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android客户端实现FTP文件需要用到 commons-net-3.0.1.jar
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先将jar包复制到android libs目录下
复制以下实现代码
以下为实现代码:
/**
* 通过ftp上传文件
* @param url ftp服务器地址 如:
* @param port 端口如 :
* @param username 登录名
* @param password 密码
* @param remotePath 上到ftp服务器的磁盘路径
* @param fileNamePath 要上传的文件路径
* @param fileName 要上传的文件名
* @return
*/
public String ftpUpload(String url, String port, String username,String password, String remotePath, String fileNamePath,String fileName) {
FTPClient ftpClient = new FTPClient();
FileInputStream fis = null;
String returnMessage = "0";
try {
ftpClient.connect(url, Integer.parseInt(port));
boolean loginResult = ftpClient.login(username, password);
int returnCode = ftpClient.getReplyCode();
if (loginResult FTPReply.isPositiveCompletion(returnCode)) {// 如果登录成功
ftpClient.makeDirectory(remotePath);
// 设置上传目录
ftpClient.changeWorkingDirectory(remotePath);
ftpClient.setBufferSize(1024);
ftpClient.setControlEncoding("UTF-8");
ftpClient.enterLocalPassiveMode();
fis = new FileInputStream(fileNamePath + fileName);
ftpClient.storeFile(fileName, fis);
returnMessage = "1"; //上传成功
} else {// 如果登录失败
returnMessage = "0";
}
} catch (IOException e) {
e.printStackTrace();
throw new RuntimeException("FTP客户端出错!", e);
} finally {
//IOUtils.closeQuietly(fis);
try {
ftpClient.disconnect();
} catch (IOException e) {
e.printStackTrace();
throw new RuntimeException("关闭FTP连接发生异常!", e);
}
}
return returnMessage;
}
首先,以下架构下的批量文件上传可能会失败或者不会成功:
1.android客户端+springMVC服务端:服务端采用org.springframework.web.multipart.MultipartHttpServletRequest作为批量上传接收类,这种搭配下的批量文件上传会失败,最终服务端只会接受到一个文件,即只会接受到第一个文件。可能因为MultipartHttpServletRequest对servlet原本的HttpServletRequest类进行封装,导致批量上传有问题。
2.android客户端+strutsMVC服务端:
上传成功的方案:
采用android客户端+Servlet(HttpServletRequest)进行文件上传。
Servlet端代码如下:
[java] view plaincopyprint?
DiskFileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
try
{
List items = upload.parseRequest(request);
Iterator itr = items.iterator();
while (itr.hasNext())
{
FileItem item = (FileItem) itr.next();
if (item.isFormField())
{
System.out.println("表单参数名:" + item.getFieldName() + ",表单参数值:" + item.getString("UTF-8"));
}
else
{
if (item.getName() != null !item.getName().equals(""))
{
System.out.println("上传文件的大小:" + item.getSize());
System.out.println("上传文件的类型:" + item.getContentType());
// item.getName()返回上传文件在客户端的完整路径名称
System.out.println("上传文件的名称:" + item.getName());
File tempFile = new File(item.getName());
// 上传文件的保存路径
File file = new File(sc.getRealPath("/") + savePath, tempFile.getName());
item.write(file);
request.setAttribute("upload.message", "上传文件成功!");
} else
{
request.setAttribute("upload.message", "没有选择上传文件!");
}
}
}
}
catch (FileUploadException e)
{
e.printStackTrace();
}
catch (Exception e)
{
e.printStackTrace();
request.setAttribute("upload.message", "上传文件失败!");
}
request.getRequestDispatcher("/uploadResult.jsp").forward(request, response);
android端代码如下:
[java] view plaincopyprint?
public class SocketHttpRequester {
/**
*多文件上传
* 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="" 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,你可以使用或这样的路径测试)
* @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, MapString, 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.EntryString, 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
int dataLength = textEntity.toString().getBytes().length + fileDataLength + endline.getBytes().length;
URL url = new URL(path);
int port = url.getPort()==-1 ? 80 : url.getPort();
Socket socket = new Socket(InetAddress.getByName(url.getHost()), port);
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());
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;
}
/**
*单文件上传
* 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,你可以使用或这样的路径测试)
* @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, MapString, String params, FormFile file) throws Exception{
return post(path, params, new FormFile[]{file});
}
}
1、在微博页面点击左上角发布按钮后,点击“照相机”标识或“图片”标识;
2、选择图片进行上传,选定后点击右下角的绿色“确认”按钮
3、多图上传最多支持9张图片,如果还需添加可点击“十”字继续选择上传,如果添加完毕可点击右上角的蓝色“发布”即可。