SpringMvc 整合mybatis项目搭建

1.使用idea创建maven项目

2.在项目src目录下 添加java文件夹 并设置类型为sources,添加resource文件夹 设置为resources

4.修改pom文件 添加引用

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

<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/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.itstudy</groupId>
    <artifactId>myweb</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>

    <name>myweb Maven Webapp</name>
    <url>http://www.example.com</url>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>4.3.6.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>4.3.6.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>4.3.6.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>4.3.6.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>4.3.6.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>4.3.6.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>4.3.6.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.4.1</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.0</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.39</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.7</version>
        </dependency>

        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.0.1</version>
            <scope>provided</scope>
        </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>
    </dependencies>

    <build>
        <finalName>myweb</finalName>

        <plugins>
            <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
                <configuration>
                    <port>8080</port>
                    <path>/</path>
                    <uriEncoding>UTF-8</uriEncoding>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

5.修改web.xml

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee                      http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1" metadata-complete="true">
  <!-- 如果是用mvn命令生成的xml，需要修改servlet版本为3.1 -->
  <!-- 配置DispatcherServlet -->
  <servlet>
    <servlet-name>springMvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <!-- 配置springMVC需要加载的配置文件                  spring-dao.xml,spring-service.xml,spring-web.xml                  Mybatis - > spring -> springmvc          -->
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:spring-*.xml</param-value>
    </init-param>
  </servlet>
  <servlet-mapping>
    <servlet-name>springMvc</servlet-name>
    <!-- 默认匹配所有的请求 -->
    <url-pattern>/</url-pattern>
  </servlet-mapping>
</web-app>

6.配置mybatis 

在resources文件夹中 添加mybatis-config.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <!-- 配置全局属性 -->
    <settings>
        <!-- 使用jdbc的getGeneratedKeys获取数据库自增主键值 -->
        <setting name="useGeneratedKeys" value="true" />
        <!-- 使用列别名替换列名 默认:true -->
        <setting name="useColumnLabel" value="true" />
        <!-- 开启驼峰命名转换:Table{create_time} -> Entity{createTime} -->
        <setting name="mapUnderscoreToCamelCase" value="true" />
    </settings>
</configuration>

7.配置mybatis-spring

7.1.在resources文件夹中 添加spring-dao.xml

<?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">
    <!-- 配置整合mybatis过程 -->
    <!-- 1.配置数据库相关参数properties的属性：${url} -->
    <context:property-placeholder location="classpath:jdbc.properties" />

    <!-- 2.数据库连接池 -->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"
          destroy-method="close">
        <!-- 数据库基本信息配置 -->
        <property name="url" value="${jdbc.url}" />
        <property name="username" value="${jdbc.username}" />
        <property name="password" value="${jdbc.password}" />
        <property name="driverClassName" value="${jdbc.driverClassName}" />
        <property name="filters" value="${jdbc.filters}" />
        <!-- 最大并发连接数 -->
        <property name="maxActive" value="${jdbc.maxActive}" />
        <!-- 初始化连接数量 -->
        <property name="initialSize" value="${jdbc.initialSize}" />
        <!-- 配置获取连接等待超时的时间 -->
        <property name="maxWait" value="${jdbc.maxWait}" />
        <!-- 最小空闲连接数 -->
        <property name="minIdle" value="${jdbc.minIdle}" />
        <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 -->
        <property name="timeBetweenEvictionRunsMillis" value="${jdbc.timeBetweenEvictionRunsMillis}" />
        <!-- 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="${jdbc.minEvictableIdleTimeMillis}" />
        <property name="validationQuery" value="${jdbc.validationQuery}" />
        <property name="testWhileIdle" value="${jdbc.testWhileIdle}" />
        <property name="testOnBorrow" value="${jdbc.testOnBorrow}" />
        <property name="testOnReturn" value="${jdbc.testOnReturn}" />
        <property name="maxOpenPreparedStatements" value="${jdbc.maxOpenPreparedStatements}" />
        <!-- 打开removeAbandoned功能 -->
        <property name="removeAbandoned" value="${jdbc.removeAbandoned}" />
        <!-- 1800秒，也就是30分钟 -->
        <property name="removeAbandonedTimeout" value="${jdbc.removeAbandonedTimeout}" />
        <!-- 关闭abanded连接时输出错误日志 -->
        <property name="logAbandoned" value="${jdbc.logAbandoned}" />
    </bean>

    <!-- 3.配置SqlSessionFactory对象 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 注入数据库连接池 -->
        <property name="dataSource" ref="dataSource" />
        <!-- 配置MyBaties全局配置文件:mybatis-config.xml -->
        <property name="configLocation" value="classpath:mybatis-config.xml" />
        <!-- 扫描entity包 使用别名 -->
        <property name="typeAliasesPackage" value="com.soecode.lyf.entity" />
        <!-- 扫描sql配置文件:mapper需要的xml文件 -->
        <property name="mapperLocations" value="classpath:mapper/*.xml" />
    </bean>

    <!-- 4.配置扫描Dao接口包，动态实现Dao接口，注入到spring容器中 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- 注入sqlSessionFactory -->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
        <!-- 给出需要扫描Dao接口包 -->
        <property name="basePackage" value="com.soecode.lyf.dao" />
    </bean>
</beans>

