Java 从android设备向使用REST编写的服务器上的webservice发送文件（图像）
我想将安卓设备上的图像发送到运行在tomcat服务器上的web应用程序。请帮助我编写将图像发送到web服务器上运行的REST web服务的小代码。如果可能的话，请给我提供示例代码。我不知道该用什么方法。任何帮助都将不胜感激。提前谢谢 编辑：这个问题的答案如下Java 从android设备向使用REST编写的服务器上的webservice发送文件（图像）,java,android,web-services,rest,Java,Android,Web Services,Rest,我想将安卓设备上的图像发送到运行在tomcat服务器上的web应用程序。请帮助我编写将图像发送到web服务器上运行的REST web服务的小代码。如果可能的话，请给我提供示例代码。我不知道该用什么方法。任何帮助都将不胜感激。提前谢谢 编辑：这个问题的答案如下 while(it.hasNext()){ File file = new File((new StringBuilder()).append(Environment.getExternalStorageDirect
while(it.hasNext()){
File file = new File((new StringBuilder()).append(Environment.getExternalStorageDirectory()).append(File.separator).append("jcms").append(File.separator).append("Customer_").append( customer.getId()).toString());
File[] listOfFiles = file.listFiles();
for(int i=0;i<listOfFiles.length;i++){
JSONObject message = new JSONObject();
File fil=listOfFiles[i];
FileInputStream imageInFile = new FileInputStream(fil);
byte imageData[] = new byte[(int)fil.length()];
imageInFile.read(imageData);
String imageDataString = encodeImage(imageData);
URL url=new URL(ClearCustomersContract.CLEAR_SERVER_URL);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoOutput(true);
connection.setRequestProperty("Content-Type", "application/json");
connection.setRequestMethod("POST");
connection.setConnectTimeout(5000);
connection.setReadTimeout(5000);
OutputStreamWriter out = new OutputStreamWriter(connection.getOutputStream());
out.write(imageDataString);
out.close();
BufferedReader in = new BufferedReader(new InputStreamReader(
connection.getInputStream()));
while (in.readLine() != null) {
}
in.close();
}
}
您可以使用下面的代码使用RESTWebService上传图像
try {
HttpClient httpClient = new DefaultHttpClient();
HttpContext httpContext = new BasicHttpContext();
HttpPost httpPost = new HttpPost(
"YOUR WEB SERVICE URL");
entity = getMultipleEntityUpload();
httpPost.setEntity(entity);
HttpResponse httpResponse = httpClient.execute(httpPost,
httpContext);
HttpEntity httpEntity = httpResponse.getEntity();
InputStream is = httpEntity.getContent();
String line = "";
StringBuilder total = new StringBuilder();
BufferedReader rd = new BufferedReader(new InputStreamReader(
is));
while ((line = rd.readLine()) != null) {
total.append(line);
}
String result =total.toString();
} catch (Exception e) {
// TODO: handle exception
}
private MultipartEntity getMultipleEntityUpload() {
MultipartEntity entity = new MultipartEntity(
HttpMultipartMode.BROWSER_COMPATIBLE);
try {
ByteArrayOutputStream stream = new ByteArrayOutputStream();
//imagePic is bitmap of your image
imagePic.compress(Bitmap.CompressFormat.JPEG, 100, stream);
byte[] arrByteImage = stream.toByteArray();
try {
entity.addPart(WS_Key_Constant.KEY_IMAGE, new ByteArrayBody(
arrByteImage, ".jpg"));
} catch (Exception e) {
}
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
return entity;
}
public class HttpFileUpload implements Runnable{
URL connectURL;
String responseString;
String Title;
String Description;
byte[ ] dataToServer;
FileInputStream fileInputStream = null;
HttpFileUpload(String urlString, String vTitle, String vDesc){
try{
connectURL = new URL(urlString);
Title= vTitle;
Description = vDesc;
}catch(Exception ex){
Log.i("HttpFileUpload","URL Malformatted");
}
}
void Send_Now(FileInputStream fStream){
fileInputStream = fStream;
Sending();
}
void Sending(){
String iFileName = "ovicam_temp_vid.mp4";
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
String Tag="fSnd";
try
{
Log.e(Tag,"Starting Http File Sending to URL");
// Open a HTTP connection to the URL
HttpURLConnection conn = (HttpURLConnection)connectURL.openConnection();
// Allow Inputs
conn.setDoInput(true);
// Allow Outputs
conn.setDoOutput(true);
// Don't use a cached copy.
conn.setUseCaches(false);
// Use a post method.
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("Content-Type", "multipart/form-data;boundary="+boundary);
DataOutputStream dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"title\""+ lineEnd);
dos.writeBytes(lineEnd);
dos.writeBytes(Title);
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"description\""+ lineEnd);
dos.writeBytes(lineEnd);
dos.writeBytes(Description);
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\"" + iFileName +"\"" + lineEnd);
dos.writeBytes(lineEnd);
Log.e(Tag,"Headers are written");
// create a buffer of maximum size
int bytesAvailable = fileInputStream.available();
int maxBufferSize = 1024;
int bufferSize = Math.min(bytesAvailable, maxBufferSize);
byte[ ] buffer = new byte[bufferSize];
// read file and write it into form...
int bytesRead = fileInputStream.read(buffer, 0, bufferSize);
while (bytesRead > 0)
{
dos.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable,maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0,bufferSize);
}
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
// close streams
fileInputStream.close();
dos.flush();
Log.e(Tag,"File Sent, Response: "+String.valueOf(conn.getResponseCode()));
InputStream is = conn.getInputStream();
// retrieve the response from server
int ch;
StringBuffer b =new StringBuffer();
while( ( ch = is.read() ) != -1 ){ b.append( (char)ch ); }
String s=b.toString();
Log.i("Response",s);
dos.close();
}
catch (MalformedURLException ex)
{
Log.e(Tag, "URL error: " + ex.getMessage(), ex);
}
catch (IOException ioe)
{
Log.e(Tag, "IO error: " + ioe.getMessage(), ioe);
}
}
@Override
public void run() {
// TODO Auto-generated method stub
}
}
public void UploadFile(){
try {
// Set your file path here
FileInputStream fstrm = new FileInputStream(Environment.getExternalStorageDirectory().toString()+"/DCIM/file.mp4");
// Set your server page url (and the file title/description)
HttpFileUpload hfu = new HttpFileUpload("http://www.myurl.com/fileup.aspx", "my file title","my file description");
hfu.Send_Now(fstrm);
} catch (FileNotFoundException e) {
// Error: File not found
}
}
嗨，拉维，谢谢你的回复。另外，你能给我一个在服务器端接受此流的Web服务的模板吗？对不起，伙计，我没有那么多关于Web服务的知识可以分享。嗨，Y.S.谢谢你的回复。您可以在服务器端发布webservice模板以接受此请求吗。
try {
HttpClient httpClient = new DefaultHttpClient();
HttpContext httpContext = new BasicHttpContext();
HttpPost httpPost = new HttpPost(
"YOUR WEB SERVICE URL");
entity = getMultipleEntityUpload();
httpPost.setEntity(entity);
HttpResponse httpResponse = httpClient.execute(httpPost,
httpContext);
HttpEntity httpEntity = httpResponse.getEntity();
InputStream is = httpEntity.getContent();
String line = "";
StringBuilder total = new StringBuilder();
BufferedReader rd = new BufferedReader(new InputStreamReader(
is));
while ((line = rd.readLine()) != null) {
total.append(line);
}
String result =total.toString();
} catch (Exception e) {
// TODO: handle exception
}
private MultipartEntity getMultipleEntityUpload() {
MultipartEntity entity = new MultipartEntity(
HttpMultipartMode.BROWSER_COMPATIBLE);
try {
ByteArrayOutputStream stream = new ByteArrayOutputStream();
//imagePic is bitmap of your image
imagePic.compress(Bitmap.CompressFormat.JPEG, 100, stream);
byte[] arrByteImage = stream.toByteArray();
try {
entity.addPart(WS_Key_Constant.KEY_IMAGE, new ByteArrayBody(
arrByteImage, ".jpg"));
} catch (Exception e) {
}
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
return entity;
}
public class HttpFileUpload implements Runnable{
URL connectURL;
String responseString;
String Title;
String Description;
byte[ ] dataToServer;
FileInputStream fileInputStream = null;
HttpFileUpload(String urlString, String vTitle, String vDesc){
try{
connectURL = new URL(urlString);
Title= vTitle;
Description = vDesc;
}catch(Exception ex){
Log.i("HttpFileUpload","URL Malformatted");
}
}
void Send_Now(FileInputStream fStream){
fileInputStream = fStream;
Sending();
}
void Sending(){
String iFileName = "ovicam_temp_vid.mp4";
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
String Tag="fSnd";
try
{
Log.e(Tag,"Starting Http File Sending to URL");
// Open a HTTP connection to the URL
HttpURLConnection conn = (HttpURLConnection)connectURL.openConnection();
// Allow Inputs
conn.setDoInput(true);
// Allow Outputs
conn.setDoOutput(true);
// Don't use a cached copy.
conn.setUseCaches(false);
// Use a post method.
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("Content-Type", "multipart/form-data;boundary="+boundary);
DataOutputStream dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"title\""+ lineEnd);
dos.writeBytes(lineEnd);
dos.writeBytes(Title);
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"description\""+ lineEnd);
dos.writeBytes(lineEnd);
dos.writeBytes(Description);
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\"" + iFileName +"\"" + lineEnd);
dos.writeBytes(lineEnd);
Log.e(Tag,"Headers are written");
// create a buffer of maximum size
int bytesAvailable = fileInputStream.available();
int maxBufferSize = 1024;
int bufferSize = Math.min(bytesAvailable, maxBufferSize);
byte[ ] buffer = new byte[bufferSize];
// read file and write it into form...
int bytesRead = fileInputStream.read(buffer, 0, bufferSize);
while (bytesRead > 0)
{
dos.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable,maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0,bufferSize);
}
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
// close streams
fileInputStream.close();
dos.flush();
Log.e(Tag,"File Sent, Response: "+String.valueOf(conn.getResponseCode()));
InputStream is = conn.getInputStream();
// retrieve the response from server
int ch;
StringBuffer b =new StringBuffer();
while( ( ch = is.read() ) != -1 ){ b.append( (char)ch ); }
String s=b.toString();
Log.i("Response",s);
dos.close();
}
catch (MalformedURLException ex)
{
Log.e(Tag, "URL error: " + ex.getMessage(), ex);
}
catch (IOException ioe)
{
Log.e(Tag, "IO error: " + ioe.getMessage(), ioe);
}
}
@Override
public void run() {
// TODO Auto-generated method stub
}
}
public void UploadFile(){
try {
// Set your file path here
FileInputStream fstrm = new FileInputStream(Environment.getExternalStorageDirectory().toString()+"/DCIM/file.mp4");
// Set your server page url (and the file title/description)
HttpFileUpload hfu = new HttpFileUpload("http://www.myurl.com/fileup.aspx", "my file title","my file description");
hfu.Send_Now(fstrm);
} catch (FileNotFoundException e) {
// Error: File not found
}
}