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URI
具体上传代码：1.选择图片和上传界面，包括上传完成和异常的回调监听
package com.spring.sky.image.upload;import java.util.HashMap;import java.util.Map;import android.app.Activity;import android.app.ProgressDialog;import android.content.Intent;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.util.Log;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.ImageView;import android.widget.ProgressBar;import android.widget.TextView;import android.widget.Toast;import com.spring.sky.image.upload.network.UploadUtil;import com.spring.sky.image.upload.network.UploadUtil.OnUploadProcessListener;/** * @author spring sky * Email :vipa1888@163.com * QQ: 840950105 * 说明：主要用于选择文件和上传文件操作 */public class MainActivity extends Activity implements OnClickListener,OnUploadProcessListener{ private static final String TAG = "uploadImage"; /** * 去上传文件 */ protected static final int TO_UPLOAD_FILE = 1; /** * 上传文件响应 */ protected static final int UPLOAD_FILE_DONE = 2; // /** * 选择文件 */ public static final int TO_SELECT_PHOTO = 3; /** * 上传初始化 */ private static final int UPLOAD_INIT_PROCESS = 4; /** * 上传中 */ private static final int UPLOAD_IN_PROCESS = 5; /*** * 这里的这个URL是我服务器的javaEE环境URL */ private static String requestURL = "http://192.168.10.160:8080/fileUpload/p/file!upload"; private Button selectButton,uploadButton; private ImageView imageView; private TextView uploadImageResult; private ProgressBar progressBar; private String picPath = null; private ProgressDialog progressDialog; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); initView(); } /** * 初始化数据 */ private void initView() { selectButton = (Button) this.findViewById(R.id.selectImage); uploadButton = (Button) this.findViewById(R.id.uploadImage); selectButton.setOnClickListener(this); uploadButton.setOnClickListener(this); imageView = (ImageView) this.findViewById(R.id.imageView); uploadImageResult = (TextView) findViewById(R.id.uploadImageResult); progressDialog = new ProgressDialog(this); progressBar = (ProgressBar) findViewById(R.id.progressBar1); } @Override public void onClick(View v) { switch (v.getId()) { case R.id.selectImage: Intent intent = new Intent(this,SelectPicActivity.class); startActivityForResult(intent, TO_SELECT_PHOTO); break; case R.id.uploadImage: if(picPath!=null) { handler.sendEmptyMessage(TO_UPLOAD_FILE); }else{ Toast.makeText(this, "上传的文件路径出错", Toast.LENGTH_LONG).show(); } break; default: break; } } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { if(resultCode==Activity.RESULT_OK && requestCode == TO_SELECT_PHOTO) { picPath = data.getStringExtra(SelectPicActivity.KEY_PHOTO_PATH); Log.i(TAG, "最终选择的图片="+picPath); Bitmap bm = BitmapFactory.decodeFile(picPath); imageView.setImageBitmap(bm); } super.onActivityResult(requestCode, resultCode, data); } /** * 上传服务器响应回调 */ @Override public void onUploadDone(int responseCode, String message) { progressDialog.dismiss(); Message msg = Message.obtain(); msg.what = UPLOAD_FILE_DONE; msg.arg1 = responseCode; msg.obj = message; handler.sendMessage(msg); } private void toUploadFile() { uploadImageResult.setText("正在上传中..."); progressDialog.setMessage("正在上传文件..."); progressDialog.show(); String fileKey = "pic"; UploadUtil uploadUtil = UploadUtil.getInstance();; uploadUtil.setOnUploadProcessListener(this); //设置监听器监听上传状态 Map params = new HashMap (); params.put("orderId", "11111"); uploadUtil.uploadFile( picPath,fileKey, requestURL,params); } private Handler handler = new Handler(){ @Override public void handleMessage(Message msg) { switch (msg.what) { case TO_UPLOAD_FILE: toUploadFile(); break; case UPLOAD_INIT_PROCESS: progressBar.setMax(msg.arg1); break; case UPLOAD_IN_PROCESS: progressBar.setProgress(msg.arg1); break; case UPLOAD_FILE_DONE: String result = "响应码："+msg.arg1+"\n响应信息："+msg.obj+"\n耗时："+UploadUtil.getRequestTime()+"秒"; uploadImageResult.setText(result); break; default: break; } super.handleMessage(msg); } }; @Override public void onUploadProcess(int uploadSize) { Message msg = Message.obtain(); msg.what = UPLOAD_IN_PROCESS; msg.arg1 = uploadSize; handler.sendMessage(msg ); } @Override public void initUpload(int fileSize) { Message msg = Message.obtain(); msg.what = UPLOAD_INIT_PROCESS; msg.arg1 = fileSize; handler.sendMessage(msg ); } } 2.选择图片界面，主要涉及两种方式：选择图片和及时拍照图片
