Spring Dependency\u6ce8\u5165<\/h1>\n<\/p><\/div>\n

\u5728Spring\u4e2d\u4f7f\u7528\u5de5\u5382\u65b9\u6cd5\u8fdb\u884c\u4f9d\u8d56\u6ce8\u5165<\/h2>\n

\n Spring\u6846\u67b6\u63d0\u4f9b\u4e86\u4f7f\u7528\u5de5\u5382\u65b9\u6cd5\u6765\u6ce8\u5165bean\u7684\u4fbf\u5229\u3002\u4e3a\u6b64\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528bean\u5143\u7d20\u7684\u4e24\u4e2a\u5c5e\u6027\u3002\n <\/div>\n

factory-method: <\/strong>\u8868\u793a\u5c06\u88ab\u8c03\u7528\u4ee5\u6ce8\u5165bean\u7684\u5de5\u5382\u65b9\u6cd5\u3002<\/span>
\n factory-bean: <\/strong>\u8868\u793a\u5c06\u8c03\u7528\u5de5\u5382\u65b9\u6cd5\u7684bean\u7684\u5f15\u7528\u3002\u5982\u679c\u5de5\u5382\u65b9\u6cd5\u662f\u975e\u9759\u6001\u7684\uff0c\u5219\u4f7f\u7528\u5b83\u3002<\/span> <\/p>\n

\n \u4e00\u79cd\u8fd4\u56de\u7c7b\u5b9e\u4f8b\u7684\u65b9\u6cd5\u79f0\u4e3a
\n factory-method<\/strong>\u3002\n <\/div>\n
\n
\npublic <\/span>class <\/span>A {\npublic <\/span>static <\/span>A getA(){\/\/factory method\n return new <\/span>A();\n}\n}\n<\/pre>\n<\/code>\n <\/div>\n factory-method\u7c7b\u578b<\/h2>\n\n \u53ef\u4ee5\u6709\u4e09\u79cd\u7c7b\u578b\u7684factory-method:\n <\/div>\n\n 1)\u8fd4\u56de\u7684 \n \u9759\u6001\u5de5\u5382\u65b9\u6cd5<\/strong> \n \u81ea\u5df1\u7684<\/strong>\u7c7b\u7684\u5b9e\u4f8b\u3002\u7528\u4e8e\u5355\u4f8b\u8bbe\u8ba1\u6a21\u5f0f\u3002\n <\/div>\n\n\n<bean id=\"a\"<\/span> class=\"com.lidihuo.A\"<\/span> factory-method=\"getA\"<\/span>><\/bean>\n<\/pre>\n<\/code>\n <\/div>\n \n 2)\u4e00\u79cd \n \u9759\u6001\u5de5\u5382\u65b9\u6cd5<\/strong>\uff0c\u5b83\u8fd4\u56de \n \u53e6\u4e00\u4e2a<\/strong>\u7c7b\u7684\u5b9e\u4f8b\u3002\u6240\u4f7f\u7528\u7684\u5b9e\u4f8b\u672a\u77e5\uff0c\u5e76\u5728\u8fd0\u884c\u65f6\u51b3\u5b9a\u3002\n <\/div>\n\n\n<bean id=\"b\"<\/span> class=\"com.lidihuo.A\"<\/span> factory-method=\"getB\"<\/span>><\/bean>\n<\/pre>\n<\/code>\n <\/div>\n \n 3)\u4e00\u79cd \n \u975e\u9759\u6001\u5de5\u5382<\/strong>\u65b9\u6cd5\uff0c\u8be5\u65b9\u6cd5\u8fd4\u56de \n \u53e6\u4e00\u4e2a<\/strong>\u7c7b\u7684\u5b9e\u4f8b\u3002\u6240\u4f7f\u7528\u7684\u5b9e\u4f8b\u672a\u77e5\uff0c\u5e76\u5728\u8fd0\u884c\u65f6\u51b3\u5b9a\u3002\n <\/div>\n\n\n<bean id=\"a\"<\/span><\/span> class=\"com.lidihuo.A\"<\/span><\/span>><\/bean>\n<bean id=\"b\"<\/span> class=\"com.lidihuo.A\" factory-method=\"getB\"<\/span> factory-bean=\"a\"><\/bean>\n<\/pre>\n<\/code>\n <\/div>\n \n\u7c7b\u578b1 <\/h2>\n\n \u8ba9\u6211\u4eec\u770b\u4e00\u4e0b\u7528\u9759\u6001\u5de5\u5382\u65b9\u6cd5\u6ce8\u5165\u4f9d\u8d56\u9879\u7684\u7b80\u5355\u4ee3\u7801\u3002\n <\/div>\n\n\n<bean id=\"a\"<\/span> class=\"com.lidihuo.A\"<\/span> factory-method=\"getA\"<\/span>><\/bean>\n<\/pre>\n<\/code>\n <\/div>\n \n \u8ba9\u6211\u4eec\u770b\u4e00\u4e0b\u5b8c\u6574\u7684\u793a\u4f8b\uff0c\u4ee5\u5728Spring\u4f7f\u7528\u5de5\u5382\u65b9\u6cd5\u6ce8\u5165\u4f9d\u8d56\u9879\u3002\u4e3a\u4e86\u521b\u5efa\u6b64\u793a\u4f8b\uff0c\u6211\u4eec\u521b\u5efa\u4e863\u4e2a\u6587\u4ef6\u3002\n <\/div>\n A.java <\/b> <\/span> \n applicationContext.xml <\/b> <\/span> \n Test.java <\/b> <\/span> <\/p>\n \n A.java <\/strong>\n <\/div>\n\n \u6b64\u7c7b\u662f\u5355\u4f8b\u7c7b\u3002\n <\/div>\n\n\npackage <\/span>com.lidihuo;\npublic <\/span>class <\/span>A {\nprivate <\/span>static <\/span>final <\/span>A obj=new A();\nprivate <\/span>A(){System.out.println<\/span>(\"private <\/span>constructor\"<\/span>);}\npublic <\/span>static <\/span>A getA(){\n System.out.println<\/span>(\"factory method \"<\/span>);\n return <\/span>obj;\n}\npublic void <\/span>msg(){\n System.out.println<\/span>(\"hello user\"<\/span>);\n}\n}\n<\/pre>\n<\/code>\n <\/div>\n \n applicationContext.xml <\/strong>\n <\/div>\n\n\n<?xml version=\"1.0\"<\/span> encoding=\"UTF-8\"<\/span>?>\n<beans\n xmlns=\"http:\/\/www.springframework.org\/schema\/beans\"<\/span>\n xmlns:xsi=\"http:\/\/www.w3.org\/2001\/XMLSchema-instance\"<\/span>\n xmlns:p=\"http:\/\/www.springframework.org\/schema\/p\"<\/span>\n xsi:schemaLocation=\"http:\/\/www.springframework.org\/schema\/beans \nhttp:\/\/www.springframework.org\/schema\/beans\/spring-beans-3.0.xsd\">\n<bean id=\"a\"<\/span> class=\"com.lidihuo.A\"<\/span> factory-method=\"getA\"<\/span>><\/bean>\n<\/beans>\n<\/pre>\n<\/code>\n <\/div>\n \n Test.java <\/strong>\n <\/div>\n\n \u6b64\u7c7b\u4eceapplicationContext.xml\u6587\u4ef6\u83b7\u53d6Bean\u5e76\u8c03\u7528msg\u65b9\u6cd5\u3002\n <\/div>\n\n\npackage <\/span>org.sssit;\nimport org.springframework.context.ApplicationContext;\nimport org.springframework.context.support.ClassPathXmlApplicationContext;\npublic <\/span>class <\/span>Test {\npublic <\/span>static void <\/span>main(String[] args) {\n ApplicationContext context=new ClassPathXmlApplicationContext(\"applicationContext.xml\"<\/span>);\n A a=(A)context.getBean<\/span>(\"a\"<\/span>);\n a.msg<\/span>();\n}\n}\n<\/pre>\n<\/code>\n <\/div>\n \n \u8f93\u51fa:\n <\/div>\n\n\nprivate <\/span>constructor\nfactory method\nhello user\n<\/pre>\n<\/code>\n <\/div>\n \n\u7c7b\u578b2 <\/h2>\n\n \u8ba9\u6211\u4eec\u770b\u4e00\u4e0b\u901a\u8fc7\u9759\u6001\u5de5\u5382\u65b9\u6cd5\u6ce8\u5165\u4f9d\u8d56\u5173\u7cfb\u7684\u7b80\u5355\u4ee3\u7801\uff0c\u8be5\u65b9\u6cd5\u8fd4\u56de\u53e6\u4e00\u4e2a\u7c7b\u7684\u5b9e\u4f8b\u3002\n <\/div>\n\n \u8981\u521b\u5efa\u5728\u6b64\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e866\u4e2a\u6587\u4ef6\u3002\n <\/div>\n Printable.java <\/b> <\/span> \n A.java <\/b> <\/span> \n B.java <\/b> <\/span> \n PrintableFactory.java <\/b> <\/span> \n applicationContext.xml <\/b> <\/span> \n Test.java <\/b> <\/span> <\/p>\n \n Printable.java <\/strong>\n <\/div>\n\n\npackage <\/span>com.lidihuo;\npublic <\/span>interface Printable {\nvoid print();\n}\n<\/pre>\n<\/code>\n <\/div>\n \n A.java <\/strong>\n <\/div>\n\n\npackage <\/span>com.lidihuo;\npublic <\/span>class <\/span>A implements <\/span>Printable{\n @Override\n public void <\/span>print() {\n System.out.println<\/span>(\"hello a\"<\/span>);\n }\n}\n<\/pre>\n<\/code>\n <\/div>\n \n B.java <\/strong>\n <\/div>\n\n\npackage <\/span>com.lidihuo;\npublic <\/span>class <\/span>B implements <\/span>Printable{\n @Override\n public void <\/span>print() {\n System.out.println<\/span>(\"hello b\"<\/span>);\n }\n}\n<\/pre>\n<\/code>\n <\/div>\n \n PrintableFactory.java <\/strong>\n <\/div>\n\n\npackage <\/span>com.lidihuo;\npublic <\/span>class <\/span>PrintableFactory {\npublic <\/span>static <\/span>Printable getPrintable(){\n \/\/return new <\/span>B();\n return new <\/span>A();\/\/return <\/span>any one instance, either A or B\n}\n}\n<\/pre>\n<\/code>\n <\/div>\n \n applicationContext.xml <\/strong>\n <\/div>\n\n\n<?xml version=\"1.0\"<\/span> encoding=\"UTF-8\"<\/span>?>\n<beans\n xmlns=\"http:\/\/www.springframework.org\/schema\/beans\"<\/span>\n xmlns:xsi=\"http:\/\/www.w3.org\/2001\/XMLSchema-instance\"<\/span>\n xmlns:p=\"http:\/\/www.springframework.org\/schema\/p\"<\/span>\n xsi:schemaLocation=\"http:\/\/www.springframework.org\/schema\/beans \nhttp:\/\/www.springframework.org\/schema\/beans\/spring-beans-3.0.xsd\">\n<bean id=\"p\"<\/span> class=\"com.lidihuo.PrintableFactory\"<\/span> factory-method=\"getPrintable\"<\/span>><\/bean>\n<\/beans>\n<\/pre>\n<\/code>\n <\/div>\n \n Test.java <\/strong>\n <\/div>\n\n \u6b64\u7c7b\u4eceapplicationContext.xml\u6587\u4ef6\u83b7\u53d6Bean\u5e76\u8c03\u7528print()\u65b9\u6cd5\u3002\n <\/div>\n\n\npackage <\/span>org.sssit;\nimport org.springframework.context.ApplicationContext;\nimport org.springframework.context.support.ClassPathXmlApplicationContext;\npublic <\/span>class <\/span>Test {\npublic <\/span>static void <\/span>main(String[] args) {\n ApplicationContext context=new ClassPathXmlApplicationContext(\"applicationContext.xml\"<\/span>);\n Printable p=(Printable)context.getBean<\/span>(\"p\"<\/span>);\n p.print<\/span>();\n}\n}\n<\/pre>\n<\/code>\n <\/div>\n \n \u8f93\u51fa:\n <\/div>\n\n\nhello a\n<\/pre>\n<\/code>\n <\/div>\n \n\u7c7b\u578b3 <\/h2>\n\n \u8ba9\u6211\u4eec\u770b\u4e00\u4e0b\u901a\u8fc7\u975e\u9759\u6001\u5de5\u5382\u65b9\u6cd5\u6ce8\u5165\u4f9d\u8d56\u5173\u7cfb\u7684\u793a\u4f8b\uff0c\u8be5\u65b9\u6cd5\u8fd4\u56de\u53e6\u4e00\u4e2a\u7c7b\u7684\u5b9e\u4f8b\u3002\n <\/div>\n\n To\u521b\u5efa\u8fd9\u4e2a\u793a\u4f8b\uff0c\u6211\u4eec\u5df2\u7ecf\u521b\u5efa\u4e866\u4e2a\u6587\u4ef6\u3002\n <\/div>\n Printable.java <\/b> <\/span> \n A.java <\/b> <\/span> \n B.java <\/b> <\/span> \n PrintableFactory.java <\/b> <\/span> \n applicationContext.xml <\/b> <\/span> \n Test.java <\/b> <\/span> <\/p>\n \n \u6240\u6709\u6587\u4ef6\u90fd\u4e0e\u4ee5\u524d\u7684\u6587\u4ef6\u76f8\u540c\uff0c\u60a8\u53ea\u9700\u66f4\u6539\u4e24\u4e2a\u6587\u4ef6: PrintableFactory\u548capplicationContext.xml\u3002\n <\/div>\n\n PrintableFactory.java <\/strong>\n <\/div>\n\n\npackage <\/span>com.lidihuo;\npublic <\/span>class <\/span>PrintableFactory {\n\/\/non-static <\/span>factory method\npublic <\/span>Printable getPrintable(){\n return new <\/span>A();\/\/return <\/span>any one instance, either A or B\n}\n}\n<\/pre>\n<\/code>\n <\/div>\n \n applicationContext.xml <\/strong>\n <\/div>\n\n\n<?xml version=\"1.0\"<\/span> encoding=\"UTF-8\"<\/span>?>\n<beans\n xmlns=\"http:\/\/www.springframework.org\/schema\/beans\"<\/span>\n xmlns:xsi=\"http:\/\/www.w3.org\/2001\/XMLSchema-instance\"<\/span>\n xmlns:p=\"http:\/\/www.springframework.org\/schema\/p\"<\/span>\n xsi:schemaLocation=\"http:\/\/www.springframework.org\/schema\/beans \nhttp:\/\/www.springframework.org\/schema\/beans\/spring-beans-3.0.xsd\">\n<bean id=\"pfactory\"<\/span><\/span> class=\"com.lidihuo.PrintableFactory\"<\/span><\/span>><\/bean>\n<bean id=\"p\"<\/span> class=\"com.lidihuo.PrintableFactory\" factory-method=\"getPrintable\"<\/span> \nfactory-bean=\"pfactory\"><\/bean>\n<\/beans>\n<\/pre>\n<\/code>\n <\/div>\n \n \u8f93\u51fa:\n <\/div>\n\n\nhello a\n<\/pre>\n<\/code>\n <\/div>\n <\/body> \n<\/html><\/p>\n","protected":false},"excerpt":{"rendered":"Spring Dependency\u6ce8\u5165zh-cn","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[105],"tags":[],"class_list":["post-536","post","type-post","status-publish","format-standard","hentry","category-bc_spring_jc"],"_links":{"self":[{"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/posts\/536"}],"collection":[{"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/comments?post=536"}],"version-history":[{"count":0,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/posts\/536\/revisions"}],"wp:attachment":[{"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/media?parent=536"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/categories?post=536"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/tags?post=536"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}