{"id":43338,"date":"2025-06-12T07:11:38","date_gmt":"2025-06-11T23:11:38","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/43338.html"},"modified":"2025-06-12T07:11:38","modified_gmt":"2025-06-11T23:11:38","slug":"%e3%80%90java%e3%80%91%e3%80%90%e6%9c%8d%e5%8a%a1%e5%99%a8%e3%80%91%e7%ba%bf%e7%a8%8b%e4%b8%8a%e4%b8%8b%e6%96%87%e4%b8%a2%e5%a4%b1-%e6%98%af%e6%8c%87%e4%bb%80%e4%b9%88%ef%bc%8c%e3%80%90websphere","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/43338.html","title":{"rendered":"\u3010java\u3011\u3010\u670d\u52a1\u5668\u3011\u7ebf\u7a0b\u4e0a\u4e0b\u6587\u4e22\u5931 \u662f\u6307\u4ec0\u4e48\uff0c\u3010WebSphere\u4e2d\u5982\u4f55\u89e3\u51b3\u3011"},"content":{"rendered":"\u76ee\u5f55<\/p>\n
\u25a0\u524d\u8a00<\/p>\n
\u25a0\u6b63\u6587\u5f00\u59cb<\/p>\n
\u7ebf\u7a0b\u4e0a\u4e0b\u6587\u7684\u6838\u5fc3\u7ec4\u6210\u90e8\u5206<\/p>\n
\u4e3a\u4ec0\u4e48\u4f1a\u51fa\u73b0\u4e0a\u4e0b\u6587\u4e22\u5931？<\/p>\n
\u76f4\u89c2\u793a\u4f8b\u8bf4\u660e<\/p>\n
\u4e3a\u4ec0\u4e48\u4e0a\u4e0b\u6587\u5982\u6b64\u91cd\u8981？<\/p>\n
\u89e3\u51b3\u4e0a\u4e0b\u6587\u4e22\u5931\u7684\u5173\u952e<\/p>\n
\u603b\u7ed3<\/p>\n
\u25a0\u5982\u679c\u6211\u60f3\u5728servlet\u4e2d\u4f7f\u7528\u7ebf\u7a0b，\u4ee3\u7801\u5e94\u8be5\u5982\u4f55\u5b9e\u73b0<\/p>\n
\u63a8\u8350\u65b9\u6848：\u4f7f\u7528 ManagedExecutorService（WebSphere \u6258\u7ba1\u7ebf\u7a0b\u6c60）<\/p>\n
\u5907\u9009\u65b9\u6848：\u624b\u52a8\u7ba1\u7406\u7ebf\u7a0b\u4e0a\u4e0b\u6587（\u5982\u679c\u65e0\u6cd5\u4f7f\u7528 ManagedExecutorService）<\/p>\n
\u5173\u952e\u914d\u7f6e\u6b65\u9aa4（WebSphere \u63a7\u5236\u53f0）<\/p>\n
\u4e24\u79cd\u65b9\u6848\u5bf9\u6bd4<\/p>\n
\u6700\u4f73\u5b9e\u8df5\u5efa\u8bae<\/p>\n
\u5b8c\u6574\u793a\u4f8b（\u751f\u4ea7\u7ea7\u4ee3\u7801）<\/p>\n
\u25a0ManagedExecutorService \u8fd9\u4e2a\u7c7b，\u5728\u90a3\u4e2ajar\u4e2d<\/p>\n
\u89c4\u8303\u5b9a\u4e49\u5305（\u901a\u7528）<\/p>\n
\u603b\u7ed3<\/p>\n
\u6ce8\u610f：\u4e0d\u9002\u7528WebSphere 8.5.5，\u6ca1\u6709\u3010com.ibm.ws.concurrent.jar\u3011\u8fd9\u4e2ajar<\/p>\n
\u25a0\u5404\u4e2aWebSphere\u7248\u672c\u4e2d，\u7ebf\u7a0b（\u7ebf\u7a0b\u6c60）\u76f8\u5173\u7684jar<\/p>\n
\u25a0WebSphere Liberty \u662f\u4ec0\u4e48<\/p>\n
🚀 \u6838\u5fc3\u7279\u6027<\/p>\n
🏢 \u4e0e\u4f20\u7edf WebSphere \u7684\u5173\u7cfb<\/p>\n
\u25a0\u6211\u5728WebSphere 8.5.5\u4e2d，\u627e\u5230\u4e86runtime.jar,\u4f46\u662f\u91cc\u9762\u6ca1\u6709\u3010com.ibm.ws.threading.WSManagedExecutorService\u3011\u8fd9\u4e2a\u7c7b<\/p>\n
🔍 \u6839\u672c\u539f\u56e0\u5206\u6790<\/p>\n
\u7c7b\u3010com.ibm.ws.threading.ThreadPoolManager\u3011\u4e5f\u6ca1\u6709\u627e\u5230，\u800c\u4e14\u6839\u672c\u4e0d\u5b58\u5728\u00a0com.ibm.ws.threading \u8fd9\u4e2a\u5305\u3002<\/p>\n
