{"id":93803,"date":"2026-08-13T09:33:21","date_gmt":"2026-08-13T01:33:21","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/93803.html"},"modified":"2026-08-13T09:33:21","modified_gmt":"2026-08-13T01:33:21","slug":"zookeeper-java-api-%e5%ae%9e%e7%8e%b0%e8%8a%82%e7%82%b9%e7%9a%84%e5%88%9b%e5%bb%ba%e4%b8%8e%e5%88%a0%e9%99%a4%e5%bc%80%e5%8f%91","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/93803.html","title":{"rendered":"Zookeeper - Java API \u5b9e\u73b0\u8282\u70b9\u7684\u521b\u5efa\u4e0e\u5220\u9664\u5f00\u53d1"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260813013314-6a7d1eda2a2b3.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>&#x1f44b; \u5927\u5bb6\u597d&#xff0c;\u6b22\u8fce\u6765\u5230\u6211\u7684\u6280\u672f\u535a\u5ba2&#xff01; &#x1f4da; \u5728\u8fd9\u91cc&#xff0c;\u6211\u4f1a\u5206\u4eab\u5b66\u4e60\u7b14\u8bb0\u3001\u5b9e\u6218\u7ecf\u9a8c\u4e0e\u6280\u672f\u601d\u8003&#xff0c;\u529b\u6c42\u7528\u7b80\u5355\u7684\u65b9\u5f0f\u8bb2\u6e05\u695a\u590d\u6742\u7684\u95ee\u9898\u3002 &#x1f3af; \u672c\u6587\u5c06\u56f4\u7ed5Zookeeper\u8fd9\u4e2a\u8bdd\u9898\u5c55\u5f00&#xff0c;\u5e0c\u671b\u80fd\u4e3a\u4f60\u5e26\u6765\u4e00\u4e9b\u542f\u53d1\u6216\u5b9e\u7528\u7684\u53c2\u8003\u3002 &#x1f331; \u65e0\u8bba\u4f60\u662f\u521a\u5165\u95e8\u7684\u65b0\u624b&#xff0c;\u8fd8\u662f\u6b63\u5728\u8fdb\u9636\u7684\u5f00\u53d1\u8005&#xff0c;\u5e0c\u671b\u4f60\u90fd\u80fd\u6709\u6240\u6536\u83b7&#xff01;<\/p>\n<hr \/>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>\n<ul>\n<li>\n<ul>\n<li>Zookeeper &#8211; Java API \u5b9e\u73b0\u8282\u70b9\u7684\u521b\u5efa\u4e0e\u5220\u9664\u5f00\u53d1<\/li>\n<li>ZooKeeper \u57fa\u672c\u6982\u5ff5\u4e0e Java API \u7ed3\u6784<\/li>\n<li>\u4f7f\u7528 Java API \u521b\u5efa\u8282\u70b9<\/li>\n<li>\n<ul>\n<li>\u521b\u5efa\u6301\u4e45\u8282\u70b9<\/li>\n<li>\u521b\u5efa\u4e34\u65f6\u8282\u70b9<\/li>\n<li>\u521b\u5efa\u987a\u5e8f\u8282\u70b9<\/li>\n<li>\u8282\u70b9\u8def\u5f84\u4e0e\u6570\u636e\u683c\u5f0f<\/li>\n<\/ul>\n<\/li>\n<li>\u4f7f\u7528 Java API \u5220\u9664\u8282\u70b9<\/li>\n<li>\n<ul>\n<li>\u5220\u9664\u6307\u5b9a\u8def\u5f84\u7684\u8282\u70b9<\/li>\n<li>\u5220\u9664\u4e34\u65f6\u8282\u70b9<\/li>\n<li>\u5220\u9664\u987a\u5e8f\u8282\u70b9<\/li>\n<li>\u7248\u672c\u53f7\u7684\u4f5c\u7528<\/li>\n<\/ul>\n<\/li>\n<li>\u5f02\u5e38\u5904\u7406\u4e0e\u5e38\u89c1\u95ee\u9898<\/li>\n<li>\n<ul>\n<li>KeeperException<\/li>\n<li>InterruptedException<\/li>\n<li>\u5904\u7406\u8fde\u63a5\u4e22\u5931\u4e0e\u4f1a\u8bdd\u8d85\u65f6<\/li>\n<\/ul>\n<\/li>\n<li>\u8282\u70b9\u7c7b\u578b\u4e0e ACL \u7684\u4f5c\u7528<\/li>\n<li>\n<ul>\n<li>\u8282\u70b9\u7c7b\u578b<\/li>\n<li>ACL \u7684\u4f5c\u7528<\/li>\n<li>\u5408\u7406\u9009\u62e9\u8282\u70b9\u7c7b\u578b\u4e0e ACL<\/li>\n<\/ul>\n<\/li>\n<li>\u603b\u7ed3\u4e0e\u5c55\u671b<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>Zookeeper &#8211; Java API \u5b9e\u73b0\u8282\u70b9\u7684\u521b\u5efa\u4e0e\u5220\u9664\u5f00\u53d1<\/h4>\n<p>ZooKeeper \u662f\u4e00\u4e2a\u5206\u5e03\u5f0f\u534f\u8c03\u670d\u52a1&#xff0c;\u5e7f\u6cdb\u7528\u4e8e\u7ba1\u7406\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u7684\u914d\u7f6e\u4fe1\u606f\u3001\u547d\u540d\u670d\u52a1\u3001\u5206\u5e03\u5f0f\u540c\u6b65\u548c\u7ec4\u670d\u52a1\u7b49\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u4e2a\u7c7b\u4f3c\u4e8e\u6587\u4ef6\u7cfb\u7edf\u7684\u6811\u5f62\u7ed3\u6784&#xff0c;\u6bcf\u4e2a\u8282\u70b9&#xff08;\u79f0\u4e3a znode&#xff09;\u90fd\u53ef\u4ee5\u5b58\u50a8\u6570\u636e&#xff0c;\u5e76\u652f\u6301\u591a\u79cd\u64cd\u4f5c&#xff0c;\u5982\u521b\u5efa\u3001\u8bfb\u53d6\u3001\u66f4\u65b0\u548c\u5220\u9664\u3002\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d&#xff0c;Java \u662f\u4f7f\u7528 ZooKeeper \u6700\u5e38\u89c1\u7684\u7f16\u7a0b\u8bed\u8a00\u4e4b\u4e00&#xff0c;\u56e0\u6b64\u638c\u63e1\u5176 Java API \u7684\u4f7f\u7528\u5bf9\u4e8e\u6784\u5efa\u53ef\u9760\u7684\u5206\u5e03\u5f0f\u7cfb\u7edf\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<p>\u672c\u6587\u5c06\u91cd\u70b9\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528 ZooKeeper \u7684 Java API \u5b9e\u73b0\u8282\u70b9\u7684\u521b\u5efa\u4e0e\u5220\u9664\u64cd\u4f5c\u3002ZooKeeper \u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684 API \u6765\u7ba1\u7406 znode&#xff0c;\u5305\u62ec create \u548c delete \u65b9\u6cd5\u3002\u5728\u521b\u5efa\u8282\u70b9\u65f6&#xff0c;\u5f00\u53d1\u8005\u53ef\u4ee5\u9009\u62e9\u4e0d\u540c\u7684\u8282\u70b9\u7c7b\u578b&#xff0c;\u5982\u6301\u4e45\u8282\u70b9&#xff08;PERSISTENT&#xff09;\u3001\u4e34\u65f6\u8282\u70b9&#xff08;EPHEMERAL&#xff09;\u548c\u987a\u5e8f\u8282\u70b9&#xff08;SEQUENTIAL&#xff09;&#xff0c;\u5e76\u4e14\u53ef\u4ee5\u8bbe\u7f6e\u8282\u70b9\u7684 ACL&#xff08;\u8bbf\u95ee\u63a7\u5236\u5217\u8868&#xff09;\u6765\u7ba1\u7406\u6743\u9650\u3002\u6b64\u5916&#xff0c;\u5220\u9664\u8282\u70b9\u65f6\u9700\u8981\u786e\u4fdd\u8282\u70b9\u6ca1\u6709\u5b50\u8282\u70b9&#xff0c;\u5426\u5219\u4f1a\u629b\u51fa\u5f02\u5e38\u3002<\/p>\n<p>\u63a5\u4e0b\u6765&#xff0c;\u6211\u4eec\u5c06\u6df1\u5165\u63a2\u8ba8 ZooKeeper \u7684\u57fa\u672c\u6982\u5ff5&#xff0c;\u5305\u62ec\u5176\u6570\u636e\u6a21\u578b\u3001\u4f1a\u8bdd\u673a\u5236\u548c API \u7ed3\u6784\u3002\u968f\u540e&#xff0c;\u6211\u4eec\u5c06\u901a\u8fc7\u5177\u4f53\u7684 Java \u4ee3\u7801\u793a\u4f8b\u5c55\u793a\u5982\u4f55\u4f7f\u7528 ZooKeeper \u7c7b\u7684 create \u548c delete \u65b9\u6cd5&#xff0c;\u5e76\u5206\u6790\u8fd9\u4e9b\u65b9\u6cd5\u7684\u53c2\u6570\u53ca\u4f7f\u7528\u65b9\u5f0f\u3002\u6b64\u5916&#xff0c;\u6211\u4eec\u8fd8\u5c06\u8ba8\u8bba\u8282\u70b9\u7c7b\u578b\u3001ACL \u8bbe\u7f6e\u3001\u5f02\u5e38\u5904\u7406\u7b49\u5173\u952e\u77e5\u8bc6\u70b9&#xff0c;\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u5e94\u7528 ZooKeeper \u7684 Java API\u3002<\/p>\n<h4>ZooKeeper \u57fa\u672c\u6982\u5ff5\u4e0e Java API \u7ed3\u6784<\/h4>\n<p>ZooKeeper \u7684\u6838\u5fc3\u662f\u4e00\u4e2a\u5206\u5e03\u5f0f\u534f\u8c03\u670d\u52a1&#xff0c;\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u7c7b\u4f3c\u4e8e\u6587\u4ef6\u7cfb\u7edf\u7684\u5c42\u6b21\u5316\u547d\u540d\u7a7a\u95f4&#xff0c;\u5176\u4e2d\u6bcf\u4e2a\u8282\u70b9&#xff08;znode&#xff09;\u90fd\u5b58\u50a8\u4e86\u6570\u636e&#xff0c;\u5e76\u4e14\u53ef\u4ee5\u62e5\u6709\u5b50\u8282\u70b9\u3002ZooKeeper \u7684\u6570\u636e\u6a21\u578b\u7531\u4e00\u7cfb\u5217 znode \u7ec4\u6210&#xff0c;\u8fd9\u4e9b\u8282\u70b9\u7c7b\u4f3c\u4e8e\u6587\u4ef6\u7cfb\u7edf\u4e2d\u7684\u6587\u4ef6\u548c\u76ee\u5f55&#xff0c;\u4f46\u5b83\u4eec\u901a\u5e38\u5b58\u50a8\u7684\u662f\u8f83\u5c0f\u7684\u6570\u636e\u5757&#xff0c;\u5e76\u4e14\u652f\u6301\u4e0d\u540c\u7684\u8282\u70b9\u7c7b\u578b\u3002<\/p>\n<p>\u5728 ZooKeeper \u4e2d&#xff0c;\u8282\u70b9\u5206\u4e3a\u51e0\u79cd\u7c7b\u578b&#xff1a;<\/p>\n<ul>\n<li>\u6301\u4e45\u8282\u70b9&#xff08;PERSISTENT&#xff09;&#xff1a;\u4e00\u65e6\u521b\u5efa&#xff0c;\u9664\u975e\u663e\u5f0f\u5220\u9664&#xff0c;\u5426\u5219\u4e00\u76f4\u5b58\u5728\u3002<\/li>\n<li>\u4e34\u65f6\u8282\u70b9&#xff08;EPHEMERAL&#xff09;&#xff1a;\u751f\u547d\u5468\u671f\u4e0e\u5ba2\u6237\u7aef\u4f1a\u8bdd\u7ed1\u5b9a&#xff0c;\u4f1a\u8bdd\u7ed3\u675f\u65f6\u8282\u70b9\u4f1a\u88ab\u81ea\u52a8\u5220\u9664\u3002<\/li>\n<li>\u987a\u5e8f\u8282\u70b9&#xff08;SEQUENTIAL&#xff09;&#xff1a;\u5728\u521b\u5efa\u8282\u70b9\u65f6&#xff0c;ZooKeeper \u4f1a\u81ea\u52a8\u4e3a\u8282\u70b9\u540d\u79f0\u6dfb\u52a0\u4e00\u4e2a\u5355\u8c03\u9012\u589e\u7684\u5e8f\u53f7&#xff0c;\u9002\u7528\u4e8e\u5206\u5e03\u5f0f\u9501\u7b49\u573a\u666f\u3002<\/li>\n<\/ul>\n<p>\u9664\u4e86\u8282\u70b9\u7c7b\u578b&#xff0c;ZooKeeper \u8fd8\u652f\u6301\u8bbf\u95ee\u63a7\u5236\u5217\u8868&#xff08;ACL&#xff09;&#xff0c;\u7528\u4e8e\u63a7\u5236\u54ea\u4e9b\u5ba2\u6237\u7aef\u53ef\u4ee5\u5bf9\u7279\u5b9a\u8282\u70b9\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c\u3002ACL \u7531 Id \u548c Permission \u7ec4\u6210&#xff0c;Id \u8868\u793a\u8eab\u4efd\u6807\u8bc6&#xff0c;\u800c Permission \u5b9a\u4e49\u4e86\u5141\u8bb8\u7684\u64cd\u4f5c&#xff0c;\u5982\u8bfb&#xff08;READ&#xff09;\u3001\u5199&#xff08;WRITE&#xff09;\u3001\u521b\u5efa\u5b50\u8282\u70b9&#xff08;CREATE&#xff09;\u3001\u5220\u9664\u5b50\u8282\u70b9&#xff08;DELETE&#xff09;\u548c\u7ba1\u7406&#xff08;ADMIN&#xff09;\u7b49\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b&#xff0c;\u8282\u70b9\u7684 ACL \u4e3a ZooDefs.Ids.OPEN_ACL_UNSAFE&#xff0c;\u5373\u5141\u8bb8\u6240\u6709\u64cd\u4f5c\u3002<\/p>\n<p>\u5728 Java API \u65b9\u9762&#xff0c;ZooKeeper \u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u6cd5\u6765\u64cd\u4f5c\u8282\u70b9&#xff0c;\u5176\u4e2d\u6700\u91cd\u8981\u7684\u7c7b\u662f ZooKeeper&#xff0c;\u5b83\u7528\u4e8e\u5efa\u7acb\u4e0e ZooKeeper \u670d\u52a1\u5668\u7684\u8fde\u63a5&#xff0c;\u5e76\u63d0\u4f9b\u521b\u5efa\u3001\u5220\u9664\u3001\u8bfb\u53d6\u548c\u66f4\u65b0\u8282\u70b9\u7684\u65b9\u6cd5\u3002\u4f8b\u5982&#xff0c;create \u65b9\u6cd5\u7528\u4e8e\u521b\u5efa\u8282\u70b9&#xff0c;delete \u65b9\u6cd5\u7528\u4e8e\u5220\u9664\u8282\u70b9&#xff0c;exists \u65b9\u6cd5\u7528\u4e8e\u68c0\u67e5\u8282\u70b9\u662f\u5426\u5b58\u5728&#xff0c;getData \u548c setData \u65b9\u6cd5\u5206\u522b\u7528\u4e8e\u8bfb\u53d6\u548c\u4fee\u6539\u8282\u70b9\u6570\u636e\u3002<\/p>\n<p>\u6b64\u5916&#xff0c;ZooKeeper \u7684 Java API \u652f\u6301\u540c\u6b65\u548c\u5f02\u6b65\u4e24\u79cd\u64cd\u4f5c\u65b9\u5f0f\u3002\u540c\u6b65\u65b9\u6cd5\u76f4\u63a5\u8fd4\u56de\u7ed3\u679c&#xff0c;\u800c\u5f02\u6b65\u65b9\u6cd5\u5219\u901a\u8fc7\u56de\u8c03\u51fd\u6570\u5904\u7406\u54cd\u5e94\u3002\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d&#xff0c;\u5f00\u53d1\u8005\u53ef\u4ee5\u6839\u636e\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u64cd\u4f5c\u65b9\u5f0f\u3002<\/p>\n<p>\u4e86\u89e3\u8fd9\u4e9b\u57fa\u672c\u6982\u5ff5\u540e&#xff0c;\u6211\u4eec\u53ef\u4ee5\u5728 Java \u4e2d\u4f7f\u7528 ZooKeeper API \u6765\u5b9e\u73b0\u8282\u70b9\u7684\u521b\u5efa\u548c\u5220\u9664\u64cd\u4f5c\u3002\u63a5\u4e0b\u6765&#xff0c;\u6211\u4eec\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528 ZooKeeper \u7c7b\u7684 create \u548c delete \u65b9\u6cd5&#xff0c;\u5e76\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n<h4>\u4f7f\u7528 Java API \u521b\u5efa\u8282\u70b9<\/h4>\n<p>\u5728 ZooKeeper \u4e2d&#xff0c;\u521b\u5efa\u8282\u70b9\u7684\u64cd\u4f5c\u7531 ZooKeeper \u7c7b\u7684 create \u65b9\u6cd5\u5b8c\u6210\u3002\u8be5\u65b9\u6cd5\u5141\u8bb8\u5f00\u53d1\u8005\u6307\u5b9a\u8282\u70b9\u8def\u5f84\u3001\u6570\u636e\u3001\u8bbf\u95ee\u63a7\u5236\u5217\u8868&#xff08;ACL&#xff09;\u4ee5\u53ca\u8282\u70b9\u7c7b\u578b\u3002\u57fa\u672c\u8bed\u6cd5\u5982\u4e0b&#xff1a;<\/p>\n<p><span class=\"token class-name\">String<\/span> <span