天天看點
傳回

MyBatis Plus中代碼生成器使用

按照官網上執行個體嘗試了一下，感覺MyBatis plus中代碼生成器還是很強大的，以下是測試的總結：

使用MybatisPlus的主要依賴

  • 引入plus依賴（苞米豆） 
<dependency>
  		<groupId>com.baomidou</groupId>
  		<artifactId>mybatis-plus-boot-starter</artifactId>
  		<version>3.1.1</version>
  	</dependency>
  • 生成器依賴 
<dependency>
			<groupId>com.baomidou</groupId>
			<artifactId>mybatis-plus-generator</artifactId>
			<version>3.1.1</version>
		</dependency>
  • 模闆依賴 
<dependency>
			<groupId>org.freemarker</groupId>
			<artifactId>freemarker</artifactId>
			<version>2.3.28</version>
		</dependency>

測試的pom依賴（也有我測試别東西的依賴，多餘的請忽略） 

<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.1.5.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.wy</groupId>
	<artifactId>testpuls</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>testpuls</name>
	<description>Demo project for Spring Boot</description>

	<properties>
		<java.version>1.8</java.version>
	</properties>

	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</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>com.baomidou</groupId>
			<artifactId>mybatis-plus-boot-starter</artifactId>
			<version>3.1.1</version>
		</dependency>
		<dependency>
			<groupId>com.baomidou</groupId>
			<artifactId>mybatis-plus-generator</artifactId>
			<version>3.1.1</version>
		</dependency>
		<dependency>
			<groupId>org.freemarker</groupId>
			<artifactId>freemarker</artifactId>
			<version>2.3.28</version>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.12</version>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-test</artifactId>
			<version>5.1.7.RELEASE</version>
			<scope>compile</scope>
		</dependency>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-test</artifactId>
		</dependency>
		<dependency>
			<groupId>com.capgemini.mrchecker</groupId>
			<artifactId>mrchecker-core-module</artifactId>
			<version>4.12.1.1</version>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-spring-service-connector</artifactId>
			<version>2.0.4.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>com.capgemini.mrchecker</groupId>
			<artifactId>mrchecker-core-module</artifactId>
			<version>4.12.1.1</version>
		</dependency>
	</dependencies>

	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>

</project>
  • 代碼生成器類 
package com.wy.testpuls.util;

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;

public class MyGenerator {
    public static String scanner(String someThing) {
        Scanner scanner = new Scanner(System.in);
        StringBuilder help = new StringBuilder();
        help.append("請輸入" + someThing + "：");
        System.out.println(help.toString());
        if (scanner.hasNext()) {
            String sc = scanner.next();
            if (StringUtils.isNotEmpty(sc)) {
                return sc;
            }
        }
        throw new MybatisPlusException("請輸入正确的" + someThing + "！");
    }

    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.setAuthor("山石");
        gc.setOpen(false);
        mpg.setGlobalConfig(gc);

        // 資料源配置
        DataSourceConfig dsc = new DataSourceConfig();
        dsc.setUrl("jdbc:mysql://localhost:3306/test?useUnicode=true&useSSL=false&characterEncoding=utf8");
        dsc.setDriverName("com.mysql.jdbc.Driver");
        dsc.setUsername("root");
        dsc.setPassword("admin");
        mpg.setDataSource(dsc);

        // 包配置
        PackageConfig pc = new PackageConfig();
        pc.setModuleName(scanner("請輸入你的包名"));
        pc.setParent("com.wy");//你哪個父目錄下建立包
        mpg.setPackageInfo(pc);

        // 自定義配置
        InjectionConfig cfg = new InjectionConfig() {
            @Override
            public void initMap() {
                // to do nothing
            }
        };

        // 如果模闆引擎是 freemarker
        String templatePath = "/templates/mapper.xml.ftl";
        // 如果模闆引擎是 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) {
                // 自定義輸出檔案名 ， 如果你 Entity 設定了前字尾、此處注意 xml 的名稱會跟着發生變化！！
                return projectPath + "/src/main/resources/mapper/" + pc.getModuleName()
                        + "/" + tableInfo.getEntityName() + "Mapper" + StringPool.DOT_XML;
            }
        });
        cfg.setFileOutConfigList(focList);
        mpg.setCfg(cfg);

        // 配置模闆
        TemplateConfig templateConfig = new TemplateConfig();

        // 配置自定義輸出模闆
        //指定自定義模闆路徑，注意不要帶上.ftl/.vm, 會根據使用的模闆引擎自動識别
        // templateConfig.setEntity("templates/entity2.java");
        // templateConfig.setService();
        // templateConfig.setController();

        templateConfig.setXml(null);
        mpg.setTemplate(templateConfig);

        // 政策配置,資料庫表配置
        StrategyConfig strategy = new StrategyConfig();
        //資料庫表映射到實體的命名政策
        strategy.setNaming(NamingStrategy.underline_to_camel);
        //資料庫表字段映射到實體類的命名政策
        strategy.setColumnNaming(NamingStrategy.underline_to_camel);
        //自定義繼承entity類，添加這一個會在生成實體類的時候繼承entity
        //strategy.setSuperEntityClass("com.wy.testCodeGenerator.entity");
        //實體是否為lombok模型
        strategy.setEntityLombokModel(true);
        //生成@RestController控制器
        strategy.setRestControllerStyle(true);
        //是否繼承controller
       // strategy.setSuperControllerClass("com.wy.testCodeGenerator.controller");
        strategy.setInclude(scanner("表名，多個英文逗号分割").split(","));
        strategy.setSuperEntityColumns("id");
        //駝峰轉連字元串
        strategy.setControllerMappingHyphenStyle(true);
        //表字首
        strategy.setTablePrefix(pc.getModuleName() + "_");
        mpg.setStrategy(strategy);
        mpg.setTemplateEngine(new FreemarkerTemplateEngine());
        mpg.execute();
    }
}
注意：測試時輸入的表名必須和資料庫中一緻，區分大小寫。
疑問：生成的實體類當中沒有id。求解
MyBatis plus plus代碼生成器
上一篇: 項目評價
下一篇: 軟體工程第一次作業 - l1500802078

繼續閱讀