网站建设资讯

NEWS

网站建设资讯

android上传图片,Android上传图片怎么做

android中如何上传图片到FTP服务器

android客户端实现FTP文件需要用到 commons-net-3.0.1.jar

创新互联是一家专业提供八宿企业网站建设,专注与网站建设、做网站HTML5、小程序制作等业务。10年已为八宿众多企业、政府机构等服务。创新互联专业网站制作公司优惠进行中。

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;

}

android如何实现图片批量上传??

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});

}

}

android 客户端开发 如何同时上传多张照片

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。


网站题目:android上传图片,Android上传图片怎么做
当前路径:http://cdweb.net/article/dscogsd.html