搭建基础后台框架及整合Swagger2及整合mybatisPlus代码器

Posted 2022-01-02 捡黄金的少年

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1、创建父工程管理所有的依赖

（1）、删除 src 目录，指定pom

（2）导入依赖

 <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.9.RELEASE</version>
        <relativePath/>
    </parent>

    <!--依赖版本管理-->
    <properties>
        <spring-cloud.version>Hoxton.SR5</spring-cloud.version>
        <cloud-alibaba.version>2.2.0.RELEASE</cloud-alibaba.version>
        <mybatis-plus.version>3.3.1</mybatis-plus.version>
        <druid.version>1.1.21</druid.version>
        <kaptcha.version>2.3.2</kaptcha.version>
        <fastjson.version>1.2.8</fastjson.version>
        <commons-lang.version>2.6</commons-lang.version>
        <commons-collections.version>3.2.2</commons-collections.version>
        <commons-io.version>2.6</commons-io.version>
        <httpclientutil.version>1.0.4</httpclientutil.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <java.version>1.8</java.version>
    </properties>


    <!--依赖声明-->
    <dependencyManagement>
        <dependencies>
            <!-- spring cloud -->
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>$spring-cloud.version</version>
                <type>pom</type>
                <!--maven不支持多继承，使用 import 来依赖管理配置-->
                <scope>import</scope>
            </dependency>

            <!-- alibaba 依赖-->
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>$cloud-alibaba.version</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <!--mybatis-plus启动器-->
            <dependency>
                <groupId>com.baomidou</groupId>
                <artifactId>mybatis-plus-boot-starter</artifactId>
                <version>$mybatis-plus.version</version>
            </dependency>
            <!--druid连接池-->
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid-spring-boot-starter</artifactId>
                <version>$druid.version</version>
            </dependency>

            <!-- Swagger -->
            <dependency>
                <groupId>com.spring4all</groupId>
                <artifactId>swagger-spring-boot-starter</artifactId>
                <version>1.9.1.RELEASE</version>
            </dependency>

            <!-- kaptcha 用于图形验证码 -->
            <dependency>
                <groupId>com.github.penggle</groupId>
                <artifactId>kaptcha</artifactId>
                <version>$kaptcha.version</version>
            </dependency>

            <!-- aliyun oss -->
            <dependency>
                <groupId>com.aliyun.oss</groupId>
                <artifactId>aliyun-sdk-oss</artifactId>
                <version>3.8.0</version>
            </dependency>

            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>fastjson</artifactId>
                <version>$fastjson.version</version>
            </dependency>

            <!--http请求工具-->
            <dependency>
                <groupId>com.arronlong</groupId>
                <artifactId>httpclientutil</artifactId>
                <version>$httpclientutil.version</version>
            </dependency>

            <!-- 工具类依赖 -->
            <dependency>
                <groupId>commons-lang</groupId>
                <artifactId>commons-lang</artifactId>
                <version>$commons-lang.version</version>
            </dependency>
            <dependency>
                <groupId>commons-collections</groupId>
                <artifactId>commons-collections</artifactId>
                <version>$commons-collections.version</version>
            </dependency>
            <dependency>
                <groupId>commons-io</groupId>
                <artifactId>commons-io</artifactId>
                <version>$commons-io.version</version>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>$java.version</source>
                    <target>$java.version</target>
                    <encoding>$project.build.sourceEncoding</encoding>
                </configuration>
            </plugin>
            <!--springboot 打包插件-->
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
        <resources>
            <resource>
                <!--编译时，默认情况下不会将    mapper.xml文件编译进去，
                src/main/java 资源文件的路径，
                **/*.xml 需要编译打包的文件类型是xml文件，
                -->
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
            </resource>
        </resources>
    </build>

2、创建工具类（jhj-blog-utils）子工程

（1）、导入工具类的依赖

  <dependencies>

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

        <!--mybatis-plus启动器-->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
        </dependency>
        <!--Druid连接池-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>

        <!-- 配置处理器 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <optional>true</optional>
        </dependency>

