{"id":121452,"date":"2026-11-02T20:56:37","date_gmt":"2026-11-02T12:56:37","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/121452.html"},"modified":"2026-11-02T20:56:37","modified_gmt":"2026-11-02T12:56:37","slug":"%e5%be%ae%e6%9c%8d%e5%8a%a1%e6%9e%b6%e6%9e%84%e8%90%bd%e5%9c%b0%ef%bc%9a%e4%b8%9a%e5%8a%a1%e5%9f%9f%e5%85%a8%e6%99%af%e4%b8%8e-ddd-%e8%90%bd%e5%9c%b0-%e5%a6%82%e4%bd%95%e9%81%bf","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/121452.html","title":{"rendered":"\u5fae\u670d\u52a1\u67b6\u6784\u843d\u5730\uff1a\u4e1a\u52a1\u57df\u5168\u666f\u4e0e DDD \u843d\u5730 \u2014\u2014 \u5982\u4f55\u907f\u514d\u628a\u5fae\u670d\u52a1\u5199\u6210\u201c\u5206\u5e03\u5f0f\u5355\u4f53\u201d\uff1f"},"content":{"rendered":"

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\u2502\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\u00a0 \u00a0 \u00a0 \u00a0\u2502\u00a0 \u00a0 \u00a0 \u00a0\u25bc\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\u2502 \u3010\u4e1a\u8d22\u4e0e\u534f\u540c\u57df\u3011 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u2502\u2502 \u5e94\u6536\u5e94\u4ed8 | \u5f00\u7968(\u91d1\u7a0e) | \u94f6\u4f01\u76f4\u8054 | \u5ba2\u8bc9\u5de5\u5355 | \u5f02\u5e38\u5ba1\u6279\u6d41 | \u8d22\u52a1\u603b\u8d26(\u5bf9\u63a5ERP) \u00a0\u2502\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<\/p>\n

    \u4ece\u5168\u666f\u56fe\u53ef\u4ee5\u770b\u51fa，\u5927\u5b97\u5546\u54c1\u771f\u6b63\u7684\u6838\u5fc3\u4e1a\u52a1\u57df\u4e0d\u4ec5\u5305\u542b\u57fa\u7840\u7684\u9500\u91c7\u8fd0\u50a8，\u8fd8\u8981\u6df1\u5ea6\u5d4c\u5165\u98ce\u63a7\u3001\u91d1\u878d\u548c\u4e1a\u8d22\u4e00\u4f53\u5316\u3002<\/p>\n<\/p>\n

    \"\u56fe\u7247\"<\/p>\n

    \n

    \u4e09\u3001DDD \u843d\u5730\u7b2c\u4e00\u6b65：\u5212\u5206\u9650\u754c\u4e0a\u4e0b\u6587（Bounded Context）<\/h3>\n

    DDD \u7684\u6838\u5fc3\u601d\u60f3\u662f：\u5fae\u670d\u52a1\u4e0d\u662f\u6309\u201c\u8868\u201d\u62c6，\u4e5f\u4e0d\u662f\u6309\u201c\u524d\u7aef\u83dc\u5355\u201d\u62c6，\u800c\u662f\u6309\u201c\u4e1a\u52a1\u80fd\u529b\u7684\u8fb9\u754c\u201d\u62c6\u3002<\/p>\n

    \u7ed3\u5408\u5927\u5b97\u5546\u54c1\u7279\u70b9，\u6211\u4eec\u628a\u7cfb\u7edf\u5212\u5206\u4e3a\u4e94\u5927\u6838\u5fc3\u9650\u754c\u4e0a\u4e0b\u6587：<\/p>\n

  • \n

    \u4ea4\u6613\u4e0a\u4e0b\u6587：\u6838\u5fc3\u57df\u3002\u53ea\u7ba1\u5546\u52a1\u884c\u4e3a（\u5ba2\u6237\u62a5\u4ef7\u3001\u9500\u552e\u5f00\u5355\u3001\u91c7\u8d2d\u5bfb\u6e90\u3001\u5408\u540c\u751f\u6210）\u3002<\/p>\n<\/li>\n

  • \n

    \u5c65\u7ea6\u4e0a\u4e0b\u6587：\u652f\u6491\u57df\u3002\u53ea\u7ba1\u7269\u7406\u6267\u884c（\u53d1\u8d27\u6307\u4ee4\u3001\u6d3e\u8f66\u8c03\u5ea6\u3001\u591a\u5f0f\u8054\u8fd0\u3001\u8fc7\u78c5\u9632\u4f5c\u5f0a）\u3002<\/p>\n<\/li>\n

