1.swagger配置

/**
 * Swagger 配置文件
 */
@Configuration
public class SwaggerConfig {
    @Bean
    public Docket createRestApi() {
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors.basePackage("com.swagger.two"))
                .paths(PathSelectors.any())
                .build();
    }

    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("SpringBoot利用Swagger构建API文档")
                .description("创建人：wjg")
                .termsOfServiceUrl("")
                .version("version 2.0")
                .build();
    }
}

2.请求路径

 http://localhost:8006/swagger2/swagger-ui.html

3.Swagger2 注解整理

 
 Api：修饰整个类，描述Controller的作用
 ApiOperation：描述一个类的一个方法，或者说一个接口
 ApiParam：单个参数描述
 ApiModel：用对象来接收参数
 ApiProperty：用对象接收参数时，描述对象的一个字段
 ApiResponse：HTTP响应其中1个描述
 ApiResponses：HTTP响应整体描述
 ApiIgnore：使用该注解忽略这个API
 ApiError ：发生错误返回的信息
 ApiImplicitParam：一个请求参数
 ApiImplicitParams：多个请求参数 

 4.代码示例

@RestController
@Api(tags = "用户控制层")
public class UserController {
    // 创建线程安全的Map
    static Map<Integer, User> users = Collections.synchronizedMap(new HashMap<Integer, User>());

    /**
     * 添加用户
     */
    @ApiOperation(value="添加用户", notes="创建新用户")
    @ApiImplicitParam(name = "user", value = "用户详细实体user", required = true, dataType = "User")
    @RequestMapping(value = "/addUser", method = RequestMethod.POST)
    public ResponseEntity<JsonResult> addUser (@RequestBody User user){
        JsonResult result = new JsonResult();
        try {
            users.put(user.getId(), user);
            result.setResult(user.getId());
            result.setStatus("ok");
        } catch (Exception e) {
            result.setResult("服务异常");
            result.setStatus("500");
            e.printStackTrace();
        }
        return ResponseEntity.ok(result);
    }

    /**
     * 根据ID查询用户
     */
    @ApiOperation(value="用户查询", notes="根据ID查询用户")
    @ApiImplicitParam(name = "id", value = "用户ID", required = true, dataType = "Integer", paramType = "path")
    @RequestMapping(value = "/getUserById/{id}", method = RequestMethod.GET)
    public ResponseEntity<JsonResult> getUserById (@PathVariable(value = "id") Integer id){
        JsonResult result = new JsonResult();
        try {
            User user = users.get(id);
            result.setResult(user);
            result.setStatus("200");
        } catch (Exception e) {
            result.setResult("服务异常");
            result.setStatus("500");
            e.printStackTrace();
        }
        return ResponseEntity.ok(result);
    }

    /**
     * 查询用户列表
     */
    @ApiOperation(value="用户列表", notes="查询用户列表")
    @RequestMapping(value = "/getUserList", method = RequestMethod.GET)
    public ResponseEntity<JsonResult> getUserList (){
        JsonResult result = new JsonResult();
        try {
            List<User> userList = new ArrayList<>(users.values());
            result.setResult(userList);
            result.setStatus("200");
        } catch (Exception e) {
            result.setResult("服务异常");
            result.setStatus("500");
            e.printStackTrace();
        }
        return ResponseEntity.ok(result);
    }

    /**
     * 根据ID修改用户信息
     */
    @ApiOperation(value="更新用户", notes="根据Id更新用户信息")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "id", value = "用户ID", required = true, dataType = "Long",paramType = "path"),
            @ApiImplicitParam(name = "user", value = "用户对象user", required = true, dataType = "User")
    })
    @RequestMapping(value = "/updateById/{id}", method = RequestMethod.PUT)
    public ResponseEntity<JsonResult> updateById (@PathVariable("id") Integer id, @RequestBody User user){
        JsonResult result = new JsonResult();
        try {
            User user1 = users.get(id);
            user1.setUsername(user.getUsername());
            user1.setAge(user.getAge());
            users.put(id, user1);
            result.setResult(user1);
            result.setStatus("ok");
        } catch (Exception e) {
            result.setResult("服务异常");
            result.setStatus("500");
            e.printStackTrace();
        }
        return ResponseEntity.ok(result);
    }

    /**
     * 根据id删除用户
     */
    @ApiOperation(value="删除用户", notes="根据id删除指定用户")
    @ApiImplicitParam(name = "id", value = "用户ID", required = true, dataType = "Long", paramType = "path")
    @RequestMapping(value = "/deleteById/{id}", method = RequestMethod.DELETE)
    public ResponseEntity<JsonResult> deleteById (@PathVariable(value = "id") Integer id){
        JsonResult result = new JsonResult();
        try {
            users.remove(id);
            result.setResult(id);
            result.setStatus("ok");
        } catch (Exception e) {
            result.setResult("服务异常");
            result.setStatus("500");
            e.printStackTrace();
        }
        return ResponseEntity.ok(result);
    }
}