MyBatis-Plus 的代码生成器

代码直接copy就能使用

package com.test;

import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.core.exceptions.MybatisPlusException;
import com.baomidou.mybatisplus.core.toolkit.StringPool;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.baomidou.mybatisplus.generator.AutoGenerator;
import com.baomidou.mybatisplus.generator.InjectionConfig;
import com.baomidou.mybatisplus.generator.config.*;
import com.baomidou.mybatisplus.generator.config.po.TableInfo;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
import com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine;

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class CodeGenerator {

    // TODO 文件目录,本地要存在，否则报错
    public static String projectPath = System.getProperty("user.dir")+"/test/src/main/java";

    //总包名
    public static String parentPackage = "com.test";

    // 读取控制台内容
    public static String scanner(String tip) {
        Scanner scanner = new Scanner(System.in);
        StringBuilder help = new StringBuilder();
        help.append("请输入" + tip + "：");
        System.out.println(help.toString());
        if (scanner.hasNext()) {
            String ipt = scanner.next();
            if (StringUtils.isNotEmpty(ipt)) {
                return ipt;
            }
        }
        throw new MybatisPlusException("请输入正确的" + tip + "！");
    }

    //全局配置
    private  static GlobalConfig globalConfig(){
        GlobalConfig gc = new GlobalConfig();
        gc.setAuthor("jgYang")  //生成的文件头@author
                .setOutputDir(projectPath)   //代码文件生成路径
                .setFileOverride(true) //文件是否覆盖
                .setIdType(IdType.ID_WORKER_STR) // 主键策略
                .setServiceName("I%sService") //是否去掉Service接口命名开头的I
                .setBaseColumnList(true) // 是否生成基本的sql列
                .setSwagger2(true) //实体属性 Swagger2 注解
        ;
        return gc;
    }

    //数据源配置
    private static DataSourceConfig dataSourceConfig(){
        DataSourceConfig dsc = new DataSourceConfig();
        dsc.setUrl("jdbc:mysql://localhost:3306/account?useUnicode=true&characterEncoding=UTF-8&useSSL=false&serverTimezone=GMT%2B8&rewriteBatchedStatements=true");
        dsc.setDriverName("com.mysql.cj.jdbc.Driver");
        dsc.setUsername("root");
        dsc.setPassword("123456");
        return dsc;
    }

    // 包配置
    private static PackageConfig packageConfig() {
        PackageConfig packageConfig = new PackageConfig();
        packageConfig.setParent(parentPackage); // 总包名
        packageConfig.setEntity("entity");     // 实体包名
        packageConfig.setController("controller");  //控制器包名
        packageConfig.setService("service");    //业务包名
        packageConfig.setMapper("mapper");      //Mapper包名
        return packageConfig;
    }

    //自定义配置
    private static InjectionConfig injectionConfig() {
        // 自定义配置
        InjectionConfig cfg = new InjectionConfig() {
            @Override
            public void initMap() {
                // to do nothing
            }
        };

        // 如果模板引擎是 freemarker
        String templatePath = "/templates/mapper.xml.ftl";

        // 自定义输出配置
        List<FileOutConfig> focList = new ArrayList<>();
        // 自定义配置会被优先输出
        focList.add(new FileOutConfig(templatePath) {
            @Override
            public String outputFile(TableInfo tableInfo) {
                // 自定义输出文件名 ， 如果你 Entity 设置了前后缀、此处注意 xml 的名称会跟着发生变化！！
                return projectPath + "/" +parentPackage.replace(".","/") + "/" +packageConfig().getMapper() + "/xml/" + tableInfo.getEntityName() + "Mapper" + StringPool.DOT_XML;
            }
        });
        cfg.setFileOutConfigList(focList);
        return cfg;
    }

    // 策略配置
    private static StrategyConfig strategyConfig(){
        StrategyConfig strategy = new StrategyConfig();
        strategy.setNaming(NamingStrategy.underline_to_camel);
        strategy.setColumnNaming(NamingStrategy.underline_to_camel);
        strategy.setEntityBuilderModel(true);
        strategy.setEntityLombokModel(true);
        strategy.setRestControllerStyle(true);
        strategy.setInclude(scanner("表名，多个英文逗号分割").split(","));
        strategy.setControllerMappingHyphenStyle(true);
        return strategy;
    }

    public static void main(String[] args) {
        System.out.println(System.getProperty("user.dir"));
        // 代码生成器
        AutoGenerator mpg = new AutoGenerator();
        // 全局配置
        mpg.setGlobalConfig(globalConfig());
        // 数据源配置
        mpg.setDataSource(dataSourceConfig());
        // 包配置
        mpg.setPackageInfo(packageConfig());
        // 自定义配置
        mpg.setCfg(injectionConfig());
        // 配置模板
        mpg.setTemplate(new TemplateConfig().setXml(null));
        // 策略配置
        mpg.setStrategy(strategyConfig());
        mpg.setTemplateEngine(new FreemarkerTemplateEngine());
        mpg.execute();
    }
}

常见错误

Exception in thread "main" java.lang.NoClassDefFoundError: freemarker/template/Configuration
at com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine.init(FreemarkerTemplateEngine.java:41)
at com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine.init(FreemarkerTemplateEngine.java:34)
at com.baomidou.mybatisplus.generator.AutoGenerator.execute(AutoGenerator.java:103)
at com.dream.road.CodeGenerator.main(CodeGenerator.java:136)
Caused by: java.lang.ClassNotFoundException: freemarker.template.Configuration
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

 

<dependency>
    <groupId>org.freemarker</groupId>
    <artifactId>freemarker</artifactId>
    <version>2.3.28</version>
    <scope>compile</scope>
</dependency>