  • \n

    \u5e93\u5b58\u4e0a\u4e0b\u6587：\u6838\u5fc3\u57df\u3002\u53ea\u7ba1\u7269\u6743\u4e0e\u6570\u91cf（\u6279\u6b21\u7ba1\u7406\u3001\u5e93\u4f4d\u5206\u914d\u3001\u8d27\u6743\u8f6c\u79fb\u3001\u76d8\u70b9）\u3002<\/p>\n<\/li>\n

  • \n

    \u98ce\u63a7\u4e0e\u91d1\u878d\u4e0a\u4e0b\u6587：\u652f\u6491\u57df\u3002\u53ea\u7ba1\u94b1\u7684\u5b89\u5168（\u4fe1\u7528\u989d\u5ea6\u6821\u9a8c\u3001\u4fdd\u8bc1\u91d1\u51bb\u7ed3\u4e0e\u91ca\u653e）\u3002<\/p>\n<\/li>\n

  • \n

    \u4e1a\u8d22\u4e0a\u4e0b\u6587：\u901a\u7528\u57df\u3002\u53ea\u7ba1\u5bf9\u8d26\u4e0e\u5f00\u7968（\u5e94\u6536\u5e94\u4ed8\u3001\u53d1\u7968\u5f00\u5177\u3001\u8d22\u52a1\u51ed\u8bc1\u751f\u6210）\u3002<\/p>\n<\/li>\n

    \u4e0a\u4e0b\u6587\u4e4b\u95f4\u600e\u4e48\u4ea4\u4e92？
    \n\u7edd\u5bf9\u4e0d\u5141\u8bb8\u76f4\u63a5\u8bfb\u5bf9\u65b9\u7684\u6570\u636e\u5e93（\u5fae\u670d\u52a1\u7ea2\u7ebf）\u3002\u5fc5\u987b\u901a\u8fc7\u00a0\u9886\u57df\u4e8b\u4ef6（Domain Event）\u00a0\u6216\u00a0RPC \u63a5\u53e3\u3002
    \n\u4f8b\u5982：\u9500\u552e\u5f00\u5355\u6210\u529f，\u4ea4\u6613\u4e0a\u4e0b\u6587\u53d1\u5e03\u4e00\u4e2a\u00a0OrderCreatedEvent，\u5c65\u7ea6\u4e0a\u4e0b\u6587\u76d1\u542c\u5230\u540e，\u751f\u6210\u6d3e\u8f66\u4efb\u52a1；\u98ce\u63a7\u4e0a\u4e0b\u6587\u5f02\u6b65\u6263\u51cf\u5ba2\u6237\u6388\u4fe1\u989d\u5ea6\u3002<\/p>\n<\/p>\n

    \"\u56fe\u7247\"<\/p>\n

    \n

    \u56db\u3001DDD \u843d\u5730\u7b2c\u4e8c\u6b65：\u805a\u5408\u6839（Aggregate Root）\u8bbe\u8ba1<\/h3>\n

    \u5728\u5fae\u670d\u52a1\u5185\u90e8，\u5355\u636e\u8868\u600e\u4e48\u8bbe\u8ba1？\u5927\u5b97\u5546\u54c1\u7684\u5355\u636e\u5934（Order）\u548c\u5355\u636e\u660e\u7ec6（OrderItem）\u5fc5\u987b\u653e\u5728\u4e00\u8d77，\u4e0d\u80fd\u62c6\u6210\u4e24\u4e2a\u670d\u52a1\u3002\u5728 DDD \u4e2d，\u8fd9\u53eb\u805a\u5408（Aggregate）\u3002<\/p>\n

    \u4ee5\u201c\u9500\u552e\u8ba2\u5355\u201d\u4e3a\u4f8b：<\/p>\n

      \n
    • \n

      \u805a\u5408\u6839（Aggregate Root）：\u9500\u552e\u8ba2\u5355\u3002\u5b83\u662f\u5916\u90e8\u8bbf\u95ee\u7684\u552f\u4e00\u5165\u53e3\u3002<\/p>\n<\/li>\n

    • \n

      \u5b9e\u4f53（Entity）：\u8ba2\u5355\u660e\u7ec6\u3001\u63d0\u8d27\u6307\u4ee4\u3002\u5b83\u4eec\u4f9d\u9644\u4e8e\u8ba2\u5355\u5b58\u5728\u3002<\/p>\n<\/li>\n

