Spring4 MVC Hibernate4集成 Annotation

一、本文所用环境

二、工程目录

三、Maven添加依赖

四、新建数据库表

五、配置文件

六、Model层

七、DAO层

八、Service层

九、JSP页面和Controller

十、运行结果

已经充分封装DAO层和Service层

一、    本文所用环境

Spring4.0.3.RELEASE、Hibernate4.3.5.Final、Mysql

二、    工程目录

三、    Maven添加依赖

用Maven创建项目，pom.xml如下：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">

  <modelVersion>4.0.0</modelVersion>

  <groupId>com.lei.demo</groupId>

  <artifactId>mvc-hibernate4</artifactId>

  <packaging>war</packaging>

  <version>0.0.1-SNAPSHOT</version>

  <name>mvc-hibernate4 Maven Webapp</name>

  <url>http://maven.apache.org</url>

  <dependencies>

    <dependency>

      <groupId>junit</groupId>

      <artifactId>junit</artifactId>

      <version>3.8.1</version>

      <scope>test</scope>

    </dependency>

    <dependency>

        <groupId>javax.servlet</groupId>

        <artifactId>servlet-api</artifactId>

        <version>2.5</version>

    </dependency>

    <dependency>

        <groupId>jstl</groupId>

        <artifactId>jstl</artifactId>

        <version>1.2</version>

    </dependency>

    <!-- Spring -->

    <dependency>

        <groupId>org.springframework</groupId>

        <artifactId>spring-core</artifactId>

        <version>4.0.3.RELEASE</version>

    </dependency>

    <dependency>

        <groupId>org.springframework</groupId>

        <artifactId>spring-context</artifactId>

        <version>4.0.3.RELEASE</version>

    </dependency>

    <dependency>

        <groupId>org.springframework</groupId>

        <artifactId>spring-web</artifactId>

        <version>4.0.3.RELEASE</version>

    </dependency>

    <dependency>

        <groupId>org.springframework</groupId>

        <artifactId>spring-webmvc</artifactId>

        <version>4.0.3.RELEASE</version>

    </dependency>

    <dependency>

        <groupId>org.springframework</groupId>

        <artifactId>spring-orm</artifactId>

        <version>4.0.3.RELEASE</version>

    </dependency>

    <dependency>

        <groupId>org.springframework</groupId>

        <artifactId>spring-tx</artifactId>

        <version>4.0.3.RELEASE</version>

    </dependency>

    <dependency>

        <groupId>org.springframework</groupId>

        <artifactId>spring-test</artifactId>

        <version>4.0.3.RELEASE</version>

    </dependency>

    <dependency>

        <groupId>org.springframework</groupId>

        <artifactId>spring-jdbc</artifactId>

        <version>4.0.3.RELEASE</version>

    </dependency>

    <dependency>

        <groupId>org.springframework</groupId>

        <artifactId>spring-expression</artifactId>

        <version>4.0.3.RELEASE</version>

    </dependency>

    <dependency>

        <groupId>org.springframework</groupId>

        <artifactId>spring-aop</artifactId>

        <version>4.0.3.RELEASE</version>

    </dependency>

    <!-- AspectJ -->

    <dependency>

        <groupId>org.aspectj</groupId>

        <artifactId>aspectjrt</artifactId>

        <version>1.7.4</version>

    </dependency>

    <dependency>

        <groupId>org.aspectj</groupId>

        <artifactId>aspectjweaver</artifactId>

        <version>1.7.4</version>

    </dependency>

    <!-- Mysql -->

    <dependency>

        <groupId>mysql</groupId>

        <artifactId>mysql-connector-java</artifactId>

        <version>5.1.29</version>

    </dependency>

    <!-- Hibernate4 -->

    <dependency>

        <groupId>org.hibernate</groupId>

        <artifactId>hibernate-core</artifactId>

        <version>4.3.5.Final</version>

    </dependency>

    <!-- for JPA, use hibernate-entitymanager instead of hibernate-core -->

    <dependency>

        <groupId>org.hibernate</groupId>

        <artifactId>hibernate-entitymanager</artifactId>

        <version>4.3.5.Final</version>

    </dependency>

    <!-- 以下可选 -->

    <dependency>

        <groupId>org.hibernate</groupId>

        <artifactId>hibernate-envers</artifactId>

