mybatisPlus代码生成工具-蒲公英云

手敲entity、dao、mapper.xml、service、controller的老套路，不仅让人厌倦，还严重影响开发效率。作为开发，不是应该更专注业务功能的实现吗？

毕竟这些无关业务逻辑，要是给个表名，就有个现成的CRUD代码就好了！

这不，mybatisplus提供了代码生成器，轻松生成mvc三层代码。

首先，引入pom文件

<dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.0.6</version>
        </dependency>
        <dependency>
            <groupId>org.apache.velocity</groupId>
            <artifactId>velocity-engine-core</artifactId>
            <version>2.1</version>
        </dependency>

然后，代码生成器如下：

package domain;
import com.baomidou.mybatisplus.annotation.DbType;
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.NamingStrategy;
import com.baomidou.mybatisplus.generator.engine.VelocityTemplateEngine;
/**
 * 生成代码工具
 */
public class Generate {
    public static void main(String[] args) {
        Generate g = new Generate();
        boolean startWithI = true;
        String projectName = "Demo";
        String packageName = "com.xp.boot.web";
        String tableName = "test_log";
        g.generateByTables(startWithI,projectName,packageName,tableName);
    }
    /**
     * 根据表自动生成
     *
     * @param serviceNameStartWithI 默认为false
     * @param packageName           包名
     * @param tableNames            表名
     */
    private void generateByTables(boolean serviceNameStartWithI,String projectName, String packageName, String... tableNames) {
        //配置数据源
        DataSourceConfig dataSourceConfig = getDataSourceConfig();
        // 策略配置
        StrategyConfig strategyConfig = getStrategyConfig(tableNames);
        //全局变量配置
        GlobalConfig globalConfig = getGlobalConfig(serviceNameStartWithI,projectName);
        //包名配置
        PackageConfig packageConfig = getPackageConfig(packageName);
        //自动生成
        atuoGenerator(dataSourceConfig, strategyConfig, globalConfig, packageConfig);
    }
    /**
     * 集成
     *
     * @param dataSourceConfig 配置数据源
     * @param strategyConfig   策略配置
     * @param config           全局变量配置
     * @param packageConfig    包名配置
     */
    private void atuoGenerator(DataSourceConfig dataSourceConfig, StrategyConfig strategyConfig, GlobalConfig config, PackageConfig packageConfig) {
        new AutoGenerator()
                .setGlobalConfig(config)
                .setDataSource(dataSourceConfig)
                .setStrategy(strategyConfig)
                .setPackageInfo(packageConfig)
                .setTemplateEngine(new VelocityTemplateEngine())
                .execute();
    }
    /**
     * 设置包名
     *
     * @param packageName 父路径包名
     * @return PackageConfig 包名配置
     */
    private PackageConfig getPackageConfig(String packageName) {
        return new PackageConfig()
                .setParent(packageName)
                .setXml("mapper")
                .setMapper("mapper")
                .setController("controller")
                .setService("service")
                .setEntity("entity");
    }
    /**
     * 全局配置
     *
     * @param serviceNameStartWithI false
     * @return GlobalConfig
     */
    private GlobalConfig getGlobalConfig(boolean serviceNameStartWithI,String projectName) {
        GlobalConfig globalConfig = new GlobalConfig();
        globalConfig
                .setBaseColumnList(true)
                .setBaseResultMap(true)
                .setActiveRecord(false)
                .setAuthor("尼古拉斯-肖")
                //设置输出路径
                .setOutputDir(System.getProperty("user.dir")+"/"+projectName+"/src/main/java/")
                .setFileOverride(true);
        if (!serviceNameStartWithI) {
            //设置service名
            globalConfig.setServiceName("%sService");
        }
        return globalConfig;
    }
    /**
     * 策略配置
     *
     * @param tableNames 表名
     * @return StrategyConfig
     */
    private StrategyConfig getStrategyConfig(String... tableNames) {
        return new StrategyConfig()
                // 全局大写命名 ORACLE 注意
                .setCapitalMode(true)
                .setEntityLombokModel(true)
                .setRestControllerStyle(false)
                //从数据库表到文件的命名策略
                .setNaming(NamingStrategy.underline_to_camel)
                .setColumnNaming(NamingStrategy.underline_to_camel)
                //需要生成的的表名，多个表名传数组
                .setInclude(tableNames);
    }
    /**
     * 配置数据源
     *
     * @return 数据源配置 DataSourceConfig
     */
    private DataSourceConfig getDataSourceConfig() {
        return new DataSourceConfig().setDbType(DbType.MYSQL)
                .setUrl("jdbc:mysql://localhost:3306/test?serverTimezone=Hongkong&nullCatalogMeansCurrent=true&characterEncoding=UTF-8&useSSL=false")
                .setUsername("root")
                .setPassword("123456")
                .setDriverName("com.mysql.cj.jdbc.Driver");
    }
}