图片上传

来源：互联网发布：知敬畏明底线心得体会编辑：程序博客网时间：2024/04/30 04:42

选择本地图片，并上传到服务器：

/** 图片上传* */public class MainActivity extends Activity implements View.OnClickListener {    private Button selectImage,uploadImage;    private ImageView imageView;    private TextView tv_picName,tv_picPath;    public static final String requestURL = "http://103.8.220.166:40000/lechu/device/image/fileupload";    public static final String SUCCESS="00000";    public static final String FAILURE="00001";    private String picPath = null;    private String picName = null;    public String displayMessage,retCode,retInfo;    private static final String TAG = "uploadImage";    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //选择图片按钮        selectImage = (Button) this.findViewById(R.id.btn_select);        //上传按钮        uploadImage = (Button) this.findViewById(R.id.btn_upload);        //图片显示        selectImage.setOnClickListener(this);        uploadImage.setOnClickListener(this);        imageView = (ImageView) this.findViewById(R.id.iv_selected);        //String str = BaseStrem.GetImgPath();        //显示图片名称        tv_picName = (TextView)findViewById(R.id.tv_picName);        //显示图片路径        tv_picPath = (TextView)findViewById(R.id.tv_picPath);    }    @Override    public void onClick(View v) {        switch (v.getId()){            case R.id.btn_select:                Intent intent = new Intent();                intent.setType("image/*");                intent.setAction(Intent.ACTION_GET_CONTENT);                //回调图片类使用                startActivityForResult(intent,RESULT_CANCELED);                break;            case R.id.btn_upload:                final MyHandler myHandler = new MyHandler();                if(picPath!=null && picPath.length()>0){                    //对网络的访问要在单独的线程中操作，并利用handler在线程间传递数据                    new Thread(){                        public void run(){                            Looper.prepare();                            //displayMessage是一个的字符串，{"retCode":"00000","retInfo":"操作成功","retResult":""}                            FileUtil fileUtil = new FileUtil();                            displayMessage = fileUtil.uploadFilePost(picPath,getLocalMac(),requestURL);                            //displayMessage = upLoadFile(picName,picPath,requestURL);                            try{                                JSONObject jsonObject1 = new JSONObject(displayMessage);                                retCode = jsonObject1.get("retCode").toString();                                retInfo = jsonObject1.get("retInfo").toString();                            }catch (Exception ex){                                ex.printStackTrace();                            }                            Bundle bundle = new Bundle();                            bundle.putString("retCode",retCode);                            bundle.putString("retInfo",retInfo);                            Message msg = new Message();                            msg.setData(bundle);                            myHandler.sendMessage(msg);                        }                    }.start();                }                break;        }    }    //回传图片信息    protected void onActivityResult(int requestCode,int resultCode,Intent data){        super.onActivityResult(requestCode, resultCode, data);        if(resultCode == Activity.RESULT_OK){            Uri uri = data.getData();            Log.e(TAG,"uri="+uri);            try{                String[] pojo = {MediaStore.Images.Media.DATA};                Cursor cursor = managedQuery(uri,pojo,null,null,null);                if(cursor!=null){                    ContentResolver cr = this.getContentResolver();                    int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);                    cursor.moveToFirst();                    String path = cursor.getString(column_index);                    //获取图片名称                    String[] name = path.split("/");                    picName = name[name.length-1];                    tv_picName.setText(picName+"=="+getLocalMac());                    //当图片为jpg或png格式时显示图片                    if(path.endsWith("jpg")||path.endsWith("png")){                        picPath = path;                        Bitmap bitmap = BitmapFactory.decodeStream(cr.openInputStream(uri));                        imageView.setImageBitmap(bitmap);                        Log.i("pictruedetail",picPath+"==="+picName);                        tv_picPath.setText(picPath);                    }else{                        alert();                    }                }            }catch (Exception ex){                ex.printStackTrace();            }        }    }    private void alert()    {        Dialog dialog = new AlertDialog.Builder(this)                .setTitle("提示")                .setMessage("您选择的不是有效的图片")                .setPositiveButton("确定",                        new DialogInterface.OnClickListener() {                            public void onClick(DialogInterface dialog,                                                int which) {                                picPath = null;                            }                        })                .create();        dialog.show();    }    //获取设备的MAC地址    public String getLocalMac(){        WifiManager wifiManager = (WifiManager)getSystemService(WIFI_SERVICE);        WifiInfo info = wifiManager.getConnectionInfo();        return info.getMacAddress();    }    class MyHandler extends Handler{        public MyHandler(){        }        public MyHandler(Looper looper){            super(looper);        }        public void handleMessage(Message msg) {            retCode = msg.getData().getString("retCode");            if(retCode.equals("00000")){                Toast.makeText(MainActivity.this,msg.getData().getString("retInfo"),Toast.LENGTH_SHORT).show();            }else{                Toast.makeText(MainActivity.this,"操作失败",Toast.LENGTH_SHORT).show();            }        }    }    //图片上传，参数图片名称，图片路径，请求url    public String upLoadFile(String picName1,String picPath1,String requestURL){        String retCode=null;        String displayStr = null;        JSONObject totalJson = new JSONObject();        JSONArray jsonArray = new JSONArray();        JSONObject jsonObject = new JSONObject();        try{            jsonObject.put("cameraId",1);            jsonObject.put("pictureName",picName1);            //jsonObject.put("pictureData",picPath1);            jsonObject.put("pictureData",BaseStrem.GetImgPath(picPath1));            //将JSON对象放到数组中            jsonArray.put(jsonObject);            //将数组再封装到总的JSON中            totalJson.put("pictures",jsonArray);            //获取MAC地址，并转换成小写不带:的形式            String[] macAddr = getLocalMac().toLowerCase().split(":");            String mac="";            for(int i=0;i<macAddr.length;i++){                mac = mac+macAddr[i];            }            totalJson.put("deviceId",mac);            Log.i("JSONMAC",mac);        }catch (Exception ex){            ex.printStackTrace();        }        Log.i("JSON", totalJson.toString());        HttpClient client = new DefaultHttpClient();        HttpPost post = new HttpPost(requestURL);        try{            StringEntity entity = new StringEntity(totalJson.toString());            post.setEntity(entity);            HttpResponse responseStr = client.execute(post);            HttpEntity httpEntity = responseStr.getEntity();            displayStr = EntityUtils.toString(httpEntity);            Log.i("passStr", displayStr);        }catch (Exception ex){            ex.printStackTrace();        }        return displayStr;    }}

