Android基于Http协议实现文件上传功能的方法

本文实例讲述了Android基于Http协议实现文件上传功能的方法。分享给大家供大家参考，具体如下：

注意一般使用Http协议上传的文件都比较小，一般是小于2M

这里示例是上传一个小的MP3文件

1.主Activity：MainActivity.java

public class MainActivity extends Activity{  private static final String TAG = "MainActivity";  private EditText timelengthText;  private EditText titleText;  private EditText videoText;  @Override  public void onCreate(Bundle savedInstanceState)  {    super.onCreate(savedInstanceState);    setContentView(R.layout.main);    //提交上传按钮    Button button = (Button) this.findViewById(R.id.button);    timelengthText = (EditText) this.findViewById(R.id.timelength);    videoText = (EditText) this.findViewById(R.id.video);    titleText = (EditText) this.findViewById(R.id.title);    button.setOnClickListener(new View.OnClickListener()    {      @Override      public void onClick(View v)      {        String title = titleText.getText().toString();        String timelength = timelengthText.getText().toString();        Map params = new HashMap();        params.put("method", "save");        params.put("title", title);        params.put("timelength", timelength);        try        {          //得到SDCard的目录          File uploadFile = new File(Environment.getExternalStorageDirectory(), videoText.getText().toString());          //上传音频文件          FormFile formfile = new FormFile("02.mp3", uploadFile, "video", "audio/mpeg");          SocketHttpRequester.post("http://192.168.1.100:8080/videoweb/video/manage.do", params, formfile);          Toast.makeText(MainActivity.this, R.string.success, 1).show();        }        catch (Exception e)        {          Toast.makeText(MainActivity.this, R.string.error, 1).show();          Log.e(TAG, e.toString());        }      }    });  }}

