如何上传图片到图片服务器

使用一些已有的组件帮助我们实现这种上传功能。常用的上传组件：Apache 的 Commons FileUploadJavaZoom的UploadBeanjspSmartUpload以下，以FileUpload为例讲解1、在jsp端<form id="form1" name="form1" method="post" action="servlet/fileServlet" enctype="multipart/form-data">要注意enctype="multipart/form-data"然后只需要放置一个file控件，并执行submit操作即可<input name="file" type="file" size="20" ><input type="submit" name="submit" value="提交" >2、web端核心代码如下：public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { request.setCharacterEncoding("UTF-8") 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()) System.out.println("上传文件的名称:" + item.getName()) File tempFile = new File(item.getName()) 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客户端实现FTP文件需要用到 commons-net-3.0.1.jar

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

}

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