通过http协议向web上传文件
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一、通过edtitext获得要添加的文件名字，在FormFile构造方法中获得该文件输入流，
public class MainActivity extends Activity { private EditText titleText; private EditText lengthText; private EditText nameText; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); titleText = (EditText) this.findViewById(R.id.title); lengthText = (EditText) this.findViewById(R.id.timelength); nameText = (EditText) this.findViewById(R.id.filename); } public void save(View v){ String filename = nameText.getText().toString(); String title = titleText.getText().toString(); String length = lengthText.getText().toString(); if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED) || Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED_READ_ONLY) ){ File uploadFile = new File(Environment.getExternalStorageDirectory(), filename); if(uploadFile.exists()){ boolean result = NewsService.save(title, length, uploadFile); if(result){ Toast.makeText(getApplicationContext(), R.string.success, 1).show(); }else{ Toast.makeText(getApplicationContext(), R.string.error, 1).show(); } }else{ Toast.makeText(getApplicationContext(), R.string.filenoexsit, 1).show(); } }else{ boolean result = NewsService.save(title, length); if(result){ Toast.makeText(getApplicationContext(), R.string.success, 1).show(); }else{ Toast.makeText(getApplicationContext(), R.string.error, 1).show(); } } }}调用的save方法，其中的FormFileSocket(uploadFile, "videofile", "image/gif")构造方法添加数据，获得文件输入流，方法 HttpRequester.post(path, params, formFile)是基于Http协议进行文件上传
public static boolean save(String title, String length, File uploadFile) {String path = "http://192.168.0.168:8080/web/ManageServlet";Map<String, String> params = new HashMap<String, String>();params.put("title", title);params.put("timelength", length);FormFile formFile = new FormFile(uploadFile, "videofile", "image/gif");try {return SocketHttpRequester.post(path, params, formFile);} catch (Exception e) {e.printStackTrace();}return false;}上传文件的构造方法
/** * 上传文件 */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";//数据小时使用这个方法，因为需要写入内存空间，而手机内存小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;}//大数据上传public FormFile(File file, String parameterName, String contentType) {this.filname = file.getName();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;}}http协议
public class SocketHttpRequester {/** * 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.itcast.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"); fileDataLength += fileExplain.length(); if(uploadFile.getInStream()!=null){ fileDataLength += uploadFile.getFile().length(); }else{ fileDataLength += uploadFile.getData().length; } fileDataLength += "\r\n".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"); } //没有使用httpconnection类，内部使用了缓冲技术，容易溢出 //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(); //获得端口 Socket socket = new Socket(InetAddress.getByName(url.getHost()), port); //链接的ip 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()); //实现边读边写 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())); 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.itcast.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});}/** * 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.itcast.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 encode 编码 */public static byte[] postFromHttpClient(String path, Map<String, String> params, String encode) throws Exception{List<NameValuePair> formparams = new ArrayList<NameValuePair>();//用于存放请求参数for(Map.Entry<String, String> 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);HttpClient httpclient = new DefaultHttpClient();//看作是浏览器HttpResponse response = httpclient.execute(httppost);//发送post请求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<String, String> 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<String, String> 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();conn.setDoOutput(true);//允许对外发送请求参数conn.setUseCaches(false);//不进行缓存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();}} 0 0
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