android应用——图片获取（调用相机或者从相册获取）、裁剪并上传至服务端，适用于头像设置等

1、客户端获取图片

import java.io.ByteArrayOutputStream;import java.io.File;import java.util.ArrayList;import java.util.List;import org.apache.http.HttpResponse;import org.apache.http.HttpStatus;import org.apache.http.NameValuePair;import org.apache.http.client.HttpClient;import org.apache.http.client.entity.UrlEncodedFormEntity;import org.apache.http.client.methods.HttpPost;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.message.BasicNameValuePair;import org.apache.http.util.EntityUtils;import android.annotation.SuppressLint;import android.app.Activity;import android.app.AlertDialog;import android.content.DialogInterface;import android.content.Intent;import android.graphics.Bitmap;import android.graphics.drawable.BitmapDrawable;import android.graphics.drawable.Drawable;import android.net.Uri;import android.os.Bundle;import android.os.Environment;import android.os.Handler;import android.os.Message;import android.provider.MediaStore;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.ImageView;import android.widget.RelativeLayout;import android.widget.TextView;import android.widget.Toast;import com.farsunset.ichat.app.Constant;import com.farsunset.ichat.util.Base64Coder;import com.farsunset.ichat.util.Util;public class SettingActivity extends Activity {private ImageView icon;private RelativeLayout imageSwitch;private String tp = null;private Button uploadButton;private TextView toptitle;@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);setContentView(R.layout.activity_setting);findViews();setListeners();}private void findViews() {icon = (ImageView) findViewById(R.id.icon);imageSwitch = (RelativeLayout) findViewById(R.id.iconSwicth);uploadButton = (Button) findViewById(R.id.reg_btn);toptitle = (TextView) findViewById(R.id.top_title);toptitle.setText("设置");}private void setListeners() {icon.setOnClickListener(new MyIconOnclickListener());icon.setImageBitmap(Util.photo);imageSwitch.setOnClickListener(new MyIconOnclickListener());uploadButton.setOnClickListener(new MyUploadListener());}class MyUploadListener implements OnClickListener {@Overridepublic void onClick(View v) {Mythread mythread = new Mythread();mythread.start();}}class MyIconOnclickListener implements OnClickListener {@Overridepublic void onClick(View v) {ShowPickDialog();}}/*** 选择提示对话框*/private void ShowPickDialog() {new AlertDialog.Builder(this).setTitle("设置头像...").setNegativeButton("相册", new DialogInterface.OnClickListener() {public void onClick(DialogInterface dialog, int which) {dialog.dismiss();Intent intent = new Intent(Intent.ACTION_PICK, null);intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,"image/*");startActivityForResult(intent, 1);}}).setPositiveButton("拍照", new DialogInterface.OnClickListener() {public void onClick(DialogInterface dialog, int whichButton) {dialog.dismiss();Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);// 下面这句指定调用相机拍照后的照片存储的路径intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(Environment.getExternalStorageDirectory(),"xiaoma.jpg")));startActivityForResult(intent, 2);}}).show();}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {switch (requestCode) {// 如果是直接从相册获取case 1:startPhotoZoom(data.getData());break;// 如果是调用相机拍照时case 2:File temp = new File(Environment.getExternalStorageDirectory()+ "/xiaoma.jpg");startPhotoZoom(Uri.fromFile(temp));break;// 取得裁剪后的图片case 3:if (data != null) {setPicToView(data);}break;default:break;}super.onActivityResult(requestCode, resultCode, data);}/*** 裁剪图片方法实现* * @param uri*/public void startPhotoZoom(Uri uri) {Intent intent = new Intent("com.android.camera.action.CROP");intent.setDataAndType(uri, "image/*");// 下面这个crop=true是设置在开启的Intent中设置显示的VIEW可裁剪intent.putExtra("crop", "true");// aspectX aspectY 是宽高的比例intent.putExtra("aspectX", 1);intent.putExtra("aspectY", 1);// outputX outputY 是裁剪图片宽高intent.putExtra("outputX", 150);intent.putExtra("outputY", 150);intent.putExtra("return-data", true);startActivityForResult(intent, 