Mybatis Plus自动生成代码
mybatis-plus自动生成代码
- 一、简易生成代码
- 二、指定生成的样式，并且不在一个模块
-
- 1.父pom文件配置
- 2.子模块pom文件配置
- 3.准备vm文件
- 4.设置MyBatisPlusGenerator.java
- 5.运行MyBatisPlusGenerator.java文件
- 6.运行sign-auth模块,解决异常
一、简易生成代码
/**
* 代码生成器
* @since 2022-03-21
*/
public class MpCode {
public static void main(String[] args) {
generate();
}
private static void generate(){
FastAutoGenerator.create("jdbc:mysql://127.0.0.1:3306/life-sign?serverTimezone=UTC", "root", "root")
.globalConfig(builder -> {
builder.author("lh") // 设置作者
/*.enableSwagger() */// 开启 swagger 模式
.fileOverride() // 覆盖已生成文件
.outputDir("E:\\IDEA_MY\\life-sign\\sign-common\\sign-code\\src\\main\\java"); // 指定输出目录 和自己项目src一一对应
})
.packageConfig(builder -> {
builder.parent("com.luck.sign") // 设置父包名
.moduleName(null) // 设置父包模块名 解决路径冲突
.serviceImpl("service.impl") //自定义包名imp 官方的是impi
.entity("entity") //设置实体包为pojo
.pathInfo(Collections.singletonMap(OutputFile.mapperXml, "E:\\IDEA_MY\\life-sign\\sign-common\\sign-code\\src\\main\\resources\\mapper")); // 设置mapperXml生成路径
})
.strategyConfig(builder -> {
builder.entityBuilder().enableLombok();//使用lombok
builder.controllerBuilder().enableHyphenStyle()
.enableRestStyle();//开启RestController
builder.addInclude("sign_tag"); // 设置需要生成的表名
})
// .templateEngine(new VelocityTemplateEngine()) // 使用Freemarker引擎模板，默认的是Velocity引擎模板
.execute();
}
}
二、指定生成的样式，并且不在一个模块
1.父pom文件配置
我是在父pom文件里进行的依赖管理
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0modelVersion>
<groupId>com.luckgroupId>
<artifactId>life-signartifactId>
<version>1.0-SNAPSHOTversion>
<modules>
<module>sign-authmodule>
<module>sign-commonmodule>
<module>sign-workmodule>
modules>
<packaging>pompackaging>
<properties>
<project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
<maven.compiler.source>1.8maven.compiler.source>
<maven.compiler.target>1.8maven.compiler.target>
properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>io.springfoxgroupId>
<artifactId>springfox-swagger-uiartifactId>
<version>2.9.2version>
dependency>
<dependency>
<groupId>io.springfoxgroupId>
<artifactId>springfox-swagger2artifactId>
<version>2.9.2version>
dependency>
<dependency>
<groupId>org.springframework.cloudgroupId>
<artifactId>spring-cloud-dependenciesartifactId>
<version>Hoxton.SR1version>
<type>pomtype>
<scope>importscope>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-dependenciesartifactId>
<version>2.2.2.RELEASEversion>
<type>pomtype>
<scope>importscope>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<version>8.0.27version>
dependency>
<dependency>
<groupId>org.mybatis.spring.bootgroupId>
<artifactId>mybatis-spring-boot-starterartifactId>
<version>2.1.4version>
dependency>
<dependency>
<groupId>com.baomidougroupId>
<artifactId>mybatis-plus-boot-starterartifactId>
<version>3.4.1version>
dependency>
<dependency>
<groupId>com.alibabagroupId>
<artifactId>druidartifactId>
<version>1.1.23version>
dependency>
<dependency>
<groupId>junitgroupId>
<artifactId>junitartifactId>
<version>4.13version>
<scope>testscope>
dependency>
<dependency>
<groupId>org.projectlombokgroupId>
<artifactId>lombokartifactId>
<version>1.18.22version>
dependency>
dependencies>
dependencyManagement>
project>
2.子模块pom文件配置
父模块管理了依赖，对于父模块里面有的，子模块导入，就不需要写版本号了
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>sign-commonartifactId>
<groupId>com.luckgroupId>
<version>1.0-SNAPSHOTversion>
parent>
<modelVersion>4.0.0modelVersion>
<packaging>jarpackaging>
<artifactId>sign-codeartifactId>
<dependencies>
<dependency>
<groupId>io.springfoxgroupId>