\u25a0WorkManager （\u3010JNDI\u3011wm\/default）(\u8fd9\u4e2a\u6709，\u95ee\u989890%\u4ee5\u4e0a\u53ef\u7528\u89e3\u51b3)<\/p>\n
0. \u4ee3\u7801<\/p>\n
1. \u542f\u7528\u5f02\u6b65 Beans \u652f\u6301<\/p>\n
2. \u914d\u7f6e\u8d44\u6e90\u5f15\u7528<\/p>\n
3.\u5b9e\u9645WebSphere\u753b\u9762<\/p>\n
4.\u5173\u4e8e\u3010resource references\u3011\u9700\u8981\u5728\u5b89\u88c5\u65f6\u6307\u5b9a\u3002<\/p>\n
5.WorkManager\u76f8\u5173\u7684JNDI\u3010wm\/default\u3011\u8bbe\u5b9a\u540e\u7684\u6548\u679c<\/p>\n
\n\u25a0\u524d\u8a00<\/h2>\n
Web\u5e94\u7528\u4e2d，\u4e3a\u4e86\u63d0\u9ad8\u6548\u7387，\u67d0\u6bb5\u548c\u4e3b\u4e1a\u52a1\u65e0\u5173\u7684\u5904\u7406，\u4f7f\u7528\u5f02\u6b65\u5904\u7406\u6765\u5904\u7406\u3002<\/span><\/p>\n（\u4f7f\u7528\u7684\u670d\u52a1\u5668\u662fWebSphere）<\/span><\/p>\n\u7ed3\u679c\u62a5\u5982\u4e0b\u9519\u8bef<\/span><\/p>\nWebContextsService getStandardContext Failed to retrieve application name<\/span><\/p>\n\u8fd9\u4e2a\u9519\u8bef\u7684\u539f\u56e0\u662f\u7ebf\u7a0b\u4e0a\u4e0b\u6587\u4e22\u5931\u9020\u6210\u7684，<\/span><\/p>\n\u56e0\u6b64，\u6574\u7406\u89e3\u91ca\u4e00\u4e0b\u4ec0\u4e48\u662f\u7ebf\u7a0b\u4e0a\u4e0b\u6587\u4e22\u5931<\/span><\/p>\n========================================<\/p>\n
\u25a0\u6b63\u6587\u5f00\u59cb<\/h2>\n\u7ebf\u7a0b\u4e0a\u4e0b\u6587\u7684\u6838\u5fc3\u7ec4\u6210\u90e8\u5206<\/h4>\n
\n\u7c7b\u52a0\u8f7d\u5668（ClassLoader）<\/p>\n
\n- \n
Web \u5e94\u7528\u6709\u72ec\u7acb\u7684\u7c7b\u52a0\u8f7d\u5668（\u9694\u79bb\u5176\u4ed6\u5e94\u7528）<\/p>\n<\/li>\n
- \n
\u8d1f\u8d23\u52a0\u8f7d\u5e94\u7528\u4e2d\u7684\u7c7b\u3001\u8d44\u6e90\u548c\u5e93<\/p>\n<\/li>\n
- \n
\u4e22\u5931\u540e\u679c：ClassNotFoundException\u3001NoClassDefFoundError<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
- \n
JNDI（Java Naming and Directory Interface）\u4e0a\u4e0b\u6587<\/p>\n
\n- \n
\u63d0\u4f9b\u5bf9\u5e94\u7528\u670d\u52a1\u5668\u8d44\u6e90\u7684\u8bbf\u95ee（\u5982\u6570\u636e\u6e90\u3001JMS \u961f\u5217）<\/p>\n<\/li>\n
- \n
\u4e22\u5931\u540e\u679c：NamingException\u3001\u65e0\u6cd5\u67e5\u627e\u00a0java:comp\/env\u00a0\u8d44\u6e90<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
- \n
Web \u5e94\u7528\u4e0a\u4e0b\u6587（ServletContext）<\/p>\n
\n- \n
\u5305\u542b Web \u5e94\u7528\u5143\u6570\u636e：\u5e94\u7528\u540d\u79f0\u3001\u4e0a\u4e0b\u6587\u8def\u5f84\u3001\u521d\u59cb\u5316\u53c2\u6570<\/p>\n<\/li>\n
- \n
\u4e22\u5931\u540e\u679c：getStandardContext failed to retrieve application name（\u6211\u9047\u5230\u7684\u9519\u8bef）<\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n- \n
\u5b89\u5168\u4e0a\u4e0b\u6587（Security Context）<\/p>\n
\n- \n
