Android应用程序可以';t将照片上载到服务器
我想做一个应用程序。它可以实现将手机图片上传到服务器。现在它可以拍照并保存到手机上。但它不能上传到服务器上。如何应对?服务器正在使用tomcat进行设置 Android上传代码:Android应用程序可以';t将照片上载到服务器,android,tomcat,Android,Tomcat,我想做一个应用程序。它可以实现将手机图片上传到服务器。现在它可以拍照并保存到手机上。但它不能上传到服务器上。如何应对?服务器正在使用tomcat进行设置 Android上传代码: import java.io.BufferedReader; import java.io.DataOutputStream; import java.io.FileInputStream; import java.io.InputStream; import java.io.InputStreamReader; im
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
public class uploadActivity extends Activity
{
private Button uploadbutton;
private String uploadFile = Environment.getExternalStorageDirectory().getAbsolutePath()+"/Test.jpg";
private String srcPath = Environment.getExternalStorageDirectory().getAbsolutePath()+"/Test.jpg";
private String actionUrl = "http://192.168.1.105:8080/ATestInternetCameraServlet/";
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_photo);
uploadbutton=(Button)findViewById(R.id.button2);
uploadbutton.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
uploadFile();
}
});
}
private void uploadFile()
{ String uploadUrl = "http://192.168.1.105:8080/ATestInternetCameraServlet/CameraServlet";
String end = "\r\n";
String twoHyphens = "--";
String boundary = "******";
try
{
URL url = new URL(uploadUrl);
HttpURLConnection httpURLConnection = (HttpURLConnection) url
.openConnection();
httpURLConnection.setDoInput(true);
httpURLConnection.setDoOutput(true);
httpURLConnection.setUseCaches(false);
httpURLConnection.setRequestMethod("POST");
httpURLConnection.setRequestProperty("Connection", "Keep-Alive");
httpURLConnection.setRequestProperty("Charset", "UTF-8");
httpURLConnection.setRequestProperty("Content-Type",
"multipart/form-data;boundary=" + boundary);
DataOutputStream dos = new DataOutputStream(httpURLConnection
.getOutputStream());
dos.writeBytes(twoHyphens + boundary + end);
dos
.writeBytes("Content-Disposition: form-data; name=\"file\"; filename=\""
+ srcPath.substring(srcPath.lastIndexOf("/") + 1)
+ "\"" + end);
dos.writeBytes(end);
FileInputStream fis = new FileInputStream(srcPath);
byte[] buffer = new byte[8192]; // 8k
int count = 0;
while ((count = fis.read(buffer)) != -1)
{
dos.write(buffer, 0, count);
}
fis.close();
dos.writeBytes(end);
dos.writeBytes(twoHyphens + boundary + twoHyphens + end);
dos.flush();
InputStream is = httpURLConnection.getInputStream();
InputStreamReader isr = new InputStreamReader(is, "utf-8");
BufferedReader br = new BufferedReader(isr);
String result = br.readLine();
Toast.makeText(this, result, Toast.LENGTH_LONG).show();//
dos.close();
is.close();
} catch (Exception e)
{
e.printStackTrace();
setTitle(e.getMessage());
}
}
}
服务器代码:
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
public class CameraServlet extends HttpServlet
{
protected void service(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException
{
try
{
request.setCharacterEncoding("UTF-8");
response.setContentType("text/html;charset=UTF-8");
PrintWriter out2 = response.getWriter();
FileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
List<FileItem> items = upload.parseRequest(request);
String uploadPath = "d:\\cameraupload\\";
File file = new File(uploadPath);
if (!file.exists())
{
file.mkdir();
}
String filename = "";
InputStream is = null;
for (FileItem item : items)
{
if (item.isFormField())
{
if (item.getFieldName().equals("filename"))
{
if (!item.getString().equals(""))
filename = item.getString("UTF-8");
}
}
else if (item.getName() != null && !item.getName().equals(""))
{
filename = item.getName().substring(
item.getName().lastIndexOf("\\") + 1);
is = item.getInputStream(); // 得到上传文件的InputStream对象
}
}
filename = uploadPath + filename;
if (new File(filename).exists())
{
new File(filename).delete();
}
// Began to upload files
if (!filename.equals(""))
{
// use FileOutputStream to open the upload file in server
FileOutputStream fos2 = new FileOutputStream(filename);
byte[] buffer = new byte[8192];
int count = 0;
// Began to read the upload file in bytes,and input it to server's upload file output stream
while ((count = is.read(buffer)) > 0)
{
fos2.write(buffer, 0, count); // To write the byte stream server files
}
fos2.close(); // close FileOutputStream object
