用Jersey构建RESTful服务7--Jersey+SQLServer+Hibernate4.3+Spring3.2

一、总体说明

本例运行演示了用 Jersey 构建 RESTful 服务中，如何集成 Spring3

二、环境

上文的项目RestDemo
Spring及其他相关的jar ,导入项目

三、配置

根目录下下创建 Spring 的配置文件applicationContext.xml；配置如下： <?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:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
  http://www.springframework.org/schema/beans/spring-beans.xsd
  http://www.springframework.org/schema/context
  http://www.springframework.org/schema/context/spring-context.xsd"
        >
    <!-- 激活那些已经在g容器里注册过的bean -->    
    <context:annotation-config></context:annotation-config>

    <!-- 在容器中注入bean -->
    <bean id="UserServiceImpl" class="com.waylau.rest.service.impl.UserServiceImpl"/>
    <bean id="UserDaoImpl" class="com.waylau.rest.dao.impl.UserDaoImpl"/>

</beans>

在com.waylau.rest.service和com.waylau.rest.service.impl下分别增加 UserService 和 UserServiceImpl。

UserService.java

package com.waylau.rest.service;

import java.util.List;

import com.waylau.rest.bean.User;

/**
 * User Service 接口
 * @author waylau.com
 * 2014-7-25
 */
public interface UserService {

    public User getUserById(String id);

    public boolean deleteUserById(String id);

    public boolean createUser(User user);

    public boolean updateUser(User user);

    public List<User> getAllUsers();
}

UserServiceImpl.java

package com.waylau.rest.service.impl;

import java.util.List;

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

import com.waylau.rest.bean.User;
import com.waylau.rest.dao.impl.UserDaoImpl;
import com.waylau.rest.service.UserService;
/**
 * User Service 接口实现
 * @author waylau.com
 * 2014-7-25
 */
public class UserServiceImpl implements UserService {

    @Autowired
    private UserDaoImpl userDaoImpl;

    public UserServiceImpl() {
        // TODO Auto-generated constructor stub
    }

    @Override
    public User getUserById(String id) {
        return userDaoImpl.getUserById(id);
    }

    @Override
    public boolean deleteUserById(String id) {
        return userDaoImpl.deleteUserById(id);
    }

    @Override
    public boolean createUser(User user) {
        return userDaoImpl.createUser(user);
    }

    @Override
    public boolean updateUser(User user) {
        return userDaoImpl.updateUser(user);
    }

    @Override
    public List<User> getAllUsers() {
        return userDaoImpl.getAllUsers();
    }

}

修改 UserResource.java

package com.waylau.rest.resources;

import java.util.ArrayList;
import java.util.List;
import java.util.logging.Logger;

import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.Consumes;
import javax.ws.rs.PathParam;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.DELETE;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.PUT;

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

import com.waylau.rest.bean.User;
import com.waylau.rest.service.impl.UserServiceImpl;

/**
 * 用户资源
 * @author waylau.com
 * 2014-7-26
 */
@Path("/users")
public class UserResource {
    private static final Logger LOGGER = Logger.getLogger(UserResource.class.getName());

    @Autowired
    private UserServiceImpl userServiceImpl;

    public UserResource() {
        LOGGER.fine("UserResource()");
    }

    /**
     * 增加
     * @param user
     */
    @POST
    @Consumes({MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON})
    public void createUser(User user) {
        userServiceImpl.createUser(user);
    }

    /**
     * 删除
     * @param id
     */
    @DELETE
    @Path("{id}")
    public void deleteUser(@PathParam("id")String id){
        userServiceImpl.deleteUserById(id);
    }

    /**
     * 修改
     * @param user
     */
    @PUT
    @Consumes(MediaType.APPLICATION_XML)
    public void updateUser(User user){
        userServiceImpl.updateUser(user);
    }

    /**
     * 根据id查询
     * @param id
     * @return
     */
    @GET
    @Path("{id}")
    @Produces({MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON})
    public User getUserById(@PathParam("id") String id){
        User u = userServiceImpl.getUserById(id);
        return u;
    }

    /**
     * 查询所有
     * @return
     */
    @GET
    @Produces({MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON})
    public List<User> getAllUsers(){     
        List<User> users = new ArrayList<User>();   
        users = userServiceImpl.getAllUsers();
        return users;
    }
}

修改web.xml,插入

<module-name>RestDemo</module-name>

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

<context-param>
  <param-name>contextConfigLocation</param-name>
  <param-value>classpath:applicationContext.xml</param-value>
</context-param>

四、运行

先运行项目

运行UserClient.java测试，控制台输出如下

****增加用户addUser****
****查询所有getAllUsers****
[{"userId":"002","userName":"sdfs","age":"23"},{"userId":"003","userName":"sdfs","age":"23"},{"userId":"004","userName":"sdfs","age":"23"},{"userId":"005","userName":"sdfs","age":"23"},{"userId":"006","userName":"Susan","age":"21"},{"userId":"007","userName":"sdfs","age":"23"},{"userId":"ds","userName":"ds","age":"ds"}]
****修改用户updateUser****
****根据id查询用户****
006Susan33
****查询所有getAllUsers****
[{"userId":"002","userName":"sdfs","age":"23"},{"userId":"003","userName":"sdfs","age":"23"},{"userId":"004","userName":"sdfs","age":"23"},{"userId":"005","userName":"sdfs","age":"23"},{"userId":"006","userName":"Susan","age":"33"},{"userId":"007","userName":"sdfs","age":"23"},{"userId":"ds","userName":"ds","age":"ds"}]
****删除用户****
****查询所有getAllUsers****
[{"userId":"002","userName":"sdfs","age":"23"},{"userId":"003","userName":"sdfs","age":"23"},{"userId":"004","userName":"sdfs","age":"23"},{"userId":"005","userName":"sdfs","age":"23"},{"userId":"007","userName":"sdfs","age":"23"},{"userId":"ds","userName":"ds","age":"ds"}]

本章源码（含jar包）：https://github.com/waylau/RestDemo/tree/master/jersey-demo7-sqlserver-hibernate-spring3