3);}/*** 保存裁剪之后的图片数据* * @param picdata*/private void setPicToView(Intent picdata) {Bundle extras = picdata.getExtras();if (extras != null) {Bitmap photo = extras.getParcelable("data");icon.setImageBitmap(photo);Drawable drawable = new BitmapDrawable(photo);/*** 下面注释的方法是将裁剪之后的图片以Base64Coder的字符方式上 传到服务器，QQ头像上传采用的方法跟这个类似*/ByteArrayOutputStream stream = new ByteArrayOutputStream();photo.compress(Bitmap.CompressFormat.JPEG, 60, stream);byte[] b = stream.toByteArray();// 将图片流以字符串形式存储下来tp = new String(Base64Coder.encodeLines(b));// 通过httpClient将图片传递到服务器端/** 如果下载到的服务器的数据还是以Base64Coder的形式的话，可以用以下方式转换* Bitmap dBitmap = BitmapFactory.decodeFile(tp); Drawable drawable* = new BitmapDrawable(dBitmap);*/// icon.setBackgroundDrawable(drawable);// iv.setBackgroundDrawable(drawable);}}class Mythread extends Thread {@Overridepublic void run() {try {/* HttpURLClient连接Servlet */System.out.println("1");String uri = Constant.SERVER_URL + "/UploadPhotoServlet";HttpClient client = new DefaultHttpClient();HttpPost request = new HttpPost(uri);System.out.println("2");List<NameValuePair> list = new ArrayList<NameValuePair>();list.add(new BasicNameValuePair("photo", tp));list.add(new BasicNameValuePair("account", Util.maccount));request.setEntity(new UrlEncodedFormEntity(list));System.out.println("3");HttpResponse response = client.execute(request);if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {String result = EntityUtils.toString(response.getEntity());System.out.println("servlet返回的结果" + result);Message msg = new Message();Bundle bundle = new Bundle();bundle.putString("result", result);msg.setData(bundle);handler.sendMessage(msg);}} catch (Exception e) {e.printStackTrace();}}}@SuppressLint("HandlerLeak")private Handler handler = new Handler() {@Overridepublic void handleMessage(Message msg) {super.handleMessage(msg);Bundle bundle = msg.getData();String res = bundle.getString("result");if ("success".equals(res.trim())) {Toast.makeText(SettingActivity.this, "success", 1).show();} else {Toast.makeText(SettingActivity.this, "error", 1).show();}}};}

2、服务端接受图片资源，此处使用的是Servlet来处理，获取的图片资源保存在tomcat内，名称保存到数据库。

import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import com.farsunset.ichat.dao.UserDao;import com.farsunset.ichat.util.Base64Coder;public class UploadPhotoServlet extends HttpServlet {@Overrideprotected void doGet(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException {this.doPost(request, response);}@Overrideprotected void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException {request.setCharacterEncoding("utf-8");response.setCharacterEncoding("utf-8");response.setContentType("text/html");PrintWriter writer = response.getWriter();UserDao userdao = new UserDao();String photo = request.getParameter("photo");String account = request.getParameter("account");System.out.println("服务端接收到图片");boolean bool = false;// 将图片保存到云端，把名字保存到数据库。try {// 对base64数据进行解码byte[] decode = Base64Coder.decodeLines(photo);//将图片资源保存在tomcat里面File file = new File("c:/Program Files/Apache Software Foundation/Tomcat 6.0/webapps/ichatPhotos/"+ account + ".png");if (!file.exists()) {file.createNewFile();}FileOutputStream out = new FileOutputStream(file);out.write(decode);out.flush();out.close();//图片名称.png保存到数据库bool = userdao.updatePhoto(account + ".png", account);if (bool) {writer.println("success");} else {writer.println("error");}} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();writer.println("error");}writer.close();}}

3、在客户端和服务端均引入该工具类

