支付宝回来页验证失败——mysign.equals(request.getParameter("sign"))

支付宝返回页验证失败——mysign.equals(request.getParameter("sign"))

import com.iim.timeeb.common.AlipayConfig;import java.io.UnsupportedEncodingException;import java.util.HashMap;import java.util.Iterator;import java.util.Map;import javax.servlet.http.HttpServletRequest;public class AlipayCheck {    public static Map check(HttpServletRequest request) throws UnsupportedEncodingException {        String get_order = "";        String get_total_fee = "";        String get_subject = "";        String get_body = "";        String extra_common_param = "";        String alipayNotifyURL = "http://notify.alipay.com/trade/notify_query.do?"                + "partner="                + AlipayConfig.partnerID                + "&notify_id="                + request.getParameter("notify_id");        String responseTxt = CheckURL.check(alipayNotifyURL);        Map params = new HashMap();        Map requestParams = request.getParameterMap();        for (Iterator iter = requestParams.keySet().iterator(); iter.hasNext();) {            String name = (String) iter.next();            String[] values = (String[]) requestParams.get(name);            String valueStr = "";            for (int i = 0; i < values.length; i++) {                valueStr = (i == values.length - 1) ? valueStr + values[i] : valueStr + values[i] + ",";            }            valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");            params.put(name, valueStr);        }        String mysign = SignatureHelper_return.sign(params, AlipayConfig.key);        boolean flag = false;        if (mysign.equals(request.getParameter("sign")) && responseTxt.equals("true")) {            if (request.getParameter("trade_status").equals("TRADE_FINISHED") || request.getParameter("trade_status").equals("TRADE_SUCCESS")) {                get_order = request.getParameter("out_trade_no");                get_total_fee = request.getParameter("total_fee");                get_subject = request.getParameter("subject");                get_body = request.getParameter("body");                extra_common_param = request.getParameter("extra_common_param");                flag = true;            }        }        //返回需要的参数        Map returnMap = new HashMap();        returnMap.put("flag", flag);        returnMap.put("get_order", get_order);        returnMap.put("get_total_fee", get_total_fee);        returnMap.put("get_subject", get_subject);        returnMap.put("get_body", get_body);        returnMap.put("extra_common_param", extra_common_param);        return returnMap;    }}

?支付宝在返回页面的验证中，有时候会遇到验证失败的问题，即这个验证不对：

mysign.equals(request.getParameter("sign")) 

出现这问题如果实在调试不好了，可以试试加上上面黄色的代码，也就是编码问题：

valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");

这个问题以前遇到过一次解决了，这次忘了，害得我又调试了好长时间，在此笔记一下！

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