package com.bw.utils;
/**
 * 验证码生成器（4位数）
 */
import java.util.Random;

public class MessageUtil {
    public static String  creatYZM() {
        String a="";
        Random random = new Random();
        
        for (int i = 0; i < 4 ;i++) {
        a+=    random.nextInt(10);
        
        }
        System.out.println(a);
        return a;
        
    }
    

}

    //getYZM
    @RequestMapping("/getYZM/{phone}")
    public Object getYZM(@PathVariable String phone){
        return MessageUtil.creatYZM();
        
        
    }

  function getYZM(){
        
        alert("返回一个验证码")
        var phone=$("#phone").val()
        
        $.post(
                
                "http://localhost:8080/getYZM/"+phone,
                function(obj){
                    
                    alert(obj)
                
                }
                
                )
        
    }