        <version>4.3.5.Final</version>

    </dependency>

    <dependency>

        <groupId>org.hibernate</groupId>

        <artifactId>hibernate-c3p0</artifactId>

        <version>4.3.5.Final</version>

    </dependency>

    <dependency>

        <groupId>org.hibernate</groupId>

        <artifactId>hibernate-proxool</artifactId>

        <version>4.3.5.Final</version>

    </dependency>

    <dependency>

        <groupId>org.hibernate</groupId>

        <artifactId>hibernate-infinispan</artifactId>

        <version>4.3.5.Final</version>

    </dependency>

    <dependency>

        <groupId>org.hibernate</groupId>

        <artifactId>hibernate-ehcache</artifactId>

        <version>4.3.5.Final</version>

    </dependency>

    <dependency>

        <groupId>org.hibernate</groupId>

        <artifactId>hibernate-commons-annotations</artifactId>

        <version>4.0.4.Final</version>

    </dependency>

    <dependency>

        <groupId>org.hibernate.javax.persistence</groupId>

        <artifactId>hibernate-jpa-2.1-api</artifactId>

        <version>1.0.0.Final</version>

    </dependency>

    <dependency>

        <groupId>org.jboss</groupId>

        <artifactId>jandex</artifactId>

        <version>1.1.0.Final</version>

    </dependency>

    <!-- 为了让Hibernate使用代理模式，需要javassist -->

    <dependency>

       <groupId>org.javassist</groupId>

       <artifactId>javassist</artifactId>

       <version>3.18.1-GA</version>

    </dependency>

    <dependency>

        <groupId>org.jboss.logging</groupId>

        <artifactId>jboss-logging</artifactId>

        <version>3.1.3.GA</version>

    </dependency>

    <dependency>

        <groupId>org.jboss.spec.javax.annotation</groupId>

        <artifactId>jboss-annotations-api_1.2_spec</artifactId>

        <version>1.0.0.Final</version>

    </dependency>

    <dependency>

        <groupId>antlr</groupId>

        <artifactId>antlr</artifactId>

        <version>2.7.7</version>

    </dependency>

    <dependency>

        <groupId>dom4j</groupId>

        <artifactId>dom4j</artifactId>

        <version>1.6.1</version>

    </dependency>

    <dependency>

        <groupId>commons-collections</groupId>

        <artifactId>commons-collections</artifactId>

        <version>3.1</version>

    </dependency>

    <dependency>

        <groupId>commons-dbcp</groupId>

        <artifactId>commons-dbcp</artifactId>

        <version>1.4</version>

    </dependency>

    <dependency>

        <groupId>commons-pool</groupId>

        <artifactId>commons-pool</artifactId>

        <version>1.4</version>

    </dependency>

    <dependency>

        <groupId>javax.transaction</groupId>

        <artifactId>jta</artifactId>

        <version>1.1</version>

    </dependency>

    <dependency>

        <groupId>org.slf4j</groupId>

        <artifactId>slf4j-api</artifactId>

        <version>1.6.1</version>

    </dependency>

    <dependency>

        <groupId>org.hibernate.javax.persistence</groupId>

        <artifactId>hibernate-jpa-2.0-api</artifactId>

        <version>1.0.0.Final</version>

    </dependency>

    <!-- tomcat7.0.35 数据库连接池 -->

    <dependency>

        <groupId>org.apache.tomcat</groupId>

        <artifactId>tomcat-dbcp</artifactId>

        <version>7.0.35</version>

    </dependency>

    <dependency>

        <groupId>com.google.guava</groupId>

        <artifactId>guava</artifactId>

        <version>16.0.1</version>

    </dependency>

  </dependencies>

  <build>

    <finalName>mvc-hibernate4</finalName>

  </build>

</project>

四、    新建数据库表

数据库采用Mysql，新建user表，我们演示操作此表对user进行增删改查

DROP TABLE IF EXISTS `user`;

CREATE TABLE `user` (

  `id` int(11) NOT NULL AUTO_INCREMENT,

  `age` int(11) DEFAULT NULL,

  `nice_name` varchar(32) DEFAULT NULL,

  `name` varchar(32) DEFAULT NULL,

  PRIMARY KEY (`id`)

) ENGINE=InnoDB AUTO_INCREMENT=29 DEFAULT CHARSET=utf8;