2.上传工具类，注意里面构造协议字符串需要根据不同的提交表单来处理

public class SocketHttpRequester{  /**   * 发送xml数据   * @param path 请求地址   * @param xml xml数据   * @param encoding 编码   * @return   * @throws Exception   */  public static byte[] postXml(String path, String xml, String encoding) throws Exception{    byte[] data = xml.getBytes(encoding);    URL url = new URL(path);    HttpURLConnection conn = (HttpURLConnection)url.openConnection();    conn.setRequestMethod("POST");    conn.setDoOutput(true);    conn.setRequestProperty("Content-Type", "text/xml; charset="+ encoding);    conn.setRequestProperty("Content-Length", String.valueOf(data.length));    conn.setConnectTimeout(5 * 1000);    OutputStream outStream = conn.getOutputStream();    outStream.write(data);    outStream.flush();    outStream.close();    if(conn.getResponseCode()==200){      return readStream(conn.getInputStream());    }    return null;  }  /**   * 直接通过HTTP协议提交数据到服务器,实现如下面表单提交功能:   *                               
   * @param path 上传路径(注：避免使用localhost或127.0.0.1这样的路径测试，   *         因为它会指向手机模拟器，你可以使用http://www.baidu.com或http://192.168.1.10:8080这样的路径测试)   * @param params 请求参数 key为参数名,value为参数值   * @param file 上传文件   */  public static boolean post(String path, Map params, FormFile[] files) throws Exception  {    //数据分隔线    final String BOUNDARY = "---------------------------7da2137580612";    //数据结束标志"---------------------------7da2137580612--"    final String endline = "--" + BOUNDARY + "--/r/n";    //下面两个for循环都是为了得到数据长度参数，依据表单的类型而定    //首先得到文件类型数据的总长度(包括文件分割线)    int fileDataLength = 0;    for(FormFile uploadFile : files)    {      StringBuilder fileExplain = new StringBuilder();      fileExplain.append("--");      fileExplain.append(BOUNDARY);      fileExplain.append("/r/n");      fileExplain.append("Content-Disposition: form-data;name=/""+ uploadFile.getParameterName()+"/";filename=/""+ uploadFile.getFilname() + "/"/r/n");      fileExplain.append("Content-Type: "+ uploadFile.getContentType()+"/r/n/r/n");      fileExplain.append("/r/n");      fileDataLength += fileExplain.length();      if(uploadFile.getInStream()!=null){        fileDataLength += uploadFile.getFile().length();      }else{        fileDataLength += uploadFile.getData().length;      }    }    //再构造文本类型参数的实体数据    StringBuilder textEntity = new StringBuilder();    for (Map.Entry entry : params.entrySet())    {      textEntity.append("--");      textEntity.append(BOUNDARY);      textEntity.append("/r/n");      textEntity.append("Content-Disposition: form-data; name=/""+ entry.getKey() + "/"/r/n/r/n");      textEntity.append(entry.getValue());      textEntity.append("/r/n");    }    //计算传输给服务器的实体数据总长度(文本总长度+数据总长度+分隔符)    int dataLength = textEntity.toString().getBytes().length + fileDataLength + endline.getBytes().length;    URL url = new URL(path);    //默认端口号其实可以不写    int port = url.getPort()==-1 ? 80 : url.getPort();    //建立一个Socket链接    Socket socket = new Socket(InetAddress.getByName(url.getHost()), port);    //获得一个输出流（从Android流到web）    OutputStream outStream = socket.getOutputStream();    //下面完成HTTP请求头的发送    String requestmethod = "POST "+ url.getPath()+" HTTP/1.1/r/n";    outStream.write(requestmethod.getBytes());    //构建accept    String accept = "Accept: image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/x-shockwave-flash, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-application, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*/r/n";    outStream.write(accept.getBytes());    //构建language    String language = "Accept-Language: zh-CN/r/n";    outStream.write(language.getBytes());    //构建contenttype    String contenttype = "Content-Type: multipart/form-data; boundary="+ BOUNDARY+ "/r/n";    outStream.write(contenttype.getBytes());    //构建contentlength    String contentlength = "Content-Length: "+ dataLength + "/r/n";    outStream.write(contentlength.getBytes());    //构建alive    String alive = "Connection: Keep-Alive/r/n";    outStream.write(alive.getBytes());    //构建host    String host = "Host: "+ url.getHost() +":"+ port +"/r/n";    outStream.write(host.getBytes());    //写完HTTP请求头后根据HTTP协议再写一个回车换行    outStream.write("/r/n".getBytes());    //把所有文本类型的实体数据发送出来    outStream.write(textEntity.toString().getBytes());    //把所有文件类型的实体数据发送出来    for(FormFile uploadFile : files)    {      StringBuilder fileEntity = new StringBuilder();      fileEntity.append("--");      fileEntity.append(BOUNDARY);      fileEntity.append("/r/n");      fileEntity.append("Content-Disposition: form-data;name=/""+ uploadFile.getParameterName()+"/";filename=/""+ uploadFile.getFilname() + "/"/r/n");      fileEntity.append("Content-Type: "+ uploadFile.getContentType()+"/r/n/r/n");      outStream.write(fileEntity.toString().getBytes());      //边读边写      if(uploadFile.getInStream()!=null)      {        byte[] buffer = new byte[1024];        int len = 0;        while((len = uploadFile.getInStream().read(buffer, 0, 1024))!=-1)        {          outStream.write(buffer, 0, len);        }        uploadFile.getInStream().close();      }      else      {        outStream.write(uploadFile.getData(), 0, uploadFile.getData().length);      }      outStream.write("/r/n".getBytes());    }    //下面发送数据结束标志，表示数据已经结束    outStream.write(endline.getBytes());    BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));    //读取web服务器返回的数据，判断请求码是否为200，如果不是200，代表请求失败    if(reader.readLine().indexOf("200")==-1)    {      return false;    }    outStream.flush();    outStream.close();    reader.close();    socket.close();    return true;  }  /**   * 提交数据到服务器   * @param path 上传路径(注：避免使用localhost或127.0.0.1这样的路径测试，因为它会指向手机模拟器，你可以使用http://www.baidu.com或http://192.168.1.10:8080这样的路径测试)   * @param params 请求参数 key为参数名,value为参数值   * @param file 上传文件   */  public static boolean post(String path, Map params, FormFile file) throws Exception  {    return post(path, params, new FormFile[]{file});  }  /**   * 提交数据到服务器   * @param path 上传路径(注：避免使用localhost或127.0.0.1这样的路径测试，因为它会指向手机模拟器，你可以使用http://www.baidu.com或http://192.168.1.10:8080这样的路径测试)   * @param params 请求参数 key为参数名,value为参数值   * @param encode 编码   */  public static byte[] postFromHttpClient(String path, Map params, String encode) throws Exception  {    //用于存放请求参数    List formparams = new ArrayList();    for(Map.Entry entry : params.entrySet())    {      formparams.