springboot结合mybatis-plus快速生成项目模板的方法

mybatis-plus简介：

Mybatis-Plus（简称MP）是一个 Mybatis 的增强工具，在 Mybatis 的基础上只做增强不做改变，为简化开发、提高效率而生。这是官方给的定义，关于mybatis-plus的更多介绍及特性，可以参考mybatis-plus官网。那么它是怎么增强的呢？其实就是它已经封装好了一些crud方法，我们不需要再写xml了，直接调用这些方法就行，就类似于JPA。

项目模板

1、项目概览

项目结构

创建项目时，父项目用springboot，子项目用maven，父项目统一管理，子项目分模块

springboot父项目（子项目用maven建）
- common模块
- web模块
- .......

父项目pom.xml：统一管理版本

<properties>
    <!--java8-->
    <java.version>1.8</java.version>
    <!--mybatis-plus-->
    <mp.version>3.4.2</mp.version>
    <!--swagger-->
    <swagger.version>3.0.0</swagger.version>
    <!--velocity模板引擎-->
    <velocity.version>2.3</velocity.version>
    <!--java连接数据库-->
    <mysql-connect-java.version>8.0.25</mysql-connect-java.version>
    <!--velocity-->
    <velocity.version>2.3</velocity.version>
    <!--mybatis-plus-generator-->
    <mybatis-plus-generator.version>3.4.1</mybatis-plus-generator.version>
    <!--knife4j-->
    <knife4j.version>3.0.2</knife4j.version>
</properties>

<dependencyManagement>

    <dependencies>

        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>${mp.version}</version>
        </dependency>

        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-generator</artifactId>
            <version>${mybatis-plus-generator.version}</version>
        </dependency>

        <dependency>
            <groupId>org.apache.velocity</groupId>
            <artifactId>velocity-engine-core</artifactId>
            <version>${velocity.version}</version>
        </dependency>

        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>${swagger.version}</version>
        </dependency>

        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>${swagger.version}</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql-connect-java.version}</version>
        </dependency>
        
        <dependency>
                <groupId>com.github.xiaoymin</groupId>
                <artifactId>knife4j-spring-boot-starter</artifactId>
                <version>${knife4j.version}</version>
        </dependency>

    </dependencies>

</dependencyManagement>


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

子项目pom.xml：公共模块（common）提取出来

<dependencies>

    <!--controller相关-->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

    <!--mybatis-plus-->
    <dependency>
        <groupId>com.baomidou</groupId>
        <artifactId>mybatis-plus-boot-starter</artifactId>
    </dependency>

    <!--代码生成器-->
    <dependency>
        <groupId>com.baomidou</groupId>
        <artifactId>mybatis-plus-generator</artifactId>
    </dependency>
    <dependency>
        <groupId>org.apache.velocity</groupId>
        <artifactId>velocity-engine-core</artifactId>
    </dependency>

    <!--swagger-->
    <dependency>
        <groupId>io.springfox</groupId>
        <artifactId>springfox-swagger2</artifactId>
    </dependency>
    <dependency>
        <groupId>io.springfox</groupId>
        <artifactId>springfox-swagger-ui</artifactId>
    </dependency>

    <!--java连接数据库-->
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
    </dependency>

    <!--lombok-->
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
    </dependency>
    
    <!--knife4j-->
    <dependency>
                <groupId>com.github.xiaoymin</groupId>
                <artifactId>knife4j-spring-boot-starter</artifactId>
    </dependency>

</dependencies>

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

子项目web模块pom.xml（直接引用common模块）

<dependencies>
    <dependency>
        <groupId>cn.jie</groupId>
        <artifactId>admin-base-common</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </dependency>
</dependencies>

