{"id":40446,"date":"2022-11-10T12:52:54","date_gmt":"2023-10-31T22:06:07","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8propertyoverrideconfigurer%e6%9d%a5%e5%b0%86%e5%a4%96%e9%83%a8%e9%85%8d%e7%bd%ae%e7%9a%84%e5%b1%9e%e6%80%a7%e5%80%bc%e8%ae%be%e7%bd%ae%ef%bc%88%e8%a6%86%e7%9b%96%ef%bc%89%e5%88%b0bea\/"},"modified":"2024-04-29T00:01:00","modified_gmt":"2024-04-28T16:01:00","slug":"%e4%bd%bf%e7%94%a8propertyoverrideconfigurer%e6%9d%a5%e5%b0%86%e5%a4%96%e9%83%a8%e9%85%8d%e7%bd%ae%e7%9a%84%e5%b1%9e%e6%80%a7%e5%80%bc%e8%ae%be%e7%bd%ae%ef%bc%88%e8%a6%86%e7%9b%96%ef%bc%89%e5%88%b0bea","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8propertyoverrideconfigurer%e6%9d%a5%e5%b0%86%e5%a4%96%e9%83%a8%e9%85%8d%e7%bd%ae%e7%9a%84%e5%b1%9e%e6%80%a7%e5%80%bc%e8%ae%be%e7%bd%ae%ef%bc%88%e8%a6%86%e7%9b%96%ef%bc%89%e5%88%b0bea\/","title":{"rendered":"\u4f7f\u7528PropertyOverrideConfigurer\u6765\u5c06\u5916\u90e8\u914d\u7f6e\u7684\u5c5e\u6027\u503c\u8bbe\u7f6e\uff08\u8986\u76d6\uff09\u5230Bean\u4e2d"},"content":{"rendered":"

Spring Boot\u63d0\u4f9b\u4e86\u4e00\u79cd\u540d\u4e3a\u201cType-safe Configuration Properties\u201d\u7684\u673a\u5236\uff0c\u5b83\u53ef\u4ee5\u5c06\u5916\u90e8\u914d\u7f6e\u7684\u5c5e\u6027\u503c\uff08\u5982\u5c5e\u6027\u6587\u4ef6\u3001\u7cfb\u7edf\u5c5e\u6027\u3001\u73af\u5883\u53d8\u91cf\u7b49\u8bbe\u7f6e\u7684\u503c\uff09\u8bbe\u7f6e\u5230\u5e26\u6709\u201c@ConfigurationProperties\u201d\u6ce8\u89e3\u7684Bean\u548c\u901a\u8fc7\u201c@ConfigurationProperties\u201d\u6ce8\u89e3\u751f\u6210\u7684Bean\u7684\u5c5e\u6027\u4e2d\u3002<\/p>\n

@Component<\/span>\r\n@ConfigurationProperties<\/span>(<\/span>\"demo\"<\/span>)<\/span>\r\npublic<\/span> class<\/span> DemoProperties<\/span> {<\/span>\r\n  private<\/span> String<\/span> foo<\/span>;<\/span>\r\n  \/\/ ...<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
@ConfigurationProperties<\/span>(<\/span>\"demo\"<\/span>)<\/span>\r\n@Bean<\/span>\r\nDemoProperties<\/span> demoProperties<\/span>()<\/span> {<\/span>\r\n  return<\/span> new<\/span> DemoProperties<\/span>();<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
demo.foo<\/span>=<\/span>bar<\/span>\r\n<\/code><\/pre>\n
\u5728\u672c\u6587\u4e2d\uff0c\u6211\u60f3\u4ecb\u7ecd\u4e00\u4e0b\u5982\u4f55\u4f7f\u7528Spring Framework\u6240\u63d0\u4f9b\u7684PropertyOverrideConfigurer\u6765\u5b9e\u73b0\u7c7b\u4f3c\u7684\u529f\u80fd\uff01<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u4f7f\u7528Spring Boot\uff0c\u4f46\u662f\u5e0c\u671b\u5728\u65e0\u6cd5\u901a\u8fc7Spring Boot\u673a\u5236\u8bbf\u95ee\u7684Bean\u5c5e\u6027\u4e2d\u8bbe\u7f6e\u4efb\u610f\u503c\uff0c\u6216\u8005\u7531\u4e8e\u5404\u79cd\u539f\u56e0\u4e0d\u4f7f\u7528\uff08\u65e0\u6cd5\u4f7f\u7528\uff09Spring Boot\uff0c\u4f46\u662f\u4ecd\u7136\u60f3\u8981\u5b9e\u73b0\u4e00\u4e9b\u7c7b\u4f3c”Type-safe Configuration Properties”\u7684\u529f\u80fd\uff0c\u90a3\u4e48\u8003\u8651\u4f7f\u7528PropertyOverrideConfigurer\u53ef\u80fd\u662f\u4e2a\u4e0d\u9519\u7684\u9009\u62e9\u3002\u4e2a\u4eba\u5e0c\u671b”Type-safe Configuration Properties”\u80fd\u591f\u5728Spring Framework\u672c\u8eab\u4e2d\u5f97\u5230\u652f\u6301\uff0c\u56e0\u4e3a\u6211\u4e5f\u60f3\u4f7f\u7528yaml…..<\/p>\n
