SpringBootWeb请求响应

jews
84 阅读4分钟

请求

代码

package com.itheima.controller;

import com.itheima.pojo.entity.User;
import jakarta.servlet.http.HttpServletRequest;
import org.springframework.format.annotation.DateTimeFormat;
import org.springframework.web.bind.annotation.*;

import java.time.LocalDate;
import java.time.LocalDateTime;
import java.util.Arrays;
import java.util.List;

/**
 * @author wuJiaWei
 * @version 1.0
 */
@RestController
public class RequestController {
    /*********************************************************简单参数**********************************************************/
    //原始方式
    @RequestMapping("/simpleParam")
    public String simpleParam(HttpServletRequest request){
        String name = request.getParameter("name");
        String age = request.getParameter("age");
        int ageInt = Integer.parseInt(age);
        return "name:"+name+" age:"+ageInt;
    }
    //SpringBoot方式
    @RequestMapping("/simpleParam2")
    public String simpleParam2(String name,int age){//形参名和请求参数名保持一致
        return "name:"+name+" age:"+age;
    }

    //@RequestParam注解映射
    @RequestMapping("/simpleParam3")
    public String simpleParam3(@RequestParam(name = "username",required = false) String name, int age){//形参名和请求参数名保持一致
        return "name:"+name+" age:"+age;
    }

    /*********************************************************实体参数**********************************************************/
    //实体参数：简单实体对象
    @RequestMapping("/simplePojo")
    public String simplePojo(User user){
        System.out.println(user);
        return "OK";
    }
    //实体参数：复杂实体对象
    @RequestMapping("/complexPojo")
    public String complexPojo(User user){
        System.out.println(user);
        return "OK";
    }

    /*********************************************************数组集合参数**********************************************************/
    //数组参数
    @RequestMapping("/arrayParam")
    public String arrayParam(String[] name){
        for (String s : name) {
            System.out.println(s);
        }
        System.out.println(Arrays.toString(name));
        return "OK";
    }
    //集合参数
    @RequestMapping("/listParam")
    public String listParam(@RequestParam List<String> name){
        System.out.println(name);
        return "OK";
    }

    /*********************************************************日期参数**********************************************************/
    @RequestMapping("/dateParam")
    public LocalDateTime dateParam(@DateTimeFormat(pattern = "yyyy-MM-dd") LocalDateTime updateTime){
        return updateTime;
    }

    /*********************************************************JSON参数**********************************************************/
    @RequestMapping("/jsonParam")
    public String jsonParam(@RequestBody User user){//@RequestBody注解：将JSON数据映射到形参的实体类对象中（JSON中的key和实体类中的属性名保持一致）
        System.out.println(user);
        System.out.println(user.getAddress().getProvince());
        return "OK";
    }

    /*********************************************************路径参数**********************************************************/
    @GetMapping("/pathParam/{id}")
    public String pathParam(@PathVariable("id") int id){
        return "OK";
    }

    @RequestMapping("/path/{id}/{name}")
    public String pathParam2(@PathVariable Integer id, @PathVariable String name){
        System.out.println(id+ " : " +name);
        return "OK";
    }
}

