Question

在活动A中，它有3个listView。单击提交按钮时，我想将文本和imagePath存储到MySQL中，并将图像存储在PhotoUpload文件夹中。

String imagess;
Uri imgURI;

 public void uploadImageAndText(ArrayList<ImageAndText> listItems, final String id) {
            JSONArray jsonArray = new JSONArray();
            try {
                for (ImageAndText i : listItems) {
                    JSONObject object = new JSONObject();
                    String type = i.getType();
                    String[] Type = type.split(":");
                    object.put("type", Type[1]);
                    Toast.makeText(getApplicationContext(), Type[1], Toast.LENGTH_LONG).show();
                    String amount = i.getAmount();
                    String[] Amount = amount.split(":");
                    object.put("amount", Amount[1]);
                    String description = i.getDescription();
                    String[] Description = description.split(":");
                    object.put("description", Description[1]);
                    Uri uploadImage = i.getImage(); //not sure
                    object.put("image", uploadImage); // not sure 
                    object.put("ts_id", id);
                    jsonArray.put(object);
                }
            } catch (JSONException e) {
                e.printStackTrace();
            }

            AddStaff ru = new AddStaff(jsonArray);
            ru.execute();

        }

        class AddStaff extends AsyncTask<String, Void, String> {
            ProgressDialog loading;

            JSONArray jsonArray;

            AddStaff(JSONArray jsonArray) {
                this.jsonArray = jsonArray;
            }

            @Override
            protected void onPreExecute() {
                super.onPreExecute();
                loading = ProgressDialog.show(AddClaims.this, "Please Wait", null, true, true);
            }

            @Override
            protected String doInBackground(String... params) {
                HashMap<String, String> data = new HashMap<String, String>();
                data.put("listItems", jsonArray.toString());
                data.put(Configs.KEY_IMAGE,imagess);  // not sure
                RequestHandler rh = new RequestHandler();
                String result = rh.sendPostRequest(Configs.STAFF_BENEFIT, data);
                return result;
            }

            @Override
            protected void onPostExecute(String s) {
                super.onPostExecute(s);
                loading.dismiss();
                Toast.makeText(getApplicationContext(), s, Toast.LENGTH_LONG).show();
            }
        }


    }

staffBenefit.php

  <?php
        if( $_SERVER['REQUEST_METHOD']=='POST' ){

            if( !empty( $_POST['listItems'] ) ){

                $mysqli = new mysqli("127.0.0.1:3307", "root", "", "androiddb");
                if( $mysqli->connect_errno ) echo "Failed to connect to MySQL";

                $image = $_POST['image'];

                $listItems = json_decode( $_POST['listItems'], true ); 

                $sql="SELECT id FROM staff_benefit ORDER BY id ASC";

                $id=0;

                $res=$mysqli->query( $sql );
                while( $rs=$res->fetch_object() ) $id=$rs->id;

                $path="$id.png";
                $actualpath="http://192.168.107.115:80/Android/CRUD/PhotoUpload/$path";

                $sql="INSERT INTO `staff_benefit` ( `type`, `amount`, `description`, `image`, `ts_id` ) VALUES ( ?, ?, ?, ?, ? )";
                $stmt=$mysqli->prepare( $sql );

                $pathelements=array( realpath( $_SERVER['DOCUMENT_ROOT'] ), 'CRUD', 'PhotoUpload', '' );
                $savepath = realpath( implode( DIRECTORY_SEPARATOR, $pathelements ) ) . "{$id}.png";

                $bytes=file_put_contents( $savepath, base64_decode( $image ) );
                if( !$bytes ){
                    echo 'Error saving image';  
                }

                if ( $stmt ) {
                     foreach( $listItems as $item ){ 

                        $stmt->bind_param('sssss', $item['type'], $item['amount'], $item['description'], $actualpath, $item['ts_id'] );
                        $res=$stmt->execute();

                        if( !$res ) echo 'Query failed with code: '.$stmt->errno;
                    } 
                }
                $mysqli->close();
            }
        }
    ?>