    • \n

      \u503c\u5bf9\u8c61（Value Object）：\u4ef7\u683c（\u91d1\u989d+\u5e01\u79cd）\u3001\u91cd\u91cf（\u6570\u503c+\u5355\u4f4d）\u3001\u5316\u9a8c\u6307\u6807\u3002\u4fee\u6539\u5fc5\u987b\u5168\u91cf\u66ff\u6362\u3002<\/p>\n<\/li>\n<\/ul>\n

      \u805a\u5408\u6839\u6838\u5fc3\u4ee3\u7801\u793a\u4f8b：<\/p>\n

      @Entity
      \npublic class SaleOrder {
      \n @Id
      \n private String orderNo; \/\/ \u91c7\u7528\u6301\u4e45\u5c42\u8bb2\u8fc7\u7684\u96ea\u82b1\u7b97\u6cd5\u751f\u6210<\/p>\n

      private String customerId;<\/p>\n

      private OrderStatus status;<\/p>\n

      \/\/ \u5f3a\u5173\u8054\u7684\u5b50\u5b9e\u4f53\u96c6\u5408
      \n @OneToMany(mappedBy = "order", cascade = CascadeType.ALL)
      \n private List<OrderItem> items;<\/p>\n

      private Money totalAmount; <\/p>\n

      \/\/ \u4e1a\u52a1\u884c\u4e3a：\u521b\u5efa\u8ba2\u5355
      \n public void createOrder() {
      \n \/\/ 1. \u6821\u9a8c\u5ba2\u6237\u4fe1\u7528\u989d\u5ea6 (\u8c03\u7528\u98ce\u63a7\u57df\u63a5\u53e3)
      \n \/\/ 2. \u6821\u9a8c\u5b9e\u65f6\u5e93\u5b58 (\u8c03\u7528\u5e93\u5b58\u57df\u63a5\u53e3)
      \n \/\/ 3. \u8ba1\u7b97\u603b\u4ef7\u4e0e\u4fdd\u8bc1\u91d1
      \n \/\/ 4. \u89e6\u53d1\u9886\u57df\u4e8b\u4ef6：OrderCreatedEvent
      \n }
      \n}<\/p>\n

      \u4e1a\u52a1\u89c4\u8303：\u5916\u90e8\u670d\u52a1（\u5982\u8d22\u52a1\u7cfb\u7edf）\u60f3\u8981\u67e5\u67d0\u4e2a\u8ba2\u5355，\u5fc5\u987b\u901a\u8fc7\u00a0SaleOrderService\u00a0\u53bb\u67e5，\u7edd\u5bf9\u4e0d\u5141\u8bb8\u76f4\u63a5\u5199 SQL \u64cd\u4f5c\u00a0t_order_item\u00a0\u8868\u3002<\/p>\n

      \n

      \u4e94\u3001DDD \u843d\u5730\u7b2c\u4e09\u6b65：\u9632\u8150\u5c42（ACL）\u9694\u79bb\u5916\u90e8\u751f\u6001\u7684\u201c\u70c2\u4ee3\u7801\u201d<\/h3>\n

      \u5927\u5b97\u5546\u54c1\u5e73\u53f0\u662f\u4e2a\u5de8\u5927\u7684\u96c6\u6210\u4e2d\u5fc3\u3002\u9664\u4e86\u8001\u65e7\u7684 ERP\u3001\u8d22\u52a1\u5171\u4eab\u7cfb\u7edf\u3001\u7b2c\u4e09\u65b9\u7269\u6d41\u5e73\u53f0\u3001\u7535\u5b50\u53d1\u7968\u7cfb\u7edf\u7b49\u3002<\/p>\n

      \u5982\u679c\u4f60\u76f4\u63a5\u628a\u5bf9\u63a5\u786c\u4ef6\u7684\u4ee3\u7801\u5199\u5728\u201c\u5e93\u5b58\u57df\u201d，\u628a\u5bf9\u63a5\u671f\u8d27\u7684\u4ee3\u7801\u5199\u5728\u201c\u4ea4\u6613\u57df\u201d，\u7cfb\u7edf\u7acb\u523b\u53d8\u6210\u610f\u5927\u5229\u9762\u6761\u3002<\/p>\n

