{"id":2603,"date":"2023-07-05T14:08:37","date_gmt":"2023-07-05T06:08:37","guid":{"rendered":"https:\/\/xinchewhd.com.cn\/?p=2603"},"modified":"2023-07-05T14:08:41","modified_gmt":"2023-07-05T06:08:41","slug":"springboot-bean%e8%87%aa%e5%8a%a8%e8%a3%85%e9%85%8d%e5%8e%9f%e7%90%86%ef%bc%8c%e8%bf%99%e4%b8%80%e7%af%87%e5%b0%b1%e5%a4%9f%e4%ba%86%ef%bc%81","status":"publish","type":"post","link":"https:\/\/xinchewhd.com.cn\/index.php\/spring-boot\/springboot-bean%e8%87%aa%e5%8a%a8%e8%a3%85%e9%85%8d%e5%8e%9f%e7%90%86%ef%bc%8c%e8%bf%99%e4%b8%80%e7%af%87%e5%b0%b1%e5%a4%9f%e4%ba%86%ef%bc%81\/","title":{"rendered":"SpringBoot bean\u81ea\u52a8\u88c5\u914d\u539f\u7406\uff0c\u8fd9\u4e00\u7bc7\u5c31\u591f\u4e86\uff01"},"content":{"rendered":"
\n
<\/section>\n
\n
\n

\n

\n

\u524d\u8a00<\/span><\/h2>\n

\u5b66\u4e60SpringBoot\uff0c\u7edd\u5bf9\u907f\u4e0d\u5f00\u81ea\u52a8\u88c5\u914d\u8fd9\u4e2a\u6982\u5ff5\uff0c\u8fd9\u4e5f\u662fSpringBoot\u7684\u5173\u952e\u4e4b\u4e00<\/p>\n

\u672c\u4eba\u4e5f\u662fSpringBoot\u7684\u521d\u5b66\u8005\uff0c\u4e0b\u9762\u7684\u4e00\u4e9b\u603b\u7ed3\u90fd\u662f\u7ed3\u5408\u4e2a\u4eba\u7406\u89e3\u548c\u5b9e\u8df5\u5f97\u51fa\u7684\uff0c\u5982\u679c\u6709\u9519\u8bef\u6216\u8005\u758f\u6f0f\uff0c\u8bf7\u4e00\u5b9a\u4e00\u5b9a\u4e00\u5b9a\uff08\u4e0d\u662f\u6b22\u8fce\uff0c\u662f\u4e00\u5b9a\uff09\u5e2e\u6211\u6307\u51fa\uff0c\u5728\u8bc4\u8bba\u533a\u56de\u590d\u5373\u53ef\uff0c\u4e00\u8d77\u5b66\u4e60\uff01<\/p>\n

\u7bc7\u5e45\u8f83\u957f\uff0c\u5e0c\u671b\u4f60\u53ef\u4ee5\u6709\u8010\u5fc3.<\/p>\n

\u5982\u679c\u53ea\u5173\u5fc3SpringBoot\u88c5\u914d\u8fc7\u7a0b\uff0c\u53ef\u4ee5\u76f4\u63a5\u8df3\u5230\u7b2c7\u90e8\u5206<\/strong><\/p>\n

\u60f3\u8981\u7406\u89e3spring\u81ea\u52a8\u88c5\u914d\uff0c\u9700\u8981\u660e\u786e\u4e24\u4e2a\u542b\u4e49\uff1a<\/p>\n

    \n
  • \n
    \n

    \u88c5\u914d\uff0c\u88c5\u914d\u4ec0\u4e48\uff1f<\/p>\n<\/section>\n<\/li>\n

  • \n
    \n

    \u81ea\u52a8\uff0c\u600e\u4e48\u81ea\u52a8\uff1f<\/p>\n<\/section>\n<\/li>\n<\/ul>\n

    1. Warm up<\/span><\/h2>\n

    \u5728\u5f00\u59cb\u4e4b\u524d\uff0c\u8ba9\u6211\u4eec\u5148\u6765\u770b\u70b9\u7b80\u5355\u7684\u5f00\u80c3\u83dc\uff1aspring\u4e2dbean\u6ce8\u5165\u7684\u4e09\u79cd\u5f62\u5f0f<\/p>\n

