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  • android studio上传图片到java服务器
    千次阅读
    2022-03-15 16:13:36

    1.build.gradle配置(增加)

    		dependencies{
    			    implementation 'com.squareup.okhttp3:okhttp:4.9.0'
        			implementation 'org.conscrypt:conscrypt-android:2.5.1'
    		}
    

    2.AndroidManifest.xml配置权限

        <uses-permission android:name="android.permission.INTERNET" />
        <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
        <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
        <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
        <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    
    在application里面添加android:usesCleartextTraffic="true"
    

    3.安卓前端部分
    3.1xml样式界面

    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        >
    
        <Button
            android:id="@+id/btn"
            android:layout_width="150dp"
            android:layout_height="100dp"
            android:text="上传"/>
    
    </LinearLayout>
    

    3.2安卓后台代码MainActivity

    package com.example.upload;
    
    import androidx.appcompat.app.AppCompatActivity;
    
    import android.os.Bundle;
    import android.os.Environment;
    import android.os.Handler;
    import android.os.Looper;
    import android.os.Message;
    import android.util.Log;
    import android.view.View;
    import android.widget.Button;
    import android.widget.Toast;
    
    
    import org.json.JSONException;
    import org.json.JSONObject;
    
    import java.io.File;
    import java.io.IOException;
    
    import okhttp3.MediaType;
    import okhttp3.MultipartBody;
    import okhttp3.OkHttpClient;
    import okhttp3.Request;
    import okhttp3.RequestBody;
    import okhttp3.Response;
    
    public class MainActivity extends AppCompatActivity {
    
        private Button btn;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            btn = findViewById(R.id.btn);
            btn.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    String result = "{\"data\": \"0\"}";
                    new Thread(new Runnable(){
                        @Override
                        public void run() {
    
                            String img = Environment.getExternalStorageDirectory()+"/1/123456789.png";
                            String url = "http://192.168.0.103:8019/uploadAudio";
                            try {
                                uploadImage(url,img);
                            } catch (IOException e) {
                                Looper.prepare();
                                e.printStackTrace();
                                Looper.loop();
                            } catch (JSONException e) {
                                e.printStackTrace();
                            }
                            //创建信息对象
                            Message message = Message.obtain();
                            Bundle bundle = new Bundle();
                            bundle.putString("data",result);
                            message.setData(bundle);//向主线程发信息
                            addTrackHandler.sendMessage(message);
                        }
                    }).start();
    
                }
            });
        }
    
        /**
         * 上传图片
         * @param url
         * @param imagePath 图片路径
         * @return 新图片的路径
         * @throws IOException
         * @throws JSONException
         */
        public static String uploadImage(String url, String imagePath) throws IOException, JSONException {
            OkHttpClient okHttpClient = new OkHttpClient();
            File file = new File(imagePath);
            RequestBody image = RequestBody.create(MediaType.parse("image/png"), file);
            RequestBody requestBody = new MultipartBody.Builder()
                    .setType(MultipartBody.FORM)
                    .addFormDataPart("file", imagePath, image)
                    .build();
            Request request = new Request.Builder()
                    .url(url)
                    .post(requestBody)
                    .build();
            Response response = okHttpClient.newCall(request).execute();
            JSONObject jsonObject = new JSONObject(response.body().string());
            return jsonObject.optString("image");
        }
    
        Handler addTrackHandler = new Handler(new Handler.Callback() {
            @Override
            public boolean handleMessage(Message message) {
                String result = "";
                try {
                    result = message.getData().getString("data");
                    Toast.makeText(MainActivity.this, "新增成功", Toast.LENGTH_SHORT).show();
                }catch (Exception e){
    
                }
                //Toast.makeText(MainActivity.this, "调用成功"+result, Toast.LENGTH_SHORT).show();//测试弹框
                return true;
            }
        });
    
    }
    

    4.spring boot后台接受图片并写入本地路径

    @RequestMapping("/uploadAudio")
        @ResponseBody
        public void uploadAudio(@RequestParam MultipartFile file) {
      System.out.println(file.getOriginalFilename());
            if (!file.isEmpty()) {
                String filename = file.getOriginalFilename();
                System.out.println("Load fn:" + filename);
                try {
                    String fileurl = "d:/Download/testt.png";
                    File f = new File(fileurl);
                    BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(f));
                    if (!f.exists()) {
                        try {
                            f.createNewFile();
                        } catch (IOException e) {
                            e.printStackTrace();
                        }
                    }
                    out.write(file.getBytes());
                    out.flush();
                    out.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }else {
                System.out.println("上传失败,因为文件是空的.");
            }
        }
    

    注:如果上传图片提示没有权限,则长按apk图标,打开读取本地文件的权限即可

    更多相关内容
  • 一个android上传图片的模块,选择系统相册,使用了一个第三方库takephoto,可以扩展上传到服务器
  • 实现了从相机获取图片和相册获得图片裁剪上传到服务器
  • 【实例简介】【实例截图】【核心代码】...import android.app.Activity;import android.content.ContentValues;import android.content.Intent;import android.database.Cursor;import android.graphics.Bitmap;im...

    【实例简介】

    【实例截图】

    8c98d76c74b4efb933ddff4e6b22c15b.png

    【核心代码】

    package cn.zhaoyb.test;

    import android.app.Activity;

    import android.content.ContentValues;

    import android.content.Intent;

    import android.database.Cursor;

    import android.graphics.Bitmap;

    import android.os.Bundle;

    import android.os.Environment;

    import android.provider.MediaStore;

    import android.support.v7.app.AppCompatActivity;

    import android.text.TextUtils;

    import android.view.Gravity;

    import android.view.View;

    import android.widget.TextView;

    import android.widget.Toast;

    import java.io.BufferedOutputStream;

    import java.io.File;

    import java.io.FileOutputStream;

    import java.text.SimpleDateFormat;

    import java.util.Date;

    import cn.zhaoyb.zcore.uploadimage.UploadManager;

    import cn.zhaoyb.zcore.uploadimage.entity.SimpleUploadView;

    public class MainActivity extends AppCompatActivity {

    private MyUploadModel mUploadModel;

    private SimpleUploadView mUploadView;

    private TextView mUploadFileTip;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_main);

    mUploadView = (SimpleUploadView) findViewById(R.id.upload_view_simple1);

    mUploadFileTip = (TextView) findViewById(R.id.edit_text_simple1);

    }

    // 拍照得到照片路径

    public void doCamera(View v) {

    Intent it = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

    startActivityForResult(it, 1);

    }

    // 本地选择图片

    public void doFile(View v) {

    Intent local = new Intent();

    local.setType("image/*");

    local.setAction(Intent.ACTION_PICK);

    startActivityForResult(local, 2);

    }

    // 回传图片或图片路径

    protected void onActivityResult(int requestCode, int resultCode, Intent data) {

    super.onActivityResult(requestCode, resultCode, data);

    if (resultCode != Activity.RESULT_OK) return;

    if (requestCode == 1) {

    Bundle extras = data.getExtras();

    Bitmap b = (Bitmap) extras.get("data");

    // 设置显示的图片

    mUploadView.getProgressImage().setImageBitmap(b);

    String name = new SimpleDateFormat("yyyyMMddhhmmss").format(new Date());

    String filePath = Environment.getExternalStorageDirectory().toString() File.separator "temp/image/" name ".jpg";

    File myCaptureFile = new File(filePath);

    try {

    if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {

    if (!myCaptureFile.getParentFile().exists()) {

    myCaptureFile.getParentFile().mkdirs();

    }

    BufferedOutputStream bos;

    bos = new BufferedOutputStream(new FileOutputStream(myCaptureFile));

    b.compress(Bitmap.CompressFormat.JPEG, 80, bos);

    bos.flush();

    bos.close();

    updatePic(filePath);

    } else {

    Toast toast = Toast.makeText(MainActivity.this, "保存失败,SD卡无效", Toast.LENGTH_SHORT);

    toast.setGravity(Gravity.CENTER, 0, 0);

    toast.show();

    }

    } catch (Exception e) {

    }

    } else {

    try {

    Cursor cursor = managedQuery(data.getData(), new String[]{MediaStore.Images.Media.DATA},

    null, null, null);

    int index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);

    cursor.moveToFirst();

    //最后根据索引值获取图片路径

    String filePath = cursor.getString(index);

    if (TextUtils.isEmpty(filePath)) return;

    updatePic(filePath);

    } catch (Exception e) {

    }

    }

    }

    /**

    * 生成上传实体类并且绑定视图

    * @param picPath

    */

    private void updatePic(String picPath) {

    if (mUploadModel == null) {

    mUploadModel = new MyUploadModel();

    }

    // 添加额外的上传参数

    mUploadModel.setUploadParams(getUploadParams());

