这是整个错误消息：
error parsing data org.json.jsonexception end of input at character 0 of
这是我的全部代码：
// JSON Node names
public static final String TAG_SUCCESS = "success";
public static final String TAG_ID = "salesorderingcard_id";
public static String TAG_CODE = "salesordercard_code";
public static final String TAG_LOCATION_TO = "location_to";
public static final String TAG_LOCATION_FROM = "location_from";
public final static String TAG_CUSTOMER = "customername";
public final static String TAG_SALESMAN = "salesmanname";
protected String doInBackground(String... args) {
// getting updated data from EditTexts
String salesordercard_code = etCode.getText().toString();
String location_from = etFrom.getText().toString();
String location_to = etTo.getText().toString();
String customername = etCustomer.getText().toString();
String salesmanname = etSalesman.getText().toString();
Bundle extras = getIntent().getExtras();
String salesorderingcard_id = extras.getString("salesorderingcard_id");;
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair(TAG_ID, salesorderingcard_id));
params.add(new BasicNameValuePair(TAG_CODE, salesordercard_code));
params.add(new BasicNameValuePair(TAG_LOCATION_FROM, location_from));
params.add(new BasicNameValuePair(TAG_LOCATION_TO, location_to));
params.add(new BasicNameValuePair(TAG_CUSTOMER, customername));
params.add(new BasicNameValuePair(TAG_SALESMAN, salesmanname));
Log.d("Salesman", salesmanname);
// sending modified data through http request
// Notice that update salesorder url accepts POST method
JSONObject json = jsonParser.makeHttpRequest(url_update_salesorder,
"POST", params);
// check json success tag
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// successfully updated
//Intent i = getIntent();
// send result code 100 to notify about Sales Order update
//setResult(100, i);
//finish();
Log.d("Update Successful", "Update Successful");
} else {
// failed to update Sales Order
Log.d("Update failed", "Update failed");
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
JSONPARSER
// function get json from url
// by making HTTP POST or GET mehtod
public JSONObject makeHttpRequest(String url, String method, List<NameValuePair> params)
{
// Making HTTP request
try {
// check for request method
if(method.equals("POST")){
// request method is POST
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
httpPost.setEntity(new UrlEncodedFormEntity(params));
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
Log.d("response", is.toString());
}else if(method.equals("GET")){
// request method is GET
DefaultHttpClient httpClient = new DefaultHttpClient();
String paramString = URLEncodedUtils.format(params, "utf-8");
url += "?" + paramString;
HttpGet httpGet = new HttpGet(url);
HttpResponse httpResponse = httpClient.execute(httpGet);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
Log.d("response", is.toString());
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "'n");
}
is.close();
json = sb.toString();
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
// try parse the string to a JSON object
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
// return JSON String
return jObj;
}
update_record.php
// array for JSON response
$response = array();
// check for required fields
if (isset($_POST['salesorderingcard_id']) && isset($_POST['salesordercard_code']) && isset($_POST['location_from']) && isset($_POST['location_to'])
&& isset($_POST['customername']) && isset($_POST['salesmanname']) ) {
$salesorderingcard_id = $_POST['salesorderingcard_id'];
$salesordercard_code = $_POST['salesordercard_code'];
$location_from = $_POST['location_from'];
$location_to = $_POST['location_to'];
$customername = $_POST['customername'];
$salesmanname = $_POST['salesmanname'];
// include db connect class
include('connectdb.php');
// connecting to db
$db = new DB_CONNECT();
// mysql update row with matched pid
$result = mysql_query("UPDATE salesorderingcard SET salesordercard_code = '$salesordercard_code',
location_from = '$location_from', location_to = '$location_to', customername = '$customername', salesmanname = '$salesmanname'
WHERE salesorderingcard_id = $salesorderingcard_id");
// check if row inserted or not
if ($result) {
// successfully updated
$response["success"] = 1;
$response["message"] = "Sales Order successfully updated.";
// echoing JSON response
echo json_encode($response);
} else {
}
} else {
// required field is missing
$response["success"] = 0;
$response["message"] = "Required field(s) is missing";
// echoing JSON response
echo json_encode($response);
}
我试图使用我的android测试应用程序在线更新我的记录，但我无法做到。我不知道出了什么问题，我真的需要你的帮助。非常感谢您的帮助。
更新：
我在线上得到了一个NULLPOINTERCEPTION
int success = json.getInt(TAG_SUCCESS);
响应为：org.apache.http.conn.EOFSENSORINPUTSTREAM@417dbcf8
尝试这个
class AsyncHttpRequest extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... urls) {
try {
if (!isGetMethod) {
HttpPost httppost = new HttpPost(urls[0]);
httpclient = new DefaultHttpClient();
HttpConnectionParams.setConnectionTimeout(
httpclient.getParams(), 30000);
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
for (String key : map.keySet()) {
System.out.println(key + " < === > " + map.get(key));
nameValuePairs.add(new BasicNameValuePair(key, map
.get(key)));
}
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
ActivityManager manager = (ActivityManager) activity
.getSystemService(Context.ACTIVITY_SERVICE);
if (manager.getMemoryClass() < 25) {
System.gc();
}
HttpResponse response = httpclient.execute(httppost);
String responseBody = EntityUtils.toString(response
.getEntity());
return responseBody;
} else {
httpclient = new DefaultHttpClient();
HttpConnectionParams.setConnectionTimeout(
httpclient.getParams(), 30000);
HttpGet httpGet = new HttpGet(urls[0]);
HttpResponse httpResponse = httpclient.execute(httpGet);
HttpEntity httpEntity = httpResponse.getEntity();
String responseBody = EntityUtils.toString(httpEntity);
return responseBody;
}
} catch (Exception e) {
e.printStackTrace();
} catch (OutOfMemoryError oume) {
System.gc();
} finally {
if (httpclient != null)
httpclient.getConnectionManager().shutdown();
}
return null;
}
@Override
protected void onPostExecute(String response) {
//here is your response
}
}
通过在InputStream上调用toString（），可以获得对象的哈希代码。试试这个：
Log.d("response", EntityUtils.toString(httpEntity));