springmvc 实例应用

springmvc 应用实例
今天学习,网上好多实例,好多照着坐下来都报错,找了好多资料,总算是搞出来了,方面以后更多的人学习,这里贴出全部代码.与同仁共同交流.

项目结构图:

应用实体

package com.icreate.entity;

import java.io.Serializable;

/**
 * 
 *
 *  @version ： 1.0
 *  
 *  @author  ： 苏若年              <a href="mailto:DennisIT@163.com">发送邮件</a>
 *    
 *  @since   ： 1.0        创建时间:    2013-4-9    上午11:15:50
 *     
 *  @function： TODO        
 *
 */

public class User implements Serializable{

    private int id;
    private String username;
    private String password;
    private int sex;            //1表示男 0表示女
    private String email;
    
    //getter() and  setter ()
    
    public String toString(){
        return this.id + "\t" + this.username + "\t" + this.password + "\t" + this.sex + "\t" + this.email;
    }
}

数据dao接口定义 

package com.icreate.dao;

import java.util.List;

import com.icreate.entity.User;

/**
 * 
 *
 *  @version ： 1.0
 *  
 *  @author  ： 苏若年              <a href="mailto:DennisIT@163.com">发送邮件</a>
 *    
 *  @since   ： 1.0        创建时间:    2013-4-9    上午11:15:50
 *     
 *  @function： TODO        
 *
 */

public interface UserDao {

    public int insert(User user);
    
    public int delete(User user);
    
    public int countAll();
    
    public List<User> selectAll();
    
    public int update(User user);
    
    public User detail(int id);
}

Dao实现,由于模拟所以,这里数据用虚拟数据,并非从数据库中读到的数据,模块功能类似,这里只实现查询模块模拟

package com.icreate.dao.impl;

import java.util.ArrayList;
import java.util.List;
import java.util.UUID;

import org.springframework.stereotype.Repository;

import com.icreate.dao.UserDao;
import com.icreate.entity.User;

/**
 * 
 *
 *  @version ： 1.0
 *  
 *  @author  ： 苏若年              <a href="mailto:DennisIT@163.com">发送邮件</a>
 *    
 *  @since   ： 1.0        创建时间:    2013-4-9    上午11:15:50
 *     
 *  @function： TODO        
 *
 */

@Repository
public class UserDaoImpl implements UserDao{

    public int countAll() {
        // TODO Auto-generated method stub
        return 0;
    }

    public int delete(User user) {
        // TODO Auto-generated method stub
        return 0;
    }

    public int insert(User user) {
        // TODO Auto-generated method stub
        return 0;
    }

    public List<User> selectAll() {
        List<User> list = new ArrayList<User>();
        for(int i=0; i<5; i++){
            User user = new User();
            user.setId(i);
            user.setUsername(UUID.randomUUID().toString().substring(0,8));
            user.setPassword(UUID.randomUUID().toString().substring(0,15));
            user.setSex(i%2);
            user.setEmail(UUID.randomUUID().toString().substring(0,8)+"@163.com");
            list.add(user);
        }
        return list;
    }

    public int update(User user) {
        // TODO Auto-generated method stub
        return 0;
    }

    public User detail(int id) {
        // TODO Auto-generated method stub
        return null;
    }

}

业务service接口定义

package com.icreate.service;

import java.util.List;

import com.icreate.entity.User;

/**
 * 
 *
 *  @version ： 1.0
 *  
 *  @author  ： 苏若年              <a href="mailto:DennisIT@163.com">发送邮件</a>
 *    
 *  @since   ： 1.0        创建时间:    2013-4-9    上午11:15:50
 *     
 *  @function： TODO        
 *
 */

public interface UserService {

    public int insert(User user);
    
    public int delete(User user);
    
    public int countAll();
    
    public List<User> selectAll();
    
    public int update(User user);
    
    public User detail(int id);
    
}

业务service实现 

package com.icreate.service.impl;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.icreate.dao.UserDao;
import com.icreate.entity.User;
import com.icreate.service.UserService;

/**
 * 
 *
 *  @version ： 1.0
 *  
 *  @author  ： 苏若年              <a href="mailto:DennisIT@163.com">发送邮件</a>
 *    
 *  @since   ： 1.0        创建时间:    2013-4-9    上午11:15:50
 *     
 *  @function： TODO        
 *
 */

@Service
public class UserServiceImpl implements UserService{

    @Autowired(required = true)
    private UserDao userDao;
    
    public int countAll() {
        return this.userDao.countAll();
    }

    public int delete(User user) {
        return this.userDao.delete(user);
    }

    public int insert(User user) {
        return this.userDao.insert(user);
    }

    public List<User> selectAll() {
        return this.userDao.selectAll();
    }

    public int update(User user) {
        return this.userDao.update(user);
    }

    public User detail(int id) {
        return this.userDao.detail(id);
    }

}

业务模块相关类就这么点

下面是Springmvc的控制器应用类

package com.icreate.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;

import com.icreate.entity.User;
import com.icreate.service.UserService;

/**
 * 
 *
 *  @version ： 1.0
 *  
 *  @author  ： 苏若年              <a href="mailto:DennisIT@163.com">发送邮件</a>
 *    
 *  @since   ： 1.0        创建时间:    2013-4-9    上午11:15:50
 *     
 *  @function： TODO        
 *
 */

@Controller
@RequestMapping(value = "/user")
public class UserController {

    @Autowired(required = true)
    private UserService userService;
    
