{"id":374,"date":"2021-01-12T18:15:44","date_gmt":"2021-01-12T10:15:44","guid":{"rendered":"http:\/\/www.softeng.cn\/?p=374"},"modified":"2021-01-12T18:15:44","modified_gmt":"2021-01-12T10:15:44","slug":"%e3%80%8ab%e7%ab%99-spring%e6%ba%90%e7%a0%81%e8%a7%a3%e6%9e%90%e3%80%8b%e5%ad%a6%e4%b9%a0%e7%ac%94%e8%ae%b0%ef%bc%88%e5%9b%9b%ef%bc%89-%e8%87%aa%e5%8a%a8%e8%a3%85%e9%85%8d","status":"publish","type":"post","link":"https:\/\/www.softeng.cn\/?p=374","title":{"rendered":"\u300aB\u7ad9-Spring\u6e90\u7801\u89e3\u6790\u300b\u5b66\u4e60\u7b14\u8bb0\uff08\u56db\uff09\u2014\u2014\u81ea\u52a8\u88c5\u914d"},"content":{"rendered":"

\u89c6\u9891\u5730\u5740\uff1ahttps:\/\/www.bilibili.com\/video\/BV1oW41167AV<\/a>
\n\u5bf9\u5e94\u4ee3\u7801Git\u5e93\u5730\u5740\uff1ahttps:\/\/github.com\/whh306318848\/spring-annotation.git<\/a><\/p>\n

    \n
  1. \u81ea\u52a8\u88c5\u914d\uff1aSpring\u5229\u7528\u4f9d\u8d56\u6ce8\u5165\uff08DI\uff09\uff0c\u5b8c\u6210\u5bf9IOC\u5bb9\u5668\u4e2d\u5404\u4e2a\u7ec4\u4ef6\u7684\u4f9d\u8d56\u5173\u7cfb\u8d4b\u503c<\/li>\n
  2. \u4f7f\u7528@Autowired\u6ce8\u89e3\u81ea\u52a8\u6ce8\u5165
    \n2.1. \u9ed8\u8ba4\u4f18\u5148\u6309\u7167\u7c7b\u578b\u53bb\u5bb9\u5668\u4e2d\u627e\u5bf9\u5e94\u7684\u7ec4\u4ef6\uff0c\u4f7f\u7528applicationContext.getBean(BookDao.class);
    \n2.2. \u5982\u679c\u627e\u5230\u76f8\u540c\u7c7b\u578b\u7684\u7ec4\u4ef6\uff0c\u518d\u5c06\u5c5e\u6027\u7684\u540d\u79f0\u4f5c\u4e3a\u7ec4\u4ef6\u7684id\u53bb\u5bb9\u5668\u4e2d\u67e5\u627eapplicationContext.getBean(“bookDao”)
    \n2.3. \u5728\u88ab\u88c5\u914d\u7684\u53d8\u91cf\u4e0a\uff08\u5373\u4f7f\u7528@Autowired\u6ce8\u89e3\u7684\u5730\u65b9\uff09\uff0c\u4f7f\u7528@Qualifier\u6ce8\u89e3\u6307\u5b9a\u8981\u88c5\u914d\u7684\u7ec4\u4ef6\u7684id\uff0c\u800c\u4e0d\u662f\u4f7f\u7528\u5c5e\u6027\u540d
    \n2.4. \u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u4e00\u5b9a\u8981\u5c06\u5c5e\u6027\u8d4b\u503c\u597d\uff0c\u5982\u679c\u6ca1\u6709\u627e\u5230\u5c31\u4f1a\u62a5\u9519\uff0c\u4f46\u4e5f\u53ef\u4ee5\u4f7f\u7528@Autowired(required = false)\u8bbe\u7f6e\u81ea\u52a8\u88c5\u914d\u662f\u975e\u5fc5\u987b\u7684\uff0c\u80fd\u88c5\u914d\u5219\u88c5\u914d\uff0c\u5982\u679c\u627e\u4e0d\u5230\u5c31\u4e0d\u88c5\u914d
    \n2.5. \u5728\u7ec4\u4ef6\u4e0a\uff08\u5373\u7ec4\u4ef6\u6ce8\u518c\u7684\u5730\u65b9\uff0c\u5982@Bean\u3001@Service\u7b49\u6ce8\u89e3\u4e0a\uff09\uff0c\u4f7f\u7528@Primary\u6ce8\u89e3\uff0c\u8ba9Spring\u8fdb\u884c\u81ea\u52a8\u88c5\u914d\u7684\u65f6\u5019\uff0c\u9ed8\u8ba4\u4f7f\u7528\u9996\u9009\u7684Bean<\/li>\n<\/ol>\n
    \/\/ \u6ce8\u5165\u7684Bean\uff0c\u540d\u5b57\u9ed8\u8ba4\u662f\u9996\u5b57\u6bcd\u5c0f\u5199\n@Repository\npublic class BookDao {\n\n    private String lable = \"1\";\n\n    public String getLable() {\n        return lable;\n    }\n\n    public void setLable(String lable) {\n        this.lable = lable;\n    }\n\n    @Override\n    public String toString() {\n        return \"BookDao{\" +\n                \"lable='\" + lable + '\\'' +\n                '}';\n    }\n}\n<\/code><\/pre>\n
    @Service\npublic class BookService {\n\n    @Qualifier(\"bookDao\")\n    @Autowired(required = false)\n    private BookDao bookDao;\n\n    public void print() {\n        System.out.println(this.bookDao);\n    }\n\n    @Override\n    public String toString() {\n        return \"BookService{\" +\n                \"bookDao=\" + bookDao +\n                '}';\n    }\n}\n<\/code><\/pre>\n
    \/**\n * @author: wuhaohua\n * @date: Created in 2021\/1\/5 17:22\n * @description: \u81ea\u52a8\u88c5\u914d\u914d\u7f6e\u7c7b\n * \u81ea\u52a8\u88c5\u914d\uff1a\n * Spring\u5229\u7528\u4f9d\u8d56\u6ce8\u5165\uff08DI\uff09\uff0c\u5b8c\u6210\u5bf9IOC\u5bb9\u5668\u4e2d\u5404\u4e2a\u7ec4\u4ef6\u7684\u4f9d\u8d56\u5173\u7cfb\u8d4b\u503c\uff1b\n * 1)\u3001\u4f7f\u7528@Autowired\u6ce8\u89e3\u81ea\u52a8\u6ce8\u5165\uff0c\u5176\u539f\u7406\u662f\uff1a\n *      a.\u9ed8\u8ba4\u4f18\u5148\u6309\u7167\u7c7b\u578b\u53bb\u5bb9\u5668\u4e2d\u627e\u5bf9\u5e94\u7684\u7ec4\u4ef6\uff0c\u4f7f\u7528applicationContext.getBean(BookDao.class);\n *      b.\u5982\u679c\u627e\u5230\u76f8\u540c\u7c7b\u578b\u7684\u7ec4\u4ef6\uff0c\u518d\u5c06\u5c5e\u6027\u7684\u540d\u79f0\u4f5c\u4e3a\u7ec4\u4ef6\u7684id\u53bb\u5bb9\u5668\u4e2d\u67e5\u627eapplicationContext.getBean(\"bookDao\")\n *      c.\u5728\u88ab\u88c5\u914d\u7684\u53d8\u91cf\u4e0a\uff08\u5373\u4f7f\u7528@Autowired\u6ce8\u89e3\u7684\u5730\u65b9\uff09\uff0c\u4f7f\u7528@Qualifier\u6ce8\u89e3\u6307\u5b9a\u8981\u88c5\u914d\u7684\u7ec4\u4ef6\u7684id\uff0c\u800c\u4e0d\u662f\u4f7f\u7528\u5c5e\u6027\u540d\n *      d.\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u4e00\u5b9a\u8981\u5c06\u5c5e\u6027\u8d4b\u503c\u597d\uff0c\u5982\u679c\u6ca1\u6709\u627e\u5230\u5c31\u4f1a\u62a5\u9519\uff0c\u4f46\u4e5f\u53ef\u4ee5\u4f7f\u7528@Autowired(required = false)\u8bbe\u7f6e\u81ea\u52a8\u88c5\u914d\u662f\u975e\u5fc5\u987b\u7684\uff0c\u80fd\u88c5\u914d\u5219\u88c5\u914d\uff0c\u5982\u679c\u627e\u4e0d\u5230\u5c31\u4e0d\u88c5\u914d\n *      e.\u5728\u7ec4\u4ef6\u4e0a\uff08\u5373\u7ec4\u4ef6\u6ce8\u518c\u7684\u5730\u65b9\uff0c\u5982@Bean\u3001@Service\u7b49\u6ce8\u89e3\u4e0a\uff09\uff0c\u4f7f\u7528@Primary\u6ce8\u89e3\uff0c\u8ba9Spring\u8fdb\u884c\u81ea\u52a8\u88c5\u914d\u7684\u65f6\u5019\uff0c\u9ed8\u8ba4\u4f7f\u7528\u9996\u9009\u7684Bean\uff0c\u4e5f\u53ef\u4ee5\u7ee7\u7eed\u4f7f\u7528@Qualifier\u6ce8\u89e3\u6307\u5b9a\u9700\u8981\u88c5\u914d\u7684bean\u7684\u540d\u5b57\n *\/\n@Configuration\n@ComponentScan({\"com.atguigu.service\", \"com.atguigu.dao\", \"com.atguigu.controller\"})\npublic class MainConfigOfAutowired {\n\n    @Primary\n    @Bean(\"bookDao2\")\n    public BookDao bookDao() {\n        BookDao bookDao = new BookDao();\n        bookDao.setLable(\"2\");\n        return bookDao;\n    }\n}\n<\/code><\/pre>\n