    \u9996\u5148\u6211\u4eec\u5148\u6765\u4e00\u4e2aPerson\u7c7b\uff0c\u8fd9\u91cc\u4e3a\u4e86\u7bc7\u5e45\u957f\u5ea6\u8003\u8651\u4f7f\u7528\u4e86lombok<\/p>\n

    \u5982\u679c\u4f60\u4e0d\u77e5\u9053lombok\u662f\u4ec0\u4e48\uff0c\u90a3\u5c31\u6700\u597d\u4e0d\u8981\u77e5\u9053\uff0c\u52a0\u4e86\u51e0\u4e2a\u6ce8\u89e3\u4e4b\u540e\u6211\u7684pojo\u7c7bPerson\u5c31\u5b8c\u6210\u4e86<\/p>\n

    \/**
    \u00a0*\u00a0@author\u00a0dzzhyk
    \u00a0*\/
    @Data
    @NoArgsConstructor
    @AllArgsConstructor
    public\u00a0class\u00a0Person\u00a0{
    \u00a0\u00a0\u00a0\u00a0private\u00a0String\u00a0name;
    \u00a0\u00a0\u00a0\u00a0private\u00a0Integer\u00a0age;
    \u00a0\u00a0\u00a0\u00a0private\u00a0Boolean\u00a0sex;
    }
    <\/code><\/pre>\n
    \u5728Spring\u4e2d\uff08\u4e0d\u662fSpring Boot\uff09\uff0c\u8981\u5b9e\u73b0bean\u7684\u6ce8\u5165\uff0c\u6211\u4eec\u67093\u79cd\u6ce8\u5165\u65b9\u5f0f\uff1a<\/p>\n
    1.1 setter\u6ce8\u5165<\/h3>\n
    \u8fd9\u662f\u6700\u57fa\u672c\u7684\u6ce8\u5165\u65b9\u5f0f<\/p>\n
    \u9996\u5148\u6211\u4eec\u521b\u5efaapplicationContext.xml\u6587\u4ef6\uff0c\u5728\u91cc\u9762\u52a0\u5165\uff1a<\/p>\n
    <!--\u00a0\u624b\u52a8\u914d\u7f6ebean\u5bf9\u8c61\u00a0-->
    <bean\u00a0id=\"person\"<\/span>\u00a0class=\"pojo.Person\"<\/span>>
    \u00a0\u00a0\u00a0\u00a0<property\u00a0name=\"name\"<\/span>\u00a0value=\"dzzhyk\"<\/span>\/>
    \u00a0\u00a0\u00a0\u00a0<property\u00a0name=\"age\"<\/span>\u00a0value=\"20\"<\/span>\/>
    \u00a0\u00a0\u00a0\u00a0<property\u00a0name=\"sex\"<\/span>\u00a0value=\"true\"<\/span>\/>
    <\/bean>
    <\/code><\/pre>\n
    \u8fd9\u91cc\u4f7f\u7528property\u4e3abean\u5bf9\u8c61\u8d4b\u503c<\/p>\n
    \u7d27\u63a5\u7740\u6211\u4eec\u4f1a\u5728test\u5305\u4e0b\u5199\u4e00\u4e2aversion1.TestVersion1\u7c7b<\/p>\n
    \/**
    \u00a0*\u00a0\u7b2c\u4e00\u79cdbean\u6ce8\u5165\u5b9e\u73b0\u65b9\u5f0f\u00a0-\u00a0\u5728xml\u6587\u4ef6\u4e2d\u76f4\u63a5\u914d\u7f6e\u5c5e\u6027
    \u00a0*\/
    public\u00a0class\u00a0TestVersion1\u00a0{
    \u00a0\u00a0\u00a0\u00a0@Test
    \u00a0\u00a0\u00a0\u00a0public\u00a0void\u00a0test<\/span><\/span>(){
    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ApplicationContext\u00a0ca\u00a0=\u00a0new\u00a0\u00a0\u00a0ClassPathXmlApplicationContext(\"applicationContext.xml\"<\/span>);
    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Person\u00a0person\u00a0=\u00a0ca.getBean(\"person\"<\/span>,\u00a0Person.class);