\u5305\u542b\u7528\u6237\u8ba4\u8bc1\/\u6388\u6743\u4fe1\u606f（\u5982 Principal\u3001\u89d2\u8272）<\/p>\n<\/li>\n
- \n
\u4e22\u5931\u540e\u679c：NullPointerException\u00a0\u6216\u6743\u9650\u68c0\u67e5\u5931\u8d25<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
- \n
\u4e8b\u52a1\u4e0a\u4e0b\u6587（Transaction Context）<\/p>\n
\n- \n
\u7ba1\u7406\u6570\u636e\u5e93\u4e8b\u52a1\u8fb9\u754c<\/p>\n<\/li>\n
- \n
\u4e22\u5931\u540e\u679c：\u4e8b\u52a1\u65e0\u6cd5\u63d0\u4ea4\/\u56de\u6eda<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
\n\u4e3a\u4ec0\u4e48\u4f1a\u51fa\u73b0\u4e0a\u4e0b\u6587\u4e22\u5931？<\/h4>\n
- \n
\u7ebf\u7a0b\u521b\u5efa\u65b9\u5f0f<\/p>\n
\/\/ \u81ea\u5b9a\u4e49\u7ebf\u7a0b\u4e0d\u4f1a\u7ee7\u627f\u4e0a\u4e0b\u6587
\nnew Thread(() -> {
\n \/\/ \u6b64\u5904\u4e22\u5931\u6240\u6709\u4e0a\u4e0b\u6587!
\n}).start(); <\/p>\n<\/li>\n
- \n
Web \u5bb9\u5668\u7ba1\u7406\u7684\u7ebf\u7a0b vs \u81ea\u5b9a\u4e49\u7ebf\u7a0b<\/p>\n
\n\u7279\u6027Web \u5bb9\u5668\u7ebf\u7a0b (\u5982 HTTP \u8bf7\u6c42\u7ebf\u7a0b)\u81ea\u5b9a\u4e49\u7ebf\u7a0b<\/tr>\n
\n\n| \u7c7b\u52a0\u8f7d\u5668<\/td>\n | \u81ea\u52a8\u8bbe\u7f6e\u6b63\u786e<\/td>\n | \u9ed8\u8ba4\u4f7f\u7528\u7cfb\u7edf\u7c7b\u52a0\u8f7d\u5668<\/td>\n<\/tr>\n |
\n| JNDI \u4e0a\u4e0b\u6587<\/td>\n | \u81ea\u52a8\u53ef\u7528<\/td>\n | InitialContext()\u00a0\u5931\u8d25<\/td>\n<\/tr>\n |
\n| ServletContext<\/td>\n | \u901a\u8fc7\u00a0getServletContext()\u00a0\u83b7\u53d6<\/td>\n | \u8fd4\u56de\u00a0null\u00a0\u6216\u629b\u51fa\u5f02\u5e38<\/td>\n<\/tr>\n |
\n| \u4e8b\u52a1\u4f20\u64ad<\/td>\n | \u652f\u6301<\/td>\n | \u4e8b\u52a1\u8fb9\u754c\u4e2d\u65ad<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/li>\n- \n
WebSphere \u7684\u4e0a\u4e0b\u6587\u9694\u79bb\u673a\u5236<\/p>\n \n- \n
\u4e3a\u6bcf\u4e2a\u5e94\u7528\u521b\u5efa\u72ec\u7acb\u7684\u6c99\u7bb1\u73af\u5883<\/p>\n<\/li>\n - \n
\u81ea\u5b9a\u4e49\u7ebf\u7a0b\u88ab\u89c6\u4e3a"\u5916\u90e8\u7ebf\u7a0b"，\u65e0\u6743\u8bbf\u95ee\u5e94\u7528\u6c99\u7bb1<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
\n\u76f4\u89c2\u793a\u4f8b\u8bf4\u660e<\/h4>\n\u5047\u8bbe\u5728 Servlet \u4e2d\u542f\u52a8\u7ebf\u7a0b：<\/p>\n public class MyServlet extends HttpServlet {
\n protected void doGet(HttpServletRequest req, HttpServletResponse resp) {
\n \/\/ \u6b63\u786e\u73af\u5883 (\u6709\u4e0a\u4e0b\u6587)
\n String appName = getServletContext().getContextPath(); \/\/ \u6210\u529f\u83b7\u53d6<\/p>\n new Thread(() -> {
\n \/\/ \u5371\u9669\u533a\u57df (\u4e0a\u4e0b\u6587\u4e22\u5931)!
\n try {
\n \/\/ \u5c1d\u8bd5\u83b7\u53d6\u76f8\u540c\u4fe1\u606f
\n Context ctx = new InitialContext();
\n String name = (String) ctx.lookup("java:app\/AppName"); \/\/ \u629b\u51fa\u5f02\u5e38!
