我的代码只是将文件转换为byte array，然后再将其转换为Base64 Encoded format，以便我们可以将参数发布到URL。在服务器端，我们{{1}它返回并将其写入文件。使用volley库完成与服务器的连接。这个代码应该共享，因为我花了3天时间找到Android文件上传的解决方案。
此代码正常工作
的config.php
decodesfileupload.php
<?php
/***
* @Source: devshed
* @author E-Oreo
* http://forums.devshed.com/php-faqs-stickies-167/program-basic-secure-login-system-using-php-mysql-891201.html
*/
// These variables define the connection information for your MySQL database
$username = "root";
$password = "";
$host = "localhost";
$dbname = "clearsta_smt";
// UTF-8 is a character encoding scheme that allows you to conveniently store
// a wide varienty of special characters, like ¢ or €, in your database.
// By passing the following $options array to the database connection code we
// are telling the MySQL server that we want to communicate with it using UTF-8
// See Wikipedia for more information on UTF-8:
// http://en.wikipedia.org/wiki/UTF-8
$options = array(PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES utf8');
// A try/catch statement is a common method of error handling in object oriented code.
// First, PHP executes the code within the try block. If at any time it encounters an
// error while executing that code, it stops immediately and jumps down to the
// catch block. For more detailed information on exceptions and try/catch blocks:
// http://us2.php.net/manual/en/language.exceptions.php
try
{
// This statement opens a connection to your database using the PDO library
// PDO is designed to provide a flexible interface between PHP and many
// different types of database servers. For more information on PDO:
// http://us2.php.net/manual/en/class.pdo.php
$db = new PDO("mysql:host={$host};dbname={$dbname};charset=utf8", $username, $password, $options);
}
catch(PDOException $ex)
{
// If an error occurs while opening a connection to your database, it will
// be trapped here. The script will output an error and stop executing.
// Note: On a production website, you should not output $ex->getMessage().
// It may provide an attacker with helpful information about your code
// (like your database username and password).
die("Failed to connect to the database: " . $ex->getMessage());
}
// This statement configures PDO to throw an exception when it encounters
// an error. This allows us to use try/catch blocks to trap database errors.
$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
// This statement configures PDO to return database rows from your database using an associative
// array. This means the array will have string indexes, where the string value
// represents the name of the column in your database.
$db->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_ASSOC);
// This block of code is used to undo magic quotes. Magic quotes are a terrible
// feature that was removed from PHP as of PHP 5.4. However, older installations
// of PHP may still have magic quotes enabled and this code is necessary to
// prevent them from causing problems. For more information on magic quotes:
// http://php.net/manual/en/security.magicquotes.php
if(function_exists('get_magic_quotes_gpc') && get_magic_quotes_gpc())
{
function undo_magic_quotes_gpc(&$array)
{
foreach($array as &$value)
{
if(is_array($value))
{
undo_magic_quotes_gpc($value);
}
else
{
$value = stripslashes($value);
}
}
}
undo_magic_quotes_gpc($_POST);
undo_magic_quotes_gpc($_GET);
undo_magic_quotes_gpc($_COOKIE);
}
// This tells the web browser that your content is encoded using UTF-8
// and that it should submit content back to you using UTF-8
header('Content-Type: text/html; charset=utf-8');
// This initializes a session. Sessions are used to store information about
// a visitor from one web page visit to the next. Unlike a cookie, the information is
// stored on the server-side and cannot be modified by the visitor. However,
// note that in most cases sessions do still use cookies and require the visitor
// to have cookies enabled. For more information about sessions:
// http://us.php.net/manual/en/book.session.php
session_start();
// Note that it is a good practice to NOT end your PHP files with a closing PHP tag.
// This prevents trailing newlines on the file from being included in your output,
// which can cause problems with redirecting users.
