/**
* 版权声明：中图一购网络科技有限公司 版权所有 违者必究 2012
* 日 期：12-6-2
*/
package com.rop.utils;
import com.rop.Constants;
import com.rop.RopException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.security.GeneralSecurityException;
import java.security.MessageDigest;
import java.util.*;
/**
* <pre>
* 功能说明：
* </pre>
*
* @author 陈雄华
* @version 1.0
*/
public class RopUtils {
private static final Logger logger = LoggerFactory.getLogger(RopUtils.class);
/**
* 使用<code>secret</code>对paramValues按以下算法进行签名： <br/>
* uppercase(hex(sha1(secretkey1value1key2value2...secret))
*
* @param paramNames 需要签名的参数名
* @param paramValues 参数列表
* @param secret
* @return
*/
public static String sign(Map<String, String> paramValues, String secret) {
return sign(paramValues,null,secret);
}
/**
* 对paramValues进行签名，其中ignoreParamNames这些参数不参与签名
* @param paramValues
* @param ignoreParamNames
* @param secret
* @return
*/
public static String sign(Map<String, String> paramValues, List<String> ignoreParamNames,String secret) {
try {
StringBuilder sb = new StringBuilder();
List<String> paramNames = new ArrayList<String>(paramValues.size());
paramNames.addAll(paramValues.keySet());
if(ignoreParamNames != null && ignoreParamNames.size() > 0){
for (String ignoreParamName : ignoreParamNames) {
paramNames.remove(ignoreParamName);
}
}
Collections.sort(paramNames);
sb.append(secret);
for (String paramName : paramNames) {
sb.append(paramName).append(paramValues.get(paramName));
}
sb.append(secret);
byte[] sha1Digest = getSHA1Digest(sb.toString());
return byte2hex(sha1Digest);
} catch (IOException e) {
throw new RopException(e);
}
}
public static String utf8Encoding(String value, String sourceCharsetName) {
try {
return new String(value.getBytes(sourceCharsetName), Constants.UTF8);
} catch (UnsupportedEncodingException e) {
throw new IllegalArgumentException(e);
}
}
private static byte[] getSHA1Digest(String data) throws IOException {
byte[] bytes = null;
try {
MessageDigest md = MessageDigest.getInstance("SHA-1");
bytes = md.digest(data.getBytes(Constants.UTF8));
} catch (GeneralSecurityException gse) {
throw new IOException(gse);
}
return bytes;
}
private static byte[] getMD5Digest(String data) throws IOException {
byte[] bytes = null;
try {
MessageDigest md = MessageDigest.getInstance("MD5");
bytes = md.digest(data.getBytes(Constants.UTF8));
} catch (GeneralSecurityException gse) {
throw new IOException(gse);
}
return bytes;
}
/**
* 二进制转十六进制字符串
*
* @param bytes
* @return
*/
private static String byte2hex(byte[] bytes) {
StringBuilder sign = new StringBuilder();
for (int i = 0; i < bytes.length; i++) {
String hex = Integer.toHexString(bytes[i] & 0xFF);
if (hex.length() == 1) {
sign.append("0");
}
sign.append(hex.toUpperCase());
}
return sign.toString();
}
public static String getUUID() {
UUID uuid = UUID.randomUUID();
return uuid.toString().toUpperCase();
}
}