Java访问基于NTLM协议的SharePoint List Web服务的示例！

     最近发现Java的HttpClient从4.1版本以后就开始支持NTLM协议了，之前版本是不支持NTLM协议的（但可以通过开源的JCIFS library实现）。由于项目中其他系统(Java)需要调用基于NTLM协议的SharePoint List Web服务,之前是用了一个开源的Http组件JCIFS library实现模拟身份认证的，具体网址如下：http://jcifs.samba.org/src/，这样就可以正常访问SharePoint的列表服务了。

 

    本文主要介绍一种代码更为简洁，使用更为简便的基于最新版本HttpClient 4.2.5，该组件下载网址如下：http://hc.apache.org/downloads.cgi，

      如Java程序需要访问SharePoint的自定义列表服务，在浏览器中查看此列表的XML如下图：

    需要注意的是此XML的编码方式是采用UTF-8格式的，如采用Dom4j中解析此XML还需要进行特殊的处理，确保文件头是UTF-8格式的，默认并不是此格式，完整的Java示例代码如下：

import java.io.*;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.apache.http.HttpHost;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.NTCredentials;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.protocol.BasicHttpContext;
import org.apache.http.protocol.HttpContext;

import java.util.Iterator;
import org.dom4j.Document;  
import org.dom4j.Element;  
import org.dom4j.io.SAXReader;  



public class Test {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        DefaultHttpClient httpclient = new DefaultHttpClient();
        NTCredentials creds = new NTCredentials("UsrName", "PassWord", "my", "contosouat");
        httpclient.getCredentialsProvider().setCredentials(AuthScope.ANY, creds);
        HttpHost target = new HttpHost("portal.contoso.uat", 80, "http");
        // Make sure the same context is used to execute logically related requests
        HttpContext localContext = new BasicHttpContext();
        // Execute a cheap method first. This will trigger NTLM authentication
                    HttpGet httpget = new HttpGet("http://portal.contoso.uat/sites/cockpit/_vti_bin/listdata.svc/自定义列表");
        //httpget.setHeader("accept", "application/json"); 
        HttpResponse response1 = null;
        try {
            response1 = httpclient.execute(target, httpget, localContext);
            //System.out.print(response1.toString());
        } catch (ClientProtocolException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        HttpEntity entity1 = response1.getEntity();
        
        try {
                    
              delFile("c:/自定义列表.xml");
             
              saveFile("c:/自定义列表.xml",EntityUtils.toString(entity1),false);
                                                   
             SAXReader reader = new SAXReader();
            
             try
                {
                
                                 
                Document document = reader.read(new File("c:/自定义列表.xml"));
                
                 
                
                                 
                 Element rootElm = document.getRootElement();
                 
                 // 枚举根节点下所有子节点       
                 for (Iterator ie = rootElm.elementIterator(); ie.hasNext();) 
                 {        
                     Element element = (Element) ie.next();      
               
                     if(element.getName()=="entry")
                     {
                                                 for (Iterator ic = element.elementIterator(); ic.hasNext();) 
                         {      
                             Element Celement = (Element) ic.next(); 
                             
                             if(Celement.getName()=="content")
                              {
                             
                                 for (Iterator ip = Celement.elementIterator(); ip.hasNext();) 
                                 {      
                                     Element Pelement = (Element) ip.next(); 
                                     
                                     for (Iterator ix = Pelement.elementIterator(); ix.hasNext();) 
                                     {      
                                         Element Xelement = (Element) ix.next(); 
                                         
                                         if(Xelement.getName()=="人员名称" || Xelement.getName()=="应发工资")
                                         {
                                             System.out.println(Xelement.getName()+":"+Xelement.getData());
                                         }
                                     }
                                     //System.out.println(Pelement.getName());
                                 }
                                 //System.out.println(Celement.getName());
                              }
                         }
                                            }
                     
                 }
                 
                 
                              
                 
                                                       
                                          }catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            

              
        
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        
    }

    
      
     public static void saveFile(String file, String data, boolean append) throws IOException {
          BufferedWriter bw = null;
          OutputStreamWriter osw = null;
            
          File f = new File(file);
          FileOutputStream fos = new FileOutputStream(f, append);
          try {
             // write UTF8 BOM mark if file is empty
             if (f.length() < 1) {
                final byte[] bom = new byte[] { (byte)0xEF, (byte)0xBB, (byte)0xBF };
                fos.write(bom);
             }

             osw = new OutputStreamWriter(fos, "UTF-8");
             bw = new BufferedWriter(osw);
             if (data != null) bw.write(data);
          } catch (IOException ex) {
             throw ex;
          } finally {
             try { bw.close(); fos.close(); } catch (Exception ex) { }
          }
       }

    /**  
       * 删除文件  
       * @param filePathAndName String 文件路径及名称 如c:/file.xml  
       * @param fileContent String  
       * @return boolean  
       */  
      public static void delFile(String filePathAndName) {   
        try {   
          String filePath = filePathAndName;   
         filePath = filePath.toString();   
         java.io.File myDelFile = new java.io.File(filePath);   
          myDelFile.delete();   
      
        }   
        catch (Exception e) {   
         System.out.println("删除文件操作出错");   
          e.printStackTrace();   
      
        }   
      
      }   
      
      
}

 该代码执行结果如下图：

    通过以上步骤就可以正常访问SharePoint的列表并可以进行正常解析数据，可以根据以上代码进一步扩展和完善，以满足实际需求。 

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