Android使用http协议实现文件的上传

 

import java.io.File;

002	import java.io.FileInputStream;

 

004	import java.io.InputStream;

003 import java.io.FileNotFoundException;   05

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(new InputStreamReader(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

}