<artifactId>springfox-swagger-uiartifactId>
dependency>
<dependency>
<groupId>io.springfoxgroupId>
<artifactId>springfox-swagger2artifactId>
dependency>
<dependency>
<groupId>org.apache.velocitygroupId>
<artifactId>velocityartifactId>
<version>1.7version>
dependency>
<dependency>
<groupId>com.baomidougroupId>
<artifactId>mybatis-plus-generatorartifactId>
<version>3.4.1version>
dependency>
<dependency>
<groupId>com.baomidougroupId>
<artifactId>mybatis-plus-boot-starterartifactId>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-webartifactId>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
dependency>
<dependency>
<groupId>org.projectlombokgroupId>
<artifactId>lombokartifactId>
dependency>
dependencies>
project>
以上模块的导入，针对mybatis-plus自动生成代码的功能，主要如下几个依赖
<dependency>
<groupId>org.apache.velocitygroupId>
<artifactId>velocityartifactId>
<version>1.7version>
dependency>
<dependency>
<groupId>com.baomidougroupId>
<artifactId>mybatis-plus-generatorartifactId>
<version>3.4.1version>
dependency>
<dependency>
<groupId>com.baomidougroupId>
<artifactId>mybatis-plus-boot-starterartifactId>
dependency>
3.准备vm文件
资源链接如下，若下载不了，可留言
mybatis-plus自动生成代码的自定义引擎文件（vm文件）
4.设置MyBatisPlusGenerator.java
用心看，铁子们应该看的懂
package com.luck.sign.util;
import com.baomidou.mybatisplus.core.exceptions.MybatisPlusException;
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.DateType;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
import com.baomidou.mybatisplus.generator.engine.VelocityTemplateEngine;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang.WordUtils;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
/**
* mybatis plus 代码自动生成器
* 参考： https://blog.csdn.net/ChunwaiLeung/article/details/121629340
*/
public class MyBatisPlusGenerator {
private static String module;
private static String PACKAGE = "com.luck.sign";
private static String AUTHOR = "lh";
private static String DATA_USER_NAME = "root";
private static String DATA_PASSWORD = "root";
private static String DATA_DRIVER_NAME = "com.mysql.cj.jdbc.Driver";
private static String DATA_URL = "jdbc:mysql://127.0.0.1:3306/life-sign?characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&useSSL=false&allowMultiQueries=true&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=Asia/Shanghai";
private static String PATH_MAPPER = "/src/main/java/com/luck/sign/";
private static String PATH_MAPPER_XML = "/src/main/resources/mapper/";
private static String PATH_CONTROLLER = "/src/main/java/com/luck/sign/";
private static String PATH_SERVICE = "/src/main/java/com/luck/sign/";
private static String PATH_SERVICE_IMP = "/src/main/java/com/luck/sign/";
private static String PATH_ENTITY = "/sign-common/sign-code/src/main/java/com/luck/sign/";
public static void main(String[] args) {
module = "/" + scanner("要输入到哪个项目？");
String[] tables = scanner("请输入要生成的表名多个用 , 分割").split(",");
for (String table : tables) {
shell(table);
}
}
public static String scanner(String someThing) {
Scanner scanner = new Scanner(System.in);
StringBuilder help = new StringBuilder();
help.append("请输入" + someThing + "：");
System.out.println(help.toString());
if (scanner.hasNext()) {
String sc = scanner.next();
if ("" != sc && null != sc) {
return sc;
}
}
throw new MybatisPlusException("请输入正确的" + someThing + "！");
}
private static void shell(String table) {
// 代码生成器
AutoGenerator mpg = new AutoGenerator();
// 数据源配置
DataSourceConfig dsc = new DataSourceConfig();
dsc.setDriverName(DATA_DRIVER_NAME);
dsc.setUsername(DATA_USER_NAME);
