SpringBoot系列十五：整合Swagger

不念不忘少年蓝@ 2022-10-01 09:52 205阅读 0赞

Swagger 是一个规范和完整的框架，用于生成、描述、调用和可视化 RESTful 风格的 Web 服务。总体目标是使客户端和文件系统作为服务器以同样的速度来更新。文件的方法，参数和模型紧密集成到服务器端的代码，允许API来始终保持同步。  
1、引入依赖

<dependency>
        <groupId>io.springfox</groupId>
        <artifactId>springfox-swagger2</artifactId>
        <version>2.7.0</version>
    </dependency>
    <dependency>
        <groupId>io.springfox</groupId>
        <artifactId>springfox-swagger-ui</artifactId>
        <version>2.7.0</version>
    </dependency>

2、Swagger配置类

package com.swaggerTest;
     
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    import springfox.documentation.builders.ApiInfoBuilder;
    import springfox.documentation.builders.PathSelectors;
    import springfox.documentation.builders.RequestHandlerSelectors;
    import springfox.documentation.service.ApiInfo;
    import springfox.documentation.spi.DocumentationType;
    import springfox.documentation.spring.web.plugins.Docket;
    import springfox.documentation.swagger2.annotations.EnableSwagger2;
     
    /**
     * Swagger2配置类
     * 在与spring boot集成时，放在与Application.java同级的目录下。
     * 通过@Configuration注解，让Spring来加载该类配置。
     * 再通过@EnableSwagger2注解来启用Swagger2。
     */
    @Configuration
    @EnableSwagger2
    public class Swagger2 {
        
        /**
         * 创建API应用
         * apiInfo() 增加API相关信息
         * 通过select()函数返回一个ApiSelectorBuilder实例,用来控制哪些接口暴露给Swagger来展现，
         * 本例采用指定扫描的包路径来定义指定要建立API的目录。
         * @return
         */
        @Bean
        public Docket createRestApi() {
            return new Docket(DocumentationType.SWAGGER_2)
                    .apiInfo(apiInfo())
                    .select()
                    .apis(RequestHandlerSelectors.basePackage("com.swaggerTest.controller"))
                    .paths(PathSelectors.any())
                    .build();
        }
        
        /**
         * 创建该API的基本信息（这些基本信息会展现在文档页面中）
         * 访问地址：http://项目实际地址/swagger-ui.html
         * @return
         */
        private ApiInfo apiInfo() {
            return new ApiInfoBuilder()
                    .title("Spring Boot中使用Swagger2构建RESTful APIs")
                    .description("更多请关注http://www.baidu.com")
                    .termsOfServiceUrl("http://www.baidu.com")
                    .contact("sunf")
                    .version("1.0")
                    .build();
        }
    }

3、Swagger注解  
@Api：用在类上，说明该类的作用。  
@ApiOperation：注解来给API增加方法说明。  
@ApiImplicitParams : 用在方法上包含一组参数说明。  
@ApiImplicitParam：用来注解来给方法入参增加说明。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpemhpcWlhbmcxMjE3_size_16_color_FFFFFF_t_70]  
@ApiResponses：用于表示一组响应  
@ApiResponse：用在@ApiResponses中，一般用于表达一个错误的响应信息。  
 code：数字，例如400。  
 message：信息，例如"请求参数没填好"。  
 response：抛出异常的类 。  
@ApiModel：描述一个Model的信息（一般用在请求参数无法使用@ApiImplicitParam注解进行描述的时候）  
@ApiModelProperty：描述一个model的属性。

4、使用

package com.swaggerTest.controller;
     
    import org.springframework.stereotype.Controller;
    import org.springframework.util.StringUtils;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestMethod;
    import org.springframework.web.bind.annotation.RequestParam;
    import org.springframework.web.bind.annotation.ResponseBody;
    import io.swagger.annotations.Api;
    import io.swagger.annotations.ApiImplicitParam;
    import io.swagger.annotations.ApiImplicitParams;
    import io.swagger.annotations.ApiOperation;
     
    /**
     * 一个用来测试swagger注解的控制器
     * 注意@ApiImplicitParam的使用会影响程序运行，如果使用不当可能造成控制器收不到消息
     */
    @Controller
    @RequestMapping("/say")
    @Api(value = "一个用来测试swagger注解的控制器")
    public class SayController {
        
