SpringBoot+Mybatis-Generator自动生成

原文链接

1、版本

Spring Boot 1.5.10

mybatis-generator-core 1.3.5

mybatis-generator-maven-plugin 1.3.5

2、项目目录结构

3、配置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.baixin</groupId>
    <artifactId>pms</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

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

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.9.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>
        <!-- 连接池 -->
        <dependency>
            <groupId>com.zaxxer</groupId>
            <artifactId>HikariCP</artifactId>
        </dependency>
        <!-- 数据库 -->
        <dependency><!-- 分页插件 -->
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper</artifactId>
            <version>5.1.2</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis.generator</groupId>
            <artifactId>mybatis-generator-core</artifactId>
            <version>1.3.5</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.0</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>

        <!-- spring-boot -->
        <dependency><!-- 热部署 -->
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <optional>true</optional><!-- true：依赖不会传递 -->
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
            <exclusions>
                <!-- 把tomcat-jdbc连接池排除掉，这样spring-boot就会寻找是否有HikariCP可用 -->
                <exclusion>
                    <groupId>org.apache.tomcat</groupId>
                    <artifactId>tomcat-jdbc</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

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

    <build>
        <plugins>
            <plugin>
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-maven-plugin</artifactId>
                <version>1.3.5</version>
                <executions>
                    <execution>
                        <id>Generate MyBatis Artifacts</id>
                        <phase>package</phase>
                        <goals>
                            <goal>generate</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <!-- generator 工具配置文件的位置 -->
                    <configurationFile>src/main/resources/mybatis/generatorConfig.xml</configurationFile>
                    <!--允许移动生成的文件 -->
                    <verbose>true</verbose>
                    <!-- 是否覆盖 -->
                    <overwrite>true</overwrite>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <fork>true</fork> <!-- fork=true,用于明确表示编译版本配置的可用 -->
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

4、配置自动生成配置文件generatorConfig.xml

<?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="MySQL2Tables" targetRuntime="MyBatis3"
        defaultModelType="flat">
        <commentGenerator>
            <property name="suppressDate" value="true" />
            <property name="suppressAllComments" value="true" />
        </commentGenerator>
        <!--数据库链接地址账号密码 -->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
            connectionURL="jdbc:mysql://192.168.1.180:3306/pms?useSSL=false"
            userId="root" password="123456">
        </jdbcConnection>

        <!-- true：使用BigDecimal对应DECIMAL和 NUMERIC数据类型 -->
        <!-- false：默认, scale>0;length>18：使用BigDecimal; scale=0;length[10,18]：使用Long;
            scale=0;length[5,9]：使用Integer; scale=0;length<5：使用Short; -->
        <javaTypeResolver
            type="org.mybatis.generator.internal.types.JavaTypeResolverDefaultImpl">
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>

        <!--生成Model类存放位置 -->
        <javaModelGenerator targetPackage="com.baixin.pms.entity"
            targetProject="src/main/java">
            <!-- 在targetPackage的基础上，根据数据库的schema再生成一层package，最终生成的类放在这个package下，默认为false -->
            <property name="enableSubPackages" value="true" />
            <!-- 设置是否在getter方法中，对String类型字段调用trim()方法 -->
            <property name="trimStrings" value="true" />

            <!-- for MyBatis3/MyBatis3Simple 自动为每一个生成的类创建一个构造方法，构造方法包含了所有的field；而不是使用setter； -->
            <property name="constructorBased" value="false" />
            <!-- for MyBatis3/MyBatis3Simple 是否创建一个不可变的类，如果为true， 那么MBG会创建一个没有setter方法的类，取而代之的是类似constructorBased的类 -->
            <property name="immutable" value="false" />
        </javaModelGenerator>

        <!--生成映射文件存放位置 -->
        <sqlMapGenerator targetPackage="mappers"
            targetProject="src/main/resources">
            <property name="enableSubPackages" value="true" />
        </sqlMapGenerator>

        <!--生成Dao类存放位置 -->
        <javaClientGenerator type="XMLMAPPER"
            targetPackage="com.baixin.pms.dao" targetProject="src/main/java">
            <property name="enableSubPackages" value="true" />
        </javaClientGenerator>

        <!--生成对应表及类名 -->
        <table tableName="%" enableCountByExample="false"
            enableUpdateByExample="false" enableDeleteByExample="false"
            enableSelectByExample="false" selectByExampleQueryId="false">
            <property name="useActualColumnNames" value="true" />
            <!-- 需要插入时返回主键值，请将此属性打开，column值为主键的列明 -->
            <generatedKey column="id" sqlStatement="MySql" identity="true" />
        </table>
    </context>
</generatorConfiguration>

5、创建自动生成启动类

package com.baixin.pms.config.util;

import java.io.File;
import java.io.IOException;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

import org.mybatis.generator.api.MyBatisGenerator;
import org.mybatis.generator.config.Configuration;
import org.mybatis.generator.config.xml.ConfigurationParser;
import org.mybatis.generator.exception.InvalidConfigurationException;
import org.mybatis.generator.exception.XMLParserException;
import org.mybatis.generator.internal.DefaultShellCallback;

public class MyBatisGeneratorUtil {
    public static void main(String[] args) {
        List<String> warnings = new ArrayList<String>();
        boolean overwrite = true;
        String genCfg = "/generatorConfig.xml";
        File configFile = new File(MyBatisGeneratorUtil.class.getResource(genCfg).getFile());
        ConfigurationParser cp = new ConfigurationParser(warnings);
        Configuration config = null;
        try {
            config = cp.parseConfiguration(configFile);
        } catch (IOException e) {
            e.printStackTrace();
        } catch (XMLParserException e) {
            e.printStackTrace();
        }
        DefaultShellCallback callback = new DefaultShellCallback(overwrite);
        MyBatisGenerator myBatisGenerator = null;
        try {
            myBatisGenerator = new MyBatisGenerator(config, callback, warnings);
        } catch (InvalidConfigurationException e) {
            e.printStackTrace();
        }
        try {
            myBatisGenerator.generate(null);
        } catch (SQLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}

Run As Java Application

刷新看效果，有问题请留言