dsc.setPassword(DATA_PASSWORD);
dsc.setUrl(DATA_URL);
mpg.setDataSource(dsc);
// 全局配置
final String projectPath = System.getProperty("user.dir"); // 默认定位到的当前用户目录("user.dir")（即工程根目录） https://blog.csdn.net/qq_29964641/article/details/86686585
GlobalConfig gc = new GlobalConfig();
gc.setAuthor(AUTHOR);//作者名称
gc.setDateType(DateType.ONLY_DATE);
gc.setOpen(false); //生成后是否打开资源管理器
gc.setServiceName("%sService"); //自定义文件命名，注意 %s 会自动填充表实体属性！ %s作为占位符
gc.setServiceImplName("%sServiceImpl");
gc.setMapperName("%sMapper");
gc.setXmlName("%sMapper");
gc.setSwagger2(true);// 是否开启Swagger2模式
gc.setFileOverride(true); //重新生成时文件是否覆盖
gc.setActiveRecord(false);// 不需要ActiveRecord特性的请改为false
gc.setEnableCache(false);// XML 二级缓存
gc.setBaseResultMap(true);// XML ResultMap
gc.setBaseColumnList(false);// XML columList
// gc.setIdType(IdType.ID_WORKER_STR); //主键策略
// gc.setOutputDir(projectPath + "/src/main/java");
// gc.setControllerName("%sController");
mpg.setGlobalConfig(gc);
// 包配置
PackageConfig pc = new PackageConfig();
pc.setParent(PACKAGE);
pc.setMapper("mapper");//dao
pc.setService("service");//servcie
pc.setController("controller");//controller
pc.setEntity("entity");
// pc.setModuleName("model名"); 自定义包名
// 自定义配置
InjectionConfig cfg = new InjectionConfig() {
@Override
public void initMap() {
// //表信息
String name = this.getConfig().getStrategyConfig().getColumnNaming().name();
}
};
// 模板引擎是 freemarker
// 自定义controller的代码模板
// 如果模板引擎是 velocity
String templatePath = "/template/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,配置mapper.xml
focList.add(new FileOutConfig(templatePath) {
@Override
public String outputFile(TableInfo tableInfo) {
//根据自己的位置修改
return projectPath + module + PATH_MAPPER_XML + tableInfo.getEntityName() + "Mapper" + StringPool.DOT_XML;
}
});
//控制层
templatePath = "/template/Controller.java.vm";
// 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 + pc.getModuleName()
String expand = projectPath + module + PATH_CONTROLLER + "controller";
String entityFile = String.format((expand + File.separator + "%s" + ".java"), tableInfo.getControllerName());
return entityFile;
}
});
//业务层
templatePath = "/template/Service.java.vm";
// 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 + pc.getModuleName()
String expand = projectPath + module + PATH_SERVICE + "service";
String entityFile = String.format((expand + File.separator + "%s" + ".java"), tableInfo.getServiceName());
return entityFile;
}
});
templatePath = "/template/ServiceImpl.java.vm";
// 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 + pc.getModuleName()
String expand = projectPath + module + PATH_SERVICE_IMP + "service/impl";
String entityFile = String.format((expand + File.separator + "%s" + ".java"), tableInfo.getServiceImplName());
return entityFile;
}
});
//数据层
templatePath = "/template/Mapper.java.vm";
// 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 + pc.getModuleName()
String expand = projectPath + module +PATH_MAPPER + "mapper";
String entityFile = String.format((expand + File.separator + "%s" + ".java"), tableInfo.getMapperName());
return entityFile;
}
});
//数据层
templatePath = "/template/Entity.java.vm";
// 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 + pc.getModuleName()
String expand = projectPath + PATH_ENTITY + "entity";
String entityFile = String.format((expand + File.separator + "%s" + ".java"), tableInfo.getEntityName());
return entityFile;
}
});
mpg.setPackageInfo(pc);
cfg.setFileOutConfigList(focList);
mpg.setCfg(cfg);
// 配置模板