我的应用程序没有崩溃，但我在logCat中看到了这个。

01-14 02:05:11.978  20483-21081/com.example.project.myapplication W/System.err﹕ java.lang.NullPointerException
01-14 02:05:11.978  20483-21081/com.example.project.myapplication W/System.err﹕ at libcore.net.UriCodec.encode(UriCodec.java:132)
01-14 02:05:11.978  20483-21081/com.example.project.myapplication W/System.err﹕ at java.net.URLEncoder.encode(URLEncoder.java:57)
01-14 02:05:11.978  20483-21081/com.example.project.myapplication W/System.err﹕ at com.example.project.myapplication.Handler.RequestHandler.getPostDataString(RequestHandler.java:118)
01-14 02:05:11.978  20483-21081/com.example.project.myapplication W/System.err﹕ at com.example.project.myapplication.Handler.RequestHandler.sendPostRequest(RequestHandler.java:51)
01-14 02:05:11.978  20483-21081/com.example.project.myapplication W/System.err﹕ at com.example.project.myapplication.GUI.AddClaims$AddInfo$AddStaff.doInBackground(AddClaims.java:480)
01-14 02:05:11.978  20483-21081/com.example.project.myapplication W/System.err﹕ at com.example.project.myapplication.GUI.AddClaims$AddInfo$AddStaff.doInBackground(AddClaims.java:459)

有人可以帮助我如何实现这一目标吗？如何将URI图像存储到文件夹中？感谢。

被修改

 @Override
            protected String doInBackground(String... params) {

                for (int index = 0; index < jsonArray.length(); index++) {
                    try {
                        JSONObject jsonObject = jsonArray.getJSONObject(index);
                        String strUri = jsonObject.getString("image");
                        HashMap<String, String> data = new HashMap<String, String>();
                        data.put("listItems", jsonArray.toString());
                        data.put(Configs.KEY_IMAGE, getStringImage(Uri.parse(strUri)));
                        RequestHandler rh = new RequestHandler();
                        String result = rh.sendPostRequest(Configs.STAFF_BENEFIT, data);
                        return result;
                    } catch (Exception e) {
                    }
                }
                return "";
            }

            @Override
            protected void onPostExecute(String s) {
                super.onPostExecute(s);
                loading.dismiss();
                Toast.makeText(getApplicationContext(), s, Toast.LENGTH_LONG).show();
            }
        }


        public String getStringImage(Uri imgUri) {
            try {
                Bitmap bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), imgUri);
                ByteArrayOutputStream baos = new ByteArrayOutputStream();
                bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
                byte[] imageBytes = baos.toByteArray();
                String encodedImage = Base64.encodeToString(imageBytes, Base64.DEFAULT);
                return encodedImage;
            } catch (Exception e) {
            }

            return "";
        }
    }

当我检查MySQL时，插入了三个数据，但存储在列图像中的路径是相同的（最后一个），只有最后一个图像存储在photoUpload文件夹中。

它假设有36.png，37.png和38.png，但它只保存了36.png

Answer 1

将图像从android发送到MySQL服务器

获取NPE，因为imagess数组为null。

因为想要从设备向服务器发送多个图像。迭代JSONArray，在发送到服务器之前发送doInBackground并从Uri获取Bitmap：

1。在uploadImageAndText方法存储中，Uri为JSONObject.Change中的字符串：

object.put("image", uploadImage);

到

object.put("image", uploadImage.toString());

2. ：使用Uri和编码图像字符串创建一个获取位图的方法，如：

public String getStringImage(Uri imgUri){
    Bitmap bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(),imgUri);
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
    byte[] imageBytes = baos.toByteArray();
    String encodedImage = Base64.encodeToString(imageBytes, Base64.DEFAULT);
    return encodedImage;
}

3。最后在getStringImage中致电doInBackground：

@Override
protected String doInBackground(String... params) {

  for(int index=0;index<jsonArray.length();index++){
   JSONObject jsonObject=jsonArray.getJSONObject(index);
    String strUri=jsonObject.getString("image");
    HashMap<String, String> data = new HashMap<String, String>();
    data.put("listItems", jsonArray.toString());
    data.put(Configs.KEY_IMAGE,getStringImage(Uri.parse(strUri)));  
    RequestHandler rh = new RequestHandler();
    String result = rh.sendPostRequest(Configs.STAFF_BENEFIT, data);
  }
   return "";        
 }

将图像从android发送到MySQL服务器

1 个答案: