SpringBoot整合MyBatis-Plus實現快速業務功能開發

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概覽：使用MybatisPlus和它的代碼生成整合SpringBoot能夠實現快速的業務功能開發，具體步驟以下

1、添加依賴

<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <optional>true</optional>
</dependency>

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

<!-- Mybait-Plus代碼生成 begin -->
<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus-generator</artifactId>
    <version>3.1.0</version>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-freemarker</artifactId>
</dependency>
<!-- Mybait-Plus代碼生成 end -->

 

2、配置Mybaits-Plus

## MyBatis-Plus(若是用MyBatis只需去掉plus後綴)
mybatis-plus.mapper-locations=classpath:mapper/*.xml
mybatis-plus.type-aliases-package=cn.bounter.mybatisplus.entity
mybatis-plus.configuration.map-underscore-to-camel-case=true
mybatis-plus.configuration.use-column-label=true

 

3、配置代碼生成器 MysqlGenerator

package cn.bounter.mybatisplus;

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;

/**
 * <p>
 * mysql 代碼生成器演示例子
 * </p>
 *
 */
public class MysqlGenerator {

    /**
     * <p>
     * 讀取控制檯內容
     * </p>
     */
    public static String scanner(String tip) {
        Scanner scanner = new Scanner(System.in);
        StringBuilder help = new StringBuilder();
        help.append("請輸入" + tip + "：");
        System.out.println(help.toString());
        if (scanner.hasNext()) {
            String ipt = scanner.next();
            if (StringUtils.isNotEmpty(ipt)) {
                return ipt;
            }
        }
        throw new MybatisPlusException("請輸入正確的" + tip + "！");
    }

    /**
     * RUN THIS
     */
    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");
//        String modelName = "";
        gc.setOutputDir(projectPath + "/src/main/java");
        gc.setAuthor("simon");
        gc.setOpen(false);
        gc.setFileOverride(true);// 是否覆蓋同名文件，默認是false
        gc.setActiveRecord(true);// 不須要ActiveRecord特性的請改成false
        gc.setEnableCache(false);// XML 二級緩存
        gc.setBaseResultMap(false);// XML ResultMap
        gc.setBaseColumnList(false);// XML columList
        mpg.setGlobalConfig(gc);

        // 數據源配置
        DataSourceConfig dsc = new DataSourceConfig();
        dsc.setUrl("jdbc:mysql://47.98.151.249:3306/bounter?useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true&serverTimezone=PRC&useSSL=false");
        // dsc.setSchemaName("public");
        dsc.setDriverName("com.mysql.jdbc.Driver");
        dsc.setUsername("bounter");
        dsc.setPassword("111111@Bounter");

        mpg.setDataSource(dsc);

        // 包配置
        PackageConfig pc = new PackageConfig();
//        pc.setModuleName(scanner("模塊名"));
        pc.setParent("cn.bounter.mybatisplus");
        pc.setController("controller");
        pc.setEntity("entity");
        pc.setMapper("dao");
        pc.setService("service");
        pc.setServiceImpl("service.impl" );
        mpg.setPackageInfo(pc);

        // 自定義配置
        InjectionConfig cfg = new InjectionConfig() {
            @Override
            public void initMap() {
                // to do nothing
            }
        };
        // 若是模板引擎是 freemarker
        String templatePath = "/templates/mapper.xml.ftl";
        // 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) {
                // 自定義輸出文件名 ， 若是你 Entity 設置了先後綴、此處注意 xml 的名稱會跟着發生變化！！
                return projectPath + "/src/main/resources/mapper/" + 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);
        strategy.setEntityLombokModel(true);
        strategy.setInclude(scanner("表名，多個英文逗號分割").split(","));
//        strategy.setTablePrefix("t_");
        strategy.setRestControllerStyle(true);
        mpg.setStrategy(strategy);
        // 選擇 freemarker 引擎須要指定以下加，注意 pom 依賴必須有！
        mpg.setTemplateEngine(new FreemarkerTemplateEngine());
        mpg.execute();
    }

}

 

4、生成代碼，實現相應的Controller

package cn.bounter.mybatisplus.controller;

import cn.bounter.mybatisplus.common.PageReq;
import cn.bounter.mybatisplus.entity.Bounter;
import cn.bounter.mybatisplus.service.IBounterService;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.api.R;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

/**
 * <p>
 *  前端控制器
 * </p>
 *
 * @author simon
 * @since 2019-05-09
 */
@RestController
@RequestMapping("/api/bounter")
public class BounterController {

    @Autowired
    private IBounterService bounterService;

    /**
     * 列表&搜索
     * @param pageReq
     * @return
     */
    @PostMapping("/list")
    public R<?> list(@RequestBody PageReq<Bounter> pageReq) {
        Bounter bounter = pageReq.getReqObj() == null ? new Bounter() : pageReq.getReqObj();
        return R.ok(bounterService.page(new Page<>(pageReq.getPageNum(), pageReq.getPageSize()),
                Wrappers.<Bounter>lambdaQuery().eq(Bounter::getId, bounter.getId())));
    }

    /**
     * 詳情
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<?> detail(@PathVariable Long id) {
        return R.ok(bounterService.getById(id));
    }

    /**
     * 新增
     * @param bounter
     * @return
     */
    @PostMapping
    public R<?> save(@RequestBody Bounter bounter) {
        return R.ok(bounterService.save(bounter));
    }

    /**
     * 修改
     * @param bounter
     * @return
     */
    @PutMapping
    public R<?> update(@RequestBody Bounter bounter){
        return R.ok(bounterService.updateById(bounter));
    }

    /**
     * 刪除
     * @param id
     * @return
     */
    @DeleteMapping("/{id}")
    public R<?> delete(@PathVariable Long id) {
        return R.ok(bounterService.removeById(id));
    }
}

 

到此爲止就實現了一個完整業務的增刪改查了，是否是以爲挺簡單哉，那就趕快本身動手試試吧！

須要完整源碼的見下面GIthub傳送門：

https://github.com/13babybear/bounter-mybatis-plus