{"id":793,"date":"2023-06-30T18:14:00","date_gmt":"2023-08-05T11:49:00","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/google-guice-%e4%be%9d%e8%b5%96%e6%b3%a8%e5%85%a5%e5%ae%9e%e4%be%8b%e6%95%99%e7%a8%8b\/"},"modified":"2025-08-03T08:04:08","modified_gmt":"2025-08-03T00:04:08","slug":"google-guice-%e4%be%9d%e8%b5%96%e6%b3%a8%e5%85%a5%e5%ae%9e%e4%be%8b%e6%95%99%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/google-guice-%e4%be%9d%e8%b5%96%e6%b3%a8%e5%85%a5%e5%ae%9e%e4%be%8b%e6%95%99%e7%a8%8b\/","title":{"rendered":"Google Guice\u4f9d\u8d56\u6ce8\u5165\u6846\u67b6\u5b8c\u5168\u6307\u5357\uff1a\u4ece\u5165\u95e8\u5230\u5b9e\u4f8b\u5e94\u7528"},"content":{"rendered":"

Google Guice \u4f9d\u8d56\u6ce8\u5165\u5b9e\u4f8b\u6559\u7a0b<\/h2>\n

Google Guice\u662f\u4e00\u4e2a\u7528\u4e8e\u81ea\u52a8\u5316\u5e94\u7528\u7a0b\u5e8f\u4e2d\u4f9d\u8d56\u6ce8\u5165\u7684\u6846\u67b6\u3002\u5982\u679c\u60a8\u76f4\u63a5\u9605\u8bfb\u672c\u6587\uff0c\u5efa\u8bae\u60a8\u5148\u67e5\u770b\u4f9d\u8d56\u6ce8\u5165\u793a\u4f8b\uff0c\u4e86\u89e3\u4f20\u7edf\u5bf9\u8c61\u521b\u5efa\u65b9\u6cd5\u7684\u95ee\u9898\u4ee5\u53ca\u4f9d\u8d56\u6ce8\u5165\u7684\u5b9e\u65bd\u4f18\u52bf\u3002\u5728\u4e0a\u4e00\u6559\u7a0b\u4e2d\uff0c\u6211\u4eec\u5b66\u4e60\u4e86\u5982\u4f55\u624b\u52a8\u5b9e\u73b0\u4f9d\u8d56\u6ce8\u5165\u3002\u4f46\u5f53\u5e94\u7528\u7a0b\u5e8f\u4e2d\u7684\u7c7b\u6570\u91cf\u589e\u591a\u65f6\uff0c\u6700\u597d\u5bfb\u627e\u4e00\u4e9b\u6846\u67b6\u6765\u81ea\u52a8\u5316\u8fd9\u4e2a\u4efb\u52a1\u3002Google Guice\u662f\u5176\u4e2d\u4e00\u4e2a\u4e3b\u8981\u6846\u67b6\uff0c\u5176\u4e3b\u8981\u5de5\u4f5c\u662f\u63d0\u4f9b\u4f9d\u8d56\u6ce8\u5165\u7684\u81ea\u52a8\u5b9e\u73b0\u3002\u6211\u4eec\u5c06\u7ee7\u7eed\u4f7f\u7528\u4e0a\u4e00\u7bc7\u6587\u7ae0\u4e2d\u7684\u793a\u4f8b\uff0c\u5b66\u4e60\u5982\u4f55\u4f7f\u7528Google Guice\u81ea\u52a8\u8fdb\u884c\u4f9d\u8d56\u6ce8\u5165\u7684\u5b9e\u73b0\u8fc7\u7a0b\u3002Google Guice\u7684\u4f9d\u8d56\u9879\u53ef\u4ee5\u5728Maven\u4e2d\u592e\u5e93\u4e2d\u627e\u5230\uff0c\u56e0\u6b64\u5bf9\u4e8eMaven\u9879\u76ee\uff0c\u60a8\u53ef\u4ee5\u6dfb\u52a0\u4ee5\u4e0b\u4f9d\u8d56\u9879\uff1a<\/p>\n

<dependency>\r\n\t<groupId>com.google.inject<\/groupId>\r\n\t<artifactId>guice<\/artifactId>\r\n\t<version>3.0<\/version>\r\n<\/dependency>\r\n<\/code><\/pre>\n