        <!--lombok setter,getter-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>

        <!-- swagger-->
        <dependency>
            <groupId>com.spring4all</groupId>
            <artifactId>swagger-spring-boot-starter</artifactId>
        </dependency>

        <!-- aliyun -->
        <!-- aliyun oss-->
        <dependency>
            <groupId>com.aliyun.oss</groupId>
            <artifactId>aliyun-sdk-oss</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
        </dependency>

        <!--http请求工具-->
        <!--  服务远程调用的依赖-->
        <dependency>
            <groupId>com.arronlong</groupId>
            <artifactId>httpclientutil</artifactId>
        </dependency>

        <!-- 工具类依赖 -->
        <dependency>
            <groupId>commons-lang</groupId>
            <artifactId>commons-lang</artifactId>
        </dependency>
        <dependency>
            <groupId>commons-collections</groupId>
            <artifactId>commons-collections</artifactId>
        </dependency>
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
        </dependency>
    </dependencies>

（2）、创建枚举类及统一接口进行管理工具类

package com.jhj.blog.utils.enums;

import lombok.AllArgsConstructor;
import lombok.Getter;

@Getter
@AllArgsConstructor //有参构造方法
public enum ResultEnum 

    SUCCESS(20000, "成功"),

    ERROR(999, "错误"),

    UNAUTHENTICATED(401, "请先通过身份认证"),

    AUTH_FAIL(1400, "认证失败"),

    // token异常
    TOKEN_PAST(1401, "身份过期，请求重新登录！"),

    TOKEN_ERROR(1402, "令牌错误"),

    HEADEA_ERROR(1403, "请求头错误"),

    AUTH_USERNAME_NONE(1405, "用户名不能为空"),

    AUTH_PASSWORD_NONE(1406, "密码不能为空"),

    MENU_NO(306, "没此权限，请联系管理员！");

    private Integer code;
    private String desc;

package com.jhj.blog.utils.base;


import com.alibaba.fastjson.JSON;
import com.jhj.blog.utils.enums.ResultEnum;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.Serializable;

/**
 * 用于封装接口统一响应结果
 */
@Data
@NoArgsConstructor // 无参构造方法
@AllArgsConstructor // 有参构造方法
public final class Result implements Serializable 

    private static final Logger logger = LoggerFactory.getLogger(Result.class);

    private static final long serialVersionUID = 1L;

    /**
     * 响应业务状态码
     */
    private Integer code;

    /**
     * 响应信息
     */
    private String message;

    /**
     * 响应中的数据
     */
    private Object data;

    public static Result ok() 
        return new Result(ResultEnum.SUCCESS.getCode(), ResultEnum.SUCCESS.getDesc(), null);
    

    public static Result ok(Object data) 
        return new Result(ResultEnum.SUCCESS.getCode(), ResultEnum.SUCCESS.getDesc(), data);
    

    public static Result ok(String message, Object data) 
        return new Result(ResultEnum.SUCCESS.getCode(), message, data);
    

    public static Result error(String message) 
        logger.debug("返回错误：code=, message=", ResultEnum.ERROR.getCode(), message);
        return new Result(ResultEnum.ERROR.getCode(), message, null);
    

    public static Result build(int code, String message) 
        logger.debug("返回结果：code=, message=", code, message);
        return new Result(code, message, null);
    

    public static Result build(ResultEnum resultEnum) 
        logger.debug("返回结果：code=, message=", resultEnum.getCode(), resultEnum.getDesc());
        return new Result(resultEnum.getCode(), resultEnum.getDesc(), null);
    
	
	public String toJsonString() 
        return JSON.toJSONString(this);

（3）、创建mybatisPlus的page 分页方法的封装实体类

package com.jhj.blog.utils.base;

import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;
import lombok.experimental.Accessors;

import java.io.Serializable;

/**
 * 请求参数基础类、带分页参数
 * @param <T>
 */
@Accessors(chain = true)
//@Accessors(chain = true)在lomBook中级联操作，setter 方法有返回值 this ，
// 所以可以连续点Page<T>().setCurrent(this.current).setSize(this.size)
@Data
public class BaseRequest<T> implements Serializable 



