{"id":1829,"date":"2025-05-11T15:15:37","date_gmt":"2025-05-11T07:15:37","guid":{"rendered":"https:\/\/note.ui11.cc\/?p=1829"},"modified":"2025-05-11T15:39:19","modified_gmt":"2025-05-11T07:39:19","slug":"%e9%9a%8f%e5%bf%83%e8%ae%b0","status":"publish","type":"post","link":"https:\/\/note.ui11.cc\/index.php\/2025\/05\/11\/%e9%9a%8f%e5%bf%83%e8%ae%b0\/","title":{"rendered":"\u968f\u5fc3\u8bb0"},"content":{"rendered":"\n<p>\u88ab@Bean\u6807\u6ce8\u7684\u65b9\u6cd5\u662f\u600e\u4e48\u88ab\u6ce8\u518c\u4e3a\u4e00\u4e2abean\u7684<\/p>\n\n\n\n<p>\u5728 Spring \u6846\u67b6\u4e2d\uff0c\u88ab<code>@Bean<\/code>\u6807\u6ce8\u7684\u65b9\u6cd5\u4f1a\u901a\u8fc7\u4ee5\u4e0b\u6d41\u7a0b\u88ab\u6ce8\u518c\u4e3a\u5bb9\u5668\u4e2d\u7684 bean\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u914d\u7f6e\u7c7b\u89e3\u6790\u9636\u6bb5<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>ConfigurationClassPostProcessor<\/strong>\uff1aSpring \u7684<code>BeanFactoryPostProcessor<\/code>\u4f1a\u626b\u63cf\u6240\u6709\u5e26\u6709<code>@Configuration<\/code>\u6216<code>@Component<\/code>\u6ce8\u89e3\u7684\u7c7b<\/li>\n\n\n\n<li><strong>\u65b9\u6cd5\u89e3\u6790<\/strong>\uff1a\u8bc6\u522b\u8fd9\u4e9b\u7c7b\u4e2d\u6240\u6709\u88ab<code>@Bean<\/code>\u6807\u6ce8\u7684\u65b9\u6cd5\uff0c\u5e76\u63d0\u53d6\u5143\u6570\u636e\uff08\u5982\u65b9\u6cd5\u540d\u3001\u8fd4\u56de\u7c7b\u578b\u3001\u4f5c\u7528\u57df\u7b49\uff09<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2. BeanDefinition \u6ce8\u518c\u9636\u6bb5<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>BeanDefinition<\/strong>\uff1a\u4e3a\u6bcf\u4e2a<code>@Bean<\/code>\u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a<code>RootBeanDefinition<\/code>\u6216<code>ConfigurationClassBeanDefinition<\/code><\/li>\n\n\n\n<li><strong>\u6ce8\u518c\u5230\u5bb9\u5668<\/strong>\uff1a\u8fd9\u4e9b<code>BeanDefinition<\/code>\u4f1a\u88ab\u6ce8\u518c\u5230<code>BeanFactory<\/code>\u7684<code>beanDefinitionMap<\/code>\u4e2d\uff0c\u952e\u4e3a bean \u540d\u79f0\uff08\u9ed8\u8ba4\u662f\u65b9\u6cd5\u540d\uff09<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3. \u5b9e\u4f8b\u5316\u4e0e\u4f9d\u8d56\u6ce8\u5165\u9636\u6bb5<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5ef6\u8fdf\u5b9e\u4f8b\u5316<\/strong>\uff1a\u5927\u591a\u6570 bean \u662f\u5728\u9996\u6b21\u88ab\u4f9d\u8d56\u65f6\u624d\u4f1a\u5b9e\u4f8b\u5316\uff08\u5355\u4f8b bean 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class=\"wp-block-heading\">2.&nbsp;<strong>\u89e3\u51b3\u540d\u79f0\u51b2\u7a81<\/strong><\/h3>\n\n\n\n<p>\u5f53\u591a\u4e2a<code>@Bean<\/code>\u65b9\u6cd5\u8fd4\u56de\u76f8\u540c\u7c7b\u578b\u7684 bean \u65f6\uff0c\u5fc5\u987b\u901a\u8fc7\u540d\u79f0\u533a\u5206\u5b83\u4eec\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@Configuration\npublic class DataSourceConfig {\n    @Bean(name = \"primaryDataSource\")\n    public DataSource mysqlDataSource() { ... }\n\n    @Bean(name = \"secondaryDataSource\")\n    public DataSource oracleDataSource() { ... }\n}<\/code><\/pre>\n\n\n\n<p>\u6b64\u65f6\uff0c\u53ef\u901a\u8fc7\u540d\u79f0\u6ce8\u5165\u7279\u5b9a\u7684 bean\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@Autowired\n@Qualifier(\"primaryDataSource\")  \/\/ \u6307\u5b9a\u540d\u79f0\nprivate DataSource dataSource;<\/code><\/pre>\n\n\n\n<p>\u5728 Spring 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[&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-1829","post","type-post","status-publish","format-standard","hentry","category-javase"],"_links":{"self":[{"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/posts\/1829","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/comments?post=1829"}],"version-history":[{"count":2,"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/posts\/1829\/revisions"}],"predecessor-version":[{"id":1832,"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/posts\/1829\/revisions\/1832"}],"wp:attachment":[{"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/media?parent=1829"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/categories?post=1829"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/tags?post=1829"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}