\u5982\u679c\u60a8\u6709\u4e00\u4e2a\u7b80\u5355\u7684Java\u5e94\u7528\u7a0b\u5e8f\uff0c\u90a3\u4e48\u60a8\u53ef\u4ee5\u4eceGoogle Guice\u5728Google Code\u7684\u4e3b\u9875\u4e0a\u4e0b\u8f7djar\u6587\u4ef6\u3002\u8bf7\u6ce8\u610f\uff0c\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u60a8\u8fd8\u9700\u8981\u5728\u7c7b\u8def\u5f84\u4e2d\u5305\u542b\u5176\u4f20\u9012\u4f9d\u8d56\uff0c\u5426\u5219\u5c06\u4f1a\u51fa\u73b0\u8fd0\u884c\u65f6\u5f02\u5e38\u3002\u4ee5\u6211\u7684\u4f8b\u5b50\u4e3a\u4f8b\uff0c\u6211\u6709\u4e00\u4e2aMaven\u9879\u76ee\uff0c\u5176\u9879\u76ee\u7ed3\u6784\u5982\u4e0b\u56fe\u6240\u793a\u3002\u8ba9\u6211\u4eec\u9010\u4e2a\u67e5\u770b\u6bcf\u4e2a\u7ec4\u4ef6\u3002<\/p>\n
\u670d\u52a1\u63a5\u53e3<\/h3>\n
package com.Olivia.di.services;\r\n\r\npublic interface MessageService {\r\n\r\n\tboolean sendMessage(String msg, String receipient);\r\n}\r\n<\/code><\/pre>\n
MessageService \u63a5\u53e3\u4e3a\u670d\u52a1\u63d0\u4f9b\u57fa\u7840\u5408\u7ea6\u3002<\/p>\n
package com.Olivia.di.services;\r\n\r\nimport javax.inject.Singleton;\r\n\r\n\/\/import com.google.inject.Singleton;\r\n\r\n@Singleton\r\npublic class EmailService implements MessageService {\r\n\r\n\tpublic boolean sendMessage(String msg, String receipient) {\r\n\t\t\/\/\u53d1\u9001\u7535\u5b50\u90ae\u4ef6\u7684\u4e00\u4e9b\u590d\u6742\u4ee3\u7801\r\n\t\tSystem.out.println(\"\u90ae\u4ef6\u5df2\u53d1\u9001\u81f3 \"+receipient+\"\uff0c\u5185\u5bb9\u4e3a\uff1a\"+msg);\r\n\t\treturn true;\r\n\t}\r\n\r\n}\r\n<\/code><\/pre>\n
EmailService\u662fMessageService\u7684\u4e00\u79cd\u5b9e\u73b0\u3002\u8bf7\u6ce8\u610f\uff0c\u8be5\u7c7b\u5df2\u7528@Singleton\u6ce8\u89e3\u8fdb\u884c\u4e86\u6807\u8bb0\u3002\u7531\u4e8e\u670d\u52a1\u5bf9\u8c61\u5c06\u901a\u8fc7\u6ce8\u5165\u5668\u7c7b\u521b\u5efa\uff0c\u56e0\u6b64\u63d0\u4f9b\u4e86\u6b64\u6ce8\u89e3\u4ee5\u8ba9\u6846\u67b6\u77e5\u9053\u670d\u52a1\u7c7b\u5e94\u8be5\u662f\u5355\u4f8b\u5bf9\u8c61\u3002Google Guice 3.0\u65b0\u589e\u4e86\u5bf9JSR-330\u7684\u652f\u6301\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528com.google.inject\u6216javax.inject\u5305\u4e2d\u7684\u6ce8\u89e3\u3002\u5047\u8bbe\u6211\u4eec\u8fd8\u6709\u53e6\u4e00\u4e2a\u670d\u52a1\u5b9e\u73b0\u6765\u53d1\u9001Facebook\u6d88\u606f\uff1a<\/p>\n
package com.Olivia.di.services;\r\n\r\nimport javax.inject.Singleton;\r\n\r\n\/\/import com.google.inject.Singleton;\r\n\r\n@Singleton\r\npublic class FacebookService implements MessageService {\r\n\r\n\tpublic boolean sendMessage(String msg, String receipient) {\r\n\t\t\/\/\u53d1\u9001Facebook\u6d88\u606f\u7684\u4e00\u4e9b\u590d\u6742\u4ee3\u7801\r\n\t\tSystem.out.println(\"Facebook\u6d88\u606f\u5df2\u53d1\u9001\u81f3\u7528\u6237 \"+receipient+\"\uff0c\u5185\u5bb9\u4e3a\uff1a\"+msg);\r\n\t\treturn true;\r\n\t}\r\n\r\n}\r\n<\/code><\/pre>\n
\u6d88\u8d39\u8005\u7c7b<\/h3>\n