    // 显示选择的图片

    mUploadFileTip.setText(picPath);

    // 重新绑定新图片路径

    mUploadModel.setLocalPath(picPath);

    // 上传前会绑定显示视图

    mUploadModel.bindUploadProgress(mUploadView);

    }

    public void doUpload(View v) {

    UploadManager.getInstance().execute("http://up-z1.qiniu.com", mUploadModel);

    }

    /**

    *

    * 因为此处我使用了七牛云存储接收图片,因为需要拼装相应的请求参数

    * 此处只是做了个模拟,随便输入一个token所以上传后,返回的数据是...Bad token

    * @return

    */

    private ContentValues getUploadParams() {

    ContentValues uploadParams = new ContentValues();

    uploadParams.put("token", "asdflkasjdlkfjalksdjflkajsdlkfjalksjdflkajsdljlasjefljlasdf");

    return uploadParams;

    }

    @Override

    protected void onDestroy() {

    super.onDestroy();

    if (mUploadModel != null) {

    mUploadModel.destory();

    }

    ((App)getApplication()).exit();

    }

    }

    展开全文
  • 本篇文章主要介绍了Android设置拍照或者上传本地图片示例,可以拍照或者上传本地文件,有需要的可以了解一下。
  • 根据调用系统广播实现,先保存到本地文件管理中,完美运行,可以根据后台返回的String类型图片地址来保存 给个好评噢~
  • 方便给新手学习的一个demo,使用的是Android studio和VS2015编写,VS的packpages没有引用进来
  • } /** * 图片按比例大小压缩方法(根据路径获取图片并压缩) * * @param srcPath * @return */ private static Bitmap getImage(String srcPath) { BitmapFactory.Options newOpts = new BitmapFactory.Options();...

    *

    * @param image

    * @return

    */

    private static Bitmap compressImage(Bitmap image) {

    ByteArrayOutputStream baos = new ByteArrayOutputStream();

    image.compress(Bitmap.CompressFormat.JPEG, 100, baos);

    int options = 100;

    while (baos.toByteArray().length / 1024 > 100) {

    baos.reset();

    image.compress(Bitmap.CompressFormat.JPEG, options, baos);

    options -= 10;

    }

    ByteArrayInputStream isBm = new ByteArrayInputStream(baos.toByteArray());

    Bitmap bitmap = BitmapFactory.decodeStream(isBm, null, null);

    return bitmap;

    }

    /**

    * 图片按比例大小压缩方法(根据路径获取图片并压缩)

    *

    * @param srcPath

    * @return

    */

    private static Bitmap getImage(String srcPath) {

    BitmapFactory.Options newOpts = new BitmapFactory.Options();

    newOpts.inJustDecodeBounds = true;

    Bitmap bitmap = BitmapFactory.decodeFile(srcPath, newOpts);// 此时返回bm为空

    newOpts.inJustDecodeBounds = false;

    int w = newOpts.outWidth;

    int h = newOpts.outHeight;

    // 现在主流手机比较多是800*480分辨率,所以高和宽我们设置为

    float hh = 800f;// 这里设置高度为800f

    float ww = 480f;// 这里设置宽度为480f

    // 缩放比。由于是固定比例缩放,只用高或者宽其中一个数据进行计算即可

    int be = 1;// be=1表示不缩放

    if (w > h && w > ww) {// 如果宽度大的话根据宽度固定大小缩放

    be = (int) (newOpts.outWidth / ww);

    } else if (w < h && h > hh) {// 如果高度高的话根据宽度固定大小缩放

    be = (int) (newOpts.outHeight / hh);

    }

    if (be <= 0)

    be = 1;

    newOpts.inSampleSize = be;// 设置缩放比例

    // 重新读入图片,注意此时已经把options.inJustDecodeBounds 设回false了

    bitmap = BitmapFactory.decodeFile(srcPath, newOpts);

    return compressImage(bitmap);// 压缩好比例大小后再进行质量压缩

    }

    /**

    * 将压缩的bitmap保存到SDCard卡临时文件夹,用于上传

    *

    * @param filename

    * @param bit

    * @return

    */

    private static String saveMyBitmap(String filename, Bitmap bit) {

    String baseDir = Environment.getExternalStorageDirectory().getAbsolutePath()+"/laopai/";

    String filePath = baseDir + filename;

    File dir = new File(baseDir);

    if (!dir.exists()) {

    dir.mkdir();

    }

    File f = new File(filePath);

    try {

    f.createNewFile();

