mybatis-plus-generator简单使用_mybatisplus geroatenter-优快云博客

本文档介绍了如何配置并使用Mybatis-Plus-Generator来自动化生成Java项目代码，包括添加Maven依赖，配置数据源，定义生成规则，以及设置模板引擎等步骤。通过这个工具，可以极大地提高开发效率。

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使用mybatis-plus-generator简单实现自动代码生成，记录下后面好直接使用。

maven添加

 <dependencies>
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-generator</artifactId>
            <version>3.5.1</version>
        </dependency>
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-core</artifactId>
            <version>3.5.1</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
           <version>8.0.27</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-freemarker</artifactId>
             <version>2.7.0</version>
        </dependency>

    </dependencies>

GeneratorUtils相关内容：

package top.smartly.common.utils.generator;

import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.generator.AutoGenerator;
import com.baomidou.mybatisplus.generator.config.*;
import com.baomidou.mybatisplus.generator.config.converts.MySqlTypeConvert;
import com.baomidou.mybatisplus.generator.config.po.LikeTable;
import com.baomidou.mybatisplus.generator.config.querys.MySqlQuery;
import com.baomidou.mybatisplus.generator.config.rules.DateType;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
import com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine;
import com.baomidou.mybatisplus.generator.keywords.MySqlKeyWordsHandler;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;

public class GeneratorUtils {
    /**
     * 生成文件所在项目路径
     */
    private static final String baseProjectPath = "D:\\";

    /**
     * 基本包名
     */
    private static final String basePackage = "top.smartly";
    /**
     * author
     */
    private final String authorName = "";
    /**
     * 数据库配置四要素
     */
    private static final String DRIVER_NAME = "com.mysql.cj.jdbc.Driver";
    private static final String URL = "jdbc:mysql://127.0.0.1:3306/sca?characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useUnicode=true&useSSL=false&serverTimezone=UTC";
    private static final String USERNAME = "root";
    private static final String PASSWORD = "";
	//忽略的表名
    private static final List<String> TABLES_EXCLUDE = Arrays.asList("");;
    static String s = "sca_product_01";
    //需要生成代码的表名
    private static final List<String> TABLES_INFLUD = Arrays.stream(s.split(",")).collect(Collectors.toList());

    public static void main(String[] args) throws ClassNotFoundException, SQLException {
        if (TABLES_INFLUD.size() > 0) {
            new GeneratorUtils().generateByTables(basePackage, TABLES_INFLUD);
        } else {
            Class.forName(DRIVER_NAME);
            Connection connection = DriverManager.getConnection(URL, USERNAME, PASSWORD);
            ResultSet tables = connection.getMetaData().getTables(null, null, "%", new String[]{"TABLE"});
            List<String> t = new ArrayList<>();
            while (tables.next()) {
                String tableName = tables.getString("table_name");
                if (TABLES_EXCLUDE.contains(tableName)) {
                    continue;
                }
                t.add(tableName);
            }

            System.out.println(Arrays.toString(t.toArray()));
            new GeneratorUtils().generateByTables(basePackage, t);
        }
    }


    private void generateByTables(String packageName, List<String> tables) {

        DataSourceConfig dataSourceConfig = new DataSourceConfig.Builder(URL, USERNAME, PASSWORD)
                /*myslq数据库*/
                .dbQuery(new MySqlQuery())
                /*数据库类型转化器*/
                .typeConvert(new MySqlTypeConvert())
                /*数据库关键字处理*/
                .keyWordsHandler(new MySqlKeyWordsHandler())
                .build();
        GlobalConfig globalConfig = new GlobalConfig.Builder()
                /*覆盖已经生成的文件  默认是false*/
                .fileOverride()
                /*指定输出目录*/
                .outputDir(baseProjectPath)
                /*作者名称*/
                .author(authorName)
                /*开启kotlin模式*/
//                .enableKotlin()
                /*开始swagger*/
//                .enableSwagger()
                /*DateType.ONLY_DATE 默认值: DateType.TIME_PAC*/
                .dateType(DateType.TIME_PACK)
                /* 默认值: yyyy-MM-dd*/
                .commentDate("yyyy-MM-dd")
                .build();
        PackageConfig packageConfig = new PackageConfig.Builder()
                /*父包名*/
                .parent(basePackage)
                /* 父包模块名 默认为空*/
                .moduleName("chapter")
                .entity("model.entity")
                .service("service")
                .serviceImpl("service.impl")
                .mapper("mapper")
                .xml("mapper.xml")
                .controller("controller")
                .other("other")
//                .pathInfo(Collections.singletonMap(OutputFile.mapperXml, baseMapperXmlPath))
                .build();

        TemplateConfig templateConfig = new TemplateConfig.Builder().build();

        //注入配置
//        InjectionConfig injectionConfig = new InjectionConfig.Builder()
//                //输出文件之前消费者
//                .beforeOutputFile((tableInfo, objectMap) -> {
//                    System.out.println("tableInfo: " + tableInfo.getEntityName() + " objectMap: " + objectMap.size());
//                })
//                .customMap(Collections.singletonMap("test", "baomidou"))
//                .customFile(Collections.singletonMap("test.txt", "/templates/test.vm"))
//                .build();

        StrategyConfig strategyConfig = new StrategyConfig.Builder()
                .enableCapitalMode()
                .enableSkipView()
                .disableSqlFilter()
//                .likeTable(new LikeTable("USER"))
                .addInclude(tables.toArray(new String[0]))
                .addTablePrefix("sca_")
                .entityBuilder()
                .enableLombok()
                .enableRemoveIsPrefix()
//                .enableTableFieldAnnotation()
                .idType(IdType.AUTO)
                /*驼峰规则*/
                .naming(NamingStrategy.underline_to_camel)
//                .addFieldSuffix("_flag")
                .mapperBuilder()
                .enableMapperAnnotation()
                .build();
        new AutoGenerator(dataSourceConfig)
                .global(globalConfig)
                .packageInfo(packageConfig)
                .strategy(strategyConfig)
                .template(templateConfig)
                .execute(new FreemarkerTemplateEngine());

    }

}