\u65e2\u7136\u6211\u4eec\u5728\u5e94\u7528\u7a0b\u5e8f\u4e2d\u5b9e\u65bd\u4e86\u4f9d\u8d56\u6ce8\u5165\uff0c\u56e0\u6b64\u6211\u4eec\u4e0d\u4f1a\u5728\u5e94\u7528\u7a0b\u5e8f\u4e2d\u76f4\u63a5\u521d\u59cb\u5316\u670d\u52a1\u7c7b\u3002Google Guice\u652f\u6301\u57fa\u4e8esetter\u548c\u6784\u9020\u51fd\u6570\u7684\u4e24\u79cd\u4f9d\u8d56\u6ce8\u5165\u65b9\u5f0f\u3002\u6211\u4eec\u4f7f\u7528\u670d\u52a1\u7684\u5e94\u7528\u7a0b\u5e8f\u7c7b\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
package com.Olivia.di.consumer;\r\n\r\nimport javax.inject.Inject;\r\n\r\n\/\/import com.google.inject.Inject;\r\nimport com.Olivia.di.services.MessageService;\r\n\r\npublic class MyApplication {\r\n\r\n\tprivate MessageService service;\r\n\t\r\n\t\/\/\u57fa\u4e8e\u6784\u9020\u51fd\u6570\u7684\u6ce8\u5165\r\n\t\/\/ @Inject\r\n\t\/\/ public MyApplication(MessageService svc){\r\n\t\/\/ \tthis.service=svc;\r\n\t\/\/ }\r\n\t\r\n\t\/\/\u57fa\u4e8esetter\u65b9\u6cd5\u7684\u6ce8\u5165\r\n\t@Inject\r\n\tpublic void setService(MessageService svc){\r\n\t\tthis.service=svc;\r\n\t}\r\n\t\r\n\tpublic boolean sendMessage(String msg, String rec){\r\n\t\t\/\/\u6b64\u5904\u662f\u4e00\u4e9b\u4e1a\u52a1\u903b\u8f91\r\n\t\treturn service.sendMessage(msg, rec);\r\n\t}\r\n}\r\n<\/code><\/pre>\n
\u8bf7\u6ce8\u610f\uff0c\u6211\u5bf9\u6784\u9020\u51fd\u6570\u6ce8\u5165\u7684\u4ee3\u7801\u8fdb\u884c\u4e86\u6ce8\u91ca\uff0c\u5f53\u60a8\u7684\u5e94\u7528\u7a0b\u5e8f\u8fd8\u63d0\u4f9b\u4e86\u5176\u4ed6\u4e0d\u9700\u8981\u670d\u52a1\u7c7b\u5bf9\u8c61\u7684\u529f\u80fd\u65f6\uff0c\u8fd9\u5c06\u975e\u5e38\u65b9\u4fbf\u3002\u8fd8\u8bf7\u6ce8\u610f@Inject\u6ce8\u89e3\uff0c\u8fd9\u5c06\u88abGoogle Guice\u7528\u4e8e\u6ce8\u5165\u670d\u52a1\u5b9e\u73b0\u7c7b\u3002\u5982\u679c\u60a8\u5bf9\u6ce8\u89e3\u4e0d\u719f\u6089\uff0c\u8bf7\u67e5\u770bJava\u6ce8\u89e3\u6559\u7a0b\u3002<\/p>\n
\u670d\u52a1\u7ed1\u5b9a\u5b9e\u73b0<\/h3>\n
\u663e\u7136\uff0cGoogle Guice\u5e76\u4e0d\u77e5\u9053\u8981\u4f7f\u7528\u54ea\u4e2a\u670d\u52a1\u5b9e\u73b0\uff0c\u6211\u4eec\u5fc5\u987b\u901a\u8fc7\u6269\u5c55AbstractModule\u62bd\u8c61\u7c7b\u5e76\u4e3aconfigure()\u65b9\u6cd5\u63d0\u4f9b\u5b9e\u73b0\u6765\u8fdb\u884c\u914d\u7f6e\uff1a<\/p>\n
package com.Olivia.di.injector;\r\n\r\nimport com.google.inject.AbstractModule;\r\nimport com.Olivia.di.services.EmailService;\r\nimport com.Olivia.di.services.FacebookService;\r\nimport com.Olivia.di.services.MessageService;\r\n\r\npublic class AppInjector extends AbstractModule {\r\n\r\n\t@Override\r\n\tprotected void configure() {\r\n\t\t\/\/\u5c06\u670d\u52a1\u7ed1\u5b9a\u5230\u5b9e\u73b0\u7c7b\r\n\t\t\/\/bind(MessageService.class).to(EmailService.class);\r\n\t\t\r\n\t\t\/\/\u5c06MessageService\u7ed1\u5b9a\u5230Facebook\u6d88\u606f\u5b9e\u73b0\r\n\t\tbind(MessageService.class).to(FacebookService.class);\r\n\t\t\r\n\t}\r\n\r\n}\r\n<\/code><\/pre>\n