\n } catch (NamingException e) {
\n \/\/ \u62a5\u9519: getStandardContext failed to retrieve application name
\n }
\n }).start();
\n }
\n} <\/p>\n
\n\u4e3a\u4ec0\u4e48\u4e0a\u4e0b\u6587\u5982\u6b64\u91cd\u8981？<\/h4>\n\u5f53\u8c03\u7528\u4ee5\u4e0b API \u65f6\u4f1a\u4f9d\u8d56\u4e0a\u4e0b\u6587：<\/p>\n \/\/ \u4f9d\u8d56 Web \u4e0a\u4e0b\u6587
\nservletContext.getResource("\/WEB-INF\/config.xml"); <\/p>\n \/\/ \u4f9d\u8d56 JNDI \u4e0a\u4e0b\u6587
\ndataSource = (DataSource) new InitialContext().lookup("jdbc\/myDB");<\/p>\n \/\/ \u4f9d\u8d56\u7c7b\u52a0\u8f7d\u5668
\nClass.forName("com.myapp.CustomClass"); <\/p>\n \/\/ \u4f9d\u8d56\u5b89\u5168\u4e0a\u4e0b\u6587
\nrequest.isUserInRole("Admin"); <\/p>\n
\n\u89e3\u51b3\u4e0a\u4e0b\u6587\u4e22\u5931\u7684\u5173\u952e<\/h4>\n\u5fc5\u987b\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u4e4b\u4e00\u4f20\u9012\u4e0a\u4e0b\u6587：<\/p>\n - \n
\u663e\u5f0f\u4f20\u9012\u6570\u636e<\/p>\n \/\/ \u5728 Web \u7ebf\u7a0b\u4e2d\u9884\u5148\u83b7\u53d6\u503c
\nString appName = getServletContext().getContextPath();
\nexecutor.submit(new MyTask(appName)); \/\/ \u4f20\u9012\u503c\u800c\u975e\u4f9d\u8d56\u4e0a\u4e0b\u6587 <\/p>\n<\/li>\n - \n
\u4f7f\u7528\u6258\u7ba1\u7ebf\u7a0b\u670d\u52a1（\u63a8\u8350）<\/p>\n @Resource
\nprivate ManagedExecutorService managedExecutor; \/\/ WebSphere \u6258\u7ba1<\/p>\n managedExecutor.submit(() -> {
\n \/\/ WebSphere \u81ea\u52a8\u6ce8\u5165\u4e0a\u4e0b\u6587
\n Context ctx = new InitialContext(); \/\/ \u73b0\u5728\u6b63\u5e38\u5de5\u4f5c\u4e86!
\n}); <\/p>\n<\/li>\n - \n
\u624b\u52a8\u6062\u590d\u4e0a\u4e0b\u6587（\u590d\u6742）<\/p>\n \/\/ \u5728 Web \u7ebf\u7a0b\u4e2d\u6355\u83b7\u5f53\u524d\u7c7b\u52a0\u8f7d\u5668
\nClassLoader originalClassLoader = Thread.currentThread().getContextClassLoader();<\/p>\n new Thread(() -> {
\n \/\/ \u624b\u52a8\u6062\u590d\u7c7b\u52a0\u8f7d\u5668
\n Thread.currentThread().setContextClassLoader(originalClassLoader);
\n \/\/ \u6ce8\u610f：\u8fd9\u65e0\u6cd5\u6062\u590d JNDI \u6216 ServletContext!
