通过Http协议实现文件上传

先创建一个测试的JavaBean，定义需要的属性，并生成相应的Set和Get方法。该JavaBean还包含两个构造方法

具体使用请注意阅读注释

 

import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.InputStream;/** * 上传文件 * FormFile 该JavaBean用来封装上传文件的数据 */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";/*下面是两个构造函数，主要用于大小不同的文件的上传*///该构造器适用于文件小于1M，把数据全部转换为二进制，放到手机内存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;}//大文件用输入、输出流进行边读取边上传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;}}

 

下面这个类，是利用Http协议上传的工具类

 

import java.io.BufferedReader;import java.io.ByteArrayOutputStream;import java.io.DataOutputStream;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.net.HttpURLConnection;import java.net.InetAddress;import java.net.Socket;import java.net.URL;import java.net.URLEncoder;import java.util.ArrayList;import java.util.List;import java.util.Map;import org.apache.http.HttpResponse;import org.apache.http.NameValuePair;import org.apache.http.client.HttpClient;import org.apache.http.client.entity.UrlEncodedFormEntity;import org.apache.http.client.methods.HttpPost;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.message.BasicNameValuePair;/** * 通过Http协议上传文件，适用于2M大小以内的文件，如果是视频等大文件应采用其他方法 * 如果上传文本内容，可直接使用Post提交，该类主要是用于上传小文件 */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: * <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"); 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 endline（最后的结束线） int dataLength = textEntity.toString().getBytes().length + fileDataLength + endline.getBytes().length; URL url = new URL(path);//得到端口号，如果是-1 就用80，否则取得端口号 int port = url.getPort()==-1 ? 80 : url.getPort();//创建一个Socket，链接到服务器的某一个端口，如80端口 Socket socket = new Socket(InetAddress.getByName(url.getHost()), port); //数据由Android应用传到服务器，所以构建输出流 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());//完成第二个协议头的数据，可省略 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());//内容的长度 String contentlength = "Content-Length: "+ dataLength + "/r/n"; outStream.write(contentlength.getBytes());//Connection请求头 String alive = "Connection: Keep-Alive/r/n"; outStream.write(alive.getBytes());//Host请求头，末尾"/r/n" 是回车换行符 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();//分割线前面多了两个--符号，加进来，都是从http协议参考过来的 fileEntity.append("--"); fileEntity.append(BOUNDARY);//回车换行符 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());//先判断文件有没有输入流，以便确定调用哪个构造方法（该JavaBean里有两个构造方法） 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{//否则代表是以二进制数据传进来的，调用下面的处理方法 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，此时服务器会给客户端返回一个响应信息 outStream.write(endline.getBytes()); //从服务端读取响应状态，所以是InputStream BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));//返回的信息，第一行就包含状态 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();}}

 

调用时可以这样写，仅供参考，这里是通过触发一个Button事件调用：

 

button.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {String title = titleText.getText().toString();String timelength = timelengthText.getText().toString();//通过Map构造器传参Map<String, String> params = new HashMap<String, String>();params.put("method", "save");params.put("title", title);params.put("timelength", timelength);try {//取得上传文件的名称File uploadFile = new File(Environment.getExternalStorageDirectory(), videoText.getText().toString());//文件上传JavaBean ，通过New调用构造方法（此处是调用第二个构造函数，以输入、输出流上传），audio/mpeg为Mp3文件的内容类型//如果不知道上传文件的内容类型，可以在IE浏览器上传一个文件测试，在后台观察源码（通过HttpWatch）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());}}});