\u6b63\u5982\u60a8\u6240\u89c1\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u4efb\u4f55\u5b9e\u73b0\u7ed1\u5b9a\u5230\u670d\u52a1\u63a5\u53e3\u3002\u4f8b\u5982\uff0c\u5982\u679c\u6211\u4eec\u60f3\u8981\u66f4\u6539\u4e3aEmailService\uff0c\u53ea\u9700\u6539\u53d8\u7ed1\u5b9a\u5373\u53ef\u3002<\/p>\n
\u5ba2\u6237\u7aef\u5e94\u7528\u7a0b\u5e8f<\/h3>\n
\u6211\u4eec\u7684\u8bbe\u7f6e\u5df2\u7ecf\u51c6\u5907\u597d\u4e86\uff0c\u8ba9\u6211\u4eec\u770b\u770b\u5982\u4f55\u5728\u4e00\u4e2a\u7b80\u5355\u7684Java\u7c7b\u4e2d\u4f7f\u7528\u5b83\uff1a<\/p>\n
package com.Olivia.di.test;\r\n\r\nimport com.google.inject.Guice;\r\nimport com.google.inject.Injector;\r\n\r\nimport com.Olivia.di.consumer.MyApplication;\r\nimport com.Olivia.di.injector.AppInjector;\r\n\r\npublic class ClientApplication {\r\n\r\n\tpublic static void main(String[] args) {\r\n\t\tInjector injector = Guice.createInjector(new AppInjector());\t\t\r\n\t\t\r\n\t\tMyApplication app = injector.getInstance(MyApplication.class);\r\n\t\t\r\n\t\tapp.sendMessage(\"\u4f60\u597d Pankaj\", \"scdev@abc.com\");\r\n\t}\r\n\r\n}\r\n<\/code><\/pre>\n
\u5b9e\u73b0\u975e\u5e38\u5bb9\u6613\u7406\u89e3\u3002\u6211\u4eec\u9700\u8981\u4f7f\u7528Guice\u7c7b\u7684createInjector()\u65b9\u6cd5\u521b\u5efaInjector\u5bf9\u8c61\uff0c\u5176\u4e2d\u6211\u4eec\u4f20\u5165\u6211\u4eec\u7684\u5b9e\u73b0\u4e86injector\u7c7b\u7684\u5bf9\u8c61\u3002\u7136\u540e\u6211\u4eec\u4f7f\u7528injector\u6765\u521d\u59cb\u5316\u6211\u4eec\u7684\u6d88\u8d39\u8005\u7c7b\u3002\u5982\u679c\u6211\u4eec\u8fd0\u884c\u4e0a\u8ff0\u7c7b\uff0c\u5b83\u5c06\u4ea7\u751f\u4ee5\u4e0b\u8f93\u51fa\uff1a<\/p>\n
Facebook\u6d88\u606f\u5df2\u53d1\u9001\u81f3\u7528\u6237 scdev@abc.com\uff0c\u5185\u5bb9\u4e3a\uff1a\u4f60\u597d Pankaj\r\n<\/code><\/pre>\n
\u5982\u679c\u6211\u4eec\u5728AppInjector\u7c7b\u4e2d\u66f4\u6539\u5bf9EmailService\u7684\u7ed1\u5b9a\uff0c\u90a3\u4e48\u5c06\u4ea7\u751f\u4ee5\u4e0b\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n
\u90ae\u4ef6\u5df2\u53d1\u9001\u81f3 scdev@abc.com\uff0c\u5185\u5bb9\u4e3a\uff1a\u4f60\u597d Pankaj\r\n<\/code><\/pre>\n
JUnit\u6d4b\u8bd5\u7528\u4f8b<\/h3>\n
\u56e0\u4e3a\u6211\u4eec\u60f3\u8981\u6d4b\u8bd5MyApplication\u7c7b\uff0c\u6240\u4ee5\u6211\u4eec\u4e0d\u9700\u8981\u521b\u5efa\u5b9e\u9645\u7684\u670d\u52a1\u5b9e\u73b0\u3002\u6211\u4eec\u53ef\u4ee5\u6709\u4e00\u4e2a\u7b80\u5355\u7684\u6a21\u62df\u670d\u52a1\u5b9e\u73b0\u7c7b\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
package com.Olivia.di.services;\r\n\r\npublic class MockMessageService implements MessageService{\r\n\r\n\tpublic boolean sendMessage(String msg, String receipient) {\r\n\t\treturn true;\r\n\t}\r\n\r\n}\r\n<\/code><\/pre>\n
\u6211\u7684JUnit 4\u6d4b\u8bd5\u7c7b\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
package com.Olivia.di.test;\r\n\r\n\r\nimport org.junit.After;\r\nimport org.junit.Assert;\r\nimport org.junit.Before;\r\nimport org.junit.Test;\r\n\r\nimport com.google.inject.AbstractModule;\r\nimport com.google.inject.Guice;\r\nimport com.google.inject.Injector;\r\nimport com.Olivia.di.consumer.MyApplication;\r\nimport com.Olivia.di.services.MessageService;\r\nimport com.Olivia.di.services.MockMessageService;\r\n\r\npublic class MyApplicationTest {\r\n\r\n\tprivate Injector injector;\r\n\t\r\n\t@Before\r\n\tpublic void setUp() throws Exception {\r\n\t\tinjector = Guice.createInjector(new AbstractModule() {\r\n\t\t\t\r\n\t\t\t@Override\r\n\t\t\tprotected void configure() {\r\n\t\t\t\tbind(MessageService.class).to(MockMessageService.class);\r\n\t\t\t}\r\n\t\t});\r\n\t}\r\n\r\n\t@After\r\n\tpublic void tearDown() throws Exception {\r\n\t\tinjector = null;\r\n\t}\r\n\r\n\t@Test\r\n\tpublic void test() {\r\n\t\tMyApplication appTest = injector.getInstance(MyApplication.class);\r\n\t\tAssert.assertEquals(true, appTest.sendMessage(\"\u4f60\u597d Pankaj\", \"scdev@abc.com\"));\r\n\t}\r\n\r\n}\r\n<\/code><\/pre>\n
\u8bf7\u6ce8\u610f\uff0c\u6211\u901a\u8fc7\u4f7f\u7528\u533f\u540d\u7c7b\u5b9e\u73b0AbstractModule\uff0c\u5c06MockMessageService\u7c7b\u4e0eMessageService\u8fdb\u884c\u7ed1\u5b9a\u3002\u8fd9\u662f\u5728\u8fd0\u884c\u6d4b\u8bd5\u65b9\u6cd5\u4e4b\u524d\u7684setUp()\u65b9\u6cd5\u4e2d\u5b8c\u6210\u7684\u3002<\/p>\n
\u4e0b\u8f7dGoogle Guice\u9879\u76ee<\/h3>\n
Google Guice\u793a\u4f8b\u6559\u7a0b\u5c31\u4ecb\u7ecd\u5230\u8fd9\u91cc\u3002\u5728\u5e94\u7528\u4e2d\u4f7f\u7528Google Guice\u5b9e\u73b0\u4f9d\u8d56\u6ce8\u5165\u975e\u5e38\u7b80\u5355\u4e14\u6709\u6548\u3002\u5b83\u88ab\u7528\u4e8eGoogle\u7684API\u4e2d\uff0c\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u8ba4\u4e3a\u5b83\u7ecf\u8fc7\u4e86\u9ad8\u5ea6\u6d4b\u8bd5\uff0c\u5e76\u4e14\u662f\u53ef\u9760\u7684\u4ee3\u7801\u3002\u4ece\u4e0a\u9762\u4e0b\u8f7d\u8be5\u9879\u76ee\u5e76\u8fdb\u884c\u5c1d\u8bd5\uff0c\u4ee5\u4e86\u89e3\u66f4\u591a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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