IDEA 使用SpringBoot 整合Mybatis

本文参考：https://blog.csdn.net/winter_chen001/article/details/77249029

项目环境：

• 开发工具：Intellij IDEA 2017.1.3
• springboot: 1.5.6
• jdk：1.8.0_161
• maven:3.3.9

额外功能：

• mybatis generator 自动生成代码插件

步骤： 
1.创建一个springboot项目：

2.创建项目的文件结构以及jdk的版本 

3.选择项目所需要的依赖 

然后点击finish

5.看一下文件的结构：

6.查看一下pom.xml：

<?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.zzg</groupId>
    <artifactId>blog</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>blog</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.4.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.2</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.11</version>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!-- 分页插件 -->
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper-spring-boot-starter</artifactId>
            <version>1.2.5</version>
        </dependency>

        <!-- alibaba的druid数据库连接池 -->
        <!--<dependency>-->
            <!--<groupId>com.alibaba</groupId>-->
            <!--<artifactId>druid-spring-boot-starter</artifactId>-->
            <!--<version>1.1.10</version>-->
        <!--</dependency>-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.0</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <!-- mybatis generator 自动生成代码插件 -->
            <plugin>
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-maven-plugin</artifactId>
                <version>1.3.5</version>
                <configuration>
                    <!--  mybatis-generator 配置文件存放地址 -->
                    <configurationFile>src/main/resources/generatorConfig.xml</configurationFile>
                    <overwrite>true</overwrite>
                </configuration>
                <dependencies>
                    <dependency>
                        <groupId>mysql</groupId>
                        <artifactId>mysql-connector-java</artifactId>
                        <version>8.0.11</version>
                    </dependency>
                </dependencies>
            </plugin>
        </plugins>
    </build>
</project>

7、创建一个新的application.yml配置文件，文件内容如下：

server:
  port: 8080

spring:
    datasource:
        name: blog
        url: jdbc:mysql://localhost:3306/blog?serverTimezone=GMT%2B8
        username: root
        password: 123456
        # 使用druid数据源
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: com.mysql.cj.jdbc.Driver
        filters: stat
        maxActive: 20
        initialSize: 1
        maxWait: 60000
        minIdle: 1
        timeBetweenEvictionRunsMillis: 60000
        minEvictableIdleTimeMillis: 300000
        validationQuery: select 'x'
        testWhileIdle: true
        testOnBorrow: false
        testOnReturn: false
        poolPreparedStatements: true
        maxOpenPreparedStatements: 20

## 该配置节点为独立的节点，有很多同学容易将这个配置放在spring的节点下，导致配置无法被识别
mybatis:
  mapper-locations: classpath:sqlMap/*.xml  #注意：一定要对应mapper映射xml文件的所在路径
  type-aliases-package: com.zzg.pojo  # 注意：对应实体类的路径

8、使用mybatis generator 自动生成代码：

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN" "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd" >
<generatorConfiguration>
    <context id="context1" targetRuntime="MyBatis3">
        <commentGenerator>
            <!-- 是否去除自动生成的注释 true：是 ： false:否 -->
            <property name="suppressAllComments" value="true" />
        </commentGenerator>

        <jdbcConnection driverClass="com.mysql.cj.jdbc.Driver"
                        connectionURL="jdbc:mysql://localhost:3306/blog?serverTimezone=GMT%2B8"
                        userId="root" password="123456" />
        <javaModelGenerator targetPackage="com.zzg.pojo"
                            targetProject="src/main/java">
            <property name="enableSubPackages" value="true" />
            <property name="trimStrings" value="true" />
        </javaModelGenerator>

        <sqlMapGenerator targetPackage="sqlMap"
                         targetProject="src/main/resources">
            <property name="enableSubPackages" value="true" />
        </sqlMapGenerator>

        <javaClientGenerator type="XMLMAPPER" targetPackage="com.zzg.dao"
                             targetProject="src/main/java">
            <property name="enableSubPackages" value="true" />
        </javaClientGenerator>

        <table tableName="sys_permission" domainObjectName="Permission"
               enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false"
               enableSelectByExample="false" selectByExampleQueryId="false" >
            <property name="useActualColumnNames" value="true"/>
        </table>
        <table tableName="sys_permission_role" domainObjectName="PermissionRoleRelation"
               enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false"
               enableSelectByExample="false" selectByExampleQueryId="false" >
            <property name="useActualColumnNames" value="true"/>
        </table>
        <table tableName="sys_role" domainObjectName="Role"
               enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false"
               enableSelectByExample="false" selectByExampleQueryId="false" >
            <property name="useActualColumnNames" value="true"/>
        </table>
        <table tableName="sys_role_user" domainObjectName="RoleUserRelation"
               enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false"
               enableSelectByExample="false" selectByExampleQueryId="false" >
            <property name="useActualColumnNames" value="true"/>
        </table>
        <table tableName="sys_user" domainObjectName="User"
               enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false"
               enableSelectByExample="false" selectByExampleQueryId="false" >
            <property name="useActualColumnNames" value="true"/>
        </table>

    </context>
</generatorConfiguration>

 点击:项目->Run Maven->Plugins ->Mybatis-generator:generator 进行代码生成。

这里就不做过多的展示，直接提供码云的git 地址: