工行B2C在线支付业务

有谁做过工行B2C在线支付业务，高手帮帮忙！ 或者有测试demo版借鉴一下！ 先谢谢了!
src = "<?xml version=""1.0"" encoding=""GBK"" standalone=""no""?>"
src = src & "<B2CReq>"
src = src & "<interfaceName>ICBC_PERBANK_B2C</interfaceName>"
src = src & "<interfaceVersion>1.0.0.11</interfaceVersion>"
src = src & "<orderInfo>"
src = src & "<orderDate>"&orderDate&"</orderDate>"
src = src & "<curType>001</curType>"
src = src & "<merID>35******94693</merID>"
src = src & "<subOrderInfoList>"
src = src & "<subOrderInfo>"
src = src & "<orderid>201105051216291</orderid>"
src = src & "<amount>1</amount>"
src = src & "<installmentTimes>1</installmentTimes>"
src = src & "<merAcct>35*******9006584716</merAcct>"
src = src & "<goodsID>2011012800016</goodsID>"
src = src & "<goodsName>在线充值</goodsName>"
src = src & "<goodsNum>1</goodsNum>"
src = src & "<carriageAmt>0</carriageAmt>"
src = src & "</subOrderInfo>"
src = src & "</subOrderInfoList>"
src = src & "</orderInfo>"
src = src & "<custom>"
src = src & "<verifyJoinFlag>0</verifyJoinFlag>"
src = src & "<Language>ZH_CN</Language>"
src = src & "</custom>"
src = src & "<message>"
src = src & "<creditType>2</creditType>"
src = src & "<notifyType>HS</notifyType>"
src = src & "<resultType>1</resultType>"
src = src & "<merReference>localhost</merReference>"
src = src & "<merCustomIp></merCustomIp>"
src = src & "<goodsType>0</goodsType>"
src = src & "<merCustomID>chsuibianyong</merCustomID>"
src = src & "<merCustomPhone>13375600888</merCustomPhone>"
src = src & "<goodsAddress>黑龙江省</goodsAddress>"
src = src & "<merOrderRemark>商品订单</merOrderRemark>"
src = src & "<merHint>谨防上当</merHint>"
src = src & "<remark1></remark1>"
src = src & "<remark2></remark2>"
src = src & "<merURL>http://localhost:1075/getinfo.asp</merURL>"
src = src & "<merVAR>test</merVAR>"
src = src & "</message>"
src = src & "</B2CReq>"


总是验证签名错误！！！ 求各位高手指点！！！