代码生成器

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();
        help.append("请输入" + tip + "：");
        System.out.println(help.toString());
        if (scanner.hasNext()) {
            String ipt = scanner.next();
            if (StringUtils.isNotBlank(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 = scanner("项目路径");
        //项目生成路径
        gc.setOutputDir(projectPath + "/src/main/java");
        gc.setAuthor("sky");
        //打开资源管理器
        gc.setOpen(false);
        //开启swagger
        gc.setSwagger2(true);
        //覆盖文件
        gc.setFileOverride(false);

        gc.setServiceName("%sService");
        //主键自增
        gc.setIdType(IdType.AUTO);
        //java.util.date
        gc.setDateType(DateType.ONLY_DATE);
        mpg.setGlobalConfig(gc);


        // 数据源配置
        DataSourceConfig dsc = new DataSourceConfig();
        dsc.setUrl("jdbc:mysql://localhost:3306/adminweb?useUnicode=true&useSSL=false&characterEncoding=utf8&serverTimezone=GMT%2B8");
        // dsc.setSchemaName("public");
        dsc.setDriverName("com.mysql.cj.jdbc.Driver");
        dsc.setUsername("root");
        dsc.setPassword("root");
        dsc.setDbType(DbType.MYSQL);
        mpg.setDataSource(dsc);

        // 包配置
        PackageConfig pc = new PackageConfig();
        pc.setModuleName(scanner("模块名"));
        pc.setParent("cn.jie");
        pc.setEntity("entity");
        pc.setMapper("mapper");
        pc.setController("controller");
        pc.setService("service");
        pc.setServiceImpl("service.impl");
        mpg.setPackageInfo(pc);


        // 策略配置
        StrategyConfig strategy = new StrategyConfig();
        //表
        strategy.setInclude(scanner("表名，多个英文逗号分割").split(","));
        //驼峰命名
        strategy.setNaming(NamingStrategy.underline_to_camel);
        strategy.setColumnNaming(NamingStrategy.underline_to_camel);

        //lombok
        strategy.setEntityLombokModel(true);
        //restful
        strategy.setRestControllerStyle(true);

        strategy.setControllerMappingHyphenStyle(true);
        mpg.setStrategy(strategy);
        mpg.execute();
    }

}

springboot配置

spring:
  application:
    name: admin-base-web

  datasource:
    type:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/adminweb?useUnicode=true&useSSL=false&characterEncoding=utf8&serverTimezone=GMT%2B8
    username: root
    password: root
  jackson:
    date-format: yyyy-MM-dd HH:mm:ss
    time-zone: GMT+8

server:
  port: 8081

mybatis-plus:
  global-config:
    db-config:
      logic-delete-field: deleted  # 全局逻辑删除的实体字段名(since 3.3.0,配置后可以忽略不配置步骤2)
      logic-delete-value: 1 # 逻辑已删除值(默认为 1)
      logic-not-delete-value: 0 # 逻辑未删除值(默认为 0)

  mapper-locations: classpath*:/mapper/*.xml

2、美化swagger-ui

swagger注意要用3.0.0版本

配置完swagger2config

@Configuration
@EnableSwagger2
@EnableKnife4j
@Import(BeanValidatorPluginsConfiguration.class)
public class Swagger2Config {

    @Bean(value = "defaultApi2")
    public Docket defaultApi2() {
        Docket docket=new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(new ApiInfoBuilder()
                        //.title("swagger-bootstrap-ui-demo RESTful APIs")
                        .description("物资管理系统API文档")
                        .termsOfServiceUrl("https://www.cnblogs.com/thatbluesky/")
                        .contact(new Contact("我的博客","https://www.cnblogs.com/thatbluesky/","1879186403@qq.com"))
                        .version("1.0")
                        .build())
                //分组名称
                .groupName("1.0版本")
                .select()
                //这里指定Controller扫描包路径
                .apis(RequestHandlerSelectors.basePackage("cn.jie.system.controller"))
                .paths(PathSelectors.any())
                .build();
        return docket;
    }

}

访问：http://localhost:8081/doc.html

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编程技巧

目录

mybatis-plus简介：

项目模板

1、项目概览

2、美化swagger-ui