Spring 梳理 - javaConfig在App和webApp中的应用

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  1. package com.dxz.demo.configuration; import org.springframework.context.annotation.Configuration; @Configuration public class TestConfiguration { public TestConfiguration() { System.out.println("TestConfiguration容器启动初始化。。。"); } }

    【Spring 梳理 - javaConfig在App和webApp中的应用】 
  2. APP
    1. 方法1
      1. package com.dxz.demo.configuration; import org.springframework.context.ApplicationContext; import org.springframework.context.annotation.AnnotationConfigApplicationContext; public class TestMain { public static void main(String[] args) {// @Configuration注解的spring容器加载方式,用AnnotationConfigApplicationContext替换ClassPathXmlApplicationContext ApplicationContext context = new AnnotationConfigApplicationContext(TestConfiguration.class); // 如果加载spring-context.xml文件: // ApplicationContext context = new // ClassPathXmlApplicationContext("spring-context.xml"); } }public static void main(String[] args) {// @Configuration注解的spring容器加载方式,用AnnotationConfigApplicationContext替换ClassPathXmlApplicationContext ApplicationContext context = new AnnotationConfigApplicationContext(TestConfiguration.class); //获取bean TestBean tb = (TestBean) context.getBean("testBean"); tb.sayHello(); }

         
    2. 方法2
      1. public static void main(String[] args) { ApplicationContext ctx = new AnnotationConfigApplicationContext(); ctx.register(AppContext.class) }

         
  3. webApp
    1. 方法1
      1. < web-app> < context-param> < param-name> contextClass< /param-name> < param-value> org.springframework.web.context. support.AnnotationConfigWebApplicationContext < /param-value> < /context-param> < context-param> < param-name> contextConfigLocation< /param-name> < param-value> demo.AppContext < /param-value> < /context-param> < listener> < listener-class> org.springframework.web.context.ContextLoaderListener < /listener-class> < /listener> < servlet> < servlet-name> sampleServlet< /servlet-name> < servlet-class> org.springframework.web.servlet.DispatcherServlet < /servlet-class> < init-param> < param-name> contextClass< /param-name> < param-value> org.springframework.web.context. support.AnnotationConfigWebApplicationContext < /param-value> < /init-param> < /servlet> < /web-app>

         
    2. 方法2
      1. package com.jt; import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer; public class AppInitializerextends AbstractAnnotationConfigDispatcherServletInitializer{ @Override protected Class< ?> [] getRootConfigClasses() { return new Class< ?> [] { RootConfig.class }; }@Override protected Class< ?> [] getServletConfigClasses() { return new Class< ?> [] { WebConfig.class }; }@Override protected String[] getServletMappings() { return new String[] { "/" }; }}

         



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