\n}).start(); <\/p>\n<\/li>\n
\n\u603b\u7ed3<\/h4>\n\u7ebf\u7a0b\u4e0a\u4e0b\u6587\u4e22\u5931\u672c\u8d28\u662f：\u5f53\u4ee3\u7801\u8131\u79bb Web \u5bb9\u5668\u7ba1\u63a7\u7684\u7ebf\u7a0b\u65f6，\u5e94\u7528\u670d\u52a1\u5668\u65e0\u6cd5\u81ea\u52a8\u63d0\u4f9b\u8fd0\u884c\u6240\u9700\u7684\u73af\u5883\u4fe1\u606f\u3002\u89e3\u51b3\u7684\u5173\u952e\u5728\u4e8e：<\/p>\n - \n
\u907f\u514d\u5728\u81ea\u5b9a\u4e49\u7ebf\u7a0b\u4e2d\u76f4\u63a5\u8bbf\u95ee Web API<\/p>\n<\/li>\n - \n
\u4f7f\u7528\u670d\u52a1\u5668\u6258\u7ba1\u7ebf\u7a0b\u6c60（ManagedExecutorService）<\/p>\n<\/li>\n - \n
\u5728 Web \u7ebf\u7a0b\u4e2d\u9884\u5148\u83b7\u53d6\u6570\u636e\u5e76\u4f20\u9012\u503c<\/p>\n<\/li>\n \u8fd9\u6b63\u662f\u60a8\u9047\u5230\u7684\u00a0getStandardContext failed to retrieve application name\u00a0\u7684\u6839\u672c\u539f\u56e0\u2014\u2014\u81ea\u5b9a\u4e49\u7ebf\u7a0b\u4e2d\u65e0\u6cd5\u5173\u8054\u5230 Web \u5e94\u7528\u7684\u00a0ServletContext\u3002<\/p>\n<\/p>\n ===<\/p>\n<\/p>\n \u25a0\u5982\u679c\u6211\u60f3\u5728servlet\u4e2d\u4f7f\u7528\u7ebf\u7a0b，\u4ee3\u7801\u5e94\u8be5\u5982\u4f55\u5b9e\u73b0<\/h2>\n\u5728 Servlet \u4e2d\u4f7f\u7528\u81ea\u5b9a\u4e49\u7ebf\u7a0b\u65f6，\u4e3a\u4e86\u6b63\u786e\u5904\u7406\u7ebf\u7a0b\u4e0a\u4e0b\u6587\u95ee\u9898（\u7279\u522b\u662f\u5728 WebSphere \u73af\u5883\u4e2d），\u5f3a\u70c8\u63a8\u8350\u4f7f\u7528 Java EE \u6807\u51c6\u7684\u00a0ManagedExecutorService\u3002\u4ee5\u4e0b\u662f\u5b8c\u6574\u7684\u5b9e\u73b0\u65b9\u6848：<\/p>\n \u63a8\u8350\u65b9\u6848：\u4f7f\u7528 ManagedExecutorService（WebSphere \u6258\u7ba1\u7ebf\u7a0b\u6c60）<\/h4>\nimport javax.annotation.Resource;
\nimport javax.servlet.ServletException;
\nimport javax.servlet.annotation.WebServlet;
\nimport javax.servlet.http.HttpServlet;
\nimport javax.servlet.http.HttpServletRequest;
\nimport javax.servlet.http.HttpServletResponse;
\nimport javax.enterprise.concurrent.ManagedExecutorService;
\nimport java.io.IOException;
\nimport java.io.PrintWriter;<\/p>\n @WebServlet("\/asyncTask")
\npublic class ThreadedServlet extends HttpServlet {<\/p>\n \/\/ \u6ce8\u5165 WebSphere \u6258\u7ba1\u7684\u7ebf\u7a0b\u6c60\u670d\u52a1
\n @Resource
\n private ManagedExecutorService managedExecutor;<\/p>\n @Override
\n protected void doGet(HttpServletRequest request, HttpServletResponse response)
\n throws ServletException, IOException {<\/p>\n response.setContentType("text\/plain");
\n PrintWriter out = response.getWriter();<\/p>\n \/\/ \u63d0\u4ea4\u4efb\u52a1\u5230\u6258\u7ba1\u7ebf\u7a0b\u6c60（\u81ea\u52a8\u4f20\u9012\u7ebf\u7a0b\u4e0a\u4e0b\u6587）
\n managedExecutor.submit(() -> {
\n try {
\n \/\/ \u5728\u6258\u7ba1\u7ebf\u7a0b\u4e2d\u5b89\u5168\u8bbf\u95ee\u4e0a\u4e0b\u6587
\n String appName = (String) new InitialContext().lookup("java:app\/AppName");
\n String contextPath = request.getServletContext().getContextPath();<\/p>\n \/\/ \u6267\u884c\u5b9e\u9645\u4e1a\u52a1\u903b\u8f91
\n processTask(appName, contextPath);<\/p>\n out.println("Task completed successfully in managed thread!");
\n } catch (Exception e) {
\n out.println("Error in managed thread: " + e.getMessage());
\n e.printStackTrace();
\n }
\n });<\/p>\n out.println("Background task started using ManagedExecutorService…");
\n }<\/p>\n private void processTask(String appName, String contextPath) {
\n \/\/ \u8fd9\u91cc\u662f\u5b9e\u9645\u7684\u4e1a\u52a1\u903b\u8f91
