spring整合mybatis

昨天整合了spring和restlet，实现了restful服务，但是数据库这部分还没着落，今天再整合mybatis，这样1个完整的restful服务就搭建完成了。

项目目录

 

1、配置数据库连接池和mybatis

　　如果是纯spring服务，则在spring的配置文件application.xml里配置，如果是restlet则在restlet-servlet.xml里配置，这里接着昨天的restlet服务所以在restlet-servlet.xml里配置。

　　首先配置数据库dataSource，这里采用c3p0连接池。

　　然后配置sqlSessionFactory，整合spring和mybatis，配置上mapperLocations，就会自动扫描sql文件。

　　配置sqlSessionTemplate，注入到dao里，通过sqlSessionTemplate操作数据。

 

xml version="1.0"?>
<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"
       xmlns:aop="http://www.springframework.org/schema/aop" 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/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">
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
          destroy-method="close">
        <property name="driverClass" value="com.mysql.jdbc.Driver" />
        <property name="jdbcUrl" value="jdbc:mysql://192.168.0.1:3306/xxxx?useUnicode=true"/>
        <property name="user" value="xxx" />
        <property name="password" value="xxx" />
        
        <property name="initialPoolSize"> <value>15value> property>
        <property name="maxPoolSize" value="50" />
        <property name="minPoolSize" value="10" />
        <property name="maxIdleTime" value="600" />
        <property name="idleConnectionTestPeriod" value="360" />
        <property name="preferredTestQuery" value="select 1" />
        <property name="acquireIncrement" value="5" />
        <property name="acquireRetryAttempts" value="50" />
        <property name="acquireRetryDelay" value="1000" />
        <property name="breakAfterAcquireFailure" value="true" />
        <property name="autoCommitOnClose" value="false" />
        <property name="testConnectionOnCheckout" value="true" />
        <property name="maxStatements" value="100" />
        <property name="maxStatementsPerConnection" value="5" />
    bean>

    
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        
        <property name="mapperLocations" value="classpath:../sql/*.xml" />

    bean>

    
    <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
        <constructor-arg index="0" ref="sqlSessionFactory">constructor-arg>
    bean>
beans>

 

2、创建保存sql的xml文件first-sql.xml

　　在sql文件里配置sql语句，查询的配置成select标签，修改的配置成update标签。

　　查询结果和Bean的映射通过restMap，查询list的配置方式和单条是一样的，只不过在dao里用selectList。

　　参数用#{参数名}

xml version="1.0" encoding="UTF-8" ?>
DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.chen.mybatis">
    <select id="queryOneCar" resultMap="carMapper" >
        select * from ixintui_table where msgid= #{msgId}
    select>

    <select id="queryCarList" resultMap="carMapper" >
        select * from ixintui_table where msgid LIKE '73309%'
    select>

    <select id="queryCarMap" resultType="java.util.HashMap" >
        select * from ixintui_table where msgid='733095477'
    select>

    <update id="updateCity" >
        update city_list set engineno='0' where city_code='jinan'
    update>

    <resultMap id="carMapper" type="com.chen.rest.IxintuiBean">
        <result property="messageId" column="msgid" javaType="java.lang.String">result>
        <result property="plateNumber" column="plate_number" javaType="java.lang.String">result>
        <result property="token" column="token" javaType="java.lang.String">result>
    resultMap>
mapper>

 

3、创建dao层

注入sqlSessionTemplate，查询1条结果用sqlSessionTemplate.selectOne；
查询list用selectList；
查询map用selectMap，在sql.xml里resultType写java.util.HashMap。

package com.chen.rest;

import org.mybatis.spring.SqlSessionTemplate;
import org.restlet.data.Form;
import org.restlet.representation.Representation;
import org.restlet.representation.StringRepresentation;
import org.restlet.resource.Get;
import org.restlet.resource.Post;
import org.restlet.resource.ServerResource;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.support.rowset.SqlRowSet;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import java.util.List;
import java.util.Map;

/**
 * @author chenjie
 * @version 1.0
 * @since 2017-02-09
 */
public class QueryCar extends ServerResource
{


    @Resource
    private SqlSessionTemplate sqlSessionTemplate;

    public void setSqlSessionTemplate(SqlSessionTemplate sqlSessionTemplate) {
        this.sqlSessionTemplate = sqlSessionTemplate;
    }

  
    /**
     * post请求
     * 通过Representation来获取请求参数
     * */
    @Post
    public Representation postQueryCar(Representation entity)
    {
       
        Representation representation = new StringRepresentation("hello post");
        try
        {
            //查询1条结果
            IxintuiBean bean = (IxintuiBean)sqlSessionTemplate.selectOne("queryOneCar","733095477");
            System.out.println("selectOne="+bean);
            //查询map
            Map map = sqlSessionTemplate.selectMap("queryCarMap", "msgid");
            System.out.println("selectMap="+map);
            //查询list
            List list = sqlSessionTemplate.selectList("queryCarList");
            for(int i=0;i)
            {
                System.out.println(i+"==="+list.get(i));
            }
            //修改update
            sqlSessionTemplate.update("updateCity");

        }
        catch(Exception e)
        {
            e.printStackTrace();
        }

        return     representation;
    }

}

 

4、创建bean

package com.chen.rest;

/**
 * @author chenjie
 * @version 1.0
 * @since 2017-02-09
 */
public class IxintuiBean
{
    private String messageId;
    private String plateNumber;
    private String token;

    public String getMessageId() {
        return messageId;
    }

    public void setMessageId(String messageId) {
        this.messageId = messageId;
    }

    public String getPlateNumber() {
        return plateNumber;
    }

    public void setPlateNumber(String plateNumber) {
        this.plateNumber = plateNumber;
    }

    public String getToken() {
        return token;
    }

    public void setToken(String token) {
        this.token = token;
    }

    @Override
    public String toString() {
        return "IxintuiBean{" +
                "messageId='" + messageId + '\'' +
                ", plateNumber='" + plateNumber + '\'' +
                ", token='" + token + '\'' +
                '}';
    }
}

 

5、部署服务，测试

 

 

转载于:https://www.cnblogs.com/chenjack/p/6385442.html