package com.spring.sky.image.upload;import android.app.Activity;import android.content.ContentValues;import android.content.Intent;import android.database.Cursor;import android.net.Uri;import android.os.Bundle;import android.os.Environment;import android.provider.MediaStore;import android.util.Log;import android.view.MotionEvent;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.LinearLayout;import android.widget.Toast;/** * @author spring sky * Email :vipa1888@163.com * QQ: 840950105 * @version 创建时间：2012-11-22 上午9:20:03 * 说明：主要用于选择文件操作 */public class SelectPicActivity extends Activity implements OnClickListener{ /*** * 使用照相机拍照获取图片 */ public static final int SELECT_PIC_BY_TACK_PHOTO = 1; /*** * 使用相册中的图片 */ public static final int SELECT_PIC_BY_PICK_PHOTO = 2; /*** * 从Intent获取图片路径的KEY */ public static final String KEY_PHOTO_PATH = "photo_path"; private static final String TAG = "SelectPicActivity"; private LinearLayout dialogLayout; private Button takePhotoBtn,pickPhotoBtn,cancelBtn; /**获取到的图片路径*/ private String picPath; private Intent lastIntent ; private Uri photoUri; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.select_pic_layout); initView(); } /** * 初始化加载View */ private void initView() { dialogLayout = (LinearLayout) findViewById(R.id.dialog_layout); dialogLayout.setOnClickListener(this); takePhotoBtn = (Button) findViewById(R.id.btn_take_photo); takePhotoBtn.setOnClickListener(this); pickPhotoBtn = (Button) findViewById(R.id.btn_pick_photo); pickPhotoBtn.setOnClickListener(this); cancelBtn = (Button) findViewById(R.id.btn_cancel); cancelBtn.setOnClickListener(this); lastIntent = getIntent(); } @Override public void onClick(View v) { switch (v.getId()) { case R.id.dialog_layout: finish(); break; case R.id.btn_take_photo: takePhoto(); break; case R.id.btn_pick_photo: pickPhoto(); break; default: finish(); break; } } /** * 拍照获取图片 */ private void takePhoto() { //执行拍照前，应该先判断SD卡是否存在 String SDState = Environment.getExternalStorageState(); if(SDState.equals(Environment.MEDIA_MOUNTED)) { Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);//"android.media.action.IMAGE_CAPTURE" /*** * 需要说明一下，以下操作使用照相机拍照，拍照后的图片会存放在相册中的 * 这里使用的这种方式有一个好处就是获取的图片是拍照后的原图 * 如果不实用ContentValues存放照片路径的话，拍照后获取的图片为缩略图不清晰 */ ContentValues values = new ContentValues(); photoUri = this.getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values); intent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, photoUri); /**-----------------*/ startActivityForResult(intent, SELECT_PIC_BY_TACK_PHOTO); }else{ Toast.makeText(this,"内存卡不存在", Toast.LENGTH_LONG).show(); } } /*** * 从相册中取图片 */ private void pickPhoto() { Intent intent = new Intent(); intent.setType("image/*"); intent.setAction(Intent.ACTION_GET_CONTENT); startActivityForResult(intent, SELECT_PIC_BY_PICK_PHOTO); } @Override public boolean onTouchEvent(MotionEvent event) { finish(); return super.onTouchEvent(event); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { if(resultCode == Activity.RESULT_OK) { doPhoto(requestCode,data); } super.onActivityResult(requestCode, resultCode, data); } /** * 选择图片后，获取图片的路径 * @param requestCode * @param data */ private void doPhoto(int requestCode,Intent data) { if(requestCode == SELECT_PIC_BY_PICK_PHOTO ) //从相册取图片，有些手机有异常情况，请注意 { if(data == null) { Toast.makeText(this, "选择图片文件出错", Toast.LENGTH_LONG).show(); return; } photoUri = data.getData(); if(photoUri == null ) { Toast.makeText(this, "选择图片文件出错", Toast.LENGTH_LONG).show(); return; } } String[] pojo = {MediaStore.Images.Media.DATA}; Cursor cursor = managedQuery(photoUri, pojo, null, null,null); if(cursor != null ) { int columnIndex = cursor.getColumnIndexOrThrow(pojo[0]); cursor.moveToFirst(); picPath = cursor.getString(columnIndex); cursor.close(); } Log.i(TAG, "imagePath = "+picPath); if(picPath != null && ( picPath.endsWith(".png") || picPath.endsWith(".PNG") ||picPath.endsWith(".jpg") ||picPath.endsWith(".JPG") )) { lastIntent.putExtra(KEY_PHOTO_PATH, picPath); setResult(Activity.RESULT_OK, lastIntent); finish(); }else{ Toast.makeText(this, "选择图片文件不正确", Toast.LENGTH_LONG).show(); } }} 3. 上传工具类，主要实现了图片的上传，上传过程的初始化监听和上传完成的监听，还有上传耗时的计算
package com.spring.sky.image.upload.network;import java.io.DataOutputStream;import java.io.File;import java.io.FileInputStream;import java.io.IOException;import java.io.InputStream;import java.net.HttpURLConnection;import java.net.MalformedURLException;import java.net.URL;import java.util.Iterator;import java.util.Map;import java.util.UUID;import android.util.Log;/** * * 上传工具类 * @author spring sky * Email :vipa1888@163.com * QQ: 840950105 * 支持上传文件和参数 */public class UploadUtil { private static UploadUtil uploadUtil; private static final String BOUNDARY = UUID.randomUUID().toString(); // 边界标识 随机生成 private static final String PREFIX = "--"; private static final String LINE_END = "\r\n"; private static final String CONTENT_TYPE = "multipart/form-data"; // 内容类型 private UploadUtil() { } /** * 单例模式获取上传工具类 * @return */ public static UploadUtil getInstance() { if (null == uploadUtil) { uploadUtil = new UploadUtil(); } return uploadUtil; } private static final String TAG = "UploadUtil"; private int readTimeOut = 10 * 1000; // 读取超时 private int connectTimeout = 10 * 1000; // 超时时间 /*** * 请求使用多长时间 */ private static int requestTime = 0; private static final String CHARSET = "utf-8"; // 设置编码 /*** * 上传成功 */ public static final int UPLOAD_SUCCESS_CODE = 1; /** * 文件不存在 */ public static final int UPLOAD_FILE_NOT_EXISTS_CODE = 2; /** * 服务器出错 */ public static final int UPLOAD_SERVER_ERROR_CODE = 3; protected static final int WHAT_TO_UPLOAD = 1; protected static final int WHAT_UPLOAD_DONE = 2; /** * android上传文件到服务器 * * @param filePath * 需要上传的文件的路径 * @param fileKey * 在网页上 param) { if (filePath == null) { sendMessage(UPLOAD_FILE_NOT_EXISTS_CODE,"文件不存在"); return; } try { File file = new File(filePath); uploadFile(file, fileKey, RequestURL, param); } catch (Exception e) { sendMessage(UPLOAD_FILE_NOT_EXISTS_CODE,"文件不存在"); e.printStackTrace(); return; } } /** * android上传文件到服务器 * * @param file * 需要上传的文件 * @param fileKey * 在网页上 param) { if (file == null || (!file.exists())) { sendMessage(UPLOAD_FILE_NOT_EXISTS_CODE,"文件不存在"); return; } Log.i(TAG, "请求的URL=" + RequestURL); Log.i(TAG, "请求的fileName=" + file.getName()); Log.i(TAG, "请求的fileKey=" + fileKey); new Thread(new Runnable() { //开启线程上传文件 @Override public void run() { toUploadFile(file, fileKey, RequestURL, param); } }).start(); } private void toUploadFile(File file, String fileKey, String RequestURL, Map param) { String result = null; requestTime= 0; long requestTime = System.currentTimeMillis(); long responseTime = 0; try { URL url = new URL(RequestURL); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setReadTimeout(readTimeOut); conn.setConnectTimeout(connectTimeout); conn.setDoInput(true); // 允许输入流 conn.setDoOutput(true); // 允许输出流 conn.setUseCaches(false); // 不允许使用缓存 conn.setRequestMethod("POST"); // 请求方式 conn.setRequestProperty("Charset", CHARSET); // 设置编码 conn.setRequestProperty("connection", "keep-alive"); conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)"); conn.setRequestProperty("Content-Type", CONTENT_TYPE + ";boundary=" + BOUNDARY);// conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); /** * 当文件不为空，把文件包装并且上传 */ DataOutputStream dos = new