一、填写服务器配置
首先我们需要在微信公众平台上填写服务器配置
重点内容
服务器地址URL(一定要外网能访问的到)
在我们提交配置的时候,微信会发送GET请求到URL上,
并会携带 signature,timestamp,nonce,echostr 四个参数,
我的URL是 http://www.baidu.com/wxpublic/verify_wx_token,
也就是 域名 + 接口 路径,至于怎么验证,我会在下面说到
signature: 微信加密签名,signature结合了我们自己填写的token参数和请求中的timestamp参数、nonce参数
timestamp: 时间戳
nonce: 字符串
echostr: 随机字符串
令牌Token
Token 可由我们自行定义,主要作用是参与生成签名,与微信请求的签名进行比较
消息加解密密钥EncodingAESKey
EncodingAESKey 可由我们自行定义或随机生成,主要作用是参与接收和推送给公众平台消息的加解密
消息加解密方式
此处我选择的是安全模式,大家可以根据自己的具体需求,选择相应的模式
二、代码验证
@RequestMapping("/wxpublic/verify_wx_token")
@Response
public String verifyWXToken(HttpServletRequest request) throws AesException {
String msgSignature = request.getParameter("signature");
String msgTimestamp = request.getParameter("timestamp");
String msgNonce = request.getParameter("nonce");
String echostr = request.getParameter("echostr");
if (WXPublicUtils.verifyUrl(msgSignature, msgTimestamp, msgNonce)) {
return echostr;
}
return null;
}
WXPublicUtils
public class WXPublicUtils {
/**
* 验证Token
* @param msgSignature 签名串,对应URL参数的signature
* @param timeStamp 时间戳,对应URL参数的timestamp
* @param nonce 随机串,对应URL参数的nonce
*
* @return 是否为安全签名
* @throws AesException 执行失败,请查看该异常的错误码和具体的错误信息
*/
public static boolean verifyUrl(String msgSignature, String timeStamp, String nonce)
throws AesException {
// 这里的 WXPublicConstants.TOKEN 填写你自己设置的Token就可以了
String signature = SHA1.getSHA1(WXPublicConstants.TOKEN, timeStamp, nonce);
if (!signature.equals(msgSignature)) {
throw new AesException(AesException.ValidateSignatureError);
}
return true;
}
}
AesException
@SuppressWarnings("serial")
public class AesException extends Exception {
public final static int OK = 0;
public final static int ValidateSignatureError = -40001;
public final static int ParseXmlError = -40002;
public final static int ComputeSignatureError = -40003;
public final static int IllegalAesKey = -40004;
public final static int ValidateAppidError = -40005;
public final static int EncryptAESError = -40006;
public final static int DecryptAESError = -40007;
public final static int IllegalBuffer = -40008;
public final static int EncodeBase64Error = -40009;
public final static int DecodeBase64Error = -40010;
public final static int GenReturnXmlError = -40011;
private int code;
private static String getMessage(int code) {
switch (code) {
case ValidateSignatureError:
return "签名验证错误";
case ParseXmlError:
return "xml解析失败";
case ComputeSignatureError:
return "sha加密生成签名失败";
case IllegalAesKey:
return "SymmetricKey非法";
case ValidateAppidError:
return "appid校验失败";
case EncryptAESError:
return "aes加密失败";
case DecryptAESError:
return "aes解密失败";
case IllegalBuffer:
return "解密后得到的buffer非法";
case EncodeBase64Error:
return "base64加密错误";
case DecodeBase64Error:
return "base64解密错误";
case GenReturnXmlError:
return "xml生成失败";
default:
return null;
}
}
public int getCode() {
return code;
}
public AesException(int code) {
super(getMessage(code));
this.code = code;
}
}
SHA1
public class SHA1 {
/**
* 用SHA1算法验证Token
*
* @param token 票据
* @param timestamp 时间戳
* @param nonce 随机字符串
* @return 安全签名
* @throws AesException
*/
public static String getSHA1(String token, String timestamp, String nonce) throws AesException {
try {
String[] array = new String[]{token, timestamp, nonce};
StringBuffer sb = new StringBuffer();
// 字符串排序
Arrays.sort(array);
for (int i = 0; i < 3; i++) {
sb.append(array[i]);
}
String str = sb.toString();
// SHA1签名生成
MessageDigest md = MessageDigest.getInstance("SHA-1");
md.update(str.getBytes());
byte[] digest = md.digest();
StringBuffer hexstr = new StringBuffer();
String shaHex = "";
for (int i = 0; i < digest.length; i++) {
shaHex = Integer.toHexString(digest[i] & 0xFF);
if (shaHex.length() < 2) {
hexstr.append(0);
}
hexstr.append(shaHex);
}
return hexstr.toString();
} catch (Exception e) {
e.printStackTrace();
throw new AesException(AesException.ComputeSignatureError);
}
}
}
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作者:Gene Xu
来源:CSDN
原文:https://blog.csdn.net/goodbye_youth/article/details/80590831
版权声明:本文为博主原创文章,转载请附上博文链接!