\u9a8c\u8bc1\u7248\u672c<\/h1>\n
    \n
  • \n
      Spring Boot 2.0.3.RELEASE<\/ul>\n<\/li>\n<\/ul>\n
       <\/p>\n
        Spring Framework 5.0.7.RELEASE<\/ul>\n
        PropertyOverrideConfigurer\u662f\u4ec0\u4e48\uff1f<\/h1>\n
        PropertyOverrideConfigurer\u662fSpring\u7684DI\u5bb9\u5668\u4e0a\u7684\u4e00\u4e2a\u529f\u80fd\uff0c\u5b83\u53ef\u4ee5\u901a\u8fc7\u8bfb\u53d6\u5c5e\u6027\u6587\u4ef6\u7b49\u6765\u66ff\u6362\u7ba1\u7406\u7684Bean\u7684\u5c5e\u6027\u503c\u3002\u4f8b\u5982\uff0c\u5373\u4f7f\u5728Bean\u5b9a\u4e49\u6587\u4ef6\u4e2d\u786c\u7f16\u7801\u4e86\u914d\u7f6e\u503c…<\/p>\n
        @Bean<\/span>\r\nDemoProperties<\/span> demoProperties<\/span>()<\/span> {<\/span>\r\n  DemoProperties<\/span>\u3000<\/span>properties<\/span> =<\/span> new<\/span> DemoProperties<\/span>();<\/span>\r\n  properties<\/span>.<\/span>setFoo<\/span>(<\/span>\"hoge\"<\/span>);<\/span>\r\n  return<\/span> properties<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
        \u5982\u679c\u51c6\u5907\u597dPropertyOverrideConfigurer\u7684Bean\u5b9a\u4e49\u548c\u5c5e\u6027\u6587\u4ef6\uff0c\u5219\u53ef\u4ee5\u66f4\u6539\u914d\u7f6e\u503c\u3002<\/p>\n
        @Bean<\/span>\r\nstatic<\/span> PropertyOverrideConfigurer<\/span> propertyOverrideConfigurer<\/span>(<\/span>@Value<\/span>(<\/span>\"classpath*:demo-properties.properties\"<\/span>)<\/span> Resource<\/span>...<\/span> resources<\/span>)<\/span> {<\/span>\r\n  PropertyOverrideConfigurer<\/span> configurer<\/span> =<\/span> new<\/span> PropertyOverrideConfigurer<\/span>();<\/span>\r\n  configurer<\/span>.<\/span>setLocations<\/span>(<\/span>resources<\/span>);<\/span>\r\n  return<\/span> configurer<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
        demoProperties.foo<\/span>=<\/span>bar<\/span>\r\n<\/code><\/pre>\n
        \u5c5e\u6027\u952e\u7684\u89c4\u5219 de<\/h1>\n
        \u8981\u4f7f\u7528PropertyOverrideConfigurer\u6765\u8986\u76d6\u5c5e\u6027\u503c\u5230Bean\u4e2d\uff0c\u9700\u8981\u5728\u6307\u5b9a\u7684\u5c5e\u6027\u6587\u4ef6\u4e2d\u4f7f\u7528”{Bean\u540d\u79f0}.{Bean\u5c5e\u6027\u8def\u5f84}”\u4f5c\u4e3a\u952e\u6765\u6307\u5b9a\u503c\u3002\u5f53\u7136\uff0c\u5b83\u8fd8\u652f\u6301\u5d4c\u5957\u5bf9\u8c61\u3001Map\u3001List\u7b49\u6570\u636e\u7ed3\u6784\u3002<\/p>\n
        public<\/span> class<\/span> DemoProperties<\/span> {<\/span>\r\n  private<\/span> String<\/span> foo<\/span>;<\/span>\r\n  private<\/span> final<\/span> Connection<\/span> defaultConnection<\/span> =<\/span> new<\/span> Connection<\/span>();<\/span>\r\n  private<\/span> final<\/span> Map<\/span><<\/span>String<\/span>,<\/span> Connection<\/span>><\/span> connections<\/span> =<\/span> LazyMap<\/span>.<\/span>lazyMap<\/span>(<\/span>new<\/span> HashMap<\/span><>(),<\/span> Connection:<\/span>:<\/span>new<\/span>);<\/span>\r\n  private<\/span> final<\/span> List<\/span><<\/span>Template<\/span>><\/span> templates<\/span> =<\/span> LazyList<\/span>.