我需要将JSON上传到服务器，所以我尝试使用base64对其进行编码，然后通过JSON发送，但在服务器端解码图像时，图像显示已损坏。我甚至尝试在线base64到图像转换器，结果是一样的。
这是我的活动代码，我从图库或相机中选择后将图像编码为base64。
package com.paaltao.activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Base64;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import com.android.volley.AuthFailureError;
import com.android.volley.NetworkError;
import com.android.volley.NoConnectionError;
import com.android.volley.ParseError;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.ServerError;
import com.android.volley.TimeoutError;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.JsonObjectRequest;
import com.github.mrengineer13.snackbar.SnackBar;
import com.kbeanie.imagechooser.api.ChooserType;
import com.kbeanie.imagechooser.api.ChosenImage;
import com.kbeanie.imagechooser.api.ImageChooserListener;
import com.kbeanie.imagechooser.api.ImageChooserManager;
import com.paaltao.R;
import com.paaltao.classes.SharedPreferenceClass;
import com.paaltao.network.VolleySingleton;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.ByteArrayOutputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import cn.pedant.SweetAlert.SweetAlertDialog;
import static com.paaltao.extras.Keys.UserCredentials.KEY_ACCESS_TOKEN;
import static com.paaltao.extras.Keys.UserCredentials.KEY_DATA;
import static com.paaltao.extras.Keys.UserCredentials.KEY_EMAIL;
import static com.paaltao.extras.Keys.UserCredentials.KEY_ERROR_CODE;
import static com.paaltao.extras.Keys.UserCredentials.KEY_ERROR_NODE;
import static com.paaltao.extras.Keys.UserCredentials.KEY_HAS_SHOP;
import static com.paaltao.extras.Keys.UserCredentials.KEY_MESSAGE;
import static com.paaltao.extras.Keys.UserCredentials.KEY_OPEN_SHOP;
import static com.paaltao.extras.Keys.UserCredentials.KEY_SELLER_ID;
import static com.paaltao.extras.Keys.UserCredentials.KEY_SIGN_IN;
import static com.paaltao.extras.Keys.UserCredentials.KEY_TOKEN;
import static com.paaltao.extras.Keys.UserCredentials.KEY_VENDOR;
import static com.paaltao.extras.urlEndPoints.BASE_URL;
import static com.paaltao.extras.urlEndPoints.OPEN_SHOP;
import static com.paaltao.extras.urlEndPoints.SIGN_UP;
import static com.paaltao.extras.urlEndPoints.UAT_BASE_URL;
public class OpenShopActivity extends AppCompatActivity implements ImageChooserListener {
Button selectCoverButton;
private ImageChooserManager imageChooserManager;
String imagePath,sellerID,accessToken,encodedImage;
ImageView coverImageArea;
private SweetAlertDialog dialog;
private Bitmap myBitmap;
private EditText shopName,aboutShop,contactNo,shopAddress,city,state,postalCode,shopURL;
SharedPreferenceClass preferenceClass;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_open_shop);
Toolbar toolbar = (Toolbar) this.findViewById(R.id.app_bar);
toolbar.setTitleTextColor(Color.WHITE);
this.setSupportActionBar(toolbar);
this.setTitle("open a shop!");
initialize();
onItemClick();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_open_shop, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_launch){
if (validationCheck()) {
sendJsonRequest();
}
}
//noinspection SimplifiableIfStatement
return super.onOptionsItemSelected(item);
}
public void initialize(){
selectCoverButton = (Button)findViewById(R.id.select_cover_button);
coverImageArea = (ImageView)findViewById(R.id.shop_cover_image);
shopName = (EditText)findViewById(R.id.shop_name);
aboutShop = (EditText)findViewById(R.id.about_shop);
contactNo = (EditText)findViewById(R.id.shop_contact);
shopAddress = (EditText)findViewById(R.id.shop_street_name);
city = (EditText)findViewById(R.id.shop_city_name);
state = (EditText)findViewById(R.id.shop_state);
postalCode = (EditText)findViewById(R.id.shop_pincode);
shopURL = (EditText)findViewById(R.id.shop_url);
preferenceClass = new SharedPreferenceClass(this);
}
public boolean validationCheck(){
if(shopName.getText().toString().length() == 0)
shopName.setError("Please provide a shop name");
else if (aboutShop.getText().toString().length() == 0)
aboutShop.setError("Please provide some info about your shop");
else if(contactNo.getText().toString().length() == 0 && contactNo.getText().toString().length()>10)
contactNo.setError("Please provide 10 digit contact number");
else if(postalCode.getText().toString().length() == 0)
postalCode.setError("Please provide a postal code");
else if(shopURL.getText().toString().length() == 0 && shopURL.getText().toString().contains("."))
