我尝试了3种不同的方法，用于将图像从Android发送到PHP。 这三个都给出了消息＆＃34;缺少inp_image名称＆＃34;。我想我可能不会将图像作为图像发送，而是作为一些文本发送？ 我在Android中使用此http请求类：https://github.com/kevinsawicki/http-request
方法1，将其编码为base64：
//String selectedFilePath = FilePath.getPath(context, imageUri);
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 4;
Bitmap bm = BitmapFactory.decodeFile(destImage,options);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.JPEG,40,baos);
byte[] byteImage_photo = baos.toByteArray(); // bitmap object
//generate base64 string of image
String encodedImage = Base64.encodeToString(byteImage_photo,Base64.DEFAULT);
// Send image
HttpRequest request = HttpRequest.post(apiUrl);
request.part("inp_image", encodedImage);
stringResponse = request.body();
方法2 - 发送图像输入流
HttpRequest request = HttpRequest.post(apiUrl);
request.part("inp_image", in); // sending input stream
stringResponse = request.body();
方法3 - 发送文件：
String sourceFilename= FilePath.getPath(context, imageUri);
HttpRequest request = HttpRequest.post(apiUrl);
request.part("inp_image", new File(sourceFilename)); // sending input stream
stringResponse = request.body();
Android Mainifest：
<?xml version="1.0" encoding="utf-8"?>
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
MainActivity：
package com.nettport.imageupload.imageupload;
import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Environment;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import org.w3c.dom.Text;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.channels.FileChannel;
import java.util.HashMap;
import java.util.Map;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
/* Check permission */
checkPermissionRead();
checkPermissionWrite();
/* Button listener */
buttonListener();
} // onCreate
private void checkPermissionRead(){
int MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE = 1;
if (checkSelfPermission(android.Manifest.permission.READ_EXTERNAL_STORAGE)
!= PackageManager.PERMISSION_GRANTED) {
// Should we show an explanation?
if (shouldShowRequestPermissionRationale(
android.Manifest.permission.READ_EXTERNAL_STORAGE)) {
// Explain to the user why we need to read the contacts
}
requestPermissions(new String[]{android.Manifest.permission.READ_EXTERNAL_STORAGE},
MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE);
// MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE is an
// app-defined int constant that should be quite unique
return;
}
} // checkPermissionRead
private void checkPermissionWrite(){
int MY_PERMISSIONS_REQUEST_WRITE_EXTERNAL_STORAGE = 1;
if (checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE)
!= PackageManager.PERMISSION_GRANTED) {
// Should we show an explanation?
if (shouldShowRequestPermissionRationale(
android.Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
// Explain to the user why we need to read the contacts
}
requestPermissions(new String[]{android.Manifest.permission.WRITE_EXTERNAL_STORAGE},
MY_PERMISSIONS_REQUEST_WRITE_EXTERNAL_STORAGE);
// MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE is an
// app-defined int constant that should be quite unique
return;
}
} // checkPermissionRead
public void buttonListener() {
// Image button listener
Button buttonLoadImage = (Button) findViewById(R.id.buttonLoadImage);
buttonLoadImage.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick (View view){
// Load gallery
// User can select images and upload them
// Result will be in onActivityResult
Intent pickPhoto = new Intent(Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(pickPhoto , 1);//one can be replaced with any action code
}
});
// Camera
Button buttonLoadCamera = (Button) findViewById(R.id.buttonLoadCamera);
buttonLoadCamera.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick (View view){
// Load camera
// Result will be in onActivityResult
Intent takePicture = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(takePicture, 0);//zero can be replaced with any action code
}
});
} // buttonListener
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK) {
Uri selectedImageUri = data.getData();
// Set image
ImageView imageViewImage = (ImageView)findViewById(R.id.imageViewImage);
imageViewImage.setImageURI(selectedImageUri);
// Save image
String destinationFilename = savefile(selectedImageUri);
try {
InputStream in = getContentResolver().openInputStream(selectedImageUri);
TextView textViewDynamicText = (TextView) findViewById(R.id.textViewDynamicText); // Dynamic text
String apiURL = "https://xxxxxx.com/xxxxxx/image_upload.php";
UploadImage task = new UploadImage(this, apiURL, in, selectedImageUri, destinationFilename, textViewDynamicText, new UploadImage.TaskListener() {
@Override
public void onFinished(String result) {
// Do Something after the task has finished
imageUploadResult();
}
});
task.execute();
//in.close();
}
catch (java.io.FileNotFoundException e) {