is.close(); // InputStream object
out2.println("file upload success!xii");
}
}
catch (Exception e)
{
}
}
}
导入java.io.File;
导入java.io.FileOutputStream;
导入java.io.IOException;
导入java.io.InputStream;
导入java.io.PrintWriter;
导入java.util.List;
导入javax.servlet.ServletException;
导入javax.servlet.http.HttpServlet;
导入javax.servlet.http.HttpServletRequest;
导入javax.servlet.http.HttpServletResponse;
导入org.apache.commons.fileupload.FileItem;
导入org.apache.commons.fileupload.FileItemFactory;
导入org.apache.commons.fileupload.disk.DiskFileItemFactory;
导入org.apache.commons.fileupload.servlet.ServletFileUpload;
公共类CameraServlet扩展了HttpServlet
{
受保护的无效服务(HttpServletRequest),
HttpServletResponse响应)引发ServletException,IOException
{
尝试
{
setCharacterEncoding(“UTF-8”);
setContentType(“text/html;charset=UTF-8”);
PrintWriter out2=response.getWriter();
FileItemFactory=new DiskFileItemFactory();
ServletFileUpload upload=新的ServletFileUpload(工厂);
列表项=upload.parseRequest(请求);
字符串uploadPath=“d:\\cameraupload\\”;
文件文件=新文件(上传路径);
如果(!file.exists())
{
mkdir()文件;
}
字符串filename=“”;
InputStream=null;
用于(文件项:项)
{
if(item.isFormField())
{
if(item.getFieldName().equals(“文件名”))
{
如果(!item.getString()等于(“”)
filename=item.getString(“UTF-8”);
}
}
else if(item.getName()!=null&!item.getName().equals(“”)
{
filename=item.getName().substring(
item.getName().lastIndexOf(“\\”+1);
is=item.getInputStream();//得到上传文件的输入流对象
}
}
文件名=上传路径+文件名;
if(新文件(文件名).exists())
{
新文件(文件名).delete();
}
//开始上传文件
如果(!filename.equals(“”)
{
//使用FileOutputStream在服务器中打开上载文件
FileOutputStream fos2=新的FileOutputStream(文件名);
字节[]缓冲区=新字节[8192];
整数计数=0;
//开始读取以字节为单位的上载文件,并将其输入服务器的上载文件输出流
而((count=is.read(buffer))>0)
{
write(buffer,0,count);//写入字节流服务器文件
}
fos2.close();//关闭FileOutputStream对象
is.close();//InputStream对象
out2.println(“文件上传成功!xii”);
}
}
捕获(例外e)
{
}
}
}
您有任何错误跟踪吗??我们什么都没发生
要使用httpurlconnection,您需要在开始时更改策略:
ThreadPolicy mThreadPolicy = new ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(mThreadPolicy);
试试这个。只需浏览和链接即可。希望这些将对您的任务有所帮助。尝试一下……添加apache-mime4j-0.6.jar和httpmime-4.0.3.jar libs
File f=new File(exsistingFileName);
HttpClient http = new DefaultHttpClient();
HttpPost post = new HttpPost("http://192.168.1.105:8080/ATestInternetCameraServlet/CameraServlet");
MultipartEntity Mentity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
String url1=exsistingFileName;
String mime;
String extension = MimeTypeMap.getFileExtensionFromUrl(url1);
if (extension != ""&&extension!=null) {
MimeTypeMap mime1 = MimeTypeMap.getSingleton();
mime = mime1.getMimeTypeFromExtension(extension);
}
else
{
String ext = url1.substring((url1.lastIndexOf(".") + 1), url1.length());
MimeTypeMap mime1 = MimeTypeMap.getSingleton();
mime = mime1.getMimeTypeFromExtension(ext);
}
ContentBody cbFile;
if(mime!=null)
cbFile= new FileBody(f,mime);
else
cbFile=new FileBody(f);
Mentity.addPart("file",cbFile);
post.setEntity(Mentity);
HttpResponse response = null;
try {
response = http.execute(post);
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
responseString = new BasicResponseHandler().
handleResponse(response);
} catch (HttpResponseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
HttpEntity entity = response.getEntity();
System.out.println("----------------------------------------");
System.out.println(response.getStatusLine());
if (entity != null) {
System.out.println("Response content length: " + entity.getContentLength());
}
192.168.1.105不是本地网络上的IP地址吗?你确定可以通过你的电话联系到它吗?打开手机浏览器并尝试导航到URL,你能找到它吗 您在上传过程中遇到了什么问题?客户机还是服务器?如果是在客户机上,您会遇到什么错误?还是默默地失败?您是否尝试过制作一个简单的HTML表单并从那里进行上传?如果这是可行的,你知道这是你的Android代码的问题吗 而且,每当我看到有人试图自己实现文件上传时,我都会感到痛苦。我并不是说你的代码是错误的,但与使用第三方库为你提取所有代码相比,你的代码行太多了(因此出错的风险更大)。一个著名且流行的库(如)很好地支持开箱即用的文件上载:
AsyncHttpClient client = new AsyncHttpClient();
String filename = "file.png";
File myFile = new File("/path/to/" + filename);
RequestParams params = new RequestParams();
try {
params.put("file", myFile);
params.put("filename", filename);
client.post("http://192.168.1.105:8080/ATestInternetCameraServlet/CameraServlet", params, responseHandler);
}
catch(FileNotFoundException e) {
// handle
}
http://192.168.1.105:8080/ATestInternetCameraServlet/CameraServlet
它没有在我这边加载。请在浏览器中查看您的问题。您真的应该回答您的问题。他们中有人帮了忙吗?