need to depend on the package
commons-codec-1.3.jar
/**
* Get signature signature string* @param URL access URL
* @param data parameter data in josn format
* @param timestamp timestamp
* @param methodName method name
* @return signature result
*/
public static String getSign(String URL, String data ,String timestamp ,String methodName){
String params = "";
params = URL+data+timestamp+methodName;
return DigestUtils.md5Hex(getContentBytes(params, "ASCII"));
}
/**
* @param content
* @param charset
* @return
* @throws SignatureException
* @throws UnsupportedEncodingException
*/
private static byte[] getContentBytes(String content, String charset) {
if (charset == null || "".equals(charset)) {
return content.getBytes();
}
try {
return content.getBytes(charset);
} catch (UnsupportedEncodingException e) {
throw new RuntimeException("MD5签名过程中出现错误,指定的编码集错误:" + charset);
}
}