发布的base64图像到PHP服务器的android [英] Posting base64 image to php server in android
本文介绍了发布的base64图像到PHP服务器的android的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我工作，其中用户可以将图像上传到服务器的模块上。要做到这一点，我必须要改变所选图像为Base64的。转换后，我不得不使用JSON的POST方法来上传图片，但每次应用程序崩溃和放弃的logcat此错误
错误转换结果显示java.lang.NullPointerException：锁== NULL
和错误的另一条线是
错误解析数据org.json.JSONException：输入结束的字符0
这是我的code，我想，请看看，让我有什么错，我在这里做什么。
buttonLoadPicture.setOnClickListener（新View.OnClickListener（）{
@覆盖
公共无效的onClick（视图v）{
// TODO自动生成方法存根
意图I =新的意图（
Intent.ACTION_PICK，android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI）;
startActivityForResult（ⅰ，RESULT_LOAD_IMAGE）;
}
}）;
}
@覆盖
保护无效onActivityResult（INT申请code，INT结果code，意图数据）{
super.onActivityResult（要求code，因此code，数据）;
如果（要求code == RESULT_LOAD_IMAGE和放大器;＆安培;结果code == RESULT_OK和放大器;＆安培;！NULL =数据）{
乌里selectedImage = data.getData（）;
的String [] filePathColumn = {MediaStore.Images.Media.DATA};
光标光标= getContentResolver（）查询（selectedImage，
filePathColumn，NULL，NULL，NULL）;
cursor.moveToFirst（）;
INT参数：columnIndex = cursor.getColumnIndex（filePathColumn [0]）;
字符串picturePath = cursor.getString（参数：columnIndex）;
cursor.close（）;
ImageView的ImageView的=（ImageView的）findViewById（R.id.imgView）;
imageView.setImageBitmap（BitmapFactory.de codeFILE（picturePath））;
SS = BitmapFactory.de codeFILE（picturePath）;
Log.d（价值，ss.toString（））;
ByteArrayOutputStream BAOS =新ByteArrayOutputStream（）;
ss.com preSS（Bitmap.Com pressFormat.JPEG，100，BAOS）;
byte []的B = baos.toByteArray（）;
字符串imageEn codeD = Base64.en codeToString（B，Base64.DEFAULT）;
EN codeDIMAGE = imageEn coded.toString（）;
Log.e（看，imageEn codeD）; // **工作正常**
Log.e（EN codeDIMAGE，恩codeDIMAGE）; // **工作正常**
新PostImage（）执行（）;
}
}
类PostImage扩展的AsyncTask＆LT;字符串，字符串，字符串＆GT; {
@燮pressWarnings（德precation）
@覆盖
保护字符串doInBackground（字符串参数... args）{
// TODO自动生成方法存根
字符串连接codedString = EN codedImage.toString（）;
Log.d（stringgggg，恩codedString）; // **工作正常**
名单＆LT;的NameValuePair＆GT; PARAMS =新的ArrayList＆LT;的NameValuePair＆GT;（）;
params.add（新BasicNameValuePair（uploaded_file，恩codedString））;
字符串URI =http://192.168.2.166/uploadimage/upload.php;
JSONObject的JSON = jsonParser.makeHtt prequest（URI，POST，则params）;
Log.d（valueeeeee，json.toString（））; // ** Crashhhh !!!!! **
返回json.toString（）;
}
}
}
这是我的PHP code
＆LT; PHP
$ JSON [成功] = 1; $ JSON [信息] =YOU ARE HERE ... upload.php的;
$ JSON [形象] = $ _ FILES ['uploaded_file'] ['名称'];
$ JSON ['tmp_name的值'] = $ _ FILES ['uploaded_file'] ['tmp_name的值'];
回声json_en code（$ JSON）;
死（）;
//的print_r（$ _ FILES）;死（）;
$ FILE_PATH =上传/;
$ FILE_PATH = $ FILE_PATH。基本名（$ _ FILES ['uploaded_file'] ['名称']）;
如果（move_uploaded_file（$ _ FILES ['uploaded_file'] ['tmp_name的值']，$ FILE_PATH））{
//回声成功;
$ JSON [成功] = 1; $ JSON [信息] =成功后救;
} 其他{
//回声不及格;
$ JSON [成功] = 0; $ JSON [信息] =失败后保存;
}
//的print_r（$ JSON）;
//后续代码var_dump（json_en code（$ JSON））;
回声json_en code（$ JSON）;
？＆GT;
解决方案
我检查你的错误线
的JSONObject JSON = jsonParser.makeHtt prequest（URI，POST，则params）;
但无法找到 makeHtt prequest 此Method.so给你下面的链接，
确保你成功响应，然后你去<$ C $ C>的JSONObject 解析。
请检查链接1 < A HREF =http://loopj.com/android-async-http/相对=nofollow>喜欢下载jar文件异步HTTP客户端并进行API调用>
公共无效makeHTTPCall（）{
prgDialog.setMessage（调用PHP的）;
RequestParams PARAMS =新RequestParams（）;
params.put（钥匙，价值）;
params.put（多，数据）;
AsyncHttpClient客户端=新AsyncHttpClient（）;
//不要忘了更改IP地址到你的局域网的地址。端口号为好。
client.post（http://192.168.2.5:9000/imgupload/upload_image.php
PARAMS，新AsyncHtt presponseHandler（）{
//当REST返回的响应具有断点续传
//响应code'200'
@覆盖
公共无效的onSuccess（字符串响应）{
//隐藏进度对话框
prgDialog.hide（）;
Toast.makeText（getApplicationContext（），响应，
Toast.LENGTH_LONG）.show（）;
}
//当REST返回的响应具有断点续传
//响应code比'200'等，如404，
//'500'或'403'等
@覆盖
公共无效onFailure（INT状态code，可抛出错误，
字符串的内容）{
//隐藏进度对话框
prgDialog.hide（）;
//当HTTP响应code是'404'
如果（状态code == 404）{
Toast.makeText（getApplicationContext（），
请求的资源未找到，
Toast.LENGTH_LONG）.show（）;
}
//当HTTP响应code是'500'
否则，如果（状态code == 500）{
Toast.makeText（getApplicationContext（），
出事了服务器端
Toast.LENGTH_LONG）.show（）;
}
//当HTTP响应code比404等，500
其他 {
Toast.makeText（
getApplicationContext（），
发生错误\ñ最常见的错误：\ n1的设备没有连接到互联网\ N2 Web应用程序不部署在应用服务器\ N3应用程序服务器没有运行\ñHTTP状态code：。
+状态code，Toast.LENGTH_LONG）
。显示（）;
}
}
}）;
}
I am working on a module in which user can upload the image to the server. To achieve this, I have to change selected image into Base64. After conversion, I have to use Json POST method to upload image, but every time application crashes and Logcat give this error
Error converting result java.lang.NullPointerException: lock == null
and another line of error is
Error parsing data org.json.JSONException: End of input at character 0 of
this is my code that I am trying, Please have a look and let me what mistake I am doing here.
