Spring MVC中使用 Swagger2 构建Restful API

0.Spring MVC配置文件中的配置

<!-- 设置使用注解的类所在的jar包，只加载controller类 -->
<span style="white-space:pre">	</span><context:component-scan base-package="com.jay.plat.config.controller" />

<!-- 使用 Swagger Restful API文档时，添加此注解 -->
<mvc:default-servlet-handler />

1.maven依赖

<!-- 构建Restful API -->

<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger2</artifactId>
<version>2.4.0</version>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger-ui</artifactId>
<version>2.4.0</version>
</dependency>

2.Swagger配置文件

package com.jay.plat.config.util;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

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;
/*
* Restful API 访问路径:
* http://IP:port/{context-path}/swagger-ui.html * eg:http://localhost:8080/jd-config-web/swagger-ui.html
*/
@EnableWebMvc
@EnableSwagger2
@ComponentScan(basePackages = {"com.<span style="font-family:Arial, Helvetica, sans-serif;">jay.</span>plat.config.controller"})
@Configuration
public class RestApiConfig extends WebMvcConfigurationSupport{

@Bean
public Docket createRestApi() {
return new Docket(DocumentationType.SWAGGER_2)
.apiInfo(apiInfo())
.select()
.apis(RequestHandlerSelectors.basePackage("com.jay.plat.config.controller"))
.paths(PathSelectors.any())
.build();
}

private ApiInfo apiInfo() {
return new ApiInfoBuilder()
.title("Spring 中使用Swagger2构建RESTful APIs")
.termsOfServiceUrl("http://blog.csdn.net/he90227")
.contact("逍遥飞鹤")
.version("1.1")
.build();
}
}

@Configuration 配置注解，自动在本类上下文加载一些环境变量信息
@EnableWebMvc
@EnableSwagger2 使swagger2生效
@ComponentScan("com.myapp.packages") 需要扫描的包路径

3.Controller中使用注解添加API文档

package com.jay.spring.boot.demo10.swagger2.controller;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.springframework.web.bind.annotation.PathVariable;
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.RestController;

import com.jay.spring.boot.demo10.swagger2.bean.User;

import io.swagger.annotations.ApiImplicitParam;
import io.swagger.annotations.ApiImplicitParams;
import io.swagger.annotations.ApiOperation;

@RestController
@RequestMapping(value = "/users") // 通过这里配置使下面的映射都在/users下，可去除
public class UserController {

static Map<Long, User> users = Collections.synchronizedMap(new HashMap<Long, User>());

@ApiOperation(value = "获取用户列表", notes = "")
@RequestMapping(value = { "" }, method = RequestMethod.GET)
public List<User> getUserList() {
List<User> r = new ArrayList<User>(users.values());
return r;
}

@ApiOperation(value = "创建用户", notes = "根据User对象创建用户")
@ApiImplicitParam(name = "user", value = "用户详细实体user", required = true, dataType = "User")
@RequestMapping(value = "", method = RequestMethod.POST)
public String postUser(@RequestBody User user) {
users.put(user.getId(), user);
return "success";
}

@ApiOperation(value = "获取用户详细信息", notes = "根据url的id来获取用户详细信息")
@ApiImplicitParam(name = "id", value = "用户ID", required = true, dataType = "Long")
@RequestMapping(value = "/{id}", method = RequestMethod.GET)
public User getUser(@PathVariable Long id) {
return users.get(id);
}

@ApiOperation(value = "更新用户详细信息", notes = "根据url的id来指定更新对象，并根据传过来的user信息来更新用户详细信息")
@ApiImplicitParams({ @ApiImplicitParam(name = "id", value = "用户ID", required = true, dataType = "Long"),
@ApiImplicitParam(name = "user", value = "用户详细实体user", required = true, dataType = "User") })
@RequestMapping(value = "/{id}", method = RequestMethod.PUT)
public String putUser(@PathVariable Long id, @RequestBody User user) {
User u = users.get(id);
u.setName(user.getName());
u.setAge(user.getAge());
users.put(id, u);
return "success";
}

@ApiOperation(value = "删除用户", notes = "根据url的id来指定删除对象")
@ApiImplicitParam(name = "id", value = "用户ID", required = true, dataType = "Long")
@RequestMapping(value = "/{id}", method = RequestMethod.DELETE)
public String deleteUser(@PathVariable Long id) {
users.remove(id);
return "success";
}

}

4.效果展示

Restful API 访问路径:
* http://IP:port/{context-path}/swagger-ui.html * eg:http://localhost:8080/jd-config-web/swagger-ui.html