//    @ApiModelProperty(value = "页码", required = true) 注解是 Swagger 提供的，用于生成接口文档用的，
    @ApiModelProperty(value = "页码", required = true)
    private long current;

    @ApiModelProperty(value = "每页显示多少条", required = true)
    private long size;

    /**
     * 封装分页对象
     * @return
     */
    @ApiModelProperty(hidden = true) // hidden = true 不在swagger接口文档中显示
    public IPage<T> getPage() 
//        Page<T> tPage = new Page<>(this.current, this.size);相当于这样吧
        return new Page<T>().setCurrent(this.current).setSize(this.size);

（4）在resourse下面创建日志配置文件logback.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--梦学谷 www.mengxuegu.com -->

<configuration>
    <!-- 彩色日志 -->
    <!-- 彩色日志依赖的渲染类 -->
    <conversionRule conversionWord="clr" converterClass="org.springframework.boot.logging.logback.ColorConverter" />
    <conversionRule conversionWord="wex" converterClass="org.springframework.boot.logging.logback.WhitespaceThrowableProxyConverter" />
    <conversionRule conversionWord="wEx" converterClass="org.springframework.boot.logging.logback.ExtendedWhitespaceThrowableProxyConverter" />
    <!-- 彩色日志格式 -->
    <property name="CONSOLE_LOG_PATTERN" value="$CONSOLE_LOG_PATTERN:-%clr(%dHH:mm:ss.SSS)faint %clr($LOG_LEVEL_PATTERN:-%5p) %clr($PID:- )magenta %clr(---)faint %clr([%15.15t])faint %clr(%-40.40logger39)cyan %clr(:)faint %m%n$LOG_EXCEPTION_CONVERSION_WORD:-%wEx"/>
    <!-- ch.qos.logback.core.ConsoleAppender 表示控制台输出 -->
    <appender name="stdout" class="ch.qos.logback.core.ConsoleAppender">
        <layout class="ch.qos.logback.classic.PatternLayout">
                <pattern>$CONSOLE_LOG_PATTERN</pattern>
        </layout>
    </appender>
    <!--nacos相关日志级别-->
    <logger name="com.alibaba.nacos.client" level="ERROR" additivity="false"/>
    <root level="info">
        <appender-ref ref="stdout" />
    </root>
</configuration>

3、创建接口子工程（jhj-blog-api）

（1）、添加依赖

第一个工具类的依赖，第二个feign的依赖，后期做接口统一调度

 <dependencies>
        <dependency>
            <groupId>jhj-blog</groupId>
            <artifactId>jhj-blog-utils</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <!-- feign 调用服务接口 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>
    </dependencies>

(2)现在针对 mxg_category表做个测试

在jhj-blog-api子项目中添加该表的实体类

package com.jhj.blog.entities;

import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;
import lombok.EqualsAndHashCode;

import java.io.Serializable;
import java.util.Date;

/**
 * @program: jhj-blog
 * @ClassName Category
 * @description:
 * @author:蒋皓洁
 * @create: 2021-12-07 16:55
 * @Version 1.0
 **/
@ApiModel(value = "Category对象", description = "类别表描述")
@Data // lombok 注解，生成 setter，getter等
@TableName("mxg_category") // mybatis-plus注解，对应表名
public class Category implements Serializable 

    private static final long serialVersionUID = 1L;

    /**
     * 主键，分布式id
     */
    @ApiModelProperty(value = "主键")
    @TableId(value = "id", type = IdType.ASSIGN_ID)
    private String id;

    /**
     * 分类名称
     */
    @ApiModelProperty(value = "分类名称")
    private String name;

    /**
     * 备注
     */
    @ApiModelProperty(value = "备注")
    private String remark;

    /**
     * 状态(1:正常，0:禁用)
     */
    @ApiModelProperty(value = "状态(1:正常，0:禁用)")
    private Integer status;
    /**
     * 排序
     */
    @ApiModelProperty(value = "排序")
    private Integer sort;

    /**
     * 创建时间
     */
    @ApiModelProperty(value = "创建时间")
    private Date createDate;

    /**
     * 更新时间
     */
    @ApiModelProperty(value = "更新时间")
    private Date updateDate;

    /**
     * <p>
     * 标签表
     * </p>
     *
     * @author jiangHaoJie
     * @since 2021-12-08
     */

4、创建子工程（jhj-blog-article）做核心接口处理

（1）、添加pom依赖

添加了jhj-blog-api依赖因为jhj-blog-api依赖中包含jhj-blog-utils依赖，所以不用引入

    <dependencies>
        <dependency>
            <groupId>jhj-blog</groupId>
            <artifactId>jhj-blog-api</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!--热部署 ctrl+f9-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

（2）、添加application.yml

swagger:
  title: 博客系统接口文档
  description: 博客系统-分类&标签&文章&广告管理接口
  exclude-path: /error # 剔除Springboot自定义的error请求

server:
  port: 8001
  servlet:
    context-path: /article # 上下文件路径，请求前缀 ip:port/article

spring:
  application:
    name: article-server # 应用名
  # 数据源配置
  datasource:
    username: root
    password: root
    url: jdbc:mysql://127.0.0.1:3306/mxg_blog_article?useUnicode=true&characterEncoding=utf8&useSSL=false&serverTimezone=GMT%2B8&allowMultiQueries=true
    #mysql8版本以上驱动包指定新的驱动类
    driver-class-name: com.mysql.cj.jdbc.Driver
    #   数据源其他配置, 在 DruidConfig配置类中手动绑定
    initialSize: 8
    minIdle: 5
    maxActive: 20
    maxWait: 60000
    timeBetweenEvictionRunsMillis: 60000
    minEvictableIdleTimeMillis: 300000
    validationQuery: SELECT 1 FROM DUAL

mybatis-plus:
  type-aliases-package: com.jhj.blog.entities
  # xxxMapper.xml 路径
  mapper-locations: classpath*:com/jhj/blog/article/mapper/**/*.xml

# 日志级别，会打印sql语句
logging:
  level:
    com.jhj.blog.article.mapper: debug

其中下面这个表示配置swagger的统一配置项目的标题等，去除springboot中自带的error接口

swagger:
  title: 博客系统接口文档
  description: 博客系统-分类&标签&文章&广告管理接口
  exclude-path: /error # 剔除Springboot自定义的error请求

配置mybatisPlus的实体类路径，和mapper的扫描路径

mybatis-plus:
  type-aliases-package: com.jhj.blog.entities
  # xxxMapper.xml 路径
  mapper-locations: classpath*:com/jhj/blog/article/mapper/**/*.xml

配置日志打印SQL的mapper路径

logging:
  level:
    com.jhj.blog.article.mapper: debug

（3）配置mybatisPlus分页配置

@MapperScan("com.jhj.blog.article.mapper")//扫描指定的Map接口

@Configuration//标注配置类
@EnableTransactionManagement //开启事务管理

package com.jhj.blog.article.config;

import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.transaction.annotation.EnableTransactionManagement;

/**
 * @program: jhj-blog
 * @ClassName MybatisPlusConfig
 * @description:
 * @author:蒋皓洁
 * @create: 2021-12-08 15:00
 * @Version 1.0
 **/
@MapperScan("com.jhj.blog.article.mapper")//扫描Map接口
@Configuration//标注配置类
@EnableTransactionManagement  //开启事务管理
public class MybatisPlusConfig 
    /***
     * 分页插件
     * @return
     * 添加Bean注解，添加到容器中
     */
    @Bean
    public PaginationInterceptor paginationInterceptor() 
        return new PaginationInterceptor();

（4） mxg_category表的mapper层

package com.jhj.blog.article.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.jhj.blog.entities.Category;

/**
 * <p>
 * 文章分类表 Mapper 接口
 * </p>
 * @author
 */
public interface CategoryMapper extends BaseMapper<Category>

（5）server层

package com.jhj.blog.article.service;

import com.baomidou.mybatisplus.extension.service.IService;
import com.jhj.blog.article.req.CategoryREQ;
import com.jhj.blog.entities.Category;
import com.jhj.blog.utils.base.Result;

