pom.xml增加依赖包

  <dependency>
        <groupId>io.springfox</groupId>
        <artifactId>springfox-swagger2</artifactId>
        <version>2.2.2</version>
    </dependency>
    <dependency>
        <groupId>io.springfox</groupId>
        <artifactId>springfox-swagger-ui</artifactId>
        <version>2.2.2</version>
    </dependency>

编写swapper2配置类

package com.zyank;

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;

@Configuration
@EnableSwagger2
public class Swagger2 {

    @Bean
    public Docket createRestApi() {

        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors.basePackage("com.zyank.web"))
                .paths(PathSelectors.any())
                .build();
    }

    private ApiInfo apiInfo(){

        return new ApiInfoBuilder()
                .title("Spring Boot中试用Swagger2构建的RESTful APIs")
                .description("更多Spring Boot相关文章请关注：http://blog.didispace.com/")
                .termsOfServiceUrl("http://blog.didispace.com/")
                .contact("leo")
                .version("1.0")
                .build();

    }

}

Controller内使用

package com.zyank.web;

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.zyank.domain.User;

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

@RestController
@RequestMapping(value="/users")
public class UserContrller {

    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, paramType="path", 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, paramType="path", 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";
        }


}

如果上诉代码没有写paramType = “path” 会提示类型转换String convert to Long错误。

文章参考：http://blog.csdn.net/hpym365/article/details/56675686