微信验证服务器有效性

后台代码

控制器

package com.example.demo.controller;
import com.example.demo.util.Sha1Util;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import java.util.Arrays;
@RestController
public class WechatController {
    /**
     * @return 微信请求接收
     */
    @GetMapping(value = "/weixin", produces = "text/plain;charset=UTF-8")
    public ResponseEntity weixin(@RequestParam(name = "signature") String signature,
                                 @RequestParam(name = "timestamp") String timestamp,
                                 @RequestParam(name = "nonce") String nonce,
                                 @RequestParam(name = "echostr") String echostr) {
        String auths[] = {token(自己填的 token), timestamp, nonce};
        Arrays.sort(auths);
        if (signature.equals(Sha1Util.getSha1(auths[0] + auths[1] + auths[2]))) {
            if (null != echostr) {
                return ResponseEntity.ok(this.auth(echostr));
            }
        }
        return ResponseEntity.ok().build();
    }
    /**
     * @param echostr
     * @return 认证
     */
    private String auth(String echostr) {
        return echostr;
    }
    @GetMapping(value = "/test")
    public ResponseEntity test() {
        return ResponseEntity.ok("测试成功！");
    }
}

Sha1 加密

package com.example.demo.util;
import java.security.MessageDigest;
public class Sha1Util {
    public static String getSha1(String str){
        if (null == str || 0 == str.length()){
            return null;
        }
        char[] hexDigits = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
                'a', 'b', 'c', 'd', 'e', 'f'};
        try {
            MessageDigest mdTemp = MessageDigest.getInstance("SHA1");
            mdTemp.update(str.getBytes("UTF-8"));
            byte[] md = mdTemp.digest();
            int j = md.length;
            char[] buf = new char[j * 2];
            int k = 0;
            for (int i = 0; i < j; i++) {
                byte byte0 = md[i];
                buf[k++] = hexDigits[byte0 >>> 4 & 0xf];
                buf[k++] = hexDigits[byte0 & 0xf];
            }
            return new String(buf);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
}

微信后台配置

后台的 token 就是控制器中自己配置的 token
url 就填 http://你的链接/weixin

提交就验证成功了