如何向wcf服务传递xml类型参数？前台为jquery ajax

LoginResponseBDU 有定义数据契约吗

有啊，只不过代码没贴出来，我用json的时候一切正常using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ServiceModel;
using System.ServiceModel.Web;
using System.Runtime.Serialization;namespace ARTWcf.BusinessEntity.Login
{
    [DataContract]
    public class LoginRequestBDU
    {
        private string _userid = "";
        private string _password = "";
        private Int16 _deviceType;        [DataMember]
        public string userid
        {
            get;
            set;
        }        [DataMember]
        public string password
        {
            get;
            set;
        }        [DataMember]
        public Int16 deviceType
        {
            get;
            set;
        }        public LoginRequestBDU()
        {

        }
    }
}

什么错误都没报，json的都能传参和返回值，xml的前台能接收返回数据，但是参数传不过去，我不知道xml应该如何传参，我这样写估计肯定是不对的

我照你的原文作了修改可以显示的哇，你对照看一下，如果还不能显示查看一下是不是跨域了，
namespace WcfService1
{
    [ServiceContract]
    public interface ILog
    {
        [OperationContract]
        [WebGet(ResponseFormat = WebMessageFormat.Xml, RequestFormat = WebMessageFormat.Xml)]
        List<LoginResponseBDU> Login(string userid, string password);
    }
    [DataContract]
    public class LoginResponseBDU
    {
        [DataMember]
        public string userid
        {
            get;
            set;
        }        [DataMember]
        public string password
        {
            get;
            set;
        }        [DataMember]
        public Int16 deviceType
        {
            get;
            set;
        }
    }
}namespace WcfService1
{


    [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
    public class Log : ILog
    {
        public List<LoginResponseBDU> Login(string userid, string password)
        {
           // LoginDAL loginDAL = new LoginDAL();
            List<LoginResponseBDU> ResponseList = new List<LoginResponseBDU>();
          //  int status = loginDAL.Login(userid, password, out ResponseList);
            ResponseList.Add(new LoginResponseBDU() {userid=userid,password=password });
            return ResponseList;
        }
    }}
<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <system.web>
    <compilation debug="true" targetFramework="4.0" />
  </system.web>
  <system.serviceModel>
    <services>
      <service name="WcfService1.Log">
        <endpoint behaviorConfiguration="Ajaxor"  binding="webHttpBinding" contract="WcfService1.ILog"/>
      </service>
    </services>
    <behaviors>
      <endpointBehaviors>
        <behavior name="Ajaxor">
          <enableWebScript/>
        </behavior>
      </endpointBehaviors>
      <serviceBehaviors>
        <behavior>
          
          <serviceMetadata httpGetEnabled="true"/>
          
          <serviceDebug includeExceptionDetailInFaults="true"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true"  aspNetCompatibilityEnabled="true"/>
  </system.serviceModel>
<system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
  </system.webServer>
</configuration>jq
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.0/jquery.min.js">
</script></head>
<script type="text/javascript">
        $(document).ready(function() {
            $('#GetUser').click(function() {

$.ajax({
                 type: "get",
                  url: "http://localhost:31162/Service1.svc/Login",
                 data:"userid=user_sssaaa&password=bbbd",
  dataType: "xml",
                   success: function (employees) {

  $(employees).find("LoginResponseBDU").each(function () {
                        $strUser = $(this);
                        User = $strUser.find("userid").text();
$("#showname").text("用户名："+User);
                    })

                  },
  error:function(a,b,c){alert(c);}

               });            });

        });
   </script>
<body>       <p id="GetUser">GetUser</p>
       <p id="showname" style="font-size:20px; background-color:#ffccff"> </p>


</body>
</html>svc
<%@ ServiceHost Language="C#" Debug="true" Service="WcfService1.Log" CodeBehind="Service1.svc.cs" %>

跨域的话得在config里加 <webHttpBinding>
<binding crossDomainScriptAccessEnabled="true" />
</webHttpBinding>

如果你解决了，得给我加几分啊，因为刚才service name="WcfService1.Log"不小心写错调试了半个多小时

什么都没有错！！！
就是错在直接使用 JSON 对象传递给服务方法：
正确做法是：
    var newp = {};
    newp.id = 299;
    newp.first_name = "Sha";
    newp.last_name = "Zhang";
    newp.country = "USA";    $.ajax({
        data: JSON.stringify(newp),
        dataType: "json",
        contentType: "application/json; charset=utf-8",
        success: function (req, tStatus) {
            alert(req);
        },
        type: "POST",
        url: "http://xxxxxxx/xxxxx"
    });

什么错误都没报，json的都能传参和返回值，xml的前台能接收返回数据，但是参数传不过去，我不知道xml应该如何传参，我这样写估计肯定是不对的一般XML网络间传值，如WS，或是WCF都建议BASE64后进行传。

调试易

如何向wcf服务传递xml类型参数？前台为jquery ajax

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