Android通過http傳輸文件到servlet

java.lang.NoClassDefFoundError代碼部分來自網絡，這裡引用的是apache給的開源jar包，實現很方便的，(commons-httpclient-3.1Android客戶端使用)，(commons-fileupload-1.2.2,commons-io-2.4,servlet的使用，記得把後面兩個jar包放在 C:\Program Files\Java\jdk1.7.0_09\jre\lib\ext目錄下)

下面貼貼代碼吧：

httpclict如下：

package com.example.http ;

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

{
/*
* private Context mContext ;
*
* public Hclient ( Context c ) { this.mContext = c ; }
*/

public void UpLoadFile ( String str)
{

String targetURL = null ;// TODO 指定URL
File targetFile = null ;// TODO 指定上傳文件
targetFile = new File ( str) ;
targetURL = "http://192.168.1.100:8081/http/Http" ; // 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 ( ) ;

}
}
}