{"id":844,"date":"2023-10-16T20:36:31","date_gmt":"2023-06-26T18:47:13","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/spring-bean%e8%8c%83%e5%9b%b4\/"},"modified":"2025-08-03T12:27:14","modified_gmt":"2025-08-03T04:27:14","slug":"spring-bean%e8%8c%83%e5%9b%b4","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/spring-bean%e8%8c%83%e5%9b%b4\/","title":{"rendered":"Spring Bean\u4f5c\u7528\u57df\u5b8c\u5168\u6307\u5357\uff1asingleton\u3001prototype\u7b49\u8303\u56f4\u8be6\u89e3"},"content":{"rendered":"

Spring Bean\u4f5c\u7528\u57df\u5141\u8bb8\u6211\u4eec\u66f4\u52a0\u7cbe\u7ec6\u5730\u63a7\u5236bean\u5b9e\u4f8b\u7684\u521b\u5efa\u3002\u6709\u65f6\u6211\u4eec\u5e0c\u671b\u5c06bean\u5b9e\u4f8b\u521b\u5efa\u4e3a\u5355\u4f8b\uff0c\u4f46\u5728\u5176\u4ed6\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u53ef\u80fd\u5e0c\u671b\u5728\u6bcf\u4e2a\u8bf7\u6c42\u4e2d\u521b\u5efa\u5b83\uff0c\u6216\u8005\u5728\u4f1a\u8bdd\u4e2d\u521b\u5efa\u4e00\u6b21\u3002<\/p>\n

Spring Bean \u4f5c\u7528\u57df<\/h2>\n

\u6709\u4e94\u79cd\u7c7b\u578b\u7684Spring Bean\u4f5c\u7528\u57df\uff1a<\/p>\n

    \n
  1. \u5355\u4f8b – \u5728spring\u5bb9\u5668\u4e2d\u53ea\u4f1a\u521b\u5efa\u4e00\u4e2aspring bean\u5b9e\u4f8b\u3002\u8fd9\u662f\u9ed8\u8ba4\u7684spring bean\u8303\u56f4\u3002\u5728\u4f7f\u7528\u8fd9\u4e2a\u8303\u56f4\u65f6\uff0c\u786e\u4fddbean\u6ca1\u6709\u5171\u4eab\u5b9e\u4f8b\u53d8\u91cf\uff0c\u5426\u5219\u53ef\u80fd\u5bfc\u81f4\u6570\u636e\u4e00\u81f4\u6027\u95ee\u9898\u3002<\/li>\n
  2. \u539f\u578b – \u6bcf\u6b21\u4ecespring\u5bb9\u5668\u4e2d\u8bf7\u6c42bean\u65f6\u90fd\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5b9e\u4f8b\u3002<\/li>\n
  3. \u8bf7\u6c42 – \u8fd9\u4e0e\u539f\u578b\u8303\u56f4\u76f8\u540c\uff0c\u4f46\u5b83\u9002\u7528\u4e8eWeb\u5e94\u7528\u7a0b\u5e8f\u3002\u6bcf\u4e2aHTTP\u8bf7\u6c42\u90fd\u4f1a\u4e3abean\u521b\u5efa\u4e00\u4e2a\u65b0\u5b9e\u4f8b\u3002<\/li>\n
  4. \u4f1a\u8bdd – \u5bb9\u5668\u4f1a\u4e3a\u6bcf\u4e2aHTTP\u4f1a\u8bdd\u521b\u5efa\u4e00\u4e2a\u65b0\u7684bean\u3002<\/li>\n
  5. \u5168\u5c40\u4f1a\u8bdd – \u7528\u4e8e\u4e3a\u95e8\u6237\u5e94\u7528\u7a0b\u5e8f\u521b\u5efa\u5168\u5c40\u4f1a\u8bddbean\u3002<\/li>\n<\/ol>\n

    Spring Bean\u7684\u5355\u4f8b\uff08Singleton\uff09\u548c\u539f\u578b\uff08Prototype\uff09\u4f5c\u7528\u57df<\/h2>\n

    \u5728\u72ec\u7acb\u7684Spring\u5e94\u7528\u7a0b\u5e8f\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5355\u4f8b\u548c\u539f\u578b\u4f5c\u7528\u57df\u7684Spring Bean\u3002\u8ba9\u6211\u4eec\u770b\u770b\u5982\u4f55\u4f7f\u7528@Scope\u6ce8\u89e3\u8f7b\u677e\u914d\u7f6e\u8fd9\u4e9b\u4f5c\u7528\u57df\u3002\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2aJava Bean\u7c7b\u3002<\/p>\n

    package com.Olivia.spring;\r\n\r\npublic class MyBean {\r\n\r\n    public MyBean() {\r\n        System.out.println(\"MyBean\u5b9e\u4f8b\u5df2\u521b\u5efa\");\r\n    }\r\n\r\n}\r\n<\/code><\/pre>\n
