android上传图片到服务器(使用base64字节流的形式通过 AsyncHttpClient框架
AsyncHttpClient 是一个框架提供的库 可以异步传输,使用时需下载android-async-http-1.4.4.jar包导入到项目中
- public static void reg(final Context cont,Bitmap photodata,String regData) {
- try {
- ByteArrayOutputStream baos = new ByteArrayOutputStream();
- //将bitmap一字节流输出 Bitmap.CompressFormat.PNG 压缩格式,100:压缩率,baos:字节流
- photodata.compress(Bitmap.CompressFormat.PNG, 100, baos);
- baos.close();
- byte[] buffer = baos.toByteArray();
- System.out.println("图片的大小:"+buffer.length);
- //将图片的字节流数据加密成base64字符输出
- String photo = Base64.encodeToString(buffer, 0, buffer.length,Base64.DEFAULT);
- //photo=URLEncoder.encode(photo,"UTF-8");
- RequestParams params = new RequestParams();
- params.put("photo", photo);
- params.put("name", "woshishishi");//传输的字符数据
- String url = "http://10.0.2.2:8080/IC_Server/servlet/RegisterServlet1";
- AsyncHttpClient client = new AsyncHttpClient();
- client.post(url, params, new AsyncHttpResponseHandler() {
- @Override
- public void onSuccess(int statusCode, String content){
- Toast.makeText(cont, "头像上传成功!"+content, 0)
- .show();
- }
- @Override
- public void onFailure(Throwable e, String data){
- Toast.makeText(cont, "头像上传失败!", 0)
- .show();
- }
- });
- } catch (Exception e) {
- e.printStackTrace();
- }
- }
- package uestc.app.ic.server.servlet;
- import java.io.File;
- import java.io.FileOutputStream;
- import java.io.IOException;
- import javax.servlet.ServletException;
- import javax.servlet.http.HttpServlet;
- import javax.servlet.http.HttpServletRequest;
- import javax.servlet.http.HttpServletResponse;
- import sun.misc.BASE64Decoder;
- public class RegisterServlet1 extends HttpServlet {
- public void doGet(HttpServletRequest request, HttpServletResponse response)
- throws ServletException, IOException {
- request.setCharacterEncoding("utf-8");
- response.setCharacterEncoding("utf-8");
- response.setContentType("text/html");
- String photo = request.getParameter("photo");
- String name = request.getParameter("name");
- try {
- // 对base64数据进行解码 生成 字节数组,不能直接用Base64.decode();进行解密
- byte[] photoimg = new BASE64Decoder().decodeBuffer(photo);
- for (int i = 0; i < photoimg.length; ++i) {
- if (photoimg[i] < 0) {
- // 调整异常数据
- photoimg[i] += 256;
- }
- }
- // byte[] photoimg = Base64.decode(photo);//此处不能用Base64.decode()方法解密,我调试时用此方法每次解密出的数据都比原数据大 所以用上面的函数进行解密,在网上直接拷贝的,花了好几个小时才找到这个错误(菜鸟不容易啊)
- System.out.println("图片的大小:" + photoimg.length);
- File file = new File("e:", "decode.png");
- File filename = new File("e:\\name.txt");
- if (!filename.exists()) {
- file.createNewFile();
- }
- if (!file.exists()) {
- file.createNewFile();
- }
- FileOutputStream out = new FileOutputStream(file);
- FileOutputStream out1 = new FileOutputStream(filename);
- out1.write(name.getBytes());
- out.write(photoimg);
- out.flush();
- out.close();
- out1.flush();
- out1.close();
- } catch (Exception e) {
- // TODO Auto-generated catch block
- e.printStackTrace();
- }
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