TemplateConfig templateConfig = new TemplateConfig();
// 配置自定义输出模板
//指定自定义模板路径，注意不要带上.ftl/.vm, 会根据使用的模板引擎自动识别
templateConfig.setService("/template/Service.java.vm");
templateConfig.setServiceImpl("/template/ServiceImpl.java.vm");
templateConfig.setEntity("/template/Entity.java.vm");
templateConfig.setMapper("/template/Mapper.java.vm");
templateConfig.setController("/template/Controller.java.vm");
// //此处设置为null，就不会再java下创建xml的文件夹了
templateConfig.setXml("/template/Mapper.xml.vm");
mpg.setTemplate(templateConfig);
// 策略配置
StrategyConfig strategy = new StrategyConfig();
strategy.setNaming(NamingStrategy.underline_to_camel); // 数据库表映射到实体的命名策略
strategy.setColumnNaming(NamingStrategy.underline_to_camel); //数据库表字段映射到实体的命名策略
strategy.setEntityLombokModel(true);
strategy.setRestControllerStyle(true);
strategy.setInclude(table); //table 表名对那一张表生成代码
strategy.setControllerMappingHyphenStyle(true);
strategy.setEntityLombokModel(true); // lombok 模型 @Accessors(chain = true) setter链式操作
// strategy.setSuperEntityClass("com.baomidou.ant.common.BaseEntity");
// strategy.setSuperControllerClass("com.baomidou.ant.common.BaseController"); // 公共父类
// strategy.setSuperEntityColumns("id"); // 写于父类中的公共字段
// strategy.setTablePrefix("t_"); //生成实体时去掉表前缀
// strategy.setRestControllerStyle(true); //restful api风格控制器
// strategy.setControllerMappingHyphenStyle(true); //url中驼峰转连字符
mpg.setStrategy(strategy);
mpg.setTemplateEngine(new VelocityTemplateEngine());//默认模板引擎
mpg.execute();
}
/**
* 表名转换成Java类名
*/
private String tableToJava(String tableName, String tablePrefix) {
if (StringUtils.isNotBlank(tablePrefix)) {
tableName = tableName.replaceFirst(tablePrefix, "");
}
return columnToJava(tableName);
}
/**
* 列名转换成Java属性名
*/
public String columnToJava(String columnName) {
return WordUtils.capitalizeFully(columnName, new char[]{'_'}).replace("_", "");
}
}
5.运行MyBatisPlusGenerator.java文件
6.运行sign-auth模块,解决异常
问题：
因为在MyBatisPlusGenerator.java 的全局参数配置重开启了swagger,但是模块并没有引入相关依赖
解决：
1.因为其他模块都会引入sign-code模块，所以在sign-code模块里引入
2.配置swagger.config,否则swagger不能正常访问
<dependency>
<groupId>io.springfoxgroupId>
<artifactId>springfox-swagger-uiartifactId>
dependency>
<dependency>
<groupId>io.springfoxgroupId>
<artifactId>springfox-swagger2artifactId>
dependency>
报错：
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'signOpenidController' defined in file [E:\IDEA_MY\life-sign\sign-auth\target\classes\com\luck\sign\controller\SignOpenidController.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'signOpenidServiceImpl': Unsatisfied dependency expressed through field 'baseMapper'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.luck.sign.mapper.SignOpenidMapper' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:798) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE]
... ...
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'signOpenidServiceImpl': Unsatisfied dependency expressed through field 'baseMapper'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.luck.sign.mapper.SignOpenidMapper' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE]
... ...
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.luck.sign.mapper.SignOpenidMapper' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1695) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE]
... ...
解决方式：
在启动类加注释 @MapperScan("com.luck.sign.mapper")，再运行即可
@MapperScan("com.luck.sign.mapper")
@SpringBootApplication
public class AuthApplication {
public static void main(String[] args){
SpringApplication.run(AuthApplication.class,args);
}
}