    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0System.out.println(person);
    \u00a0\u00a0\u00a0\u00a0}
    }
    <\/code><\/pre>\n
    \u8fd9\u91cc\u6211\u4f7f\u7528\u4e86ClassPathXmlApplicationContext\u6765\u52a0\u8f7dspring\u914d\u7f6e\u6587\u4ef6\u5e76\u4e14\u8bfb\u53d6\u5176\u4e2d\u5b9a\u4e49\u7684bean\uff0c\u7136\u540e\u4f7f\u7528getBean\u65b9\u6cd5\u4f7f\u7528id\u548c\u7c7b\u6765\u83b7\u53d6\u8fd9\u4e2aPerson\u7684Bean\u5bf9\u8c61\uff0c\u7ed3\u679c\u6210\u529f\u8f93\u51fa\uff1a<\/p>\n
    Person(name=dzzhyk,\u00a0age=20,\u00a0sex=true<\/span>)
    <\/code><\/pre>\n
    1.2 \u6784\u9020\u5668\u6ce8\u5165<\/h3>\n
    \u63a5\u4e0b\u6765\u662f\u4f7f\u7528\u6784\u9020\u5668\u6ce8\u5165\uff0c\u6211\u4eec\u9700\u8981\u66f4\u6539applicationContext.xml\u6587\u4ef6\u4e2d\u7684property\u4e3aconstruct-arg<\/p>\n
    <!--\u00a0\u4f7f\u7528\u6784\u9020\u5668\u00a0-->
    <bean\u00a0id=\"person\"<\/span>\u00a0class=\"pojo.Person\"<\/span>>
    \u00a0\u00a0\u00a0\u00a0<constructor-arg\u00a0index=\"0\"<\/span>\u00a0type<\/span>=\"java.lang.String\"<\/span>\u00a0value=\"dzzhyk\"<\/span>\u00a0\/>
    \u00a0\u00a0\u00a0\u00a0<constructor-arg\u00a0index=\"1\"<\/span>\u00a0type<\/span>=\"java.lang.Integer\"<\/span>\u00a0value=\"20\"<\/span>\/>
    \u00a0\u00a0\u00a0\u00a0<constructor-arg\u00a0index=\"2\"<\/span>\u00a0type<\/span>=\"java.lang.Boolean\"<\/span>\u00a0value=\"true\"<\/span>\/>
    <\/bean>
    <\/code><\/pre>\n
    version2.TestVersion2\u5185\u5bb9\u4e0d\u53d8\uff1a<\/p>\n
    public\u00a0class\u00a0TestVersion2\u00a0{
    \u00a0\u00a0\u00a0\u00a0@Test
    \u00a0\u00a0\u00a0\u00a0public\u00a0void\u00a0test<\/span><\/span>(){
    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ApplicationContext\u00a0ca\u00a0=\u00a0new\u00a0ClassPathXmlApplicationContext(\"applicationContext.xml\"<\/span>);
    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Person\u00a0person\u00a0=\u00a0ca.getBean(\"person\"<\/span>,\u00a0Person.class);
    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0System.out.println(person);
    \u00a0\u00a0\u00a0\u00a0}
    }
    <\/code><\/pre>\n
    \u4f9d\u7136\u6b63\u5e38\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n
    Person(name=dzzhyk,\u00a0age=20,\u00a0sex=true<\/span>)
    <\/code><\/pre>\n
    1.3 \u5c5e\u6027\u6ce8\u5165<\/h3>\n
    \u4f7f\u7528\u6ce8\u89e3\u65b9\u5f0f\u7684\u5c5e\u6027\u6ce8\u5165Bean\u662f\u6bd4\u8f83\u4f18\u96c5\u7684\u505a\u6cd5<\/p>\n
    \u9996\u5148\u6211\u4eec\u9700\u8981\u5728applicationContext.xml\u4e2d\u5f00\u542f\u6ce8\u89e3\u652f\u6301\u548c\u81ea\u52a8\u5305\u626b\u63cf\uff1a<\/p>\n