json导入数据

{
	"info": {
		"_postman_id": "a3044d4e-20b2-44d6-919a-e12be04adc5a",
		"name": "黑马Web学习",
		"schema": "https://schema.getpostman.com/json/collection/v2.1.0/collection.json",
		"_exporter_id": "33580123"
	},
	"item": [
		{
			"name": "请求响应学习",
			"item": [
				{
					"name": "简单参数",
					"item": [
						{
							"name": "SpringBoot方式",
							"item": [
								{
									"name": "简单请求=>同名形参",
									"request": {
										"method": "GET",
										"header": [],
										"url": {
											"raw": "{{local}}/simpleParam2?name=Tom&age=10",
											"host": [
												"{{local}}"
											],
											"path": [
												"simpleParam2"
											],
											"query": [
												{
													"key": "name",
													"value": "Tom"
												},
												{
													"key": "age",
													"value": "10"
												}
											]
										}
									},
									"response": []
								},
								{
									"name": "@RequestParam注解映射",
									"request": {
										"method": "GET",
										"header": [],
										"url": {
											"raw": "{{local}}/simpleParam3?username=Tom&age=10",
											"host": [
												"{{local}}"
											],
											"path": [
												"simpleParam3"
											],
											"query": [
												{
													"key": "username",
													"value": "Tom"
												},
												{
													"key": "age",
													"value": "10"
												}
											]
										}
									},
									"response": []
								}
							]
						},
						{
							"name": "原始方式=>HttpServletRequest（请求对象）",
							"request": {
								"method": "GET",
								"header": [],
								"url": {
									"raw": "{{local}}/simpleParam?name=Tom&age=10",
									"host": [
										"{{local}}"
									],
									"path": [
										"simpleParam"
									],
									"query": [
										{
											"key": "name",
											"value": "Tom"
										},
										{
											"key": "age",
											"value": "10"
										}
									]
								}
							},
							"response": []
						}
					]
				},
				{
					"name": "实体参数",
					"item": [
						{
							"name": "简单实体参数",
							"request": {
								"method": "GET",
								"header": [],
								"url": {
									"raw": "{{local}}/simplePojo?name=Tom&age=10",
									"host": [
										"{{local}}"
									],
									"path": [
										"simplePojo"
									],
									"query": [
										{
											"key": "name",
											"value": "Tom"
										},
										{
											"key": "age",
											"value": "10"
										}
									]
								}
							},
							"response": []
						},
						{
							"name": "复杂实体参数",
							"request": {
								"method": "GET",
								"header": [],
								"url": {
									"raw": "{{local}}/complexPojo?name=Tom&age=10&address.province=河北&address.city=石家庄",
									"host": [
										"{{local}}"
									],
									"path": [
										"complexPojo"
									],
									"query": [
										{
											"key": "name",
											"value": "Tom"
										},
										{
											"key": "age",
											"value": "10"
										},
										{
											"key": "address.province",
											"value": "河北"
										},
										{
											"key": "address.city",
											"value": "石家庄"
										}
									]
								}
							},
							"response": []
						}
					]
				},
				{
					"name": "数组集合参数",
					"item": [
						{
							"name": "数组参数",
							"request": {
								"method": "GET",
								"header": [],
								"url": {
									"raw": "{{local}}/arrayParam?name=12&name=36489",
									"host": [
										"{{local}}"
									],
									"path": [
										"arrayParam"
									],
									"query": [
										{
											"key": "name",
											"value": "12"
										},
										{
											"key": "name",
											"value": "36489"
										}
									]
								}
							},
							"response": []
						},
						{
							"name": "集合参数",
							"request": {
								"method": "GET",
								"header": [],
								"url": {
									"raw": "{{local}}/listParam?name=12&name=36489",
									"host": [
										"{{local}}"
									],
									"path": [
										"listParam"
									],
									"query": [
										{
											"key": "name",
											"value": "12"
										},
										{
											"key": "name",
											"value": "36489"
										}
									]
								}
							},
							"response": []
						}
					]
				},
				{
					"name": "日期时间类型",
					"request": {
						"method": "GET",
						"header": [],
						"url": {
							"raw": "{{local}}/dateParam?updateTime=2024-11-12",
							"host": [
								"{{local}}"
							],
							"path": [
								"dateParam"
							],
							"query": [
								{
									"key": "updateTime",
									"value": "2024-11-12"
								}
							]
						}
					},
					"response": []
				},
				{
					"name": "Json参数",
					"request": {
						"method": "POST",
						"header": [],
						"body": {
							"mode": "raw",
							"raw": "{\r\n    \"name\":\"张三\",\r\n    \"age\":29,\r\n    \"address\":{\r\n        \"province\":\"河北省\",\r\n        \"city\":\"石家庄市\"\r\n    }\r\n}",
							"options": {
								"raw": {
									"language": "json"
								}
							}
						},
						"url": {
							"raw": "{{local}}/jsonParam",
							"host": [
								"{{local}}"
							],
							"path": [
								"jsonParam"
							]
						}
					},
					"response": []
				},
				{
					"name": "路径参数",
					"request": {
						"method": "GET",
						"header": [],
						"url": {
							"raw": "{{local}}/path/10185/物流",
							"host": [
								"{{local}}"
							],
							"path": [
								"path",
								"10185",
								"物流"
							]
						}
					},
					"response": []
				}
			]
		}
	],
	"event": [
		{
			"listen": "prerequest",
			"script": {
				"type": "text/javascript",
				"packages": {},
				"exec": [
					""
				]
			}
		},
		{
			"listen": "test",
			"script": {
				"type": "text/javascript",
				"packages": {},
				"exec": [
					""
				]
			}
		}
	],
	"variable": [
		{
			"key": "local",
			"value": "http://localhost:8080/",
			"type": "string"
		}
	]
}

