android上传手机图片至服务器，服务器进行保存

public void doPost(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

String temp=request.getSession().getServletContext().getRealPath("/")+"temp"; //临时目录

System.out.println("temp="+temp);

String loadpath=request.getSession().getServletContext().getRealPath("/")+"Image"; //上传文件存放目录

System.out.println("loadpath="+loadpath);

DiskFileUpload fu = new DiskFileUpload();

fu.setSizeMax(1*1024*1024); // 设置允许用户上传文件大小,单位:字节

fu.setSizeThreshold(4096); // 设置最多只允许在内存中存储的数据,单位:字节

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

//开始读取上传信息

int index=0;

List fileItems = null;

try {

fileItems = fu.parseRequest(request);

System.out.println("fileItems="+fileItems);

} catch (Exception e) {

e.printStackTrace();

}

Iterator iter = fileItems.iterator(); // 依次处理每个上传的文件

while (iter.hasNext())

{

FileItem item = (FileItem)iter.next();// 忽略其他不是文件域的所有表单信息

if (!item.isFormField())

{

String name = item.getName();//获取上传文件名,包括路径

name=name.substring(name.lastIndexOf("\\")+1);//从全路径中提取文件名

long size = item.getSize();

if((name==null||name.equals("")) && size==0)

continue;

int point = name.indexOf(".");

name=(new Date()).getTime()+name.substring(point,name.length())+index;

index++;

File fNew= new File(loadpath, name);

try {

item.write(fNew);

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

else //取出不是文件域的所有表单信息

{

String fieldvalue = item.getString();

//如果包含中文应写为：(转为UTF-8编码)

//String fieldvalue = new String(item.getString().getBytes(),"UTF-8");

}

}

String text1="11";

response.sendRedirect("result.jsp?text1=" + text1);

}
复制代码

android客户端代码

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

public void 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()

{

public void onClick(View v)

{

uploadFile();

}

});

}

private void 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 = new byte[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);

}

}

private void showDialog(String mess)

{

new AlertDialog.Builder(PhotoUpload.this).setTitle("Message")

.setMessage(mess)

.setNegativeButton("确定",new DialogInterface.OnClickListener()

{

public void onClick(DialogInterface dialog, int which)

{

}

})

.show();

}

}