{"id":244,"date":"2024-02-17T07:30:37","date_gmt":"2022-11-30T10:46:53","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/java-%e4%b8%ad%e7%9a%84%e4%b8%ad%e4%bb%8b%e8%80%85%e8%ae%be%e8%ae%a1%e6%a8%a1%e5%bc%8f\/"},"modified":"2025-08-01T02:51:00","modified_gmt":"2025-07-31T18:51:00","slug":"java-%e4%b8%ad%e7%9a%84%e4%b8%ad%e4%bb%8b%e8%80%85%e8%ae%be%e8%ae%a1%e6%a8%a1%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/java-%e4%b8%ad%e7%9a%84%e4%b8%ad%e4%bb%8b%e8%80%85%e8%ae%be%e8%ae%a1%e6%a8%a1%e5%bc%8f\/","title":{"rendered":"Java\u4e2d\u4ecb\u8005\u6a21\u5f0f\u6df1\u5ea6\u89e3\u6790\uff1a\u7b80\u5316\u590d\u6742\u7cfb\u7edf\u4ea4\u4e92"},"content":{"rendered":"<p>\u4e2d\u4ecb\u8005\u8bbe\u8ba1\u6a21\u5f0f\u662f\u884c\u4e3a\u8bbe\u8ba1\u6a21\u5f0f\u4e4b\u4e00\uff0c\u5b83\u5904\u7406\u5bf9\u8c61\u7684\u884c\u4e3a\u3002\u4e2d\u4ecb\u8005\u8bbe\u8ba1\u6a21\u5f0f\u7528\u4e8e\u4e3a\u7cfb\u7edf\u4e2d\u7684\u4e0d\u540c\u5bf9\u8c61\u63d0\u4f9b\u4e00\u4e2a\u96c6\u4e2d\u7684\u6c9f\u901a\u5a92\u4ecb\u3002<\/p>\n<h2>\u4e2d\u4ecb\u8005\u8bbe\u8ba1\u6a21\u5f0f\u8be6\u89e3<\/h2>\n<p>\u6839\u636e\u300a\u8bbe\u8ba1\u6a21\u5f0f\u300b\u7684\u89e3\u91ca\uff0c\u4e2d\u4ecb\u8005\u6a21\u5f0f\u7684\u76ee\u7684\u662f\uff1a<\/p>\n<blockquote><p>\u901a\u8fc7\u5c01\u88c5\u4e0d\u540c\u5bf9\u8c61\u4e4b\u95f4\u7684\u4ea4\u4e92\u548c\u901a\u4fe1\u65b9\u5f0f\uff0c\u5b9e\u73b0\u4e86\u677e\u8026\u5408\u3002\u4f7f\u5f97\u6bcf\u4e2a\u5bf9\u8c61\u96c6\u5408\u7684\u52a8\u4f5c\u53ef\u4ee5\u72ec\u7acb\u4e8e\u5176\u4ed6\u5bf9\u8c61\u96c6\u5408\u8fdb\u884c\u53d8\u5316\u3002<\/p><\/blockquote>\n<p>\u4e2d\u4ecb\u8005\u8bbe\u8ba1\u6a21\u5f0f\u5728\u4f01\u4e1a\u5e94\u7528\u4e2d\u975e\u5e38\u6709\u5e2e\u52a9\uff0c\u5c24\u5176\u662f\u5728\u591a\u4e2a\u5bf9\u8c61\u76f8\u4e92\u4ea4\u4e92\u7684\u60c5\u51b5\u4e0b\u3002\u5982\u679c\u5bf9\u8c61\u76f4\u63a5\u76f8\u4e92\u4ea4\u4e92\uff0c\u7cfb\u7edf\u7ec4\u4ef6\u4e4b\u95f4\u5c31\u4f1a\u7d27\u5bc6\u8026\u5408\uff0c\u8fd9\u4f1a\u589e\u52a0\u7ef4\u62a4\u6210\u672c\u5e76\u4e14\u4e0d\u6613\u6269\u5c55\u3002\u4e2d\u4ecb\u8005\u6a21\u5f0f\u4e13\u6ce8\u4e8e\u4e3a\u5bf9\u8c61\u63d0\u4f9b\u901a\u4fe1\u4e2d\u4ecb\uff0c\u5e76\u5e2e\u52a9\u5b9e\u73b0\u5bf9\u8c61\u4e4b\u95f4\u7684\u677e\u8026\u5408\u3002\u822a\u7a7a\u4ea4\u901a\u7ba1\u5236\u5458\u662f\u4e2d\u4ecb\u8005\u6a21\u5f0f\u7684\u4e00\u4e2a\u5f88\u597d\u7684\u4f8b\u5b50\uff0c\u673a\u573a\u63a7\u5236\u5ba4\u4f5c\u4e3a\u4e0d\u540c\u822a\u73ed\u4e4b\u95f4\u901a\u4fe1\u7684\u4e2d\u4ecb\u3002\u4e2d\u4ecb\u8005\u5728\u5bf9\u8c61\u4e4b\u95f4\u5145\u5f53\u8def\u7531\u5668