{"id":521,"date":"2021-09-22T14:27:38","date_gmt":"2021-09-22T06:27:38","guid":{"rendered":"https:\/\/explause.com\/?p=521"},"modified":"2021-09-22T14:34:27","modified_gmt":"2021-09-22T06:34:27","slug":"bean%e6%80%bb%e8%a7%88","status":"publish","type":"post","link":"https:\/\/devdoge.org\/?p=521","title":{"rendered":"Bean\u603b\u89c8"},"content":{"rendered":"\n

\u5728\u5bb9\u5668\u91cc\u9762\uff0cbean\u5b9a\u4e49\u8868\u793a\u4e3aBeanDefinition\u5bf9\u8c61\uff0c\u5305\u542b\u4e0b\u5217\u5143\u6570\u636e\uff1a<\/p>\n\n\n\n

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bean\u884c\u4e3a\u914d\u7f6e\u5143\u7d20\uff0c\u8868\u793abean\u5728\u5bb9\u5668\u91cc\u9762\u7684\u884c\u4e3a\uff08\u4f5c\u7528\u57df\u3001\u751f\u547d\u5468\u671f\u7b49\uff09\u3002<\/td><\/tr>
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bean\u5b9a\u4e49\u5c5e\u6027\uff1a<\/p>\n\n\n\n

Class<\/td><\/tr>
Name<\/td><\/tr>
Scope<\/td><\/tr>
Constructor arguments<\/td><\/tr>
Properties<\/td><\/tr>
Autowiring mode<\/td><\/tr>
Lazy initialization mode<\/td><\/tr>
Initialization method<\/td><\/tr>
Destruction method<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Bean\u547d\u540d\uff1a<\/strong><\/p>\n\n\n\n

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id\u5c5e\u6027\u53ea\u80fd\u58f0\u660e\u4e00\u4e2a\uff0c\u4e0d\u53ef\u540c\u540d\u3002<\/p>\n\n\n\n

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id\u548cname\u4e0d\u5f3a\u5236\u8981\u6c42\u63d0\u4f9b\uff0c\u5982\u679c\u4e0d\u63d0\u4f9b\uff0c\u5bb9\u5668\u5c31\u751f\u6210\u4e00\u4e2a\u4e0d\u4f1a\u91cd\u590d\u7684\u540d\u5b57\u7ed9\u8fd9\u4e2abean\u3002<\/p>\n\n\n\n

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\u5728bean\u5b9a\u4e49\u5916\u7684\u522b\u540d\uff0c\u4f7f\u7528alias\u5143\u7d20\uff1a<\/p>\n\n\n\n

<beans>\n<alias name=\"fromName\" alias=\"toName\"\/>\n<\/beans><\/code><\/pre>\n\n\n\n
\u5b9e\u4f8b\u5316Bean\uff1a<\/em><\/strong><\/p>\n\n\n\n
bean\u5143\u7d20\u7684class\u5c5e\u6027\uff0c<\/p>\n\n\n\n
\u53ef\u4ee5\u901a\u8fc7\u4e24\u79cd\u65b9\u6cd5\u4e2d\u7684\u4e00\u79cd\u4f7f\u7528class\u5c5e\u6027\uff1a<\/p>\n\n\n\n
\u5bb9\u5668\u901a\u8fc7\u53cd\u5c04\u8c03\u7528bean\u7684\u6784\u9020\u5668\u5b9e\u4f8b\u5316\uff0c\u7b49\u4ef7\u4e8enew\u64cd\u4f5c\u7b26\uff1b<\/td><\/tr>
\u6bd4\u8f83\u5c11\u7528\u7684\u4f8b\u5b50\u662f\u5bb9\u5668\u53ef\u4ee5\u8c03\u7528\u7c7b\u7684\u9759\u6001\u5de5\u5382\u65b9\u6cd5\u6765\u751f\u6210bean\uff1b<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\u5d4c\u5957\u7c7b\u540d\uff1a\u901a\u8fc7\u7f8e\u5143\u7b26\u53f7($)\u6216\u8005\u70b9\u53f7(.)\u6765\u5206\u9694\u3002<\/strong><\/p>\n\n\n\n
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<bean id=\"exampleBean\" class=\"examples.ExampleBean\"\/>\n<bean name=\"anotherExample\" class=\"examples.ExampleBeanTwo\"\/><\/code><\/pre>\n\n\n\n
\u901a\u8fc7\u7c7b\u7684\u9759\u6001\u5de5\u5382\u65b9\u6cd5\u5b9e\u4f8b\u5316\uff1a<\/p>\n\n\n\n
<bean id=\"clientService\"\n    class=\"examples.ClientService\"\n    factory-method=\"createInstance\"\/><\/code><\/pre>\n\n\n\n
\u901a\u8fc7\u4e00\u4e2a\u540d\u53ebfactory-method\u7684\u5c5e\u6027\u6765\u58f0\u660e\u5de5\u5382\u65b9\u6cd5\u3002<\/p>\n\n\n\n
\u901a\u8fc7\u522b\u7684bean\u5b9e\u4f8b\u7684\u5de5\u5382\u65b9\u6cd5\uff1a<\/p>\n\n\n\n
<bean id=\"serviceLocator\" class=\"examples.DefaultServiceLocator\"\/>\n<!-- \u4f7f\u7528serviceLocator\u7684\u65b9\u6cd5\u521b\u5efa\u7684bean -->\n<bean id=\"clientService\"\n    factory-bean=\"serviceLocator\"\n    factory-method=\"createClientServiceInstance\"\/><\/code><\/pre>\n\n\n\n
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\u5728Spring\u6587\u6863\u91cc\uff0cfactory bean<\/strong>\u610f\u601d\u662f\u4e00\u79cdbean\uff0c\u901a\u8fc7\u5b9e\u4f8b\u6216\u8005\u9759\u6001\u65b9\u6cd5\u521b\u5efa\u5bf9\u8c61\u3002
FactoryBean<\/strong>\u5219\u662f\u5b9e\u73b0\u4e86FactoryBean<\/strong>\u63a5\u53e3\u7684bean\u3002<\/p>\n\n\n\n
\u786e\u5b9abean\u7684\u8fd0\u884c\u65f6\u7c7b\u578b\uff1a<\/em><\/strong><\/p>\n\n\n\n
\u5efa\u8bae\u901a\u8fc7BeanFactory.getType()\u8c03\u7528\u6765\u786e\u5b9a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
Spring\u6846\u67b6\u5185\u5404\u79cd\u7ec4\u4ef6\u7684\u8868\u793a\u65b9\u5f0f<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[28],"class_list":["post-521","post","type-post","status-publish","format-standard","hentry","category-ioc","tag-ioc"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":6}},"_links":{"self":[{"href":"https:\/\/devdoge.org\/index.php?rest_route=\/wp\/v2\/posts\/521","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/devdoge.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/devdoge.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/devdoge.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/devdoge.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=521"}],"version-history":[{"count":2,"href":"https:\/\/devdoge.org\/index.php?rest_route=\/wp\/v2\/posts\/521\/revisions"}],"predecessor-version":[{"id":528,"href":"https:\/\/devdoge.org\/index.php?rest_route=\/wp\/v2\/posts\/521\/revisions\/528"}],"wp:attachment":[{"href":"https:\/\/devdoge.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=521"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/devdoge.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=521"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/devdoge.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=521"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}