        @ResponseBody
        @RequestMapping(value ="/getUserName", method= RequestMethod.GET)
        @ApiOperation(value="根据用户编号获取用户姓名", notes="test: 仅1和2有正确返回")
        @ApiImplicitParam(paramType="query", name = "userNumber", value = "用户编号", required = true, dataType = "Integer")
        public String getUserName(@RequestParam Integer userNumber){
            if(userNumber == 1){
                return "张三丰";
            }
            else if(userNumber == 2){
                return "慕容复";
            }
            else{
                return "未知";
            }
        }
        
        @ResponseBody
        @RequestMapping("/updatePassword")
        @ApiOperation(value="修改用户密码", notes="根据用户id修改密码")
        @ApiImplicitParams({
            @ApiImplicitParam(paramType="query", name = "userId", value = "用户ID", required = true, dataType = "Integer"),
            @ApiImplicitParam(paramType="query", name = "password", value = "旧密码", required = true, dataType = "String"),
            @ApiImplicitParam(paramType="query", name = "newPassword", value = "新密码", required = true, dataType = "String")
        })
        public String updatePassword(@RequestParam(value="userId") Integer userId, @RequestParam(value="password") String password, 
                @RequestParam(value="newPassword") String newPassword){
          if(userId <= 0 || userId > 2){
              return "未知的用户";
          }
          if(StringUtils.isEmpty(password) || StringUtils.isEmpty(newPassword)){
              return "密码不能为空";
          }
          if(password.equals(newPassword)){
              return "新旧密码不能相同";
          }
          return "密码修改成功!";
        }
    }

5、接收对象传参

package com.lizhiqiang.api.model.base;
     
    import io.swagger.annotations.ApiModel;
    import io.swagger.annotations.ApiModelProperty;
     
    /**
     * 医生对象模型
     */
    @ApiModel(value="医生对象模型")
    public class DemoDoctor{
    
        @ApiModelProperty(value="id" ,required=true)
        private Integer id;
        
        @ApiModelProperty(value="医生姓名" ,required=true)
        private String name;
     
        public Integer getId() {
            return id;
        }
     
        public void setId(Integer id) {
            this.id = id;
        }
     
        public String getName() {
            return name;
        }
     
        public void setName(String name) {
            this.name = name;
        }
     
        @Override
        public String toString() {
            return "DemoDoctor [id=" + id + ", name=" + name + "]";
        }
        
    }

在后台采用对象接收参数时，Swagger自带的工具采用的是JSON传参，测试时需要在参数上加入@RequestBody 注解。

package com.lizhiqiang.api.controller.app;
     
    import java.util.ArrayList;
    import java.util.List;
    import javax.servlet.http.HttpServletRequest;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestBody;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestMethod;
    import org.springframework.web.bind.annotation.RequestParam;
    import org.springframework.web.bind.annotation.ResponseBody;
    import com.github.pagehelper.PageInfo;
    import com.lizhiqiang.api.exception.HttpStatus401Exception;
    import com.lizhiqiang.api.model.base.DemoDoctor; 
    import io.swagger.annotations.Api;
    import io.swagger.annotations.ApiImplicitParam;
    import io.swagger.annotations.ApiImplicitParams;
    import io.swagger.annotations.ApiOperation;
     
    /**
     * 医生类（模拟）
     */
    @RequestMapping("/api/v1")
    @Controller
    @Api(value = "DoctorTestController-医生信息接口模拟")
    public class DoctorTestController {
        
        /**
         * @param doctor 医生类对象
         * @return
         * @throws Exception
         */
        @ResponseBody
        @RequestMapping(value="/doctor",  method= RequestMethod.POST )
        @ApiOperation(value="添加医生信息", notes="")
        public String addDoctor(@RequestBody DemoDoctor doctor) throws Exception{
            if(null == doctor || doctor.getId() == null){
                throw new HttpStatus401Exception("添加医生失败","DT3388","未知原因","请联系管理员");
            }
            try {
              System.out.println("成功----------->"+doctor.getName());  
            } catch (Exception e) {
                throw new HttpStatus401Exception("添加医生失败","DT3388","未知原因","请联系管理员");
            }
            
            return doctor.getId().toString();
        }
        
        /**
         * 删除医生
         * @param doctorId 医生ID
         * @return
         */
        @ResponseBody
        @RequestMapping(value="/doctor/{doctorId}",  method= RequestMethod.DELETE )
        @ApiOperation(value="删除医生信息", notes="")
        @ApiImplicitParam(paramType="query", name = "doctorId", value = "医生ID", required = true, dataType = "Integer")
        public String deleteDoctor(@RequestParam Integer doctorId){
            if(doctorId > 2){
                return "删除失败";
            }
            return "删除成功";
        }
        
