SharePoint(WSS)学习(7) WSS中使用Web Service

由于需要在WSS中使用Web Service，经过摸索，终于找到比较合适的方法来开发部署Web Service。

1.建立Asmx
新建SharePoint Empty项目，添加Module，添加ASMX文件，编写ASMX后台代码。
如：TestAsmx.asmx

<%@ WebService Language="C#" Class="WebPartWithAscx.TestAsmx,SampleAsmx, Version=1.0.0.0, Culture=neutral, PublicKeyToken=9f4da00116c38ec5" %>

TestAsmx.asmx.cs:

using System.Web.Services;

namespace WebPartWithAscx
{
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    [System.ComponentModel.ToolboxItem(false)]
    public class TestAsmx : System.Web.Services.WebService
    {

        [WebMethod]
        public string HelloWorld()
        {
            return "Hello World";
        }
    }
}

然后修改设置Module.xml，关键是设置URL：

<?xml version="1.0" encoding="utf-8"?>
<Elements Id="a7d06f55-3330-46cb-9c87-8c9481fc0047" xmlns="http://schemas.microsoft.com/sharepoint/">
  <Module Name="SampleAsmx" Url="UserWebServices">
    <File Path="TestAsmx.asmx" Url="TestAsmx.asmx" />
  </Module>
</Elements>

编译部署，发现部署失败，信息为：The file you are attempting to save or retrieve has been blocked from this Web site by the server administrators.
原因是asmx文件类型被禁止。
打开Central Administration -> Operations -> Blocked file types，把列表中的asmx文件类型删掉，保存。可正常部署运行asmx，用wsdl命令行生成该asmx的代理类。加到该Module中(注意：WebService定义和代理类通常情况下是分离的，在这里为演示，将他们放到一起；WebService 代理类的URL应该能够配置，可写在Web.config中，本文从略。)，注意设置命名空间，不要与asmx定义冲突，编译部署。

2.测试Asmx。
在解决方案中添加WebPart项目。
编写调用WebService的代码，部署运行WebPart，发现出现错误：wss The request failed with HTTP status 401: Unauthorized.
原因是没有权限访问该WebService，为WebService添加当前的Credentials：
asmx.Credentials = System.Net.CredentialCache.DefaultCredentials;
再次部署能够正确运行，TestSampleAsmx.cs最终代码为：

using System;
using System.Runtime.InteropServices;
using System.Web.UI.WebControls;


namespace TestSampleAsmx
{
    [Guid("a9a79045-ee68-45de-ab33-174fa175f9c9")]
    public class TestSampleAsmx : System.Web.UI.WebControls.WebParts.WebPart
    {
        Label lbl = null;
        Button btn = null;

        public TestSampleAsmx()
        {
        }

        protected override void CreateChildControls()
        {
            btn = new Button();
            btn.Text = "Call Web Service";
            btn.Click += new EventHandler(btn_Click);

            lbl = new Label();

            this.Controls.Add(btn);
            this.Controls.Add(lbl);
        }

        void btn_Click(object sender, EventArgs e)
        {
            try
            {
                Xianfen.Net.Asmx.TestAsmx asmx = new Xianfen.Net.Asmx.TestAsmx();
                asmx.Credentials = System.Net.CredentialCache.DefaultCredentials;
                lbl.Text = asmx.HelloWorld();
            }
            catch (Exception ex)
            {
                lbl.Text = ex.Message;
            }
        }
    }
}

最终项目视图为：

 

添加WebPart，运行后如图：


示例下载：点击下载

飘遥的Blog：http://www.cnblogs.com/zxjay/
作者：飘遥(周振兴)