Springboot整合MybatisPlus

1、pom文件

<?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.cun</groupId>
    <artifactId>plus</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

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

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.14.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-web</artifactId>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <!-- https://mvnrepository.com/artifact/com.baomidou/mybatis-plus-boot-starter -->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>2.3</version>
        </dependency>
        <!-- 代码生成器默认使用如下模版引擎 -->
<!--        <dependency>
            <groupId>org.apache.velocity</groupId>
            <artifactId>velocity-engine-core</artifactId>
            <version>2.0</version>
        </dependency>-->
        <!-- freemarker 模板引擎 -->
        <dependency>
            <groupId>org.freemarker</groupId>
            <artifactId>freemarker</artifactId>
            <version>2.3.28</version>
        </dependency>


        <!--Druid-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.10</version>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>


</project>

2、创建CodeGenerator.java

package com.cun.plus;

import com.baomidou.mybatisplus.enums.IdType;
import com.baomidou.mybatisplus.generator.AutoGenerator;
import com.baomidou.mybatisplus.generator.config.DataSourceConfig;
import com.baomidou.mybatisplus.generator.config.GlobalConfig;
import com.baomidou.mybatisplus.generator.config.PackageConfig;
import com.baomidou.mybatisplus.generator.config.StrategyConfig;
import com.baomidou.mybatisplus.generator.config.rules.DbType;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
import com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine;

public class CodeGenerator {
    public static void main(String[] args) {
        //1. 全局配置
        GlobalConfig config = new GlobalConfig();
        config.setActiveRecord(false) // 是否支持AR模式
                .setAuthor("len") // 作者
                .setOutputDir(".\\src\\main\\java") // 生成路径
                .setFileOverride(true)  // 文件覆盖
                .setIdType(IdType.AUTO) // 主键策略
                .setServiceName("I%sService")  // 设置生成的service接口的名字的首字母是否为I
                // IUserService
                .setBaseResultMap(true)
                .setBaseColumnList(true);

        //2. 数据源配置
        DataSourceConfig dsConfig = new DataSourceConfig();
        dsConfig.setDbType(DbType.MYSQL)  // 设置数据库类型
                .setDriverName("com.mysql.jdbc.Driver")
                .setUrl("jdbc:mysql://localhost:3306/mydatab?useSSL=true&verifyServerCertificate=false&allowMultiQueries=true&useUnicode=true&characterEncoding=UTF-8")
                .setUsername("root")
                .setPassword("lqq74561");

        //3. 策略配置

        //配置要生成的表的表名
        String[] tableName = {"system_power_type","system_admin","company","power_api","power_action","power_action_api","power_action_group","power_admin_group","power_group"};
        StrategyConfig stConfig = new StrategyConfig();
        stConfig.setCapitalMode(true) //全局大写命名
                .setDbColumnUnderline(true)  // 指定表名 字段名是否使用下划线
                .setNaming(NamingStrategy.underline_to_camel) // 数据库表映射到实体的命名策略
                .setTablePrefix("tb_")
                .setInclude(tableName);  // 生成的表

        //4. 包名策略配置
        PackageConfig pkConfig = new PackageConfig();
        pkConfig.setParent("com.cun.plus")
                .setMapper("mapper")
                .setService("service")
                .setController("controller")
                .setEntity("entity")
                .setXml("mapper");

        //5. 整合配置
        AutoGenerator ag = new AutoGenerator();
        ag.setGlobalConfig(config)
                .setDataSource(dsConfig)
                .setStrategy(stConfig)
                .setPackageInfo(pkConfig);

        //6. 执行
        ag.setTemplateEngine(new FreemarkerTemplateEngine());
        ag.execute();
    }
}

3、在application.yml中配置mybatis-plus

#mybatis-plus
mybatis-plus:
  #xml
  mapper-locations: classpath:/mapper/*Mapper.xml
  #bean
  typeAliasesPackage: com.cun.plus.entity
  global-config:
    # 3:"UUID";
    id-type: 3
    field-strategy: 2
    db-column-underline: true
    key-generator: com.baomidou.mybatisplus.incrementer.OracleKeyGenerator
    logic-delete-value: 1
    logic-not-delete-value: 0
    sql-injector: com.baomidou.mybatisplus.mapper.LogicSqlInjector
  configuration:
    map-underscore-to-camel-case: true
    cache-enabled: false
    #JdbcTypeForNull
    jdbc-type-for-null: 'null'

4、创建MybatisPlusConfig.java文件

package com.cun.plus.conf;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Configuration;


@Configuration
@MapperScan("com.cun.plus.mapper")
public class MybatisPlusConfig {

}

其他

Wrapper：MP内置条件封装器。

Sql分析器：（MybatisPlusConfig.java中）

/**
 * SQL执行效率插件
 */
@Bean
@Profile({"dev","test"})// 设置 dev test 环境开启
public PerformanceInterceptor performanceInterceptor() {
    return new PerformanceInterceptor();
}