我正在创建一个注册表单并通过android中的json将数据发送到MySql数据库，但每当我点击提交按钮时，我的logcat中出现以下错误。
12-19 18:19:22.145: E/JSON Parser(2620): Error parsing data org.json.JSONException: Value <!DOCTYPE of type java.lang.String cannot be converted to JSONObject
12-19 18:19:22.365: W/dalvikvm(2620): threadid=11: thread exiting with uncaught exception (group=0x40a13300)
12-19 18:19:22.865: E/AndroidRuntime(2620): FATAL EXCEPTION: AsyncTask #1
12-19 18:19:22.865: E/AndroidRuntime(2620): java.lang.RuntimeException: An error occured while executing doInBackground()
12-19 18:19:22.865: E/AndroidRuntime(2620): at android.os.AsyncTask$3.done(AsyncTask.java:299)
12-19 18:19:22.865: E/AndroidRuntime(2620): at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
12-19 18:19:22.865: E/AndroidRuntime(2620): at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
12-19 18:19:22.865: E/AndroidRuntime(2620): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
12-19 18:19:22.865: E/AndroidRuntime(2620): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
12-19 18:19:22.865: E/AndroidRuntime(2620): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
12-19 18:19:22.865: E/AndroidRuntime(2620): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
12-19 18:19:22.865: E/AndroidRuntime(2620): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
12-19 18:19:22.865: E/AndroidRuntime(2620): at java.lang.Thread.run(Thread.java:856)
12-19 18:19:22.865: E/AndroidRuntime(2620): Caused by: java.lang.NullPointerException
12-19 18:19:22.865: E/AndroidRuntime(2620): at app.restaurant.Register_Activity$RegisterUser.doInBackground(Register_Activity.java:162)
12-19 18:19:22.865: E/AndroidRuntime(2620): at app.restaurant.Register_Activity$RegisterUser.doInBackground(Register_Activity.java:1)
12-19 18:19:22.865: E/AndroidRuntime(2620): at android.os.AsyncTask$2.call(AsyncTask.java:287)
12-19 18:19:22.865: E/AndroidRuntime(2620): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
12-19 18:19:22.865: E/AndroidRuntime(2620): ... 5 more
这是我注册表单的安卓代码
Register_Activity.java
public class Register_Activity extends Activity {
//RadioGroup rg;
private ProgressDialog pDialog;
// RadioButton rb;
// int id;
TextView nm,ad,ps,ph,em;
String password;
Button bnt_Submit;
EditText edt_email,edt_password,edt_name,edt_phone,edt_address,edt_lastName;
JSONObject json;
JSONParser jsonParser = new JSONParser();
private static String url_create_product = "http://192.168.1.9/adminfoodOld/public/jsonregister";
//http://www.truzzinfotech.co.nz/admin/public/jsonregister
private static final String TAG_SUCCESS = "success";
//JSONArray phn,eml,pas,add,nam;
String gender ="Male";
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.register);
/*
nm = (TextView)findViewById(R.id.TXt_Name);
em = (TextView)findViewById(R.id.TXt_Email);
ph = (TextView)findViewById(R.id.TXt_Ph);
ps = (TextView)findViewById(R.id.TXt_password);
ad = (TextView)findViewById(R.id.TXt_Ad);
*/
// rg = (RadioGroup)findViewById(R.id.radioGroup1);
bnt_Submit =(Button)findViewById(R.id.btnsubmit);
edt_email = (EditText)findViewById(R.id.Edt_Email);
edt_password = (EditText)findViewById(R.id.Edt_Password);
edt_name = (EditText)findViewById(R.id.Edt_Name);
edt_phone = (EditText)findViewById(R.id.Edt_Phone);
edt_address = (EditText)findViewById(R.id.Edt_Address);
edt_lastName = (EditText)findViewById(R.id.Edt_LastName);
/* id = rg.getCheckedRadioButtonId();
rb = (RadioButton)findViewById(id);*/
bnt_Submit.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
password = edt_password.getText().toString();
if (!isValidPassword(password)) {
edt_password.setError("The Passward must be at least 8 character ");
}
// Toast.makeText(getApplicationContext(), gender+"Selected", Toast.LENGTH_LONG).show();
new RegisterUser().execute();
}
});
}
private boolean isValidPassword(String pass) {
if (pass != null && pass.length() > 7) {
return true;
}
return false;
}
class RegisterUser extends AsyncTask<String, String, String> {
@Override
protected void onPreExecute() {
// TODO Auto-generated method stub
super.onPreExecute();
pDialog = new ProgressDialog(Register_Activity.this);
pDialog.setMessage("Registering...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
@Override
protected String doInBackground(String... params) {
// TODO Auto-generated method stub
// gender= rb.getText().toString();
String firstname =edt_name.getText().toString();
String emails =edt_email.getText().toString();
String phone =edt_phone.getText().toString();
String address =edt_address.getText().toString();
String lastname =edt_lastName.getText().toString();
List<NameValuePair> params1 = new ArrayList<NameValuePair>();
params1.add(new BasicNameValuePair("firstname", firstname));
params1.add(new BasicNameValuePair("password", password));
params1.add(new BasicNameValuePair("email", emails));
params1.add(new BasicNameValuePair("phone", phone));
params1.add(new BasicNameValuePair("address",address));
params1.add(new BasicNameValuePair("gender", gender));
params1.add(new BasicNameValuePair("lastname", lastname));