/**
 * 文章分类
 */
public interface ICategoryService extends IService<Category> 
    //分页条件查询分类信息
    Result queryPage(CategoryREQ req);

    /**
     * 获取所有正常状态的分类 status==1
     * findAllNormal
     */
    Result findAllNormal();

package com.jhj.blog.article.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.jhj.blog.article.mapper.CategoryMapper;
import com.jhj.blog.article.req.CategoryREQ;
import com.jhj.blog.article.service.ICategoryService;
import com.jhj.blog.entities.Category;
import com.jhj.blog.utils.base.Result;
import org.apache.commons.lang.StringUtils;
import org.springframework.stereotype.Service;

import java.util.Date;

/**
 * @program: jhj-blog
 * @ClassName CategoryServiceImpl
 * @description:
 * @author:蒋皓洁
 * @create: 2021-12-08 14:40
 * @Version 1.0
 * 继承ServiceImpl传入mapper，和实体entity
 **/
@Service
public class CategoryServiceImpl extends ServiceImpl<CategoryMapper, Category> implements ICategoryService 

    @Override
    public Result queryPage(CategoryREQ req) 
        QueryWrapper<Category> categoryQueryWrapper = new QueryWrapper<>();
        //分类名称
        if (StringUtils.isNotEmpty(req.getName())) 
            categoryQueryWrapper.like("name", req.getName());
        
        //分类状态
        if (req.getStatus() != null) 
            categoryQueryWrapper.eq("status", req.getStatus());
        
//        status 1正常 0 异常，降序排列(由高到底)orderByDesc,再对sort进行升序排列
        categoryQueryWrapper.orderByDesc("status").orderByAsc("sort");
        IPage<Category> categoryIPage = baseMapper.selectPage(req.getPage(), categoryQueryWrapper);

        return Result.ok(categoryIPage);
    

    @Override
    public Result findAllNormal() 
        QueryWrapper<Category> wrapper = new QueryWrapper<>();
        wrapper.eq("status", 1); // 1 正常，0 禁用
        return Result.ok(baseMapper.selectList(wrapper));
    

    @Override
    public boolean updateById(Category entity) 
        entity.setUpdateDate(new Date());
//     super调用父类的实现方法
        return super.updateById(entity);

重写了父类的 updateById的方法，将修改时候，设置最新时间，再返回父类的super.updateById(entity);方法

   @Override
    public boolean updateById(Category entity) 
        entity.setUpdateDate(new Date());
//     super调用父类的实现方法
        return super.updateById(entity);

（6）controller层

package com.jhj.blog.article.controller;

import com.jhj.blog.article.req.CategoryREQ;
import com.jhj.blog.article.service.ICategoryService;
import com.jhj.blog.entities.Category;
import com.jhj.blog.utils.base.Result;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiImplicitParam;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.*;

/**
 * @program: jhj-blog
 * @ClassName CategoryController
 * @description:
 * @author:蒋皓洁
 * @create: 2021-12-08 15:05
 * @Version 1.0
 **/
@Api(value = "分类管理接口", description = "显示分类管理的增删改查")
@RestController//所有的方法都会返回Json字符串进行相应
@RequestMapping("/category")
public class CategoryController 

    @Autowired
    private ICategoryService iCategoryService;

    @ApiOperation("根据分类名称及状态查询分类列表接口")
    @PostMapping("/search")
    public Result search(@RequestBody CategoryREQ req) 
        return iCategoryService.queryPage(req);
    

    @ApiOperation("根据ID查询分类接口")
    @ApiImplicitParam(name = "id", value = "类别ID", required = true)
    @GetMapping("/id")
    public Result view(@PathVariable("id") String id) 
        Category byId = iCategoryService.getById(id);
        return Result.ok(byId);
    

    @ApiOperation("更新分类信息")
    @PutMapping
    public Result update(@RequestBody Category category) 
        iCategoryService.updateById(category);
        return Result.ok();
    

    @ApiOperation("新增分类信息接口")
    @PostMapping
    public Result save(@RequestBody Category category) 
        boolean save = iCategoryService.save(category);
        if (save) 
            return Result.ok();
         else 
            return Result.error("更新失败");
        