<\/span>lazyList<\/span>(<\/span>new<\/span> ArrayList<\/span><>(),<\/span> Template:<\/span>:<\/span>new<\/span>);<\/span>\r\n\r\n  \/\/ ...<\/span>\r\n\r\n  static<\/span> class<\/span> Connection<\/span> {<\/span>\r\n    private<\/span> String<\/span> host<\/span>;<\/span>\r\n    private<\/span> int<\/span> port<\/span>;<\/span>\r\n    \/\/ ...<\/span>\r\n  }<\/span>\r\n\r\n  static<\/span> class<\/span> Template<\/span> {<\/span>\r\n    private<\/span> Resource<\/span> file<\/span>;<\/span>\r\n    private<\/span> Charset<\/span> encoding<\/span>;<\/span>\r\n    \/\/ ...<\/span>\r\n  }<\/span>\r\n\r\n}<\/span>\r\n<\/code><\/pre>\n
        demoProperties.defaultConnection.host<\/span>=<\/span>localhost<\/span>\r\ndemoProperties.defaultConnection.port<\/span>=<\/span>9999<\/span>\r\n<\/code><\/pre>\n
        demoProperties.connections[github]<\/span>.host<\/span>=<\/span>github.com<\/span>\r\ndemoProperties.connections[github]<\/span>.port<\/span>=<\/span>443<\/span>\r\n<\/code><\/pre>\n
        demoProperties.templates[0]<\/span>.file<\/span>=<\/span>a.txt<\/span>\r\ndemoProperties.templates[0]<\/span>.encoding<\/span>=<\/span>UTF-8<\/span>\r\ndemoProperties.templates[1]<\/span>.file<\/span>=<\/span>b.txt<\/span>\r\ndemoProperties.templates[1]<\/span>.encoding<\/span>=<\/span>Windows-31J<\/span>\r\n<\/code><\/pre>\n
        \u5982\u679c\u5b58\u5728\u65e0\u6548\u7684\u5c5e\u6027\u952e\u65f6\u7684\u884c\u4e3a\u3002<\/h1>\n
        \u5982\u679c\u5728DI\u5bb9\u5668\u4e2d\u627e\u4e0d\u5230\u4e0e\u5c5e\u6027\u952e\u7684”Bean\u540d”\u90e8\u5206\u5339\u914d\u7684Bean\uff0c\u5219\u88ab\u89c6\u4e3a\u65e0\u6548\u7684\u5c5e\u6027\u952e\uff0c\u5e76\u4e14\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u4f1a\u4ea7\u751f\u9519\u8bef\u3002<\/p>\n
        # ...\r\n# DI\u30b3\u30f3\u30c6\u30ca\u306btestBean\u3068\u3044\u3046Bean\u304c\u3044\u306a\u3044\u3068\u30a8\u30e9\u30fc\u306b\u306a\u308b\r\n<\/span>testBean.foo<\/span>=<\/span>aaa<\/span>\r\n<\/code><\/pre>\n
        \u60a8\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u7684Bean\u5b9a\u4e49\u6765\u4fee\u6539\u6b64\u64cd\u4f5c\u3002<\/p>\n
        @Bean<\/span>\r\nstatic<\/span> PropertyOverrideConfigurer<\/span> propertyOverrideConfigurer<\/span>(<\/span>@Value<\/span>(<\/span>\"classpath*:demo-properties.properties\"<\/span>)<\/span> Resource<\/span>...<\/span> resources<\/span>)<\/span> {<\/span>\r\n  PropertyOverrideConfigurer<\/span> configurer<\/span> =<\/span> new<\/span> PropertyOverrideConfigurer<\/span>();<\/span>\r\n  configurer<\/span>.<\/span>setLocations<\/span>(<\/span>resources<\/span>);<\/span>\r\n  configurer<\/span>.<\/span>setIgnoreInvalidKeys<\/span>(<\/span>true<\/span>);<\/span> \/\/ true\u3092\u8a2d\u5b9a\u3059\u308b\u3068\u7121\u52b9\u306a\u30d7\u30ed\u30d1\u30c6\u30a3\u30ad\u30fc\u304c\u3042\u3063\u3066\u3082\u30a8\u30e9\u30fc\u306b\u306a\u3089\u306a\u3044<\/span>\r\n  return<\/span> configurer<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
        \u5982\u679c\u6307\u5b9a\u7684\u5c5e\u6027\u6587\u4ef6\u4e0d\u5b58\u5728\uff0c\u5c06\u53d1\u751f\u4ec0\u4e48\u884c\u4e3a\u3002<\/h1>\n