DataOutputStream(conn.getOutputStream()); StringBuffer sb = null; String params = ""; /*** * 以下是用于上传参数 */ if (param != null && param.size() > 0) { Iterator it = param.keySet().iterator(); while (it.hasNext()) { sb = null; sb = new StringBuffer(); String key = it.next(); String value = param.get(key); sb.append(PREFIX).append(BOUNDARY).append(LINE_END); sb.append("Content-Disposition: form-data; name=\"").append(key).append("\"").append(LINE_END).append(LINE_END); sb.append(value).append(LINE_END); params = sb.toString(); Log.i(TAG, key+"="+params+"##"); dos.write(params.getBytes());// dos.flush(); } } sb = null; params = null; sb = new StringBuffer(); /** * 这里重点注意： name里面的值为服务器端需要key 只有这个key 才可以得到对应的文件 * filename是文件的名字，包含后缀名的 比如:abc.png */ sb.append(PREFIX).append(BOUNDARY).append(LINE_END); sb.append("Content-Disposition:form-data; name=\"" + fileKey + "\"; filename=\"" + file.getName() + "\"" + LINE_END); sb.append("Content-Type:image/pjpeg" + LINE_END); // 这里配置的Content-type很重要的 ，用于服务器端辨别文件的类型的 sb.append(LINE_END); params = sb.toString(); sb = null; Log.i(TAG, file.getName()+"=" + params+"##"); dos.write(params.getBytes()); /**上传文件*/ InputStream is = new FileInputStream(file); onUploadProcessListener.initUpload((int)file.length()); byte[] bytes = new byte[1024]; int len = 0; int curLen = 0; while ((len = is.read(bytes)) != -1) { curLen += len; dos.write(bytes, 0, len); onUploadProcessListener.onUploadProcess(curLen); } is.close(); dos.write(LINE_END.getBytes()); byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINE_END).getBytes(); dos.write(end_data); dos.flush();// // dos.write(tempOutputStream.toByteArray()); /** * 获取响应码 200=成功 当响应成功，获取响应的流 */ int res = conn.getResponseCode(); responseTime = System.currentTimeMillis(); this.requestTime = (int) ((responseTime-requestTime)/1000); Log.e(TAG, "response code:" + res); if (res == 200) { Log.e(TAG, "request success"); InputStream input = conn.getInputStream(); StringBuffer sb1 = new StringBuffer(); int ss; while ((ss = input.read()) != -1) { sb1.append((char) ss); } result = sb1.toString(); Log.e(TAG, "result : " + result); sendMessage(UPLOAD_SUCCESS_CODE, "上传结果：" + result); return; } else { Log.e(TAG, "request error"); sendMessage(UPLOAD_SERVER_ERROR_CODE,"上传失败：code=" + res); return; } } catch (MalformedURLException e) { sendMessage(UPLOAD_SERVER_ERROR_CODE,"上传失败：error=" + e.getMessage()); e.printStackTrace(); return; } catch (IOException e) { sendMessage(UPLOAD_SERVER_ERROR_CODE,"上传失败：error=" + e.getMessage()); e.printStackTrace(); return; } } /** * 发送上传结果 * @param responseCode * @param responseMessage */ private void sendMessage(int responseCode,String responseMessage) { onUploadProcessListener.onUploadDone(responseCode, responseMessage); } /** * 下面是一个自定义的回调函数，用到回调上传文件是否完成 * * @author shimingzheng * */ public static interface OnUploadProcessListener { /** * 上传响应 * @param responseCode * @param message */ void onUploadDone(int responseCode, String message); /** * 上传中 * @param uploadSize */ void onUploadProcess(int uploadSize); /** * 准备上传 * @param fileSize */ void initUpload(int fileSize); } private OnUploadProcessListener onUploadProcessListener; public void setOnUploadProcessListener( OnUploadProcessListener onUploadProcessListener) { this.onUploadProcessListener = onUploadProcessListener; } public int getReadTimeOut() { return readTimeOut; } public void setReadTimeOut(int readTimeOut) { this.readTimeOut = readTimeOut; } public int getConnectTimeout() { return connectTimeout; } public void setConnectTimeout(int connectTimeout) { this.connectTimeout = connectTimeout; } /** * 获取上传使用的时间 * @return */ public static int getRequestTime() { return requestTime; } public static interface uploadProcessListener{ } }
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以上代码，我就不详细讲解原理，相关难点注释已经写得很清楚了！分享出来，和大家一起学习！
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