    

    @ApiOperation("删除分类信息接口")
    @ApiImplicitParam(name = "id", value = "类别ID", required = true)
    @DeleteMapping("/id")
    public Result delete(@PathVariable("id") String id) 
        boolean b = iCategoryService.removeById(id);
        if (b) 
            return Result.ok();
         else 
            return Result.error("删除失败");
        
    
    /**
     * 查询所有正常的类别
     * @return
     */
    @ApiOperation("获取所有正常状态的分类接口")
    @GetMapping("/list")
    public Result list() 
        return iCategoryService.findAllNormal();

5、Swagger的使用

1、依赖

因为前面父Pom文件加入了下面这个依赖，所以在子工程（jhj-blog-article）不用添加其他依赖

        <dependency>
            <groupId>com.spring4all</groupId>
            <artifactId>swagger-spring-boot-starter</artifactId>
        </dependency>

2、启动类添加 @EnableSwagger2Doc 注解

@SpringBootApplication
@EnableSwagger2Doc
public class ArticleApplication 
    public static void main(String[] args) 
        SpringApplication.run(ArticleApplication.class, args);

3、请求实体类注解

@ApiModel：用在请求参数是对象上，描述该对象类的作用

@ApiModelProperty：用在请求参数是对象的属性上，描述对象属性的作用。 value：属性的描述 hidden：是否是查询条件属性, false:(默认值)在api文档显示，作为查询条件；true 隐藏，不是条件属性

@Data
@Accessors(chain = true)
//swagger的注解
@ApiModel(value = "CategoryREQ条件对象", description = "类别查询条件")
public class CategoryREQ extends BaseRequest<Category> 

    /**
     * 分类名称
     */
    @ApiModelProperty(value = "分类名称")
    private String name;
    /**
     * 状态(1:正常，0:禁用)
     */
    @ApiModelProperty(value = "状态")
    private Integer status;

4、接口注解

（1）接口类注解

@Api：用在 Controller 类上，描述该类的作用，注解参数： value="简要说明" description="详细描述该类的作用"

@Api(value = "分类管理接口", description = "显示分类管理的增删改查")
@RestController//所有的方法都会返回Json字符串进行相应
@RequestMapping("/category")
public class CategoryController

（2）方法上注解

@ApiOperation：用在 Controller 请求方法上，描述方法的作用。

  @ApiOperation("根据分类名称及状态查询分类列表接口")
    @PostMapping("/search")
    public Result search(@RequestBody CategoryREQ req) 
        return iCategoryService.queryPage(req);

@ApiImplicitParams：用在请求方法上，对多个请求参数增加描述。

@ApiImplicitParam：可单独使用，或在 @ApiImplicitParams 中使用，给方法的一个请求参数增加描述。

name：参数名

value：描述参数的作用

dataType：参数类型，参数类型，默认String，其它值 dataType="Integer"

defaultValue：参数默认值

required：参数是否必传（true/false）

paramTpye：指定参数放在哪些地方（header/query/path/body/form）

header ：参数在request headers 里边提交@RequestHeader

query ：直接跟参数完成自动映射赋值 @RequestParam

path ：以路径变量的形式提交数据 @PathVariable

body ：以流的形式提交仅支持POST（不常用） form ：以form表单的形式提交仅支持POST （不常用）

    @ApiOperation("根据ID查询分类接口")
    @ApiImplicitParam(name = "id", value = "类别ID", required = true)
    @GetMapping("/id")
    public Result view(@PathVariable("id") String id) 
        Category byId = iCategoryService.getById(id);
        return Result.ok(byId);

// 请求方法有多个请求参数 size， current
@ApiImplicitParams(
 @ApiImplicitParam(name="current", value="页码", required=true, paramType="path", 
dataType="int"),
 @ApiImplicitParam(name="size", value="每页记录数", required=true, paramType="path", 
dataType="int")
)
@ApiOperation("根据分类名称与状态查询分类列表接口")
@PostMapping("/search/current/size")
Result search(@RequestBody CategoryREQ req,
 @PathVariable int current, @PathVariable int size);