/** * A Base64 encoder/decoder. * * <p> * This class is used to encode and decode data in Base64 format as described in RFC 1521. * * <p> * Project home page: <a href="http://www.source-code.biz/base64coder/java/">www.source-code.biz/base64coder/java</a><br> * Author: Christian d'Heureuse, Inventec Informatik AG, Zurich, Switzerland<br> * Multi-licensed: EPL / LGPL / GPL / AL / BSD. *//** * @Title: Base64Coder.java * @Package com.xiaoma.piccut.demo * @Description: TODO * @author XiaoMa */public class Base64Coder {// The line separator string of the operating system.private static final String systemLineSeparator = System.getProperty("line.separator");// Mapping table from 6-bit nibbles to Base64 characters.private static char[] map1 = new char[64];static {int i = 0;for (char c = 'A'; c <= 'Z'; c++)map1[i++] = c;for (char c = 'a'; c <= 'z'; c++)map1[i++] = c;for (char c = '0'; c <= '9'; c++)map1[i++] = c;map1[i++] = '+';map1[i++] = '/';}// Mapping table from Base64 characters to 6-bit nibbles.private static byte[] map2 = new byte[128];static {for (int i = 0; i < map2.length; i++)map2[i] = -1;for (int i = 0; i < 64; i++)map2[map1[i]] = (byte) i;}/*** Encodes a string into Base64 format. No blanks or line breaks are* inserted.* * @param s*            A String to be encoded.* @return A String containing the Base64 encoded data.*/public static String encodeString(String s) {return new String(encode(s.getBytes()));}/*** Encodes a byte array into Base 64 format and breaks the output into lines* of 76 characters. This method is compatible with* <code>sun.misc.BASE64Encoder.encodeBuffer(byte[])</code>.* * @param in*            An array containing the data bytes to be encoded.* @return A String containing the Base64 encoded data, broken into lines.*/public static String encodeLines(byte[] in) {return encodeLines(in, 0, in.length, 76, systemLineSeparator);}/*** Encodes a byte array into Base 64 format and breaks the output into* lines.* * @param in*            An array containing the data bytes to be encoded.* @param iOff*            Offset of the first byte in <code>in</code> to be processed.* @param iLen*            Number of bytes to be processed in <code>in</code>, starting*            at <code>iOff</code>.* @param lineLen*            Line length for the output data. Should be a multiple of 4.* @param lineSeparator*            The line separator to be used to separate the output lines.* @return A String containing the Base64 encoded data, broken into lines.*/public static String encodeLines(byte[] in, int iOff, int iLen,int lineLen, String lineSeparator) {int blockLen = (lineLen * 3) / 4;if (blockLen <= 0)throw new IllegalArgumentException();int lines = (iLen + blockLen - 1) / blockLen;int bufLen = ((iLen + 2) / 3) * 4 + lines * lineSeparator.length();StringBuilder buf = new StringBuilder(bufLen);int ip = 0;while (ip < iLen) {int l = Math.min(iLen - ip, blockLen);buf.append(encode(in, iOff + ip, l));buf.append(lineSeparator);ip += l;}return buf.toString();}/*** Encodes a byte array into Base64 format. No blanks or line breaks are* inserted in the output.* * @param in*            An array containing the data bytes to be encoded.* @return A character array containing the Base64 encoded data.*/public static char[] encode(byte[] in) {return encode(in, 0, in.length);}/*** Encodes a byte array into Base64 format. No blanks or line breaks are* inserted in the output.* * @param in*            An array containing the data bytes to be encoded.* @param iLen*            Number of bytes to process in <code>in</code>.* @return A character array containing the Base64 encoded data.*/public static char[] encode(byte[] in, int iLen) {return encode(in, 0, iLen);}/*** Encodes a byte array into Base64 format. No blanks or line breaks are* inserted in the output.* * @param in*            An array containing the data bytes to be encoded.* @param iOff*            Offset of the first byte in <code>in</code> to be processed.* @param iLen*            Number of bytes to process in <code>in</code>, starting at*            <code>iOff</code>.* @return A character array containing the Base64 encoded data.