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,Map<String,String>params,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());
Set<String>keySet=params.keySet();
Iterator<String>it=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;
}
}

}