class=\"token function\">create<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> path<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">byte<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> data<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span>ACL<span class=\"token punctuation\">&gt;<\/span><\/span> acl<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">CreateMode<\/span> createMode<span class=\"token punctuation\">)<\/span><\/p>\n<ul>\n<li>path&#xff1a;\u8981\u521b\u5efa\u7684\u8282\u70b9\u8def\u5f84&#xff0c;\u4f8b\u5982 \/example\/node\u3002<\/li>\n<li>data&#xff1a;\u8282\u70b9\u5b58\u50a8\u7684\u6570\u636e&#xff0c;\u7c7b\u578b\u4e3a\u5b57\u8282\u6570\u7ec4\u3002<\/li>\n<li>acl&#xff1a;\u8bbf\u95ee\u63a7\u5236\u5217\u8868&#xff0c;\u7528\u4e8e\u5b9a\u4e49\u8c01\u53ef\u4ee5\u5bf9\u8282\u70b9\u6267\u884c\u4f55\u79cd\u64cd\u4f5c\u3002<\/li>\n<li>createMode&#xff1a;\u8282\u70b9\u7c7b\u578b&#xff0c;\u53ef\u4ee5\u662f PERSISTENT\u3001EPHEMERAL \u6216 SEQUENTIAL \u7b49\u3002<\/li>\n<\/ul>\n<h5>\u521b\u5efa\u6301\u4e45\u8282\u70b9<\/h5>\n<p>\u6301\u4e45\u8282\u70b9&#xff08;PERSISTENT&#xff09;\u4e00\u65e6\u521b\u5efa&#xff0c;\u9664\u975e\u663e\u5f0f\u5220\u9664&#xff0c;\u5426\u5219\u4e00\u76f4\u5b58\u5728\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u521b\u5efa\u6301\u4e45\u8282\u70b9\u7684\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>apache<span class=\"token punctuation\">.<\/span>zookeeper<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">CreateMode<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>apache<span class=\"token punctuation\">.<\/span>zookeeper<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">ZooDefs<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>apache<span class=\"token punctuation\">.<\/span>zookeeper<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">ZooKeeper<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>apache<span class=\"token punctuation\">.<\/span>zookeeper<span class=\"token punctuation\">.<\/span>data<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">ACL<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>util<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">List<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ZKCreateExample<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> args<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">Exception<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> hostPort <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;localhost:2181&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">ZooKeeper<\/span> zk <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ZooKeeper<\/span><span class=\"token punctuation\">(<\/span>hostPort<span class=\"token punctuation\">,<\/span> <span class=\"token number\">3000<\/span><span class=\"token punctuation\">,<\/span> event <span class=\"token operator\">-&gt;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token class-name\">String<\/span> path <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\/example\/persistent_node&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">byte<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> data <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;Hello, ZooKeeper!&#034;<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getBytes<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span>ACL<span class=\"token punctuation\">&gt;<\/span><\/span> acl <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">ZooDefs<span class=\"token punctuation\">.<\/span>Ids<\/span><span class=\"token punctuation\">.<\/span><span class=\"token constant\">OPEN_ACL_UNSAFE<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5141\u8bb8\u6240\u6709\u64cd\u4f5c<\/span><\/p>\n<p>        <span class=\"token class-name\">String<\/span> createdPath <span class=\"token operator\">&#061;<\/span> zk<span class=\"token punctuation\">.<\/span><span class=\"token function\">create<\/span><span class=\"token punctuation\">(<\/span>path<span class=\"token punctuation\">,<\/span> data<span class=\"token punctuation\">,<\/span> acl<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">CreateMode<\/span><span class=\"token punctuation\">.<\/span><span class=\"token constant\">PERSISTENT<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Node created at: &#034;<\/span> <span class=\"token operator\">&#043;<\/span> createdPath<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        zk<span class=\"token punctuation\">.<\/span><span class=\"token function\">close<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d&#xff0c;\u6211\u4eec\u9996\u5148\u521b\u5efa\u4e86\u4e00\u4e2a ZooKeeper \u5b9e\u4f8b&#xff0c;\u5e76\u8fde\u63a5\u5230\u672c\u5730\u8fd0\u884c\u7684 ZooKeeper \u670d\u52a1\u5668&#xff08;\u9ed8\u8ba4\u7aef\u53e3\u4e3a 2181&#xff09;\u3002\u7136\u540e&#xff0c;\u6211\u4eec\u8c03\u7528 create \u65b9\u6cd5\u521b\u5efa\u4e86\u4e00\u4e2a\u6301\u4e45\u8282\u70b9&#xff0c;\u5e76\u5b58\u50a8\u4e86\u5b57\u7b26\u4e32 &#034;Hello, ZooKeeper!