\n System.out.println("Processing task for application: " + appName);
\n System.out.println("Context path: " + contextPath);
\n \/\/ \u6a21\u62df\u8017\u65f6\u64cd\u4f5c
\n try {
\n Thread.sleep(2000);
\n } catch (InterruptedException e) {
\n Thread.currentThread().interrupt();
\n }
\n }
\n} <\/p>\n \u5907\u9009\u65b9\u6848：\u624b\u52a8\u7ba1\u7406\u7ebf\u7a0b\u4e0a\u4e0b\u6587（\u5982\u679c\u65e0\u6cd5\u4f7f\u7528 ManagedExecutorService）<\/h4>\nimport javax.servlet.ServletException;
\nimport javax.servlet.annotation.WebServlet;
\nimport javax.servlet.http.HttpServlet;
\nimport javax.servlet.http.HttpServletRequest;
\nimport javax.servlet.http.HttpServletResponse;
\nimport java.io.IOException;
\nimport java.io.PrintWriter;
\nimport java.util.concurrent.ExecutorService;
\nimport java.util.concurrent.Executors;
\nimport javax.naming.InitialContext;<\/p>\n @WebServlet("\/manualThread")
\npublic class ManualThreadServlet extends HttpServlet {<\/p>\n \/\/ \u521b\u5efa\u666e\u901a\u7ebf\u7a0b\u6c60（\u4e0d\u63a8\u8350，\u4ec5\u4f5c\u6f14\u793a）
\n private final ExecutorService executor = Executors.newFixedThreadPool(5);<\/p>\n @Override
\n protected void doGet(HttpServletRequest request, HttpServletResponse response)
\n throws ServletException, IOException {<\/p>\n response.setContentType("text\/plain");
\n PrintWriter out = response.getWriter();<\/p>\n \/\/ \u5728Web\u7ebf\u7a0b\u4e2d\u9884\u5148\u83b7\u53d6\u6240\u9700\u4e0a\u4e0b\u6587\u4fe1\u606f
\n final String appName = getPredefinedAppName();
\n final String contextPath = request.getServletContext().getContextPath();
\n final ClassLoader contextClassLoader = Thread.currentThread().getContextClassLoader();<\/p>\n \/\/ \u63d0\u4ea4\u4efb\u52a1\u5230\u666e\u901a\u7ebf\u7a0b\u6c60
\n executor.submit(() -> {
\n \/\/ \u4fdd\u5b58\u539f\u59cb\u7c7b\u52a0\u8f7d\u5668（\u7528\u4e8e\u6062\u590d）
\n ClassLoader originalClassLoader = Thread.currentThread().getContextClassLoader();<\/p>\n try {
\n \/\/ \u624b\u52a8\u8bbe\u7f6e\u4e0a\u4e0b\u6587\u7c7b\u52a0\u8f7d\u5668
\n Thread.currentThread().setContextClassLoader(contextClassLoader);<\/p>\n \/\/ \u4f7f\u7528\u9884\u5148\u83b7\u53d6\u7684\u4e0a\u4e0b\u6587\u4fe1\u606f
\n processTask(appName, contextPath);<\/p>\n out.println("Task completed in manual thread!");
\n } catch (Exception e) {
\n out.println("Error in manual thread: " + e.getMessage());
\n e.printStackTrace();
\n } finally {
\n \/\/ \u6062\u590d\u539f\u59cb\u7c7b\u52a0\u8f7d\u5668
\n Thread.currentThread().setContextClassLoader(originalClassLoader);
\n }
\n });<\/p>\n out.println("Background task started using manual thread…");
\n }<\/p>\n private String getPredefinedAppName() {
\n try {
\n \/\/ \u5728Web\u7ebf\u7a0b\u4e2d\u9884\u5148\u83b7\u53d6\u5e94\u7528\u540d\u79f0
\n return (String) new InitialContext().lookup("java:app\/AppName");
\n } catch (Exception e) {
\n return "default-app";
\n }
\n }<\/p>\n private void processTask(String appName, String contextPath) {
\n \/\/ \u4e1a\u52a1\u903b\u8f91\u540c\u4e0a
\n }<\/p>\n @Override
\n public void destroy() {
\n \/\/ \u5173\u95ed\u7ebf\u7a0b\u6c60
\n executor.shutdown();
\n super.destroy();
\n }
\n} <\/p>\n \u5173\u952e\u914d\u7f6e\u6b65\u9aa4（WebSphere \u63a7\u5236\u53f0）<\/h4>\n - \n
\u542f\u7528\u5e76\u53d1\u7b56\u7565：<\/p>\n \n- \n
\u767b\u5f55 WebSphere \u7ba1\u7406\u63a7\u5236\u53f0<\/p>\n<\/li>\n - \n
