2.5 maven+spring4.X基础上搭建mybatis

来源：互联网发布：怎么进入网站的数据库编辑：程序博客网时间：2024/06/11 00:22

1.前言

1.本博客面向初级开发者。

2.本博客为系列博客，《1.X》系列为服务器数据库相关技术，前几章为简单搭建linux+tomcat+MySQL+nginx+redis、《2.X》为java后台技术前几章为搭建mevan+springmvc4+mybatis、《3.X》为前端UI技术，《4.X》为相关测试技术。

3.本博客在学习别人博客技术基础上，并加以自己实现研究优化为全部原创，有什么问题可以留言，不定期回答，互相交流学习。

2.搭建mybatis

1.准备

1.搭建maven项目
http://blog.csdn.net/zcjfzcjf/article/details/51105522
2.搭建springmvc项目
http://blog.csdn.net/zcjfzcjf/article/details/51233469
http://blog.csdn.net/zcjfzcjf/article/details/51235647
3.使用使用mybatis-generator工具创建mybatis相关代码
http://blog.csdn.net/zcjfzcjf/article/details/51287408
项目结构
这里写图片描述

2.新建sqlmap包

在com.my1下新建sqlmap包将生成的UserInfoMapper.xml放入

3.新建是实体entity包

在com.my1下新建entity包将生成的和UserInfoExample放入

4.dao包

在com.my1下dao包将生成的UserInfoMapper.java放入
这时会报错说明没有添加jar

5.添加jar

修改pom文件如下

<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>mavenSpringMybatisDemo</groupId>  <artifactId>mavenSpringMybatisDemo</artifactId>  <packaging>war</packaging>  <version>0.0.1-SNAPSHOT</version>  <name>mavenSpringMybatisDemo Maven Webapp</name>  <url>http://maven.apache.org</url><!--   声明版本 -->  <properties>      <spring.version>4.0.2.RELEASE</spring.version>      <junit.version>4.11</junit.version> </properties>  <dependencies>    <!--    maven包 -->      <dependency>              <groupId>junit</groupId>              <artifactId>junit</artifactId>              <version>3.8.1</version>              <scope>test</scope>      </dependency>      <dependency>              <groupId>com.sun.faces</groupId>              <artifactId>jsf-api</artifactId>              <version>2.0.4-b09</version>      </dependency>      <dependency>              <groupId>com.sun.faces</groupId>              <artifactId>jsf-impl</artifactId>              <version>2.0.4-b09</version>      </dependency>      <dependency>              <groupId>javax.servlet</groupId>              <artifactId>jstl</artifactId>              <version>1.2</version>      </dependency>      <dependency>              <groupId>taglibs</groupId>              <artifactId>standard</artifactId>              <version>1.1.2</version>      </dependency><!--       springjar包 -->    <dependency>       <groupId>junit</groupId>       <artifactId>junit</artifactId>       <version>${junit.version}</version>      </dependency>      <dependency>       <groupId>org.springframework</groupId>       <artifactId>spring-webmvc</artifactId>       <version>${spring.version}</version>      </dependency>      <!--  spring -->        <!--        事务 -->        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-tx</artifactId>            <version>${spring.version}</version>        </dependency>        <dependency>          <groupId>org.springframework</groupId>          <artifactId>spring-jdbc</artifactId>          <version>${spring.version}</version>      </dependency>      <dependency>          <groupId>org.springframework</groupId>          <artifactId>spring-web</artifactId>          <version>${spring.version}</version>      </dependency>      <dependency>          <groupId>org.springframework</groupId>          <artifactId>spring-aspects</artifactId>          <version>${spring.version}</version>      </dependency>      <dependency>          <groupId>org.springframework</groupId>          <artifactId>spring-context-support</artifactId>          <version>${spring.version}</version>      </dependency>    <!-- over -->      <!--     2016 mybatis学习 -->    <!-- mybatis 包 -->        <dependency>            <groupId>org.mybatis</groupId>            <artifactId>mybatis</artifactId>            <version>3.2.8</version>        </dependency>        <!--mybatis spring 插件 -->        <dependency>            <groupId>org.mybatis</groupId>            <artifactId>mybatis-spring</artifactId>            <version>1.2.2</version>        </dependency>        <!-- mysql连接 -->        <dependency>            <groupId>mysql</groupId>            <artifactId>mysql-connector-java</artifactId>            <version>5.1.34</version>        </dependency>        <!-- 数据源 -->        <dependency>            <groupId>com.alibaba</groupId>            <artifactId>druid</artifactId>            <version>1.0.12</version>        </dependency>        <dependency>            <groupId>com.alibaba</groupId>            <artifactId>fastjson</artifactId>            <version>1.2.3</version>        </dependency>        <dependency>            <groupId>org.aspectj</groupId>            <artifactId>aspectjweaver</artifactId>            <version>1.8.4</version>        </dependency>    </dependencies>  <build>    <finalName>mavenSpringMybatisDemo</finalName>  </build></project>