&#034;\u3002\u7531\u4e8e\u4f7f\u7528\u4e86 ZooDefs.Ids.OPEN_ACL_UNSAFE&#xff0c;\u8be5\u8282\u70b9\u5141\u8bb8\u6240\u6709\u5ba2\u6237\u7aef\u8fdb\u884c\u4efb\u4f55\u64cd\u4f5c\u3002<\/p>\n<h5>\u521b\u5efa\u4e34\u65f6\u8282\u70b9<\/h5>\n<p>\u4e34\u65f6\u8282\u70b9&#xff08;EPHEMERAL&#xff09;\u7684\u751f\u547d\u5468\u671f\u4e0e\u5ba2\u6237\u7aef\u4f1a\u8bdd\u7ed1\u5b9a&#xff0c;\u4f1a\u8bdd\u7ed3\u675f\u65f6\u8282\u70b9\u4f1a\u88ab\u81ea\u52a8\u5220\u9664\u3002\u4ee5\u4e0b\u662f\u521b\u5efa\u4e34\u65f6\u8282\u70b9\u7684\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token class-name\">String<\/span> ephemeralPath <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\/example\/ephemeral_node&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token class-name\">String<\/span> ephemeralCreatedPath <span class=\"token operator\">&#061;<\/span> zk<span class=\"token punctuation\">.<\/span><span class=\"token function\">create<\/span><span class=\"token punctuation\">(<\/span>ephemeralPath<span class=\"token punctuation\">,<\/span> data<span class=\"token punctuation\">,<\/span> acl<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">CreateMode<\/span><span class=\"token punctuation\">.<\/span><span class=\"token constant\">EPHEMERAL<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Ephemeral node created at: &#034;<\/span> <span class=\"token operator\">&#043;<\/span> ephemeralCreatedPath<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u5728\u8be5\u793a\u4f8b\u4e2d&#xff0c;\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u4e34\u65f6\u8282\u70b9&#xff0c;\u5f53\u5ba2\u6237\u7aef\u4e0e ZooKeeper \u65ad\u5f00\u8fde\u63a5\u540e&#xff0c;\u8be5\u8282\u70b9\u5c06\u81ea\u52a8\u88ab\u5220\u9664\u3002<\/p>\n<h5>\u521b\u5efa\u987a\u5e8f\u8282\u70b9<\/h5>\n<p>\u987a\u5e8f\u8282\u70b9&#xff08;SEQUENTIAL&#xff09;\u5728\u521b\u5efa\u65f6&#xff0c;ZooKeeper \u4f1a\u81ea\u52a8\u4e3a\u5176\u6dfb\u52a0\u4e00\u4e2a\u9012\u589e\u7684\u5e8f\u53f7\u3002\u8fd9\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u5e38\u7528\u4e8e\u751f\u6210\u552f\u4e00\u6807\u8bc6\u7b26\u3002\u4ee5\u4e0b\u662f\u521b\u5efa\u987a\u5e8f\u8282\u70b9\u7684\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token class-name\">String<\/span> sequentialPath <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\/example\/sequential_node&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token class-name\">String<\/span> sequentialCreatedPath <span class=\"token operator\">&#061;<\/span> zk<span class=\"token punctuation\">.<\/span><span class=\"token function\">create<\/span><span class=\"token punctuation\">(<\/span>sequentialPath<span class=\"token punctuation\">,<\/span> data<span class=\"token punctuation\">,<\/span> acl<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">CreateMode<\/span><span class=\"token punctuation\">.<\/span><span class=\"token constant\">PERSISTENT_SEQUENTIAL<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Sequential node created at: &#034;<\/span> <span class=\"token operator\">&#043;<\/span> sequentialCreatedPath<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u8fd0\u884c\u4e0a\u8ff0\u4ee3\u7801\u540e&#xff0c;ZooKeeper \u4f1a\u521b\u5efa\u7c7b\u4f3c \/example\/sequential_node0000000001 \u7684\u8282\u70b9&#xff0c;\u5e8f\u53f7\u4f1a\u6839\u636e\u5f53\u524d\u5df2\u6709\u7684\u987a\u5e8f\u8282\u70b9\u81ea\u52a8\u9012\u589e\u3002<\/p>\n<h5>\u8282\u70b9\u8def\u5f84\u4e0e\u6570\u636e\u683c\u5f0f<\/h5>\n<p>\u5728 ZooKeeper \u4e2d&#xff0c;\u8282\u70b9\u8def\u5f84\u5fc5\u987b\u662f\u7edd\u5bf9\u8def\u5f84&#xff0c;\u5e76\u4e14\u4e0d\u80fd\u5305\u542b\u7279\u6b8a\u5b57\u7b26&#xff08;\u5982\u7a7a\u683c\u6216\u63a7\u5236\u5b57\u7b26&#xff09;\u3002\u540c\u65f6&#xff0c;\u5b58\u50a8\u7684\u6570\u636e\u662f\u5b57\u8282\u6570\u7ec4&#xff0c;\u56e0\u6b64\u9700\u8981\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5b57\u8282\u6570\u7ec4&#xff0c;\u5982\u4f7f\u7528 getBytes() \u65b9\u6cd5\u3002\u6b64\u5916&#xff0c;ZooKeeper \u5bf9\u8282\u70b9\u6570\u636e\u7684\u5927\u5c0f\u6709\u9650\u5236&#xff0c;\u9ed8\u8ba4\u60c5\u51b5\u4e0b&#xff0c;\u5355\u4e2a\u8282\u70b9\u6700\u591a\u5b58\u50a8 1MB \u6570\u636e\u3002<\/p>\n<p>\u901a\u8fc7\u4e0a\u8ff0\u793a\u4f8b&#xff0c;\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u5982\u4f55\u4f7f\u7528 Java API \u521b\u5efa\u4e0d\u540c\u7c7b\u578b\u7684\u8282\u70b9&#xff0c;\u5e76\u8bbe\u7f6e\u76f8\u5e94\u7684 ACL \u548c\u8282\u70b9\u7c7b\u578b\u3002\u63a5\u4e0b\u6765&#xff0c;\u6211\u4eec\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528 Java API \u5220\u9664\u8282\u70b9\u3002<\/p>\n<h4>\u4f7f\u7528 Java API \u5220\u9664\u8282\u70b9<\/h4>\n<p>\u5728 ZooKeeper \u4e2d&#xff0c;\u5220\u9664\u8282\u70b9\u7684\u64cd\u4f5c\u7531 ZooKeeper \u7c7b\u7684 delete \u65b9\u6cd5\u5b8c\u6210\u3002\u8be5\u65b9\u6cd5\u5141\u8bb8\u5f00\u53d1\u8005\u6307\u5b9a\u8981\u5220\u9664\u7684\u8282\u70b9\u8def\u5f84\u4ee5\u53ca\u7248\u672c\u53f7&#xff0c;\u4ee5\u786e\u4fdd\u5220\u9664\u64cd\u4f5c\u7684\u6b63\u786e\u6027\u3002\u57fa\u672c\u8bed\u6cd5\u5982\u4e0b&#xff1a;<\/p>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token function\">delete<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> path<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> version<span class=\"token punctuation\">)<\/span><\/p>\n<ul>\n<li>path&#xff1a;\u8981\u5220\u9664\u7684\u8282\u70b9\u8def\u5f84&#xff0c;\u4f8b\u5982 \/example\/node\u3002<\/li>\n<li>version&#xff1a;\u8282\u70b9\u7684\u7248\u672c\u53f7&#xff0c;\u7528\u4e8e\u4e50\u89c2\u9501\u673a\u5236\u3002\u5982\u679c\u63d0\u4f9b\u7684\u7248\u672c\u53f7\u4e0e\u5f53\u524d\u8282\u70b9\u7684\u7248\u672c\u53f7\u4e0d\u5339\u914d&#xff0c;\u5219\u5220\u9664\u64cd\u4f5c\u4f1a\u5931\u8d25\u3002<\/li>\n<\/ul>\n<h5>\u5220\u9664\u6307\u5b9a\u8def\u5f84\u7684\u8282\u70b9<\/h5>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u5220\u9664\u6307\u5b9a\u8def\u5f84\u8282\u70b9\u7684\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>apache<span class=\"token punctuation\">.