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
publicvoiddoPost(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=newDiskFileUpload();
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
intindex=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
longsize=item.getSize();
if((name==null||name.equals(""))&&size==0)
continue;
intpoint=name.indexOf(".");
name=(newDate()).getTime()+name.substring(point,name.length())+index;
index++;
File fNew=newFile(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);
}
android客户端代码
publicclassPhotoUploadextendsActivity {
privateString newName="image.jpg";
privateString uploadFile="/sdcard/image.JPG";
privateString actionUrl="http://192.168.0.71:8086/HelloWord/myForm";
privateTextView mText1;
privateTextView mText2;
privateButton mButton;
@Override
publicvoidonCreate(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);
/*设置mButton的onClick事件处理*/
mButton=(Button) findViewById(R.id.myButton);
mButton.setOnClickListener(newView.OnClickListener()
{
publicvoidonClick(View v)
{
uploadFile();
}
});
}
/*上传文件至Server的方法*/
privatevoiduploadFile()
{
String end="\r\n";
String twoHyphens="--";
String boundary="*****";
try
{
URL url=newURL(actionUrl);
HttpURLConnection con=(HttpURLConnection)url.openConnection();
/*允许Input、Output，不使用Cache*/
con.setDoInput(true);
con.setDoOutput(true);
con.setUseCaches(false);
/*设置传送的method=POST*/
con.setRequestMethod("POST");
/*setRequestProperty*/
con.setRequestProperty("Connection","Keep-Alive");
con.setRequestProperty("Charset","UTF-8");
con.setRequestProperty("Content-Type",
"multipart/form-data;boundary="+boundary);
/*设置DataOutputStream*/
DataOutputStream ds=
newDataOutputStream(con.getOutputStream());
ds.writeBytes(twoHyphens+boundary+end);
ds.writeBytes("Content-Disposition: form-data;"+
"name=\"file1\";filename=\""+
newName+"\""+end);
ds.writeBytes(end);
/*取得文件的FileInputStream*/
FileInputStream fStream=newFileInputStream(uploadFile);
/*设置每次写入1024bytes*/
intbufferSize=1024;
byte[] buffer=newbyte[bufferSize];
intlength=-1;
/*从文件读取数据至缓冲区*/
while((length=fStream.read(buffer))!=-1)
{
/*将资料写入DataOutputStream中*/
ds.write(buffer,0, length);
}
ds.writeBytes(end);
ds.writeBytes(twoHyphens+boundary+twoHyphens+end);
/*close streams*/
fStream.close();
ds.flush();
/*取得Response内容*/
InputStream is=con.getInputStream();
intch;
StringBuffer b=newStringBuffer();
while( ( ch=is.read() )!=-1)
{
b.append( (char)ch );
}
/*将Response显示于Dialog*/
showDialog("上传成功"+b.toString().trim());
/*关闭DataOutputStream*/
ds.close();
}
catch(Exception e)
{
showDialog("上传失败"+e);
}
}
/*显示Dialog的method*/
privatevoidshowDialog(String mess)
{
newAlertDialog.Builder(PhotoUpload.this).setTitle("Message")
.setMessage(mess)
.setNegativeButton("确定",newDialogInterface.OnClickListener()
{
publicvoidonClick(DialogInterface dialog,intwhich)
{
}
})
.show();
}
}