      \n
    1. Spring\u8fd8\u652f\u6301\u4f7f\u7528@Resource(JSR250)\u548c@Inject(JSR330)\uff0c\u8fd9\u4e24\u4e2a\u6ce8\u89e3\u662fJava\u89c4\u8303\u7684\u6ce8\u89e3\uff0c\u800c@Autowired\u662fSpring\u7684\u6ce8\u89e3
      \n3.1. @Resource\u53ef\u4ee5\u548c@Autowired\u4e00\u6837\u5b9e\u73b0\u81ea\u52a8\u88c5\u914d\u529f\u80fd\uff0c\u4f46\u5176\u9ed8\u8ba4\u662f\u6309\u7167\u5c5e\u6027\u5bf9\u5e94\u7684\u7ec4\u4ef6\u540d\u79f0\u8fdb\u884c\u88c5\u914d\u7684
      \n3.2. @Resource\u82e5\u9700\u8981\u88c5\u914d\u6307\u5b9a\u7684Bean\uff0c\u53ef\u4ee5\u4f7f\u7528\u5176name\u5c5e\u6027\u8fdb\u884c\u8bbe\u7f6e
      \n3.3. @Resource\u6ca1\u6709\u80fd\u652f\u6301@Primary\u529f\u80fd\uff0c\u6ca1\u6709\u652f\u6301@Autowired(required = false)\u529f\u80fd<\/li>\n<\/ol>\n
      @Service\npublic class BookService {\n\n\/\/    @Qualifier(\"bookDao\")\n\/\/    @Autowired(required = false)\n    @Resource(name = \"bookDao2\")\n    private BookDao bookDao;\n\n    public void print() {\n        System.out.println(this.bookDao);\n    }\n\n    @Override\n    public String toString() {\n        return \"BookService{\" +\n                \"bookDao=\" + bookDao +\n                '}';\n    }\n}\n\n<\/code><\/pre>\n
      3.4. \u5982\u679c\u8981\u4f7f\u7528@Inject\u6ce8\u89e3\uff0c\u9700\u8981\u5148\u5bfc\u5165Javax Inject\u4f9d\u8d56<\/p>\n
      <!-- https:\/\/mvnrepository.com\/artifact\/javax.inject\/javax.inject -->\n<dependency>\n    <groupId>javax.inject<\/groupId>\n    <artifactId>javax.inject<\/artifactId>\n    <version>1<\/version>\n<\/dependency>\n<\/code><\/pre>\n
      3.5. @Inject\u652f\u6301@Primary\u529f\u80fd\uff0c\u4f46\u4e0d\u652f\u6301@Autowired(required = false)\u529f\u80fd<\/p>\n
      @Service\npublic class BookService {\n\n\/\/    @Qualifier(\"bookDao\")\n\/\/    @Autowired(required = false)\n\/\/    @Resource(name = \"bookDao2\")\n    @Inject\n    private BookDao bookDao;\n\n    public void print() {\n        System.out.println(this.bookDao);\n    }\n\n    @Override\n    public String toString() {\n        return \"BookService{\" +\n                \"bookDao=\" + bookDao +\n                '}';\n    }\n}\n<\/code><\/pre>\n
        \n
      1. AutowiredAnnotationBeanPostProcessor\uff1a\u8d1f\u8d23\u89e3\u6790\u5b8c\u6210\u81ea\u52a8\u88c5\u914d\uff0c\u5176\u662f\u4e00\u4e2a\u540e\u7f6e\u5904\u7406\u5668\uff0c\u6253\u5f00\u5176\u6e90\u7801\u53ef\u4ee5\u770b\u5230\u5176\u9664\u4e86\u652f\u6301Autowired\u6ce8\u89e3\u5916\uff0c\u8fd8\u652f\u6301Value\u3001Inject\u3001Lookup\u7b49\u6ce8\u89e3<\/li>\n