        \u5982\u679c\u6307\u5b9a\u7684\u5c5e\u6027\u6587\u4ef6\u4e0d\u5b58\u5728\uff0c\u5219\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u4f1a\u51fa\u9519\u3002\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u7684Bean\u5b9a\u4e49\u6765\u66f4\u6539\u8fd9\u79cd\u884c\u4e3a\u3002<\/p>\n
        @Bean<\/span>\r\nstatic<\/span> PropertyOverrideConfigurer<\/span> propertyOverrideConfigurer<\/span>()<\/span> {<\/span>\r\n  PropertyOverrideConfigurer<\/span> configurer<\/span> =<\/span> new<\/span> PropertyOverrideConfigurer<\/span>();<\/span>\r\n  configurer<\/span>.<\/span>setLocations<\/span>(<\/span>new<\/span> ClassPathResource<\/span>(<\/span>\"demo-properties.properties\"<\/span>));<\/span>\r\n  configurer<\/span>.<\/span>setIgnoreInvalidKeys<\/span>(<\/span>true<\/span>);<\/span>\r\n  configurer<\/span>.<\/span>setIgnoreResourceNotFound<\/span>(<\/span>true<\/span>);<\/span> \/\/ true\u3092\u8a2d\u5b9a\u3059\u308b\u3068\u30d7\u30ed\u30d1\u30c6\u30a3\u30d5\u30a1\u30a4\u30eb\u304c\u306a\u304f\u3066\u3082\u30a8\u30e9\u30fc\u306b\u306a\u3089\u306a\u3044<\/span>\r\n  return<\/span> configurer<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
        \u4f7f\u7528\u5c5e\u6027\u5360\u4f4d\u7b26<\/h1>\n
        \u5728\u5c5e\u6027\u6587\u4ef6\u4e2d\uff0c\u53ef\u4ee5\u6307\u5b9a\u5c5e\u6027\u5360\u4f4d\u7b26\uff08${…}\uff09\u6765\u6307\u5b9a\u914d\u7f6e\u503c\u3002\u4f7f\u7528\u5c5e\u6027\u5360\u4f4d\u7b26\u53ef\u4ee5\u5c06Spring\uff08Spring Boot\uff09\u5c5e\u6027\u7ba1\u7406\u529f\u80fd\u4e2d\u7ba1\u7406\u7684\u5c5e\u6027\u503c\uff08\u73af\u5883\u53d8\u91cf\u3001\u7cfb\u7edf\u5c5e\u6027\u7b49\u6307\u5b9a\u7684\u503c\uff09\u66ff\u6362\u6210\u5b9e\u9645\u7684\u503c\uff0c\u56e0\u6b64\u53ef\u4ee5\u7528\u4e8e\u6839\u636e\u6267\u884c\u73af\u5883\u6539\u53d8\u914d\u7f6e\u503c\u7684\u60c5\u51b5\u3002<\/p>\n
        \u5982\u679c\u4f7f\u7528Spring Boot\u7684\u5e94\u7528\u7a0b\u5e8f,<\/p>\n
        demoProperties.defaultConnection.host<\/span>=<\/span>${default.host:localhost}<\/span>\r\n<\/code><\/pre>\n
        default.host<\/span>=<\/span>myhost<\/span>\r\n<\/code><\/pre>\n
        \u90a3\u4e48\uff0c\u5728\u8fd0\u884c\u65f6\u5c06\u4f1a\u89e3\u91ca\u5982\u4e0b\uff0c\u5e76\u8bbe\u5b9a\u4e3amyhost\u3002
        \n\u5373\u4f7f\u5360\u4f4d\u7b26\u6307\u5b9a\u7684\u5c5e\u6027\u952e\u4e0d\u5b58\u5728\uff0c\u5982\u679c\u6307\u5b9a\u4e86\u9ed8\u8ba4\u503c\uff0c\u5219\u4e0d\u4f1a\u51fa\u9519\uff0c\u5e76\u4e14\u5c06\u5e94\u7528\u4e3alocalhost\uff0c\u56e0\u6b64\u6700\u597d\u5c06\u9ed8\u8ba4\u503c\u8bbe\u7f6e\u4e3a\u672c\u5730\u5f00\u53d1\u73af\u5883\u7684\u914d\u7f6e\u503c\u3002<\/p>\n
        demoProperties.defaultConnection.host<\/span>=<\/span>myhost<\/span>\r\n<\/code><\/pre>\n
        \u6ce8\u610f\uff1a\u5728PropertyOverrideConfigurer\u4e2d\u6307\u5b9a\u7684\u5c5e\u6027\u6587\u4ef6\u4e2d\u5b9a\u4e49\u7684\u5c5e\u6027\u952e\u4e0d\u80fd\u6307\u5b9a\u4e3a\u5c5e\u6027\u5360\u4f4d\u7b26\u3002\u8fd9\u662f\u56e0\u4e3a\u5728PropertyOverrideConfigurer\u4e2d\u6307\u5b9a\u7684\u5c5e\u6027\u6587\u4ef6\u4e0d\u4f1a\u88abSpring(Spring Boot)\u7684\u5c5e\u6027\u7ba1\u7406\u529f\u80fd\u89c6\u4e3a\u8981\u7ba1\u7406\u7684\u5c5e\u6027\u503c\u3002<\/p>\n
