java HttpClient Post实例

private void postMethod(String url) throws IOException
{
url = "http://www.newsmth.net/bbslogin2.php";
PostMethod postMethod = new PostMethod(url);
// 填入各个表单域的值
NameValuePair[] data = { new NameValuePair("id", "herrapfel"),new NameValuePair("passwd", "") };
// 将表单的值放入postMethod中
postMethod.setRequestBody(data);
// 执行postMethod
int statusCode = httpClient.executeMethod(postMethod);
System.out.println(" status code:" + statusCode);
// HttpClient对于要求接受后继服务的请求，象POST和PUT等不能自动处理转发




if(statusCode == HttpStatus.SC_OK)
{
StringBuffer contentBuffer = new StringBuffer();
InputStream in = postMethod.getResponseBodyAsStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(in,postMethod.getResponseCharSet()));
String inputLine = null;
while((inputLine = reader.readLine()) != null)
{
contentBuffer.append(inputLine);
System.out.println("input line:"+ inputLine);
contentBuffer.append("/n");
}
in.close();

}
else if (statusCode == HttpStatus.SC_MOVED_PERMANENTLY || statusCode == HttpStatus.SC_MOVED_TEMPORARILY)
{
// 从头中取出转向的地址
Header locationHeader = postMethod.getResponseHeader("location");
String location = null;
if (locationHeader != null)
{
location = locationHeader.getValue();
System.out.println("The page was redirected to:" + location);
}
else
{
System.err.println("Location field value is null.");
}
}







}