    <context:annotation-config\u00a0\/>
    <context:component-scan\u00a0base-package=\"pojo\"<\/span>\/>
    <\/code><\/pre>\n
    \u5728pojo\u7c7b\u4e2d\u5bf9Person\u7c7b\u52a0\u4e0a@Component\u6ce8\u89e3\uff0c\u5c06\u5176\u6807\u8bb0\u4e3a\u7ec4\u4ef6\uff0c\u5e76\u4e14\u4f7f\u7528@Value\u6ce8\u89e3\u4e3a\u5404\u5c5e\u6027\u8d4b\u521d\u503c<\/p>\n
    @Component
    public\u00a0class\u00a0Person\u00a0{
    \u00a0\u00a0\u00a0\u00a0
    \u00a0\u00a0\u00a0\u00a0@Value(\"dzzhyk\"<\/span>)
    \u00a0\u00a0\u00a0\u00a0private\u00a0String\u00a0name;
    \u00a0\u00a0\u00a0\u00a0@Value(\"20\"<\/span>)
    \u00a0\u00a0\u00a0\u00a0private\u00a0Integer\u00a0age;
    \u00a0\u00a0\u00a0\u00a0@Value(\"true\"<\/span>)
    \u00a0\u00a0\u00a0\u00a0private\u00a0Boolean\u00a0sex;
    }
    <\/code><\/pre>\n
    \u7136\u540e\u6dfb\u52a0\u65b0\u7684\u6d4b\u8bd5\u7c7bversion3.TestVersion3<\/p>\n
    public\u00a0class\u00a0TestVersion3\u00a0{
    \u00a0\u00a0\u00a0\u00a0@Test
    \u00a0\u00a0\u00a0\u00a0public\u00a0void\u00a0test<\/span><\/span>(){
    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ApplicationContext\u00a0ac\u00a0=\u00a0new\u00a0ClassPathXmlApplicationContext(\"applicationContext.xml\"<\/span>);
    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Person\u00a0person\u00a0=\u00a0ac.getBean(\"person\"<\/span>,\u00a0Person.class);
    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0System.out.println(person);
    \u00a0\u00a0\u00a0\u00a0}
    }
    <\/code><\/pre>\n
    \u8fd0\u884c\u4e5f\u53ef\u4ee5\u5f97\u5230\u5982\u4e0b\u7ed3\u679c\uff1a<\/p>\n
    Person(name=dzzhyk,\u00a0age=20,\u00a0sex=true<\/span>)
    <\/code><\/pre>\n
    2. Warm up again<\/span><\/h2>\n
    \u4ec0\u4e48\uff1f\u8fd8\u6709\u4ec0\u4e48\uff1f\u63a5\u4e0b\u6765\u6211\u4eec\u6765\u804a\u804aSpring\u7684\u4e24\u79cd\u914d\u7f6e\u65b9\u5f0f\uff1a\u57fa\u4e8eXML\u7684\u914d\u7f6e\u548c\u57fa\u4e8eJavaConfig\u7c7b\u7684\u914d\u7f6e\u65b9\u5f0f\uff0c\u8fd9\u5bf9\u4e8e\u7406\u89e3SpringBoot\u7684\u81ea\u52a8\u88c5\u914d\u539f\u7406\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n
    \u9996\u5148\u6211\u4eec\u5728Person\u7684\u57fa\u7840\u4e0a\u518d\u521b\u5efa\u51e0\u4e2apojo\u7c7b\uff1a\u8fd9\u4e2aPerson\u6709Car\u3001\u6709Dog<\/p>\n
    public\u00a0class\u00a0Car\u00a0{
    \u00a0\u00a0\u00a0\u00a0private\u00a0String\u00a0brand;
    \u00a0\u00a0\u00a0\u00a0private\u00a0Integer\u00a0price;
    }