      \u6211\u4eec\u9700\u8981\u5f15\u5165\u9632\u8150\u5c42（Anti-Corruption Layer, ACL）\u3002<\/p>\n

      [\u4e1a\u52a1\u6838\u5fc3\u57df]\u00a0\u00a0 \u00a0\u2502 \u8c03\u7528 IssueInvoiceUseCase (\u5185\u90e8\u9886\u57df\u63a5\u53e3)\u00a0 \u00a0\u25bc[\u9632\u8150\u5c42 ACL (\u72ec\u7acb\u7684 Integration \u5fae\u670d\u52a1)]\u00a0\u00a0 \u00a0\u2502\u00a01. \u6a21\u578b\u8f6c\u6362：\u5c06\u5185\u90e8\u8fc7\u78c5\u5355\u8f6c\u4e3a\u5730\u78c5\u786c\u4ef6\u534f\u8bae\u00a0 \u00a0\u2502\u00a02. \u534f\u8bae\u9002\u914d：\u5c06 HTTP \u8f6c\u4e3a TCP\/IP \/ WebService \/ MQ\u00a0 \u00a0\u2502\u00a03. \u5f02\u5e38\u91cd\u8bd5\u4e0e\u786c\u4ef6\u9632\u6296\u00a0 \u00a0\u25bc[\u5916\u90e8\u751f\u6001\u73af\u5883：\u7535\u5b50\u53d1\u7968\/\u94f6\u4f01\/\u7269\u6d41\/\u7269\u8054\u7f51\u8bbe\u5907]<\/p>\n

      \u8bbe\u8ba1\u539f\u5219：\u4e0d\u7ba1\u5916\u90e8\u7cfb\u7edf\u6216\u786c\u4ef6\u957f\u4ec0\u4e48\u6837，\u4e1a\u52a1\u57df\u5185\u90e8\u6c38\u8fdc\u53ea\u8ba4\u81ea\u5df1\u7684\u9886\u57df\u6a21\u578b\u3002\u5916\u90e8\u7cfb\u7edf\u7684\u53d8\u5316\u88ab\u6b7b\u6b7b\u6321\u5728\u9632\u8150\u5c42\u91cc\u3002<\/p>\n<\/p>\n

      \"\u56fe\u7247\"<\/p>\n

      \n

      \u516d\u3001\u4e1a\u52a1\u5c42\u4e0e\u524d\u6587\u5e95\u5ea7\u7684\u8054\u52a8（\u7edd\u4e0d\u662f\u5728\u5b64\u5c9b\u4e0a\u5199\u4ee3\u7801）<\/h3>\n

      \u6211\u4eec\u5728\u5199\u4e1a\u52a1\u5c42\u65f6，\u7edd\u4e0d\u662f\u4ece\u96f6\u5f00\u59cb，\u800c\u662f\u8981\u65f6\u523b\u8c03\u7528\u524d\u9762\u5efa\u597d\u7684\u5e95\u5ea7：<\/p>\n

    • \n

      \u4e0e\u4e2d\u95f4\u4ef6\u8054\u52a8：\u4ea4\u6613\u57df\u5f00\u5355\u6210\u529f\u540e，\u4e0d\u76f4\u63a5\u8c03\u7528\u5c65\u7ea6\u57df\u63a5\u53e3，\u800c\u662f\u53d1\u4e00\u6761\u00a0OrderCreatedEvent\u00a0\u5230\u00a0RocketMQ，\u7531\u5c65\u7ea6\u57df\u5f02\u6b65\u6d88\u8d39，\u5b9e\u73b0\u4e1a\u52a1\u89e3\u8026\u3002<\/p>\n<\/li>\n

    • \n

      \u4e0e\u6301\u4e45\u5c42\u8054\u52a8：\u5728\u521b\u5efa\u8ba2\u5355\u7684\u805a\u5408\u6839\u65f6，\u8ba2\u5355\u53f7\u76f4\u63a5\u8c03\u7528\u6301\u4e45\u5c42\u7bc7\u4e2d\u8bb2\u8fc7\u7684\u96ea\u82b1\u7b97\u6cd5（Snowflake）\u751f\u6210，\u4e14 ID \u7684\u4f4e 4 \u4f4d\u76f4\u63a5\u5d4c\u5165\u5ba2\u6237 ID \u7684\u57fa\u56e0，\u65b9\u4fbf\u540e\u7eed\u5206\u7247\u8def\u7531\u3002<\/p>\n<\/li>\n

    • \n

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