SwaggerUI 接口文档
在项目开发中，接口文档一直是个头疼的问题。本来项目开发时间就紧张，还需要另外写文档给调用方看，但是不写又不行，无法沟通，写了还要随着项目迭代一直更新，费时费力。那有没有工具能够识别我们的代码自动生成接口文档呢？答案是有的。这篇文章就介绍市面上常用的接口文档生成框架：Swagger-UI的简单使用。
讲Swagger-UI前需先了解下Swagger，https://swagger.io/，Swagger是一个常用的接口工具。官方给自己的定义是：THE WORLD'S MOST POPULAR API TOOLING。Swagger-UI只是其中的一块，主要是通过代码里的注解，生成在线的接口文档界面，以便沟通。除了Swagger-UI，Swagger还有Swagger Editor（在线编辑接口文档）和Swagger Codegen（根据接口文档生成代码，可以生成各种语言的代码，厉害吧！）。
先看效果
首先来两张高清大图，看看生成的效果。
整合接入步骤
（以一个普通的SpringMVC项目为例）
加入必须的依赖包（maven）
io.springfox
springfox-swagger2
2.8.0
io.springfox
springfox-swagger-ui
2.8.0
代码方式添加相关配置
package com.zhangzw.swagger.spring;
import io.swagger.annotations.ApiOperation;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.http.HttpServletResponse;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.builders.ResponseMessageBuilder;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.ResponseMessage;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;
@Configuration
@ComponentScan("com.zhangzw.swagger")
@EnableWebMvc
@EnableSwagger2
public class SpringConfiguration extends WebMvcConfigurerAdapter {
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
super.addResourceHandlers(registry);
registry.addResourceHandler("swagger-ui.html").addResourceLocations("classpath:/META-INF/resources/");
registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");
registry.addResourceHandler("/swagger/**").addResourceLocations("classpath:/swagger/");
}
@Bean
public Docket docket() {
List responseMessages = new ArrayList();
responseMessages.add(new ResponseMessageBuilder().code(HttpServletResponse.SC_OK).message("操作成功").build());
responseMessages.add(new ResponseMessageBuilder().code(HttpServletResponse.SC_NOT_FOUND).message("资源不存在").build());
responseMessages.add(new ResponseMessageBuilder().code(HttpServletResponse.SC_INTERNAL_SERVER_ERROR).message("服务器异常").build());
return new Docket(DocumentationType.SWAGGER_2)
.apiInfo(apiInfo())
.useDefaultResponseMessages(false)
.globalResponseMessage(RequestMethod.GET, responseMessages)
.globalResponseMessage(RequestMethod.POST, responseMessages)
.globalResponseMessage(RequestMethod.DELETE, responseMessages)
.select()
.apis(RequestHandlerSelectors.withMethodAnnotation(ApiOperation.class))
.paths(PathSelectors.any())
.build();
}
private ApiInfo apiInfo() {
return new ApiInfoBuilder().title("测试项目").version("1.0.0").description("这是项目描述").build();
}
}
修改Controller接口
package com.zhangzw.swagger.web;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
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.ResponseBody;
@Controller
@Api(tags="订单模块") // Swagger-UI 描述在类上面，可以做分组。
public class OrderController {
@RequestMapping(method = RequestMethod.GET, value = "/order/orderInfo/{orderId:.+}")
@ResponseBody
@ApiOperation(value = "获取订单") // 让Swagger-UI解析这个接口。
public OrderInfo getOrderInfo(String orderId) {
return new OrderInfo();
}
@RequestMapping(method = RequestMethod.DELETE, value = "/order/delOrder.do")
@ResponseBody
@ApiOperation(value = "删除订单")
public BaseResponse delOrder(String orderId) {
return new BaseResponse();
}
@RequestMapping(method = RequestMethod.POST, value = "/order/queryOrderList.do")
@ResponseBody
@ApiOperation(value = "查询订单列表")
public QueryOrderListResponse getOrderInfo(@RequestBody QueryOrderListRequest req) {
return new QueryOrderListResponse();
}
}
如果接口使用DTO接收和返回数据，可以在DTO上加入注解，如：
package com.zhangzw.swagger.web;
import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import java.util.Date;
@ApiModel(description = "订单实体")
public class OrderInfo {
@ApiModelProperty(value = "订单号", example = "201701011234", notes = "订单的编号")
private String orderNo;
@ApiModelProperty("创建时间")
private Date createTime;
@ApiModelProperty("中介公司编码")
private String agencyCode;
@ApiModelProperty("中介公司名称")
private String agencyName;
@ApiModelProperty("门店ID")
private String storeId;
@ApiModelProperty("门店名称")
private String storeName;
public String getOrderNo() {
return orderNo;
}
public void setOrderNo(String orderNo) {
this.orderNo = orderNo;
}
public Date getCreateTime() {
return createTime;
}
public void setCreateTime(Date createTime) {
this.createTime = createTime;
}
public String getAgencyCode() {
return agencyCode;
}
public void setAgencyCode(String agencyCode) {
this.agencyCode = agencyCode;
}
public String getAgencyName() {
return agencyName;
}
public void setAgencyName(String agencyName) {
this.agencyName = agencyName;
}
public String getStoreId() {
return storeId;
}
public void setStoreId(String storeId) {
this.storeId = storeId;
}
public String getStoreName() {
return storeName;
}
public void setStoreName(String storeName) {
this.storeName = storeName;
}
}
结束
这样就可以了，是不是很简单？只需要加入一些注解，文档就生成了，对代码侵入很小，保证了文档与代码的同步，最重要的是效率高啊！_
相关链接
Swagger-UI官网
官方DEMO