🌺工具—postman

postman是一款功能强大的网页调试与发送网页HTTP请求的Chrome插件

⭐作用

常用于进行接口测试

🏳️‍🌈安装

我把安装包传到网盘里面了，点击exe文件就可以下载，需要的同学请自取

链接

🎈创建工作空间

点击CTRL+S进行保存
这样子即使我们关了，也能够访问

🎄简单参数

⭐原始方式

在原始的web程序中，获取请求参数，需要通过HttpServletRequest对象手动获取

🎈我们建立springboot项目，输入下面的代码

import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;@RestController
public class RequestController  {//原始方法//设置注解，指定请求路径@RequestMapping("/simpleParam")public String simpleParam(HttpServletRequest request){//获取请求参数String name=request.getParameter("name");String ageStr=request.getParameter("age");int age=Integer.parseInt(ageStr);System.out.println(name+":"+age);return "OK";}
}

🎈运行

这时候我们打开postman（不要终止项目运行）
输入http://localhost:8080/simpleParam?name=Tom&age=10
然后点击send

⭐SpringBoot方式

只需要保证参数名和变量名相同，定义形参即可接收参数

import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;@RestController
public class RequestController  {//原始方法//设置注解，指定请求路径@RequestMapping("/simpleParam")public String simpleParam(String name,Integer age){//SpringBoot方式System.out.println(name+":"+age);return "OK";}
}

🎄实体参数

🏳️‍🌈简单实体参数

请求参数名与形参对象属性名相同，定义POJO接收即可

⭐代码实现

创建类User.java

public class User {private String name;private Integer age;public String getName() {return name;}public void setName(String name) {this.name = name;}public Integer getAge() {return age;}public void setAge(Integer age) {this.age = age;}@Overridepublic String toString() {return "User{" +"name='" + name + '\'' +", age=" + age +'}';}
}

创建类RequestController.Java

import com.example.springbootwebreqresp.pojo.User;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;@RestController
public class RequestController  {//实体参数//设置注解，指定请求路径@RequestMapping("/simplePojo")public String simplePojo(User user){System.out.println(user);return "OK";}
}

🏳️‍🌈复杂实体参数

请求参数名与形参对象属性名相同，安装对象层次结构关系即可接收嵌套POJO属性参数

⭐代码实现

创建类User.java

package com.example.springbootwebreqresp.pojo;public class User {private String name;private Integer age;private Address address;public String getName() {return name;}public void setName(String name) {this.name = name;}public Integer getAge() {return age;}public void setAge(Integer age) {this.age = age;}public Address getAddress() {return address;}public void setAddress(Address address) {this.address = address;}@Overridepublic String toString() {return "User{" +"name='" + name + '\'' +", age=" + age +", address=" + address +'}';}
}

创建类Address.java

package com.example.springbootwebreqresp.pojo;public class Address {private String province;private String city;public String getProvince() {return province;}public void setProvince(String province) {this.province = province;}public String getCity() {return city;}public void setCity(String city) {this.city = city;}@Overridepublic String toString() {return "Address{" +"province='" + province + '\'' +", city='" + city + '\'' +'}';}
}

创建类RequestController.Java

package com.example.springbootwebreqresp.controller;import com.example.springbootwebreqresp.pojo.User;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;@RequestMapping("/complexPojo")public String complexPojo(User user){System.out.println(user);return "OK";}
}

🎄数组集合参数

⭐使用数组来接收

请求参数名与形参数组名相同且请求参数为多个，定义数组类型形参即可接收参数

package com.example.springbootwebreqresp.controller;import com.example.springbootwebreqresp.pojo.User;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;import java.lang.reflect.Array;
import java.util.Arrays;@RestController
public class RequestController  {@RequestMapping("/arrayParam")public String arrayParam(String[] hobby){System.out.println(Arrays.toString(hobby));return "OK";}
}

⭐使用集合来接收

请求参数名与形参集合名称相同且请求参数为多个，@RequestParam绑定参数关系

package com.example.springbootwebreqresp.controller;import com.example.springbootwebreqresp.pojo.User;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;import java.lang.reflect.Array;
import java.util.Arrays;
import java.util.List;@RestController
public class RequestController  {@RequestMapping("/arrayParam")public String arrayParam(@RequestParam List<String>hobby){System.out.println(hobby);return "OK";}
}

🎆小结

🎄日期参数

使用@DateTimeFormat注解完成日期参数格式转换

🎄路径参数

🥰总结