本实例实现了android上传手机图片至jsp服务器，服务器进行保存，具有一定的参考价值。
<span style="color: #000000;">服务器servlet代码
</span><span style="color: #0000ff;">public</span><span style="color: #0000ff;">void</span><span style="color: #000000;"> doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String temp</span><span style="color: #000000;">=</span><span style="color: #000000;">request.getSession().getServletContext().getRealPath(</span><span style="color: #800000;">"</span><span style="color: #800000;">/</span><span style="color: #800000;">"</span><span style="color: #000000;">)</span><span style="color: #000000;">+</span><span style="color: #800000;">"</span><span style="color: #800000;">temp</span><span style="color: #800000;">"</span><span style="color: #000000;">; </span><span style="color: #008000;">//</span><span style="color: #008000;">临时目录</span><span style="color: #008000;">
</span><span style="color: #000000;"> System.</span><span style="color: #0000ff;">out</span><span style="color: #000000;">.println(</span><span style="color: #800000;">"</span><span style="color: #800000;">temp=</span><span style="color: #800000;">"</span><span style="color: #000000;">+</span><span style="color: #000000;">temp);
String loadpath</span><span style="color: #000000;">=</span><span style="color: #000000;">request.getSession().getServletContext().getRealPath(</span><span style="color: #800000;">"</span><span style="color: #800000;">/</span><span style="color: #800000;">"</span><span style="color: #000000;">)</span><span style="color: #000000;">+</span><span style="color: #800000;">"</span><span style="color: #800000;">Image</span><span style="color: #800000;">"</span><span style="color: #000000;">; </span><span style="color: #008000;">//</span><span style="color: #008000;">上传文件存放目录</span><span style="color: #008000;">
</span><span style="color: #000000;"> System.</span><span style="color: #0000ff;">out</span><span style="color: #000000;">.println(</span><span style="color: #800000;">"</span><span style="color: #800000;">loadpath=</span><span style="color: #800000;">"</span><span style="color: #000000;">+</span><span style="color: #000000;">loadpath);
DiskFileUpload fu </span><span style="color: #000000;">=</span><span style="color: #0000ff;">new</span><span style="color: #000000;"> DiskFileUpload();
fu.setSizeMax(</span><span style="color: #800080;">1</span><span style="color: #000000;">*</span><span style="color: #800080;">1024</span><span style="color: #000000;">*</span><span style="color: #800080;">1024</span><span style="color: #000000;">); </span><span style="color: #008000;">//</span><span style="color: #008000;"> 设置允许用户上传文件大小,单位:字节</span><span style="color: #008000;">
</span><span style="color: #000000;"> fu.setSizeThreshold(</span><span style="color: #800080;">4096</span><span style="color: #000000;">); </span><span style="color: #008000;">//</span><span style="color: #008000;"> 设置最多只允许在内存中存储的数据,单位:字节</span><span style="color: #008000;">
</span><span style="color: #000000;"> fu.setRepositoryPath(temp); </span><span style="color: #008000;">//</span><span style="color: #008000;"> 设置一旦文件大小超过getSizeThreshold()的值时数据存放在硬盘的目录
</span><span style="color: #008000;">//</span><span style="color: #008000;">开始读取上传信息</span><span style="color: #008000;">
</span><span style="color: #0000ff;">int</span><span style="color: #000000;"> index</span><span style="color: #000000;">=</span><span style="color: #800080;">0</span><span style="color: #000000;">;
List fileItems </span><span style="color: #000000;">=</span><span style="color: #0000ff;">null</span><span style="color: #000000;">;
</span><span style="color: #0000ff;">try</span><span style="color: #000000;"> {
fileItems </span><span style="color: #000000;">=</span><span style="color: #000000;"> fu.parseRequest(request);
System.</span><span style="color: #0000ff;">out</span><span style="color: #000000;">.println(</span><span style="color: #800000;">"</span><span style="color: #800000;">fileItems=</span><span style="color: #800000;">"</span><span style="color: #000000;">+</span><span style="color: #000000;">fileItems);
} </span><span style="color: #0000ff;">catch</span><span style="color: #000000;"> (Exception e) {
e.printStackTrace();
}
Iterator iter </span><span style="color: #000000;">=</span><span style="color: #000000;"> fileItems.iterator(); </span><span style="color: #008000;">//</span><span style="color: #008000;"> 依次处理每个上传的文件</span><span style="color: #008000;">
</span><span style="color: #0000ff;">while</span><span style="color: #000000;"> (iter.hasNext())
{
FileItem item </span><span style="color: #000000;">=</span><span style="color: #000000;"> (FileItem)iter.next();</span><span style="color: #008000;">//</span><span style="color: #008000;"> 忽略其他不是文件域的所有表单信息</span><span style="color: #008000;">
</span><span style="color: #0000ff;">if</span><span style="color: #000000;"> (</span><span style="color: #000000;">!</span><span style="color: #000000;">item.isFormField())
{
String name </span><span style="color: #000000;">=</span><span style="color: #000000;"> item.getName();</span><span style="color: #008000;">//</span><span style="color: #008000;">获取上传文件名,包括路径</span><span style="color: #008000;">
</span><span style="color: #000000;"> name</span><span style="color: #000000;">=</span><span style="color: #000000;">name.substring(name.lastIndexOf(</span><span style="color: #800000;">"</span><span style="color: #800000;">\\</span><span style="color: #800000;">"</span><span style="color: #000000;">)</span><span style="color: #000000;">+</span><span style="color: #800080;">1</span><span style="color: #000000;">);</span><span style="color: #008000;">//</span><span style="color: #008000;">从全路径中提取文件名</span><span style="color: #008000;">
</span><span style="color: #0000ff;">long</span><span style="color: #000000;"> size </span><span style="color: #000000;">=</span><span style="color: #000000;"> item.getSize();
</span><span style="color: #0000ff;">if</span><span style="color: #000000;">((name</span><span style="color: #000000;">==</span><span style="color: #0000ff;">null</span><span style="color: #000000;">||</span><span style="color: #000000;">name.equals(</span><span style="color: #800000;">""</span><span style="color: #000000;">)) </span><span style="color: #000000;">&&</span><span style="color: #000000;"> size</span><span style="color: #000000;">==</span><span style="color: #800080;">0</span><span style="color: #000000;">)
</span><span style="color: #0000ff;">continue</span><span style="color: #000000;">;
</span><span style="color: #0000ff;">int</span><span style="color: #000000;"> point </span><span style="color: #000000;">=</span><span style="color: #000000;"> name.indexOf(</span><span style="color: #800000;">"</span><span style="color: #800000;">.</span><span style="color: #800000;">"</span><span style="color: #000000;">);
name</span><span style="color: #000000;">=</span><span style="color: #000000;">(</span><span style="color: #0000ff;">new</span><span style="color: #000000;"> Date()).getTime()</span><span style="color: #000000;">+</span><span style="color: #000000;">name.substring(point,name.length())</span><span style="color: #000000;">+</span><span style="color: #000000;">index;
index</span><span style="color: #000000;">++</span><span style="color: #000000;">;
File fNew</span><span style="color: #000000;">=</span><span style="color: #0000ff;">new</span><span style="color: #000000;"> File(loadpath, name);
</span><span style="color: #0000ff;">try</span><span style="color: #000000;"> {
item.write(fNew);
} </span><span style="color: #0000ff;">catch</span><span style="color: #000000;"> (Exception e) {
</span><span style="color: #008000;">//</span><span style="color: #008000;"> TODO Auto-generated catch block</span><span style="color: #008000;">
</span><span style="color: #000000;"> e.printStackTrace();
}
}
</span><span style="color: #0000ff;">else</span><span style="color: #008000;">//</span><span style="color: #008000;">取出不是文件域的所有表单信息</span><span style="color: #008000;">
</span><span style="color: #000000;"> {
String fieldvalue </span><span style="color: #000000;">=</span><span style="color: #000000;"> item.getString();
</span><span style="color: #008000;">//</span><span style="color: #008000;">如果包含中文应写为：(转为UTF-8编码)
</span><span style="color: #008000;">//</span><span style="color: #008000;">String fieldvalue = new String(item.getString().getBytes(),"UTF-8");</span><span style="color: #008000;">
</span><span style="color: #000000;"> }
}
String text1</span><span style="color: #000000;">=</span><span style="color: #800000;">"</span><span style="color: #800000;">11</span><span style="color: #800000;">"</span><span style="color: #000000;">;
response.sendRedirect(</span><span style="color: #800000;">"</span><span style="color: #800000;">result.jsp?text1=</span><span style="color: #800000;">"</span><span style="color: #000000;">+</span><span style="color: #000000;"> text1);
} </span>
android客户端代码
<span style="color: #0000ff;">public</span><span style="color: #0000ff;">class</span><span style="color: #000000;"> PhotoUpload </span><span style="color: #0000ff;">extends</span><span style="color: #000000;"> Activity {
</span><span style="color: #0000ff;">private</span><span style="color: #000000;"> String newName </span><span style="color: #000000;">=</span><span style="color: #000000;">"</span><span style="color: #000000;">image.jpg</span><span style="color: #000000;">"</span><span style="color: #000000;">;
</span><span style="color: #0000ff;">private</span><span style="color: #000000;"> String uploadFile </span><span style="color: #000000;">=</span><span style="color: #000000;">"</span><span style="color: #000000;">/sdcard/image.JPG</span><span style="color: #000000;">"</span><span style="color: #000000;">;
</span><span style="color: #0000ff;">private</span><span style="color: #000000;"> String actionUrl </span><span style="color: #000000;">=</span><span style="color: #000000;">"</span><span style="color: #000000;">http://192.168.0.71:8086/HelloWord/myForm</span><span style="color: #000000;">"</span><span style="color: #000000;">;
</span><span style="color: #0000ff;">private</span><span style="color: #000000;"> TextView mText1;
</span><span style="color: #0000ff;">private</span><span style="color: #000000;"> TextView mText2;
</span><span style="color: #0000ff;">private</span><span style="color: #000000;"> Button mButton;
@Override
</span><span style="color: #0000ff;">public</span><span style="color: #0000ff;">void</span><span style="color: #000000;"> onCreate(Bundle savedInstanceState)
{
</span><span style="color: #0000ff;">super</span><span style="color: #000000;">.onCreate(savedInstanceState);
setContentView(R.layout.photo_upload);
mText1 </span><span style="color: #000000;">=</span><span style="color: #000000;"> (TextView) findViewById(R.id.myText2);
</span><span style="color: #008000;">//</span><span style="color: #008000;">"文件路径：\n"+</span><span style="color: #008000;">
</span><span style="color: #000000;"> mText1.setText(uploadFile);
mText2 </span><span style="color: #000000;">=</span><span style="color: #000000;"> (TextView) findViewById(R.id.myText3);
</span><span style="color: #008000;">//</span><span style="color: #008000;">"上传网址：\n"+</span><span style="color: #008000;">
</span><span style="color: #000000;"> mText2.setText(actionUrl);
</span><span style="color: #008000;">/*</span><span style="color: #008000;"> 设置mButton的onClick事件处理 </span><span style="color: #008000;">*/</span><span style="color: #000000;">
mButton </span><span style="color: #000000;">=</span><span style="color: #000000;"> (Button) findViewById(R.id.myButton);
mButton.setOnClickListener(</span><span style="color: #0000ff;">new</span><span style="color: #000000;"> View.OnClickListener()
{
</span><span style="color: #0000ff;">public</span><span style="color: #0000ff;">void</span><span style="color: #000000;"> onClick(View v)
{
uploadFile();
}
});
}
</span><span style="color: #008000;">/*</span><span style="color: #008000;"> 上传文件至Server的方法 </span><span style="color: #008000;">*/</span><span style="color: #000000;">
</span><span style="color: #0000ff;">private</span><span style="color: #0000ff;">void</span><span style="color: #000000;"> uploadFile()
{
String end </span><span style="color: #000000;">=</span><span style="color: #000000;">"</span><span style="color: #000000;">\r\n</span><span style="color: #000000;">"</span><span style="color: #000000;">;
String twoHyphens </span><span style="color: #000000;">=</span><span style="color: #000000;">"</span><span style="color: #000000;">--</span><span style="color: #000000;">"</span><span style="color: #000000;">;
String boundary </span><span style="color: #000000;">=</span><span style="color: #000000;">"</span><span style="color: #000000;">*****</span><span style="color: #000000;">"</span><span style="color: #000000;">;
</span><span style="color: #0000ff;">try</span><span style="color: #000000;">
{
URL url </span><span style="color: #000000;">=</span><span style="color: #0000ff;">new</span><span style="color: #000000;"> URL(actionUrl);
HttpURLConnection con</span><span style="color: #000000;">=</span><span style="color: #000000;">(HttpURLConnection)url.openConnection();
</span><span style="color: #008000;">/*</span><span style="color: #008000;"> 允许Input、Output，不使用Cache </span><span style="color: #008000;">*/</span><span style="color: #000000;">
con.setDoInput(</span><span style="color: #0000ff;">true</span><span style="color: #000000;">);
con.setDoOutput(</span><span style="color: #0000ff;">true</span><span style="color: #000000;">);
con.setUseCaches(</span><span style="color: #0000ff;">false</span><span style="color: #000000;">);
</span><span style="color: #008000;">/*</span><span style="color: #008000;"> 设置传送的method=POST </span><span style="color: #008000;">*/</span><span style="color: #000000;">
con.setRequestMethod(</span><span style="color: #000000;">"</span><span style="color: #000000;">POST</span><span style="color: #000000;">"</span><span style="color: #000000;">);
</span><span style="color: #008000;">/*</span><span style="color: #008000;"> setRequestProperty </span><span style="color: #008000;">*/</span><span style="color: #000000;">
con.setRequestProperty(</span><span style="color: #000000;">"</span><span style="color: #000000;">Connection</span><span style="color: #000000;">"</span><span style="color: #000000;">, </span><span style="color: #000000;">"</span><span style="color: #000000;">Keep-Alive</span><span style="color: #000000;">"</span><span style="color: #000000;">);
con.setRequestProperty(</span><span style="color: #000000;">"</span><span style="color: #000000;">Charset</span><span style="color: #000000;">"</span><span style="color: #000000;">, </span><span style="color: #000000;">"</span><span style="color: #000000;">UTF-8</span><span style="color: #000000;">"</span><span style="color: #000000;">);
con.setRequestProperty(</span><span style="color: #000000;">"</span><span style="color: #000000;">Content-Type</span><span style="color: #000000;">"</span><span style="color: #000000;">,
</span><span style="color: #000000;">"</span><span style="color: #000000;">multipart/form-data;boundary=</span><span style="color: #000000;">"</span><span style="color: #000000;">+</span><span style="color: #000000;">boundary);
</span><span style="color: #008000;">/*</span><span style="color: #008000;"> 设置DataOutputStream </span><span style="color: #008000;">*/</span><span style="color: #000000;">
DataOutputStream ds </span><span style="color: #000000;">=</span><span style="color: #000000;">
</span><span style="color: #0000ff;">new</span><span style="color: #000000;"> DataOutputStream(con.getOutputStream());
ds.writeBytes(twoHyphens </span><span style="color: #000000;">+</span><span style="color: #000000;"> boundary </span><span style="color: #000000;">+</span><span style="color: #000000;"> end);
ds.writeBytes(</span><span style="color: #000000;">"</span><span style="color: #000000;">Content-Disposition: form-data; </span><span style="color: #000000;">"</span><span style="color: #000000;">+</span><span style="color: #000000;">
</span><span style="color: #000000;">"</span><span style="color: #000000;">name=\"file1\";filename=\"</span><span style="color: #000000;">"</span><span style="color: #000000;">+</span><span style="color: #000000;">
newName </span><span style="color: #000000;">+</span><span style="color: #000000;">"</span><span style="color: #000000;">\"</span><span style="color: #000000;">"</span><span style="color: #000000;">+</span><span style="color: #000000;"> end);
ds.writeBytes(end);
</span><span style="color: #008000;">/*</span><span style="color: #008000;"> 取得文件的FileInputStream </span><span style="color: #008000;">*/</span><span style="color: #000000;">
FileInputStream fStream </span><span style="color: #000000;">=</span><span style="color: #0000ff;">new</span><span style="color: #000000;"> FileInputStream(uploadFile);
</span><span style="color: #008000;">/*</span><span style="color: #008000;"> 设置每次写入1024bytes </span><span style="color: #008000;">*/</span><span style="color: #000000;">
</span><span style="color: #0000ff;">int</span><span style="color: #000000;"> bufferSize </span><span style="color: #000000;">=</span><span style="color: #000000;">1024</span><span style="color: #000000;">;
</span><span style="color: #0000ff;">byte</span><span style="color: #000000;">[] buffer </span><span style="color: #000000;">=</span><span style="color: #0000ff;">new</span><span style="color: #0000ff;">byte</span><span style="color: #000000;">[bufferSize];
</span><span style="color: #0000ff;">int</span><span style="color: #000000;"> length </span><span style="color: #000000;">=</span><span style="color: #000000;">-</span><span style="color: #000000;">1</span><span style="color: #000000;">;
</span><span style="color: #008000;">/*</span><span style="color: #008000;"> 从文件读取数据至缓冲区 </span><span style="color: #008000;">*/</span><span style="color: #000000;">
</span><span style="color: #0000ff;">while</span><span style="color: #000000;">((length </span><span style="color: #000000;">=</span><span style="color: #000000;"> fStream.read(buffer)) </span><span style="color: #000000;">!=</span><span style="color: #000000;">-</span><span style="color: #000000;">1</span><span style="color: #000000;">)
{
</span><span style="color: #008000;">/*</span><span style="color: #008000;"> 将资料写入DataOutputStream中 </span><span style="color: #008000;">*/</span><span style="color: #000000;">
ds.write(buffer, </span><span style="color: #000000;">0</span><span style="color: #000000;">, length);
}
ds.writeBytes(end);
ds.writeBytes(twoHyphens </span><span style="color: #000000;">+</span><span style="color: #000000;"> boundary </span><span style="color: #000000;">+</span><span style="color: #000000;"> twoHyphens </span><span style="color: #000000;">+</span><span style="color: #000000;"> end);
</span><span style="color: #008000;">/*</span><span style="color: #008000;"> close streams </span><span style="color: #008000;">*/</span><span style="color: #000000;">
fStream.close();
ds.flush();
</span><span style="color: #008000;">/*</span><span style="color: #008000;"> 取得Response内容 </span><span style="color: #008000;">*/</span><span style="color: #000000;">
InputStream is </span><span style="color: #000000;">=</span><span style="color: #000000;"> con.getInputStream();
</span><span style="color: #0000ff;">int</span><span style="color: #000000;"> ch;
StringBuffer b </span><span style="color: #000000;">=</span><span style="color: #0000ff;">new</span><span style="color: #000000;"> StringBuffer();
</span><span style="color: #0000ff;">while</span><span style="color: #000000;">( ( ch </span><span style="color: #000000;">=</span><span style="color: #000000;"> is.read() ) </span><span style="color: #000000;">!=</span><span style="color: #000000;">-</span><span style="color: #000000;">1</span><span style="color: #000000;"> )
{
b.append( (</span><span style="color: #0000ff;">char</span><span style="color: #000000;">)ch );
}
</span><span style="color: #008000;">/*</span><span style="color: #008000;"> 将Response显示于Dialog </span><span style="color: #008000;">*/</span><span style="color: #000000;">
showDialog(</span><span style="color: #000000;">"</span><span style="color: #000000;">上传成功</span><span style="color: #000000;">"</span><span style="color: #000000;">+</span><span style="color: #000000;">b.toString().trim());
</span><span style="color: #008000;">/*</span><span style="color: #008000;"> 关闭DataOutputStream </span><span style="color: #008000;">*/</span><span style="color: #000000;">
ds.close();
}
</span><span style="color: #0000ff;">catch</span><span style="color: #000000;">(Exception e)
{
showDialog(</span><span style="color: #000000;">"</span><span style="color: #000000;">上传失败</span><span style="color: #000000;">"</span><span style="color: #000000;">+</span><span style="color: #000000;">e);
}
}
</span><span style="color: #008000;">/*</span><span style="color: #008000;"> 显示Dialog的method </span><span style="color: #008000;">*/</span><span style="color: #000000;">
</span><span style="color: #0000ff;">private</span><span style="color: #0000ff;">void</span><span style="color: #000000;"> showDialog(String mess)
{
</span><span style="color: #0000ff;">new</span><span style="color: #000000;"> AlertDialog.Builder(PhotoUpload.</span><span style="color: #0000ff;">this</span><span style="color: #000000;">).setTitle(</span><span style="color: #000000;">"</span><span style="color: #000000;">Message</span><span style="color: #000000;">"</span><span style="color: #000000;">)
.setMessage(mess)
.setNegativeButton(</span><span style="color: #000000;">"</span><span style="color: #000000;">确定</span><span style="color: #000000;">"</span><span style="color: #000000;">,</span><span style="color: #0000ff;">new</span><span style="color: #000000;"> DialogInterface.OnClickListener()
{
</span><span style="color: #0000ff;">public</span><span style="color: #0000ff;">void</span><span style="color: #000000;"> onClick(DialogInterface dialog, </span><span style="color: #0000ff;">int</span><span style="color: #000000;"> which)
{
}
})
.show();
}
}</span>
来源URL：http://www.cnblogs.com/gzggyy/archive/2011/08/02/2125237.html