如题,我是希望发送一个xml文件到服务器,但是运行之后发现报错,想知道是怎么一回事,这个报错要怎么解决?错误信息如下:

08-11 22:18:32.180: W/System.err(22906): android.os.NetworkOnMainThreadException
08-11 22:18:32.190: W/System.err(22906): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1077)
08-11 22:18:32.190: W/System.err(22906): at java.net.InetAddress.lookupHostByName(InetAddress.java:477)
08-11 22:18:32.190: W/System.err(22906): at java.net.InetAddress.getAllByNameImpl(InetAddress.java:277)
08-11 22:18:32.190: W/System.err(22906): at java.net.InetAddress.getAllByName(InetAddress.java:249)
08-11 22:18:32.190: W/System.err(22906): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:136)
08-11 22:18:32.190: W/System.err(22906): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
08-11 22:18:32.190: W/System.err(22906): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
08-11 22:18:32.190: W/System.err(22906): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)
08-11 22:18:32.190: W/System.err(22906): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
08-11 22:18:32.190: W/System.err(22906): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
08-11 22:18:32.190: W/System.err(22906): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)

另外附上我的代码:

 1 private void post()
 2     {
 3         String urlString = "http://www.gzconcern.cn/kangxin/post_pinggu";
 4         String srcPath = Environment.getExternalStorageDirectory().getPath()
 5                 + "/sys/PingGu/" + MOKUAI + ".xml";
 6         URI url = null;
 7         String end = "\r\n";
 8         String twoHyphens = "--";
 9         String boundary = "******";
10         try
11         {
12             url = new URI(urlString);
13             HttpClient httpclient = new DefaultHttpClient();
14             HttpPost request = new HttpPost(url);
15             StringEntity s = new StringEntity(du(srcPath), HTTP.UTF_8);
16             s.setContentType("text/xml charset=utf-8");
17             request.setEntity(s);
18             HttpResponse re=httpclient.execute(request);
19             String result = EntityUtils.toString(re.getEntity(), HTTP.UTF_8);
20             Log.i("result", result);
21 　　　　　}
22         catch (Exception e)
23         {
24             e.printStackTrace();
25         }
26  }