    \u8ba9\u6211\u4eec\u5b9a\u4e49Spring\u914d\u7f6e\u7c7b\uff0c\u5728\u8fd9\u91cc\u6211\u4eec\u5c06\u5b9a\u4e49\u4eceSpring\u5bb9\u5668\u83b7\u53d6 MyBean \u5b9e\u4f8b\u7684\u65b9\u6cd5\u3002<\/p>\n
    package com.Olivia.spring;\r\n\r\nimport org.springframework.context.annotation.Bean;\r\nimport org.springframework.context.annotation.Configuration;\r\nimport org.springframework.context.annotation.Scope;\r\n\r\n@Configuration\r\npublic class MyConfiguration {\r\n    \r\n    @Bean\r\n    @Scope(value=\"singleton\")\r\n    public MyBean myBean() {\r\n        return new MyBean();\r\n    }\r\n    \r\n}\r\n<\/code><\/pre>\n
    \u8bf7\u6ce8\u610f\uff0c\u5355\u4f8b\u662f\u9ed8\u8ba4\u4f5c\u7528\u57df\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u4ece\u4e0a\u9762\u7684Bean\u5b9a\u4e49\u4e2d\u5220\u9664@Scope\uff08value = “singleton”\uff09\u3002\u73b0\u5728\u8ba9\u6211\u4eec\u521b\u5efa\u4e00\u4e2a\u4e3b\u65b9\u6cd5\u5e76\u6d4b\u8bd5\u5355\u4f8b\u4f5c\u7528\u57df\u3002<\/p>\n
    package com.Olivia.spring;\r\n\r\nimport org.springframework.context.annotation.AnnotationConfigApplicationContext;\r\n\r\npublic class MySpringApp {\r\n\r\n    public static void main(String[] args) {\r\n        AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext();\r\n        ctx.register(MyConfiguration.class);\r\n        ctx.refresh();\r\n\r\n        MyBean mb1 = ctx.getBean(MyBean.class);\r\n        System.out.println(mb1.hashCode());\r\n\r\n        MyBean mb2 = ctx.getBean(MyBean.class);\r\n        System.out.println(mb2.hashCode());\r\n\r\n        ctx.close();\r\n    }\r\n\r\n}\r\n<\/code><\/pre>\n
    \u5f53\u6267\u884c\u4e0a\u8ff0\u7a0b\u5e8f\u65f6\uff0c\u6211\u4eec\u5c06\u5f97\u5230\u5982\u4e0b\u8f93\u51fa\u3002<\/p>\n
    MyBean\u5b9e\u4f8b\u5df2\u521b\u5efa\r\n867988177\r\n867988177\r\n<\/code><\/pre>\n
    \u8bf7\u6ce8\u610f\uff0c\u4e24\u4e2aMyBean\u5b9e\u4f8b\u5177\u6709\u76f8\u540c\u7684\u54c8\u5e0c\u7801\uff0c\u5e76\u4e14\u6784\u9020\u51fd\u6570\u53ea\u88ab\u8c03\u7528\u4e00\u6b21\uff0c\u8fd9\u610f\u5473\u7740Spring\u5bb9\u5668\u59cb\u7ec8\u8fd4\u56de\u540c\u4e00\u4e2aMyBean\u5b9e\u4f8b\u3002\u73b0\u5728\u8ba9\u6211\u4eec\u5c06\u4f5c\u7528\u57df\u66f4\u6539\u4e3a\u539f\u578b\u3002<\/p>\n
    @Bean\r\n@Scope(value=\"prototype\")\r\npublic MyBean myBean() {\r\n    return new MyBean();\r\n}\r\n<\/code><\/pre>\n
    \u5f53\u6267\u884c\u4e3b\u65b9\u6cd5\u65f6\uff0c\u8fd9\u6b21\u6211\u4eec\u5c06\u4f1a\u5f97\u5230\u4ee5\u4e0b\u7684\u8f93\u51fa\u7ed3\u679c\u3002<\/p>\n
    MyBean\u5b9e\u4f8b\u5df2\u521b\u5efa\r\n867988177\r\nMyBean\u5b9e\u4f8b\u5df2\u521b\u5efa\r\n443934570\r\n<\/code><\/pre>\n
    \u5f88\u660e\u663e\uff0c\u6bcf\u6b21\u4eceSpring\u5bb9\u5668\u8bf7\u6c42\u65f6\u90fd\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684MyBean\u5b9e\u4f8b\u3002\u73b0\u5728\u8ba9\u6211\u4eec\u5c06\u4f5c\u7528\u57df\u6539\u4e3a\u8bf7\u6c42\u7b49\u7ea7\u3002<\/p>\n
    @Bean\r\n@Scope(value=\"request\")\r\npublic MyBean myBean() {\r\n    return new MyBean();\r\n}\r\n<\/code><\/pre>\n
    \u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u5c06\u5f97\u5230\u4ee5\u4e0b\u5f02\u5e38\u3002<\/p>\n
    Exception in thread \"main\" java.lang.IllegalStateException: No Scope registered for scope name 'request'\r\n    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:347)\r\n    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:224)\r\n    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveNamedBean(DefaultListableBeanFactory.java:1015)\r\n    at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:339)\r\n    at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:334)\r\n    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1107)\r\n    at com.Olivia.spring.MySpringApp.main(MySpringApp.java:12)\r\n<\/code><\/pre>\n
    \u7531\u4e8e\u72ec\u7acb\u5e94\u7528\u7a0b\u5e8f\u4e0d\u652f\u6301\u8bf7\u6c42\u3001\u4f1a\u8bdd\u548c\u5168\u5c40\u4f1a\u8bdd\u8303\u56f4\uff0c\u6240\u4ee5\u624d\u4f1a\u51fa\u73b0\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n
    Spring Bean\u7684\u8bf7\u6c42\u548c\u4f1a\u8bdd\u8303\u56f4<\/h2>\n
    \n    \"spring\n<\/div>\n
    \u8fd9\u662f\u6587\u7ae0\u300aSpring Bean\u8303\u56f4\u300b\u7684\u7b2c2\u90e8\u5206\uff08\u51713\u90e8\u5206\uff09\u3002<\/p>\n
    <?xml version=\"1.0\" encoding=\"UTF-8\"?>\r\n<project xmlns=\"https:\/\/maven.apache.org\/POM\/4.0.0\" xmlns:xsi=\"https:\/\/www.w3.org\/2001\/XMLSchema-instance\"\r\n\txsi:schemaLocation=\"https:\/\/maven.apache.org\/POM\/4.0.0 https:\/\/maven.apache.org\/xsd\/maven-4.0.0.xsd\">\r\n\t<modelVersion>4.0.0<\/modelVersion>\r\n\r\n\t<groupId>com.Olivia.spring<\/groupId>\r\n\t<artifactId>Spring-Boot-MVC<\/artifactId>\r\n\t<version>0.0.1-SNAPSHOT<\/version>\r\n\t<packaging>war<\/packaging>\r\n\r\n\t<name>Spring-Boot-MVC<\/name>\r\n\t<description>Spring Beans Scope MVC<\/description>\r\n\r\n\t<parent>\r\n\t\t<groupId>org.springframework.boot<\/groupId>\r\n\t\t<artifactId>spring-boot-starter-parent<\/artifactId>\r\n\t\t<version>2.0.2.RELEASE<\/version>\r\n\t\t<relativePath\/> <!-- lookup parent from repository -->\r\n\t<\/parent>\r\n\r\n\t<properties>\r\n\t\t<project.build.sourceEncoding>UTF-8<\/project.build.sourceEncoding>\r\n\t\t<project.reporting.outputEncoding>UTF-8<\/project.reporting.outputEncoding>\r\n\t\t<java.version>10<\/java.version>\r\n\t<\/properties>\r\n\r\n\t<dependencies>\r\n\t\t<dependency>\r\n\t\t\t<groupId>org.springframework.boot<\/groupId>\r\n\t\t\t<artifactId>spring-boot-starter-web<\/artifactId>\r\n\t\t<\/dependency>\r\n\r\n\t\t<dependency>\r\n\t\t\t<groupId>org.springframework.boot<\/groupId>\r\n\t\t\t<artifactId>spring-boot-starter-tomcat<\/artifactId>\r\n\t\t\t<scope>provided<\/scope>\r\n\t\t<\/dependency>\r\n\t\t<dependency>\r\n\t\t\t<groupId>org.springframework.boot<\/groupId>\r\n\t\t\t<artifactId>spring-boot-starter-test<\/artifactId>\r\n\t\t\t<scope>test<\/scope>\r\n\t\t<\/dependency>\r\n\t<\/dependencies>\r\n\r\n\t<build>\r\n\t\t<plugins>\r\n\t\t\t<plugin>\r\n\t\t\t\t<groupId>org.springframework.boot<\/groupId>\r\n\t\t\t\t<artifactId>spring-boot-maven-plugin<\/artifactId>\r\n\t\t\t<\/plugin>\r\n\t\t<\/plugins>\r\n\t<\/build>\r\n\r\n\r\n<\/project>\r\n<\/code><\/pre>\n