布局文件：

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">    <Button        android:id="@+id/btn_select"        android:text="选择图片"        android:layout_width="match_parent"        android:layout_height="wrap_content" />    <Button        android:text="上传图片"        android:id="@+id/btn_upload"        android:layout_below="@+id/btn_select"        android:layout_width="match_parent"        android:layout_height="wrap_content" />    <ImageView        android:id="@+id/iv_selected"        android:layout_below="@+id/btn_upload"        android:layout_width="match_parent"        android:layout_height="wrap_content" />    <TextView        android:id="@+id/tv_picName"        android:layout_below="@+id/iv_selected"        android:layout_width="wrap_content"        android:layout_height="wrap_content" />    <TextView        android:id="@+id/tv_picPath"        android:layout_below="@+id/tv_picName"        android:layout_width="wrap_content"        android:layout_height="wrap_content" /></RelativeLayout>

转换成Base64:

package com.h.fileinput;import java.io.ByteArrayOutputStream;import java.io.File;import java.io.IOException;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.util.Base64;public class BaseStrem{         //获得Base流的方法   public static String GetImgPath(String imgpath){            Bitmap bitmap=null;      String imgstrem=null;      bitmap=getDiskBitmap(imgpath);      imgstrem=bitmapToBase64(bitmap);            return imgstrem;   }         //传图片地址返回一个BitMap   public static Bitmap getDiskBitmap(String pathString)     {         Bitmap bitmap = null;         try         {             File file = new File(pathString);             if(file.exists())             {                 bitmap = BitmapFactory.decodeFile(pathString);             }         } catch (Exception e)         {             // TODO: handle exception         }                           return bitmap;     }           //传BitMap返回Base64流   public static  String bitmapToBase64(Bitmap bitmap) {                 String result = null;         ByteArrayOutputStream baos = null;         try {             if (bitmap != null) {                 baos = new ByteArrayOutputStream();                 bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);                      baos.flush();                 baos.close();                      byte[] bitmapBytes = baos.toByteArray();                 result = Base64.encodeToString(bitmapBytes, Base64.DEFAULT);             }         } catch (IOException e) {             e.printStackTrace();         } finally {             try {                 if (baos != null) {                     baos.flush();                     baos.close();                 }             } catch (IOException e) {                 e.printStackTrace();             }         }         return result;     }        //传入Base64流返回一个BitMap   public static Bitmap stringtoBitmap(String string) {      // 将字符串转换成Bitmap类型      Bitmap bitmap = null;      try {         byte[] bitmapArray;         bitmapArray = Base64.decode(string, Base64.DEFAULT);         bitmap = BitmapFactory.decodeByteArray(bitmapArray, 0,               bitmapArray.length);      } catch (Exception e) {         e.printStackTrace();      }      return bitmap;   }}

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