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

利用ie瀏覽器外掛httpwatch檢視form表單上傳時的資料封裝格式，然後照著這資料格式自己一步一步封裝

1. packagecom.android.cist.network.form;
2. importjava.io.DataOutputStream;
3. importjava.io.InputStream;
4. importjava.io.UnsupportedEncodingException;
5. importjava.net.HttpURLConnection;
6. import
   java.net.URL;
7. importjava.net.URLEncoder;
8. importjava.util.Iterator;
9. importjava.util.Map;
10. importjava.util.Set;
11. publicclassHttpFormUtil{
12. publicstaticStringpost(StringactionUrl,Map<String,String>params,FormFile[]files){
13. try{
14. StringenterNewline="\r\n";
15. Stringfix="--";
16. Stringboundary="######"
    ;
17. StringMULTIPART_FORM_DATA="multipart/form-data";
18. URLurl=newURL(actionUrl);
19. HttpURLConnectioncon=(HttpURLConnection)url.openConnection();
20. con.setDoInput(true);
21. con.setDoOutput(true);
22. con.setUseCaches(false);
23. con.setRequestMethod("POST");
24. con.setRequestProperty("Connection","Keep-Alive"
    );
25. 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,*/*");
26. con.setRequestProperty("Accept-Encoding","gzip,deflate");
27. con.setRequestProperty("Charset","UTF-8");
28. con.setRequestProperty("Content-Type",MULTIPART_FORM_DATA+";boundary="+boundary);
29. DataOutputStreamds=newDataOutputStream(con.getOutputStream());
30. Set<String>keySet=params.keySet();
31. Iterator<String>it=keySet.iterator();
32. while(it.hasNext()){
33. Stringkey=it.next();
34. Stringvalue=params.get(key);
35. ds.writeBytes(fix+boundary+enterNewline);
36. ds.writeBytes("Content-Disposition:form-data;"+"name=\""+key+"\""+enterNewline);
37. ds.writeBytes(enterNewline);
38. //ds.write(value.getBytes("UTF-8"));
39. ds.writeBytes(value);//如果有中文亂碼，儲存改用上面的ds.writeBytes(enterNewline);那句程式碼
40. ds.writeBytes(enterNewline);
41. }
42. if(files!=null&&files.length>0){
43. ds.writeBytes(fix+boundary+enterNewline);
44. ds.writeBytes("Content-Disposition:form-data;"+"name=\""+files[0].getFormname()+"\""+";filename=\""+files[0].getFilname()+"\""+enterNewline);
45. ds.writeBytes(enterNewline);
46. ds.write(files[0].getData());
47. ds.writeBytes(enterNewline);
48. }
49. ds.writeBytes(fix+boundary+fix+enterNewline);
50. ds.flush();
51. InputStreamis=con.getInputStream();
52. intch;
53. StringBufferb=newStringBuffer();
54. while((ch=is.read())!=-1){
55. b.append((char)ch);
56. }
57. ds.close();
58. returnb.toString().trim();
59. }catch(Exceptione){
60. thrownewRuntimeException(e);
61. }
62. }
63. publicstaticStringencode(Stringurl){
64. try{
65. returnURLEncoder.encode(url,"UTF-8");
66. }catch(UnsupportedEncodingExceptionex){
67. returnurl;
68. }
69. }
70. }