Android使用http协议实现文件的上传

     http协议上传文件一般最大是2M，比较适合上传小于两M的文件    <pre class="brush:java; toolbar: true; auto-links: false;">import java.io.File;   import java.io.FileInputStream;   import java.io.FileNotFoundException;   import java.io.InputStream;    /**  * 上传的文件  */   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";   /**   *    * @param filname 文件名称   * @param data 上传的文件数据   * @param parameterName 参数   * @param contentType 内容类型   */   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;   }   /**   *    * @param filname 文件名   * @param file 上传的文件   * @param parameterName 参数   * @param contentType 内容内容类型   */   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;   }      }    /**   * 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:   *   <FORM METHOD=POST ACTION="http://192.168.0.200:8080/ssi/fileload/test.do" enctype="multipart/form-data">   <INPUT TYPE="text" NAME="name">   <INPUT TYPE="text" NAME="id">   <input type="file" name="imagefile"/>   <input type="file" name="zip"/>       </FORM>   * @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.xxx.cn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<String, String> params, FormFile[] files) throws Exception{            final String BOUNDARY = "---------------------------7da2137580612"; //数据分隔线        final String endline = "--" + BOUNDARY + "--\r\n";//数据结束标志               int fileDataLength = 0;       for(FormFile uploadFile : files){//得到文件类型数据的总长度     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;    }       }       StringBuilder textEntity = new StringBuilder();       for (Map.Entry<String, String> entry : params.entrySet()) {//构造文本类型参数的实体数据     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        int dataLength = textEntity.toString().getBytes().length + fileDataLength +  endline.getBytes().length;              URL url = new URL(path);       int port = url.getPort()==-1 ? 80 : url.getPort();       Socket socket = new Socket(InetAddress.getByName(url.getHost()), port);               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());       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());       String language = "Accept-Language: zh-CN\r\n";       outStream.write(language.getBytes());       String contenttype = "Content-Type: multipart/form-data; boundary="+ BOUNDARY+ "\r\n";       outStream.write(contenttype.getBytes());       String contentlength = "Content-Length: "+ dataLength + "\r\n";       outStream.write(contentlength.getBytes());       String alive = "Connection: Keep-Alive\r\n";       outStream.write(alive.getBytes());       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());    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()));       if(reader.readLine().indexOf("200")==-1){//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     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.xxx.cn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<String, String> params, FormFile file) throws Exception{      return post(path, params, new FormFile[]{file});   }  </pre>