    public\u00a0class\u00a0Dog\u00a0{
    \u00a0\u00a0\u00a0\u00a0private\u00a0String\u00a0name;
    \u00a0\u00a0\u00a0\u00a0private\u00a0Integer\u00a0age;
    }

    public\u00a0class\u00a0Person\u00a0{
    \u00a0\u00a0\u00a0\u00a0private\u00a0String\u00a0name;
    \u00a0\u00a0\u00a0\u00a0private\u00a0Integer\u00a0age;
    \u00a0\u00a0\u00a0\u00a0private\u00a0Boolean\u00a0sex;
    \u00a0\u00a0\u00a0\u00a0private\u00a0Dog\u00a0dog;
    \u00a0\u00a0\u00a0\u00a0private\u00a0Car\u00a0car;
    }
    <\/code><\/pre>\n
    2.1 \u57fa\u4e8eXML\u7684\u914d\u7f6e<\/h3>\n
    \u63a5\u4e0b\u6765\u8ba9\u6211\u4eec\u5c1d\u8bd5\u4f7f\u7528XML\u7684\u914d\u7f6e\u65b9\u5f0f\u6765\u4e3a\u4e00\u4e2aPerson\u6ce8\u5165<\/p>\n
    <bean\u00a0id=\"person\"<\/span>\u00a0class=\"pojo.Person\"<\/span>>
    \u00a0\u00a0\u00a0\u00a0<property\u00a0name=\"name\"<\/span>\u00a0value=\"dzzhyk\"<\/span>\/>
    \u00a0\u00a0\u00a0\u00a0<property\u00a0name=\"age\"<\/span>\u00a0value=\"20\"<\/span>\/>
    \u00a0\u00a0\u00a0\u00a0<property\u00a0name=\"sex\"<\/span>\u00a0value=\"true\"<\/span>\/>
    \u00a0\u00a0\u00a0\u00a0<property\u00a0name=\"dog\"<\/span>\u00a0ref=\"dog\"<\/span>\/>
    \u00a0\u00a0\u00a0\u00a0<property\u00a0name=\"car\"<\/span>\u00a0ref=\"car\"<\/span>\/>
    <\/bean>

    <bean\u00a0id=\"dog\"<\/span>\u00a0class=\"pojo.Dog\"<\/span>>
    \u00a0\u00a0\u00a0\u00a0<property\u00a0name=\"name\"<\/span>\u00a0value=\"\u65fa\u8d22\"<\/span>\/>
    \u00a0\u00a0\u00a0\u00a0<property\u00a0name=\"age\"<\/span>\u00a0value=\"5\"<\/span>\u00a0\/>
    <\/bean>

    <bean\u00a0id=\"car\"<\/span>\u00a0class=\"pojo.Car\"<\/span>>
    \u00a0\u00a0\u00a0\u00a0<property\u00a0name=\"brand\"<\/span>\u00a0value=\"\u5965\u8fea\u53cc\u94bb\"<\/span>\/>
    \u00a0\u00a0\u00a0\u00a0<property\u00a0name=\"price\"<\/span>\u00a0value=\"100000\"<\/span>\/>
    <\/bean>
    <\/code><\/pre>\n
    \u7136\u540e\u8ddf\u666e\u901a\u7684Bean\u6ce8\u5165\u4e00\u6837\uff0c\u4f7f\u7528ClassPathXmlApplicationContext\u6765\u52a0\u8f7d\u914d\u7f6e\u6587\u4ef6\uff0c\u7136\u540e\u83b7\u53d6Bean<\/p>\n
    \/**
    \u00a0*\u00a0\u4f7f\u7528XML\u914d\u7f6e
    \u00a0*\/
    public\u00a0class\u00a0TestVersion1\u00a0{
    \u00a0\u00a0\u00a0\u00a0@Test
    \u00a0\u00a0\u00a0\u00a0public\u00a0void\u00a0test<\/span><\/span>(){
    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ClassPathXmlApplicationContext\u00a0ca\u00a0=\u00a0new\u00a0ClassPathXmlApplicationContext(\"applicationContext.xml\"<\/span>);
    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Person\u00a0person\u00a0=\u00a0ca.getBean(\"person\"<\/span>,\u00a0Person.class);
    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0System.out.println(person);
    \u00a0\u00a0\u00a0\u00a0}
    }
    <\/code><\/pre>\n
    \u8f93\u51fa\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n
    Person(name=dzzhyk,\u00a0age=20,\u00a0sex=true<\/span>,\u00a0dog=Dog(name=\u65fa\u8d22,\u00a0age=5),\u00a0car=Car(brand=\u5965\u8fea\u53cc\u94bb,\u00a0price=100000))
    <\/code><\/pre>\n
    2.2 \u57fa\u4e8eJavaConfig\u7c7b\u7684\u914d\u7f6e<\/h3>\n
    \u60f3\u8981\u6210\u4e3aJavaConfig\u7c7b\uff0c\u9700\u8981\u4f7f\u7528@Configuration\u6ce8\u89e3<\/p>\n
    \u6211\u4eec\u65b0\u5efa\u4e00\u4e2a\u5305\u547d\u540d\u4e3aconfig\uff0c\u5728config\u4e2d\u65b0\u589e\u4e00\u4e2aPersonConfig\u7c7b<\/p>\n
    @Configuration
    @ComponentScan
    public\u00a0class\u00a0PersonConfig\u00a0{

