Android的上传图片使用服务器的base64 [英] Android upload image to server using base64

问题描述

我使用Base64其工作正常，如果图像是小，但如果图像是大它给了我记忆出异常图像上传到服务器

 尝试{
        ByteArrayOutputStream流=新ByteArrayOutputStream（）;
        bitmap.com preSS（Bitmap.Com pressFormat.PNG，100，流）;
        bitmap.recycle（）;
        字节[]的字节数组= stream.toByteArray（）;
        stream.close（）;
        流= NULL;
        字符串BA1 = Base64.en codeToString（字节数组，Base64.DEFAULT）;

        位= NULL;
        System.gc（）的; //立即释放位图

        的字节数组= NULL;
        System.gc（）的;
        HttpClient的HttpClient的=新DefaultHttpClient（）;
        HttpPost httppost =新HttpPost（Data.upload_photo）;

        JSONObject的jsonObj =新的JSONObject（）;
        jsonObj.put（user_ID的，LoginParser.id）;
        INT CNT = ba1.length（）/ 4;
        的System.out.println（CNT =＆gt;中+ CNT）;
        jsonObj.put（形象，BA1）;

        jsonObj.put（标题，edt_caption.getText（）的toString（））;
        //创建POST对象，并添加参数

        / *
         * StringEntity实体=新StringEntity（jsonObj.toString（）
         * HTTP.UTF_8）;的System.out.println（实体）;
         * entity.setContentType（应用/ JSON）;
         * httppost.setEntity（实体）;
         *
         * Htt的presponse响应= httpclient.execute（httppost）;
         * /

        StringEntity本身=新StringEntity（jsonObj.toString（））;
        // se.setContentEncoding（新BasicHeader（HTTP.CONTENT_TYPE，
        //应用/ JSON））;
        se.setContentType（应用/ JSON）;
        httppost.setEntity（SE）;
        HTT presponse响应= httpclient.execute（httppost）;

        字符串结果= EntityUtils.toString（response.getEntity（））;
        的System.out.println（=＆GT; =＆gt;中+导致）;
        的JSONObject的JSONObject =新的JSONObject的（结果）;
        如果（jsonObject.getString（状态）。等于（成功））
            返回成功;
        其他
            返回jsonObject.getString（信息）;
    }赶上（IOException异常E）{
        e.printStackTrace（）;
    }赶上（JSONException E）{
        // TODO自动生成的catch块
        e.printStackTrace（）;
    }
    返回null;
}
 

解决方案

试试这个code一次。

  ByteArrayOutputStream宝=新ByteArrayOutputStream（）;
bm.com preSS（Bitmap.Com pressFormat.JPEG，90，宝）;
byte []的BA = bao.toByteArray（）;
字符串BA1 = Base64.en codeBytes（BA）;
ArrayList的＆LT;的NameValuePair＆GT; namevaluepairs中=新
ArrayList的＆LT;的NameValuePair＆GT; （）;
nameValuePairs.add（新BasicNameValuePair（形象，BA1））;
尝试 {
    HttpClient的HttpClient的=新DefaultHttpClient（）;
    HttpPost httppost =新
    HttpPost（URL字符串）;
    httppost.setEntity（新UrlEn codedFormEntity（namevaluepairs中））;
    HTT presponse响应= httpclient.execute（httppost）;
    HttpEntity实体= response.getEntity（）;
    是= entity.getContent（）;
    //Toast.makeText(SignUpActivity.this，加入失败，Toast.LENGTH_SHORT）.show（）;
}赶上（例外五）{
    Log.e（log_tag，错误的HTTP连接+ e.toString（））;
}
 

  

我可以帮你，如果你有什么疑问。

I am uploading image to server using base64 its working fine if image is small but if image is big it gives me memory out exception

try {
        ByteArrayOutputStream stream = new ByteArrayOutputStream();
        bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
        bitmap.recycle();
        byte[] byteArray = stream.toByteArray();
        stream.close();
        stream = null;
        String ba1 = Base64.encodeToString(byteArray, Base64.DEFAULT);

        bitmap = null;
        System.gc(); // immediately free bitmap

        byteArray = null;
        System.gc();
        HttpClient httpclient = new DefaultHttpClient();
        HttpPost httppost = new HttpPost(Data.upload_photo);

        JSONObject jsonObj = new JSONObject();
        jsonObj.put("user_id", LoginParser.id);
        int cnt = ba1.length() / 4;
        System.out.println("cnt=>" + cnt);
        jsonObj.put("image", ba1);

        jsonObj.put("caption", edt_caption.getText().toString());
        // Create the POST object and add the parameters

        /*
         * StringEntity entity = new StringEntity(jsonObj.toString(),
         * HTTP.UTF_8); System.out.println(entity);
         * entity.setContentType("application/json");
         * httppost.setEntity(entity);
         * 
         * HttpResponse response = httpclient.execute(httppost);
         */

        StringEntity se = new StringEntity(jsonObj.toString());
        // se.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE,
        // "application/json"));
        se.setContentType("application/json");
        httppost.setEntity(se);
        HttpResponse response = httpclient.execute(httppost);

        String result = EntityUtils.toString(response.getEntity());
        System.out.println("=>=>" + result);
        JSONObject jsonObject = new JSONObject(result);
        if (jsonObject.getString("status").equals("success"))
            return "success";
        else
            return jsonObject.getString("message");
    } catch (IOException e) {
        e.printStackTrace();
    } catch (JSONException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    return null;
}

解决方案

Try this code once.

ByteArrayOutputStream bao = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.JPEG, 90, bao);
byte[] ba = bao.toByteArray();
String ba1 = Base64.encodeBytes(ba);
ArrayList < NameValuePair > nameValuePairs = new
ArrayList < NameValuePair > ();
nameValuePairs.add(new BasicNameValuePair("image", ba1));
try {
    HttpClient httpclient = new DefaultHttpClient();
    HttpPost httppost = new
    HttpPost("URL STRING");
    httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
    HttpResponse response = httpclient.execute(httppost);
    HttpEntity entity = response.getEntity();
    is = entity.getContent();
    //Toast.makeText(SignUpActivity.this, "Joining Failed", Toast.LENGTH_SHORT).show();
} catch (Exception e) {
    Log.e("log_tag", "Error in http connection " + e.toString());
}

I can help you if you have any doubt.

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