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微信平台接口验证.java
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微信平台接口验证.java
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package org.hit.qa.util;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Arrays;
/**
* 请求校验工具类
*
* @author liufeng
* @date 2013-09-01
*/
public class SignUtil {
// 与开发模式接口配置信息中的Token保持一致
private static String token = "weixinCourse2";
/**
* 校验签名
*
* @param signature 微信加密签名
* @param timestamp 时间戳
* @param nonce 随机数
* @return
*/
public static boolean checkSignature(String signature, String timestamp, String nonce) {
// 对token、timestamp和nonce按字典排序
String[] paramArr = new String[] { token, timestamp, nonce };
Arrays.sort(paramArr);
// 将排序后的结果拼接成一个字符串
String content = paramArr[0].concat(paramArr[1]).concat(paramArr[2]);
String ciphertext = null;
try {
MessageDigest md = MessageDigest.getInstance("SHA-1");
// 对接后的字符串进行sha1加密
byte[] digest = md.digest(content.toString().getBytes());
ciphertext = byteToStr(digest);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
// 将sha1加密后的字符串与signature进行对比
return ciphertext != null ? ciphertext.equals(signature.toUpperCase()) : false;
}
/**
* 将字节数组转换为十六进制字符串
*
* @param byteArray
* @return
*/
private static String byteToStr(byte[] byteArray) {
String strDigest = "";
for (int i = 0; i < byteArray.length; i++) {
strDigest += byteToHexStr(byteArray[i]);
}
return strDigest;
}
/**
* 将字节转换为十六进制字符串
*
* @param mByte
* @return
*/
private static String byteToHexStr(byte mByte) {
char[] Digit = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
char[] tempArr = new char[2];
tempArr[0] = Digit[(mByte >>> 4) & 0X0F];
tempArr[1] = Digit[mByte & 0X0F];
String s = new String(tempArr);
return s;
}
}