7.2在resources文件夹中 添加jdbc.properties

jdbc.url:jdbc:mysql://localhost:3306/dbname
jdbc.driverClassName:com.mysql.jdbc.Driver
jdbc.username:root
jdbc.password:password
jdbc.filters:stat
jdbc.maxActive:20
jdbc.initialSize:1
jdbc.maxWait:60000
jdbc.minIdle:10
jdbc.maxIdle:15
jdbc.timeBetweenEvictionRunsMillis:60000
jdbc.minEvictableIdleTimeMillis:300000
jdbc.validationQuery:SELECT 'x'
jdbc.testWhileIdle:true
jdbc.testOnBorrow:false
jdbc.testOnReturn:false
jdbc.maxOpenPreparedStatements:20
jdbc.removeAbandoned:true
jdbc.removeAbandonedTimeout:1800
jdbc.logAbandoned:true

7.3在resources文件夹中 创建mapper文件夹 并添加相关的mapper文件(以用户表为示例)

UserMapper.xml

<?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.itstudy.dao.UserMapper" >
    <resultMap id="BaseResultMap" type="com.itstudy.domain.UserInfo" >
        <id column="id" property="id" jdbcType="BIGINT" />
        <result column="name" property="name" jdbcType="VARCHAR" />
        <result column="email" property="email" jdbcType="VARCHAR" />
        <result column="psncode" property="psncode" jdbcType="VARCHAR" />
        <result column="corp_name" property="corpName" jdbcType="VARCHAR" />
        <result column="dept_name" property="deptName" jdbcType="VARCHAR" />
        <result column="add_time" property="addTime" jdbcType="VARCHAR" />
        <result column="remark" property="remark" jdbcType="VARCHAR" />
    </resultMap>

    <insert id="insert" parameterType="com.itstudy.domain.UserInfo" >
        insert into sys_user (id, name, email,psncode,corp_name,dept_name,add_time,remark)
        values (#{id,jdbcType=BIGINT}, #{name,jdbcType=VARCHAR}, #{email,jdbcType=VARCHAR},
        #{psncode,jdbcType=VARCHAR}, #{corp_name,jdbcType=VARCHAR}, #{dept_name,jdbcType=VARCHAR},
        #{add_time,jdbcType=VARCHAR}, #{remark,jdbcType=VARCHAR})
    </insert>

    <update id="update" parameterType="com.itstudy.domain.UserInfo" >
        update sys_admin set id=#{id,jdbcType=BIGINT},
        name = #{name,jdbcType=VARCHAR},
        email=#{email,jdbcType=VARCHAR},
        psncode=#{psncode,jdbcType=VARCHAR},
        corp_name=#{corp_name,jdbcType=VARCHAR},
        dept_name=#{dept_name,jdbcType=VARCHAR},
        add_time=#{add_time,jdbcType=VARCHAR},
        remark=#{remark,jdbcType=VARCHAR}
        where id = #{id,jdbcType=BIGINT}
    </update>

    <delete id="delete" parameterType="int">
        delete from sys_admin where id = #{id}
    </delete>


    <select id="findByPsncode" parameterType="String" resultMap="BaseResultMap">
        select * from sys_admin where psncode=#{psncode}
    </select>
    <select id="findByEmail" parameterType="String" resultMap="BaseResultMap">
        select * from sys_admin where email=#{email}
    </select>

</mapper>

8.配置spring 在resources文件中 添加spring-web.xml ，spring-service.xml ，spring-dao.xml

8.1 spring-web.xml

<?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:mvc="http://www.springframework.org/schema/mvc"
       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
       http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    <!-- 配置SpringMVC -->
    <!-- 1.开启SpringMVC注解模式 -->
    <!-- 简化配置：           (1)自动注册DefaultAnootationHandlerMapping,AnotationMethodHandlerAdapter           (2)提供一些列：数据绑定，数字和日期的format @NumberFormat, @DateTimeFormat, xml,json默认读写支持   -->
    <mvc:annotation-driven/>

    <!-- 2.静态资源默认servlet配置          (1)加入对静态资源的处理：js,gif,png          (2)允许使用"/"做整体映射  -->
    <mvc:default-servlet-handler/>

    <!-- 3.配置jsp 显示ViewResolver -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

    <!-- 4.扫描web相关的bean -->
    <context:component-scan base-package="com.itstudy.controller"/>
</beans>

8.2 spring-service.xml

<?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:tx="http://www.springframework.org/schema/tx"
       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      http://www.springframework.org/schema/tx      http://www.springframework.org/schema/tx/spring-tx.xsd">
    <!-- 扫描service包下所有使用注解的类型 -->
    <context:component-scan base-package="com.itstudy.service" />

    <!-- 配置事务管理器 -->
    <bean id="transactionManager"
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!-- 注入数据库连接池 -->
        <property name="dataSource" ref="dataSource" />
    </bean>

    <!-- 配置基于注解的声明式事务 -->
    <tx:annotation-driven transaction-manager="transactionManager" />
</beans>

9.项目目录结构

10.项目启动

11.示例代码下载

https://pan.baidu.com/s/1odw03XXLBV0wUqj_yduC8A

链接: https://pan.baidu.com/s/1mojF3FLVxhUBDZfrUuaxXQ 密码: h95w