restFull api接口

package com.seecen.sc1904springboot.controller;

import com.seecen.sc1904springboot.pojo.User;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

import java.util.ArrayList;
import java.util.List;

/**
 * get /users/999  获取id为999的信息
 * get /users  获取所有的用户信息
 * post /users 新增一条记录
 * put /users 修改信息
 * patch /users 增量的修改
 * delete /users/999 删除id为999的信息
 */
@Controller
@RequestMapping("users")
public class UserController {

    //get users/9999
    @RequestMapping(value = "/{id}", method = RequestMethod.GET)
    @ResponseBody
    public User getUserById(@PathVariable("id") Integer id) {
        //持久化操作：根据id获取指定记录并返回
        User user = new User();
        user.setUserId(id);
        user.setUserName("张三");
        return user;
    }

    //get /users  获取所有的用户信息
    @RequestMapping(value = "",method = RequestMethod.GET)
    @ResponseBody
    public List<User> getAllUsers(){
        List<User> list = new ArrayList<>();
        User user = new User();
        user.setUserId(1);
        user.setUserName("张三");
        list.add(user);
        return list;
    }

//    post /users 新增一条记录
    @RequestMapping(value = "",method = RequestMethod.POST)
    @ResponseBody
    public User addNewUser(User user){
        //新增一条记录并获取user对象
        return user;
    }

//    put /users 修改信息
    @RequestMapping(value = "",method = RequestMethod.PUT)
    @ResponseBody
    public User updateUser(User user){
        return user;
    }

    //patch /users 增量的改
    @RequestMapping(value = "",method = RequestMethod.PATCH)
    @ResponseBody
    public User patchUser(User user){
        return user;
    }

    //delete /users/999
    @RequestMapping(value = "/{id}",method = RequestMethod.DELETE)
    @ResponseBody
    public User del(@PathVariable("id") Integer id){
        return new User();
    }
}

  <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.8.0</version>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.8.0</version>
        </dependency>

package com.seecen.sc1904springboot.config;

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 就个类是一个spring框架的配置文件
//spring框架的配置文件主要体现的是创建什么bean对象
@Configuration//spring配置文件，xml, java类来体现配置信息
@EnableSwagger2
public class Swagger2 {
    /**
     * 创建API应用
     * apiInfo() 增加API相关信息
     * 通过select()函数返回一个ApiSelectorBuilder实例,用来控制哪些接口暴露给Swagger来展现，
     * 本例采用指定扫描的包路径来定义指定要建立API的目录。
     *
     * @return
     */
    @Bean
    public Docket createRestApi() {
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors
                        .basePackage("com.seecen.sc1904springboot.controller"))
                .paths(PathSelectors.any())
                .build();
    }

    /**
     * 创建该API的基本信息（这些基本信息会展现在文档页面中）
     * 访问地址：http://项目实际地址/swagger-ui.html
     * @return
     */
    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("Spring Boot中使用Swagger2构建RESTful APIs")
                .description("Spring Boot中使用Swagger2构建RESTful APIs")
                .termsOfServiceUrl("http://www.geek5.cn")
                .contact(new Contact("calcyu","http://geek5.cn","hi@geek5.cn"))
                .version("1.0")
                .build();
    }
}

package com.seecen.sc1904springboot.controller;


import com.seecen.sc1904springboot.pojo.RESTfullResult;
import com.seecen.sc1904springboot.pojo.User;

import com.seecen.sc1904springboot.service.UserService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiImplicitParam;
import io.swagger.annotations.ApiOperation;
import io.swagger.models.auth.In;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;



@RestController    //  返回的所有都是json的
@RequestMapping("/user")
@Api("用户的增删改查功能")
public class UserController2 {

    @Autowired
    private UserService userService;

//    emp/insert获取用户信息     @PathVariable("empno")Integer empno

        @GetMapping("/{id}")
        @ApiOperation("根据id主键返回用户信息")
        @ApiImplicitParam(name = "id",value = "用户编号",required = true,dataType = "json")
        public RESTfullResult<User> getAllUsers(@PathVariable("id")Integer id) {
            User list = userService.selectByPrimaryKey(id);
            return RESTfullResult.success(list);
        }

}