shopURL.setError("Please provide a shop url");
else return true;
return false;
}
public void sendJsonRequest(){
final JSONObject jsonObject = new JSONObject();
final JSONObject openShop = new JSONObject();
try{
jsonObject.put("accessToken","67drd56g");
jsonObject.put("merchantName","Arindam Dawn");
jsonObject.put("userEmail","arindamdawn3@gmail.com");
jsonObject.put("shopName",shopName.getText().toString());
jsonObject.put("aboutShop",aboutShop.getText().toString());
jsonObject.put("contactNo",contactNo.getText().toString());
jsonObject.put("street",shopAddress.getText().toString());
jsonObject.put("city",city.getText().toString());
jsonObject.put("state",city.getText().toString());
jsonObject.put("country","India");
jsonObject.put("pincode",postalCode.getText().toString());
jsonObject.put("shopUrl",shopURL.getText().toString());
if (encodedImage != null){
jsonObject.put("coverImage",encodedImage);}
else
jsonObject.put("coverImage","");
openShop.put("openShop", jsonObject);
} catch (JSONException e) {
e.printStackTrace();
}
RequestQueue requestQueue = VolleySingleton.getsInstance().getRequestQueue();
JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.POST,getRequestUrl(),openShop,new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject jsonObject) {
Log.e("error",jsonObject.toString());
Log.e("json", openShop.toString());
if (encodedImage != null){
Log.e("base64",encodedImage);
}
parseJSONResponse(jsonObject);
}
},new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError volleyError) {
if (volleyError instanceof TimeoutError || volleyError instanceof NoConnectionError) {
new SnackBar.Builder(OpenShopActivity.this)
.withMessage("No Internet Connection!")
.withTextColorId(R.color.white)
.withDuration((short) 6000)
.show();
} else if (volleyError instanceof AuthFailureError) {
//TODO
} else if (volleyError instanceof ServerError) {
//TODO
} else if (volleyError instanceof NetworkError) {
//TODO
} else if (volleyError instanceof ParseError) {
//TODO
}
}
});
requestQueue.add(jsonObjectRequest);
}
public static String getRequestUrl() {
return UAT_BASE_URL
+ OPEN_SHOP;
}
public void onItemClick(){
selectCoverButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
chooseImageDialog();
Log.d("TAG","image chooser selected!");
selectCoverButton.setText("Change cover image");
}
});
}
public void parseJSONResponse(JSONObject jsonObject) {
if (jsonObject == null || jsonObject.length() == 0) {
return;
}
try {
JSONObject dataObject = jsonObject.getJSONObject(KEY_DATA);
JSONObject openShopObject = dataObject.getJSONObject(KEY_OPEN_SHOP);
JSONObject errorNodeObject = dataObject.getJSONObject(KEY_ERROR_NODE);
sellerID = openShopObject.getString(KEY_SELLER_ID);
accessToken = openShopObject.getString(KEY_ACCESS_TOKEN);
String errorCode = errorNodeObject.getString(KEY_ERROR_CODE);
String message = errorNodeObject.getString(KEY_MESSAGE);
if (message.contains("Already Registered")){
new SnackBar.Builder(OpenShopActivity.this)
.withMessage("A shop already exist with this username")
.withTextColorId(R.color.white)
.withDuration((short) 6000)
.show();
}
else{
new SnackBar.Builder(OpenShopActivity.this)
.withMessage("Congrats! Shop Created")
.withTextColorId(R.color.white)
.withDuration((short) 6000)
.show();
preferenceClass.saveVendorLoginSuccess("true");
Intent intent = new Intent(OpenShopActivity.this,HomeActivity.class);
startActivity(intent);
finish();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
public void chooseImage(){
imageChooserManager = new ImageChooserManager(this,
ChooserType.REQUEST_PICK_PICTURE);
imageChooserManager.setImageChooserListener(this);
try {
imageChooserManager.choose();
} catch (Exception e) {
e.printStackTrace();
}
}
public void snapImage(){
imageChooserManager = new ImageChooserManager(this, ChooserType.REQUEST_CAPTURE_PICTURE);
imageChooserManager.setImageChooserListener(this);
try {
imageChooserManager.choose();
} catch (Exception e) {
e.printStackTrace();
}
}
public void chooseImageDialog(){
dialog = new SweetAlertDialog(this, SweetAlertDialog.NORMAL_TYPE);
dialog.setTitleText("Choose your Cover Image")
.setContentText("Choose from gallery or take a camera snapshot!")
