首先填写可外网访问的url 是如下方法
@RequestMapping(value = "coreJoin", method = RequestMethod.GET)
public void coreJoinGet(HttpServletRequest request,
HttpServletResponse response) throws IOException {
// 微信加密签名
String msg_signature = request.getParameter("signature");
// 时间戳
String timestamp = request.getParameter("timestamp");
// 随机数
String nonce = request.getParameter("nonce");
// 随机字符串
String echostr = request.getParameter("echostr");
System.out.println(msg_signature);
System.out.println(timestamp);
System.out.println(nonce);
System.out.println(echostr);
System.out.println("request=" + request.getRequestURL());
PrintWriter out = response.getWriter();
// 通过检验signature对请求进行校验，若校验成功则原样返回echostr，表示接入成功，否则接入失败
if (SignUtil.checkSignature(msg_signature, timestamp, nonce)) {
out.print(echostr);
System.out.println(echostr);
}else {
System.out.println("不是微信服务器发来的请求,请小心!");
}
out.flush();
out.close();
}
public class SignUtil {
// 与接口配置信息中的Token要一致
private static String token = "shdmt";
/**
* 验证签名
*
* @param signature
* @param timestamp
* @param nonce
* @return
*/
public static boolean checkSignature(String signature, String timestamp,
String nonce) {
String[] arr = new String[] { token, timestamp, nonce };
// 将token、timestamp、nonce三个参数进行字典序排序
Arrays.sort(arr);
StringBuilder content = new StringBuilder();
for (int i = 0; i < arr.length; i++) {
content.append(arr[i]);
}
MessageDigest md = null;
String tmpStr = null;
try {
md = MessageDigest.getInstance("SHA-1");
// 将三个参数字符串拼接成一个字符串进行sha1加密
byte[] digest = md.digest(content.toString().getBytes());
tmpStr = byteToStr(digest);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
content = null;
// 将sha1加密后的字符串可与signature对比，标识该请求来源于微信
return tmpStr != null ? tmpStr.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;
}
}