Toast.makeText(this, "MainAcrivity java.io.FileNotFoundException: " + e.toString(), Toast.LENGTH_LONG).show();
}
catch (java.io.IOException e) {
Toast.makeText(this, "MainAcrivity java.io.IOException: " + e.toString(), Toast.LENGTH_LONG).show();
}
} // RESULT_OK
} // onActivityResult
public void imageUploadResult(){
// Dynamic text
TextView textViewDynamicText = (TextView)findViewById(R.id.textViewDynamicText);
Toast.makeText(this, textViewDynamicText.getText().toString(), Toast.LENGTH_SHORT).show();
} // imageUploadResult
public String savefile(Uri sourceuri) {
String sourceFilename= FilePath.getPath(this, sourceuri);
String destinationPath = android.os.Environment.getExternalStorageDirectory().getPath()+File.separatorChar+"/Upload";
String destinationFilename = destinationPath+"/upload_me.png";
// Make dir
File folder = new File(destinationPath);
boolean success = true;
if (!folder.exists()) {
success = folder.mkdir();
}
if (success) {
} else {
Toast.makeText(this, "Dir failed", Toast.LENGTH_LONG).show();
}
BufferedInputStream bis = null;
BufferedOutputStream bos = null;
try {
bis = new BufferedInputStream(new FileInputStream(sourceFilename));
bos = new BufferedOutputStream(new FileOutputStream(destinationFilename, false));
byte[] buf = new byte[1024];
bis.read(buf);
do {
bos.write(buf);
} while(bis.read(buf) != -1);
// Toast.makeText(this, "Saved to " + destinationFilename, Toast.LENGTH_LONG).show();
}
catch (IOException e) {
e.printStackTrace();
Toast.makeText(this, "savefile#1: " + e.toString() + "\nFrom: " + sourceFilename, Toast.LENGTH_LONG).show();
}
finally {
try {
if (bis != null) bis.close();
if (bos != null) bos.close();
}
catch (IOException e) {
e.printStackTrace();
Toast.makeText(this, "savefile#2: " + e.toString(), Toast.LENGTH_LONG).show();
}
}
return destinationFilename;
}
}
UploadImage类：
package com.nettport.imageupload.imageupload;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Environment;
import android.util.Base64;
import android.widget.TextView;
import android.widget.Toast;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
/**
* Created by bruker on 08.08.2017.
* Updated
*/
public class UploadImage extends AsyncTask<String, Void, String> {
/* Class variables */
private Context context; // Holder (this)
private String apiUrl; // URL for image upload form, example http://website.com/image_upload.php
private TextView dynamicText;
private InputStream in;
private Uri imageUri;
private String destImage;
private final UploadImage.TaskListener taskListener; // This is the reference to the associated listener
public interface TaskListener {
public void onFinished(String result);
}
/*- Constructor GET, SEND --------------------------------------------------------------- */
public UploadImage(Context ctx, String applicationPIUrl, InputStream input, Uri selectedImageUri, String destinationFilename, TextView textViewDynamicText, UploadImage.TaskListener listener) {
context = ctx;
apiUrl = applicationPIUrl;
in = input;
imageUri = selectedImageUri;
destImage = destinationFilename;
dynamicText = textViewDynamicText;
this.taskListener = listener; // The listener reference is passed in through the constructor
}
@Override
protected void onPreExecute() {
super.onPreExecute();
dynamicText.setText(dynamicText.getText().toString() + "\n" + "Loading...");
}
@Override
protected String doInBackground(String... params) {
// Run methods
String stringResponse ="";
try {
try{
// Method 1 - Base 64
/*
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 4;
Bitmap bm = BitmapFactory.decodeFile(destImage,options);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.JPEG,40,baos);
byte[] byteImage_photo = baos.toByteArray(); // bitmap object
//generate base64 string of image
String encodedImage = Base64.encodeToString(byteImage_photo,Base64.DEFAULT);
// Send image
HttpRequest request = HttpRequest.post(apiUrl);
request.part("inp_image", encodedImage);
stringResponse = request.body();
*/
// Method 2 - Input stream
/*
HttpRequest request = HttpRequest.post(apiUrl);
request.part("inp_image", in); // sending input stream
stringResponse = request.body();
*/
// Method 3 - File
String sourceFilename= FilePath.getPath(context, imageUri);
HttpRequest request = HttpRequest.post(apiUrl);
request.part("inp_image", new File(sourceFilename)); // sending input stream
stringResponse = request.body();
}
catch (Exception e){
return e.toString();
}
}
catch(Exception e){
return e.toString();
}
return stringResponse;
}
@Override
protected void onPostExecute(String result) {
// Set text view with result string
if(dynamicText == null){
Toast.makeText(context, "NULL", Toast.LENGTH_SHORT).show();
}
else {
dynamicText.setText(dynamicText.getText().toString() + "\n" + result);
}
// In onPostExecute we check if the listener is valid
if(this.taskListener != null) {
// And if it is we call the callback function on it.
