微信公众号账号测试申请

1.去微信开放平台申请微信公众号账号测试
https://developers.weixin.qq.com/doc/offiaccount/Basic_Information/Requesting_an_API_Test_Account.html

申请

这里需要填写url和token
url我这里写了个接口，微信支持80端口，所以我这里也是80端口

这里的url需要外网访问，我用Natapp内网映射的域名（教程：https://blog.youkuaiyun.com/YXWik/article/details/114526089）
配置好之后就是接口了，我在网上找的一个demo，测试可以使用，给大家贴出来
Controller

/**
 * @author: YXY
 * @date: 2021/3/8 11:52
 * @Version 1.0
 */
@RestController
@RequestMapping("/wx")
public class WxSignatureCheckController {
    @Autowired
    private WxSignatureCheckService wxSignatureCheckService;

    @RequestMapping("/wxSignatureCheck")
    public String wxSignatureCheck(
            @RequestParam(value = "signature") String signature,
            @RequestParam(value = "timestamp") String timestamp,
            @RequestParam(value = "nonce") String nonce,
            @RequestParam(value = "echostr") String echostr
    ){
        return wxSignatureCheckService.wxSignatureCheck(signature, timestamp, nonce, echostr);
    }

}

Service

/**
 * @author: YXY
 * @date: 2021/3/8 11:53
 * @Version 1.0
 */
public interface WxSignatureCheckService {
    String wxSignatureCheck(String signature, String timestamp, String nonce, String echostr);
}

ServiceImpl

/**
 * @author: YXY
 * @date: 2021/3/8 11:53
 * @Version 1.0
 */
@Service
public class WxSignatureCheckServiceImpl implements WxSignatureCheckService {
    //token
    private final String token = "wxtoken";

    public String wxSignatureCheck(String signature, String timestamp, String nonce, String echostr) {
        ArrayList<String> array = new ArrayList<String>();
        array.add(signature);
        array.add(timestamp);
        array.add(nonce);

        //排序
        String sortString = sort(token, timestamp, nonce);
        //加密
        String mytoken = Decript.SHA1(sortString);
        //校验签名
        if (mytoken != null && mytoken != "" && mytoken.equals(signature)) {
            System.out.println("签名校验通过。");
            return echostr; //如果检验成功输出echostr，微信服务器接收到此输出，才会确认检验完成。
        } else {
            System.out.println("签名校验失败。");
            return null;
        }
    }

    /**
     * 排序方法
     * @param token
     * @param timestamp
     * @param nonce
     * @return
     */
    public static String sort(String token, String timestamp, String nonce) {
        String[] strArray = { token, timestamp, nonce };
        Arrays.sort(strArray);

        StringBuilder sbuilder = new StringBuilder();
        for (String str : strArray) {
            sbuilder.append(str);
        }

        return sbuilder.toString();
    }

}

加密

/**
 * @author: YXY
 * @date: 2021/3/8 11:54
 * @Version 1.0
 * 加密的方法
 */
public class Decript {
    public static String SHA1(String decript) {
        try {
            MessageDigest digest = MessageDigest
                    .getInstance("SHA-1");
            digest.update(decript.getBytes());
            byte messageDigest[] = digest.digest();
            // Create Hex String
            StringBuffer hexString = new StringBuffer();
            // 字节数组转换为 十六进制 数
            for (int i = 0; i < messageDigest.length; i++) {
                String shaHex = Integer.toHexString(messageDigest[i] & 0xFF);
                if (shaHex.length() < 2) {
                    hexString.append(0);
                }
                hexString.append(shaHex);
            }
            return hexString.toString();

        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }
        return "";
    }
}

上面代码放到项目中，运行起来，端口给80
然后回到接口配置点击提交

这里要保证serviceImpl中的token 和公众号接口配置的token一致

这样就配置好了