Mybatis-Plus自动生成项目

你的名字 2023-09-29 19:17 15阅读 0赞

## MybatisPlus自动生成项目 ##

1.在springBoot中自动生成实体类、controller层、swagger电子接口文档、service层、dao层。都可以实现  
2.生成的工具类代码

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;
    
    /**
     * @ClassName CodeGenerator
     * @Description TODO
     * @Author 11363
     * @DATE 2021/5/14 17:26
     * @Version 1.0
     */
    public class CodeGenerator {
        
        /**
         * <p>
         * 读取控制台内容
         * </p>
         */
        public static String scanner(String tip) {
        
            Scanner scanner = new Scanner(System.in);
            StringBuilder help = new StringBuilder();
            System.out.println("中文乱码？");
            help.append("请输入" + tip + "：");
            System.out.println(help.toString());
            if (scanner.hasNext()) {
        
                String ipt = scanner.next();
                if (StringUtils.isNotEmpty(ipt)) {
        
                    return ipt;
                }
            }
            throw new MybatisPlusException("请输入正确的" + tip + "！");
        }
    
        public static void main(String[] args) {
        
            // 代码生成器
            AutoGenerator mpg = new AutoGenerator();
    
            // 全局配置
            GlobalConfig gc = new GlobalConfig();
    //        String projectPath = System.getProperty("user.dir")+"\\mybatis-plus";
            String  projectPath = System.getProperty("user.dir");
            gc.setOutputDir(projectPath + "/src/main/java");
            gc.setAuthor("jobob");
            gc.setOpen(false);
            gc.setSwagger2(true); //实体属性 Swagger2 注解
            mpg.setGlobalConfig(gc);
    
            // 数据源配置
            DataSourceConfig dsc = new DataSourceConfig();
            dsc.setUrl("jdbc:mysql:///db2?serverTimezone=GMT%2B8&characterEncoding=utf-8&&allowMultiQueries=true");
            // dsc.setSchemaName("public");
            dsc.setDriverName("com.mysql.cj.jdbc.Driver");
            dsc.setUsername("root");
            dsc.setPassword("xyh123");
            mpg.setDataSource(dsc);
    
            // 包配置
            PackageConfig pc = new PackageConfig();
            pc.setModuleName(scanner("模块名"));
            pc.setParent("com.jz");
            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/mybatis.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 + "/src/main/resources/mybatis/" + pc.getModuleName()
                            + "/" + tableInfo.getEntityName() + "Mapper" + StringPool.DOT_XML;
                }
            });
            /*
            cfg.setFileCreate(new IFileCreate() {
                @Override
                public boolean isCreate(ConfigBuilder configBuilder, FileType fileType, String filePath) {
                    // 判断自定义文件夹是否需要创建
                    checkDir("调用默认方法创建的目录，自定义目录用");
                    if (fileType == FileType.MAPPER) {
                        // 已经生成 mybatis 文件判断存在，不想重新生成返回 false
                        return !new File(filePath).exists();
                    }
                    // 允许生成模板文件
                    return true;
                }
            });
            */
            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.setEntity("templates/entity2.java");
            // templateConfig.setService();
            // templateConfig.setController();
    
            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);
            //strategy.setSuperEntityClass("你自己的父类实体,没有就不用设置!");
            strategy.setEntityLombokModel(true);
            strategy.setRestControllerStyle(true);
            // 公共父类
            //strategy.setSuperControllerClass("你自己的父类控制器,没有就不用设置!");
            // 写于父类中的公共字段
            strategy.setSuperEntityColumns("id");
            strategy.setInclude(scanner("表名，多个英文逗号分割").split(","));
            //strategy.setInclude("gongyingshang");
            strategy.setControllerMappingHyphenStyle(true);
            strategy.setTablePrefix(pc.getModuleName() + "_");
            mpg.setStrategy(strategy);
            mpg.setTemplateEngine(new FreemarkerTemplateEngine());
            mpg.execute();
        }
    }

2.在pom中导入相关坐标

<?xml version="1.0" encoding="UTF-8"?>
    <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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    	<modelVersion>4.0.0</modelVersion>
    
    	<groupId>com.jz</groupId>
    	<artifactId>caigou</artifactId>
    	<version>0.0.1-SNAPSHOT</version>
    	<name>caigou</name>
    	<description>Demo project for Spring Boot</description>
    	<properties>
    		<java.version>1.8</java.version>
    		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    		<spring-boot.version>2.1.7.RELEASE</spring-boot.version>
    	</properties>
    	<dependencies>
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-validation</artifactId>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-web</artifactId>
    		</dependency>
    		
    
    		<dependency>
    			<groupId>com.baomidou</groupId>
    			<artifactId>mybatis-plus-boot-starter</artifactId>
    			<version>3.0.5</version>
    		</dependency>
    		
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-freemarker</artifactId>
    		</dependency>
    
    		
    		<dependency>
    			<groupId>org.apache.poi</groupId>
    			<artifactId>poi</artifactId>
    			<version>3.17</version>
    		</dependency>
    
    		<dependency>
    			<groupId>org.apache.poi</groupId>
    			<artifactId>poi-ooxml</artifactId>
    			<version>3.16-beta2</version>
    		</dependency>
    		
    		<dependency>
    			<groupId>org.projectlombok</groupId>
    			<artifactId>lombok</artifactId>
    			<version>1.16.10</version>
    			<scope>provided</scope>
    		</dependency>
    
    		<dependency>
    			<groupId>mysql</groupId>
    			<artifactId>mysql-connector-java</artifactId>
    			<scope>runtime</scope>
    		</dependency>
    
    		<dependency>
    			<groupId>org.projectlombok</groupId>
    			<artifactId>lombok</artifactId>
    			<optional>true</optional>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-test</artifactId>
    			<scope>test</scope>
    		</dependency>
    		
    		<dependency>
    			<groupId>io.springfox</groupId>
    			<artifactId>springfox-swagger2</artifactId>
    			<version>2.6.1</version>
    		</dependency>
    
    		<dependency>
    			<groupId>io.springfox</groupId>
    			<artifactId>springfox-swagger-ui</artifactId>
    			<version>2.6.1</version>
    		</dependency>
    
    	</dependencies>
    
    	<dependencyManagement>
    		<dependencies>
    			<dependency>
    				<groupId>org.springframework.boot</groupId>
    				<artifactId>spring-boot-dependencies</artifactId>
    				<version>${spring-boot.version}</version>
    				<type>pom</type>
    				<scope>import</scope>
    			</dependency>
    		</dependencies>
    	</dependencyManagement>
    
    	<build>
    		<plugins>
    			<plugin>
    				<groupId>org.apache.maven.plugins</groupId>
    				<artifactId>maven-compiler-plugin</artifactId>
    				<version>3.8.1</version>
    				<configuration>
    					<source>1.8</source>
    					<target>1.8</target>
    					<encoding>UTF-8</encoding>
    				</configuration>
    			</plugin>
    			<plugin>
    				<groupId>org.springframework.boot</groupId>
    				<artifactId>spring-boot-maven-plugin</artifactId>
    				<version>2.3.7.RELEASE</version>
    				<configuration>
    					<mainClass>com.example.demo.MybatisPlusApplication</mainClass>
    				</configuration>
    				<executions>
    					<execution>
    						<id>repackage</id>
    						<goals>
    							<goal>repackage</goal>
    						</goals>
    					</execution>
    				</executions>
    			</plugin>
    		</plugins>
    	</build>
    
    </project>

3.因为自带的这种生成还有点小问题，在mapp层，需要手动加@Mapper注解。