<\/span>zookeeper<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">ZooKeeper<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ZKDeleteExample<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> args<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">Exception<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> hostPort <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;localhost:2181&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">ZooKeeper<\/span> zk <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ZooKeeper<\/span><span class=\"token punctuation\">(<\/span>hostPort<span class=\"token punctuation\">,<\/span> <span class=\"token number\">3000<\/span><span class=\"token punctuation\">,<\/span> event <span class=\"token operator\">-&gt;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token class-name\">String<\/span> path <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\/example\/persistent_node&#034;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u5220\u9664\u8282\u70b9&#xff0c;version \u4e3a -1 \u8868\u793a\u5ffd\u7565\u7248\u672c\u53f7<\/span><br \/>\n        zk<span class=\"token punctuation\">.<\/span><span class=\"token function\">delete<\/span><span class=\"token punctuation\">(<\/span>path<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Node deleted: &#034;<\/span> <span class=\"token operator\">&#043;<\/span> path<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        zk<span class=\"token punctuation\">.<\/span><span class=\"token function\">close<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d&#xff0c;\u6211\u4eec\u9996\u5148\u521b\u5efa\u4e86\u4e00\u4e2a ZooKeeper \u5b9e\u4f8b&#xff0c;\u5e76\u8fde\u63a5\u5230\u672c\u5730\u8fd0\u884c\u7684 ZooKeeper \u670d\u52a1\u5668\u3002\u7136\u540e&#xff0c;\u6211\u4eec\u8c03\u7528 delete \u65b9\u6cd5\u5220\u9664\u6307\u5b9a\u8def\u5f84\u7684\u8282\u70b9\u3002\u7531\u4e8e\u6211\u4eec\u4f20\u5165\u7684\u7248\u672c\u53f7\u4e3a -1&#xff0c;ZooKeeper \u4f1a\u5ffd\u7565\u7248\u672c\u68c0\u67e5&#xff0c;\u76f4\u63a5\u5220\u9664\u8282\u70b9\u3002<\/p>\n<h5>\u5220\u9664\u4e34\u65f6\u8282\u70b9<\/h5>\n<p>\u7531\u4e8e\u4e34\u65f6\u8282\u70b9\u7684\u751f\u547d\u5468\u671f\u4e0e\u5ba2\u6237\u7aef\u4f1a\u8bdd\u7ed1\u5b9a&#xff0c;\u56e0\u6b64\u5982\u679c\u5ba2\u6237\u7aef\u4e0e ZooKeeper \u65ad\u5f00\u8fde\u63a5&#xff0c;\u4e34\u65f6\u8282\u70b9\u4f1a\u88ab\u81ea\u52a8\u5220\u9664\u3002\u4f46\u5982\u679c\u6211\u4eec\u5e0c\u671b\u4e3b\u52a8\u5220\u9664\u4e34\u65f6\u8282\u70b9&#xff0c;\u4e5f\u53ef\u4ee5\u4f7f\u7528 delete \u65b9\u6cd5&#xff1a;<\/p>\n<p><span class=\"token class-name\">String<\/span> ephemeralPath <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\/example\/ephemeral_node&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\nzk<span class=\"token punctuation\">.<\/span><span class=\"token function\">delete<\/span><span class=\"token punctuation\">(<\/span>ephemeralPath<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Ephemeral node deleted: &#034;<\/span> <span class=\"token operator\">&#043;<\/span> ephemeralPath<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h5>\u5220\u9664\u987a\u5e8f\u8282\u70b9<\/h5>\n<p>\u987a\u5e8f\u8282\u70b9\u7684\u8def\u5f84\u901a\u5e38\u5305\u542b\u4e00\u4e2a\u81ea\u52a8\u751f\u6210\u7684\u5e8f\u53f7&#xff0c;\u4f8b\u5982 \/example\/sequential_node0000000001\u3002\u8981\u5220\u9664\u987a\u5e8f\u8282\u70b9&#xff0c;\u6211\u4eec\u9700\u8981\u77e5\u9053\u5b8c\u6574\u7684\u8def\u5f84&#xff1a;<\/p>\n<p><span class=\"token class-name\">String<\/span> sequentialPath <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\/example\/sequential_node0000000001&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\nzk<span class=\"token punctuation\">.<\/span><span class=\"token function\">delete<\/span><span class=\"token punctuation\">(<\/span>sequentialPath<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Sequential node deleted: &#034;<\/span> <span class=\"token operator\">&#043;<\/span> sequentialPath<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h5>\u7248\u672c\u53f7\u7684\u4f5c\u7528<\/h5>\n<p>ZooKeeper \u4f7f\u7528\u7248\u672c\u53f7&#xff08;version&#xff09;\u6765\u5b9e\u73b0\u4e50\u89c2\u9501\u673a\u5236\u3002\u6bcf\u6b21\u4fee\u6539\u8282\u70b9\u6570\u636e\u6216\u5220\u9664\u8282\u70b9\u65f6&#xff0c;ZooKeeper \u90fd\u4f1a\u589e\u52a0\u8be5\u8282\u70b9\u7684\u7248\u672c\u53f7\u3002\u5982\u679c\u5728\u5220\u9664\u8282\u70b9\u65f6\u6307\u5b9a\u7684\u7248\u672c\u53f7\u4e0e\u5f53\u524d\u7248\u672c\u53f7\u4e0d\u5339\u914d&#xff0c;ZooKeeper \u4f1a\u629b\u51fa BadVersionException&#xff0c;\u4ee5\u9632\u6b62\u591a\u4e2a\u5ba2\u6237\u7aef\u540c\u65f6\u4fee\u6539\u540c\u4e00\u4e2a\u8282\u70b9\u5bfc\u81f4\u6570\u636e\u4e0d\u4e00\u81f4\u3002<\/p>\n<p>\u4f8b\u5982&#xff0c;\u5982\u679c\u6211\u4eec\u5e0c\u671b\u786e\u4fdd\u5220\u9664\u64cd\u4f5c\u4ec5\u5728\u8282\u70b9\u7248\u672c\u4e3a 0 \u65f6\u6267\u884c&#xff0c;\u53ef\u4ee5\u8fd9\u6837\u505a&#xff1a;<\/p>\n<p><span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    zk<span class=\"token punctuation\">.