AlipayBase.java

package com.jshop.pay.alipay.fh.util;

import java.io.FileWriter;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;




public class AlipayBase {

	public static String BuildMysign(Map sArray, String key) {
		String prestr = CreateLinkString(sArray);
		prestr = prestr + key;
		String mysign = Md5Encrypt.md5(prestr);
		return mysign;
	}

	public static Map ParaFilter(Map sArray){
		List keys = new ArrayList(sArray.keySet());
		Map sArrayNew = new HashMap();
		
		for(int i = 0; i < keys.size(); i++){
			String key = (String) keys.get(i);
			String value = (String) sArray.get(key);
			
			if(value.equals("") || value == null || 
					key.equalsIgnoreCase("sign") || key.equalsIgnoreCase("sign_type")){
				continue;
			}
			
			sArrayNew.put(key, value);
		}
		
		return sArrayNew;
	}
	

	public static String CreateLinkString(Map params){
		List keys = new ArrayList(params.keySet());
		Collections.sort(keys);

		String prestr = "";

		for (int i = 0; i < keys.size(); i++) {
			String key = (String) keys.get(i);
			String value = (String) params.get(key);

			if (i == keys.size() - 1) {
				prestr = prestr + key + "=" + value;
			} else {
				prestr = prestr + key + "=" + value + "&";
			}
		}

		return prestr;
	}
	

	public static String CreateLinkString_urlencode(Map params, String input_charset){
		List keys = new ArrayList(params.keySet());
		Collections.sort(keys);

		String prestr = "";

		for (int i = 0; i < keys.size(); i++) {
			String key = (String) keys.get(i);
			String value = (String) params.get(key);

			try {
				prestr = prestr + key + "=" + URLEncoder.encode(value,input_charset) + "&";
			} catch (UnsupportedEncodingException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}

		return prestr;
	}
	
	
	public static void LogResult(String sWord){
		
		try {
			FileWriter writer = new FileWriter("D:\\alipay_log" + System.currentTimeMillis() + ".txt");
			writer.write(sWord);
			writer.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}