在model层下，创建Entity类Users.java见下

package com.lei.demo.model;

import java.io.Serializable;

import javax.persistence.Column;

import javax.persistence.Entity;

import javax.persistence.GeneratedValue;

import javax.persistence.GenerationType;

import javax.persistence.Id;

@Entity(name="User")

public class User implements Serializable {

    private static final long serialVersionUID = 1L;

    public User(){

        super();

    }

    @Id

    @GeneratedValue(strategy=GenerationType.AUTO)

    @Column(name="id")

    private Long id;

    @Column(name="name",length=32)

    private String name;

    @Column(name="age")

    private Integer age;

    @Column(name="nice_name",length=32)

    private String nice_name;

    @Override

    public String toString() {

        return "User [id=" + id + ", user_name=" + name + ", age=" + age

                + ", nice_name=" + nice_name + "]";

    }

    public final Long getId() {

        return id;

    }

    public final void setId(Long id) {

        this.id = id;

    }

    public final String getName() {

        return name;

    }

    public final void setName(String name) {

        this.name = name;

    }

    public final Integer getAge() {

        return age;

    }

    public final void setAge(Integer age) {

        this.age = age;

    }

    public final String getNice_name() {

        return nice_name;

    }

    public final void setNice_name(String nice_name) {

        this.nice_name = nice_name;

    }

}

五、    配置文件

1.        首先看一下Web.xml

<?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"

    xmlns:web="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_3_0.xsd"

        id="WebApp_ID" version="3.0">

  <display-name>Archetype Created Web Application</display-name>

  <context-param>

    <param-name>contextConfigLocation</param-name>

    <param-value>classpath:/spring-*.xml</param-value>

  </context-param>

  <listener>

    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

  </listener>

  <!-- 定义DispatcherServlet -->

  <servlet>

    <servlet-name>mvc-dispatcher</servlet-name>

    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

    <init-param>

      <!-- 默认/WEB-INF/[servlet名字]-servlet.xml加载上下文，

          如果配置了contextConfigLocation参数，

          将使用classpath:/mvc-dispatcher-servlet.xml加载上下文

      -->

      <param-name>contextConfigLocation</param-name>

      <param-value>classpath:/mvc-dispatcher-servlet.xml</param-value>

    </init-param>

    <load-on-startup>1</load-on-startup>

  </servlet>

  <!-- 拦截匹配的请求，这里所有请求采用名字为mvc-dispatcher的DispatcherServlet处理 -->

  <servlet-mapping>

    <servlet-name>mvc-dispatcher</servlet-name>

    <url-pattern>/</url-pattern>

  </servlet-mapping>

</web-app>

2.        mvc-dispatcher-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

    xmlns:context="http://www.springframework.org/schema/context"

    xmlns:mvc="http://www.springframework.org/schema/mvc"

    xmlns:p="http://www.springframework.org/schema/p"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xmlns:tx="http://www.springframework.org/schema/tx"

    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/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-4.0.xsd

        ">

    <!-- 启动自动扫描该包下所有的Bean(例如@Controller) -->

    <context:component-scan base-package="com.lei.demo" />

    <!-- 基于注释的事务，当注释中发现@Transactional时，使用id为“transactionManager”的事务管理器  -->

    <!-- 如果没有设置transaction-manager的值，则spring以缺省默认的事务管理器来处理事务，默认事务管理器为第一个加载的事务管理器 -->

    <tx:annotation-driven transaction-manager="transactionManager"/>

    <!-- 定义视图解析器 -->

    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">

        <property name="prefix">

            <value>/WEB-INF/jsp/</value>

        </property>

        <property name="suffix">

            <value>.jsp</value>

        </property>

    </bean>

</beans>

3.        Spring-hibernate的整合

spring-hibernate.xml文件

<?xml version="1.0" encoding="UTF-8"?>

<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"

    xmlns:tx="http://www.springframework.org/schema/tx"

    xmlns:aop="http://www.springframework.org/schema/aop"

    xsi:schemaLocation="

        http://www.springframework.org/schema/beans

        http://www.springframework.org/schema/beans/spring-beans-4.0.xsd

        http://www.springframework.org/schema/context

        http://www.springframework.org/schema/context/spring-context-4.0.xsd

        http://www.springframework.org/schema/aop

        http://www.springframework.org/schema/aop/spring-aop-4.0.xsd

        http://www.springframework.org/schema/tx

        http://www.springframework.org/schema/tx/spring-tx-4.0.xsd

        ">

    <!-- Hibernate4 -->

    <!-- 加载资源文件  其中包含变量信息，必须在Spring配置文件的最前面加载，即第一个加载-->

    <context:property-placeholder location="classpath:persistence-mysql.properties" />

