POST java simulation of the application form HTTPCLIENT operation and matters needing attention

Httpclient method used to post the data source code:

Package post;

Import java.io.IOException;

Import org.apache.commons.httpclient.Header;
Import org.apache.commons.httpclient.HttpClient;
Import org.apache.commons.httpclient.HttpException;
Import org.apache.commons.httpclient.HttpStatus;
Import org.apache.commons.httpclient.NameValuePair;
Import org.apache.commons.httpclient.methods.PostMethod;

(Public class PostHttp

/ **
* @ Param args
* /
Public static void main (String [] args) (
/ / TODO Auto-generated method stub
HttpClient httpClient = new HttpClient ();
String url = "http://193.167.13.21/setup.cgi";
PostMethod postMethod = new PostMethod (url);
/ / Fill in the value of various forms domain
NameValuePair data [] = (
New NameValuePair ( "ID", "11"),
New NameValuePair ( "mtg", "0"),
New NameValuePair ( "haveCookie", "0"),
New NameValuePair ( "backID", "30"),
New NameValuePair ( "psw", "password")
);
/ / Add to the value of the form in postMethod
PostMethod.setRequestBody (data);
/ / Implementation postMethod
Int statusCode = 0;
Try (
StatusCode = httpClient.executeMethod (postMethod);
) Catch (HttpException e) (
/ / TODO Auto-generated catch block
E.printStackTrace ();
) Catch (IOException e) (
/ / TODO Auto-generated catch block
E.printStackTrace ();
)
/ / HttpClient to receive follow-up services for the request, such as POST and PUT be processed automatically transmitted
/ / 301 or 302
If (HttpStatus.SC_MOVED_PERMANENTLY statusCode == | | == HttpStatus.SC_MOVED_TEMPORARILY statusCode)
(
/ / Removed from scratch to address
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.");
)
Return;
)
Else
(
System.out.println (postMethod.getStatusLine ());
String str = "";
Try (
PostMethod.getResponseBodyAsString str = ();
) Catch (IOException e) (
/ / TODO Auto-generated catch block
E.printStackTrace ();
)
System.out.println (str);
)
PostMethod.releaseConnection ();
Return;
)