Springboot Mybatis Plus自動生成工具類詳解代碼

<dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.4.1</version>
        </dependency>
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-generator</artifactId>
            <version>3.4.1</version>
        </dependency>
        <dependency>
            <groupId>org.freemarker</groupId>
            <artifactId>freemarker</artifactId>
            <version>2.3.30</version>
        </dependency>

package com.his.utils;

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;

/**
 * Mybatis plus代碼自動生成
 */
public class MybatisPlusUtil {
    /** 作者 */
    public static final String AUTHOR = "dd";

    /** 類命名 */
    /**
     * Entity命名
     */
    public static final String FILE_NAME_ENTITY = "%sEntity";
    /**
     * MAPPER命名
     */
    public static final String FILE_NAME_MAPPER = "%sMapper";
    /**
     * xml命名
     */
    public static final String FILE_NAME_XML = "%sMapper";
    /**
     * Service命名
     */
    public static final String FILE_NAME_SERVICE = "%sService";
    /**
     * ServiceImpl命名
     */
    public static final String FILE_NAME_SERVICE_IMPL = "%sDO";
    /**
     * Controller命名
     */
    public static final String FILE_NAME_CONTROLLER = "%sController";

    /**
     包命名，可以根據自己的項目情況自定義生成後的存放路徑
     entity默認路徑為父目錄.entity
     mapper默認路徑為父目錄.mapper
     service默認路徑為父目錄.service
     serviceImpl默認路徑為父目錄.service.impl
     controller默認路徑為父目錄.controller
     */
    /**
     * PARENT命名
     */
    public static final String PACKAGE_NAME_PARENT = "com.his";
    /**
     * Entity命名
     */
    public static final String PACKAGE_NAME_ENTITY = "repository.entity.control";
    /**
     * MAPPER命名
     */
    public static final String PACKAGE_NAME_MAPPER = "repository.mapper.control";
    /**
     * xml命名
     */
    public static final String PACKAGE_NAME_XML = "sys";
    /**
     * Service命名
     */
    public static final String PACKAGE_NAME_SERVICE = "domain.control";
    /**
     * ServiceImpl命名
     */
    public static final String PACKAGE_NAME_SERVICE_IMPL = "domain.control";
    /**
     * Controller命名
     */
    public static final String PACKAGE_NAME_CONTROLLER = "facade.controller.control";

    /**
     * 讀取控制臺內容
     */
    private static String scanner(String tip) {
        Scanner scanner = new Scanner(System.in);
        StringBuilder help = new StringBuilder();
        help.append("請輸入" + tip + "：");
        System.out.println(help.toString());
        if (scanner.hasNext()) {
            String ipt = scanner.next();
            if (StringUtils.isNotBlank(ipt)) {
                return ipt;
            }
        }
        throw new MybatisPlusException("請輸入正確的" + tip + "！");
    }

    /**
     * 運行這個main方法進行代碼生成
     */
    public static void main(String[] args) {
        // 代碼生成器
        AutoGenerator mpg = new AutoGenerator();

        // 全局配置
        GlobalConfig gc = new GlobalConfig();
        String projectPath = System.getProperty("user.dir");
        gc.setOutputDir(projectPath + "/src/main/java");
        gc.setFileOverride(true);
        gc.setAuthor(AUTHOR);
        gc.setOpen(false);
        gc.setActiveRecord(false);// 不需要ActiveRecord特性的請改為false
        gc.setEnableCache(false);// XML 二級緩存
        gc.setSwagger2(true); // 實體屬性 Swagger2 註解
        gc.setBaseResultMap(true);
        gc.setBaseColumnList(true);

        gc.setEntityName(FILE_NAME_ENTITY);
        gc.setMapperName(FILE_NAME_MAPPER);
        gc.setXmlName(FILE_NAME_XML);
        gc.setServiceName(FILE_NAME_SERVICE);
        gc.setServiceImplName(FILE_NAME_SERVICE_IMPL);
        gc.setControllerName(FILE_NAME_CONTROLLER);
        mpg.setGlobalConfig(gc);

        // 數據源配置
        DataSourceConfig dsc = new DataSourceConfig();
        dsc.setUrl("jdbc:oracle:thin:@ip:port/test");
        dsc.setDriverName("oracle.jdbc.OracleDriver");
        dsc.setUsername("user");
        dsc.setPassword("pass");
        mpg.setDataSource(dsc);

        //包配置
        PackageConfig pc = new PackageConfig();
        pc.setModuleName(null);
        pc.setParent(PACKAGE_NAME_PARENT);
        pc.setController(PACKAGE_NAME_CONTROLLER);
        pc.setService(PACKAGE_NAME_SERVICE);
        pc.setServiceImpl(PACKAGE_NAME_SERVICE_IMPL);
        pc.setMapper(PACKAGE_NAME_MAPPER);
        pc.setEntity(PACKAGE_NAME_ENTITY);
        pc.setXml(PACKAGE_NAME_XML);
        mpg.setPackageInfo(pc);

        // 策略配置
        StrategyConfig strategy = new StrategyConfig();
        strategy.setNaming(NamingStrategy.underline_to_camel);
        strategy.setColumnNaming(NamingStrategy.underline_to_camel);
        //strategy.setEntityLombokModel(true);
        strategy.setRestControllerStyle(true);
        strategy.setInclude(scanner("表名，多個英文逗號分割").split(","));
        strategy.setControllerMappingHyphenStyle(true);
        // 設置表前綴
        strategy.setTablePrefix("IEMR_");
        mpg.setStrategy(strategy);
        mpg.setTemplateEngine(new FreemarkerTemplateEngine());

        // 自定義配置
        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";
        // 如果模板引擎是 velocity
        // String templatePath = "/templates/mapper.xml.vm";

        // 自定義輸出配置
        List<FileOutConfig> focList = new ArrayList<>();
        // 自定義配置會被優先輸出
        focList.add(new FileOutConfig(templatePath) {
            @Override
            public String outputFile(TableInfo tableInfo) {
                // 自定義輸出文件名 ， 如果你 Entity 設置瞭前後綴、此處註意 xml 的名稱會跟著發生變化！！
                return projectPath + "/src/main/resources/mapper/"
                        + "/" + tableInfo.getMapperName() + StringPool.DOT_XML;
            }
        });
        cfg.setFileOutConfigList(focList);
        mpg.setCfg(cfg);

        // 配置模板
        TemplateConfig templateConfig = new TemplateConfig();
        templateConfig.setXml(null);
        mpg.setTemplate(templateConfig);

        mpg.execute();
    }
}