    //@RequestMapping("/user.do")是说明这个方法处理user.do这个请求
    @RequestMapping(value="/insert.do")
    public String insert(ModelMap modelMap, User user){
        return "";
    }
    
    @RequestMapping(value="/list.do")
    public String list(ModelMap modelMap){
        modelMap.put("users", this.userService.selectAll());
        System.out.println("控制器将执行结果转发给试图/注意转发试图结果同dispatcher-servlet.xml对比");
        return "userlist";
    }
}

Web.xml文件内容

<?xml version="1.0" encoding="UTF-8"?><web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
    http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
 
     <!-- 配置Spring上线文 -->
     <context-param>  
        <param-name>contextConfigLocation</param-name>  
         <!-- 如果放在/WEB-INF/目录下则值应该为:/WEB-INF/applicationContext.xml -->
        <param-value>classpath:applicationContext.xml</param-value>  
    </context-param>  
    
    <!--Spring的ApplicationContext 载入 -->  
    <listener>     
         <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>     
     </listener>
 
     <!-- Spring 刷新Introspector防止内存泄露 -->  
    <listener>  
        <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>  
    </listener>  
  
      <!-- 配置log4j
     <context-param>
        <param-name>log4jConfigLocation</param-name>
        <param-value>classpath：log4j.properties</param-value>
    </context-param>
     -->
     
    <!-- Spring的log4j监听器 -->
    <listener>
        <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
    </listener>
    
    
    
    <!--配置Sring MVC的核心控制器DispatcherServlet Spring view分发器-->  
    <servlet>
        <servlet-name>dispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <!-- 如果放在/WEB-INF/目录下则值应该为:/WEB-INF/dispatcher-servlet.xml -->
            <param-value>classpath:dispatcher-servlet.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    
    <!--为DispatcherServlet建立映射 -->
    <servlet-mapping>
        <servlet-name>dispatcherServlet</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>
    
    <!-- session超时定义,单位为分钟 -->  
    <session-config>  
        <session-timeout>20</session-timeout>  
    </session-config>  
    
     <!-- 出错页面定义 -->  
    <error-page>  
        <exception-type>java.lang.Throwable</exception-type>  
        <location>/common/500.jsp</location>  
    </error-page>  
    <error-page>  
        <error-code>500</error-code>  
        <location>/common/500.jsp</location>  
    </error-page>  
    <error-page>  
        <error-code>404</error-code>  
        <location>/common/404.jsp</location>  
    </error-page>  
    <error-page>  
        <error-code>403</error-code>  
        <location>/common/403.jsp</location>  
    </error-page>  
    
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
         
</web-app>

applicationContext.xml内容

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
    xmlns:p="http://www.springframework.org/schema/p" xmlns:tx="http://www.springframework.org/schema/tx"
    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  
   http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd  
   http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
    
    <context:annotation-config />
    
    <context:component-scan base-package="com.icreate" />  <!-- 自动扫描所有注解该路径 -->

    <bean class="org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor"/>
     
    
    <!-- 启动Spring MVC的注解功能，完成请求和注解POJO的映射 -->
    <bean
        class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />
        
    <bean id="userDao" class="com.icreate.dao.impl.UserDaoImpl" />
    <bean id="userService" class="com.icreate.service.impl.UserServiceImpl" />
</beans>

dispatcher-servlet.xml内容

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
        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
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">

    <mvc:annotation-driven />
    <context:component-scan base-package="com.icreate.controller" />

    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/view/" />
        <property name="suffix" value=".jsp" />
    </bean>

</beans>

index.jsp中进行事物请求

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%
    String path = request.getContextPath();
    String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<jsp:forward page="${basePath}/user/list.do"></jsp:forward>

dispatcher-servlet.xml中我们配置的试图界面为/WEB-INF/view/下,后缀为.jsp文件

所以我们的userlist.jsp中jsp文件的名字一定要与 UserController 类中

@RequestMapping(value="/list.do")
    public String list(ModelMap modelMap){
        modelMap.put("users", this.userService.selectAll());
        System.out.println("控制器将执行结果转发给试图/注意转发试图结果同dispatcher-servlet.xml对比");
        return "userlist";
    }

方法的返回值一致.这样才能查找到对应的试图页面.

/WEB-INF/view/下的userlist.jsp中核心内容如下,因为我们在控制器中将执行结果数据放入到ModelMap中,所以试图中直接取出该数据显示即可注意items=${users}大括号中的值要跟modelMap中存放的键值对中的键名称一致,同为users

modelMap.put("users", this.userService.selectAll());

 

    <c:forEach items="${users}" var="user" varStatus="status">
                <tr>
                    <!-- ${status.index+1}编号 -->
                    <td><c:out value="${user.id}" /></td>
                    <td><c:out value="${user.username}" /></td>
                    <td><c:out value="${user.password}" /></td>
                    <td><c:if test="${user.sex == 1}">
                            <c:out value="男" />
                        </c:if> <c:if test="${user.sex == 0}">
                            <c:out value="女" />
                        </c:if></td>
                    <td><c:out value="${user.email}" /></td>
                    <td>
                        <a href="/user/detail/${user.id}">detail</a>  |
                        <a href="/user/toupdate/${user.id}">update</a> |
                        <a href="/user/delete/${user.id}">delete</a>
                    </td>
                </tr>
    </c:forEach>

访问URL:http://localhost:8080/springmvc/ (springmvc是我建立的项目名称)

程序运行结果:

附录:

应用所需jar包

转载请注明出处:[http://www.cnblogs.com/dennisit/archive/2013/04/10/3012993.html]