1、参数的接受

1、简单参数的接受

package cn.ssdt.tim;

import javax.servlet.http.HttpServletRequest;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;



@RestController
public class RequestController {
    
    
    
//    方式一  原始的请求参数
    
    @RequestMapping("/simpleParam")
    public String simpleParam(HttpServletRequest request) {
        String name = request.getParameter("name");
        String ageStr = request.getParameter("age");
        
        int age = Integer.parseInt(ageStr);
        
        System.out.println(name);
        System.out.print(age);
        return "ok";
    }
    
    
//    方式二  springboot 请求参数
    
    @RequestMapping("/simpleParam2")
    public String simpleParam2(String name,Integer age) {

        
        System.out.println(name + ":"+age);
        return "ok";
    }
    
//    post 请求
    @RequestMapping("/simpleParam3")
    public String postSimpleParam(String name,Integer age) {

        
        System.out.println(name + ":"+age);
        return "ok";
    }
    
    // @RequestParam 中的required属性默认true  代表该参数必须传递。若需要可选，可设置为false
    @RequestMapping("/simpleParam4")
    public String postSimpleParam2(@RequestParam(name="name",required=false)String username,Integer age) {

        
        System.out.println(username + ":"+age);
        return "ok";
    }


}

 2、实体请求参数

package cn.ssdt.tim.controller;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import cn.ssdt.tim.pojo.User;


@RestController
public class RequestController2 {
    
    
    @RequestMapping("/simplePojo")
    public String simplePojo(User user) {

        
        System.out.println(user);
        return "ok";
    }

}

package cn.ssdt.tim.pojo;

public class User {
    private String name;
    private Integer age;
    private Address address;
    
    public Address getAddress() {
        return address;
    }
    public void setAddress(Address address) {
        this.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;
    }
    @Override
    public String toString() {
        return "User [name=" + name + ", age=" + age + ", address=" + address + "]";
    }
    
    
    
}

package cn.ssdt.tim.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;
    }
    @Override
    public String toString() {
        return "Address [province=" + province + ", city=" + city + "]";
    }
    
}