        /**
         * 修改医生信息
         * @param doctorId 医生ID
         * @param doctor 医生信息
         * @return
         * @throws HttpStatus401Exception
         */
        @ResponseBody
        @RequestMapping(value="/doctor/{doctorId}",  method= RequestMethod.POST )
        @ApiOperation(value="修改医生信息", notes="")
        @ApiImplicitParam(paramType="query", name = "doctorId", value = "医生ID", required = true, dataType = "Integer")
        public String updateDoctor(@RequestParam Integer doctorId, @RequestBody DemoDoctor doctor) throws HttpStatus401Exception{
            if(null == doctorId || null == doctor){
                throw new HttpStatus401Exception("修改医生信息失败","DT3391","id不能为空","请修改");
            }
            if(doctorId > 5 ){
                throw new HttpStatus401Exception("医生不存在","DT3392","错误的ID","请更换ID");
            }
            System.out.println(doctorId);
            System.out.println(doctor);
            return "修改成功";
        }
        
        /**
         * 获取医生详细信息
         * @param doctorId 医生ID
         * @return
         * @throws HttpStatus401Exception
         */
        @ResponseBody
        @RequestMapping(value="/doctor/{doctorId}",  method= RequestMethod.GET )
        @ApiOperation(value="获取医生详细信息", notes="仅返回姓名..")
        @ApiImplicitParam(paramType="query", name = "doctorId", value = "医生ID", required = true, dataType = "Integer")
        public DemoDoctor getDoctorDetail(@RequestParam Integer doctorId) throws HttpStatus401Exception{
            System.out.println(doctorId);
            if(null == doctorId){
                throw new HttpStatus401Exception("查看医生信息失败","DT3390","未知原因","请联系管理员");
            }
            if(doctorId > 3){
                throw new HttpStatus401Exception("医生不存在","DT3392","错误的ID","请更换ID");
            }
            DemoDoctor doctor = new DemoDoctor();
            doctor.setId(1);
            doctor.setName("测试员");
            return doctor;
        }
        
        /**
         * 获取医生列表
         * @param pageIndex 当前页数
         * @param pageSize 每页记录数
         * @param request
         * @return
         * @throws HttpStatus401Exception
         */
        @ResponseBody
        @RequestMapping(value="/doctor",  method= RequestMethod.GET )
        @ApiOperation(value="获取医生列表", notes="目前一次全部取，不分页")
        @ApiImplicitParams({
            @ApiImplicitParam(paramType="header", name = "token", value = "token", required = true, dataType = "String"),
            @ApiImplicitParam(paramType="query", name = "pageIndex", value = "当前页数", required = false, dataType = "String"),
            @ApiImplicitParam(paramType="query", name = "pageSize", value = "每页记录数", required = true, dataType = "String"),
        })
        public PageInfo<DemoDoctor> getDoctorList(@RequestParam(value = "pageIndex", required = false, defaultValue = "1") Integer pageIndex,
                @RequestParam(value = "pageSize", required = false) Integer pageSize,
                HttpServletRequest request) throws HttpStatus401Exception{
            
            String token = request.getHeader("token");
            if(null == token){
                throw new HttpStatus401Exception("没有权限","SS8888","没有权限","请查看操作文档");
            }
            if(null == pageSize){
                throw new HttpStatus401Exception("每页记录数不粗安在","DT3399","不存在pageSize","请查看操作文档");
            }
            
            DemoDoctor doctor1 = new DemoDoctor();
            doctor1.setId(1);
            doctor1.setName("测试员1");
            DemoDoctor doctor2 = new DemoDoctor();
            doctor2.setId(2);
            doctor2.setName("测试员2");
            
            List<DemoDoctor> doctorList = new ArrayList<DemoDoctor>();
            doctorList.add(doctor1);
            doctorList.add(doctor2);
            return new PageInfo<DemoDoctor>(doctorList);
        }
        
    }

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