代码工具箱

Mybatis-plus工具

Mybatis-plus自动生成代码

package com.lixiang.tron;

import com.baomidou.mybatisplus.core.toolkit.StringPool;
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 org.junit.jupiter.api.Test;

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

/**
 *  代码生成工具
 */
public class CodeUtil {

    public static void generate(String toPackage, String author, String... include) {
        // 代码生成器
        AutoGenerator mpg = new AutoGenerator();
        // 全局配置
        GlobalConfig gc = new GlobalConfig();
        String projectPath = System.getProperty("user.dir");
        gc.setOutputDir(projectPath + "/mybatis-plus-generate/code/java");
        gc.setFileOverride(false);
        gc.setAuthor(author);
        gc.setOpen(false);
        gc.setEntityName("%sDO");
        gc.setServiceName("%sDAO");
        gc.setServiceImplName("%sDAOImpl");
        // 实体属性 Swagger2 注解
        gc.setSwagger2(true);
        mpg.setGlobalConfig(gc);

        // 数据源配置
        DataSourceConfig dsc = new DataSourceConfig();
        dsc.setUrl("jdbc:mysql://localhost:3306/archery?useSSL=false&characterEncoding=utf8&serverTimezone=GMT%2B8");
        dsc.setDriverName("com.mysql.cj.jdbc.Driver");
        dsc.setUsername("root");
        dsc.setPassword("123456");
        mpg.setDataSource(dsc);

        // 包配置
        PackageConfig pc = new PackageConfig();
//        pc.setModuleName(scanner("模块名"));
        pc.setModuleName("");
        pc.setParent(toPackage);
//        pc.setMapper("repo.mapper");
//        pc.setEntity("repo.entity");
//        pc.setService("service");
//        pc.setServiceImpl("service.impl");
        mpg.setPackageInfo(pc);

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

        // 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 + "/mybatis-plus-generate/code/resources/mapper/" + pc.getModuleName()
                        + "/" + tableInfo.getEntityName() + "Mapper" + StringPool.DOT_XML;
            }
        });
        cfg.setFileOutConfigList(focList);
        mpg.setCfg(cfg);

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

        // 策略配置
        StrategyConfig strategy = new StrategyConfig();
        strategy.setNaming(NamingStrategy.underline_to_camel);
        strategy.setColumnNaming(NamingStrategy.underline_to_camel);

        // 修改前缀
        strategy.setTablePrefix("");
//        strategy.setSuperEntityClass("com.baomidou.ant.common.BaseEntity");
        strategy.setEntityLombokModel(true);
        strategy.setRestControllerStyle(true);
        // 公共父类
//        strategy.setSuperControllerClass("com.baomidou.ant.common.BaseController");
        // 写于父类中的公共字段
//        strategy.setSuperEntityColumns("id");
        strategy.setInclude(include);
        strategy.setControllerMappingHyphenStyle(true);
//        strategy.setTablePrefix(pc.getModuleName() + "_");
        mpg.setStrategy(strategy);
        mpg.setTemplateEngine(new FreemarkerTemplateEngine());
        mpg.execute();
    }
    
    /**
     * 运行入口
     */
    @Test
    public void main() {
        String[] tables = new String[] {"t_admin_info"};
        CodeUtil.generate("com.lixiang.tron.repo", "lixiang", tables);
    }

}

依赖Jar包

<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus-boot-starter</artifactId>
    <version>3.1.0</version>
</dependency>

<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus-generator</artifactId>
    <version>3.3.0</version>
</dependency>

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

单元测试示例

单元测试

package com.lixiang.tron;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

@SpringBootTest(classes = App.class)
@RunWith(SpringJUnit4ClassRunner.class)
public class AppServiceImplTest {

    static {
        System.setProperty("APPID", "AppService");
        System.setProperty("env", "dev");
    }

    @Autowired
    private SmartIface smartIface;

    @Test
    public void testSmartIface(){
        smartIface.check();
        System.out.print("测试");
    }

}

多数据源

数据源配置

package com.lixiang.tron.config;

import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.SqlSessionTemplate;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.jdbc.DataSourceBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import javax.sql.DataSource;

@Configuration
@MapperScan(basePackages = "com.lixiang.tron.mapper.db0", sqlSessionTemplateRef  = "db0SqlSessionTemplate")
public class Db0Configuration {

    @Bean(name = "db0DataSource")
    @ConfigurationProperties(prefix = "spring.datasource.db0")
    public DataSource db0DataSource() {
        return DataSourceBuilder.create().build();
    }
    @Bean(name = "db0SqlSessionFactory")
    public SqlSessionFactory db0SqlSessionFactory(@Qualifier("db0DataSource") DataSource db0DataSource) throws Exception {
        SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
        //设置数据源
        sqlSessionFactoryBean.setDataSource(db0DataSource);
        org.apache.ibatis.session.Configuration config = new org.apache.ibatis.session.Configuration();
        config.setMapUnderscoreToCamelCase(true);
        sqlSessionFactoryBean.setConfiguration(config);
        sqlSessionFactoryBean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:mapper/db0/*.xml"));
        return sqlSessionFactoryBean.getObject();
    }
    @Bean(name = "db0SqlSessionTemplate")
    public SqlSessionTemplate db0SqlSessionTemplate(@Qualifier("db0SqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
        return new SqlSessionTemplate(sqlSessionFactory);
    }
}