Spring3 MVC Annotaction入门(登录示例)

浏览资料
1 SpringMVC入门实例及详细讲解
http://javacrazyer.iteye.com/blog/790834
2 Spring mvc 实例－－使用velocity视图，解决中文乱码问题
http://blog.csdn.net/sabuhaha/archive/2009/08/25/4483271.aspx
3 SpringMVC整合FreeMarker中文乱码解决方案
http://www.easyjf.com/blog/html/20071218/884747.html
4 使用 Spring 2.5 基于注解驱动的 Spring MVC
http://www.ibm.com/developerworks/cn/java/j-lo-spring25-mvc/

一 开发工具环境:Myeclipse6.6+Tomcat7+JDK1.6
所用jar文件:

二 示例代码如下:
WEB控制层

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import net.liuzd.vo.User;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

@Controller
@RequestMapping("/user.do")
public class UserController {

	@SuppressWarnings("unchecked")
	@RequestMapping(params = "method=add")
	public String login(@ModelAttribute("user")
	User user, HttpServletRequest req, HttpServletResponse response) {
		// 此处调用服务层进行相应的业务操作
		System.out.println("用户信息: " + user);
		// 传递对象于下一页面
		req.setAttribute("user", user);
		// 调用服务层进行验证用户,此处只演示功能
		if ("spring".equals(user.getUserId())
				&& "spring".equals(user.getUserPassword())) {
			return "success";
		}
		return "error";
	}

	@SuppressWarnings("unchecked")
	// @RequestMapping(params= "method=add2",method=RequestMethod.POST)
	// 定义method方法不是必须的
	@RequestMapping(params = "method=add2")
	public ModelAndView login2(@ModelAttribute("user")
	User user, HttpServletRequest req, HttpServletResponse response) {

		// 此处调用服务层进行相应的业务操作
		System.out.println("用户信息2: " + user);
		// 使用ModelAndView保存对象于下一页面
		ModelAndView model = new ModelAndView();
		model.addObject("user", user);
		// 调用服务层进行验证用户,此处只演示功能
		if ("spring".equals(user.getUserId())
				&& "spring".equals(user.getUserPassword())) {
			model.setViewName("success");
		} else {
			model.setViewName("error");
		}
		return model;
	}	
	
	@RequestMapping(params = "method=add3")
	public String login3(@ModelAttribute("user")User user,Model model) {	
		
		model.addAttribute("user",user);  		
		System.out.println("用户信息3: "+user);
		// 调用服务层进行验证用户,此处只演示功能
		if ("spring".equals(user.getUserId())	&& "spring".equals(user.getUserPassword())) {
			return "success";
		}
		//放入model默认把参数存于请求
		model.addAttribute("msg","用户或者密码错误!");  	
		return  "error";
		
		/**
		 * 重定向JSP页面,走出了springmvc配置的view(jsp)
		 * 因为这样说明:model.addAttribute("msg","用户或者密码错误!"); 
		 * 获取不到值了
		 * 不加上.jsp就是这样:http://127.0.0.1:8080/Spring3-Login-Annotaction/index?msg=%E7...		
		 * */		
		//返回到页面是乱码在页面中用${msg}获取不到值,用request.getParams("msg");为乱码
		//return "redirect:index.jsp?msg=用户或者密码错误!";		
	}
}

表示层JSP

<%@ page language="java" pageEncoding="UTF-8" contentType="text/html; charset=UTF-8"%>
<form action="${pageContext.request.contextPath}/user.do?method=add" method="post">
        ID号: <input type="text" name="userId" id="userId"><br>
         密码: <input type="password" name="userPassword" id="userPassword"><br>
         <input type="submit" value="Login">
     </form>  <br>
     <form action="${pageContext.request.contextPath}/user.do?method=add2" method="post">
        ID号: <input type="text" name="userId" id="userId"><br>
         密码: <input type="password" name="userPassword" id="userPassword"><br>
         <input type="submit" value="Login2">
     </form>  
      <br>
     <form action="${pageContext.request.contextPath}/user.do?method=add3" method="post">
        ID号: <input type="text" name="userId" id="userId"><br>
         密码: <input type="password" name="userPassword" id="userPassword"><br>        
         <input type="submit" value="Login3">
     </form> 