      2. @Autowired\u53ef\u4ee5\u6807\u6ce8\u5728\u6784\u9020\u5668\u3001\u53c2\u6570\u3001\u65b9\u6cd5\u3001\u5c5e\u6027\u7b49\u4f4d\u7f6e\u5b9e\u73b0\u81ea\u52a8\u6ce8\u89e3
        \n5.1. \u6807\u6ce8\u5728\u65b9\u6cd5\u4e0a<\/li>\n<\/ol>\n
        @Component\npublic class Boss {\n\n    private Car car;\n\n    public Car getCar() {\n        return car;\n    }\n\n    \/\/ \u5c06@Autowired\u6ce8\u89e3\u6807\u6ce8\u5728\u65b9\u6cd5\u4e0a\uff0cSpring\u5bb9\u5668\u5728\u521b\u5efa\u5f53\u524d\u5bf9\u8c61\u65f6\uff0c\u5c31\u4f1a\u8c03\u7528\u8be5\u65b9\u6cd5\u5b8c\u6210\u8d4b\u503c\n    \/\/ \u65b9\u6cd5\u4f7f\u7528\u7684\u53c2\u6570\uff0c\u81ea\u5b9a\u4e49\u7c7b\u578b\u7684\u503c\u4eceIOC\u5bb9\u5668\u4e2d\u83b7\u53d6\n    @Autowired\n    public void setCar(Car car) {\n        this.car = car;\n    }\n\n    @Override\n    public String toString() {\n        return \"Boss{\" +\n                \"car=\" + car +\n                '}';\n    }\n}\n<\/code><\/pre>\n
        5.2. \u6807\u6ce8\u6784\u9020\u5668\u4e0a\uff0c\u5982\u679c\u7ec4\u4ef6\u53ea\u6709\u4e00\u4e2a\u6709\u53c2\u6784\u9020\u5668\uff0c\u8fd9\u4e2a\u6709\u53c2\u6784\u9020\u5668\u7684@Autowired\u53ef\u4ee5\u7701\u7565\uff0c\u53c2\u6570\u4f4d\u7f6e\u7684\u7ec4\u4ef6\u8fd8\u662f\u53ef\u4ee5\u4ece\u5bb9\u5668\u4e2d\u83b7\u53d6<\/p>\n
        \/**\n * @author: wuhaohua\n * @date: Created in 2021\/1\/11 16:54\n * @description: TODO\n * \u9ed8\u8ba4\u52a0\u5728IOC\u5bb9\u5668\u4e2d\u7684\u7ec4\u4ef6\uff0c\u5bb9\u5668\u542f\u52a8\u65f6\u4f1a\u81ea\u52a8\u8c03\u7528\u65e0\u53c2\u6784\u9020\u5668\u521b\u5efa\u5bf9\u8c61\uff0c\u7136\u540e\u518d\u8fdb\u884c\u521d\u59cb\u5316\u8d4b\u503c\u7b49\u64cd\u4f5c\n *\/\n@Component\npublic class Boss {\n\n    private Car car;\n\n    \/\/ \u6784\u9020\u5668\u8981\u7528\u7684\u7ec4\u4ef6\uff0c\u90fd\u662f\u4ece\u5bb9\u5668\u4e2d\u83b7\u53d6\u7684\n    @Autowired\n    public Boss(Car car) {\n        this.car = car;\n        System.out.println(\"Boss...\u6709\u53c2\u6784\u9020\u5668...\");\n    }\n\n    public Car getCar() {\n        return car;\n    }\n\n\n    \/\/ \u5c06@Autowired\u6ce8\u89e3\u6807\u6ce8\u5728\u65b9\u6cd5\u4e0a\uff0cSpring\u5bb9\u5668\u5728\u521b\u5efa\u5f53\u524d\u5bf9\u8c61\u65f6\uff0c\u5c31\u4f1a\u8c03\u7528\u8be5\u65b9\u6cd5\u5b8c\u6210\u8d4b\u503c\n    \/\/ \u65b9\u6cd5\u4f7f\u7528\u7684\u53c2\u6570\uff0c\u81ea\u5b9a\u4e49\u7c7b\u578b\u7684\u503c\u4eceIOC\u5bb9\u5668\u4e2d\u83b7\u53d6\n\/\/    @Autowired\n    public void setCar(Car car) {\n        this.car = car;\n    }\n\n    @Override\n    public String toString() {\n        return \"Boss{\" +\n                \"car=\" + car +\n                '}';\n    }\n}\n<\/code><\/pre>\n
        5.3. \u6807\u6ce8\u5728\u53c2\u6570\u4e0a<\/p>\n
