spring mvc 配置使用说明

今天药忘吃喽~ 2022-05-28 10:09 167阅读 0赞

spring mvc 相对struts2来说开发效率较高，性能来说也较高。

需要重点说明的是Struts2里边可以省略后缀类似http://xxxx.action 可以省略action

但是spring mvc不能省略必须带后缀http://xxx.action

**web.xml配置文件**

<?xml version="1.0" encoding="UTF-8"?>
    <web-app id="StoreQuery" version="2.4"
    	xmlns="http://java.sun.com/xml/ns/j2ee" 
    	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    	xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
    	
      <display-name>StoreQuerySpringMVC Application</display-name>
      <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>default.jsp</welcome-file>
        <welcome-file>index.html</welcome-file>
      </welcome-file-list>
      
    
      <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
      </listener>
      <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/appContext.xml</param-value>
      </context-param>
      
    
      <servlet>
            <servlet-name>app</servlet-name>
            <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
            <init-param>
                <param-name>contextConfigLocation</param-name>
                <param-value>/WEB-INF/spring-mvc.xml</param-value>
            </init-param>
            <load-on-startup>1</load-on-startup>
        </servlet>
    
        <servlet-mapping>
            <servlet-name>app</servlet-name>
    
    
    
            <url-pattern>*.do</url-pattern>
        </servlet-mapping>
        
    
    </web-app>

**spring-mvc.xml配置**

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
        xmlns:mvc="http://www.springframework.org/schema/mvc"
        xmlns:context="http://www.springframework.org/schema/context" 
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="
        	http://www.springframework.org/schema/context  
            http://www.springframework.org/schema/context/spring-context.xsd
            http://www.springframework.org/schema/beans
            http://www.springframework.org/schema/beans/spring-beans.xsd
            http://www.springframework.org/schema/mvc
            http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    
    
    	<context:component-scan base-package="com.storequery.action"/>	
        <mvc:annotation-driven>
        </mvc:annotation-driven>
        
    
        <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        	<property name="viewClass" value="org.springframework.web.servlet.view.JstlView">
    	    <property name="prefix" value="/WEB-INF/jsp/"/>
        	<property name="suffix" value=".jsp"/>
    	</bean>
    
    
    
    
    
    
    
    
    
    
    
    	 
    
    
        
    </beans>

**Action类配置**

package com.storequery.action;
    
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.servlet.ModelAndView;
    //注解
    @Controller
    @RequestMapping("/loginController.do")  //action多的话可以进行分类  (/log/)
    public class LoginAction {
             //同样的这里可以(login) 访问时就是/lon/login.do  
    	@RequestMapping(params="method=login")
    	public String login(String username, String password) {
    		System.out.println("我进来了");
    		System.out.println(username);
    		return "login/login_success";
    	}   //return "redirect:xxx.do"
    
    }
    //XML配置
    //public class LoginAction implements org.springframework.web.servlet.mvc.Controller {
    //
    //	@Override
    //	public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {
    //		// TODO Auto-generated method stub
    //		System.out.println("我进来了");
    //		String username = request.getParameter("username");
    //		System.out.println(username);
    //		return new ModelAndView("login/login_success");
    //	}
    //	
    //}

**重定向 redirect时 rul发生变化，request里设置的数据会清空**

**forward转发 url不变，request不清空**

**JSP页面内容**

<form action="loginController.do" method="post">  
    				<input type="hidden" name="method" value="login">//提交不同的方法时可以用这个
    				<div class="login-ic">
    					<i ></i>
    					<input type="text" name="username"  value="用户" onFocus="this.value = '';" onBlur="if (this.value == '') {this.value = 'User name';}"/>
    					<div class="clear"> </div>
    				</div>
    				<div class="login-ic">
    					<i class="icon"></i>
    					<input type="password" name="password" value="密码" onFocus="this.value = '';" onBlur="if (this.value == '') {this.value = 'password';}"/>
    					<div class="clear"> </div>
    				</div>
    			
    				<div class="log-bwn">
    					<input type="submit"  value="Login" >
    				</div>
    				<br>
    				<div id="errorDiv"></div>
    				</form>

学到什么再补充