本实例实现了android上传手机图片至服务器，服务器进行保存
服务器servlet代码
Java代码
1. doPost(HttpServletRequest request, HttpServletResponse response)
2. throws ServletException, IOException {
3.
4. String temp=request.getSession().getServletContext().getRealPath("/")+"temp"; //临时目录
5. System.out.println("temp="+temp);
6. String loadpath=request.getSession().getServletContext().getRealPath("/")+"Image"; //上传文件存放目录
7. System.out.println("loadpath="+loadpath);
8. DiskFileUpload fu =new DiskFileUpload();
9. fu.setSizeMax(1*1024*1024); // 设置允许用户上传文件大小,单位:字节
10. fu.setSizeThreshold(4096); // 设置最多只允许在内存中存储的数据,单位:字节
11. fu.setRepositoryPath(temp); // 设置一旦文件大小超过getSizeThreshold()的值时数据存放在硬盘的目录
12.
13. //开始读取上传信息
14. int index=0;
15. List fileItems =null;
16.
17.
18. try {
19. fileItems = fu.parseRequest(request);
20. System.out.println("fileItems="+fileItems);
21. } catch (Exception e) {
22. e.printStackTrace();
23. }
24.
25.
26. Iterator iter = fileItems.iterator(); // 依次处理每个上传的文件
27. while (iter.hasNext())
28. {
29. FileItem item = (FileItem)iter.next();// 忽略其他不是文件域的所有表单信息
30. if (!item.isFormField())
31. {
32. String name = item.getName();//获取上传文件名,包括路径
33. name=name.substring(name.lastIndexOf("\\")+1);//从全路径中提取文件名
34. long size = item.getSize();
35. if((name==null||name.equals("")) && size==0)
36. continue;
37. int point = name.indexOf(".");
38. name=(new Date()).getTime()+name.substring(point,name.length())+index;
39. index++;
40. File fNew=new File(loadpath, name);
41. try {
42. item.write(fNew);
43. } catch (Exception e) {
44. // TODO Auto-generated catch block
45. e.printStackTrace();
46. }
47.
48.
49. }
50. else//取出不是文件域的所有表单信息
51. {
52. String fieldvalue = item.getString();
53. //如果包含中文应写为：(转为UTF-8编码)
54. //String fieldvalue = new String(item.getString().getBytes(),"UTF-8");
55. }
56. }
57. String text1="11";
58. response.sendRedirect("result.jsp?text1="+ text1);
59. }
android客户端代码
Java代码
public class PhotoUpload extends Activity {
private String newName ="image.jpg";
private String uploadFile ="/sdcard/image.JPG";
private String actionUrl ="http://192.168.0.71:8086/HelloWord/myForm";
private TextView mText1;
private TextView mText2;
private Button mButton;
@Override
publicvoid onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.photo_upload);
mText1 = (TextView) findViewById(R.id.myText2);
//"文件路径：\n"+
mText1.setText(uploadFile);
mText2 = (TextView) findViewById(R.id.myText3);
//"上传网址：\n"+
mText2.setText(actionUrl);
mButton = (Button) findViewById(R.id.myButton);
mButton.setOnClickListener(new View.OnClickListener()
{
publicvoid onClick(View v)
{
uploadFile();
}
});
}
privatevoid uploadFile()
{
String end ="\r\n";
String twoHyphens ="--";
String boundary ="*****";
try
{
URL url =new URL(actionUrl);
HttpURLConnection con=(HttpURLConnection)url.openConnection();
con.setDoInput(true);
con.setDoOutput(true);
con.setUseCaches(false);
con.setRequestMethod("POST");
con.setRequestProperty("Connection", "Keep-Alive");
con.setRequestProperty("Charset", "UTF-8");
con.setRequestProperty("Content-Type",
"multipart/form-data;boundary="+boundary);
DataOutputStream ds =
new DataOutputStream(con.getOutputStream());
ds.writeBytes(twoHyphens + boundary + end);
ds.writeBytes("Content-Disposition: form-data; "+
"name=\"file1\";filename=\""+
newName +"\""+ end);
ds.writeBytes(end);
FileInputStream fStream =new FileInputStream(uploadFile);
int bufferSize =1024;
byte[] buffer =newbyte[bufferSize];
int length =-1;
while((length = fStream.read(buffer)) !=-1)
{
ds.write(buffer, 0, length);
}
ds.writeBytes(end);
ds.writeBytes(twoHyphens + boundary + twoHyphens + end);
fStream.close();
ds.flush();
InputStream is = con.getInputStream();
int ch;
StringBuffer b =new StringBuffer();
while( ( ch = is.read() ) !=-1 )
{
b.append( (char)ch );
}
showDialog("上传成功"+b.toString().trim());
ds.close();
}
catch(Exception e)
{
showDialog("上传失败"+e);
}
}
privatevoid showDialog(String mess)
{
new AlertDialog.Builder(PhotoUpload.this).setTitle("Message")
.setMessage(mess)
.setNegativeButton("确定",new DialogInterface.OnClickListener()
{
publicvoid onClick(DialogInterface dialog, int which)
{
}
})
.show();
}
}