this.taskListener.onFinished(result);
}
}
@Override
protected void onProgressUpdate(Void... values) {}
}
PHP脚本：
<?php
/**
*
* File: image_upload.php
* Date 13:05 04.08.2017
* Version 1
* Copyright (c) 2017 S. A. Ditlefsen
* License: http://opensource.org/licenses/gpl-license.php GNU Public License
*
*/
/*- Get extention ---------------------------------------------------------------------- */
function getExtension($str) {
$i = strrpos($str,".");
if (!$i) { return ""; }
$l = strlen($str) - $i;
$ext = substr($str,$i+1,$l);
return $ext;
}
/*- Path -------------------------------------------------------------------------------- */
if(!(is_dir("_images"))){
mkdir("_images");
}
/*- Script start ------------------------------------------------------------------------ */
$name = stripslashes($_FILES['inp_image']['name']);
if($name){
$extension = getExtension($name);
$extension = strtolower($extension);
if (($extension != "jpg") && ($extension != "jpeg") && ($extension != "png") && ($extension != "gif")) {
echo"unknown_file_extension";
}
else{
$date_time = date("Y-m-d_h-i-s");
$new_name = $date_time . ".png";
$new_path = "_images/";
$uploaded_file = $new_path . $new_name;
// Upload file
if (move_uploaded_file($_FILES['inp_image']['tmp_name'], $uploaded_file)) {
// Get image size
$file_size = filesize($uploaded_file);
// Check with and height
list($width,$height) = getimagesize($uploaded_file);
if($width == "" OR $height == ""){
echo"getimagesize_failed";
}
else{
// Resize to $settings_image_width
$newwidth=1000;
$newheight=($height/$width)*$newwidth; // 667
$tmp=imagecreatetruecolor($newwidth,$newheight);
if($extension=="jpg" || $extension=="jpeg" ){
$src = imagecreatefromjpeg($uploaded_file);
}
else if($extension=="png"){
$src = imagecreatefrompng($uploaded_file);
}
else{
$src = imagecreatefromgif($uploaded_file);
}
imagecopyresampled($tmp,$src,0,0,0,0,$newwidth,$newheight, $width,$height);
imagepng($tmp,$uploaded_file);
imagedestroy($tmp);
echo"$new_name";
} // width height
} // move_uploaded_file
else{
switch ($_FILES['inp_food_image_b']['error']) {
case UPLOAD_ERR_OK:
echo"image_to_big";
break;
case UPLOAD_ERR_NO_FILE:
echo"no_file_uploaded";
break;
case UPLOAD_ERR_INI_SIZE:
echo"to_big_size_in_configuration";
break;
case UPLOAD_ERR_FORM_SIZE:
echo"to_big_size_in_form";
break;
default:
echo"unknown_error";
break;
}
}
} // extention
} // name
else{
echo"Missing inp_image name";
}
?>
答案 0 :(得分：1)
尝试这个，它对我有用，
String imgstring = getStringImage(bitmap)
public String getStringImage(Bitmap bmp) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.JPEG, 100, baos);
byte[] imageBytes = baos.toByteArray();
String encodedImage = Base64.encodeToString(imageBytes, Base64.DEFAULT);
return encodedImage;
}
凌空
public void addimage() {
String link = CommonVariables.SERVER_IP + "/uploadimage.php";
StringRequest request = new StringRequest(Request.Method.POST, link, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError volleyError) {
if (volleyError != null && volleyError.getMessage() != null) {
Toast.makeText(getContext(), volleyError.getMessage(), Toast.LENGTH_LONG).show();
} else {
Toast.makeText(getContext(), "Something went wrong", Toast.LENGTH_LONG).show();
}
}
}) {
@Override
protected Map<String, String> getParams() {
Map<String, String> params = new HashMap<String, String>();
params.put("imagename", "yourimagename");
params.put("imagecode", imageString);
return params;
}
};
RetryPolicy mRetryPolicy = new DefaultRetryPolicy(
0,
DefaultRetryPolicy.DEFAULT_MAX_RETRIES,
DefaultRetryPolicy.DEFAULT_BACKOFF_MULT);
request.setRetryPolicy(mRetryPolicy);
queue.add(request);
}
PHP
<?php
if($_SERVER['REQUEST_METHOD']=='POST'){
$imgcode = $_POST['imagecode'];
$imagename = $_POST['imagename'];
require_once('dbconnect.php');
// this is ths path where your image is stored in the file in server
$path = "images/$imagename.jpg";
$sql = "INSERT INTO productlist(proimagename)
VALUES ('$imagename')";
if(mysqli_query($con,$sql)){
file_put_contents($path,base64_decode($imgcode));
echo "1";
}
mysqli_close($con);
}else{
echo "0";
}