    <bean id="sessionFactory"

        class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">

        <property name="dataSource" ref="dataSource" />

        <property name="packagesToScan">

            <list>

                <!-- 可以加多个包 -->

                <value>com.lei.demo.model</value>

            </list>

        </property>

        <property name="hibernateProperties">

            <props>

                <prop key="hibernate.dialect">${hibernate.dialect}</prop>

                <prop key="hibernate.show_sql">${hibernate.show_sql}</prop>

            </props>

        </property>

    </bean>

    <!-- 数据库映射 -->

    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">

      <property name="driverClassName" value="${jdbc.driverClassName}" />

      <property name="url" value="${jdbc.url}" />

      <property name="username" value="${jdbc.user}" />

      <property name="password" value="${jdbc.pass}" />

   </bean>

    <!-- 配置Hibernate事务管理器 -->

    <bean id="transactionManager"

        class="org.springframework.orm.hibernate4.HibernateTransactionManager">

      <property name="sessionFactory" ref="sessionFactory" />

   </bean>

   <!-- 配置事务异常封装 -->

   <bean id="persistenceExceptionTranslationPostProcessor"

       class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor" />

</beans>

资源文件persistence-mysql.properties如下：

# jdbc.X

jdbc.driverClassName=com.mysql.jdbc.Driver

jdbc.url=jdbc:mysql://192.168.150.63:3306/test?createDatabaseIfNotExist=true

jdbc.user=root

jdbc.pass=root111111

# hibernate.X

hibernate.connection.driverClass=org.gjt.mm.mysql.Driver

hibernate.connection.url=jdbc:mysql://192.168.150.63:3306/test

hibernate.dialect=org.hibernate.dialect.MySQL5Dialect

hibernate.connection.username=root

hibernate.connection.password=root111111

hibernate.show_sql=true

六、    Model层

此处model层只有一个User类，见前文user.java。

七、    DAO层

DAO层包括3个包，各个包中类如下：

com.lei.demo.dao.common: IOperations, AbstractHibernateDao

com.lei.demo.dao: IUserDao

com.lei.demo.dao.impl: UserDao

代码如下：

IOperations.java，通用的操作接口

package com.lei.demo.dao.common;

import java.io.Serializable;

import java.util.List;

/*

 * 通用的操作接口

 */

public interface IOperations<T extends Serializable> {

        T findOne(final long id);

        List<T> findAll();

        void create(final T entity);

        T update(final T entity);

        void delete(final T entity);

        void deleteById(final long entityId);

}

AbstractHibernateDao.java实现了IOperations接口，所有DAO都需要继承此类，这样就避免重复的写一些CURD。

package com.lei.demo.dao.common;

import java.io.Serializable;

import java.util.List;

import javax.annotation.Resource;

import org.hibernate.Session;

import org.hibernate.SessionFactory;

import com.google.common.base.Preconditions;

@SuppressWarnings("unchecked")

public abstract class AbstractHibernateDao<T extends Serializable> implements IOperations<T> {

    private Class<T> clazz;

    @Resource(name="sessionFactory")

    private SessionFactory sessionFactory;

    protected final void setClazz(final Class<T> clazzToSet) {

        this.clazz = Preconditions.checkNotNull(clazzToSet);

    }

    protected final Session getCurrentSession() {

        return sessionFactory.getCurrentSession();

    }

    @Override

    public final T findOne(final long id) {

        return (T)getCurrentSession().get(clazz, id);

    }

    @Override

    public final List<T> findAll() {

        return getCurrentSession().createQuery("from " + clazz.getName()).list();

    }

    @Override

    public final void create(final T entity) {

         Preconditions.checkNotNull(entity);

         // getCurrentSession().persist(entity);

         getCurrentSession().saveOrUpdate(entity);

    }

    @Override

    public final T update(final T entity) {

        Preconditions.checkNotNull(entity);

        getCurrentSession().update(entity);

        return entity;

        //return (T)getCurrentSession().merge(entity);

    }

    @Override

    public final void delete(final T entity) {

         Preconditions.checkNotNull(entity);

         getCurrentSession().delete(entity);

    }

    @Override

    public final void deleteById(final long entityId) {

        final T entity = findOne(entityId);