    FileOutputStream fOut = null;

    fOut = new FileOutputStream(f);

    bit.compress(Bitmap.CompressFormat.PNG, 100, fOut);

    fOut.flush();

    fOut.close();

    } catch (IOException e1) {

    e1.printStackTrace();

    }

    return filePath;

    }

    /**

    * 压缩上传路径

    * @param path

    * @return

    */

    public static String compressImageUpload(String path) {

    String filename = path.substring(path.lastIndexOf("/") + 1);

    Bitmap image = getImage(path);

    return saveMyBitmap(filename, image);

    }

    /**

    * 清除缓存文件

    */

    public static void deleteCacheFile(){

    File file = new File(Environment.getExternalStorageDirectory().getAbsolutePath()+"/laopai/");

    RecursionDeleteFile(file);

    }

    清除缓存文件

    */

    public static void deleteCacheFile(){

    File file = new File(Environment.getExternalStorageDirectory().getAbsolutePath()+"/laopai/");

    RecursionDeleteFile(file);

    }

    展开全文
  • Android studio 实现数据在数据库中的增删改查的java文件
  • 1.Android手机客户端,拍照(或选择图片),然后上传到服务器。 2.服务器端接收手机端上传上来的图片。 二、实现步骤: 1.按惯例,先放效果图: 项目结构: 2.activity_main.xml <?xml version=1.0 encoding=utf...
  • 最近要搞一个项目,需要上传相册和拍照的图片,不负所望,终于完成了! 不过需要说明一下,其实网上很多教程拍照的图片,都是缩略图不是很清晰,所以需要在调用照相机的时候,事先生成一个地址,用于标识拍照的图片...
  • 大家好我基本上在将2个按钮转换为1时遇到... 这里是我的代码:Android Studio上传按钮和提交按钮1public static final String UPLOAD_URL = "http://animotradings.000webhostapp.com/upload.php";public static fi...

    大家好我基本上在将2个按钮转换为1时遇到问题。 我有一个用于将图像上载到数据库的按钮,另一个用于将数据也上传到数据库。 这里是我的代码:Android Studio上传按钮和提交按钮1

    public static final String UPLOAD_URL = "http://animotradings.000webhostapp.com/upload.php";

    public static final String UPLOAD_KEY = "image";

    //Categories Spinner

    Spinner spinner;

    ArrayAdapter adapter;

    //Meet-up Spinner

    Spinner spinner2;

    ArrayAdapter adapter2;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_sell_activityy);

    //PhotoUpload

    buttonChoose = (Button) findViewById(R.id.buttonChoose);

    buttonUpload = (Button) findViewById(R.id.buttonUpload);

    imageView = (ImageView) findViewById(R.id.imageView);

    buttonChoose.setOnClickListener(this);

    buttonUpload.setOnClickListener(this);

    // Categories Spinner

    spinner = (Spinner)findViewById(sCategories);

    adapter = ArrayAdapter.createFromResource(this, R.array.category_types, android.R.layout.simple_spinner_item);

    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

    spinner.setAdapter(adapter);

    spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {

    @Override

    public void onItemSelected(AdapterView> parent, View view, int position, long id) {

    Toast.makeText(getBaseContext(), parent.getItemAtPosition(position)+" selected", Toast.LENGTH_LONG).show();

    }

    @Override

    public void onNothingSelected(AdapterView> parent) {

    }

    });

    // Meet-up Spinner

    spinner2 = (Spinner)findViewById(smeetup);

    adapter2 = ArrayAdapter.createFromResource(this, R.array.meetup_location, android.R.layout.simple_spinner_item);

    adapter2.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

    spinner2.setAdapter(adapter2);

    spinner2.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {

    @Override

    public void onItemSelected(AdapterView> parent, View view, int position, long id) {

    Toast.makeText(getBaseContext(), parent.getItemAtPosition(position)+" selected", Toast.LENGTH_LONG).show();

    }

    @Override

    public void onNothingSelected(AdapterView> parent) {

    }

    });

    final EditText etItemName = (EditText) findViewById(R.id.etItemName);

    final EditText etCondition = (EditText) findViewById(R.id.etCondition);

    final EditText etDescription = (EditText) findViewById(R.id.etDescription);

    final EditText etPrice = (EditText) findViewById(R.id.etPrice);

    final EditText etContact = (EditText) findViewById(R.id.etContact);

    final Spinner sCategories = (Spinner) findViewById (R.id.sCategories);

    final Spinner smeetup = (Spinner) findViewById (R.id.smeetup);

    final Button bSubmit = (Button) findViewById(R.id.bSubmit);

    bSubmit.setOnClickListener(new View.OnClickListener() {

    @Override

    public void onClick(View v) {

    final String item_name = etItemName.getText().toString();

    final String conditionn = etCondition.getText().toString();

    final String description = etDescription.getText().toString();

    final int price = Integer.parseInt(etPrice.getText().toString());

    final double contact = Double.parseDouble(etContact.getText().toString());

    final String categories = sCategories.getSelectedItem().toString();

    final String meetup = smeetup.getSelectedItem().toString();

    // Data Upload...

