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
[代码] [Java]代码
001 import java.io.File;
002 import java.io.FileInputStream;
003 import java.io.FileNotFoundException;
004 import java.io.InputStream;
005
006 /**
007 * 上传的文件
008 */
009 public class FormFile {
010 /** 上传文件的数据 */
011 private byte[] data;
012 private InputStream inStream;
013 private File file;
014 /** 文件名称 */
015 private String filname;
016 /** 请求参数名称*/
017 private String parameterName;
018 /** 内容类型 */
019 private String contentType = "application/octet-stream";
020 /**
021 *
022 * @param filname 文件名称
023 * @param data 上传的文件数据
024 * @param parameterName 参数
025 * @param contentType 内容类型
026 */
027 public FormFile(String filname, byte[] data, String parameterName, String contentType) {
028 this.data = data;
029 this.filname = filname;
030 this.parameterName = parameterName;
031 if(contentType!=null) this.contentType = contentType;
032 }
033 /**
034 *
035 * @param filname 文件名
036 * @param file 上传的文件
037 * @param parameterName 参数
038 * @param contentType 内容内容类型
039 */
040 public FormFile(String filname, File file, String parameterName, String contentType) {
041 this.filname = filname;
042 this.parameterName = parameterName;
043 this.file = file;
044 try {
045 this.inStream = new FileInputStream(file);
046 } catch (FileNotFoundException e) {
047 e.printStackTrace();
048 }
049 if(contentType!=null) this.contentType = contentType;
050 }
051
052 public File getFile() {
053 return file;
054 }
055
056 public InputStream getInStream() {
057 return inStream;
058 }
059
060 public byte[] getData() {
061 return data;
062 }
063
064 public String getFilname() {
065 return filname;
066 }
067
068 public void setFilname(String filname) {
069 this.filname = filname;
070 }
071
072 public String getParameterName() {
073 return parameterName;
074 }
075
076 public void setParameterName(String parameterName) {
077 this.parameterName = parameterName;
078 }
079
080 public String getContentType() {
081 return contentType;
082 }
083
084 public void setContentType(String contentType) {
085 this.contentType = contentType;
086 }
087
088 }
089
090 /**
091 * 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:
092 * <FORM METHOD=POST ACTION="http://192.168.0.200:8080/ssi/fileload/test.do" enctype="multipart/form-data">
093 <INPUT TYPE="text" NAME="name">
094 <INPUT TYPE="text" NAME="id">
095 <input type="file" name="imagefile"/>
096 <input type="file" name="zip"/>
097 </FORM>
098 * @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)
099 * @param params 请求参数 key为参数名,value为参数值
100 * @param file 上传文件
101 */
102 public static boolean post(String path, Map<String, String> params, FormFile[] files) throws Exception{
103 final String BOUNDARY = "---------------------------7da2137580612"; //数据分隔线
104 final String endline = "--" + BOUNDARY + "--\r\n";//数据结束标志
105
106 int fileDataLength = 0;
107 for(FormFile uploadFile : files){//得到文件类型数据的总长度
108 StringBuilder fileExplain = new StringBuilder();
109 fileExplain.append("--");
110 fileExplain.append(BOUNDARY);
111 fileExplain.append("\r\n");
112 fileExplain.append("Content-Disposition: form-data;name=\""+ uploadFile.getParameterName()+"\";filename=\""+ uploadFile.getFilname() + "\"\r\n");
113 fileExplain.append("Content-Type: "+ uploadFile.getContentType()+"\r\n\r\n");
114 fileExplain.append("\r\n");
115 fileDataLength += fileExplain.length();
116 if(uploadFile.getInStream()!=null){
117 fileDataLength += uploadFile.getFile().length();
118 }else{
119 fileDataLength += uploadFile.getData().length;
120 }
121 }
122 StringBuilder textEntity = new StringBuilder();
123 for (Map.Entry<String, String> entry : params.entrySet()) {//构造文本类型参数的实体数据
124 textEntity.append("--");
125 textEntity.append(BOUNDARY);
126 textEntity.append("\r\n");
127 textEntity.append("Content-Disposition: form-data; name=\""+ entry.getKey() + "\"\r\n\r\n");
128 textEntity.append(entry.getValue());
129 textEntity.append("\r\n");
130 }
131 //计算传输给服务器的实体数据总长度
132 int dataLength = textEntity.toString().getBytes().length + fileDataLength + endline.getBytes().length;
133
134 URL url = new URL(path);
135 int port = url.getPort()==-1 ? 80 : url.getPort();
136 Socket socket = new Socket(InetAddress.getByName(url.getHost()), port);
137 OutputStream outStream = socket.getOutputStream();
138 //下面完成HTTP请求头的发送
139 String requestmethod = "POST "+ url.getPath()+" HTTP/1.1\r\n";
140 outStream.write(requestmethod.getBytes());
141 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";
142 outStream.write(accept.getBytes());
143 String language = "Accept-Language: zh-CN\r\n";
144 outStream.write(language.getBytes());
145 String contenttype = "Content-Type: multipart/form-data; boundary="+ BOUNDARY+ "\r\n";
146 outStream.write(contenttype.getBytes());
147 String contentlength = "Content-Length: "+ dataLength + "\r\n";
148 outStream.write(contentlength.getBytes());
149 String alive = "Connection: Keep-Alive\r\n";
150 outStream.write(alive.getBytes());
151 String host = "Host: "+ url.getHost() +":"+ port +"\r\n";
152 outStream.write(host.getBytes());
153 //写完HTTP请求头后根据HTTP协议再写一个回车换行
154 outStream.write("\r\n".getBytes());
155 //把所有文本类型的实体数据发送出来
156 outStream.write(textEntity.toString().getBytes());
157 //把所有文件类型的实体数据发送出来
158 for(FormFile uploadFile : files){
159 StringBuilder fileEntity = new StringBuilder();
160 fileEntity.append("--");
161 fileEntity.append(BOUNDARY);
162 fileEntity.append("\r\n");
163 fileEntity.append("Content-Disposition: form-data;name=\""+ uploadFile.getParameterName()+"\";filename=\""+ uploadFile.getFilname() + "\"\r\n");
164 fileEntity.append("Content-Type: "+ uploadFile.getContentType()+"\r\n\r\n");
165 outStream.write(fileEntity.toString().getBytes());
166 if(uploadFile.getInStream()!=null){
167 byte[] buffer = new byte[1024];
168 int len = 0;
169 while((len = uploadFile.getInStream().read(buffer, 0,1024))!=-1){
170 outStream.write(buffer, 0, len);
171 }
172 uploadFile.getInStream().close();
173 }else{
174 outStream.write(uploadFile.getData(), 0, uploadFile.getData().length);
175 }
176 outStream.write("\r\n".getBytes());
177 }
178 //下面发送数据结束标志，表示数据已经结束
179 outStream.write(endline.getBytes());
180
181 BufferedReader reader = new BufferedReader(newInputStreamReader(socket.getInputStream()));
182 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
183 return false;
184 }
185 outStream.flush();
186 outStream.close();
187 reader.close();
188 socket.close();
189 return true;
190 }
191
192 /**
193 * 提交数据到服务器
194 * @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)
195 * @param params 请求参数 key为参数名,value为参数值
196 * @param file 上传文件
197 */
198 public static boolean post(String path, Map<String, String> params, FormFile file) throws Exception{
199 return post(path, params, new FormFile[]{file});
200 }