.setConfirmText("Gallery")
.setCancelText("Camera")
.setConfirmClickListener(new SweetAlertDialog.OnSweetClickListener() {
@Override
public void onClick(SweetAlertDialog sDialog) {
chooseImage();
}
})
.setCancelClickListener(new SweetAlertDialog.OnSweetClickListener() {
@Override
public void onClick(SweetAlertDialog sDialog) {
snapImage();
}
})
.show();
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK &&
(requestCode == ChooserType.REQUEST_PICK_PICTURE ||
requestCode == ChooserType.REQUEST_CAPTURE_PICTURE)) {
imageChooserManager.submit(requestCode, data);
}
}
@Override
public void onImageChosen(final ChosenImage image) {
runOnUiThread(new Runnable() {
@Override
public void run() {
if (image != null) {
// Use the image
imagePath = image.getFileThumbnail();
Log.d("TAG","PATH is"+imagePath);
myBitmap = BitmapFactory.decodeFile(imagePath);
ImageView myImage = (ImageView) findViewById(R.id.shop_cover_image);
myImage.setImageBitmap(myBitmap);
coverImageArea.setVisibility(View.VISIBLE);
dialog.hide();
dialog.dismiss();
Bitmap bm = BitmapFactory.decodeFile(imagePath);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.JPEG, 75, baos); //bm is the bitmap object
byte[] b = baos.toByteArray();
encodedImage = Base64.encodeToString(b, Base64.NO_WRAP);
Log.e("addy",encodedImage);
//
// InputStream inputStream = null;//You can get an inputStream using any IO API
// try {
// inputStream = new FileInputStream(imagePath);
// } catch (FileNotFoundException e) {
// e.printStackTrace();
// }
// byte[] bytes;
// byte[] buffer = new byte[8192];
// int bytesRead;
// ByteArrayOutputStream output = new ByteArrayOutputStream();
// try {
// assert inputStream != null;
// while ((bytesRead = inputStream.read(buffer)) != -1) {
// output.write(buffer, 0, bytesRead);
// }
// } catch (IOException e) {
// e.printStackTrace();
// }
// bytes = output.toByteArray();
// image.getFilePathOriginal();
// image.getFileThumbnail();
// image.getFileThumbnailSmall();
}
}
});
}
@Override
public void onError(final String reason) {
runOnUiThread(new Runnable() {
@Override
public void run() {
// Show error message
}
});
}
}
我在日志中获得的编码的base64字符串是
/ 9J / 4AAQSkZJRgABAQAAAQABAAD / 2wBDAAgGBgcGBQgHBwcJCQgKDBQNDAsLDBkSEw8UHRofHh0aHBwgJC4nICIsIxwcKDcpLDAxNDQ0Hyc5PTgyPC4zNDL / 2wBDAQkJCQwLDBgNDRgyIRwhMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjL / wAARCAJQBBwDASIAAhEBAxEB / 8QAHwAAAQUBAQEBAQEAAAAAAAAAAAECAwQFBgcICQoL / 8QAtRAAAgEDAwIEAwUFBAQAAAF9AQIDAAQRBRIhMUEGE1FhByJxFDKBkaEII0KxwRVS0fAkM2JyggkKFhcYGRolJicoKSo0NTY3ODk6Q0RFRkdISUpTVFVWV1hZWmNkZWZnaGlqc3R1dnd4eXqDhIWGh4iJipKTlJWWl5iZmqKjpKWmp6ipqrKztLW2t7i5usLDxMXGx8jJytLT1NXW19jZ2uHi4 + Tl5ufo6erx8vP09fb3 + PN6 / 8QAHwEAAwEBAQEBAQEBAQAAAAAAAAECAwQFBgcICQoL / 8QAtREAAgECBAQDBAcFBAQAAQJ3AAECAxEEBSExBhJBUQdhcRMiMoEIFEKRobHBCSMzUvAVYnLRChYkNOEl8RcYGRomJygpKjU2Nzg5OkNERUZHSElKU1RVVldYWVpjZGVmZ2hpanN0dXZ3eHl6goOEhYaHiImKkpOUlZaXmJmaoqOkpaanqKmqsrO0tba3uLm6wsPExcbHyMnK0tPU1dbX2Nna4uPk5ebn6Onq8vP09fb3 + PN6 / 9oADAMBAAIRAxEAPwDwgKVPWplwVxnn + dWp7ITHcp2t / OqrxtGxVxyKhNM0qUpQ3GkY4pRxSh2H8VLvPcD8qoyGbAenWpY7jPySjjsfSmLgk / Lg0EA5ppgSSwbRkYI9RVdsgjNSxyvGcfeT0qZ4UuF3xEZHUd6YEIPHvQTxRgjINLxjNJIBKDzQP Sl9aBgBkUAdeaFozg0WEL3pPpS44PNJjjtQgDvR1FLtx3poGKAHc801qeKaeaAQ08I1OjGE6Ux8 + WfrT1zt96AArkEUkbZwD1FOpjArhx260wQ5l2njoaQHing7l65qMgqcUDJo2wOtEq7l3AfWkjG4HANSDuCODTEVQOaUZ59qc6bT0pqnPP50gFHY04c5B60nqKUE4z + dALQcoHUml2AZwwJNMH3jz + VKckH2oAXacdM4pQMHNIMggg0oZjkZzj1oAQHkjHNLniniQd0GDR + 7Ochh9DmgBo64zS5yD3pyxxkcSgf7wP8A9eneQQSQ6tn0NADCPSnIcdRwOxoMTjqpH4UD3oAmURuCWUrn + 7Uy2yn7km72PBqCMBlI9KtwRbsY5oJsMaAqMFSD7ipI4 / lOBk1oQW0hUgA4x3qwunF0JKYPbHFMCfwy1tbQ6kXnjhuXi2QlxnJ7j9BT / Ek6TC2gRY2aKIGR1HViOmeen + NU4rSSOdGKggN371DcpI1zOrLtUscHHvQp9At1MHZnkipMYPWpJIyoJKn8qiIxzmga1GOBg1EQc9eKdzznFBHPGcUrgCSsm4Zyp6g9DQY0cblbY390 / wBKj9aDzimMU7kOHGKAwAJpRIQCGwyjsaXyg2Sh59D1oEmMBwv1pBjODQMg4IxQP4uaQwAxml9qPTmk65 / KgAP3sdBQDwc / hSDJU0u3AoAAQBQDknFNwc0oPNABj5frSY5pc56mk7daBADnmk7Yo / lSA0AKOtSQqWNRqMnAq5BEzkKgyScAUhj4LR7lyqcY71b / ALMlQZ38fSuz8KeE3u7eQ8bQOWJ6mr83gm + QzN5bGNRlNpBz9fyp + xm1dEqaR5NOrJcSB + oOKjwMYq1qbq + oXDIwZd2AQeDjjI / KqowMk0loUKB + VHfNHagUgQYPSjr9KXHWm + vpQAuMA + tIOmKUrz15ox1 / nRcAHU0nTjHWlo6ZI60AAXt0oyDz1o68mkA96EAd6DyaU HAODmkFMA6DmjtQDmjr36UwEAzxR + NKMjOKBGT / AI0ANz6UoBPSpPLAPJ4pwCgHFAEaIcfSn4PFOU4zx + dAzj2oQtBuzPan7BGvJ + tBKx8k5PYVXdmYkk8UDFeYEnHT1NNLE / xU3b1pQDQAZ5pRRgmlx70AAB5zTxgDrQBz0phOKBXFz3pAT0pR3pQuQaAGL941OYx5Oe9RRrwTVnGLccGkMqnjPOaOaeVpApoAaAW4FP2hPrTgAmTjJphJY0xbjDkk80D5RS5K00tnNACdM00cg05RnrTsAA1IyMDNOCgA807txTTk8CmAetA60oXHU04EAHaM + 5osALGWPLBR6mmkhSQvPuaGI / ibNND4PA49aFoA4KWO4nP1owOcmk3FuKAODmgAAHUUEUopD9aAEx70uOM0UAUwEzQT1oxjNJzk0gEpfwoA60nQdaAF6Zpppx6dab170CNwcfT2pssKSrhhn3p2MnFOFcq0PYcU9zKubZ4T6r60xOnXIrYZFZSDzmqU9mV5QZHp6VrGd9Diq4ZrWJVI9DQDx9KTnJFL6HpWiOWwZz1pu5oWDpx7VJgHPH1qOT7tFwLcbxXYIPyP / OoZY2iOGBxUajPPQjvVqO5DgR3A46BqoLFcdDR1q2LYRBycMjKcNVQHrStYAA5JpVHvRSrxTQw6ZoGMUpHGKQDrSEJjIPpQBweKXFJ0zQAq96TjB9aWkxkHpQMY33APepB92oiOQM96lzgGhCG5FHsaAOaXvTAjB2Njsae43KSOopSm8EflSRuRkHqKAGo + 3pU6MT361DIgHI6Gljb1pgTyJvj9xVfgE5q1G2RioZo9pNICPHBxSjjHpTFJp + ePY0AKOhB7UueOOfWmA5I / WnKOOvegBy9xTg3IP4GmZzz6UdOKAHY6jsKULTAe + acDwc0ALjApcnGc03J4pBnnmgCYM4Bw3Wnqx2gHn8KiU / qKcDQBZTA424PtWnZKjMo3MP1rKi + XnrnrWrp2GIAHe kB6J4R8Hza8HMCgopG5jwFruY / hXCttKZZx5oAMYj5B9Qc / 5 / lR8L5PsehxEKM3dyUP0VR / Vq9KZQ4ww4p3FY8pv / hQs219Ou1dDIATIpUgevviuE1zwzcaNqE0E4RmU / ejbIP + fevoqa2LQlIXMRHIIrjtU8GwX + mXJc7LyFmYPnh1681LHY + fL6Fg75wRWJPEBuIIGP1rtdf0OeC5dfKJwf4T1rkb6MpkbSCPWiLJSMwocccj2pP4ufSnY5pgbqOo96saEHA / GjIz0pflPUYNG3k4IpDGYG00uz3oIwRxS54JosAoZip3ruH6il8n5NyHdz93vUe7GB3NOEhwSO1O4rCHOOnNC8HGKlEkbtiZSePvL1psibSWjIdOxHaiwXGE8kDpTf8APSjBP / 16XmkFhPUUgwB / KjkA9jSDk0IYdMik6UpHFJxk0AGeKOtIRke9PjTJ9hQA + NQc8da6Tw5o8899F5kZVXA2E / Z / ACrAjXcwAr1rR4IxYWstsVX90o3KeenPNLmUXditc3bBZ7SJLe0gHlIO46 + 9cv8AEPxtNbae + jwnbczriZh1SM9vq38vqKzfFfiS90O5tlsrtRLkl1OGx6ZB6da8 / urua + upbm4cyzSsWd26sfWuh4hONokRhbcgPU0ClAzSbeuK5zQXHFA60AGgA88UgAdDRijPPApATQA4fr60dv6U0d6X8aYwB / Ok4ANLgk8DigISaEIQDrSetP2AdTS5Ve2aAIwM0uxqUvxxSGQt1NAhwUdzQSue9R7iBQOB60xj / MweAKTLEnJpAPU08d + KAEAA6U4c + 9KqbjgVMqKiMzHao7 + v0ppCuQOCi5pnmkqQevrTpZd5IUYQdB601lZskKcfSkFhnJpMe9LjFA7jvQMQetKMjpS4 / WnAe1AhBk0vTPFOyMcUjGgY0nPrQOhpw5FKB3H60CEAOOlOAypP8qlVc9v0qaK0MhwOvp60rjKkUZIIxV + K13xYdwoB71ctdJlds 7MCrR0mVh8y8CpvZhYxPs6biFbePpTHXZxit46UUHyRk + pqlPpzp95SMU7i3MnmmN8pPrVuZ
但它是一个损坏的图像。需要帮助！
答案 0 :(得分：4)
好吧它为我工作。我在第二个活动中解码后得到了正确的图像。只是为了检查我在Act1中有一个ImageView，在这里我将其转换为Base64String将其作为字符串传递给Act2和Act2（在第二个活动中我在图像视图中有一个Android机器人）我解码基础64图像并设置位图我解码了。
第一项活动代码：
public class ActivityImageBase64 extends Activity {
ImageView ivOriginal;
String imageInBase64;
private Bitmap mBitmap;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_image_base64);
ivOriginal = (ImageView) findViewById(R.id.ivAct1);
ivOriginal.setDrawingCacheEnabled(true);
}
public void start(View v){
mBitmap = ivOriginal.getDrawingCache();
ByteArrayOutputStream byteArray = new ByteArrayOutputStream();
mBitmap.compress(Bitmap.CompressFormat.JPEG, 100, byteArray);
byte[] byteArr = byteArray.toByteArray();
imageInBase64 = Base64.encodeToString(byteArr, Base64.DEFAULT);
System.out.println(imageInBase64);
Intent intent = new Intent(ActivityImageBase64.this, ActivityImageBase64_2.class);
intent.putExtra("image", imageInBase64);
startActivity(intent);
}
}
第二个活动中的代码（将字符串解码为位图）
public class ActivityImageBase64_2 extends Activity {
ImageView ivBase64Image;
private String base64Image;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_activity_image_base64_2);
ivBase64Image = (ImageView) findViewById(R.id.ivAndroidBot);
base64Image = getIntent().getStringExtra("image");
byte[] decodedString = Base64.decode(base64Image, Base64.DEFAULT);
Bitmap base64Bitmap = BitmapFactory.decodeByteArray(decodedString, 0,
decodedString.length);
ivBase64Image.setImageBitmap(base64Bitmap);
}
}