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));    }    UrlEncodedFormEntity entity = new UrlEncodedFormEntity(formparams, encode);    HttpPost httppost = new HttpPost(path);    httppost.setEntity(entity);    //看作是浏览器    HttpClient httpclient = new DefaultHttpClient();    //发送post请求    HttpResponse response = httpclient.execute(httppost);    return readStream(response.getEntity().getContent());  }  /**   * 发送请求   * @param path 请求路径   * @param params 请求参数 key为参数名称 value为参数值   * @param encode 请求参数的编码   */  public static byte[] post(String path, Map params, String encode) throws Exception  {    //String params = "method=save&name="+ URLEncoder.encode("老毕", "UTF-8")+ "&age=28&";//需要发送的参数    StringBuilder parambuilder = new StringBuilder("");    if(params!=null && !params.isEmpty())    {      for(Map.Entry entry : params.entrySet())      {        parambuilder.append(entry.getKey()).append("=")          .append(URLEncoder.encode(entry.getValue(), encode)).append("&");      }      parambuilder.deleteCharAt(parambuilder.length()-1);    }    byte[] data = parambuilder.toString().getBytes();    URL url = new URL(path);    HttpURLConnection conn = (HttpURLConnection)url.openConnection();    //设置允许对外发送请求参数    conn.setDoOutput(true);    //设置不进行缓存    conn.setUseCaches(false);    conn.setConnectTimeout(5 * 1000);    conn.setRequestMethod("POST");    //下面设置http请求头    conn.setRequestProperty("Accept", "image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/x-shockwave-flash, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-application, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*");    conn.setRequestProperty("Accept-Language", "zh-CN");    conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.2; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)");    conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");    conn.setRequestProperty("Content-Length", String.valueOf(data.length));    conn.setRequestProperty("Connection", "Keep-Alive");    //发送参数    DataOutputStream outStream = new DataOutputStream(conn.getOutputStream());    outStream.write(data);//把参数发送出去    outStream.flush();    outStream.close();    if(conn.getResponseCode()==200)    {      return readStream(conn.getInputStream());    }    return null;  }  /**   * 读取流   * @param inStream   * @return 字节数组   * @throws Exception   */  public static byte[] readStream(InputStream inStream) throws Exception  {    ByteArrayOutputStream outSteam = new ByteArrayOutputStream();    byte[] buffer = new byte[1024];    int len = -1;    while( (len=inStream.read(buffer)) != -1)    {      outSteam.write(buffer, 0, len);    }    outSteam.close();    inStream.close();    return outSteam.toByteArray();  }}public class StreamTool{  /**   * 从输入流读取数据   * @param inStream   * @return   * @throws Exception   */  public static byte[] readInputStream(InputStream inStream) throws Exception{    ByteArrayOutputStream outSteam = new ByteArrayOutputStream();    byte[] buffer = new byte[1024];    int len = 0;    while( (len = inStream.read(buffer)) !=-1 ){      outSteam.write(buffer, 0, len);    }    outSteam.close();    inStream.close();    return outSteam.toByteArray();  }}/** * 使用JavaBean封装上传文件数据 * */public class FormFile{  //上传文件的数据  private byte[] data;  private InputStream inStream;  private File file;  //文件名称  private String filname;  //请求参数名称  private String parameterName;  //内容类型  private String contentType = "application/octet-stream";  /**   * 上传小文件，把文件数据先读入内存   * @param filname   * @param data   * @param parameterName   * @param contentType   */  public FormFile(String filname, byte[] data, String parameterName, String contentType)  {    this.data = data;    this.filname = filname;    this.parameterName = parameterName;    if(contentType!=null) this.contentType = contentType;  }  /**   * 上传大文件，一边读文件数据一边上传   * @param filname   * @param file   * @param parameterName   * @param contentType   */  public FormFile(String filname, File file, String parameterName, String contentType)  {    this.filname = filname;    this.parameterName = parameterName;    this.file = file;    try    {      this.inStream = new FileInputStream(file);    }    catch (FileNotFoundException e)    {      e.printStackTrace();    }    if(contentType!=null) this.contentType = contentType;  }  public File getFile()  {    return file;  }  public InputStream getInStream()  {    return inStream;  }  public byte[] getData()  {    return data;  }  public String getFilname()  {    return filname;  }  public void setFilname(String filname)  {    this.filname = filname;  }  public String getParameterName()  {    return parameterName;  }  public void setParameterName(String parameterName)  {    this.parameterName = parameterName;  }  public String getContentType()  {    return contentType;  }  public void setContentType(String contentType)  {    this.contentType = contentType;  }}

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