一、导包
<!--引入swagger-->
<dependency><groupId>io.springfox</groupId><artifactId>springfox-swagger2</artifactId><version>2.9.2</version>
</dependency>
<!--前端的UI界面-->
<dependency><groupId>io.springfox</groupId><artifactId>springfox-swagger-ui</artifactId><version>2.9.2</version>
</dependency>二、编写配置类
import com.github.xiaoymin.swaggerbootstrapui.annotations.EnableSwaggerBootstrapUI;
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.service.Contact;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;@Configuration
@EnableSwagger2
@EnableSwaggerBootstrapUI
public class SwaggerConfig {@Beanpublic Docket createRestApi() {return new Docket(DocumentationType.SWAGGER_2).apiInfo(apiInfo()).select().apis(RequestHandlerSelectors.basePackage("com.example.swaggerdemo")).paths(PathSelectors.any()).build();}private ApiInfo apiInfo() {return new ApiInfoBuilder()// 标题.title("Spring Boot中使用Swagger2构建RESTful APIs 的标题")// Swagger文档的版本号.version("1.0")// 标题的详细描述.description("Spring Boot中使用Swagger2构建RESTful APIs 的详细描述")// 友链，用的少.termsOfServiceUrl("http://www.baidu.com")// 联系人信息.contact(new Contact("蒋劲豪","http://www.hao123.com","718009739@qq.com"))// 协议，自定义的.license("Apache 2.0")// 把协议变成超链接.licenseUrl("http://www.bilibili.com").build();}
}三、接口文档的访问地址
http://localhost:8080/swagger-ui.html四、常见问题
SpringBoot和Swagger有版本不兼容问题，如果版本不兼容会出现以下异常：
org.springframework.context.ApplicationContextException: Failed to start bean 'documentationPluginsBootstrapper'; nested exception is java.lang.NullPointerException
解决办法：
（一）换兼容的版本
（二）改配置文件
spring:mvc:pathmatch:matching-strategy: ant_path_matcher五、Controller类的案例
import com.example.swaggerdemo.entity.User;
import io.swagger.annotations.*;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;@RestController
@RequestMapping("/userController")
@Api(tags = {"用户接口"})
public class UserController {@ApiOperation(value = "新增用户接口", notes = "新增用户接口的详细描述")// 对请求参数进行说明@ApiImplicitParams({@ApiImplicitParam(name = "id", value = "用户编号", dataType = "string",paramType = "query", required = true, defaultValue = "1001"),// 如果参数在请求头中 paramType = "header"// 如果参数在路径中 paramType = "path"// 如果参数在请求体中 paramType = "query"@ApiImplicitParam(name = "name", value = "用户姓名", dataType = "string",paramType = "query", required = true, defaultValue = "tom")})// 对响应结果进行说明@ApiResponses({@ApiResponse(code = 200, message = "success", response = User.class)})@PostMapping("/addUser")public String addUser(User user) {return "新增用户成功！";}
}
六、实体类的案例
package com.example.swaggerdemo.entity;import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;@Data
@NoArgsConstructor
@AllArgsConstructor
@ApiModel(value = "User", description = "用户的实体类")
public class User {@ApiModelProperty(value = "用户编号")private String id;@ApiModelProperty(value = "用户姓名")private String name;
}
七、换其他的前端UI
如果不喜欢默认的UI界面，可以换一个前端UI界面；
（一）导包
<!--新UI-->
<dependency><groupId>com.github.xiaoymin</groupId><artifactId>swagger-bootstrap-ui</artifactId><version>1.9.6</version>
</dependency>（二）添加注解
在SwaggerConfig配置类上加上注解
@EnableSwaggerBootstrapUI（三）接口文档的访问地址
http://localhost:8080/doc.html
)