    \u6211\u4eec\u6765\u521b\u5efa\u4e00\u4e9bSpring\u7ec4\u4ef6\uff0c\u5e76\u5c06\u5b83\u4eec\u914d\u7f6e\u4e3a\u5728Spring\u5bb9\u5668\u4e2d\u4f5c\u4e3a\u8bf7\u6c42\u548c\u4f1a\u8bdd\u8303\u56f4\u7684Spring bean\u3002<\/p>\n
    Spring Bean\u7684\u8bf7\u6c42\u8303\u56f4<\/h3>\n
    package com.Olivia.spring;\r\n\r\nimport org.springframework.context.annotation.Scope;\r\nimport org.springframework.context.annotation.ScopedProxyMode;\r\nimport org.springframework.stereotype.Component;\r\n\r\n@Component\r\n@Scope(value = \"request\", proxyMode = ScopedProxyMode.TARGET_CLASS)\r\npublic class DataRequestScope {\r\n\r\n\tprivate String name = \"Request Scope\";\r\n\t\r\n\tpublic DataRequestScope() {\r\n\t\tSystem.out.println(\"DataRequestScope Constructor Called\");\r\n\t}\r\n\r\n\tpublic String getName() {\r\n\t\treturn name;\r\n\t}\r\n\r\n\tpublic void setName(String name) {\r\n\t\tthis.name = name;\r\n\t}\r\n}\r\n<\/code><\/pre>\n
    Spring Bean\u7684\u4f1a\u8bdd\u8303\u56f4<\/h3>\n
    package com.Olivia.spring;\r\n\r\nimport org.springframework.context.annotation.Scope;\r\nimport java.time.LocalDateTime;\r\nimport org.springframework.context.annotation.ScopedProxyMode;\r\nimport org.springframework.stereotype.Component;\r\n\r\n@Component\r\n@Scope(value = \"session\", proxyMode = ScopedProxyMode.TARGET_CLASS)\r\npublic class DataSessionScope {\r\n\r\n\tprivate String name = \"Session Scope\";\r\n\t\r\n\tpublic DataSessionScope() {\r\n\t\tSystem.out.println(\"DataSessionScope Constructor Called at \"+LocalDateTime.now());\r\n\t}\r\n\r\n\tpublic String getName() {\r\n\t\treturn name;\r\n\t}\r\n\r\n\tpublic void setName(String name) {\r\n\t\tthis.name = name;\r\n\t}\r\n}\r\n<\/code><\/pre>\n
    Spring\u7ec4\u4ef6<\/h3>\n
    \u73b0\u5728\u8ba9\u6211\u4eec\u521b\u5efa\u4e00\u4e2aSpring\u7ec4\u4ef6\uff0c\u5e76\u4f7f\u7528Spring\u81ea\u52a8\u914d\u7f6e\u4e0a\u8ff0\u7684bean\u3002<\/p>\n
    package com.Olivia.spring;\r\n\r\nimport org.springframework.beans.factory.annotation.Autowired;\r\nimport org.springframework.stereotype.Component;\r\n\r\n@Component\r\npublic class Customer {\r\n\r\n\t@Autowired\r\n\tprivate DataRequestScope dataRequestScope;\r\n\t\r\n\t@Autowired\r\n\tprivate DataSessionScope dataSessionScope;\r\n\r\n\tpublic DataRequestScope getDataRequestScope() {\r\n\t\treturn dataRequestScope;\r\n\t}\r\n\r\n\tpublic void setDataRequestScope(DataRequestScope dataRequestScope) {\r\n\t\tthis.dataRequestScope = dataRequestScope;\r\n\t}\r\n\r\n\tpublic DataSessionScope getDataSessionScope() {\r\n\t\treturn dataSessionScope;\r\n\t}\r\n\r\n\tpublic void setDataSessionScope(DataSessionScope dataSessionScope) {\r\n\t\tthis.dataSessionScope = dataSessionScope;\r\n\t}\r\n\r\n\r\n}\r\n<\/code><\/pre>\n
    Spring REST \u63a7\u5236\u5668<\/h3>\n