        @Component\npublic class Boss {\n\n    private Car car;\n\n    \/\/ \u6784\u9020\u5668\u8981\u7528\u7684\u7ec4\u4ef6\uff0c\u90fd\u662f\u4ece\u5bb9\u5668\u4e2d\u83b7\u53d6\u7684\n    public Boss(@Autowired Car car) {\n        this.car = car;\n        System.out.println(\"Boss...\u6709\u53c2\u6784\u9020\u5668...\");\n    }\n\n    public Car getCar() {\n        return car;\n    }\n\n\n    \/\/ \u5c06@Autowired\u6ce8\u89e3\u6807\u6ce8\u5728\u65b9\u6cd5\u4e0a\uff0cSpring\u5bb9\u5668\u5728\u521b\u5efa\u5f53\u524d\u5bf9\u8c61\u65f6\uff0c\u5c31\u4f1a\u8c03\u7528\u8be5\u65b9\u6cd5\u5b8c\u6210\u8d4b\u503c\n    \/\/ \u65b9\u6cd5\u4f7f\u7528\u7684\u53c2\u6570\uff0c\u81ea\u5b9a\u4e49\u7c7b\u578b\u7684\u503c\u4eceIOC\u5bb9\u5668\u4e2d\u83b7\u53d6\n\/\/    @Autowired\n    public void setCar(Car car) {\n        this.car = car;\n    }\n\n    @Override\n    public String toString() {\n        return \"Boss{\" +\n                \"car=\" + car +\n                '}';\n    }\n}\n<\/code><\/pre>\n
        5.4. \u6807\u6ce8\u5728@Bean\u6807\u6ce8\u7684\u65b9\u6cd5\u4e0a\uff1a\u521b\u5efa\u5bf9\u8c61\u7684\u65f6\u5019\uff0c\u65b9\u6cd5\u53c2\u6570\u7684\u503c\u662f\u4ece\u5bb9\u5668\u4e2d\u83b7\u53d6\u7684\uff0c\u9ed8\u8ba4\u4e0d\u5199@Autowired\u6ce8\u89e3\uff0c\u6548\u679c\u662f\u4e00\u6837\u7684\uff0c\u90fd\u80fd\u81ea\u52a8\u88c5\u914d<\/p>\n
        \/***\n * @Bean\u6807\u7684\u65b9\u6cd5\uff0c\u521b\u5efa\u5bf9\u8c61\u7684\u65f6\u5019\uff0c\u65b9\u6cd5\u53c2\u6570\u7684\u503c\u662f\u4ece\u5bb9\u5668\u4e2d\u83b7\u53d6\u7684\n **\/\n@Bean\npublic Color color(Car car) {\n    Color color = new Color();\n    color.setCar(car);\n    return color;\n}\n<\/code><\/pre>\n
          \n
        1. \u81ea\u5b9a\u4e49\u7ec4\u4ef6\u60f3\u8981\u4f7f\u7528Spring\u5bb9\u5668\u5e95\u5c42\u7684\u4e00\u4e9b\u7ec4\u4ef6\uff08\u5982ApplicationContext,BeanFactory\u7b49\uff09
          \n6.1. \u81ea\u5b9a\u4e49\u7ec4\u4ef6\u9700\u8981\u5b9e\u73b0xxxAware\u63a5\u53e3\uff0c\u5728\u521b\u5efa\u5bf9\u8c61\u7684\u65f6\u5019\uff0cSpring\u4f1a\u8c03\u7528\u63a5\u53e3\u89c4\u5b9a\u7684\u65b9\u6cd5\u6ce8\u5165\u76f8\u5173\u7ec4\u4ef6<\/li>\n<\/ol>\n
          @Component\npublic class Red implements ApplicationContextAware, BeanNameAware, EmbeddedValueResolverAware {\n\n    private ApplicationContext applicationContext;\n\n    @Override\n    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {\n        System.out.println(\"\u4f20\u5165\u7684IOC\uff1a\" + applicationContext);\n        this.applicationContext = applicationContext;\n    }\n\n    @Override\n    public void setBeanName(String name) {\n        System.out.println(\"\u5f53\u524dBean\u7684\u540d\u5b57\uff1a\" + name);\n    }\n\n    @Override\n    public void setEmbeddedValueResolver(StringValueResolver resolver) {\n        String resolveStringValue = resolver.resolveStringValue(\"\u4f60\u597d${os.name}\uff0c \u6211\u662f#{20*18}\");\n        System.out.println(\"\u89e3\u6790\u7684\u5b57\u7b26\u4e32\uff1a\" + resolveStringValue);\n    }\n}\n<\/code><\/pre>\n