        Preconditions.checkState(entity != null);

        delete(entity);

    }

}

IUserDao.java具体的DAO的接口，继承了IOperations

package com.lei.demo.dao;

import com.lei.demo.dao.common.IOperations;

import com.lei.demo.model.User;

public interface IUserDao extends IOperations<User> {

    //让所有的DAO都实现基本的操作接口IOperations

    //除了实现IOperations中的基本操作之外，特定的DAO要实现其他操作可以在对应的接口DAO中定义方法，

    //此处UserDao的接口IUserDao不需要实现其他方法

}

UserDao.java具体的DAO实现

package com.lei.demo.dao.impl;

import org.springframework.stereotype.Repository;

import com.lei.demo.dao.IUserDao;

import com.lei.demo.dao.common.AbstractHibernateDao;

import com.lei.demo.model.User;

@Repository("usersDao")

public class UserDao extends AbstractHibernateDao<User> implements IUserDao {

    public UserDao() {

        super();

        setClazz(User.class);

    }

}

至此，DAO层已经完成。

八、    Service层

Service层包括3个包，各个包中类如下：

com.lei.demo.service.common: AbstractService

com.lei.demo.service: IUserService

com.lei.demo.service.impl: UserService

AbstractService.java,实现了IOperations，所有的Service都要继承此类，这样就避免了重复实现通用的方法，注意类前的注释“@Transactional

”，表示其中所有的方法都需要引入事务，代码如下：

package com.lei.demo.service.common;

import java.io.Serializable;

import java.util.List;

import org.springframework.transaction.annotation.Transactional;

import com.lei.demo.dao.common.IOperations;

@Transactional

public abstract class AbstractService<T extends Serializable> implements IOperations<T> {

    protected abstract IOperations<T> getDao();

    @Override

    public T findOne(final long id) {

        return getDao().findOne(id);

    }

    @Override

    public List<T> findAll() {

        return getDao().findAll();

    }

    @Override

    public void create(final T entity) {

        getDao().create(entity);

    }

    @Override

    public T update(final T entity) {

        return getDao().update(entity);

    }

    @Override

    public void delete(final T entity) {

        getDao().delete(entity);

    }

    @Override

    public void deleteById(long entityId) {

        getDao().deleteById(entityId);

    }

}

IUserService.java接口

package com.lei.demo.service;

import com.lei.demo.dao.common.IOperations;

import com.lei.demo.model.User;

public interface IUserService extends IOperations<User> {

}

UserService.java，具体的Service实现类就很简单了，因为大部分通用的方法都在其继承的虚类AbstractService中实现了，这里只要注入具体的dao即可：

package com.lei.demo.service.impl;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;

import com.lei.demo.dao.IUserDao;

import com.lei.demo.dao.common.IOperations;

import com.lei.demo.model.User;

import com.lei.demo.service.IUserService;

import com.lei.demo.service.common.AbstractService;

@Service("userService")

public class UserService extends AbstractService<User> implements IUserService {

    @Resource(name="usersDao")

    private IUserDao dao;

    public UserService() {

        super();

    }

    @Override

    protected IOperations<User> getDao() {

        return this.dao;

    }

}

九、    JSP页面和Controller

Jsp页面放在WEB-INF/jsp/user/…下，分别是user的增删改查页面，

WEB-INF/jsp/user/add.jsp

WEB-INF/jsp/user/edit.jsp

WEB-INF/jsp/user/list.jsp

WEB-INF/jsp/user/detail.jsp

以下是具体页面代码

WEB-INF/jsp/user/add.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"

    pageEncoding="UTF-8"%>

 <%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

<title>Add User</title>

</head>

<body>

    <form action="add" method="post">

        Name:<input id="name" name="name" type="text" />

        <br>

        Nice Name:<input id="nice_name" name="nice_name" type="text" />

        <br>

        Age:<input id="age" name="age" type="text" />

        <br>

        <input type="submit" value="提交">

    </form>

</body>

</html>

WEB-INF/jsp/user/edit.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"

