我正在制作一个上传一个文件从SD
卡到PHP
服务器的应用程序。但是,当我尝试这样做时,我收到了一个错误。
我的Android代码如下:
package de.fileupload;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpEntityEnclosingRequestBase;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.entity.mime.MultipartEntity;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.entity.mime.content.StringBody;
import org.apache.http.impl.client.DefaultHttpClient;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Date;
import android.os.Bundle;
@SuppressWarnings("unused")
public class FileUpload extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final TextView tmp = (TextView) findViewById(R.id.textView1);
tmp.setText("Hi! Click the button!");
Button b = (Button) findViewById(R.id.button1);
b.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
File f = new File("mnt/sdcard/SMSBackup.txt");
try {
f.createNewFile();
Date d = new Date();
PrintWriter writer = new PrintWriter(f);
writer.println(d.toString());
writer.close();
HttpClient client = new DefaultHttpClient();
httpPostFileUpload(client, "mnt/sdcard/SMSBackup.txt", "http://10.0.2.2:8080/admin/admin/upload1.php", "uploadedfile");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
}
public void httpPostFileUpload(
HttpClient client,
String filePath,
String uploadUri,
String inputNameAttr) throws ClientProtocolException,
IOException {
HttpUriRequest request = new HttpPost(uploadUri);
MultipartEntity form = new MultipartEntity();
client.getParams().setBooleanParameter("http.protocol.expect-continue", false);
form.addPart(inputNameAttr, new FileBody(new File(filePath)));
((HttpEntityEnclosingRequestBase) request).setEntity(form);
try {
client.execute(request);
} catch (ClientProtocolException e) {
throw e;
} catch (IOException ee) {
throw ee;
}
}
}
我的PHP文件如下:
upload1.php
<meta name="generator" content="Namo WebEditor(Trial)">
<form enctype="multipart/form-data" action="upload.php" method="POST">
<input type="hidden" name="MAX_FILE_SIZE" value="100000" />
Choose a file to upload: <input name="uploadedfile" type="file" /><br /><input
type="submit" value="Upload File" />
</form>
<?php
$to_file = "tmp/" . basename($_FILES['uploadedfile']['name']);
$from_file = $_FILES['uploadedfile']['tmp_name'];
if (move_uploaded_file($from_file, $to_file)) {
echo "Successful upload";
?>
<a href="<?php echo $to_file;?>"><?php echo $to_file;?></a>
<?php
} else {
echo "Unsuccessful upload";
}
?>
和upload.php是:
<?php
// Where the file is going to be placed
$target_path = "localhost/admin/admin/uploads/";
/* Add the original filename to our target path.
Result is "uploads/filename.extension" */
$target_path = $target_path . basename( $_FILES['uploadedfile']['name']);
if(move_uploaded_file($_FILES['uploadedfile']['tmp_name'], $target_path)) {
echo "The file ". basename( $_FILES['uploadedfile']['name']).
" has been uploaded";
chmod ("uploads/".basename( $_FILES['uploadedfile']['name']), 0644);
} else{
echo "There was an error uploading the file, please try again!";
echo "filename: " . basename( $_FILES['uploadedfile']['name']);
echo "target_path: " .$target_path;
}
?>
任何人都可以告诉我哪里错了吗?它始终显示文件的上传失败。我的服务器正在运行。
答案 0 :(得分:3)
答案 1 :(得分:1)
尝试使用move_uploaded_file()
,功能copy()
。它们使用相同的输入参数,如下所示:
if(copy($_FILES['uploadedfile']['tmp_name'], $target_path)) { ...
成功上传后,PHP进程很可能无权将上传的文件移动到不同的文件夹,因为移动包含本质上的复制和删除操作。
还有一件事 - 尽量不要将上传文件的权限更改为0644,因为这也可以限制在PHP进程中,即在Linux上处理文件系统操作时(我假设你使用Linux机器)服务器)工作过程(在你的情况下是PHP和apache)具有特定的权限设置,也许他们没有能力删除/移动工作文件夹之外的文件。 您还应将上传文件夹权限更改为755或777。
答案 2 :(得分:1)
答案 3 :(得分:0)
此类允许您直接上传文件。无需解码您的文件。
public class Helpher extends AsyncTask<String, Void, String> {
Context context;
JSONObject json;
ProgressDialog dialog;
int serverResponseCode = 0;
DataOutputStream dos = null;
FileInputStream fis = null;
BufferedReader br = null;
public Helpher(Context context) {
this.context = context;
}
protected void onPreExecute() {
dialog = ProgressDialog.show(Main2Activity.this, "ProgressDialog", "Wait!");
}
@Override
protected String doInBackground(String... arg0) {
try {
File f = new File(arg0[0]);
URL url = new URL("http://localhost:8888/imageupload.php");
int bytesRead;
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setUseCaches(false);
conn.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY);
String contentDisposition = "Content-Disposition: form-data; name=\"keyValueForFile\"; filename=\""
+ f.getName() + "\"";
String contentType = "Content-Type: application/octet-stream";
dos = new DataOutputStream(conn.getOutputStream());
fis = new FileInputStream(f);
dos.writeBytes(SPACER + BOUNDARY + NEW_LINE);
dos.writeBytes(contentDisposition + NEW_LINE);
dos.writeBytes(contentType + NEW_LINE);
dos.writeBytes(NEW_LINE);
byte[] buffer = new byte[MAX_BUFFER_SIZE];
while ((bytesRead = fis.read(buffer)) != -1) {
dos.write(buffer, 0, bytesRead);
}
dos.writeBytes(NEW_LINE);
dos.writeBytes(SPACER + BOUNDARY + SPACER);
dos.flush();
int responseCode = conn.getResponseCode();
if (responseCode != 200) {
Log.w(TAG,
responseCode + " Error: " + conn.getResponseMessage());
return null;
}
br = new BufferedReader(
new InputStreamReader(conn.getInputStream()));
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = br.readLine()) != null) {
sb.append(line + "\n");
}
Log.d(TAG, "Sucessfully uploaded " + f.getName());
} catch (MalformedURLException e) {
} catch (IOException e) {
} finally {
try {
dos.close();
if (fis != null)
fis.close();
if (br != null)
br.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return String.valueOf(serverResponseCode);
}
@Override
protected void onPostExecute(String result) {
dialog.dismiss();
}
}
这是用于从Android上传图片的AsyncTask“Helpher”类。要调用此类,请使用下面的语法。
new Main2Activity.Helpher(this).execute(fileUri.getPath());
这里是fileUri.getPath()的本地图像位置。 如果您想在“StringBuilder sb”中查看服务器响应值,则可以打印sb值