     
成功页面:success.jsp

欢迎你: ${user.userId}<br>
 <a href="${pageContext.request.contextPath}/index.jsp">返回</a>

失败页面:error.jsp

登录错误:ID号: ${user.userId},密码: ${user.userPassword},<font color='red'>${msg}</font><br>
<a href="${pageContext.request.contextPath}/index.jsp">返回</a>

SPRING MVC.xml配置文件如下:

<?xml version="1.0" encoding="UTF-8" ?>
<beans xmlns="http://www.springframework.org/schema/beans" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p" 
    xmlns:context="http://www.springframework.org/schema/context"
    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">
    <!-- 
         自动搜索@Controller标注的类
         用于指明系统从哪个路径下寻找controller，然后提前初始化这些对象。
     -->
	<context:component-scan base-package="net.liuzd.web.action" />	
	
	<!-- Default ViewResolver -->
	<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"></property>
	</bean>   
	
 </beans>

web.xml配置文件如下:

<filter>
		<filter-name>encodingFilter</filter-name>
		<filter-class>
			org.springframework.web.filter.CharacterEncodingFilter
		</filter-class>
		<init-param>
			<param-name>encoding</param-name>
			<param-value>UTF-8</param-value>
		</init-param>
		<init-param>   
            <param-name>forceEncoding</param-name>   
            <param-value>false</param-value>   
        </init-param>  
	</filter>

	<filter-mapping>
		<filter-name>encodingFilter</filter-name>
		<url-pattern>*.do</url-pattern>
	</filter-mapping>
	
	<filter-mapping>
		<filter-name>encodingFilter</filter-name>
		<url-pattern>*.jsp</url-pattern>
	</filter-mapping>

	<servlet>
		<servlet-name>springmvc</servlet-name>
		<servlet-class>
			org.springframework.web.servlet.DispatcherServlet
		</servlet-class>
		<init-param>
			<param-name>contextConfigLocation</param-name>			
			<!-- 
			  指定XML文件位置
			  <param-value>/WEB-INF/classes/springmvc.xml			  
			  <param-value>classpath*:springmvc.xml
			 -->
			 <!-- 在classpath路径下去寻找springmvc.xml文件 -->			 
			 <param-value>classpath:springmvc.xml
			</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>

	<servlet-mapping>
		<servlet-name>springmvc</servlet-name>
		<url-pattern>*.do</url-pattern>
	</servlet-mapping>

工程示例代码见附件
Spring3 MVC 入门(登录示例)
http://liuzidong.iteye.com/blog/897047

评论

6 楼 joyceKemi 2013-06-26  

补充说明
springmvc.xml改名为springmvc2.xm即可.

5 楼 joyceKemi 2013-06-26  

参照另一片文章解决办法:

springmvc-servlet.xml改名为springmvc2-servlet.xm即可.

4 楼 joyceKemi 2013-06-26  

2013-6-26 13:25:27 org.apache.catalina.core.StandardContext loadOnStartup
严重: Servlet /Spring3-Login-Annotaction threw load() exception
java.lang.UnsupportedClassVersionError: Bad version number in .class file (unable to load class net.liuzd.web.action.UserController)
。。。。
Caused by: java.lang.UnsupportedClassVersionError: Bad version number in .class file (unable to load class net.liuzd.web.action.UserController)

3 楼 joyceKemi 2013-06-26  

下载后，部署，再运行

2 楼 joyceKemi 2013-06-26  

运行地址是类似：http://localhost:8088/Spring3-Login-Annotaction/user.do 吗？

1 楼 zhijie_zhang 2012-09-19  

最近在折腾这东西, 真是谢谢你啦~