{"id":12019,"date":"2023-11-28T22:40:32","date_gmt":"2023-11-28T14:40:32","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=12019"},"modified":"2023-12-11T15:00:21","modified_gmt":"2023-12-11T07:00:21","slug":"spring-zhongrequired-zhu-jie-you-shen-me-yong-2","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/spring-zhongrequired-zhu-jie-you-shen-me-yong-2\/","title":{"rendered":"Spring\u4e2d@Required\u6ce8\u89e3\u6709\u4ec0\u4e48\u7528\uff1f"},"content":{"rendered":"<p>\u5728Spring\u6846\u67b6\u4e2d\uff0c<code>@Required<\/code> \u6ce8\u89e3\u7528\u4e8e\u6807\u8bb0Bean\u7684\u5c5e\u6027\uff0c\u6307\u793a\u5728\u88c5\u914d\uff08\u6216\u521d\u59cb\u5316\uff09Bean\u65f6\uff0c\u88ab\u6ce8\u89e3\u7684\u5c5e\u6027\u5fc5\u987b\u5728\u914d\u7f6e\u4e2d\u6307\u5b9a\uff0c\u5426\u5219\u5c06\u629b\u51fa <code>BeanInitializationException<\/code> \u5f02\u5e38\u3002\u8fd9\u4e2a\u6ce8\u89e3\u4e3b\u8981\u7528\u4e8e\u5f3a\u5236\u8981\u6c42\u5728\u914d\u7f6e\u6587\u4ef6\u4e2d\u8bbe\u7f6e\u7279\u5b9a\u7684\u5c5e\u6027\uff0c\u4ee5\u786e\u4fdd\u5728\u521b\u5efaBean\u65f6\u8fd9\u4e9b\u5c5e\u6027\u7684\u503c\u662f\u6709\u6548\u7684\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u4f7f\u7528 <code>@Required<\/code> \u6ce8\u89e3\u7684\u57fa\u672c\u793a\u4f8b\uff1a<\/p>\n<pre><code class=\"language-java\">public class MyBean {\n\n    private String requiredProperty;\n\n    @Required\n    public void setRequiredProperty(String requiredProperty) {\n        this.requiredProperty = requiredProperty;\n    }\n\n    \/\/ other methods...\n}\n<\/code><\/pre>\n<p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c<code>setRequiredProperty<\/code> \u65b9\u6cd5\u88ab <code>@Required<\/code> \u6ce8\u89e3\u6807\u8bb0\uff0c\u8868\u660e\u5728\u521d\u59cb\u5316 <code>MyBean<\/code> \u5b9e\u4f8b\u65f6\uff0c<code>requiredProperty<\/code> \u5c5e\u6027\u5fc5\u987b\u5728\u914d\u7f6e\u4e2d\u8bbe\u7f6e\u3002\u5982\u679c\u6ca1\u6709\u8bbe\u7f6e\uff0cSpring\u5c06\u629b\u51fa <code>BeanInitializationException<\/code> \u5f02\u5e38\u3002<\/p>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c<code>@Required<\/code> \u6ce8\u89e3\u5728Spring 5.1\u7248\u672c\u4e4b\u540e\u5df2\u7ecf\u88ab\u6807\u8bb0\u4e3a\u8fc7\u65f6\uff08deprecated\uff09\u3002\u5728\u65b0\u7684\u4ee3\u7801\u4e2d\uff0c\u5efa\u8bae\u4f7f\u7528Java\u914d\u7f6e\u6216XML\u914d\u7f6e\u4e2d\u7684 <code>required<\/code> \u5c5e\u6027\u6765\u8fbe\u5230\u76f8\u540c\u7684\u6548\u679c\u3002\u4f8b\u5982\uff0c\u5728XML\u914d\u7f6e\u4e2d\u53ef\u4ee5\u8fd9\u6837\u4f7f\u7528\uff1a<\/p>\n<pre><code class=\"language-xml\">&lt;bean id=&quot;myBean&quot; class=&quot;com.example.MyBean&quot;&gt;\n    &lt;property name=&quot;requiredProperty&quot; value=&quot;someValue&quot; \/&gt;\n&lt;\/bean&gt;\n<\/code><\/pre>\n<p>\u6216\u8005\u5728Java\u914d\u7f6e\u4e2d\uff1a<\/p>\n<pre><code class=\"language-java\">@Configuration\npublic class AppConfig {\n\n    @Bean\n    public MyBean myBean() {\n        MyBean bean = new MyBean();\n        bean.setRequiredProperty(&quot;someValue&quot;);\n        return bean;\n    }\n}\n<\/code><\/pre>\n<p>\u8fd9\u6837\u7684\u914d\u7f6e\u65b9\u5f0f\u66f4\u52a0\u76f4\u89c2\uff0c\u5e76\u4e14\u80fd\u591f\u63d0\u4f9b\u66f4\u597d\u7684\u7c7b\u578b\u5b89\u5168\u6027\u3002\u56e0\u6b64\uff0c\u867d\u7136 <code>@Required<\/code> \u6ce8\u89e3\u4ecd\u7136\u6709\u6548\uff0c\u4f46\u662f\u5728\u65b0\u7684\u4ee3\u7801\u4e2d\u66f4\u63a8\u8350\u4f7f\u7528\u5176\u4ed6\u914d\u7f6e\u65b9\u5f0f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728Spring\u6846\u67b6\u4e2d\uff0c@Required \u6ce8\u89e3\u7528\u4e8e\u6807\u8bb0Bean\u7684\u5c5e\u6027\uff0c\u6307\u793a\u5728\u88c5\u914d\uff08\u6216\u521d\u59cb\u5316\uff09Bean\u65f6\uff0c\u88ab\u6ce8\u89e3 [&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-12019","post","type-post","status-publish","format-standard","hentry","category-spring"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12019","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=12019"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12019\/revisions"}],"predecessor-version":[{"id":43619,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12019\/revisions\/43619"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=12019"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=12019"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=12019"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}