通過HttpClient實現http上傳文件

注意：要載入commons-httpclient-3.1.jar commons-codec.jar commons-logging.jar這三個包

import java.io.File;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.methods.multipart.FilePart;
import org.apache.commons.httpclient.methods.multipart.MultipartRequestEntity;
import org.apache.commons.httpclient.methods.multipart.Part;
public class Hclient
{
public static void main(String args[])
{
   String targetURL = null;// TODO 指定URL
   File targetFile = null;// TODO 指定上傳文件
targetFile = new File("1.mp3");
   targetURL = "http://localhost:8080/test/tt"; //servleturl
   PostMethod filePost = new PostMethod(targetURL);
try
   {

//通過以下方法可以模擬頁面參數提交
//filePost.setParameter("name", "中文");
//filePost.setParameter("pass", "1234");


Part[] parts = { new FilePart(targetFile.getName(), targetFile) };
    filePost.setRequestEntity(new MultipartRequestEntity(parts,filePost.getParams()));
    HttpClient client = new HttpClient();
    client.getHttpConnectionManager().getParams().setConnectionTimeout(5000);
    int status = client.executeMethod(filePost);
    if (status == HttpStatus.SC_OK)
    {
     System.out.println("上傳成功");
     // 上傳成功
    }
    else
    {
     System.out.println("上傳失敗");
     // 上傳失敗
    }
   }
   catch (Exception ex)
   {
    ex.printStackTrace();
   }
   finally
   {
    filePost.releaseConnection();
   }
}
}</pre>