从0开始一个微信公众号的自动回复

private function checkSignature()
{
    $signature = $_GET["signature"];
    $timestamp = $_GET["timestamp"];
    $nonce = $_GET["nonce"];
  
    $token = TOKEN;
    $tmpArr = array($token, $timestamp, $nonce);
    sort($tmpArr, SORT_STRING);
    $tmpStr = implode( $tmpArr );
    $tmpStr = sha1( $tmpStr );
    
    if( $tmpStr == $signature ){
        return true;
    }else{
        return false;
    }
}

package com.huahua.controller;

import com.huahua.service.MessageServiceImpl;
import com.huahua.util.SHAUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.util.Arrays;

@RestController
public class WxController {

    private final String token = "这里填自定义的token,需要对应微信配置的";
    @Autowired
    MessageServiceImpl messageService;// 这个是自动回复的service.本章节可以忽略




    @GetMapping("/wx")
    // 这个是本章节的重点.验证请求是否来自微信,防止别人手动请求获取结果
    public String token(@RequestParam("timestamp") String timestamp, @RequestParam("nonce") String nonce, @RequestParam("signature") String signature,@RequestParam("echostr") String echostr) {
        // 创建string数组接收,排序的方法很多
        String[] strings = {timestamp, nonce, token};
        // java自己提供的排序
        Arrays.sort(strings);
        String sha1 = SHAUtils.SHA1(strings[0] + strings[1] + strings[2]);
        return signature.equals(sha1) ? echostr : "验证失败";
    }

    /**
     * @return
     */
    @PostMapping("/wx")
    public String autoReply(HttpServletRequest request) throws Exception {
        System.out.println("autoReply执行");
        // 自动回复,本章节可以忽略
        return messageService.newMessageRequest(request);
    }



    @RequestMapping("/")
    public String index() {
    // 测试服务器连通,可以忽略
        return "爱花花";
    }

}