Log.d("param",params1.toString());
json = jsonParser.makeHttpRequest(url_create_product,"POST", params1);
Log.d("Create Response", json.toString());
/* Log.d("Gender", gender.toString());
Log.d("name", firstname.toString());
Log.d("pass", password.toString());
Log.d("email", emails.toString());
Log.d("lastname", lastname.toString());
Log.d("address", address.toString());*/
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// successfully created product
/* Intent i = new Intent(getApplicationContext(), AllProductsActivity.class);
startActivity(i);*/
// Toast.makeText(getApplicationContext(),"ravi kujaa", Toast.LENGTH_LONG).show();
// closing this screen
//finish();
} else {
// failed to create product
}
}catch (Exception e) {
// TODO: handle exception
}
return null;
}
protected void onPostExecute(String file_url) {
// dismiss the dialog once done
pDialog.dismiss();
/* try {
JSONObject json1 = json.getJSONObject("detail");
// phn,eml,pas,add,nam;
phn = json1.optJSONArray("phone");
eml = json1.optJSONArray("email");
pas = json1.optJSONArray("password");
add = json1.optJSONArray("address");
nam = json1.optJSONArray("name");
// Log.d("Else_Part", json.toString());
Log.d("Name", nam.getString(0));
Log.d("Phone", phn.getString(0));
Log.d("Email", eml.getString(0));
Log.d("Password", pas.getString(0));
Log.d("Address", add.getString(0));
//edt_email,edt_password,edt_name,edt_phone,edt_address;
if(nam != null) {
nm.setText(nam.getString(0));
}
if(eml!= null ){
em.setText(eml.getString(0));
}
if(phn!= null ){
ph.setText(phn.getString(0));
}
if(pas!= null ){
ps.setText(pas.getString(0));
}
if(add!= null ){
ad.setText(add.getString(0));
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
*/
}
}
}
这是我用json编码的php代码结果
{"detail":{"email":["The email field is required."],"password":["The password field is required."],"firstname":["The firstname field is required."],"lastname":["The lastname field is required."],"phone":["The phone field is required."],"address":["The address field is required."]},"success":0}
这是我的Php文件
<?php
class FrontUserController extends \BaseController {
/**
* Display a listing of the resource.
*
* @return Response
*/
public function index()
{
if(controllerAssignView('frontuser'))
{
$frontuser = frontuser::all();
return View::make('admin.registered')->with('data', $frontuser);
}
else
{
return Redirect::to('index');
}
}
public function jsonregister()
{
$inputs = Input::all();
$validator = Validator::make(
array(
'email' => $inputs['email'],
'password' => $inputs['password'],
'firstname' => $inputs['firstname'],
'lastname' => $inputs['lastname'],
'phone' => $inputs['phone'],
'address' => $inputs['address']
),
array(
'email' => 'required|email|unique:frontuser',
'password' => 'required|min:8',
'firstname' => 'required',
'lastname' => 'required',
'phone' => 'required|numeric',
'address' => 'required'
)
);
if ($validator->fails())
{
$messages = $validator->messages();
$userDetail = array();
$userDetail['detail'] = $messages;
$userDetail['success'] = 0;
return $userDetail;
}
else
{
$Frontuser = new frontuser;
$Frontuser->email = $inputs['email'];
$Frontuser->password = Hash::make($inputs['password']);
$Frontuser->firstname = $inputs['firstname'];
$Frontuser->lastname = $inputs['lastname'];
$Frontuser->phone = $inputs['phone'];
$Frontuser->address = $inputs['address'];
$Frontuser->status = $inputs['active'];
$Frontuser->gender = $inputs['gender'];
if($inputs['type'] != 'null'){$Frontuser->$inputs['type'] =1;}
$Frontuser->save();
$user = frontuser::where('email', '=', $inputs['email'])->take(1)->get();
$userDetail = array();
$userDetail['detail']['firstname'] = $user[0]->firstname;
$userDetail['detail']['lastname'] = $user[0]->lastname;
$userDetail['detail']['gender'] = $user[0]->gender;
$userDetail['detail']['phone'] = $user[0]->phone;
$userDetail['detail']['address'] = $user[0]->address;
if($user[0]->facebook == 1){$userDetail['detail']['login'] = 'registered with facebook.';}
if($user[0]->twitter == 1){$userDetail['detail']['login'] = 'registered with twitter.';}
if($user[0]->googleplus == 1){$userDetail['detail']['login'] = 'registered with googleplus.';}
$userDetail['success'] = 1;
return $userDetail;
}
}
＆GT;
答案 0 :(得分：1)
重要：
下面的答案涉及如何确保发送正确的标头，但这只有在您的代码本身不包含任何错误时才有效。但是，您的代码确实存在一些需要尽快解决的问题：
$userDetail = array();
$userDetail['detail']['firstname'] = $user[0]->firstname;
此语句 将 生成通知（未定义的偏移量），因为$userDetail初始化为空数组（1D），然后用作2D关联数组。如果php.ini设置为E_STRICT | E_ALL，这将（正确地）生成通知。解决它：
$userDetail = array('detail' => array());
如果您不确定代码产生此通知的原因I've explained this here
您正在调用的PHP脚本未生成纯JSON字符串。异常消息告诉您字符串的值以<!DOCTYPE开头。您需要在PHP中添加相应的标头，将其添加到脚本中（在最顶层，在此之前不能发送任何输出）：
<?php //before this opening tag, not even a space is allowed!
header('Content-Type: application/json');
$data = ['get' => 'data', 'here'];
echo json_encode($data);
当然，如果PHP脚本包含错误（通知，未捕获的异常等...），那么输出将因此而混乱。彻底调试脚本，也许通过打印（或写入）json.toString()到日志或tmp文件来检查Java中的响应是什么
更新
看起来你正在使用PHP框架（很可能是Laravel）。检查该框架的文档，看看它是否没有为您处理JSON响应的响应组件。如果您正在使用Laravel，则操作应该返回如下：
return Response::json($userDetail);