Java开发SSM框架微信退款的实现

    string outtradeno = request.getparameter( "outtradeno" ); // 获取商户订单号

integer totalfee = integer.parseint(request.getparameter( "totalfee" )); // 获取支付金额

map<string, string> getmap = new hashmap<string, string>();

// 获得当前目录

string path = request.getsession().getservletcontext().getrealpath( "/" );

date now = new date();

simpledateformat dateformat = new simpledateformat( "yyyymmddhhmmss" ); // 可以方便地修改日期格式

string outrefundno = "no" + dateformat.format(now);

    refundreqdata refundreqdata = new refundreqdata();

refundreqdata.setappid(configure.getappid());

refundreqdata.setmch_id(configure.getmch_id());

refundreqdata.setnonce_str(randomstringgenerator.getrandomstringbylength( 32 ));

refundreqdata.setout_trade_no(outtradeno);

refundreqdata.setout_refund_no(outrefundno);

refundreqdata.settotal_fee(totalfee);

refundreqdata.setrefund_fee(refundfee);

refundreqdata.setop_user_id(configure.getmch_id());

refundreqdata.setnotify_url( "https://weixin.qq.com/notify/" );

    string sign = signature.getsign(refundreqdata); // 生成签名

refundreqdata.setsign(sign);

arraylist<string> list = new arraylist<string>();

     @suppresswarnings ( "rawtypes" )

  class cls = o.getclass();

     field[] fields = cls.getdeclaredfields();

     for (field f : fields) {

       f.setaccessible( true );

       if (f.get(o) != null && f.get(o) != "" ) {

        string name = f.getname();

        xstreamalias anno = f.getannotation(xstreamalias. class );

        if (anno != null )

        name = anno.value();

         list.add(name + "=" + f.get(o) + "&" );

       }

     }

     int size = list.size();

     string [] arraytosort = list.toarray( new string[size]);

     arrays.sort(arraytosort, string.case_insensitive_order);

     stringbuilder sb = new stringbuilder();

     for ( int i = 0 ; i < size; i ++) {

       sb.append(arraytosort[i]);

     }

     string result = sb.tostring();

     result += "key=" + configure.getkey();

     system.out.println( "签名数据：" +result);

     result = md5util.md5encode(result, "utf-8" ).touppercase();

     return result;

private static xstream xstream = new xstream( new xppdriver() {

      public hierarchicalstreamwriter createwriter(writer out) {

        return new prettyprintwriter(out) {

          // 对所有xml节点的转换都增加cdata标记

          boolean cdata = true ;

          //@suppresswarnings("unchecked")

          public void startnode(string name, class clazz) {

            super .startnode(name, clazz);

          }

          protected void writetext(quickwriter writer, string text) {

            if (cdata) {

              writer.write( "<![cdata[" );

              writer.write(text);

              writer.write( "]]>" );

            } else {

              writer.write(text);

            }

          }

        };

      }

    });

public string httpsrequest(string url, string xmlobj, string path) throws exception {

// 加载证书

initcert(path);

string result = null ;

httppost httppost = new httppost(url);

// 得指明使用utf-8编码，否则到api服务器xml的中文不能被成功识别

stringentity postentity = new stringentity(xmlobj, "utf-8" );

httppost.addheader( "content-type" , "text/xml" );

httppost.setentity(postentity);

// 设置请求器的配置

httppost.setconfig(requestconfig);

try {

  httpresponse response = httpclient.execute(httppost);

  httpentity entity = response.getentity();

  result = entityutils.tostring(entity, "utf-8" );

} catch (connectionpooltimeoutexception e) {

  e.printstacktrace();

} catch (connecttimeoutexception e) {

  e.printstacktrace();

} catch (sockettimeoutexception e) {

  e.printstacktrace();

} catch (exception e) {

  e.printstacktrace();

} finally {

  httppost.abort();

}

return result;

}

refundrequest refundrequest = new refundrequest();

   string result = refundrequest.httpsrequest( "https://api.mch.weixin.qq.com/secapi/pay/refund" , info, path);

   getmap = mobimessage.parsexml( new string(result.tostring().getbytes(), "utf-8" ));

   system.out.println(getmap + "............getmap" );

   json.put( "return_msg" , getmap.get( "return_msg" ));

   json.put( "return_code" , getmap.get( "return_code" ));

   json.put( "outtradeno" , outtradeno);