    Response.Listener responseListener= new Response.Listener(){

    @Override

    public void onResponse(String response) {

    try {

    JSONObject jsonResponse = new JSONObject(response);

    boolean success = jsonResponse.getBoolean("success");

    if (success){

    Intent intent = new Intent(SellActivityy.this, NavigationDrawer.class);

    SellActivityy.this.startActivity(intent);

    } else{

    AlertDialog.Builder builder = new AlertDialog.Builder(SellActivityy.this);

    builder.setMessage("Ad posting failed!")

    .setNegativeButton("Retry", null)

    .create()

    .show();

    }

    } catch (JSONException e) {

    e.printStackTrace();

    }

    }

    };

    SellRequest sellRequest = new SellRequest(item_name, conditionn, description, price, contact, categories, meetup, responseListener);

    RequestQueue queue = Volley.newRequestQueue(SellActivityy.this);

    queue.add(sellRequest);

    }

    });

    }

    //PhotoUpload

    private void showFileChooser() {

    Intent intent = new Intent();

    intent.setType("image/*");

    intent.setAction(Intent.ACTION_GET_CONTENT);

    startActivityForResult(Intent.createChooser(intent, "Select Picture"), PICK_IMAGE_REQUEST);

    }

    private int PICK_IMAGE_REQUEST = 1;

    private Button buttonChoose;

    private Button buttonUpload;

    private Button buttonView;

    private ImageView imageView;

    private Bitmap bitmap;

    private Uri filePath;

    @Override

    protected void onActivityResult(int requestCode, int resultCode, Intent data) {

    super.onActivityResult(requestCode, resultCode, data);

    if (requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK && data != null && data.getData() != null) {

    filePath = data.getData();

    try {

    bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), filePath);

    imageView.setImageBitmap(bitmap);

    } catch (IOException e) {

    e.printStackTrace();

    }

    }

    }

    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;

    }

    private void uploadImage(){

    // Picture Upload...

    class UploadImage extends AsyncTask {

    ProgressDialog loading;

    RequestHandler rh = new RequestHandler();

    @Override

    protected void onPreExecute() {

    super.onPreExecute();

    loading = ProgressDialog.show(SellActivityy.this, "Uploading...", null,true,true);

    }

    @Override

    protected void onPostExecute(String s) {

    super.onPostExecute(s);

    loading.dismiss();

    Toast.makeText(getApplicationContext(),s,Toast.LENGTH_LONG).show();

    }

    @Override

    protected String doInBackground(Bitmap... params) {

    Bitmap bitmap = params[0];

    String uploadImage = getStringImage(bitmap);

    HashMap data = new HashMap<>();

    data.put(UPLOAD_KEY, uploadImage);

    String result = rh.sendPostRequest(UPLOAD_URL,data);

    return result;

    }

    }

    UploadImage ui = new UploadImage();

    ui.execute(bitmap);

    }

    @Override

    public void onClick(View v) {

    if (v == buttonChoose) {

    showFileChooser();

    }

    if(v == buttonUpload){

    uploadImage();

    }

    private void viewImage() {

    startActivity(new Intent(this, ImageListView.class)); }}

    我试图转移内部bsubmit.onclicklistener代码,还试图改变的提交和上传按钮的代码,但至今没有成功。 对不起noob问题的家伙,我实际上是Android Studio的新手,并且无法适应。 我会继续尝试不同的代码,也许从头开始,但如果你们能帮助我,那会很棒。谢谢:d

    +0

    您面临的问题是什么? –

    +0

    无法找出您的问题或您的要求 –

    +0

    基本上,我有2个按钮,一个用于上传图片,另一个用于数据上传到数据库。 我试图将2个按钮转换为1,这样当我点击按钮时,我将能够同时上传图片和数据在数据库中。 –

    展开全文
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