5、启动项目

访问地址：http://127.0.0.1:8001/article/swagger-ui.html

以新增接口为例

 @ApiOperation("新增分类信息接口")
    @PostMapping
    public Result save(@RequestBody Category category) 
        boolean save = iCategoryService.save(category);
        if (save) 
            return Result.ok();
         else 
            return Result.error("更新失败");

查看传入对象字段属性

6、创建代码生成器子工程（jhj-blog-generator）

1、添加依赖，（1）、工具类依赖，（2）、mybatisPlus代码生成器依赖（3）、模本引擎依赖

<dependencies>
        <dependency>
            <groupId>jhj-blog</groupId>
            <artifactId>jhj-blog-utils</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <!-- 代码生成器核心依赖 -->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-generator</artifactId>
            <version>3.3.2</version>
        </dependency>
        <dependency>
            <groupId>org.freemarker</groupId>
            <artifactId>freemarker</artifactId>
        </dependency>
    </dependencies>

2、添加代码生成器

package com.jhj.generator;

import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.core.exceptions.MybatisPlusException;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.baomidou.mybatisplus.generator.AutoGenerator;
import com.baomidou.mybatisplus.generator.config.DataSourceConfig;
import com.baomidou.mybatisplus.generator.config.GlobalConfig;
import com.baomidou.mybatisplus.generator.config.PackageConfig;
import com.baomidou.mybatisplus.generator.config.StrategyConfig;
import com.baomidou.mybatisplus.generator.config.rules.DateType;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
import com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine;

import java.util.Scanner;

// 执行 main 方法控制台输入模块表名回车自动生成对应项目目录中
public class CodeGenerator 

    // 生成的代码放到哪个工程中
    private static String PROJECT_NAME = "jhj-blog-article";

    // 数据库名称
    private static String DATABASE_NAME = "mxg_blog_article";

    // 子包名
    private static String MODULE_NAME = "article";

    public static void main(String[] args) 
        // 代码生成器
        AutoGenerator mpg = new AutoGenerator();

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

        // 全局配置
        GlobalConfig gc = new GlobalConfig();
        String projectPath = System.getProperty("user.dir") + "/";
        gc.setOutputDir(projectPath + PROJECT_NAME +"/src/main/java");
        gc.setIdType(IdType.ASSIGN_ID); // 分布式id
        gc.setAuthor("jiangHaoJie");
        gc.setFileOverride(true); //覆盖现有的,覆盖代码
        gc.setOpen(false); //是否生成后打开
        gc.setDateType(DateType.ONLY_DATE);
        gc.setSwagger2(true); //实体属性 Swagger2 注解
        mpg.setGlobalConfig(gc);

        // 包配置
        PackageConfig pc = new PackageConfig();
        pc.setParent("com.jhj.blog"); //父包名
        pc.setController(MODULE_NAME+".controller"); // com.mengxuegu.blog.aritcle.controller
        pc.setService(MODULE_NAME+".service");
        pc.setServiceImpl(MODULE_NAME+".service.impl");
        pc.setMapper(MODULE_NAME+".mapper");
        pc.setXml(MODULE_NAME+".mapper.xml");
        pc.setEntity("entities");//实体类存储包名 com.mengxuegu.blog.entities
        mpg.setPackageInfo(pc);


        // 策略配置
        StrategyConfig strategy = new StrategyConfig();
        strategy.setNaming(NamingStrategy.underline_to_camel);
        strategy.setColumnNaming(NamingStrategy.underline_to_camel);
        strategy.setEntityLombokModel(true); //使用lombok
        strategy.setEntitySerialVersionUID(true);// 实体类的实现接口Serializable
        strategy.setRestControllerStyle(true); // @RestController
        strategy.setInclude(scanner("表名，多个英文逗号分割").split(","));
        strategy.setControllerMappingHyphenStyle(true);
        strategy.setTablePrefix("mxg_"); // 去掉表前缀
        mpg.setStrategy(strategy);

        mpg.setTemplateEngine(new FreemarkerTemplateEngine());
        mpg.execute();
    


    /**
     * <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 + "！");

3、点击运行