*/public static char[] encode(byte[] in, int iOff, int iLen) {int oDataLen = (iLen * 4 + 2) / 3; // output length without paddingint oLen = ((iLen + 2) / 3) * 4; // output length including paddingchar[] out = new char[oLen];int ip = iOff;int iEnd = iOff + iLen;int op = 0;while (ip < iEnd) {int i0 = in[ip++] & 0xff;int i1 = ip < iEnd ? in[ip++] & 0xff : 0;int i2 = ip < iEnd ? in[ip++] & 0xff : 0;int o0 = i0 >>> 2;int o1 = ((i0 & 3) << 4) | (i1 >>> 4);int o2 = ((i1 & 0xf) << 2) | (i2 >>> 6);int o3 = i2 & 0x3F;out[op++] = map1[o0];out[op++] = map1[o1];out[op] = op < oDataLen ? map1[o2] : '=';op++;out[op] = op < oDataLen ? map1[o3] : '=';op++;}return out;}/*** Decodes a string from Base64 format. No blanks or line breaks are allowed* within the Base64 encoded input data.* * @param s*            A Base64 String to be decoded.* @return A String containing the decoded data.* @throws IllegalArgumentException*             If the input is not valid Base64 encoded data.*/public static String decodeString(String s) {return new String(decode(s));}/*** Decodes a byte array from Base64 format and ignores line separators, tabs* and blanks. CR, LF, Tab and Space characters are ignored in the input* data. This method is compatible with* <code>sun.misc.BASE64Decoder.decodeBuffer(String)</code>.* * @param s*            A Base64 String to be decoded.* @return An array containing the decoded data bytes.* @throws IllegalArgumentException*             If the input is not valid Base64 encoded data.*/public static byte[] decodeLines(String s) {char[] buf = new char[s.length() + 3];int p = 0;for (int ip = 0; ip < s.length(); ip++) {char c = s.charAt(ip);if (c != ' ' && c != '\r' && c != '\n' && c != '\t')buf[p++] = c;}while ((p % 4) != 0)buf[p++] = '0';return decode(buf, 0, p);}/*** Decodes a byte array from Base64 format. No blanks or line breaks are* allowed within the Base64 encoded input data.* * @param s*            A Base64 String to be decoded.* @return An array containing the decoded data bytes.* @throws IllegalArgumentException*             If the input is not valid Base64 encoded data.*/public static byte[] decode(String s) {return decode(s.toCharArray());}/*** Decodes a byte array from Base64 format. No blanks or line breaks are* allowed within the Base64 encoded input data.* * @param in*            A character array containing the Base64 encoded data.* @return An array containing the decoded data bytes.* @throws IllegalArgumentException*             If the input is not valid Base64 encoded data.*/public static byte[] decode(char[] in) {return decode(in, 0, in.length);}/*** Decodes a byte array from Base64 format. No blanks or line breaks are* allowed within the Base64 encoded input data.* * @param in*            A character array containing the Base64 encoded data.* @param iOff*            Offset of the first character in <code>in</code> to be*            processed.* @param iLen*            Number of characters to process in <code>in</code>, starting*            at <code>iOff</code>.* @return An array containing the decoded data bytes.* @throws IllegalArgumentException*             If the input is not valid Base64 encoded data.*/public static byte[] decode(char[] in, int iOff, int iLen) {if (iLen % 4 != 0)throw new IllegalArgumentException("Length of Base64 encoded input string is not a multiple of 4.");while (iLen > 0 && in[iOff + iLen - 1] == '=')iLen--;int oLen = (iLen * 3) / 4;byte[] out = new byte[oLen];int ip = iOff;int iEnd = iOff + iLen;int op = 0;while (ip < iEnd) {int i0 = in[ip++];int i1 = in[ip++];int i2 = ip < iEnd ? in[ip++] : 'A';int i3 = ip < iEnd ? in[ip++] : 'A';if (i0 > 127 || i1 > 127 || i2 > 127 || i3 > 127)throw new IllegalArgumentException("Illegal character in Base64 encoded data.");int b0 = map2[i0];int b1 = map2[i1];int b2 = map2[i2];int b3 = map2[i3];if (b0 < 0 || b1 < 0 || b2 < 0 || b3 < 0)throw new IllegalArgumentException("Illegal character in Base64 encoded data.");int o0 = (b0 << 2) | (b1 >>> 4);int o1 = ((b1 & 0xf) << 4) | (b2 >>> 2);int o2 = ((b2 & 3) << 6) | b3;out[op++] = (byte) o0;if (op < oLen)out[op++] = (byte) o1;if (op < oLen)out[op++] = (byte) o2;}return out;}// Dummy constructor.private Base64Coder() {}} // end class Base64Coder