Android上的HTTP POST到PHP引发空指针错误
我想用一些参数（名称、电子邮件、密码等）对php脚本进行一个简单的HTTPRequest，以进行用户注册。我试过很多网上的教程，但都不适合我。HTTP POST抛出Android上的HTTP POST到PHP引发空指针错误,php,android,json,android-json,Php,Android,Json,Android Json,我想用一些参数（名称、电子邮件、密码等）对php脚本进行一个简单的HTTPRequest，以进行用户注册。我试过很多网上的教程，但都不适合我。HTTP POST抛出NullpointerException。在后端，它也显示null 我的代码是： //JSON Node Names private static final String TAG_ID = "status"; private static final String TAG_NAME
NullpointerException //JSON Node Names
private static final String TAG_ID = "status";
private static final String TAG_NAME = "code";
private static final String TAG_EMAIL = "message";
//POST data
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url);
// Add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(5);
nameValuePairs.add(new BasicNameValuePair("user_name", "Steve"));
nameValuePairs.add(new BasicNameValuePair("user_email", "jjdnjdn"));
nameValuePairs.add(new BasicNameValuePair("user_password", "dcds"));
nameValuePairs.add(new BasicNameValuePair("user_phone_number", "2343"));
nameValuePairs.add(new BasicNameValuePair("club_member_id", "24"));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
//For receiving response
// Creating new JSON Parser
JSONParser jParser = new JSONParser();
// Getting JSON from URL
JSONObject json = jParser.getJSONFromUrl(url);
Log.e("Data", String.valueOf(json));
try {
String id = json.getString(TAG_ID);
String name = json.getString(TAG_NAME);
String email = json.getString(TAG_EMAIL);
Toast.makeText(getContext(), id , Toast.LENGTH_SHORT).show();
Toast.makeText(getContext(), name , Toast.LENGTH_SHORT).show();
Toast.makeText(getContext(), email , Toast.LENGTH_SHORT).show();
} catch (JSONException e) {
e.printStackTrace();
}
}
<?php
print_r($_POST);
?>
private static final String TAG_ID = "status";
private static final String TAG_NAME = "code";
private static final String TAG_EMAIL = "message";
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("user_name", "Steve"));
nameValuePairs.add(new BasicNameValuePair("user_email", "jjdnjdn"));
nameValuePairs.add(new BasicNameValuePair("user_password", "dcds"));
nameValuePairs.add(new BasicNameValuePair("user_phone_number", "2343"));
nameValuePairs.add(new BasicNameValuePair("club_member_id", "24"));
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(URL);
try {
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
if(response.getStatusLine().getStatusCode()==200){
JSONObject jsonResponse = new JSONObject(response);
String id = jsonResponse .getString(TAG_ID);
String name = jsonResponse .getString(TAG_NAME);
String email = jsonResponse .getString(TAG_EMAIL);
}
} catch (JSONException e) {
} catch (UnsupportedEncodingException e) {
} catch (IOException e) {
}
<?php
file_put_contents(__DIR__."/request_log.txt", "Request : ".json_encode($_REQUEST));
if(!empty($_REQUEST))
{
$user_name = $_REQUEST["user_name"];
$user_email = $_REQUEST["user_email"];
$user_password = $_REQUEST["user_password"];
$user_phone_number = $_REQUEST["user_phone_number"];
$club_member_id = $_REQUEST["club_member_id"];
/*
Add your code
*/
$result = array("status" => "status_value", "code" => "code_value", "message" => "message");
file_put_contents(__DIR__."/request_log.txt", "Result : ".json_encode($result), FILE_APPEND);
echo json_encode($result);
}
?>
private static final String TAG_ID=“status”；
私有静态最终字符串标记\u NAME=“code”；
私有静态最终字符串标记\u EMAIL=“message”；
ArrayList nameValuePairs=新的ArrayList（）；
添加（新的BasicNameValuePair（“用户名”、“史蒂夫”）；
添加（新的BasicNameValuePair（“用户电子邮件”，“jjdnjdn”）；
添加（新的BasicNameValuePair（“用户密码”、“dcds”）；
添加（新的BasicNameValuePair（“用户电话号码”，“2343”）；
名称价值对。添加（新的基本名称价值对（“俱乐部成员id”，“24”））；
HttpClient HttpClient=新的DefaultHttpClient（）；
HttpPost HttpPost=新的HttpPost（URL）；
试一试{
setEntity（新的UrlEncodedFormEntity（nameValuePairs））；
HttpResponse response=httpclient.execute（httppost）；
if（response.getStatusLine（）.getStatusCode（）==200）{
JSONObject jsonResponse=新的JSONObject（响应）；
String id=jsonResponse.getString（TAG_id）；
String name=jsonResponse.getString（标记名）；
String email=jsonResponse.getString（TAG_email）；
}
}捕获（JSONException e）{
}捕获（不支持的编码异常e）{
}捕获（IOE异常）{
}
private static final String TAG_ID = "status";
private static final String TAG_NAME = "code";
private static final String TAG_EMAIL = "message";
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("user_name", "Steve"));
nameValuePairs.add(new BasicNameValuePair("user_email", "jjdnjdn"));
nameValuePairs.add(new BasicNameValuePair("user_password", "dcds"));
nameValuePairs.add(new BasicNameValuePair("user_phone_number", "2343"));
nameValuePairs.add(new BasicNameValuePair("club_member_id", "24"));
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(URL);
try {
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
if(response.getStatusLine().getStatusCode()==200){
JSONObject jsonResponse = new JSONObject(response);
String id = jsonResponse .getString(TAG_ID);
String name = jsonResponse .getString(TAG_NAME);
String email = jsonResponse .getString(TAG_EMAIL);
}
} catch (JSONException e) {
} catch (UnsupportedEncodingException e) {
} catch (IOException e) {
}
<?php
file_put_contents(__DIR__."/request_log.txt", "Request : ".json_encode($_REQUEST));
if(!empty($_REQUEST))
{
$user_name = $_REQUEST["user_name"];
$user_email = $_REQUEST["user_email"];
$user_password = $_REQUEST["user_password"];
$user_phone_number = $_REQUEST["user_phone_number"];
$club_member_id = $_REQUEST["club_member_id"];
/*
Add your code
*/
$result = array("status" => "status_value", "code" => "code_value", "message" => "message");
file_put_contents(__DIR__."/request_log.txt", "Result : ".json_encode($result), FILE_APPEND);
echo json_encode($result);
}
?>
echo jsone\u encode（$\u POST）无法在register$data=json_decode（$\u POST[“data”]，true）