android 文件上传（模拟表单提交）
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package irdc.ex08_11;import java.io.BufferedReader;/* import相关class */public class EX08_11 extends Activity{ /* * 变量声明 filename：上传后在服务器上的文件名称 uploadFile：要上传的文件路径 actionUrl：服务器上对应的程序路径 */ private String uploadFile = "/sdcard/mp3/FmChannels.txt"; private String srcPath = "/sdcard/mp3/FmChannels.txt"; private String actionUrl = "http://116.207.170.64:8080/FileUpload/updateUserServlet"; private TextView mText1; private TextView mText2; private Button mButton; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mText1 = (TextView) findViewById(R.id.myText2); mText1.setText("文件路径：\n" + uploadFile); mText2 = (TextView) findViewById(R.id.myText3); mText2.setText("上传网址：\n" + actionUrl); /* 设置mButton的onClick事件处理 */ mButton = (Button) findViewById(R.id.myButton); mButton.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { uploadFile(); } }); } /* 上传文件至Server的方法 */ private void uploadFile() { String uploadUrl = actionUrl; String end = "\r\n"; String twoHyphens = "--"; String boundary = "******"; try { URL url = new URL(uploadUrl); HttpURLConnection httpURLConnection = (HttpURLConnection) url .openConnection(); httpURLConnection.setDoInput(true); httpURLConnection.setDoOutput(true); httpURLConnection.setUseCaches(false); httpURLConnection.setRequestMethod("POST"); httpURLConnection.setRequestProperty("Connection", "Keep-Alive"); httpURLConnection.setRequestProperty("Charset", "UTF-8"); httpURLConnection.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary); DataOutputStream dos = new DataOutputStream(httpURLConnection.getOutputStream()); dos.writeBytes(twoHyphens + boundary + end); dos.writeBytes("Content-Disposition: form-data; name="file"; filename="" + srcPath.substring(srcPath.lastIndexOf("/") + 1) + """ + end); dos.writeBytes(end); //将SD 文件通过输入流读到Java代码中-++++++++++++++++++++++++++++++````````````````````````` FileInputStream fis = new FileInputStream(srcPath); byte[] buffer = new byte[8192]; // 8k int count = 0; while ((count = fis.read(buffer)) != -1) { dos.write(buffer, 0, count); } fis.close(); System.out.println("file send to server............"); dos.writeBytes(end); dos.writeBytes(twoHyphens + boundary + twoHyphens + end); dos.flush(); //读取服务器返回结果 InputStream is = httpURLConnection.getInputStream(); InputStreamReader isr = new InputStreamReader(is, "utf-8"); BufferedReader br = new BufferedReader(isr); String result = br.readLine(); Toast.makeText(this, result, Toast.LENGTH_LONG).show(); dos.close(); is.close(); } catch (Exception e) { e.printStackTrace(); setTitle(e.getMessage()); } }}