响应

image.png

package com.itheima.controller;

import com.itheima.pojo.entity.Address;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

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

/**
 * @author wuJiaWei
 * @version 1.0
 */
@RestController
public class ResponseController {

    //字符串
    @RequestMapping(value ="hello")
    public String hello(){
        return "hello";
    }
    //对象
    @RequestMapping(value ="getAddr")
    public Address getAddr(){
        Address address = new Address();
        address.setProvince("广东省");
        address.setCity("深圳市");
        return address;
    }
    //集合
    @RequestMapping(value ="listAddr")
    public List<Address> listAddr(){
        List<Address> list = new ArrayList<>();

        Address address = new Address();
        address.setProvince("广东省");
        address.setCity("深圳市");

        Address address2 = new Address();
        address2.setProvince("广东省");
        address2.setCity("广州市");

        list.add(address);
        list.add(address2);
        return list;
    }
}

统一响应

package com.itheima.pojo.entity;

/**
 * 统一响应结果封装类
 */
public class Result {
    private Integer code ;//1 成功 , 0 失败
    private String msg; //提示信息
    private Object data; //数据 data

    public Result() {
    }
    public Result(Integer code, String msg, Object data) {
        this.code = code;
        this.msg = msg;
        this.data = data;
    }
    public Integer getCode() {
        return code;
    }
    public void setCode(Integer code) {
        this.code = code;
    }
    public String getMsg() {
        return msg;
    }
    public void setMsg(String msg) {
        this.msg = msg;
    }
    public Object getData() {
        return data;
    }
    public void setData(Object data) {
        this.data = data;
    }

    public static Result success(Object data){
        return new Result(1, "success", data);
    }
    public static Result success(){
        return new Result(1, "success", null);
    }
    public static Result error(String msg){
        return new Result(0, msg, null);
    }

    @Override
    public String toString() {
        return "Result{" +
                "code=" + code +
                ", msg='" + msg + ''' +
                ", data=" + data +
                '}';
    }
}

package com.itheima.controller;

import com.itheima.pojo.entity.Address;
import com.itheima.pojo.entity.Result;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

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

/**
 * @author wuJiaWei
 * @version 1.0
 */
@RestController
public class ResponseController {

    //字符串
    @RequestMapping(value ="hello")
    public Result hello(){
        return Result.success("hello");
    }
    //对象
    @RequestMapping(value ="getAddr")
    public Result getAddr(){
        Address address = new Address();
        address.setProvince("广东省");
        address.setCity("深圳市");
//        return address;
        return Result.success(address);
    }
    //集合
    @RequestMapping(value ="listAddr")
    public Result listAddr(){
        List<Address> list = new ArrayList<>();

        Address address = new Address();
        address.setProvince("广东省");
        address.setCity("深圳市");

        Address address2 = new Address();
        address2.setProvince("广东省");
        address2.setCity("广州市");

        list.add(address);
        list.add(address2);
        return Result.success(list);
    }
}
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