{"id":11608,"date":"2023-11-28T22:27:47","date_gmt":"2023-11-28T14:27:47","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=11608"},"modified":"2023-12-11T11:40:15","modified_gmt":"2023-12-11T03:40:15","slug":"spring-zhong-gou-zao-qi-zhu-ru-hesetter-zhu-ru-le","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/spring-zhong-gou-zao-qi-zhu-ru-hesetter-zhu-ru-le\/","title":{"rendered":"Spring\u4e2d\u6784\u9020\u5668\u6ce8\u5165\u548cSetter\u6ce8\u5165\u4e86\u89e3\u5417\uff1f"},"content":{"rendered":"<p>\u5728Spring\u4e2d\uff0c\u4f9d\u8d56\u6ce8\u5165\uff08Dependency Injection\uff09\u662f\u901a\u8fc7\u6784\u9020\u5668\u6ce8\u5165\u548cSetter\u6ce8\u5165\u4e24\u79cd\u4e3b\u8981\u65b9\u5f0f\u6765\u5b9e\u73b0\u7684\u3002<\/p>\n<h3><a id=\"1%E6%9E%84%E9%80%A0%E5%99%A8%E6%B3%A8%E5%85%A5%EF%BC%88-constructor-injection%EF%BC%89%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>1. \u6784\u9020\u5668\u6ce8\u5165\uff08Constructor Injection\uff09\uff1a<\/h3>\n<p>\u6784\u9020\u5668\u6ce8\u5165\u662f\u901a\u8fc7\u7c7b\u7684\u6784\u9020\u65b9\u6cd5\u6765\u6ce8\u5165\u4f9d\u8d56\u7684\u65b9\u5f0f\u3002\u5728\u8fd9\u79cd\u65b9\u5f0f\u4e0b\uff0c\u4f9d\u8d56\u5173\u7cfb\u901a\u8fc7\u6784\u9020\u65b9\u6cd5\u7684\u53c2\u6570\u4f20\u9012\u3002Spring\u5bb9\u5668\u5728\u521b\u5efaBean\u7684\u5b9e\u4f8b\u65f6\uff0c\u901a\u8fc7\u6784\u9020\u65b9\u6cd5\u6ce8\u5165\u6240\u9700\u7684\u4f9d\u8d56\u3002<\/p>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre><code class=\"language-java\">public class MyService {\n    private MyDependency myDependency;\n\n    \/\/ \u6784\u9020\u5668\u6ce8\u5165\n    public MyService(MyDependency myDependency) {\n        this.myDependency = myDependency;\n    }\n}\n\npublic class MyDependency {\n    \/\/ ...\n}\n<\/code><\/pre>\n<p>\u5728XML\u914d\u7f6e\u6587\u4ef6\u4e2d\uff0c\u6784\u9020\u5668\u6ce8\u5165\u7684\u914d\u7f6e\u65b9\u5f0f\u4e3a\uff1a<\/p>\n<pre><code class=\"language-xml\">&lt;bean id=&quot;myDependency&quot; class=&quot;com.example.MyDependency&quot; \/&gt;\n\n&lt;bean id=&quot;myService&quot; class=&quot;com.example.MyService&quot;&gt;\n    &lt;constructor-arg ref=&quot;myDependency&quot; \/&gt;\n&lt;\/bean&gt;\n<\/code><\/pre>\n<h3><a id=\"2-setter%E6%B3%A8%E5%85%A5%EF%BC%88setter-injection%EF%BC%89%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>2. Setter\u6ce8\u5165\uff08Setter Injection\uff09\uff1a<\/h3>\n<p>Setter\u6ce8\u5165\u662f\u901a\u8fc7\u7c7b\u7684Setter\u65b9\u6cd5\u6765\u6ce8\u5165\u4f9d\u8d56\u7684\u65b9\u5f0f\u3002\u5728\u8fd9\u79cd\u65b9\u5f0f\u4e0b\uff0c\u4f9d\u8d56\u5173\u7cfb\u901a\u8fc7Setter\u65b9\u6cd5\u8fdb\u884c\u6ce8\u5165\u3002Spring\u5bb9\u5668\u5728\u521b\u5efaBean\u7684\u5b9e\u4f8b\u540e\uff0c\u8c03\u7528\u76f8\u5e94\u7684Setter\u65b9\u6cd5\u4e3a\u5c5e\u6027\u6ce8\u5165\u503c\u3002<\/p>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre><code class=\"language-java\">public class MyService {\n    private MyDependency myDependency;\n\n    \/\/ Setter\u6ce8\u5165\n    public void setMyDependency(MyDependency myDependency) {\n        this.myDependency = myDependency;\n    }\n}\n\npublic class MyDependency {\n    \/\/ ...