\u7684\u89d2\u8272\uff0c\u5e76\u4e14\u53ef\u4ee5\u6709\u81ea\u5df1\u7684\u903b\u8f91\u6765\u63d0\u4f9b\u901a\u4fe1\u65b9\u5f0f\u3002\u76f8\u4e92\u901a\u4fe1\u7684\u7cfb\u7edf\u5bf9\u8c61\u79f0\u4e3a\u201c\u540c\u4e8b\u201d\u3002\u901a\u5e38\u6211\u4eec\u6709\u4e00\u4e2a\u63a5\u53e3\u6216\u62bd\u8c61\u7c7b\u6765\u63d0\u4f9b\u901a\u4fe1\u7ea6\u5b9a\uff0c\u7136\u540e\u6211\u4eec\u6709\u4e2d\u4ecb\u8005\u7684\u5177\u4f53\u5b9e\u73b0\u3002\u5bf9\u4e8e\u6211\u4eec\u7684\u793a\u4f8b\uff0c\u6211\u4eec\u5c06\u5c1d\u8bd5\u5b9e\u73b0\u4e00\u4e2a\u804a\u5929\u5e94\u7528\u7a0b\u5e8f\uff0c\u7528\u6237\u53ef\u4ee5\u8fdb\u884c\u7fa4\u804a\u3002\u6bcf\u4e2a\u7528\u6237\u5c06\u901a\u8fc7\u5176\u540d\u79f0\u8fdb\u884c\u6807\u8bc6\uff0c\u4ed6\u4eec\u53ef\u4ee5\u53d1\u9001\u548c\u63a5\u6536\u6d88\u606f\u3002\u4efb\u4f55\u7528\u6237\u53d1\u9001\u7684\u6d88\u606f\u90fd\u5e94\u8be5\u88ab\u7fa4\u7ec4\u4e2d\u7684\u6240\u6709\u5176\u4ed6\u7528\u6237\u63a5\u6536\u5230\u3002<\/p>\n<h3>\u4e2d\u4ecb\u8005\u6a21\u5f0f\u63a5\u53e3<\/h3>\n<p>\u9996\u5148\uff0c\u6211\u4eec\u5c06\u521b\u5efa\u4e00\u4e2a<code>Mediator<\/code>\u63a5\u53e3\uff0c\u7528\u4e8e\u5b9a\u4e49\u5177\u4f53\u4e2d\u4ecb\u8005\u7684\u5951\u7ea6\u3002\u6587\u4ef6\u540d\u4e3a <code>ChatMediator.java<\/code>\u3002<\/p>\n<pre class=\"post-pre\"><code class=\"language-java\">package com.Olivia.design.mediator;\r\n\r\npublic interface ChatMediator {\r\n\tpublic void sendMessage(String msg, User user);\r\n\tvoid addUser(User user);\r\n}\r\n<\/code><\/pre>\n<h3>\u4e2d\u4ecb\u8005\u6a21\u5f0f\u540c\u4e8b\u63a5\u53e3<\/h3>\n<p>\u7528\u6237\u53ef\u4ee5\u53d1\u9001\u548c\u63a5\u6536\u6d88\u606f\uff0c\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u6709\u7528\u6237\u754c\u9762\u6216\u62bd\u8c61\u7c7b\u3002\u6211\u6b63\u5728\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a <code>User.java<\/code> \u7684\u62bd\u8c61\u7c7b\uff0c\u5982\u4e0b\u6240\u793a\u3002<\/p>\n<pre class=\"post-pre\"><code class=\"language-java\">package com.Olivia.design.mediator;\r\n\r\npublic abstract class User {\r\n\tprotected ChatMediator mediator;\r\n\tprotected String name;\r\n\t\r\n\tpublic User(ChatMediator med, String name){\r\n\t\tthis.mediator=med;\r\n\t\tthis.name=name;\r\n\t}\r\n\t\r\n\tpublic abstract void send(String msg);\r\n\t\r\n\tpublic abstract void receive(String