6.增加关于mybatis的配置文件

在src/main/resources下新建mybatis包
下在新建spring-mybatis.xml配置文件
内容如下：

<?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: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-4.1.xsd         http://www.springframework.org/schema/tx         http://www.springframework.org/schema/tx/spring-tx-4.1.xsd        http://www.springframework.org/schema/aop         http://www.springframework.org/schema/aop/spring-aop-4.1.xsd        ">    <!-- 配置数据源 使用的是Druid数据源 -->    <bean name="dataSource" class="com.alibaba.druid.pool.DruidDataSource"        init-method="init" destroy-method="close">        <property name="url" value="${jdbc.url}" />        <property name="username" value="${jdbc.username}" />        <property name="password" value="${jdbc.password}" />        <!-- 初始化连接大小 -->        <property name="initialSize" value="0" />        <!-- 连接池最大使用连接数量 -->        <property name="maxActive" value="20" />        <!-- 连接池最小空闲 -->        <property name="minIdle" value="0" />        <!-- 获取连接最大等待时间 -->        <property name="maxWait" value="60000" />        <property name="poolPreparedStatements" value="true" />        <property name="maxPoolPreparedStatementPerConnectionSize"            value="33" />        <!-- 用来检测有效sql -->        <property name="validationQuery" value="${validationQuery}" />        <property name="testOnBorrow" value="false" />        <property name="testOnReturn" value="false" />        <property name="testWhileIdle" value="true" />        <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 -->        <property name="timeBetweenEvictionRunsMillis" value="60000" />        <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 -->        <property name="minEvictableIdleTimeMillis" value="25200000" />        <!-- 打开removeAbandoned功能 -->        <property name="removeAbandoned" value="true" />        <!-- 1800秒，也就是30分钟 -->        <property name="removeAbandonedTimeout" value="1800" />        <!-- 关闭abanded连接时输出错误日志 -->        <property name="logAbandoned" value="true" />        <!-- 监控数据库 -->        <property name="filters" value="mergeStat" />    </bean>    <!-- myBatis文件 -->    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">        <property name="dataSource" ref="dataSource" />        <!-- 自动扫描entity目录, 省掉Configuration.xml里的手工配置 -->        <property name="mapperLocations" value="classpath:com/my1/sqlmap/*.xml" />    </bean>    <!-- mybatise通过接口来加载配置文件 -->    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">        <property name="basePackage" value="com.my1.dao" />        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />    </bean>    <!-- 配置事务管理器 -->    <bean id="transactionManager"        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">        <property name="dataSource" ref="dataSource" />    </bean>    <!-- 注解方式配置事物 -->    <tx:annotation-driven transaction-manager="transactionManager" />    <!-- 拦截器方式配置事物 --><!--    <tx:advice id="transactionAdvice" transaction-manager="transactionManager"> --><!--        <tx:attributes> --><!--            <tx:method name="insert*" propagation="REQUIRED" /> --><!--            <tx:method name="update*" propagation="REQUIRED" /> --><!--            <tx:method name="delete*" propagation="REQUIRED" /> --><!--            <tx:method name="get*" propagation="SUPPORTS" read-only="true" /> --><!--            <tx:method name="find*" propagation="SUPPORTS" read-only="true" /> --><!--            <tx:method name="select*" propagation="SUPPORTS" read-only="true" /> --><!--        </tx:attributes> --><!--    </tx:advice> -->    <!-- Spring aop事务管理 --><!--    <aop:config> --><!--        <aop:pointcut id="transactionPointcut" --><!--            expression="execution(* org.andy.shop.service..*Impl.*(..))" /> --><!--        <aop:advisor pointcut-ref="transactionPointcut" --><!--            advice-ref="transactionAdvice" /> --><!--    </aop:config> --></beans>