\n}\n<\/code><\/pre>\n<p>\u5728XML\u914d\u7f6e\u6587\u4ef6\u4e2d\uff0cSetter\u6ce8\u5165\u7684\u914d\u7f6e\u65b9\u5f0f\u4e3a\uff1a<\/p>\n<pre><code class=\"language-xml\">&lt;bean id=&quot;myDependency&quot; class=&quot;com.example.MyDependency&quot; \/&gt;\n\n&lt;bean id=&quot;myService&quot; class=&quot;com.example.MyService&quot;&gt;\n    &lt;property name=&quot;myDependency&quot; ref=&quot;myDependency&quot; \/&gt;\n&lt;\/bean&gt;\n<\/code><\/pre>\n<h3><a id=\"%E9%80%89%E6%8B%A9%E6%9E%84%E9%80%A0%E5%99%A8%E6%B3%A8%E5%85%A5%E8%BF%98%E6%98%AFsetter%E6%B3%A8%E5%85%A5%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>\u9009\u62e9\u6784\u9020\u5668\u6ce8\u5165\u8fd8\u662fSetter\u6ce8\u5165\uff1a<\/h3>\n<ol>\n<li>\n<strong>\u6784\u9020\u5668\u6ce8\u5165\u7684\u4f18\u52bf\uff1a<\/strong><\/p>\n<ul>\n<li>\u6784\u9020\u5668\u6ce8\u5165\u80fd\u591f\u786e\u4fdd\u5bf9\u8c61\u88ab\u521b\u5efa\u540e\u5c31\u80fd\u591f\u4f7f\u7528\uff0c\u907f\u514d\u4e86\u521b\u5efa\u540e\u7684\u72b6\u6001\u4e0d\u4e00\u81f4\u3002<\/li>\n<li>\u6784\u9020\u5668\u6ce8\u5165\u4f7f\u5f97\u5bf9\u8c61\u7684\u4f9d\u8d56\u5173\u7cfb\u5728\u521b\u5efa\u65f6\u5c31\u88ab\u660e\u786e\u6307\u5b9a\uff0c\u589e\u5f3a\u4e86\u5bf9\u8c61\u7684\u4e0d\u53ef\u53d8\u6027\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<strong>Setter\u6ce8\u5165\u7684\u4f18\u52bf\uff1a<\/strong><\/p>\n<ul>\n<li>Setter\u6ce8\u5165\u5141\u8bb8\u5728\u5bf9\u8c61\u521b\u5efa\u540e\uff0c\u901a\u8fc7Setter\u65b9\u6cd5\u52a8\u6001\u6ce8\u5165\u4f9d\u8d56\uff0c\u9002\u7528\u4e8e\u53ef\u53d8\u7684\u4f9d\u8d56\u5173\u7cfb\u3002<\/li>\n<li>Setter\u6ce8\u5165\u5bf9\u4e8e\u90a3\u4e9b\u53ef\u9009\u7684\u6216\u8005\u662f\u53ef\u53d8\u7684\u4f9d\u8d56\u5173\u7cfb\u66f4\u52a0\u7075\u6d3b\uff0c\u907f\u514d\u4e86\u5728\u6784\u9020\u5668\u4e2d\u6dfb\u52a0\u5927\u91cf\u53c2\u6570\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p>\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u6839\u636e\u5b9e\u9645\u9700\u6c42\u9009\u62e9\u6784\u9020\u5668\u6ce8\u5165\u8fd8\u662fSetter\u6ce8\u5165\uff0c\u6216\u8005\u4e24\u8005\u7ed3\u5408\u4f7f\u7528\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728Spring\u4e2d\uff0c\u4f9d\u8d56\u6ce8\u5165\uff08Dependency Injection\uff09\u662f\u901a\u8fc7\u6784\u9020\u5668\u6ce8\u5165\u548cSetter\u6ce8\u5165\u4e24\u79cd\u4e3b [&hellip;]<\/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-11608","post","type-post","status-publish","format-standard","hentry","category-spring"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11608","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=11608"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11608\/revisions"}],"predecessor-version":[{"id":17093,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11608\/revisions\/17093"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=11608"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=11608"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=11608"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}