通过MyBatis读取数据库数据并提供rest接口访问

1 mysql 创建数据库脚本

-- phpMyAdmin SQL Dump
-- version 4.2.11
-- http://www.phpmyadmin.net
--
-- Host: localhost
-- Generation Time: 2016-08-02 18:13:50
-- 服务器版本： 5.6.21
-- PHP Version: 5.6.3
SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";
SET time_zone = "+00:00";
;
;
;
;
--
-- Database: `mybatis`
--
-- --------------------------------------------------------
--
-- 表的结构 `Student`
--
CREATE TABLE IF NOT EXISTS `Student` (
`id` int(10) NOT NULL,
`name` varchar(256) NOT NULL,
`age` int(4) NOT NULL
) ENGINE=MyISAM AUTO_INCREMENT=2 DEFAULT CHARSET=latin1;
--
-- 转存表中的数据 `Student`
--
INSERT INTO `Student` (`id`, `name`, `age`) VALUES
(1, 'zhansan', 20);
--
-- Indexes for dumped tables
--
--
-- Indexes for table `Student`
--
ALTER TABLE `Student`
ADD PRIMARY KEY (`id`);
--
-- AUTO_INCREMENT for dumped tables
--
--
-- AUTO_INCREMENT for table `Student`
--
ALTER TABLE `Student`
MODIFY `id` int(10) NOT NULL AUTO_INCREMENT,AUTO_INCREMENT=2;
;
;
;

2 创建与数据库表Student对应的pojo类

package com.mtour.mybatis.demo;
import javax.xml.bind.annotation.XmlRootElement;
@XmlRootElement
public class Student {
int id;
String name;
int age;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}

3 创建映射 studentMapper

select * from Student where id=#{id}

4. 创建 conf.xml

5. 创建 rest 资源

package com.mtour.mybatis.demo;
import java.io.IOException;
import java.io.InputStream;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import javax.ws.rs.GET; 
import javax.ws.rs.Path; 
import javax.ws.rs.Produces; 
import javax.ws.rs.PathParam; 
import javax.ws.rs.core.MediaType; 
@Path("/student") 
public class demo { 
static String resource = "conf.xml";
static InputStream is = demo.class.getClassLoader().getResourceAsStream(resource);
static SqlSessionFactory sessionFactory = new SqlSessionFactoryBuilder().build(is);
@GET 
@Produces(MediaType.TEXT_PLAIN) 
public String sayHello() { 
return "hello jersey , first demo" ; 
} 
@GET 
@Path("/{param}") 
@Produces("text/plain;charset=UTF-8") 
public String sayHelloToUTF8(@PathParam("param") String username) { 
return "Hello " + username; 
} 
@GET 
@Path("/getstudent/{id}") 
@Produces(MediaType.APPLICATION_JSON) 
public Student getUserJson(@PathParam("id") String id) { 
Integer studentId = Integer.valueOf(id);
SqlSession session = sessionFactory.openSession();
String statement = "com.mtour.mybatis.demo.studentMapper.getStudent";
Student s = session.selectOne(statement, studentId);
session.close();
return s; 
}
}

6. 启动调试

源码下载：http://xiazai.jb51.net/201605/yuanma/mybatisDemo(jb51).rar

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