7.增加项目配置文件

在src/main/resources下新建config.properties

内容：

validationQuery=SELECT 1jdbc.url=jdbc:mysql://localhost:3306/school?useUnicode=true&amp;characterEncoding=utf-8jdbc.username=rootjdbc.password=root

8修改web.xml引入mybatis配置文件

修改web.xml 至如下

<?xml version="1.0" encoding="utf-8"?><!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd"><web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.5" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee                       http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">     <description>最简单的SpringMVC环境抢建</description>    <!-- 加载Srping配置文件 -->    <context-param>     <param-name>contextConfigLocation</param-name>     <param-value>classpath:/spring/applicationContext.xml,classpath:/mybatis/spring-mybatis.xml</param-value>  </context-param>    <!-- Spring 监听 -->    <listener>     <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>   </listener>    <!-- SpringMVC配置 -->    <servlet>     <servlet-name>myspringmvc</servlet-name>      <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>      <!-- 自定义springmvc的配置文件名称和路径 -->      <init-param>       <param-name>contextConfigLocation</param-name>        <param-value>classpath:/springmvc/springmvc-servlet.xml</param-value>     </init-param>   </servlet>    <!-- springmvc 请求后缀 -->    <servlet-mapping>     <servlet-name>myspringmvc</servlet-name>      <url-pattern>*.htmls</url-pattern>   </servlet-mapping>    <welcome-file-list>     <welcome-file>index.jsp</welcome-file>   </welcome-file-list> </web-app>

9.修改spring配置文件引入config.properties

修改applicationContext.xml
内容至如下：

<?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"      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/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             http://www.springframework.org/schema/context             http://www.springframework.org/schema/context/spring-context-3.0.xsd">      <!-- 采用注释的方式配置bean -->        <context:annotation-config />     <!-- 配置要扫描的包 -->        <context:component-scan base-package="com.my1"></context:component-scan>      <!--引入配置属性文件 -->    <context:property-placeholder location="classpath:config.properties" /></beans>

10.业务层加入相关业务类

service包下新建UserServiceImpl.java

内容如下：

package com.my1.service;import java.util.List;import javax.annotation.Resource;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Service;import com.my1.dao.UserInfoMapper;import com.my1.entity.UserInfo;/** * 创建时间�?016-1-27 下午5:22:59 *  * @author andy * @version 2.2 */@Service("userService")public class UserServiceImpl  {    @Resource    private UserInfoMapper userInfoMapper;    public UserInfo getUsers(Integer id) {        return userInfoMapper.selectByPrimaryKey(id);    }}

11.控制层加入控制类

controller包下增加UserController.java

package com.my1.controller;import java.util.List;import javax.annotation.Resource;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.ui.ModelMap;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.ResponseBody;import com.my1.entity.UserInfo;import com.my1.service.UserServiceImpl;/**   * 创建时间�?016-1-28 下午1:17:27   * @author andy   * @version 2.2   */@Controller@RequestMapping("/user")public class UserController {    @Resource    private UserServiceImpl userService;    @RequestMapping("/showInfo/{userId}")    public String showUserInfo(ModelMap modelMap, @PathVariable int userId){        UserInfo userInfo = userService.getUsers(userId);        modelMap.addAttribute("userInfo", userInfo);        return "/user/showInfo";    }}

12.增加显示页面

webapp下WEB-INF下jsp包下增加user包下增加showInfo.jsp
内容：

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%><!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>userInfo</title></head><body>     姓名： ${userInfo.uname}</body></html>