spring基于xml配置文件和基于注解方式入门案例实现
1.基于xml方式引入相关的jar包!--springmvc需要的jar包-- dependency groupIdorg.springframework/groupId artifactIdspring-webmvc/artifactId version4.3.10.RELEASE/version /dependency !--servlet相关包-- dependency groupIdjavax.servlet/groupId artifactIdjavax.servlet-api/artifactId version3.1.0/version /dependency /dependencies配置web.xml!DOCTYPE web-app PUBLIC -//Sun Microsystems, Inc.//DTD Web Application 2.3//EN http://java.sun.com/dtd/web-app_2_3.dtd web-app display-nameArchetype Created Web Application/display-name !--配置servlet-- servlet servlet-nameSpringMVC/servlet-name servlet-classorg.springframework.web.servlet.DispatcherServlet/servlet-class !--配置springmvc.xml的路径-- init-param param-namecontextConfigLocation/param-name param-valueclasspath:springmvc.xml/param-value /init-param /servlet servlet-mapping servlet-nameSpringMVC/servlet-name url-pattern//url-pattern /servlet-mapping /web-app配置为根目录当访问网站时读取springmvc.xml文件中的配置当访问/test 时调用 com.shunli.handler.MyHandler 进行相应数据处理然后访问视图层的show.jsp配置springmvc.xml配置文件?xml version1.0 encodingUTF-8? beans xmlnshttp://www.springframework.org/schema/beans xmlns:xsihttp://www.w3.org/2001/XMLSchema-instance xsi:schemaLocationhttp://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd !--配置HandlerMapping, 将url请求映射到Handler-- bean idhandlerMapping classorg.springframework.web.servlet.handler.SimpleUrlHandlerMapping !--配置mapping-- property namemappings props prop key/testtestHandler/prop /props /property /bean !--配置Handler-- bean idtestHandler classcom.shunli.handler.MyHandler/bean !--配置视图解析器-- bean classorg.springframework.web.servlet.view.InternalResourceViewResolver !--配置前缀-- property nameprefix value//property !--配置后缀-- property namesuffix value.jsp/property /bean /beansMyHandler.javapackage com.shunli.handler; import org.springframework.web.servlet.ModelAndView; import org.springframework.web.servlet.mvc.Controller; /** * author shunli */ public class MyHandler implements Controller { Override public ModelAndView handleRequest(javax.servlet.http.HttpServletRequest httpServletRequest, javax.servlet.http.HttpServletResponse httpServletResponse) throws Exception { //装载模型数据和逻辑视图 ModelAndView modelAndView new ModelAndView(); //添加模型数据 modelAndView.addObject(name, Tom); //添加逻辑视图 modelAndView.setViewName(show); return modelAndView; } }2.基于注解方式与xml不同的是不需要配置这两个beanbean idhandlerMapping classorg.springframework.web.servlet.handler.SimpleUrlHandlerMapping bean idtestHandler classcom.shunli.handler.MyHandler/bean首先配置springmvc2.xml?xml version1.0 encodingUTF-8? beans xmlnshttp://www.springframework.org/schema/beans xmlns:xsihttp://www.w3.org/2001/XMLSchema-instance xmlns:contexthttp://www.springframework.org/schema/context xsi:schemaLocationhttp://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd !-- 开启注解扫描 -- !-- 其中base-package属性指定需要扫描的基类包spring容器将会扫描这个基类包及其子包中的所有类 -- !-- 当需要扫描多个包时可以使用逗号分隔 -- context:component-scan base-packagecom.shunli.handler/context:component-scan !--配置视图解析器-- bean classorg.springframework.web.servlet.view.InternalResourceViewResolver !--配置前缀-- property nameprefix value//property !--配置后缀-- property namesuffix value.jsp/property /bean /beansAnnotationHandler.javapackage com.shunli.handler; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.servlet.ModelAndView; import java.util.Map; Controller public class AnnotationHandler { /* 第一种方式 */ RequestMapping(/modelAndviewview) public ModelAndView modelAndViewTest(){ //装载模型数据和逻辑视图 ModelAndView modelAndView new ModelAndView(); //添加模型数据 modelAndView.addObject(name,Tom); //添加逻辑视图 modelAndView.setViewName(show); return modelAndView; } /* 第二种 */ RequestMapping(/model) public String modelTest(Model model){ //添加模型数据 model.addAttribute(name, Jerry); //设置逻辑视图 return show; } /* 第三种 */ RequestMapping(/cat) public String MapTest(MapString, String map){ //添加模型数据 map.put(name, Cat); return show; } }
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