          6.2. \u628aSpring\u5e95\u5c42\u4e00\u4e9b\u7ec4\u4ef6\u6ce8\u5165\u5230\u81ea\u5b9a\u4e49\u7684Bean\u4e2d\uff1axxxAware\uff0c\u529f\u80fd\u4f7f\u7528xxxProcessor\u540e\u7f6e\u5904\u7406\u5668\u5b9e\u73b0\uff0c\u5982ApplicationContextAware\u5176\u662f\u4f7f\u7528ApplicationContextAwareProcessor\u5b9e\u73b0\u6ce8\u5165\u7684<\/p>\n
            \n
          1. @Profile\u6ce8\u89e3\u662fSpring\u4e3a\u6211\u4eec\u63d0\u4f9b\u7684\uff0c\u53ef\u4ee5\u6839\u636e\u5f53\u524d\u73af\u5883\uff08\u5f00\u53d1\u3001\u6d4b\u8bd5\u3001\u751f\u4ea7\u7b49\uff09\uff0c\u52a8\u6001\u7684\u6fc0\u6d3b\u548c\u5207\u6362\u4e00\u7cfb\u5217\u7ec4\u4ef6\uff08\u914d\u7f6e\u3001\u6570\u636e\u6e90\u3001\u4e2d\u95f4\u4ef6\u7b49\uff09\u7684\u529f\u80fd
            \n7.1. \u4ee5\u4e0d\u540c\u73af\u5883\u9700\u8981\u8fde\u63a5\u4e0d\u540c\u6570\u636e\u6e90\u4e3a\u4f8b
            \n\u5728pom\u6587\u4ef6\u4e2d\u5f15\u5165c3p0\u548cmysql-connector\u5305<\/li>\n<\/ol>\n
            <!-- https:\/\/mvnrepository.com\/artifact\/com.mchange\/c3p0 -->\n<dependency>\n    <groupId>com.mchange<\/groupId>\n    <artifactId>c3p0<\/artifactId>\n    <version>0.9.5.5<\/version>\n<\/dependency>\n\n<!-- https:\/\/mvnrepository.com\/artifact\/mysql\/mysql-connector-java -->\n<dependency>\n    <groupId>mysql<\/groupId>\n    <artifactId>mysql-connector-java<\/artifactId>\n    <version>5.1.49<\/version>\n<\/dependency>\n<\/code><\/pre>\n
            \u521b\u5efa\u6570\u636e\u5e93\u914d\u7f6e\u6587\u4ef6dbconfig.properties<\/p>\n
            db.user=root\ndb.password=root\ndb.driverClass=com.mysql.jdbc.Driver\n<\/code><\/pre>\n
            \u521b\u5efa\u5177\u6709\u591a\u73af\u5883\u914d\u7f6e\u7684\u914d\u7f6e\u7c7b<\/p>\n
            @PropertySource(\"classpath:\/dbconfig.properties\")\n@Configuration\npublic class MainConfigOfProfile implements EmbeddedValueResolverAware {\n\n    @Value(\"{db.user}\")\n    private String user;\n\n    private StringValueResolver valueResolver;\n\n    private String diverClass;\n\n    @Profile(\"test\")\n    @Bean\n    public Yellow yellow() {\n        return new Yellow();\n    }\n\n    @Profile(\"default\")\n    @Bean(\"testDataSource\")\n    public DataSource dataSourceTest(@Value(\"<\/span>{db.password}\") String pwd) throws PropertyVetoException {\n        ComboPooledDataSource dataSource = new ComboPooledDataSource();\n        dataSource.setUser(user);\n        dataSource.setPassword(pwd);\n        dataSource.setJdbcUrl(\"jdbc:mysql:\/\/localhost:3306\/test\");\n        