我想使用以下NameValuePair方法从我的Android客户端向web服务器发送几个值：
public void postData() {
// Create a new HttpClient and Post Header
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http:/xxxxxxx");
try {
// Add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(1);
String amount = paymentAmount.getText().toString();
String email = inputEmail.getText().toString();
nameValuePairs.add(new BasicNameValuePair("donationAmount", amount));
nameValuePairs.add(new BasicNameValuePair("email", email));
nameValuePairs.add(new BasicNameValuePair("paymentMethod", "5"));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
// Execute HTTP Post Request
HttpResponse response = httpclient.execute(httppost);
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
} catch (IOException e) {
// TODO Auto-generated catch block
}
}
不幸的是NameValuePair只能发送String，我还需要发送byte[]值。有人能帮我解决问题吗？
HttpPost httppost = new HttpPost("http://upload-test.php");
MultipartEntity entity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
HttpClient httpClient = new DefaultHttpClient();
if(bm!=null){
ByteArrayOutputStream bos = new ByteArrayOutputStream();
bm.compress(CompressFormat.JPEG, 75, bos);
byte[] data = bos.toByteArray();
ByteArrayBody bab = new ByteArrayBody(data, name+".jpg");
entity.addPart("file", bab);
}
try {
StringBody sname = new StringBody(name);
entity.addPart("name", sname);
} catch (UnsupportedEncodingException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
httppost.setEntity(entity);
try {
httpClient.execute(httppost);
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
在这个例子中，我发布了一个图片（jpg）和字符串，你可以在这里下载多部分的帖子库：http://hc.apache.org/downloads.cgibm是位图。您也可以使用：
Bundle bundle=new Bundle();
bundle.putString("key", "value");
byte[] b = bundle.getByteArray("key");
ByteArrayBody bab = new ByteArrayBody(b,"info");
将字节编码为字符串：字符串ba1=Base64.encodeBytes（ba）；
Bitmap bitmapOrg = BitmapFactory.decodeFile(sdPath);
ByteArrayOutputStream bao = new ByteArrayOutputStream();
//Resize the image
double width = bitmapOrg.getWidth();
double height = bitmapOrg.getHeight();
double ratio = 400/width;
int newheight = (int)(ratio * height);
System.out.println("———-width" + width);
System.out.println("———-height" + height);
bitmapOrg = Bitmap.createScaledBitmap(bitmapOrg, 400, newheight, true);
//Here you can define .PNG as well
bitmapOrg.compress(Bitmap.CompressFormat.JPEG, 95, bao);
byte[] ba = bao.toByteArray();
String ba1 = Base64.encodeBytes(ba);
System.out.println("uploading image now ---" + ba1);
String a = "aaaaa";
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("image", ba1));
nameValuePairs.add(new BasicNameValuePair("a", a));
try{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://10.0.2.2:8080/upload_test/upload_image.php");
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
// print responce
outPut = EntityUtils.toString(entity);
Log.i("GET RESPONSE—-", outPut);
//is = entity.getContent();
Log.e("log_tag ******", "good connection");
bitmapOrg.recycle();
}catch (Exception e) {
Log.e("log_tag ******", "Error in http connection " + e.toString());
}