我一直在开发一款Java/Android应用程序,需要能够从设备上拍照并将其上传到我的运行在树莓派2上的Ubuntu服务器。
我想测试php的上传功能,因此我创建了一个简单的html页面,将其转发到我的upload.php文件。
然而,当我运行这段代码时,总是得到以下响应:
结果
我怀疑这是由于数据未传输,因为它始终通过大小测试,可能是0字节。有人能帮我解决这个问题吗?提前感谢!
我想测试php的上传功能,因此我创建了一个简单的html页面,将其转发到我的upload.php文件。
index.html
<!DOCTYPE html>
<html>
<body>
<form action="upload.php" method="post" enctype="multipart/form-data">
Select image to upload:
<input type="file" name="fileToUpload" id="fileToUpload">
<input type="submit" value="Upload Image" name="submit">
</form>
</body>
</html>
upload.php
<?php
$target_dir = "uploads/";
$target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);
$uploadOk = 1;
$imageFileType = pathinfo($target_file,PATHINFO_EXTENSION);
// Check if image file is a actual image or fake image
if(isset($_POST["submit"])) {
$check = getimagesize($_FILES["fileToUpload"]["tmp_name"]);
if($check !== false) {
echo "File is an image - " . $check["mime"] . ".";
$uploadOk = 1;
} else {
echo "File is not an image.";
$uploadOk = 0;
}
}
// Check if file already exists
if (file_exists($target_file)) {
echo "Sorry, file already exists.";
$uploadOk = 0;
}
// Check file size
if ($_FILES["fileToUpload"]["size"] > 500000) {
echo "Sorry, your file is too large.";
$uploadOk = 0;
}
// Allow certain file formats
if($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg"
&& $imageFileType != "gif" ) {
echo "Sorry, only JPG, JPEG, PNG & GIF files are allowed.";
$uploadOk = 0;
}
// Check if $uploadOk is set to 0 by an error
if ($uploadOk == 0) {
echo "Sorry, your file was not uploaded.";
// if everything is ok, try to upload file
} else {
if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file)) {
echo "The file ". basename( $_FILES["fileToUpload"]["name"]). " has been uploaded.";
} else {
echo "Sorry, there was an error uploading your file.";
}
}
?>
我希望现在通过Java来实现这个,所以我创建了一个Java类来完成这个任务:
ServerManager.java
package servertest;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpVersion;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.mime.MultipartEntity;
import org.apache.http.entity.mime.content.ContentBody;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.CoreProtocolPNames;
import org.apache.http.util.EntityUtils;
/**
* Created by Pranav on 5/9/2015.
*/
public class ServerManager {
public static void main(String args[]) {
try {
new ServerManager().uploadFile("C:\\Users\\Pranav\\Downloads\\ic_server_test.png");
} catch (IOException ex) {
Logger.getLogger(ServerManager.class.getName()).log(Level.SEVERE, null, ex);
}
}
public int uploadFile(String sourceFileUri) throws IOException {
String userHome = System.getProperty("user.home");
//Create Client
HttpClient httpClient = new DefaultHttpClient();
httpClient.getParams().setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1);
HttpPost httppost = new HttpPost("http://192.168.0.14/upload.php");
File file = new File("C:\\Users\\Pranav\\Downloads\\ic_server_test.png");
MultipartEntity mpEntity = new MultipartEntity();
ContentBody contentFile = new FileBody(file);
mpEntity.addPart("userfile", contentFile);
httppost.setEntity(mpEntity);
System.out.println("executing request " + httppost.getRequestLine());
HttpResponse response = httpClient.execute(httppost);
HttpEntity resEntity = response.getEntity();
if (!(response.getStatusLine().toString()).equals("HTTP/1.1 200 OK")) {
System.out.println("SUCCESSFUL: Image has been uploaded");
} else {
System.err.println("ERROR: Could not upload the image");
}
System.out.println(response.getStatusLine());
if (resEntity != null) {
System.out.println(EntityUtils.toString(resEntity));
}
if (resEntity != null) {
resEntity.consumeContent();
}
httpClient.getConnectionManager().shutdown();
return 0;
}
}
然而,当我运行这段代码时,总是得到以下响应:
结果
executing request POST http://192.168.0.14/upload.php HTTP/1.1
ERROR: Could not upload the image
HTTP/1.1 200 OK
Sorry, file already exists.Sorry, only JPG, JPEG, PNG & GIF files are allowed.Sorry, your file was not uploaded.
我怀疑这是由于数据未传输,因为它始终通过大小测试,可能是0字节。有人能帮我解决这个问题吗?提前感谢!