RsRequestUtils.java
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package com.bsth.util;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.security.MessageDigest;
import java.util.*;
/**
* RS 接口调用工具类
* Created by panzhao on 2017/8/2.
*/
public class RsRequestUtils {
private static String password;
static {
password = "e126853c7f6f43b4857fa8dfe3b28b5d90be9e68";
}
static Logger logger = LoggerFactory.getLogger(RsRequestUtils.class);
/**
* 生成参数字符串
* @return
*/
public static String getParams(){
String rs="";
try {
String nonce = getNonce(6);
long t = System.currentTimeMillis();
Map<String, String> map = new HashMap<>();
map.put("password", password);
map.put("timestamp", t + "");
map.put("nonce", nonce);
String sign = getSHA1(map);
rs = "?password="+password+"×tamp="+t+"&nonce="+nonce+"&sign="+sign;
}catch (Exception e){
logger.error("", e);
}
return rs;
}
/**
* 生成参数字符串
* @return
*/
public static String getParams(Map<String, String> paramMap){
StringBuilder rs=new StringBuilder("?");
try {
String nonce = getNonce(6);
long t = System.currentTimeMillis();
paramMap.put("password", password);
paramMap.put("timestamp", t + "");
paramMap.put("nonce", nonce);
String sign = getSHA1(paramMap);
paramMap.put("sign", sign);
Set<String> ks = paramMap.keySet();
for(String k : ks){
rs.append(k + "=" + paramMap.get(k) + "&");
}
rs.deleteCharAt(rs.length() - 1);
}catch (Exception e){
logger.error("", e);
}
return rs.toString();
}
/**
* 生成随机字符串
* @return
*/
public static String getNonce(int length) {
String base = "abcdefghijklmnopqrstuvwxyz0123456789";
Random random = new Random();
StringBuffer sb = new StringBuffer();
for (int i = 0; i < length; i++) {
int number = random.nextInt(base.length());
sb.append(base.charAt(number));
}
return sb.toString();
}
private static String getSHA1(Map<String, String> map) throws Exception {
try {
String[] array = new String[map.size()];
map.values().toArray(array);
StringBuffer sb = new StringBuffer();
// 字符串排序
Arrays.sort(array);
for (int i = 0; i < array.length; i++) {
sb.append(array[i]);
}
String str = sb.toString();
// SHA1签名生成
MessageDigest md = MessageDigest.getInstance("SHA-1");
md.update(str.getBytes());
byte[] digest = md.digest();
StringBuffer hexStr = new StringBuffer();
String shaHex;
for (int i = 0; i < digest.length; i++) {
shaHex = Integer.toHexString(digest[i] & 0xFF);
if (shaHex.length() < 2) {
hexStr.append(0);
}
hexStr.append(shaHex);
}
return hexStr.toString();
} catch (Exception e) {
throw e;
}
}
}