java通过Http传输文件实例
import java.net.*;import java.io.*;import org.apache.commons.httpclient.*;import org.apache.commons.httpclient.methods.*;class HttpUp{ public static int access(String URLString) { try { StringBuffer response = new StringBuffer(); HttpClient client = new HttpClient(); PostMethod method = new PostMethod(URLString); //设置Http Post数据，这里是上传文件 File f=new File("d:\\a1.txt"); FileInputStream fi=new FileInputStream(f); InputStreamRequestEntity fr=new InputStreamRequestEntity(fi); method.setRequestEntity((RequestEntity)fr); try { client.executeMethod(method); //这一步就把文件上传了 //下面是读取网站的返回网页，例如上传成功之类的 if (method.getStatusCode() == HttpStatus.SC_OK) { //读取为 InputStream，在网页内容数据量大时候推荐使用 BufferedReader reader = new BufferedReader( new InputStreamReader(method.getResponseBodyAsStream(), "GBK")); String line; while ((line = reader.readLine()) != null) { response.append(line); } reader.close(); } } catch (IOException e) { System.out.println("执行HTTP Post请求" + URLString + "时，发生异常！"); e.printStackTrace(); } finally { method.releaseConnection(); } System.out.println("--------------------"+response.toString()); return 1; } catch (Exception e) { e.printStackTrace(); return -1; } } public static void main(String args[]) { new HttpUp(); if(args.length > 0) access(args[0], args[1]); else access("http://192.168.166.46:8080/simple/upload.jsp","a.big"); }}