<\/span><span class=\"token function\">delete<\/span><span class=\"token punctuation\">(<\/span>path<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u4ec5\u5f53\u8282\u70b9\u7248\u672c\u4e3a 0 \u65f6\u5220\u9664<\/span><br \/>\n    <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Node deleted with version 0&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Exception<\/span> e<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Failed to delete node: &#034;<\/span> <span class=\"token operator\">&#043;<\/span> e<span class=\"token punctuation\">.<\/span><span class=\"token function\">getMessage<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u5982\u679c\u8282\u70b9\u7684\u7248\u672c\u53f7\u4e0d\u662f 0&#xff0c;\u5220\u9664\u64cd\u4f5c\u5c06\u5931\u8d25&#xff0c;\u5e76\u629b\u51fa\u5f02\u5e38\u3002\u8fd9\u79cd\u65b9\u5f0f\u53ef\u4ee5\u7528\u4e8e\u786e\u4fdd\u5220\u9664\u64cd\u4f5c\u7684\u539f\u5b50\u6027\u3002<\/p>\n<p>\u901a\u8fc7\u4e0a\u8ff0\u793a\u4f8b&#xff0c;\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u5982\u4f55\u4f7f\u7528 Java API \u5220\u9664\u4e0d\u540c\u7c7b\u578b\u7684\u8282\u70b9&#xff0c;\u5e76\u5229\u7528\u7248\u672c\u53f7\u6765\u786e\u4fdd\u64cd\u4f5c\u7684\u6b63\u786e\u6027\u3002\u63a5\u4e0b\u6765&#xff0c;\u6211\u4eec\u5c06\u8ba8\u8bba\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\u5982\u4f55\u5904\u7406\u53ef\u80fd\u51fa\u73b0\u7684\u5f02\u5e38\u60c5\u51b5\u3002<\/p>\n<h4>\u5f02\u5e38\u5904\u7406\u4e0e\u5e38\u89c1\u95ee\u9898<\/h4>\n<p>\u5728\u4f7f\u7528 ZooKeeper \u7684 Java API \u8fdb\u884c\u8282\u70b9\u521b\u5efa\u548c\u5220\u9664\u64cd\u4f5c\u65f6&#xff0c;\u53ef\u80fd\u4f1a\u9047\u5230\u5404\u79cd\u5f02\u5e38\u60c5\u51b5\u3002ZooKeeper \u7684 API \u8bbe\u8ba1\u8981\u6c42\u5f00\u53d1\u8005\u663e\u5f0f\u5904\u7406\u8fd9\u4e9b\u5f02\u5e38&#xff0c;\u4ee5\u786e\u4fdd\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u548c\u53ef\u9760\u6027\u3002\u5e38\u89c1\u7684\u5f02\u5e38\u5305\u62ec KeeperException \u548c InterruptedException&#xff0c;\u6b64\u5916&#xff0c;\u8fd8\u53ef\u80fd\u51fa\u73b0\u7f51\u7edc\u8fde\u63a5\u95ee\u9898\u3001\u4f1a\u8bdd\u8d85\u65f6\u7b49\u8fd0\u884c\u65f6\u5f02\u5e38\u3002<\/p>\n<h5>KeeperException<\/h5>\n<p>KeeperException \u662f ZooKeeper API \u4e2d\u6700\u5e38\u89c1\u7684\u5f02\u5e38\u7c7b\u578b&#xff0c;\u5b83\u8868\u793a ZooKeeper \u670d\u52a1\u5668\u8fd4\u56de\u7684\u9519\u8bef\u72b6\u6001\u3002\u5e38\u89c1\u7684\u5b50\u7c7b\u5305\u62ec&#xff1a;<\/p>\n<ul>\n<li>NoNodeException&#xff1a;\u5c1d\u8bd5\u5220\u9664\u6216\u4fee\u6539\u4e00\u4e2a\u4e0d\u5b58\u5728\u7684\u8282\u70b9\u65f6\u629b\u51fa\u3002<\/li>\n<li>NodeExistsException&#xff1a;\u5c1d\u8bd5\u521b\u5efa\u4e00\u4e2a\u5df2\u5b58\u5728\u7684\u8282\u70b9\u65f6\u629b\u51fa\u3002<\/li>\n<li>BadVersionException&#xff1a;\u7248\u672c\u53f7\u4e0d\u5339\u914d\u65f6\u629b\u51fa&#xff0c;\u901a\u5e38\u5728\u5220\u9664\u6216\u4fee\u6539\u8282\u70b9\u65f6\u53d1\u751f\u3002<\/li>\n<li>ConnectionLossException&#xff1a;\u4e0e ZooKeeper \u670d\u52a1\u5668\u7684\u8fde\u63a5\u4e22\u5931\u65f6\u629b\u51fa&#xff0c;\u53ef\u80fd\u9700\u8981\u91cd\u8bd5\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982&#xff0c;\u5728\u521b\u5efa\u8282\u70b9\u65f6&#xff0c;\u5982\u679c\u8282\u70b9\u5df2\u7ecf\u5b58\u5728&#xff0c;\u4f1a\u629b\u51fa NodeExistsException&#xff1a;<\/p>\n<p><span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    zk<span class=\"token punctuation\">.<\/span><span class=\"token function\">create<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\/example\/node&#034;<\/span><span class=\"token punctuation\">,<\/span> data<span class=\"token punctuation\">,<\/span> acl<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">CreateMode<\/span><span class=\"token punctuation\">.<\/span><span class=\"token constant\">PERSISTENT<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">KeeperException<span class=\"token punctuation\">.<\/span>NodeExistsException<\/span> e<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Node already exists!&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">KeeperException<\/span> <span class=\"token operator\">|<\/span> <span class=\"token class-name\">InterruptedException<\/span> e<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    e<span class=\"token punctuation\">.<\/span><span class=\"token function\">printStackTrace<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h5>InterruptedException<\/h5>\n<p>InterruptedException \u8868\u793a\u5f53\u524d\u7ebf\u7a0b\u5728\u7b49\u5f85 ZooKeeper \u64cd\u4f5c\u5b8c\u6210\u65f6\u88ab\u4e2d\u65ad\u3002\u4f8b\u5982&#xff0c;\u5f53\u8c03\u7528 ZooKeeper \u6784\u9020\u51fd\u6570\u8fde\u63a5\u670d\u52a1\u5668\u65f6&#xff0c;\u5982\u679c\u7ebf\u7a0b\u88ab\u4e2d\u65ad&#xff0c;\u5c31\u4f1a\u629b\u51fa\u6b64\u5f02\u5e38\u3002\u4e3a\u4e86\u907f\u514d\u7a0b\u5e8f\u56e0\u4e2d\u65ad\u800c\u610f\u5916\u7ec8\u6b62&#xff0c;\u5e94\u8be5\u6b63\u786e\u5904\u7406\u8be5\u5f02\u5e38&#xff1a;<\/p>\n<p><span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token class-name\">ZooKeeper<\/span> zk <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ZooKeeper<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;localhost:2181&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">3000<\/span><span class=\"token punctuation\">,<\/span> event <span class=\"token operator\">-&gt;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">InterruptedException<\/span> e<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Connection interrupted!