token验证失败，一模一样的东西
为什么代码一模一样还是不能通过开发者模式验证，显示：TOKEN验证失败！
几天都没看出来有什么问题，求解答，
//WeixinServlet.java文件
package 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 toolsClass.CheckUtil;
public class WeixinServlet extends HttpServlet {
/**
* Constructor of the object.
*/
public WeixinServlet() {
super();
}
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
public void doDelete(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
// Put your code here
}
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String signature = request.getParameter("signature");
String timestamp = request.getParameter("timestamp");
String nonce = request.getParameter("nonce");
String echostr = request.getParameter("echostr");
//返回随机字符串：echostr
PrintWriter out = response.getWriter();
if(CheckUtil.checkSignature(signature,timestamp,nonce)){
//
System.out.println("微信服务器身份验证通过");
out.print(echostr);
}
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println(" <BODY>");
out.print(" This is ");
out.print(this.getClass());
out.println(", using the POST method");
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}
public void doPut(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
// Put your code here
}
public void init() throws ServletException {
// Put your code here
}
}
//CheckUtil.java文件
package toolsClass;
import java.security.MessageDigest;
import java.util.Arrays;
public class CheckUtil {
private static final String token = "Walter";
public static boolean checkSignature(String signature,String timestamp,String nonce){
String []arr = new String[]{token,timestamp,nonce};
//排序
Arrays.sort(arr);
//生成字符串
StringBuffer content = new StringBuffer();
for (int i=0;i<arr.length;i++ ){
content.append(arr[i]); //append方法用来累积字符串的,
}
//sha1加密
String temp = getSha1(content.toString());
return temp.equals(signature);
}
//sha1加密算法
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("SHA2");
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;
}
}
public static void main(String []argss){
System.out.println("===========SHA2:是SHA1算法。");
}
}
