android中模拟http协议表单上传

转自：http://helloandroid.iteye.com/blog/1183853

利用ie浏览器插件httpwatch查看form表单上传时的数据封装格式，然后照着这数据格式自己一步一步封装

 packagecom.android.cist.network.form;

 importjava.io.DataOutputStream;
 importjava.io.InputStream;
 importjava.io.UnsupportedEncodingException;
 importjava.net.HttpURLConnection;
 importjava.net.URL;
 importjava.net.URLEncoder;
 importjava.util.Iterator;
 importjava.util.Map;
 importjava.util.Set;

 publicclassHttpFormUtil{

 publicstaticStringpost(StringactionUrl,Mapparams,FormFile[]files){
 try{
 StringenterNewline="\r\n";
 Stringfix="--";
 Stringboundary="######";
 StringMULTIPART_FORM_DATA="multipart/form-data";

 URLurl=newURL(actionUrl);

 HttpURLConnectioncon=(HttpURLConnection)url.openConnection();
 con.setDoInput(true);
 con.setDoOutput(true);
 con.setUseCaches(false);
 con.setRequestMethod("POST");
 con.setRequestProperty("Connection","Keep-Alive");
 con.setRequestProperty("Accept","image/gif,image/x-xbitmap,image/jpeg,image/pjpeg,application/x-shockwave-flash,application/msword,application/vnd.ms-excel,application/vnd.ms-powerpoint,*/*");
 con.setRequestProperty("Accept-Encoding","gzip,deflate");
 con.setRequestProperty("Charset","UTF-8");
 con.setRequestProperty("Content-Type",MULTIPART_FORM_DATA+";boundary="+boundary);

 DataOutputStreamds=newDataOutputStream(con.getOutputStream());
 SetkeySet=params.keySet();
 Iteratorit=keySet.iterator();

 while(it.hasNext()){
 Stringkey=it.next();
 Stringvalue=params.get(key);
 ds.writeBytes(fix+boundary+enterNewline);
 ds.writeBytes("Content-Disposition:form-data;"+"name=\""+key+"\""+enterNewline);
 ds.writeBytes(enterNewline);
 //ds.write(value.getBytes("UTF-8"));
 ds.writeBytes(value);//如果有中文乱码，保存改用上面的ds.writeBytes(enterNewline);那句代码
 ds.writeBytes(enterNewline);
 }

 if(files!=null&&files.length>0){
 ds.writeBytes(fix+boundary+enterNewline);
 ds.writeBytes("Content-Disposition:form-data;"+"name=\""+files[0].getFormname()+"\""+";filename=\""+files[0].getFilname()+"\""+enterNewline);
 ds.writeBytes(enterNewline);
 ds.write(files[0].getData());
 ds.writeBytes(enterNewline);
 }

 ds.writeBytes(fix+boundary+fix+enterNewline);
 ds.flush();

 InputStreamis=con.getInputStream();
 intch;
 StringBufferb=newStringBuffer();

 while((ch=is.read())!=-1){
 b.append((char)ch);
 }
 ds.close();

 returnb.toString().trim();

 }catch(Exceptione){
 thrownewRuntimeException(e);
 }
 }

 publicstaticStringencode(Stringurl){
 try{
 returnURLEncoder.encode(url,"UTF-8");
 }catch(UnsupportedEncodingExceptionex){
 returnurl;
 }
 }

 }