{"id":12049,"date":"2023-11-28T22:41:22","date_gmt":"2023-11-28T14:41:22","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=12049"},"modified":"2023-12-11T15:06:35","modified_gmt":"2023-12-11T07:06:35","slug":"spring-zhi-chi-bean-scope-ma","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/spring-zhi-chi-bean-scope-ma\/","title":{"rendered":"Spring \u652f\u6301 bean scope \u5417\uff1f"},"content":{"rendered":"

\u662f\u7684\uff0cSpring\u6846\u67b6\u652f\u6301\u5b9a\u4e49Bean\u7684\u4f5c\u7528\u57df\uff08scope\uff09\u3002Bean\u7684\u4f5c\u7528\u57df\u5b9a\u4e49\u4e86\u5728Spring\u5bb9\u5668\u4e2d\u521b\u5efa\u548c\u7ba1\u7406\u7684Bean\u7684\u751f\u547d\u5468\u671f\u548c\u53ef\u89c1\u6027\u8303\u56f4\u3002Spring\u6846\u67b6\u63d0\u4f9b\u4e86\u4ee5\u4e0b\u6807\u51c6\u7684Bean\u4f5c\u7528\u57df\uff1a<\/p>\n

    \n
  1. \nSingleton\uff08\u5355\u4f8b\uff09\uff1a<\/strong><\/p>\n
      \n
    • \u5728\u6574\u4e2aSpring\u5bb9\u5668\u4e2d\uff0c\u53ea\u521b\u5efa\u4e00\u4e2aBean\u5b9e\u4f8b\uff0c\u5e76\u5728\u5bb9\u5668\u7684\u751f\u547d\u5468\u671f\u5185\u91cd\u590d\u4f7f\u7528\u8be5\u5b9e\u4f8b\u3002\u8fd9\u662f\u9ed8\u8ba4\u7684\u4f5c\u7528\u57df\u3002<\/li>\n<\/ul>\n
      <bean id="myBean" class="com.example.MyBean" scope="singleton" \/>\n<\/code><\/pre>\n<\/li>\n
    • \nPrototype\uff08\u539f\u578b\uff09\uff1a<\/strong><\/p>\n
        \n
      • \u6bcf\u6b21\u4ece\u5bb9\u5668\u4e2d\u8bf7\u6c42\u8be5Bean\u65f6\uff0c\u90fd\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5b9e\u4f8b\u3002\u6bcf\u4e2a\u5b9e\u4f8b\u90fd\u662f\u72ec\u7acb\u7684\u3002<\/li>\n<\/ul>\n
        <bean id="myBean" class="com.example.MyBean" scope="prototype" \/>\n<\/code><\/pre>\n<\/li>\n
      • \nRequest\uff08\u8bf7\u6c42\uff09\uff1a<\/strong><\/p>\n
          \n
        • \u5728\u6bcf\u6b21HTTP\u8bf7\u6c42\u4e2d\uff0c\u90fd\u521b\u5efa\u4e00\u4e2a\u65b0\u7684Bean\u5b9e\u4f8b\u3002\u4ec5\u5728Web\u5e94\u7528\u4e2d\u6709\u6548\uff0c\u9700\u8981\u5728Spring\u7684WebApplicationContext\u73af\u5883\u4e2d\u4f7f\u7528\u3002<\/li>\n<\/ul>\n
          <bean id="myBean" class="com.example.MyBean" scope="request" \/>\n<\/code><\/pre>\n<\/li>\n
        • \nSession\uff08\u4f1a\u8bdd\uff09\uff1a<\/strong><\/p>\n
            \n
          • \u5728\u6bcf\u4e2aHTTP\u4f1a\u8bdd\u4e2d\uff0c\u90fd\u521b\u5efa\u4e00\u4e2a\u65b0\u7684Bean\u5b9e\u4f8b\u3002\u540c\u6837\uff0c\u4ec5\u5728Web\u5e94\u7528\u4e2d\u6709\u6548\uff0c\u9700\u8981\u5728Spring\u7684WebApplicationContext\u73af\u5883\u4e2d\u4f7f\u7528\u3002<\/li>\n<\/ul>\n
            <bean id="myBean" class="com.example.MyBean" scope="session" \/>\n<\/code><\/pre>\n<\/li>\n
          • \nGlobal Session\uff08\u5168\u5c40\u4f1a\u8bdd\uff09\uff1a<\/strong><\/p>\n
              \n
            • \u5728\u5168\u5c40HTTP\u4f1a\u8bdd\u4e2d\uff0c\u521b\u5efa\u4e00\u4e2a\u65b0\u7684Bean\u5b9e\u4f8b\u3002\u540c\u6837\uff0c\u4ec5\u5728Web\u5e94\u7528\u4e2d\u6709\u6548\uff0c\u9700\u8981\u5728Spring\u7684WebApplicationContext\u73af\u5883\u4e2d\u4f7f\u7528\u3002<\/li>\n<\/ul>\n
              <bean id="myBean" class="com.example.MyBean" scope="globalSession" \/>\n<\/code><\/pre>\n<\/li>\n<\/ol>\n
              \u8fd9\u4e9b\u4f5c\u7528\u57df\u5141\u8bb8\u5f00\u53d1\u8005\u6839\u636e\u5177\u4f53\u9700\u6c42\u63a7\u5236Bean\u7684\u751f\u547d\u5468\u671f\u548c\u53ef\u89c1\u6027\u3002\u9009\u62e9\u9002\u5f53\u7684\u4f5c\u7528\u57df\u6709\u52a9\u4e8e\u4f18\u5316\u5e94\u7528\u7a0b\u5e8f\u6027\u80fd\uff0c\u5e76\u786e\u4fddBean\u7684\u4f7f\u7528\u7b26\u5408\u9884\u671f\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u5982\u679c\u6ca1\u6709\u6307\u5b9a\u4f5c\u7528\u57df\uff0cBean\u5c06\u91c7\u7528Singleton\u4f5c\u7528\u57df\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
              \u662f\u7684\uff0cSpring\u6846\u67b6\u652f\u6301\u5b9a\u4e49Bean\u7684\u4f5c\u7528\u57df\uff08scope\uff09\u3002Bean\u7684\u4f5c\u7528\u57df\u5b9a\u4e49\u4e86\u5728Spring\u5bb9\u5668\u4e2d\u521b\u5efa\u548c […]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[121],"tags":[],"class_list":["post-12049","post","type-post","status-publish","format-standard","hentry","category-spring"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12049","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=12049"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12049\/revisions"}],"predecessor-version":[{"id":45702,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12049\/revisions\/45702"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=12049"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=12049"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=12049"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}