    \u6700\u540e\uff0c\u8ba9\u6211\u4eec\u521b\u5efa\u4e00\u4e2aRestController\u7c7b\u5e76\u4e3a\u6211\u4eec\u7684\u6d4b\u8bd5\u76ee\u7684\u914d\u7f6e\u4e00\u4e9bAPI\u7ec8\u7aef\u3002<\/p>\n
    package com.Olivia.spring;\r\n\r\nimport org.springframework.beans.factory.annotation.Autowired;\r\nimport org.springframework.web.bind.annotation.RequestMapping;\r\nimport org.springframework.web.bind.annotation.RestController;\r\n\r\n@RestController\r\npublic class HelloData {\r\n\r\n\t@Autowired\r\n\tprivate Customer customer;\r\n\t\r\n\t@RequestMapping(\"\/nameRS\")\r\n\tpublic String helloRS() {\r\n\t\treturn customer.getDataRequestScope().getName();\r\n\t}\r\n\t\r\n\t@RequestMapping(\"\/nameSSUpdated\")\r\n\tpublic String helloSSUpdated() {\r\n\t\tcustomer.getDataSessionScope().setName(\"Session Scope Updated\");\r\n\t\treturn customer.getDataSessionScope().getName();\r\n\t}\r\n\t\r\n\t@RequestMapping(\"\/nameSS\")\r\n\tpublic String helloSS() {\r\n\t\treturn customer.getDataSessionScope().getName();\r\n\t}\r\n}\r\n<\/code><\/pre>\n
    Spring Boot\u4f1a\u8bdd\u8d85\u65f6\u914d\u7f6e<\/p>\n
    \u6700\u540e\uff0c\u6211\u4eec\u9700\u8981\u914d\u7f6e Spring Boot \u4f1a\u8bdd\u8d85\u65f6\u53d8\u91cf\uff0c\u5728 src\/main\/resources\/application.properties \u6587\u4ef6\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u5c5e\u6027\u3002<\/p>\n
    server.session.cookie.max-age= 1\r\nserver.session.timeout= 1\r\n<\/code><\/pre>\n
    \u73b0\u5728\u6211\u4eec\u7684\u4f1a\u8bdd\u8303\u56f4\u7684Spring bean\u5c06\u5728\u4e00\u5206\u949f\u5185\u5931\u6548\u3002\u53ea\u9700\u5c06SpringBootMvcApplication\u7c7b\u4f5c\u4e3aspring boot\u5e94\u7528\u7a0b\u5e8f\u8fd0\u884c\u3002\u60a8\u5e94\u8be5\u770b\u5230\u6211\u4eec\u7684\u7aef\u70b9\u914d\u7f6e\u7684\u4ee5\u4e0b\u8f93\u51fa\u3002<\/p>\n
    2018-05-23 17:02:25.830  INFO 6921 --- [main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped \"{[\/nameRS]}\" onto public java.lang.String com.Olivia.spring.HelloData.helloRS()\r\n2018-05-23 17:02:25.831  INFO 6921 --- [main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped \"{[\/nameSSUpdated]}\" onto public java.lang.String com.Olivia.spring.HelloData.helloSSUpdated()\r\n2018-05-23 17:02:25.832  INFO 6921 --- [main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped \"{[\/nameSS]}\" onto public java.lang.String com.Olivia.spring.HelloData.helloSS()\r\n<\/code><\/pre>\n
    SpringBean\u8bf7\u6c42\u8303\u56f4\u6d4b\u8bd5<\/p>\n
    \u5728\u4efb\u4f55\u6d4f\u89c8\u5668\u4e2d\u6253\u5f00\uff0c\u5e76\u8f93\u5165\u7f51\u5740https:\/\/localhost:8080\/nameRS\uff0c\u7136\u540e\u67e5\u770b\u63a7\u5236\u53f0\u8f93\u51fa\u3002\u60a8\u5e94\u8be5\u80fd\u770b\u5230\u5728\u6bcf\u4e2a\u8bf7\u6c42\u4e0a\u90fd\u4f1a\u6253\u5370\u51fa\u201cDataRequestScope\u6784\u9020\u5668\u5df2\u8c03\u7528\u201d\u3002<\/p>\n
    Spring\u8c46\u5b50\u4f1a\u8bdd\u8303\u56f4\u6d4b\u8bd5<\/p>\n
    \n                            \"spring<\/p>\n","protected":false},"excerpt":{"rendered":"
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