dataSource.setDriverClass(diverClass);\n        return dataSource;\n    }\n\n    @Profile(\"dev\")\n    @Bean(\"devDataSource\")\n    public DataSource dataSourceDev(@Value(\"{db.password}\") String pwd) throws PropertyVetoException {\n        ComboPooledDataSource dataSource = new ComboPooledDataSource();\n        dataSource.setUser(user);\n        dataSource.setPassword(pwd);\n        dataSource.setJdbcUrl(\"jdbc:mysql:\/\/localhost:3306\/pc\");\n        dataSource.setDriverClass(diverClass);\n        return dataSource;\n    }\n\n    @Profile(\"prod\")\n    @Bean(\"prodDataSource\")\n    public DataSource dataSourceProd(@Value(\"<\/span>{db.password}\") String pwd) throws PropertyVetoException {\n        ComboPooledDataSource dataSource = new ComboPooledDataSource();\n        dataSource.setUser(user);\n        dataSource.setPassword(pwd);\n        dataSource.setJdbcUrl(\"jdbc:mysql:\/\/localhost:3306\/sw-zs\");\n        dataSource.setDriverClass(diverClass);\n        return dataSource;\n    }\n\n    @Override\n    public void setEmbeddedValueResolver(StringValueResolver resolver) {\n        this.valueResolver = resolver;\n        this.diverClass = valueResolver.resolveStringValue(\"${db.driverClass}\");\n    }\n}\n<\/code><\/pre>\n
            \u521b\u5efa\u7528\u4e8e\u9a8c\u8bc1\u6548\u679c\u7684\u6d4b\u8bd5\u7c7b<\/p>\n
            public class IOCTest_Profile {\n\n    @Test\n    public void test01() {\n        \/\/ 1\u3001\u521b\u5efaIOC\u5bb9\u5668\n        AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(MainConfigOfProfile.class);\n        System.out.println(\"\u5bb9\u5668\u521b\u5efa\u5b8c\u6210... \");\n\n        \/\/ \u5173\u95ed\u5bb9\u5668\n        applicationContext.close();\n        System.out.println(\"\u5bb9\u5668\u521b\u5efa\u5b8c\u6210... \");\n    }\n}\n<\/code><\/pre>\n
            7.2. @Profile\u6ce8\u89e3\uff0c\u7528\u4e8e\u6307\u5b9a\u5f53\u524d\u7ec4\u4ef6\u5728\u54ea\u4e2a\u73af\u5883\u7684\u60c5\u51b5\u4e0b\u624d\u80fd\u88ab\u6ce8\u518c\u5230\u5bb9\u5668\u4e2d\uff0c\u5982\u679c\u5f53\u524d\u7ec4\u4ef6\u6ca1\u6709\u6307\u5b9a\uff0c\u5219\u5728\u4efb\u4f55\u73af\u5883\u4e0b\u90fd\u80fd\u6ce8\u518c\u5230\u5bb9\u5668\u4e2d
            \n7.3. \u5207\u6362\u73af\u5883\u7684\u65b9\u5f0f\u5305\u62ec\uff1a
            \na. \u4f7f\u7528\u547d\u4ee4\u884c\u53c2\u6570\uff0c\u5728JVM\u53c2\u6570\u4f4d\u7f6e\u52a0\u8f7d-Dspring.profiles.active=test
            \nb. \u4f7f\u7528\u4ee3\u7801\u7684\u65b9\u5f0f\u6fc0\u6d3b\u67d0\u79cd\u73af\u5883<\/p>\n
