为什么System.out.println(temp); System.out.println(signature);两个一直不相等
package com.imooc.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.imooc.utils.CheckUtils;
/**
* @author 作者 zwl:
* @version 创建时间：2015年8月10日 上午9:17:39
* @param
AppID(应用ID)wx5c0d8ccaff56320b
AppSecret(应用密钥)7dfe7278da922bce0c357510ddb99169
*/
public class WeichatServlet extends HttpServlet{
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
//System.out.println("正在接通");
String signature = req.getParameter("signature");
String timestamp = req.getParameter("timestamp");
String nonce = req.getParameter("nonce");
String echostr = req.getParameter("echostr");
// System.out.println(signature);
// System.out.println(timestamp);
// System.out.println(nonce);
// System.out.println(echostr);
PrintWriter out = resp.getWriter();
if (CheckUtils.checkSignature(signature, timestamp, nonce)) {
out.print(echostr);
}else {
out.print("error");
}
}
}
和
package com.imooc.utils;
import java.security.MessageDigest;
import java.util.Arrays;
/**
* @author 作者 zwl:
* @version 创建时间：2015年8月10日 上午9:17:39
* @param
*/
public class CheckUtils {
private static final String token ="imooc";
public static boolean checkSignature(String signature,String timestamp,String nonce){
String[] arr=new String[]{token,signature,timestamp,nonce};
//排序
Arrays.sort(arr);
//生成字符串
StringBuffer content = new StringBuffer();
for (int i = 0; i < arr.length; i++) {
//System.out.println(arr[i]);
content.append(arr[i]);
}
//sha1加密
String temp = getSha1(content.toString());
System.out.println(temp);
System.out.println(signature);
return temp.equals(signature);
}
public static String getSha1(String str){
if(str == null || str.length() == 0){
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) {
return null;
}
}
}
为什么一直两个都不相等啊 哎
