{"id":1389,"date":"2024-01-30T00:28:58","date_gmt":"2024-01-29T16:28:58","guid":{"rendered":"http:\/\/zyg.luchers.cn\/?p=1389"},"modified":"2024-01-30T00:33:56","modified_gmt":"2024-01-29T16:33:56","slug":"springioc%e5%ae%b9%e5%99%a8%e4%b9%8b%e5%9f%ba%e4%ba%8exml%e7%ae%a1%e7%90%86bean%ef%bc%88%e5%ae%9e%e9%aa%8c%e4%b8%80%ef%bc%89","status":"publish","type":"post","link":"http:\/\/zyg.luchers.cn\/index.php\/2024\/01\/30\/springioc%e5%ae%b9%e5%99%a8%e4%b9%8b%e5%9f%ba%e4%ba%8exml%e7%ae%a1%e7%90%86bean%ef%bc%88%e5%ae%9e%e9%aa%8c%e4%b8%80%ef%bc%89\/","title":{"rendered":"springIoC\u5bb9\u5668\u4e4b\u57fa\u4e8eXML\u7ba1\u7406Bean\uff08\u5b9e\u9a8c\u4e00\uff09"},"content":{"rendered":"

\u5b9e\u9a8c\u4e00\uff1a\u83b7\u53d6bean<\/h4>\n

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@Test\npublic void testHelloWorld1(){\n    ApplicationContext ac = new ClassPathXmlApplicationContext("beans.xml");\n    HelloWorld bean = ac.getBean(HelloWorld.class);\n    bean.sayHello();\n}<\/code><\/pre>\n
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@Test\npublic void testHelloWorld2(){\n    ApplicationContext ac = new ClassPathXmlApplicationContext("beans.xml");\n    HelloWorld bean = ac.getBean("helloworld", HelloWorld.class);\n    bean.sayHello();\n}<\/code><\/pre>\n
\u2463\u6ce8\u610f\u7684\u5730\u65b9<\/h5>\n
\u5f53\u6839\u636e\u7c7b\u578b\u83b7\u53d6bean\u65f6\uff0c\u8981\u6c42IOC\u5bb9\u5668\u4e2d\u6307\u5b9a\u7c7b\u578b\u7684bean\u6709\u4e14\u53ea\u80fd\u6709\u4e00\u4e2a<\/p>\n
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<bean id="helloworldOne" class="com.atguigu.spring6.bean.HelloWorld"><\/bean>\n<bean id="helloworldTwo" class="com.atguigu.spring6.bean.HelloWorld"><\/bean><\/code><\/pre>\n
\u6839\u636e\u7c7b\u578b\u83b7\u53d6\u65f6\u4f1a\u629b\u51fa\u5f02\u5e38\uff1a<\/p>\n
\n
org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type 'com.atguigu.spring6.bean.HelloWorld' available: expected single matching bean but found 2: helloworldOne,helloworldTwo<\/p>\n<\/blockquote>\n
\u2464\u6269\u5c55\u77e5\u8bc6<\/h5>\n
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\n
\u53ef\u4ee5\uff0c\u524d\u63d0\u662fbean\u552f\u4e00<\/p>\n<\/blockquote>\n
\u5982\u679c\u4e00\u4e2a\u63a5\u53e3\u6709\u591a\u4e2a\u5b9e\u73b0\u7c7b\uff0c\u8fd9\u4e9b\u5b9e\u73b0\u7c7b\u90fd\u914d\u7f6e\u4e86 bean\uff0c\u6839\u636e\u63a5\u53e3\u7c7b\u578b\u53ef\u4ee5\u83b7\u53d6 bean \u5417\uff1f<\/p>\n
\n
\u4e0d\u884c\uff0c\u56e0\u4e3abean\u4e0d\u552f\u4e00<\/p>\n<\/blockquote>\n
\u7ed3\u8bba<\/strong><\/p>\n
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java\u4e2d\uff0cinstanceof\u8fd0\u7b97\u7b26\u7528\u4e8e\u5224\u65ad\u524d\u9762\u7684\u5bf9\u8c61\u662f\u5426\u662f\u540e\u9762\u7684\u7c7b\uff0c\u6216\u5176\u5b50\u7c7b\u3001\u5b9e\u73b0\u7c7b\u7684\u5b9e\u4f8b\u3002\u5982\u679c\u662f\u8fd4\u56detrue\uff0c\u5426\u5219\u8fd4\u56defalse\u3002\u4e5f\u5c31\u662f\u8bf4\uff1a\u7528instanceof\u5173\u952e\u5b57\u505a\u5224\u65ad\u65f6\uff0c instanceof \u64cd\u4f5c\u7b26\u7684\u5de6\u53f3\u64cd\u4f5c\u5fc5\u987b\u6709\u7ee7\u627f\u6216\u5b9e\u73b0\u5173\u7cfb<\/p>\n","protected":false},"excerpt":{"rendered":"
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