?>
AddFile.java
<?php
require('config.php');
date_default_timezone_set('Asia/Kolkata');
if(!empty($_POST)){
if(empty($_POST['inputUid']) || empty($_POST['inputFname']) ||empty($_POST['uploadedfile'])){
$response["error"]=true;
$response["success"] = 0;
$response["message"] = "Error in connection";
die(json_encode($response));
}
else{
$uploadedfile = $_POST['uploadedfile'];
$filename = $_POST['inputUid'].date("d-m-Y-h-i").$_POST['inputFname'];
$query = "INSERT INTO tbl_cloud (cluid,clfile,cldate) VALUES (:puid,:pfile,:pdate)";
$query_params = array(
':puid' => $_POST['inputUid'],
':pfile' => $filename,
':pdate' => date("d/m/Y h:i:sa"),
);
try {
$stmt = $db->prepare($query);
$result = $stmt->execute($query_params);
$path = "uploads/$filename";
file_put_contents($path,base64_decode($uploadedfile));
} catch (PDOException $ex) {
$response['error']=true;
$response['success'] = 0 ;
$response['message'] = "Database Error1, Please try Again";
die(json_encode($response));
}
$response['error']=false;
$response['success']=1;
$response['message']="The file has been uploaded";
echo json_encode($response);
}
}
?>
content_add_file.xml
package com.smt.smartmoneytracker;
import android.app.ProgressDialog;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.provider.OpenableColumns;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Base64;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import com.android.volley.Request;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.smt.smartmoneytracker.app.AppConfig;
import com.smt.smartmoneytracker.app.AppController;
import com.smt.smartmoneytracker.helper.SessionManager;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
public class AddFile extends AppCompatActivity {
Button b,b1;
TextView messageText;
SessionManager session;
private static final int SELECT_FILE = 1;
private String selectedImagePath;
private static final String TAG = RegisterActivity.class.getSimpleName();
private String saq;
private String asd;
private String sdd;
private String uid;
private String sss;
private String fff;
private String nnn;
private ProgressDialog loading = null;
@Override
protected void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_add_file);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
session = new SessionManager(getApplicationContext());
b = (Button) findViewById(R.id.btnfile);
b1 = (Button) findViewById(R.id.button);
messageText =(TextView) findViewById(R.id.messageText);
//First button action
b.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent();
intent.setType("file/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent,"Select File"), SELECT_FILE);
}}
);
b1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
//Getting userid, rawfile, filename
uid = session.getUserid();
sss = getBase64();
nnn = getFname();
String tag_string_req = "req_login";
StringRequest strReq = new StringRequest(Request.Method.POST,
AppConfig.URL_FILEUP, new Response.Listener<String>() {
ProgressDialog loading = ProgressDialog.show(AddFile.this,"Uploading...","Please wait...",false,false);
@Override
public void onResponse(String response) {
Log.d(TAG, "Upload Response: " + response.toString());
try {
loading.dismiss();
JSONObject jObj = new JSONObject(response);
boolean error = jObj.getBoolean("error");
String msg = jObj.getString("message");
if (!error) {
Toast.makeText(getApplicationContext(),msg, Toast.LENGTH_LONG).show();
} else {
// Get the error message
String errorMsg = jObj.getString("message");
Toast.makeText(getApplicationContext(),errorMsg, Toast.LENGTH_LONG).show();
}
} catch (JSONException e) {
e.printStackTrace();
}
loading.dismiss();
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.e(TAG, "Resposne Error: " + error.getMessage());
loading.dismiss();
Toast.makeText(getApplicationContext(),
"No Internet Connection/Network Problem", Toast.LENGTH_LONG).show();
}
}) {
@Override
protected Map<String, String> getParams() {
// Posting parameters to login url
Map<String, String> params = new HashMap<String, String>();
params.put("inputUid",uid);
params.put("uploadedfile", sss);
params.put("inputFname", nnn);
return params;
}
};
AppController.getInstance().addToRequestQueue(strReq, tag_string_req);
}
});
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
if (requestCode == SELECT_FILE) {
Uri selectedImageUri = data.getData();
//Getting image path
selectedImagePath = getPath(selectedImageUri);
Toast.makeText(AddFile.this,selectedImagePath,Toast.LENGTH_LONG).show();
//Getting file name
Cursor returnCursor = getContentResolver().query(selectedImageUri, null, null, null, null);
/*
* Get the column indexes of the data in the Cursor,
* move to the first row in the Cursor, get the data,
* and display it.
*/
int nameIndex = returnCursor.getColumnIndex(OpenableColumns.DISPLAY_NAME);
returnCursor.moveToFirst();
String fname = returnCursor.getString(nameIndex);
messageText.setText(fname);
setFname(fname);
File file = new File(selectedImagePath);
byte[] b = new byte[(int) file.length()];
try {
FileInputStream fileInputStream = new FileInputStream(file);
fileInputStream.read(b);
for (int i = 0; i < b.length; i++) {
}
String s = Base64.encodeToString(b, Base64.DEFAULT);
setBase64(s);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
catch (IOException e1) {
e1.printStackTrace();
}
}
}
}
public void setFname(String sdd){
this.sdd =sdd;
}
public String getFname(){
return sdd;
}
public String getBase64() {
return saq;
}
public void setBase64(String saq) {
this.saq = saq;
}
public String getPath(Uri uri) {
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, projection, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
}