http接口请求参数签名工具类的实现和测试代码

package com.yanek.test;import java.io.IOException;import java.io.UnsupportedEncodingException;import java.security.GeneralSecurityException;import java.security.MessageDigest;import java.util.ArrayList;import java.util.Collections;import java.util.HashMap;import java.util.Iterator;import java.util.List;import java.util.Map;import java.util.Set;import java.util.TreeSet;/*** 请求参数签名工具类**/public class ParamsSignUtil {public static void main(String[] args){//参数签名算法测试例子HashMap<String, String> signMap = new HashMap<String, String>();signMap.put("devid","920BF4CE-B9CC-449C-A146-BC5549D899ED");signMap.put("devtype","1");signMap.put("pcode","010210000");signMap.put("t","1472701601599");signMap.put("uid","0");signMap.put("v","4.5.3");signMap.put("ver","1.0");String secret_key="$3@%$$#"; //加密secretSystem.out.println("得到签名sign1:"+getSign(signMap,secret_key));HashMap<String, String> SignHashMap=ParamsSignUtil.sign(signMap, secret_key);//System.out.println("SignHashMap:"+SignHashMap);    String sign=(String)SignHashMap.get("appSign");    //获取参数签名字符串System.out.println("得到签名sign2:"+sign);}public static HashMap<String, String> sign(Map<String, String> paramValues,String secret) {return sign(paramValues, null, secret);}/** * @param paramValues * @param ignoreParamNames * @param secret * @return */public static HashMap<String, String> sign(Map<String, String> paramValues,List<String> ignoreParamNames, String secret) {try {HashMap<String, String> signMap = new HashMap<String, String>();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[] md5Digest = getMD5Digest(sb.toString());String sign = byte2hex(md5Digest);signMap.put("appParam", sb.toString());signMap.put("appSign", sign);return signMap;} catch (IOException e) {throw new RuntimeException("加密签名计算错误", e);}}public static String utf8Encoding(String value, String sourceCharsetName) {try {return new String(value.getBytes(sourceCharsetName), "UTF-8");} catch (UnsupportedEncodingException e) {throw new IllegalArgumentException(e);}}private static byte[] getMD5Digest(String data) throws IOException {byte[] bytes = null;try {MessageDigest md = MessageDigest.getInstance("MD5");bytes = md.digest(data.getBytes("UTF-8"));} catch (GeneralSecurityException gse) {throw new IOException(gse);}return bytes;}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());sign.append(hex.toLowerCase());}return sign.toString();}public static String getSign(Map<String, String> params,String secret){String ret="";StringBuilder sb = new StringBuilder();Set<String> keyset=params.keySet();TreeSet<String> sortSet=new TreeSet<String>();sortSet.addAll(keyset);Iterator<String> it=sortSet.iterator();sb.append(secret);while(it.hasNext()){String key=it.next();String value=params.get(key);sb.append(key).append(value);}sb.append(secret);byte[] md5Digest;try {md5Digest = getMD5Digest(sb.toString());ret = byte2hex(md5Digest);} catch (IOException e) {e.printStackTrace();}return ret;}}

输出如下：

得到签名sign1:d218314413dc847bc34ca8a10d7f9b1a
得到签名sign2:d218314413dc847bc34ca8a10d7f9b1a