        \u5bf9\u4e8e\u5bb9\u5668\u5bf9\u8c61\u7684\u64cd\u4f5c<\/h1>\n
        \u5f53\u5904\u7406\u5d4c\u5957\u5bf9\u8c61\u3001Map\u3001List\u7b49\u5bb9\u5668\uff08\u7528\u4e8e\u4fdd\u5b58\u503c\u7684\u5bf9\u8c61\uff09\u65f6\uff0c\u4f1a\u5728\u4ee5\u4e0b\u60c5\u51b5\u4e0b\u62a5\u9519\u3002<\/p>\n
          \n
        • \n
            \u30b3\u30f3\u30c6\u30ca\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304cnull\u306e\u5834\u5408<\/ul>\n<\/li>\n<\/ul>\n
             <\/p>\n
              \n
            • \n
                Map\u306e\u5834\u5408\u306f\u30ad\u30fc\u306b\u5bfe\u5fdc\u3059\u308b\u30cd\u30b9\u30c8\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304cnull\u306e\u5834\u5408\uff08\u30ad\u30fc\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u3082\u540c\u69d8\uff09<\/ul>\n<\/li>\n<\/ul>\n
                 <\/p>\n
                  List\u306e\u5834\u5408\u306findex\u4f4d\u7f6e\u306b\u5b58\u5728\u3059\u308b\u30cd\u30b9\u30c8\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304cnull\u306e\u5834\u5408\uff08\u6307\u5b9a\u3057\u305findex\u4f4d\u7f6e\u306b\u8981\u7d20\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u3082\u540c\u69d8\uff09<\/ul>\n
                  \u8981\u907f\u514d\u8fd9\u4e2a\u64cd\u4f5c\uff0c\u60a8\u9700\u8981\u5728\u5bb9\u5668\u5bf9\u8c61\u4e2d\u8bbe\u7f6e\u4e00\u4e2a\u7a7a\u5bf9\u8c61\u3002\u6b64\u5916\uff0c\u5982\u679c\u8981\u5b58\u50a8\u5d4c\u5957\u5bf9\u8c61\u5728Map\u548cList\u4e2d\uff0c\u8fd8\u9700\u8981\u5b9e\u73b0\u5ef6\u8fdf\u521d\u59cb\u5316\u673a\u5236\u3002\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u5728\u672c\u6761\u76ee\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86commons-collections\u5e93\u7684LazyMap\u548cLazyList\u6765\u652f\u6301\u5ef6\u8fdf\u521d\u59cb\u5316\u673a\u5236\u3002<\/p>\n
                  <dependency><\/span>\r\n  <groupId><\/span>org.apache.commons<\/groupId><\/span>\r\n  <artifactId><\/span>commons-collections4<\/artifactId><\/span>\r\n  <version><\/span>4.3<\/version><\/span>\r\n<\/dependency><\/span>\r\n<\/code><\/pre>\n
                  public<\/span> class<\/span> DemoProperties<\/span> {<\/span>\r\n  \/\/ ...<\/span>\r\n  private<\/span> final<\/span> Connection<\/span> defaultConnection<\/span> =<\/span> \r\n                new<\/span> Connection<\/span>();<\/span> \/\/ \u7a7a\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u751f\u6210\u3057\u3066\u304a\u304f<\/span>\r\n  private<\/span> final<\/span> Map<\/span><<\/span>String<\/span>,<\/span> Connection<\/span>><\/span> connections<\/span> =<\/span> \r\n                LazyMap<\/span>.<\/span>lazyMap<\/span>(<\/span>new<\/span> HashMap<\/span><>(),<\/span> Connection:<\/span>:<\/span>new<\/span>);<\/span> \/\/ \u9045\u5ef6\u521d\u671f\u5316\u5b9f\u88c5\u306eMap\u3092\u751f\u6210\u3057\u3066\u304a\u304f<\/span>\r\n  private<\/span> final<\/span> List<\/span><<\/span>Template<\/span>><\/span> templates<\/span> =<\/span> \r\n                LazyList<\/span>.<\/span>lazyList<\/span>(<\/span>new<\/span> ArrayList<\/span><>(),<\/span> Template:<\/span>:<\/span>new<\/span>);<\/span> \/\/ \u9045\u5ef6\u521d\u671f\u5316\u5b9f\u88c5\u306eList\u3092\u751f\u6210\u3057\u3066\u304a\u304f<\/span>\r\n  \/\/ ...<\/span>\r\n<\/code><\/pre>\n
                  \u9644\u52a0\u7684\u9644\u4ef6<\/h1>\n
                  \u5728\u540c\u4e00\u4e2a\u6587\u4ef6\u4e2d\u5c06\u5c5e\u6027\u6307\u5b9a\u4e3a\u5360\u4f4d\u7b26\u7684\u65b9\u6cd5<\/h2>\n
                  \u5982\u679c\u60f3\u8981\u5c06\u5728PropertyOverrideConfigurer\u6307\u5b9a\u7684\u5c5e\u6027\u6587\u4ef6\u4e2d\u7684\u5c5e\u6027\u4f5c\u4e3a\u5360\u4f4d\u7b26\u8fdb\u884c\u6307\u5b9a\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528@PropertySource\u6216PropertySourcesPlaceholderConfigurer\uff0c\u5c06\u8be5\u6587\u4ef6\u7eb3\u5165Spring\u7684\u5c5e\u6027\u7ba1\u7406\u529f\u80fd\u7684\u63a7\u5236\u8303\u56f4\u5185\u6765\u89e3\u51b3\u6b64\u95ee\u9898\u3002<\/p>\n
                  @SpringBootApplication<\/span>\r\n@PropertySource<\/span>(<\/span>\"classpath:demo-properties.properties\"<\/span>)<\/span>\r\npublic<\/span> class<\/span> DemoApplication<\/span> {<\/span>\r\n  \/\/ ...<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                  @Bean<\/span>\r\nstatic<\/span> PropertySourcesPlaceholderConfigurer<\/span> propertySourcesPlaceholderConfigurer<\/span>(<\/span>\r\n              @Value<\/span>(<\/span>\"classpath*:*-properties.properties\"<\/span>)<\/span> Resource<\/span>...<\/span> resources<\/span>)<\/span> {<\/span>\r\n  PropertySourcesPlaceholderConfigurer<\/span> configurer<\/span> =<\/span> new<\/span> PropertySourcesPlaceholderConfigurer<\/span>();<\/span>\r\n  configurer<\/span>.<\/span>setLocations<\/span>(<\/span>resources<\/span>);<\/span>\r\n  return<\/span> configurer<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                  \u7531\u4e8e@PropertySource\u65e0\u6cd5\u4f7f\u7528\u901a\u914d\u7b26\u8fdb\u884c\u6307\u5b9a\uff0c\u56e0\u6b64\u53ea\u80fd\u6307\u5b9a\u4e00\u4e2a\u6587\u4ef6\uff0c\u800cPropertySourcesPlaceholderConfigurer\u5219\u53ef\u4ee5\u6307\u5b9a\u591a\u4e2a\u6587\u4ef6\u3002<\/p>\n
                  \u5982\u4f55\u4fee\u6539Spring\u5bf9\u5bb9\u5668\u5bf9\u8c61\u7684\u9ed8\u8ba4\u884c\u4e3a<\/h2>\n
                  \u5728Spring\u7684DI\u5bb9\u5668\u7684\u9ed8\u8ba4\u884c\u4e3a\u4e2d\uff0c\u5982\u679c\u5bb9\u5668\u5bf9\u8c61\u4e3anull\u6216\u8005Map\u7684\u952e\u6216List\u7684\u4f4d\u7f6e\u5bf9\u5e94\u7684\u5d4c\u5957\u5bf9\u8c61\u4e3anull\uff08\u5373\u5bf9\u5e94\u7684\u5143\u7d20\u4e0d\u5b58\u5728\uff09\uff0c\u5c31\u4f1a\u5bfc\u81f4\u9519\u8bef\u3002\u5728\u672c\u8282\u4e2d\uff0c\u6211\u4eec\u4ecb\u7ecd\u4e86\u8bbe\u7f6e\u7a7a\u5bf9\u8c61\u6216\u4f7f\u7528\u5ef6\u8fdf\u521d\u59cb\u5316\u5b9e\u73b0\u7684\u96c6\u5408\u7684\u65b9\u6cd5\u6765\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u4f46\u4e5f\u53ef\u4ee5\u901a\u8fc7\u66f4\u6539Spring\u7684DI\u5bb9\u5668\u7684\u884c\u4e3a\u6765\u89e3\u51b3\u3002\u7136\u800c…\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u91c7\u7528\u8fd9\u79cd\u65b9\u6cd5\u53ef\u80fd\u4f1a\u5f71\u54cdDI\u5bb9\u5668\u7684\u6574\u4f53\u8fd0\u884c\u3002<\/p>\n
                  \u5982\u679c\u662fSpring Boot\u5e94\u7528\u7a0b\u5e8f\uff0c\u53ea\u9700\u8981\u521b\u5efa\u4ee5\u4e0b\u7c7b\u578b\u7684ApplicationContext\u6269\u5c55\u7c7b\uff0c\u5e76\u5c06\u5176\u6307\u5b9a\u4e3aSpring Boot\u8981\u4f7f\u7528\u7684\u4e0a\u4e0b\u6587\u7c7b\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n
                  public<\/span> class<\/span> MyAnnotationConfigApplicationContext<\/span> extends<\/span> AnnotationConfigApplicationContext<\/span> {<\/span>\r\n  public<\/span> MyAnnotationConfigApplicationContext<\/span>()<\/span> {<\/span>\r\n    super<\/span>(<\/span>new<\/span> DefaultListableBeanFactory<\/span>(){<\/span>\r\n      @Override<\/span>\r\n      protected<\/span> void<\/span> initBeanWrapper<\/span>(<\/span>BeanWrapper<\/span> bw<\/span>)<\/span> {<\/span>\r\n        super<\/span>.<\/span>initBeanWrapper<\/span>(<\/span>bw<\/span>);<\/span>\r\n        bw<\/span>.<\/span>setAutoGrowNestedPaths<\/span>(<\/span>true<\/span>);<\/span> \/\/ \u3000\u30cd\u30b9\u30c8\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u306b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u751f\u6210\u3059\u308b\u3088\u3046\u306b\u8a2d\u5b9a\u3059\u308b<\/span>\r\n      }<\/span>\r\n    });<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                  @SpringBootApplication<\/span>\r\npublic<\/span> class<\/span> DemoApplication<\/span> {<\/span>\r\n\r\n  public<\/span> static<\/span> void<\/span> main<\/span>(<\/span>String<\/span>[]<\/span> args<\/span>)<\/span> {<\/span>\r\n    new<\/span> SpringApplicationBuilder<\/span>()<\/span>\r\n        .<\/span>sources<\/span>(<\/span>DemoApplication<\/span>.<\/span>class<\/span>)<\/span>\r\n        .<\/span>contextClass<\/span>(<\/span>MyAnnotationConfigApplicationContext<\/span>.<\/span>class<\/span>)<\/span> \/\/ \u62e1\u5f35\u3057\u305fApplicationContext\u30af\u30e9\u30b9\u3092\u6307\u5b9a<\/span>\r\n        .<\/span>run<\/span>(<\/span>args<\/span>);<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                  \u672c\u7bc7\u4ecb\u7ecd\u4e86\u4e00\u4e2a\u5728\u975eWeb\u73af\u5883\u4e2d\u4f7f\u7528\u7684ApplicationContext\u7c7b\u7684\u6269\u5c55\u793a\u4f8b\uff0c\u4f46\u5b9e\u9645\u4e0a\u9700\u8981\u6839\u636e\u6240\u4f7f\u7528\u7684\u73af\u5883\u6765\u6269\u5c55\u76f8\u5e94\u7684\u5b9e\u73b0\u7c7b\u3002<\/p>\n
                  \n
                  \u74b0\u5883Spring Boot\u304c\u9069\u7528\u3059\u308b\u5b9f\u88c5\u30af\u30e9\u30b9Servlet Weborg.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext<\/code>Reactive Weborg.springframework.boot.web.reactive.context.AnnotationConfigReactiveWebServerApplicationContext<\/code>\u30b9\u30bf\u30f3\u30c9\u30a2\u30ed\u30f3(\u975eWeb)org.springframework.context.annotation.AnnotationConfigApplicationContext<\/code><\/div>\n<\/div>\n
