java WeChat public account server configuration

1. WeChat public account configuration

2.java side verification

/**
 * WeChat official account verification
 * @return
 */
 @RequestMapping ( value = "/wechatAuth" )
 @ResponseBody
 public String wechatAuth (String signature , String timestamp , String nonce , String echostr) { 
   //Get the custom token configured by the WeChat server
   String token = PropertiesUtil2.getPropertyFile("/wechat-context.properties").getProperty("wechatToken");
   String sig = null;
   try {
      sig = SHA1.getSHA1(token,timestamp,nonce,"");
   } catch (AesException e) {
      e.printStackTrace();
   }
   logger.info(sig+","+signature+","+timestamp+","+nonce+","+echostr);
   if(signature.equals(sig)){
      return echostr;
   }else{
      return "error";
   }
}

package aes ;
 import java.security.MessageDigest ;
 import java.util.Arrays ;
 /**
 * SHA1 class
 *
 * Calculate the message signature interface of the public platform.
 */
 public class SHA1 {



	
   public final static int ComputeSignatureError = -40003;


   /**
     * Generate secure signature with SHA1 algorithm
     * @param token ticket
     * @param timestamp timestamp
     * @param nonce random string
     * @param encrypt ciphertext
     * @return secure signature
     * @throws AesException 
 *     /
 public static String getSHA1 ( String token , String timestamp , String nonce , String encrypt) throws AesException{
       try {   
         String[] array = new String[] { token, timestamp, nonce, encrypt };
         StringBuffer sb = new StringBuffer();
// 字符串排序
Arrays.sort(array);
         for (int i = 0; i < 4; 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(ComputeSignatureError);
      }
   }
}

Note: If it is troublesome, return the encrypt field directly. . .