Android使用AsyncTask加http用post方式上传图片到服务器

来源：互联网发布：素描照片的软件编辑：程序博客网时间：2024/05/23 15:42

android端代码展示：

 /* 上传文件至Server的方法 */    private void uploadFile() {        System.out.print("正在发送请求！");        String end = "\r\n";        String twoHyphens = "--";        String boundary = "*****";        try {            String urlpost=actionUrl;            URL url = new URL(urlpost);            HttpURLConnection con = (HttpURLConnection) url.openConnection();/* 允许Input、Output，不使用Cache */            con.setDoInput(true);            con.setDoOutput(true);            con.setUseCaches(false);/* 设置传送的method=POST */            con.setRequestMethod("POST");/* setRequestProperty */            con.setRequestProperty("Connection", "Keep-Alive");            con.setRequestProperty("Charset", "UTF-8");            con.setRequestProperty("Content-Type",                    "multipart/form-data;boundary=" + boundary);/* 设置DataOutputStream */            DataOutputStream ds = new DataOutputStream(con.getOutputStream());            ds.writeBytes(twoHyphens + boundary + end);            ds.writeBytes("Content-Disposition: form-data; "                    + "name=\"file1\";filename=\"" + newName + "\"" + end);            ds.writeBytes(end);/* 取得文件的FileInputStream */            FileInputStream fStream = new FileInputStream(uploadFile);/* 设置每次写入1024bytes */            System.out.print("已经找到数据正在发送！");            int bufferSize = 1024*10;            byte[] buffer = new byte[bufferSize];            int length = -1;/* 从文件读取数据至缓冲区 */            while ((length = fStream.read(buffer)) != -1) {/* 将资料写入DataOutputStream中 */                ds.write(buffer, 0, length);            }            ds.writeBytes(end);            ds.writeBytes(twoHyphens + boundary + twoHyphens + end);/* close streams */            fStream.close();            ds.flush();/* 取得Response内容 */            InputStream is = con.getInputStream();            int ch;            StringBuffer b = new StringBuffer();            while ((ch = is.read()) != -1) {                b.append((char) ch);            }/* 将Response显示于Dialog *//* 关闭DataOutputStream */            ds.close();            try {                InfoUrl=InfoUrl+"?username="+username.getText()+"&password="+password.getText()+"&img="+b.toString();                Log.i("login", "uploadFile: "+InfoUrl);                HttpURLConnection huc= (HttpURLConnection) new URL(InfoUrl).openConnection();                huc.setDoInput(true);                huc.setDoOutput(true);                huc.setUseCaches(false);/* 设置传送的method=POST */                huc.setRequestMethod("GET");                huc.connect();                InputStream is1 = huc.getInputStream();                int ch1;                StringBuffer b1 = new StringBuffer();                while ((ch1 = is1.read()) != -1) {                    b1.append((char) ch1);                }                int result=Integer.parseInt(b1.toString());                if(result>0) {                    showDialog("注册成功,请登录！");                    Intent intent = new Intent(this, MainActivity.class);                    startActivity(intent);                }else {                    showDialog("注册失败,请检查！");                }            } catch (Exception e) {                e.printStackTrace();            }        } catch (Exception e) {            System.out.print("网络出现异常！");            showDialog("上传失败");            e.printStackTrace();        }    }

服务器端：

PrintWriter out = response.getWriter();FileUploadTool fut=new FileUploadTool(request,"photo");String name=fut.getParameter("file1");out.print(name);

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