com.pdd.pop.sdk.common.util.SignUtils Maven / Gradle / Ivy
package com.pdd.pop.sdk.common.util;
import com.pdd.pop.sdk.common.constant.Constants;
import java.util.Map;
import java.util.TreeMap;
/**
* @author xuanli
* @Description: 签名工具类
* @date 2018/12/2 17:12
*/
public final class SignUtils {
/**
* 构建签名原字符串
* 当requestParams为null 或者 空，则原串为空字符串
*
* @param requestParams : 请求参数
* @param clientSecret : 签名秘钥
* @return
*/
public static String buildSignSource(Map requestParams, String clientSecret) {
if (null == requestParams || requestParams.isEmpty()) {
return "";
}
Map signSrcMap = requestParams;
// 如果不是 TreeMap 则变成TreeMap 主要是为了key排序
if (!(requestParams instanceof TreeMap)) {
signSrcMap = new TreeMap();
signSrcMap.putAll(requestParams);
}
StringBuilder signSrcBuilder = new StringBuilder().append(clientSecret);
for (Map.Entry entry : signSrcMap.entrySet()) {
signSrcBuilder.append(entry.getKey()).append(entry.getValue());
}
signSrcBuilder.append(clientSecret);
return signSrcBuilder.toString();
}
/**
* 构建签名
*
* @param requestParams : 请求参数
* @param clientSecret : 签名秘钥
* @return
*/
public static String sign(Map requestParams, String clientSecret) {
return sign(requestParams, clientSecret, Constants.MD5);
}
/**
* 构建签名
*
* @param requestParams : 请求参数
* @param clientSecret : 签名秘钥
* @param signMethod : 签名方法，默认是MD5
* @return
*/
public static String sign(Map requestParams, String clientSecret, String signMethod) {
String signSrc = buildSignSource(requestParams, clientSecret);
return sign(signSrc, signMethod);
}
/**
* 构建签名
*
* @param signSrc : 请求参数
* @param signMethod : 签名方法，默认是MD5
* @return
*/
public static String sign(String signSrc, String signMethod) {
if (Constants.MD5.equals(signMethod)) {
return DigestUtil.md5(signSrc).toUpperCase();
}
throw new RuntimeException("Not Support signMethod:" + signMethod);
}
}