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 }