    \u00a0\u00a0\u00a0\u00a0@Bean
    \u00a0\u00a0\u00a0\u00a0public\u00a0Person\u00a0person(Dog\u00a0dog,\u00a0Car\u00a0car){
    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return<\/span>\u00a0new\u00a0Person(\"dzzhyk\"<\/span>,\u00a020,\u00a0true<\/span>,\u00a0dog,\u00a0car);
    \u00a0\u00a0\u00a0\u00a0}

    \u00a0\u00a0\u00a0\u00a0@Bean
    \u00a0\u00a0\u00a0\u00a0public\u00a0Dog\u00a0dog<\/span><\/span>(){
    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return<\/span>\u00a0new\u00a0Dog(\"\u65fa\u8d22\"<\/span>,\u00a05);
    \u00a0\u00a0\u00a0\u00a0}

    \u00a0\u00a0\u00a0\u00a0@Bean
    \u00a0\u00a0\u00a0\u00a0public\u00a0Car\u00a0car<\/span><\/span>(){
    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return<\/span>\u00a0new\u00a0Car(\"\u5965\u8fea\u53cc\u94bb\"<\/span>,\u00a0100000);
    \u00a0\u00a0\u00a0\u00a0}
    }
    <\/code><\/pre>\n
    \u6b64\u65f6\u6211\u4eec\u7684XML\u914d\u7f6e\u6587\u4ef6\u53ef\u4ee5\u5b8c\u5168\u4e3a\u7a7a\u4e86\uff0c\u6b64\u65f6\u5e94\u8be5\u4f7f\u7528AnnotationConfigApplicationContext\u6765\u83b7\u53d6\u6ce8\u89e3\u914d\u7f6e<\/p>\n
    \/**
    \u00a0*\u00a0\u4f7f\u7528JavaConfig\u914d\u7f6e
    \u00a0*\/
    public\u00a0class\u00a0TestVersion2\u00a0{
    \u00a0\u00a0\u00a0\u00a0@Test
    \u00a0\u00a0\u00a0\u00a0public\u00a0void\u00a0test<\/span><\/span>(){
    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0AnnotationConfigApplicationContext\u00a0ac\u00a0=\u00a0new\u00a0AnnotationConfigApplicationContext(PersonConfig.class);
    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Person\u00a0person\u00a0=\u00a0ac.getBean(\"person\"<\/span>,\u00a0Person.class);
    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0System.out.println(person);
    \u00a0\u00a0\u00a0\u00a0}
    }
    <\/code><\/pre>\n
    \u4ecd\u7136\u6b63\u5e38\u8f93\u51fa\u4e86\u7ed3\u679c\uff1a<\/p>\n
    Person(name=dzzhyk,\u00a0age=20,\u00a0sex=true<\/span>,\u00a0dog=Dog(name=\u65fa\u8d22,\u00a0age=5),\u00a0car=Car(brand=\u5965\u8fea\u53cc\u94bb,\u00a0price=100000))
    <\/code><\/pre>\n
    3. BeanDefinition<\/span><\/h2>\n
    AbstractBeanDefinition
    <\/code><\/pre>\n