\u5bfc\u822a\u5230：\u8d44\u6e90 > \u5e76\u53d1\u7b56\u7565<\/p>\n<\/li>\n - \n
\u521b\u5efa\u6216\u4f7f\u7528\u9ed8\u8ba4\u7684\u5e76\u53d1\u7b56\u7565<\/p>\n<\/li>\n<\/ul>\n<\/li>\n - \n
\u7ed1\u5b9a\u5230\u5e94\u7528（\u53ef\u9009，\u901a\u5e38\u81ea\u52a8\u6ce8\u5165\u5373\u53ef\u5de5\u4f5c）： \u5728\u00a0ibm-application-bnd.xml\u00a0\u4e2d\u6dfb\u52a0：<\/p>\n <application-bnd>
\n <managed-executor-service name="concurrent\/executorSvc" \/>
\n<\/application-bnd> <\/li>\n \u4e24\u79cd\u65b9\u6848\u5bf9\u6bd4<\/h4>\n\n\u7279\u6027ManagedExecutorService\u624b\u52a8\u7ebf\u7a0b\u7ba1\u7406<\/tr>\n \n\n| \u4e0a\u4e0b\u6587\u4f20\u64ad<\/td>\n | \u81ea\u52a8\u5b8c\u6574\u4f20\u64ad（\u7c7b\u52a0\u8f7d\u5668\u3001JNDI\u3001\u5b89\u5168\u7b49）<\/td>\n | \u4ec5\u80fd\u624b\u52a8\u4f20\u9012\u7c7b\u52a0\u8f7d\u5668<\/td>\n<\/tr>\n | \n| \u8d44\u6e90\u7ba1\u7406<\/td>\n | WebSphere \u81ea\u52a8\u7ba1\u7406\u751f\u547d\u5468\u671f<\/td>\n | \u9700\u624b\u52a8\u5173\u95ed\u7ebf\u7a0b\u6c60<\/td>\n<\/tr>\n | \n| \u4e8b\u52a1\u652f\u6301<\/td>\n | \u652f\u6301\u4e8b\u52a1\u4e0a\u4e0b\u6587\u4f20\u64ad<\/td>\n | \u4e0d\u652f\u6301\u4e8b\u52a1\u4f20\u64ad<\/td>\n<\/tr>\n | \n| Servlet API \u8bbf\u95ee<\/td>\n | \u53ef\u76f4\u63a5\u8bbf\u95ee（\u5982\u00a0request\u3001response）<\/td>\n | \u53ea\u80fd\u8bbf\u95ee\u9884\u5148\u83b7\u53d6\u7684\u6570\u636e<\/td>\n<\/tr>\n | \n| WebSphere \u517c\u5bb9\u6027<\/td>\n | \u5b8c\u5168\u517c\u5bb9<\/td>\n | \u53ef\u80fd\u4ecd\u6709\u4e0a\u4e0b\u6587\u95ee\u9898<\/td>\n<\/tr>\n | \n| \u4ee3\u7801\u590d\u6742\u5ea6<\/td>\n | \u7b80\u5355（\u58f0\u660e\u5f0f\u6ce8\u5165）<\/td>\n | \u590d\u6742（\u9700\u624b\u52a8\u7ba1\u7406\u4e0a\u4e0b\u6587）<\/td>\n<\/tr>\n | \n| \u63a8\u8350\u5ea6<\/td>\n | \u2b50\u2b50\u2b50\u2b50\u2b50（\u9996\u9009\u65b9\u6848）<\/td>\n | \u2b50\u2b50（\u5907\u9009\u65b9\u6848）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\u6700\u4f73\u5b9e\u8df5\u5efa\u8bae<\/h4>\n- \n
\u9996\u9009\u6258\u7ba1\u7ebf\u7a0b\u6c60：<\/p>\n @Resource
\nprivate ManagedExecutorService executor; \/\/ \u59cb\u7ec8\u4f7f\u7528\u8fd9\u4e2a <\/li>\n - \n
\u907f\u514d\u5728\u5b50\u7ebf\u7a0b\u4e2d\u76f4\u63a5\u4f7f\u7528 Servlet API：<\/p>\n \/\/ \u9519\u8bef\u505a\u6cd5（\u53ef\u80fd\u5f15\u53d1\u95ee\u9898）：
\nmanagedExecutor.submit(() -> {
\n request.getSession(); \/\/ \u53ef\u80fd\u4e0d\u5b89\u5168
\n});<\/p>\n \/\/ \u6b63\u786e\u505a\u6cd5（\u9884\u5148\u83b7\u53d6\u6240\u9700\u6570\u636e）：
\nString sessionId = request.getSession().getId();
\nmanagedExecutor.submit(() -> processSession(sessionId)); <\/li>\n - \n
\u5904\u7406\u7ebf\u7a0b\u4e2d\u7684\u5f02\u5e38：<\/p>\n managedExecutor.submit(() -> {
\n try {
\n \/\/ \u4e1a\u52a1\u903b\u8f91
\n } catch (Exception e) {
\n \/\/ 1. \u8bb0\u5f55\u65e5\u5fd7
\n \/\/ 2. \u4e0d\u8981\u541e\u6389\u5f02\u5e38
\n \/\/ 3. \u8003\u8651\u901a\u77e5\u4e3b\u7ebf\u7a0b
\n }
\n}); <\/p>\n<\/li>\n - \n
\u751f\u547d\u5468\u671f\u7ba1\u7406：<\/p>\n \n- \n
\u4e0d\u9700\u8981\u624b\u52a8\u5173\u95ed\u00a0ManagedExecutorService<\/p>\n<\/li>\n - \n
\u5bf9\u4e8e\u666e\u901a\u7ebf\u7a0b\u6c60，\u5728\u00a0Servlet.destroy()\u00a0\u4e2d\u5173\u95ed：<\/p>\n @Override
\npublic void destroy() {
\n executor.shutdown();
\n try {
\n if (!executor.awaitTermination(10, TimeUnit.SECONDS)) {
\n executor.shutdownNow();
\n }
\n } catch (InterruptedException e) {
\n executor.shutdownNow();
\n Thread.currentThread().interrupt();
\n }
\n} <\/p>\n<\/li>\n<\/ul>\n<\/li>\n \u5b8c\u6574\u793a\u4f8b（\u751f\u4ea7\u7ea7\u4ee3\u7801）<\/h4>\n@WebServlet("\/task")
\npublic class ProductionReadyServlet extends HttpServlet {<\/p>\n @Resource
\n private ManagedExecutorService managedExecutor;<\/p>\n private static final Logger logger = LoggerFactory.getLogger(ProductionReadyServlet.class);<\/p>\n @Override
\n protected void doGet(HttpServletRequest req, HttpServletResponse resp)
\n throws IOException {<\/p>\n \/\/ \u9884\u5148\u83b7\u53d6\u6240\u9700\u4e0a\u4e0b\u6587\u4fe1\u606f
\n String appName = (String) req.getServletContext().getAttribute("app.name");
\n String clientIP = req.getRemoteAddr();<\/p>\n \/\/ \u63d0\u4ea4\u4efb\u52a1
\n managedExecutor.submit(new TrackedTask(appName, clientIP));<\/p>\n resp.getWriter().write("Task submitted successfully");
\n }<\/p>\n \/\/ \u5c01\u88c5\u4efb\u52a1\u7684\u5185\u90e8\u7c7b
\n private class TrackedTask implements Runnable {
\n private final String appName;
\n private final String clientIP;<\/p>\n TrackedTask(String appName, String clientIP) {
\n this.appName = appName;
\n this.clientIP = clientIP;
\n }<\/p>\n @Override
\n public void run() {
\n MDC.put("app", appName); \/\/ \u65e5\u5fd7\u4e0a\u4e0b\u6587
\n MDC.put("client", clientIP);<\/p>\n try {
\n logger.info("Starting background task");
\n \/\/ \u4e1a\u52a1\u903b\u8f91…
\n logger.info("Task completed");
\n } catch (Exception e) {
\n logger.error("Task failed", e);
\n } finally {
\n MDC.clear();
\n }
\n }
\n }
\n} <\/p>\n \u4f7f\u7528\u8fd9\u79cd\u6a21\u5f0f，\u60a8\u53ef\u4ee5：<\/p>\n - \n
\u5b89\u5168\u5730\u5728\u540e\u53f0\u7ebf\u7a0b\u6267\u884c\u4efb\u52a1<\/p>\n<\/li>\n - \n
\u4fdd\u7559\u5fc5\u8981\u7684\u4e0a\u4e0b\u6587\u4fe1\u606f<\/p>\n<\/li>\n - \n
\u83b7\u5f97\u5b8c\u5584\u7684\u9519\u8bef\u5904\u7406\u548c\u65e5\u5fd7\u8ddf\u8e2a<\/p>\n<\/li>\n - \n
\u5b8c\u5168\u517c\u5bb9 WebSphere \u73af\u5883<\/p>\n<\/li>\n - \n
\u907f\u514d\u00a0getStandardContext failed\u00a0\u9519\u8bef<\/p>\n<\/li>\n \u5bf9\u4e8e\u5927\u591a\u6570\u573a\u666f，\u4f7f\u7528\u00a0ManagedExecutorService\u00a0\u5e76\u9075\u5faa\u4e0a\u8ff0\u6a21\u5f0f\u5373\u53ef\u89e3\u51b3\u7ebf\u7a0b\u4e0a\u4e0b\u6587\u95ee\u9898\u3002<\/p>\n<\/p>\n ==<\/p>\n \u25a0ManagedExecutorService \u8fd9\u4e2a\u7c7b，\u5728\u90a3\u4e2ajar\u4e2d<\/h2>\n\u89c4\u8303\u5b9a\u4e49\u5305（\u901a\u7528）<\/h4>\n | |
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611231133-684a0d2527845.png\")
<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611231133-684a0d254dfed.png\")
<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611231133-684a0d25a6b99.png\")
<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611231134-684a0d260039b.png\")
<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611231134-684a0d2649978.png\")
<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611231134-684a0d269f968.png\")
<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611231135-684a0d2703156.png\")
<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611231135-684a0d2793446.png\")
<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611231136-684a0d282f200.png\")
<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611231136-684a0d2885395.png\")
<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611231137-684a0d2943948.png\")
<\/p>\n