buttonLoadPicture.setOnClickListener( new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent i = new Intent(
Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i, RESULT_LOAD_IMAGE);
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
ImageView imageView = (ImageView) findViewById(R.id.imgView);
imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));
ss = BitmapFactory.decodeFile(picturePath);
Log.d("value", ss.toString());
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ss.compress(Bitmap.CompressFormat.JPEG, 100, baos);
byte[] b = baos.toByteArray();
String imageEncoded = Base64.encodeToString(b,Base64.DEFAULT);
encodedImage = imageEncoded.toString();
Log.e("LOOK", imageEncoded); // **working proper**
Log.e("encodedImage", encodedImage);// **working proper**
new PostImage().execute();
}
}
class PostImage extends AsyncTask<String, String, String>{
@SuppressWarnings("deprecation")
@Override
protected String doInBackground(String... args) {
// TODO Auto-generated method stub
String encodedString = encodedImage.toString();
Log.d("stringgggg", encodedString);//**working proper**
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("uploaded_file", encodedString));
String uri = "http://192.168.2.166/uploadimage/upload.php";
JSONObject json = jsonParser.makeHttpRequest(uri,"POST",params);
Log.d("valueeeeee", json.toString());// **Crashhhh!!!!!**
return json.toString();
}
}
}
this is my php code
<?php
$json["success"] = 1; $json["message"] = "YOU ARE HERE... UPLOAD.PHP";
$json['image']=$_FILES['uploaded_file']['name'];
$json['tmp_name']=$_FILES['uploaded_file']['tmp_name'];
echo json_encode($json);
die();
//print_r($_FILES); die();
$file_path = "uploads/";
$file_path = $file_path . basename( $_FILES['uploaded_file']['name']);
if(move_uploaded_file($_FILES['uploaded_file']['tmp_name'], $file_path)) {
//echo "success";
$json["success"] = 1; $json["message"] = "Successfully post save";
} else{
// echo "fail";
$json["success"] = 0; $json["message"] = "Fail post save";
}
// print_r($json);
// var_dump(json_encode($json));
echo json_encode($json);
?>
解决方案
I checked your error line at
JSONObject json = jsonParser.makeHttpRequest(uri,"POST",params);
but could not found makeHttpRequest this Method.so giving you below link,
Make sure you get Success response and then you go for JSONObject parsing.
Please check Link 1 Link2 download jar file Asynchronous Http Client and make Api call like
public void makeHTTPCall() {
prgDialog.setMessage("Invoking Php");
RequestParams params = new RequestParams();
params.put("key", "value");
params.put("more", "data");
AsyncHttpClient client = new AsyncHttpClient();
// Don't forget to change the IP address to your LAN address. Port no as well.
client.post("http://192.168.2.5:9000/imgupload/upload_image.php",
params, new AsyncHttpResponseHandler() {
// When the response returned by REST has Http
// response code '200'
@Override
public void onSuccess(String response) {
// Hide Progress Dialog
prgDialog.hide();
Toast.makeText(getApplicationContext(), response,
Toast.LENGTH_LONG).show();
}
// When the response returned by REST has Http
// response code other than '200' such as '404',
// '500' or '403' etc
@Override
public void onFailure(int statusCode, Throwable error,
String content) {
// Hide Progress Dialog
prgDialog.hide();
// When Http response code is '404'
if (statusCode == 404) {
Toast.makeText(getApplicationContext(),
"Requested resource not found",
Toast.LENGTH_LONG).show();
}
// When Http response code is '500'
else if (statusCode == 500) {
Toast.makeText(getApplicationContext(),
"Something went wrong at server end",
Toast.LENGTH_LONG).show();
}
// When Http response code other than 404, 500
else {
Toast.makeText(
getApplicationContext(),
"Error Occured \n Most Common Error: \n1. Device not connected to Internet\n2. Web App is not deployed in App server\n3. App server is not running\n HTTP Status code : "
+ statusCode, Toast.LENGTH_LONG)
.show();
}
}
});
}
这篇关于发布的base64图像到PHP服务器的android的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