                  \u5728Spring Boot\u4e4b\u5916\u7684\u66f4\u6539\u65b9\u6cd5\u6211\u4eec\u4e0d\u4e88\u4ee5\u8ba8\u8bba\uff0c\u4f46\u53ef\u4ee5\u901a\u8fc7\u91cd\u5199\u4f7f\u7528\u7684ApplicationContext\u5b9e\u73b0\u7c7b\u4e2d\u7684DefaultListableBeanFactory\u7684initBeanWrapper\u65b9\u6cd5\uff0c\u5e76\u5c06BeanWrapper\u7684autoGrowNestedPaths\u8bbe\u4e3atrue\u6765\u5b9e\u73b0\u76f8\u540c\u7684\u529f\u80fd\u3002<\/p>\n
                  \u603b\u7ed3<\/h1>\n
                  \u6211\u76ee\u524d\u5728\u5de5\u4f5c\u4e2d\u53c2\u4e0e\u5f00\u53d1\u7684\u5e94\u7528\u7a0b\u5e8f\uff08\u4e0d\u5e78\u7684\u662f… \u4e0d\u662fSpring Boot\u5e94\u7528\u7a0b\u5e8f\uff09\uff0c\u6211\u60f3\u8981\u505a\u4e00\u4e9bType-safe Configuration Properties\u7684\u4e8b\u60c5\uff08\u5c06\u6307\u5b9a\u7684\u503c\u4ece\u5c5e\u6027\u6587\u4ef6\u7ed1\u5b9a\u5230Java\u5bf9\u8c61\u4e2d\uff09\uff0c\u6211\u60f3\u77e5\u9053\u662f\u5426\u53ef\u4ee5\u4f7f\u7528PropertyOverrideConfigurer\uff01 \u6240\u4ee5\u6211\u641c\u7d22\u5e76\u8bb0\u5f55\u4e86\u4e00\u4e0b\u7ed3\u679c\u3002<\/p>\n
                  \u6700\u540e\uff0c\u5f53\u5728Spring\u4e2d\u6784\u5efa\u5e94\u7528\u7a0b\u5e8f\u65f6\uff0c\u5e76\u4e0d\u9700\u8981\u624b\u52a8\u5b9a\u4e49\u6240\u6709\u7684Bean\uff0c\u800c\u662f\u53ef\u4ee5\u4f7f\u7528\u6846\u67b6\u63d0\u4f9b\u7684\u6ce8\u89e3\u548cXML\u547d\u540d\u7a7a\u95f4\u6765\u5b9a\u4e49\u6240\u9700\u7684Bean\uff0c\u6765\u8f85\u52a9\u63d0\u4f9b\u7684Bean\u5b9a\u4e49\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u867d\u7136Bean\u672c\u8eab\u5df2\u7ecf\u63d0\u4f9b\u4e86\u4e3a\u4e86\u5b9a\u5236\u5176\u64cd\u4f5c\u800c\u8bbe\u7f6e\u7684\u5c5e\u6027\uff0c\u4f46\u6709\u65f6\u65e0\u6cd5\u901a\u8fc7\u6ce8\u89e3\u548cXML\u5c5e\u6027\u6765\u6539\u53d8\u5c5e\u6027\u7684\u503c\u3002\u5982\u679c\u60f3\u8981\u5b9a\u5236\u8fd9\u6837\u7684Bean\u5c5e\u6027\uff0c\u6211\u8ba4\u4e3a\u53ef\u4ee5\u7b80\u5355\u5730\u4f7f\u7528PropertyOverrideConfigurer\u6765\u5b9e\u73b0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
                  Spring Boot\u63d0\u4f9b\u4e86\u4e00\u79cd\u540d\u4e3a\u201cType-safe Configuration Properties\u201d\u7684 […]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-40446","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n\u4f7f\u7528PropertyOverrideConfigurer\u6765\u5c06\u5916\u90e8\u914d\u7f6e\u7684\u5c5e\u6027\u503c\u8bbe\u7f6e\uff08\u8986\u76d6\uff09\u5230Bean\u4e2d - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528propertyoverrideconfigurer\u6765\u5c06\u5916\u90e8\u914d\u7f6e\u7684\u5c5e\u6027\u503c\u8bbe\u7f6e\uff08\u8986\u76d6\uff09\u5230bea\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u4f7f\u7528PropertyOverrideConfigurer\u6765\u5c06\u5916\u90e8\u914d\u7f6e\u7684\u5c5e\u6027\u503c\u8bbe\u7f6e\uff08\u8986\u76d6\uff09\u5230Bean\u4e2d\" \/>\n<meta property=\"og:description\" content=\"Spring Boot\u63d0\u4f9b\u4e86\u4e00\u79cd\u540d\u4e3a\u201cType-safe Configuration Properties\u201d\u7684 […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528propertyoverrideconfigurer\u6765\u5c06\u5916\u90e8\u914d\u7f6e\u7684\u5c5e\u6027\u503c\u8bbe\u7f6e\uff08\u8986\u76d6\uff09\u5230bea\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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