首先导入所需的jar包，项目目录结构如下：
之后需要配置一下web.xml文件，内容如下：
<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://Java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5"> <servlet> <servlet-name>springDispatcherServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>springDispatcherServlet</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping></web-app>
然后配置applicationContext.xml:
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<!-- 配置自动扫描的包 --> <context:component-scan base-package="com.sprmvc.po"></context:component-scan> <!-- 配置视图解析器 将HelloWorldController中的返回值解析为实际的物理视图 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <!-- prefix为前缀,suffix为后缀 --> <property name="prefix" value="/"></property> <property name="suffix" value=".jsp"></property> </bean></beans>
下面开始建立实体类User.java:
package com.sprmvc.po;
public class User { private String userName; private String password; public String getUserName() { return userName; } public void setUserName(String userName) { this.userName = userName; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; }}
然后是控制层代码：
package com.sprmvc.po;
import javax.servlet.http.HttpServletRequest;
import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;
@Controllerpublic class HelloWorldController { @RequestMapping(value="/hello",method = RequestMethod.GET) public String printHelloWorld(HttpServletRequest request,User user) { request.setAttribute("userName", user.getUserName()); request.setAttribute("password", user.getPassword()); return "hello"; }}
这里的value即访问路径，而return的"hello"通过applicationContext.xml中配置的视图解析器会返回到hello.jsp中
接下来我们建立两个.jsp页面，首先是index.jsp:
<body> <form method="get" action="hello"> 用户名：<input type="text" name="userName"> 密码：<input type="password" name="password"><br> <input type="submit" value="提交"> </form> </body>
这里的method和action分别与控制层中的method和value的值相对应，即HelloWorldController.java中的第11行。
然后是hello.jsp:
1 <body> 2 <h1>操作成功了</h1> 3 您的用户名为：${userName}<br>4 您的密码为：${password } 5 </body>
这样只需要将项目加载到tomcat下就可以进行访问了，赶快试试吧。
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