&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token class-name\">Thread<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">currentThread<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">interrupt<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u91cd\u65b0\u8bbe\u7f6e\u4e2d\u65ad\u72b6\u6001<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h5>\u5904\u7406\u8fde\u63a5\u4e22\u5931\u4e0e\u4f1a\u8bdd\u8d85\u65f6<\/h5>\n<p>ZooKeeper \u7684\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u8fde\u63a5\u53ef\u80fd\u4f1a\u56e0\u4e3a\u7f51\u7edc\u95ee\u9898\u800c\u4e2d\u65ad&#xff0c;\u5bfc\u81f4 ConnectionLossException\u3002\u6b64\u5916&#xff0c;\u5982\u679c\u5ba2\u6237\u7aef\u5728\u4f1a\u8bdd\u8d85\u65f6\u65f6\u95f4\u5185\u672a\u80fd\u4e0e\u670d\u52a1\u5668\u901a\u4fe1&#xff0c;\u4f1a\u8bdd\u5c06\u5931\u6548&#xff0c;\u6b64\u65f6\u6240\u6709\u4e34\u65f6\u8282\u70b9\u4f1a\u88ab\u81ea\u52a8\u5220\u9664\u3002\u4e3a\u4e86\u907f\u514d\u8fd9\u4e9b\u95ee\u9898&#xff0c;\u53ef\u4ee5\u91c7\u53d6\u4ee5\u4e0b\u63aa\u65bd&#xff1a;<\/p>\n<li>\u91cd\u8bd5\u673a\u5236&#xff1a;\u5728\u7f51\u7edc\u8fde\u63a5\u5931\u8d25\u65f6&#xff0c;\u53ef\u4ee5\u5c1d\u8bd5\u91cd\u65b0\u8fde\u63a5\u5e76\u91cd\u65b0\u6267\u884c\u64cd\u4f5c\u3002<\/li>\n<li>\u76d1\u542c\u4f1a\u8bdd\u72b6\u6001&#xff1a;\u901a\u8fc7 Watcher \u76d1\u542c\u4f1a\u8bdd\u72b6\u6001\u7684\u53d8\u5316&#xff0c;\u4ee5\u4fbf\u5728\u4f1a\u8bdd\u5931\u6548\u65f6\u91c7\u53d6\u9002\u5f53\u63aa\u65bd\u3002<\/li>\n<li>\u5408\u7406\u8bbe\u7f6e\u4f1a\u8bdd\u8d85\u65f6\u65f6\u95f4&#xff1a;\u786e\u4fdd\u4f1a\u8bdd\u8d85\u65f6\u65f6\u95f4\u8db3\u591f\u957f&#xff0c;\u4ee5\u907f\u514d\u56e0\u77ed\u6682\u7684\u7f51\u7edc\u6ce2\u52a8\u5bfc\u81f4\u4f1a\u8bdd\u5931\u6548\u3002<\/li>\n<p>\u4f8b\u5982&#xff0c;\u53ef\u4ee5\u4f7f\u7528 CountDownLatch \u6765\u7b49\u5f85\u8fde\u63a5\u5efa\u7acb&#xff0c;\u5e76\u5728\u8fde\u63a5\u4e22\u5931\u65f6\u5c1d\u8bd5\u91cd\u65b0\u8fde\u63a5&#xff1a;<\/p>\n<p><span class=\"token class-name\">CountDownLatch<\/span> connectedSignal <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">CountDownLatch<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token class-name\">ZooKeeper<\/span> zk <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ZooKeeper<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;localhost:2181&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">3000<\/span><span class=\"token punctuation\">,<\/span> event <span class=\"token operator\">-&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>event<span class=\"token punctuation\">.<\/span><span class=\"token function\">getState<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token class-name\">Watcher<span class=\"token punctuation\">.<\/span>Event<span class=\"token punctuation\">.<\/span>KeeperState<span class=\"token punctuation\">.<\/span>SyncConnected<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        connectedSignal<span class=\"token punctuation\">.<\/span><span class=\"token function\">countDown<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nconnectedSignal<span class=\"token punctuation\">.<\/span><span class=\"token function\">await<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u7b49\u5f85\u8fde\u63a5\u5efa\u7acb<\/span><\/p>\n<p>\u901a\u8fc7\u5408\u7406\u5904\u7406\u5f02\u5e38\u548c\u8fde\u63a5\u95ee\u9898&#xff0c;\u53ef\u4ee5\u63d0\u9ad8 ZooKeeper \u5e94\u7528\u7a0b\u5e8f\u7684\u5065\u58ee\u6027&#xff0c;\u786e\u4fdd\u5728\u5206\u5e03\u5f0f\u73af\u5883\u4e2d\u7a33\u5b9a\u8fd0\u884c\u3002<\/p>\n<h4>\u8282\u70b9\u7c7b\u578b\u4e0e ACL \u7684\u4f5c\u7528<\/h4>\n<p>\u5728 ZooKeeper \u4e2d&#xff0c;\u8282\u70b9&#xff08;znode&#xff09;\u4e0d\u4ec5\u53ef\u4ee5\u5b58\u50a8\u6570\u636e&#xff0c;\u8fd8\u53ef\u4ee5\u6839\u636e\u4e0d\u540c\u7684\u4f7f\u7528\u573a\u666f\u8bbe\u7f6e\u4e0d\u540c\u7684\u8282\u70b9\u7c7b\u578b\u548c\u8bbf\u95ee\u63a7\u5236\u5217\u8868&#xff08;ACL&#xff09;\u3002\u8fd9\u4e9b\u8bbe\u7f6e\u51b3\u5b9a\u4e86\u8282\u70b9\u7684\u751f\u547d\u5468\u671f\u3001\u53ef\u89c1\u6027\u4ee5\u53ca\u5b89\u5168\u6027&#xff0c;\u5bf9\u4e8e\u6784\u5efa\u53ef\u9760\u7684\u5206\u5e03\u5f0f\u7cfb\u7edf\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<h5>\u8282\u70b9\u7c7b\u578b<\/h5>\n<p>ZooKeeper \u652f\u6301\u591a\u79cd\u8282\u70b9\u7c7b\u578b&#xff0c;\u6bcf\u79cd\u7c7b\u578b\u9002\u7528\u4e8e\u4e0d\u540c\u7684\u5e94\u7528\u573a\u666f&#xff1a;<\/p>\n<ul>\n<li>\u6301\u4e45\u8282\u70b9&#xff08;PERSISTENT&#xff09;&#xff1a;\u4e00\u65e6\u521b\u5efa&#xff0c;\u9664\u975e\u663e\u5f0f\u5220\u9664&#xff0c;\u5426\u5219\u4e00\u76f4\u5b58\u5728\u3002\u8fd9\u79cd\u7c7b\u578b\u7684\u8282\u70b9\u9002\u7528\u4e8e\u5b58\u50a8\u9700\u8981\u957f\u671f\u4fdd\u7559\u7684\u914d\u7f6e\u4fe1\u606f\u6216\u5143\u6570\u636e\u3002<\/li>\n<li>\u4e34\u65f6\u8282\u70b9&#xff08;EPHEMERAL&#xff09;&#xff1a;\u751f\u547d\u5468\u671f\u4e0e\u5ba2\u6237\u7aef\u4f1a\u8bdd\u7ed1\u5b9a&#xff0c;\u4f1a\u8bdd\u7ed3\u675f\u65f6\u8282\u70b9\u4f1a\u88ab\u81ea\u52a8\u5220\u9664\u3002\u4e34\u65f6\u8282\u70b9\u5e38\u7528\u4e8e\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u7684\u6210\u5458\u7ba1\u7406&#xff0c;\u4f8b\u5982\u6ce8\u518c\u670d\u52a1\u5b9e\u4f8b&#xff0c;\u5f53\u5b9e\u4f8b\u4e0b\u7ebf\u65f6&#xff0c;\u5bf9\u5e94\u7684\u4e34\u65f6\u8282\u70b9\u4f1a\u81ea\u52a8\u6d88\u5931\u3002<\/li>\n<li>\u987a\u5e8f\u8282\u70b9&#xff08;SEQUENTIAL&#xff09;&#xff1a;\u5728\u521b\u5efa\u8282\u70b9\u65f6&#xff0c;ZooKeeper \u4f1a\u81ea\u52a8\u4e3a\u8282\u70b9\u540d\u79f0\u6dfb\u52a0\u4e00\u4e2a\u5355\u8c03\u9012\u589e\u7684\u5e8f\u53f7\u3002\u8fd9\u79cd\u7c7b\u578b\u7684\u8282\u70b9\u901a\u5e38\u7528\u4e8e\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u6216\u961f\u5217&#xff0c;\u786e\u4fdd\u591a\u4e2a\u5ba2\u6237\u7aef\u80fd\u591f\u6709\u5e8f\u5730\u8bbf\u95ee\u5171\u4eab\u8d44\u6e90\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982&#xff0c;\u4e00\u4e2a\u5206\u5e03\u5f0f\u4efb\u52a1\u8c03\u5ea6\u7cfb\u7edf\u53ef\u80fd\u4f1a\u4f7f\u7528\u987a\u5e8f\u8282\u70b9\u6765\u4fdd\u8bc1\u4efb\u52a1\u7684\u516c\u5e73\u6267\u884c\u987a\u5e8f&#xff0c;\u800c\u670d\u52a1\u6ce8\u518c\u4e0e\u53d1\u73b0\u673a\u5236\u5219\u53ef\u80fd\u4f9d\u8d56\u4e34\u65f6\u8282\u70b9\u6765\u81ea\u52a8\u6e05\u7406\u5931\u6548\u7684\u670d\u52a1\u5b9e\u4f8b\u3002<\/p>\n<h5>ACL \u7684\u4f5c\u7528<\/h5>\n<p>\u8bbf\u95ee\u63a7\u5236\u5217\u8868&#xff08;ACL&#xff09;\u51b3\u5b9a\u4e86\u54ea\u4e9b\u5ba2\u6237\u7aef\u53ef\u4ee5\u5bf9\u7279\u5b9a\u8282\u70b9\u6267\u884c\u4f55\u79cd\u64cd\u4f5c\u3002ZooKeeper \u63d0\u4f9b\u4e86\u7075\u6d3b\u7684\u6743\u9650\u7ba1\u7406\u673a\u5236&#xff0c;\u4f7f\u5f97\u5f00\u53d1\u8005\u53ef\u4ee5\u6839\u636e\u9700\u6c42\u8bbe\u7f6e\u4e0d\u540c\u7684\u8bbf\u95ee\u7b56\u7565\u3002<\/p>\n<p>\u5e38\u89c1\u7684 ACL \u6a21\u5f0f\u5305\u62ec&#xff1a;<\/p>\n<ul>\n<li>OPEN_ACL_UNSAFE&#xff1a;\u5141\u8bb8\u6240\u6709\u64cd\u4f5c&#xff0c;\u9002\u7528\u4e8e\u6d4b\u8bd5\u73af\u5883\u6216\u4e0d\u9700\u8981\u4e25\u683c\u6743\u9650\u63a7\u5236\u7684\u573a\u666f\u3002<\/li>\n<li>CREATOR_ALL_ACL&#xff1a;\u53ea\u6709\u521b\u5efa\u8be5\u8282\u70b9\u7684\u5ba2\u6237\u7aef\u53ef\u4ee5\u8fdb\u884c\u6240\u6709\u64cd\u4f5c&#xff0c;\u5176\u4ed6\u5ba2\u6237\u7aef\u65e0\u6cd5\u8bbf\u95ee\u3002<\/li>\n<li>READ_ACL_UNSAFE&#xff1a;\u6240\u6709\u5ba2\u6237\u7aef\u90fd\u53ef\u4ee5\u8bfb\u53d6\u8be5\u8282\u70b9&#xff0c;\u4f46\u65e0\u6cd5\u8fdb\u884c\u5199\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<p>\u6b64\u5916&#xff0c;\u5f00\u53d1\u8005\u8fd8\u53ef\u4ee5\u81ea\u5b9a\u4e49 ACL&#xff0c;\u4ee5\u5b9e\u73b0\u66f4\u7cbe\u7ec6\u7684\u6743\u9650\u63a7\u5236\u3002\u4f8b\u5982&#xff0c;\u5728\u4e00\u4e2a\u91d1\u878d\u7cfb\u7edf\u4e2d&#xff0c;\u67d0\u4e9b\u5173\u952e\u914d\u7f6e\u8282\u70b9\u53ef\u80fd\u4ec5\u5141\u8bb8\u7279\u5b9a\u7684\u7ba1\u7406\u5ba2\u6237\u7aef\u8fdb\u884c\u4fee\u6539&#xff0c;\u800c\u5176\u4ed6\u5ba2\u6237\u7aef\u53ea\u80fd\u8bfb\u53d6\u3002<\/p>\n<h5>\u5408\u7406\u9009\u62e9\u8282\u70b9\u7c7b\u578b\u4e0e ACL<\/h5>\n<p>\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d&#xff0c;\u5408\u7406\u9009\u62e9\u8282\u70b9\u7c7b\u578b\u548c ACL \u53ef\u4ee5\u63d0\u9ad8\u7cfb\u7edf\u7684\u5b89\u5168\u6027\u548c\u7a33\u5b9a\u6027\u3002\u4f8b\u5982&#xff1a;<\/p>\n<ul>\n<li>\u5982\u679c\u9700\u8981\u786e\u4fdd\u67d0\u4e2a\u8282\u70b9\u5728\u5ba2\u6237\u7aef\u65ad\u5f00\u8fde\u63a5\u540e\u81ea\u52a8\u5220\u9664&#xff0c;\u5e94\u4f7f\u7528\u4e34\u65f6\u8282\u70b9&#xff0c;\u5e76\u7ed3\u5408\u9002\u5f53\u7684 ACL&#xff0c;\u9632\u6b62\u5176\u4ed6\u5ba2\u6237\u7aef\u4fee\u6539\u6216\u5220\u9664\u8be5\u8282\u70b9\u3002<\/li>\n<li>\u5982\u679c\u9700\u8981\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501&#xff0c;\u53ef\u4ee5\u4f7f\u7528\u987a\u5e8f\u8282\u70b9&#xff0c;\u5e76\u7ed3\u5408\u4e34\u65f6\u8282\u70b9&#xff0c;\u786e\u4fdd\u9501\u7684\u516c\u5e73\u6027\u548c\u81ea\u52a8\u91ca\u653e\u3002<\/li>\n<li>\u5728\u5b58\u50a8\u654f\u611f\u6570\u636e\u65f6&#xff0c;\u5e94\u4f7f\u7528\u4e25\u683c\u7684 ACL \u7b56\u7565&#xff0c;\u9650\u5236\u53ea\u6709\u7279\u5b9a\u5ba2\u6237\u7aef\u53ef\u4ee5\u8bbf\u95ee&#xff0c;\u4ee5\u9632\u6b62\u6570\u636e\u6cc4\u9732\u6216\u7be1\u6539\u3002<\/li>\n<\/ul>\n<p>\u901a\u8fc7\u5408\u7406\u914d\u7f6e\u8282\u70b9\u7c7b\u578b\u548c ACL&#xff0c;\u53ef\u4ee5\u6709\u6548\u63d0\u5347 ZooKeeper \u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u7684\u5b89\u5168\u6027\u548c\u53ef\u9760\u6027&#xff0c;\u786e\u4fdd\u6570\u636e\u7684\u6b63\u786e\u8bbf\u95ee\u548c\u7ba1\u7406\u3002<\/p>\n<h4>\u603b\u7ed3\u4e0e\u5c55\u671b<\/h4>\n<p>\u901a\u8fc7\u672c\u6587\u7684\u4ecb\u7ecd&#xff0c;\u6211\u4eec\u6df1\u5165\u63a2\u8ba8\u4e86\u5982\u4f55\u4f7f\u7528 ZooKeeper \u7684 Java API \u5b9e\u73b0\u8282\u70b9\u7684\u521b\u5efa\u4e0e\u5220\u9664\u64cd\u4f5c\u3002ZooKeeper \u4f5c\u4e3a\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u7684\u6838\u5fc3\u534f\u8c03\u670d\u52a1&#xff0c;\u5176\u8282\u70b9\u7ba1\u7406\u80fd\u529b\u5728\u6784\u5efa\u9ad8\u53ef\u7528\u3001\u53ef\u6269\u5c55\u7684\u7cfb\u7edf\u4e2d\u8d77\u5230\u4e86\u5173\u952e\u4f5c\u7528\u3002\u6211\u4eec\u8be6\u7ec6\u5206\u6790\u4e86 ZooKeeper \u7c7b\u7684 create \u548c delete 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