msg);\r\n}\r\n<\/code><\/pre>\n<p>\u8bf7\u6ce8\u610f\uff0c\u7528\u6237\u62e5\u6709\u5bf9\u4e2d\u4ecb\u5bf9\u8c61\u7684\u5f15\u7528\uff0c\u8fd9\u5bf9\u4e8e\u4e0d\u540c\u7528\u6237\u4e4b\u95f4\u7684\u901a\u4fe1\u662f\u5fc5\u9700\u7684\u3002<\/p>\n<h3>\u5177\u4f53\u4e2d\u4ecb\u8005\u5b9e\u73b0<\/h3>\n<p>\u73b0\u5728\u6211\u4eec\u5c06\u521b\u5efa\u5177\u4f53\u7684\u4e2d\u4ecb\u8005\u7c7b\uff0c\u5b83\u5c06\u62e5\u6709\u4e00\u4e2a\u7528\u6237\u5217\u8868\uff0c\u5e76\u63d0\u4f9b\u7528\u6237\u4e4b\u95f4\u901a\u4fe1\u7684\u903b\u8f91\u3002\u6587\u4ef6\u540d\u4e3a <code>ChatMediatorImpl.java<\/code>\u3002<\/p>\n<pre class=\"post-pre\"><code class=\"language-java\">package com.Olivia.design.mediator;\r\n\r\nimport java.util.ArrayList;\r\nimport java.util.List;\r\n\r\npublic class ChatMediatorImpl implements ChatMediator {\r\n\r\n\tprivate List&lt;User&gt; users;\r\n\t\r\n\tpublic ChatMediatorImpl(){\r\n\t\tthis.users=new ArrayList&lt;&gt;();\r\n\t}\r\n\t\r\n\t@Override\r\n\tpublic void addUser(User user){\r\n\t\tthis.users.add(user);\r\n\t}\r\n\t\r\n\t@Override\r\n\tpublic void sendMessage(String msg, User user) {\r\n\t\tfor(User u : this.users){\r\n\t\t\t\/\/\u6d88\u606f\u4e0d\u5e94\u53d1\u9001\u7ed9\u53d1\u9001\u8005\u672c\u4eba\r\n\t\t\tif(u != user){\r\n\t\t\t\tu.receive(msg);\r\n\t\t\t}\r\n\t\t}\r\n\t}\r\n\r\n}\r\n<\/code><\/pre>\n<h3>\u4e2d\u4ecb\u8005\u8bbe\u8ba1\u6a21\u5f0f\u5177\u4f53\u540c\u4e8b\u5b9e\u73b0<\/h3>\n<p>\u73b0\u5728\u6211\u4eec\u53ef\u4ee5\u521b\u5efa\u5177\u4f53\u7684\u7528\u6237\u7c7b\uff0c\u4f9b\u5ba2\u6237\u7aef\u7cfb\u7edf\u4f7f\u7528\u3002\u6587\u4ef6\u540d\u4e3a <code>UserImpl.java<\/code>\u3002<\/p>\n<pre class=\"post-pre\"><code class=\"language-java\">package com.Olivia.design.mediator;\r\n\r\npublic class UserImpl extends User {\r\n\r\n\tpublic UserImpl(ChatMediator med, String name) {\r\n\t\tsuper(med, name);\r\n\t}\r\n\r\n\t@Override\r\n\tpublic void send(String msg){\r\n\t\tSystem.out.println(this.name+\": \u53d1\u9001\u6d88\u606f=\"+msg);\r\n\t\tmediator.sendMessage(msg, this);\r\n\t}\r\n\t@Override\r\n\tpublic void receive(String msg) {\r\n\t\tSystem.out.println(this.name+\": \u63a5\u6536\u6d88\u606f:\"+msg);\r\n\t}\r\n\r\n}\r\n<\/code><\/pre>\n<p>\u8bf7\u6ce8\u610f\uff0c<code>send()<\/code> \u65b9\u6cd5\u4f7f\u7528\u4e2d\u4ecb\u8005\u5c06\u6d88\u606f\u53d1\u9001\u7ed9\u7528\u6237\uff0c\u5e76\u4e14\u4e0d\u77e5\u9053\u4e2d\u4ecb\u8005\u4f1a\u5982\u4f55\u5904\u7406\u8be5\u6d88\u606f\u3002<\/p>\n<h3>\u4e2d\u4ecb\u8005\u6a21\u5f0f\u793a\u4f8b\u5ba2\u6237\u7aef\u7a0b\u5e8f\u4ee3\u7801<\/h3>\n<p>\u8ba9\u6211\u4eec\u4f7f\u7528\u4e00\u4e2a\u7b80\u5355\u7684\u7a0b\u5e8f\u6765\u6d4b\u8bd5\u6211\u4eec\u7684\u804a\u5929\u5e94\u7528\uff0c\u521b\u5efa\u4e00\u4e2a\u4e2d\u4ecb\u5e76\u5c06\u7528\u6237\u6dfb\u52a0\u5230\u7fa4\u7ec4\u4e2d\uff0c\u5176\u4e2d\u4e00\u4e2a\u7528\u6237\u5c06\u53d1\u9001\u4e00\u6761\u6d88\u606f\u3002\u6587\u4ef6\u540d\u4e3a <code>ChatClient.java<\/code>\u3002<\/p>\n<pre class=\"post-pre\"><code class=\"language-java\">package com.Olivia.design.mediator;\r\n\r\npublic class ChatClient {\r\n\r\n\tpublic static void main(String[] args) {\r\n\t\tChatMediator mediator = new ChatMediatorImpl();\r\n\t\tUser user1 = new UserImpl(mediator, \"Pankaj\");\r\n\t\tUser user2 = new UserImpl(mediator, \"Lisa\");\r\n\t\tUser user3 = new UserImpl(mediator, \"Saurabh\");\r\n\t\tUser user4 = new UserImpl(mediator, \"David\");\r\n\t\tmediator.addUser(user1);\r\n\t\tmediator.addUser(user2);\r\n\t\tmediator.addUser(user3);\r\n\t\tmediator.addUser(user4);\r\n\t\t\r\n\t\tuser1.send(\"\u5927\u5bb6\u597d\");\r\n\t\t\r\n\t}\r\n\r\n}\r\n<\/code><\/pre>\n<p>\u8bf7\u6ce8\u610f\uff0c\u5ba2\u6237\u7aef\u7a0b\u5e8f\u975e\u5e38\u7b80\u5355\uff0c\u5bf9\u4e8e\u6d88\u606f\u7684\u5904\u7406\u65b9\u5f0f\u4ee5\u53ca\u4e2d\u4ecb\u8005\u662f\u5426\u83b7\u53d6\u7528\u6237\u5e76\u6ca1\u6709\u4efb\u4f55\u4e86\u89e3\u3002\u4e2d\u4ecb\u8005\u6a21\u5f0f\u793a\u4f8b\u7a0b\u5e8f\u7684\u8f93\u51fa\u662f\uff1a<\/p>\n<pre class=\"post-pre\"><code class=\"language-text\">Pankaj: \u53d1\u9001\u6d88\u606f=\u5927\u5bb6\u597d\r\nLisa: \u63a5\u6536\u6d88\u606f:\u5927\u5bb6\u597d\r\nSaurabh: \u63a5\u6536\u6d88\u606f:\u5927\u5bb6\u597d\r\nDavid: \u63a5\u6536\u6d88\u606f:\u5927\u5bb6\u597d\r\n<\/code><\/pre>\n<h3>\u4e2d\u4ecb\u8005\u6a21\u5f0f\u7c7b\u56fe<\/h3>\n<p><img decoding=\"async\" src=\"your_image_path_here\" alt=\"\u4e2d\u4ecb\u8005\u6a21\u5f0f\u7c7b\u56fe\"><\/p>\n<h3>JDK \u4e2d\u7684\u4e2d\u4ecb\u8005\u6a21\u5f0f\u793a\u4f8b<\/h3>\n<ul class=\"post-ul\">\n<li><code>java.util.Timer<\/code> \u7c7b\u7684 <code>scheduleXXX()<\/code> \u65b9\u6cd5\u3002<\/li>\n<li>Java \u5e76\u53d1\u5305\u4e2d <code>Executor<\/code> \u7684 <code>execute()<\/code> \u65b9\u6cd5\u3002<\/li>\n<li><code>java.lang.reflect.Method<\/code> \u7684 <code>invoke()<\/code> \u65b9\u6cd5\u3002<\/li>\n<\/ul>\n<h3>\u4e2d\u4ecb\u8005\u8bbe\u8ba1\u6a21\u5f0f\u7684\u91cd\u8981\u8981\u70b9<\/h3>\n<ul class=\"post-ul\">\n<li>\u5f53\u5bf9\u8c61\u4e4b\u95f4\u7684\u901a\u4fe1\u903b\u8f91\u590d\u6742\u65f6\uff0c\u4e2d\u4ecb\u8005\u6a21\u5f0f\u975e\u5e38\u6709\u7528\uff0c\u6211\u4eec\u53ef\u4ee5\u6709\u4e00\u4e2a\u96c6\u4e2d\u7684\u901a\u4fe1\u70b9\u6765\u5904\u7406\u901a\u4fe1\u903b\u8f91\u3002<\/li>\n<li>Java \u6d88\u606f\u670d\u52a1 (JMS) 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