MyBatisPlus（四、代码生成器）

<dependency><groupId>org.apache.velocity</groupId><artifactId>velocity-engine-core</artifactId><version>最新版本</version></dependency>

<dependency><groupId>org.freemarker</groupId><artifactId>freemarker</artifactId><version>最新版本</version></dependency>

<dependency><groupId>com.ibeetl</groupId><artifactId>beetl</artifactId><version>最新版本</version></dependency>

<dependency><groupId>com.baomidou</groupId><artifactId>mybatis-plus-generator</artifactId><version>3.3.1.tmp</version></dependency><dependency><groupId>org.apache.velocity</groupId><artifactId>velocity</artifactId><version>1.7</version></dependency>

GlobalConfigglobalConfig=newGlobalConfig();
globalConfig.setOutputDir(System.getProperty("user.dir") +"/src/main/java");
globalConfig.setAuthor("jobob");
globalConfig.setOpen(false);

DataSourceConfigdataSourceConfig=newDataSourceConfig();
dataSourceConfig.setUrl("jdbc:mysql://localhost:3306/ant?useUnicode=true&useSSL=false&characterEncoding=utf8");
dataSourceConfig.setDriverName("com.mysql.jdbc.Driver");
dataSourceConfig.setUsername("root");
dataSourceConfig.setPassword("password");

packagecom.example.mybatisplus;
importcom.baomidou.mybatisplus.annotation.DbType;
importcom.baomidou.mybatisplus.generator.AutoGenerator;
importcom.baomidou.mybatisplus.generator.config.DataSourceConfig;
importcom.baomidou.mybatisplus.generator.config.GlobalConfig;
importcom.baomidou.mybatisplus.generator.config.PackageConfig;
importcom.baomidou.mybatisplus.generator.config.StrategyConfig;
importcom.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
publicclassMain {
publicstaticvoidmain(String[] args) {
//1、创建generator对象AutoGeneratorautoGenerator=newAutoGenerator();
//数据源DataSourceConfigdataSourceConfig=newDataSourceConfig();
dataSourceConfig.setDbType(DbType.MYSQL);
dataSourceConfig.setUrl("jdbc:mysql://127.0.0.1:3306/test?useUnicode=ture&characterEncoding=UTF-8&serverTimezone=GMT%2B8");
dataSourceConfig.setUsername("root");
dataSourceConfig.setPassword("root");
dataSourceConfig.setDriverName("com.mysql.cj.jdbc.Driver");
autoGenerator.setDataSource(dataSourceConfig);      //设置数据源//2、全局配置GlobalConfigglobalConfig=newGlobalConfig();
globalConfig.setOutputDir(System.getProperty("user.dir")+"/src/main/java");
globalConfig.setOpen(false);        //是否打开输出目录globalConfig.setAuthor("xmp");      //作者globalConfig.setServiceName("%sService");           //设置生成的service接口的名字不带IautoGenerator.setGlobalConfig(globalConfig);        //设置全局配置//3、包信息PackageConfigpackageConfig=newPackageConfig();  //包配置packageConfig.setParent("com.example.mybatisplus");     //设置父包名packageConfig.setModuleName("generator");       //  设置子包名packageConfig.setController("controller");      //设置控制器包名packageConfig.setService("service");
packageConfig.setServiceImpl("service.impl");
packageConfig.setMapper("mapper");
packageConfig.setEntity("entity");
autoGenerator.setPackageInfo(packageConfig);        //设置包配置//4、配置策略StrategyConfigstrategyConfig=newStrategyConfig();       //策略配置strategyConfig.setEntityLombokModel(true);      //是否使用lombokstrategyConfig.setNaming(NamingStrategy.underline_to_camel);        //数据库表映射到实体的命名策略strategyConfig.setColumnNaming(NamingStrategy.underline_to_camel);  //数据库表字段映射到实体的命名策略autoGenerator.setStrategy(strategyConfig);      //设置策略配置autoGenerator.execute();        //执行生成    }
}

<dependency><groupId>com.baomidou</groupId><artifactId>mybatis-plus-generator</artifactId><version>最新版本</version></dependency>

FastAutoGenerator.create("url", "username", "password")
    .globalConfig(builder-> {
builder.author("baomidou") // 设置作者            .enableSwagger() // 开启 swagger 模式            .fileOverride() // 覆盖已生成文件            .outputDir("D://"); // 指定输出目录    })
    .packageConfig(builder-> {
builder.parent("com.baomidou.mybatisplus.samples.generator") // 设置父包名            .moduleName("system") // 设置父包模块名            .pathInfo(Collections.singletonMap(OutputFile.xml, "D://")); // 设置mapperXml生成路径    })
    .strategyConfig(builder-> {
builder.addInclude("t_simple") // 设置需要生成的表名            .addTablePrefix("t_", "c_"); // 设置过滤表前缀    })
    .templateEngine(newFreemarkerTemplateEngine()) // 使用Freemarker引擎模板，默认的是Velocity引擎模板    .execute();

FastAutoGenerator.create(DATA_SOURCE_CONFIG)
// 全局配置    .globalConfig((scanner, builder) ->builder.author(scanner.apply("请输入作者名称？")).fileOverride())
// 包配置    .packageConfig((scanner, builder) ->builder.parent(scanner.apply("请输入包名？")))
// 策略配置    .strategyConfig((scanner, builder) ->builder.addInclude(getTables(scanner.apply("请输入表名，多个英文逗号分隔？所有输入 all")))
                        .controllerBuilder().enableRestStyle().enableHyphenStyle()
                        .entityBuilder().enableLombok().addTableFills(
newColumn("create_time", FieldFill.INSERT)
                        ).build())
/*模板引擎配置，默认 Velocity 可选模板引擎 Beetl 或 Freemarker.templateEngine(new BeetlTemplateEngine()).templateEngine(new FreemarkerTemplateEngine())*/    .execute();
// 处理 all 情况protectedstaticList<String>getTables(Stringtables) {
return"all".equals(tables) ?Collections.emptyList() : Arrays.asList(tables.split(","));
}

newDataSourceConfig.Builder("jdbc:mysql://127.0.0.1:3306/mybatis-plus","root","123456")
    .build();

newDataSourceConfig.Builder("jdbc:mysql://127.0.0.1:3306/mybatis-plus","root","123456")
    .dbQuery(newMySqlQuery())
    .schema("mybatis-plus")
    .typeConvert(newMySqlTypeConvert())
    .keyWordsHandler(newMySqlKeyWordsHandler())
    .build();

newGlobalConfig.Builder()
    .fileOverride()
    .outputDir("/opt/baomidou")
    .author("baomidou")
    .enableKotlin()
    .enableSwagger()
    .dateType(DateType.TIME_PACK)
    .commentDate("yyyy-MM-dd")
    .build();

newPackageConfig.Builder()
    .parent("com.baomidou.mybatisplus.samples.generator")
    .moduleName("sys")
    .entity("po")
    .service("service")
    .serviceImpl("service.impl")
    .mapper("mapper")
    .xml("mapper.xml")
    .controller("controller")
    .other("other")
    .pathInfo(Collections.singletonMap(OutputFile.mapperXml, "D://"))
    .build();

newTemplateConfig.Builder()
    .disable(TemplateType.ENTITY)
    .entity("/templates/entity.java")
    .service("/templates/service.java")
    .serviceImpl("/templates/serviceImpl.java")
    .mapper("/templates/mapper.java")
    .mapperXml("/templates/mapper.xml")
    .controller("/templates/controller.java")
    .build();

newInjectionConfig.Builder()
    .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();