    pageEncoding="UTF-8"%>

<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

<title>Edit user</title>

</head>

<body>

    <c:url var="saveUrl" value="/user/save/${userAttribute.id }" />

    <form:form modelAttribute="userAttribute" action="${saveUrl }">

        <table>

            <tr>

                <td>ID:</td>

                <td><form:input path="id" readonly="true"/></td>

            </tr>

            <tr>

                <td>Name:</td>

                <td><form:input path="name"/></td>

            </tr>

            <tr>

                <td>Nice name:</td>

                <td><form:input path="nice_name"/></td>

            </tr>

            <tr>

                <td>Age:</td>

                <td><form:input path="age"/></td>

            </tr>

        </table>

        <input type="submit" value="Save">

    </form:form>

</body>

</html>

WEB-INF/jsp/user/list.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"

    pageEncoding="UTF-8"%>

<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

<title>User List</title>

</head>

<body>

    <a href="add">Add</a>

    <table>

        <tr>

            <td>ID</td>

            <td>Name</td>

            <td>NiceName</td>

            <td>Age</td>

        </tr>

        <c:forEach var="user" items="${userList }" >

            <tr>

                <td>${user.id }</td>

                <td>${user.name }</td>

                <td>${user.nice_name }</td>

                <td>${user.age }</td>

                <td><a href="show/${user.id }">详细</a></td>

                <td><a href="edit/${user.id }">编辑</a></td>

                <td><a href="del/${user.id }">删除</a></td>

            </tr>

        </c:forEach>

    </table>

</body>

</html>

WEB-INF/jsp/user/detail.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"

    pageEncoding="UTF-8"%>

<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

<title>Show user</title>

</head>

<body>

    <c:out value="${user.id }"></c:out>

    <br>

    <c:out value="${user.name }"></c:out>

    <br>

    <c:out value="${user.nice_name }"></c:out>

    <br>

    <c:out value="${user.age }"></c:out>

</body>

</html>

写Controller访问上边的jsp，UserController.java

package com.lei.demo.controller;

import java.util.List;

import javax.annotation.Resource;

import org.springframework.stereotype.Controller;

import org.springframework.ui.Model;

import org.springframework.web.bind.annotation.ModelAttribute;

import org.springframework.web.bind.annotation.PathVariable;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

import org.springframework.web.servlet.ModelAndView;

import com.lei.demo.model.User;

import com.lei.demo.service.IUserService;

@Controller

@RequestMapping("/user")

public class UserController {

    @Resource(name="userService")

    private IUserService userService;

    @RequestMapping(value="/count",method=RequestMethod.GET)

    public ModelAndView userCount() {

        int count = userService.findAll().size();

        ModelAndView mv = new ModelAndView();

        mv.addObject("userCount", count);

        mv.setViewName("user/userCount");

        return mv;

    }

    @RequestMapping(value="/list",method=RequestMethod.GET)

    public ModelAndView getUserlist(Model model){

        ModelAndView mv = new ModelAndView();

        List<User> userList = userService.findAll();

        System.out.println("log======table 'user' all records:"+userList.size());

        mv.addObject("userList", userList);

        mv.setViewName("user/list");

        return mv;

    }

    @RequestMapping(value="/add",method=RequestMethod.GET)

    public ModelAndView getAdd(){

        ModelAndView mv = new ModelAndView();

        mv.setViewName("user/add");

        return mv;

    }

    @RequestMapping(value="/add",method=RequestMethod.POST)

    public String add(@ModelAttribute("user") User user){

        userService.create(user);

        return "redirect:/user/list";

    }

    @RequestMapping(value="/show/{userid}",method=RequestMethod.GET)

    public ModelAndView show(@PathVariable Long userid){

        User user = userService.findOne(userid);

        ModelAndView mv = new ModelAndView();

        mv.addObject("user", user);

        mv.setViewName("user/detail");

        return mv;

    }

    @RequestMapping(value="/del/{userid}",method=RequestMethod.GET)

    public String del(@PathVariable Long userid){

        userService.deleteById(userid);

        return "redirect:/user/list";

    }

    @RequestMapping(value="/edit/{userid}",method=RequestMethod.GET)

    public ModelAndView getEdit(@PathVariable Long userid,Model model){

        User user = userService.findOne(userid);

        model.addAttribute("userAttribute", user);

        ModelAndView mv = new ModelAndView();

        mv.setViewName("user/edit");

        return mv;

    }

    @RequestMapping(value="/save/{userid}",method=RequestMethod.POST)

    public String saveEdit(@ModelAttribute("userAttribute") User user,@PathVariable Long userid){

        userService.update(user);

        return "redirect:/user/list";

    }

}

十、    运行结果

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