            public class IOCTest_Profile {\n\n    @Test\n    public void test01() {\n        \/\/ 1\u3001\u521b\u5efa\u4e00\u4e2aapplicationContext\n        AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext();\n        \/\/ 2\u3001\u8bbe\u7f6e\u9700\u8981\u6fc0\u6d3b\u7684\u73af\u5883\n        applicationContext.getEnvironment().setActiveProfiles(\"dev\");\n        \/\/ 3\u3001\u6ce8\u518c\u4e3b\u914d\u7f6e\u7c7b\n        applicationContext.register(MainConfigOfProfile.class);\n        \/\/ 4\u3001\u542f\u52a8\u5237\u65b0\u5bb9\u5668\n        applicationContext.refresh();\n\n        System.out.println(\"\u5bb9\u5668\u521b\u5efa\u5b8c\u6210... \");\n\n        String[] namesForType = applicationContext.getBeanNamesForType(DataSource.class);\n        for (String name: namesForType) {\n            System.out.println(name);\n        }\n\n        \/\/ \u5173\u95ed\u5bb9\u5668\n        applicationContext.close();\n        System.out.println(\"\u5bb9\u5668\u521b\u5efa\u5b8c\u6210... \");\n    }\n}\n\n<\/code><\/pre>\n
            7.3. \u5f53@Profile\u6ce8\u89e3\u6807\u6ce8\u5728\u914d\u7f6e\u7c7b\u4e0a\u65f6\uff0c\u53ea\u6709\u662f\u6307\u5b9a\u7684\u73af\u5883\u65f6\uff0c\u6574\u4e2a\u914d\u7f6e\u7c7b\u91cc\u9762\u7684\u6240\u6709\u914d\u7f6e\u624d\u4f1a\u751f\u6548
            \n7.4. \u6ca1\u6709\u6807\u6ce8\u73af\u5883\u6807\u8bc6\u7684bean\uff0c\u5728\u4efb\u4f55\u73af\u5883\u4e0b\u90fd\u662f\u4f1a\u88ab\u52a0\u8f7d\u7684<\/p>\n  \n  \n  ","protected":false},"excerpt":{"rendered":"
            \u89c6\u9891\u5730\u5740\uff1ahttps:\/\/www.bilibili.com\/video\/BV1oW41167AV \u5bf9\u5e94\u4ee3\u7801Gi…Continue reading \u300aB\u7ad9-Spring\u6e90\u7801\u89e3\u6790\u300b\u5b66\u4e60\u7b14\u8bb0\uff08\u56db\uff09\u2014\u2014\u81ea\u52a8\u88c5\u914d<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[35,36,44],"class_list":["post-374","post","type-post","status-publish","format-standard","hentry","category-32","tag-spring","tag-36","tag-44"],"_links":{"self":[{"href":"https:\/\/www.softeng.cn\/index.php?rest_route=\/wp\/v2\/posts\/374"}],"collection":[{"href":"https:\/\/www.softeng.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.softeng.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.softeng.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.softeng.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=374"}],"version-history":[{"count":1,"href":"https:\/\/www.softeng.cn\/index.php?rest_route=\/wp\/v2\/posts\/374\/revisions"}],"predecessor-version":[{"id":375,"href":"https:\/\/www.softeng.cn\/index.php?rest_route=\/wp\/v2\/posts\/374\/revisions\/375"}],"wp:attachment":[{"href":"https:\/\/www.softeng.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=374"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.softeng.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=374"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.softeng.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=374"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}