    \u662fspring\u4e2d\u6240\u6709bean\u7684\u62bd\u8c61\u5b9a\u4e49\u5bf9\u8c61\uff0c\u6211\u628a\u4ed6\u53eb\u505abean\u5b9a\u4e49<\/p>\n
    \u5f53bean.class\u88abJVM\u7c7b\u52a0\u8f7d\u5230\u5185\u5b58\u4e2d\u65f6\uff0c\u4f1a\u88abspring\u626b\u63cf\u5230\u4e00\u4e2amap\u5bb9\u5668\u4e2d\uff1a<\/p>\n
    BeanDefinitionMap<beanName,\u00a0BeanDefinition>
    <\/code><\/pre>\n
    \u8fd9\u4e2a\u5bb9\u5668\u5b58\u50a8\u4e86bean\u5b9a\u4e49\uff0c\u4f46\u662fbean\u6b64\u65f6\u8fd8\u6ca1\u6709\u8fdb\u884c\u5b9e\u4f8b\u5316\uff0c\u5728\u8fdb\u884c\u5b9e\u4f8b\u5316\u4e4b\u524d\uff0c\u8fd8\u6709\u4e00\u4e2a<\/p>\n
    BeanFactoryPostProcessor
    <\/code><\/pre>\n
    \u53ef\u4ee5\u5bf9bean\u5bf9\u8c61\u8fdb\u884c\u4e00\u4e9b\u81ea\u5b9a\u4e49\u5904\u7406<\/p>\n
    \u6211\u4eec\u6253\u5f00BeanFactoryProcessor\u8fd9\u4e2a\u63a5\u53e3\u7684\u6e90\u7801\u53ef\u4ee5\u53d1\u73b0\u5982\u4e0b\u5185\u5bb9\uff1a<\/p>\n
    \/*
    *\u00a0Modify\u00a0the\u00a0application\u00a0context's\u00a0internal\u00a0bean\u00a0factory\u00a0after\u00a0its\u00a0standard
    *\u00a0initialization.\u00a0All\u00a0bean\u00a0definitions\u00a0will\u00a0have\u00a0been\u00a0loaded,\u00a0but\u00a0no\u00a0beans
    *\u00a0will\u00a0have\u00a0been\u00a0instantiated\u00a0yet.\u00a0This\u00a0allows\u00a0for\u00a0overriding\u00a0or\u00a0adding
    *\u00a0properties\u00a0even\u00a0to\u00a0eager-initializing\u00a0beans.
    *\/
    <\/span><\/code><\/pre>\n
    \u5728spring\u5b8c\u6210\u6807\u51c6\u7684\u521d\u59cb\u5316\u8fc7\u7a0b\u540e\uff0c\u5b9e\u73b0BeanFactoryPostProcessor\u63a5\u53e3\u7684\u5bf9\u8c61\u53ef\u4ee5\u7528\u4e8e\u5b9a\u5236bean factory\uff0c\u6240\u6709\u7684bean definition\u90fd\u4f1a\u88ab\u52a0\u8f7d\uff0c\u4f46\u662f\u6b64\u65f6\u8fd8\u6ca1\u6709\u88ab\u5b9e\u4f8b\u5316\u3002\u8fd9\u4e2a\u63a5\u53e3\u5141\u8bb8\u5bf9\u4e00\u4e9bbean\u5b9a\u4e49\u505a\u51fa\u5c5e\u6027\u4e0a\u7684\u6539\u52a8\u3002<\/p>\n
    \u7b80\u8a00\u4e4b\u5c31\u662f\u5b9e\u73b0\u4e86BeanFactoryPostProcessor\u8fd9\u4e2a\u63a5\u53e3\u7684\u7c7b\uff0c\u53ef\u4ee5\u5728bean\u5b9e\u4f8b\u5316\u4e4b\u524d\u5b8c\u6210\u4e00\u4e9b\u5bf9bean\u7684\u6539\u52a8\u3002<\/p>\n
    \u5927\u81f4\u6d41\u7a0b\u6211\u753b\u4e86\u4e2a\u56fe\uff1a<\/p>\n