Php 从Android向MySQL数据库写入数据显示错误
嗨，我正在做一个大学项目，每次用户填写信息并点击注册按钮时，在数据库中创建一个新记录。im使用apache服务器、php和mysql数据库以及java。我将php文件保存在apache文件夹中，并使用localhost调用这些文件。 我还使用jason类来查看数据 我的问题是： 每次我填写信息并点击注册按钮时，应用程序都无法在数据库中创建记录，我到处都在搜索解决方案，但没有找到任何解决方案，我希望有人能帮助我。 提前谢谢 这是注册页面的代码：Php 从Android向MySQL数据库写入数据显示错误,php,android,mysql,performance,apache,Php,Android,Mysql,Performance,Apache,嗨，我正在做一个大学项目，每次用户填写信息并点击注册按钮时，在数据库中创建一个新记录。im使用apache服务器、php和mysql数据库以及java。我将php文件保存在apache文件夹中，并使用localhost调用这些文件。 我还使用jason类来查看数据 我的问题是： 每次我填写信息并点击注册按钮时，应用程序都无法在数据库中创建记录，我到处都在搜索解决方案，但没有找到任何解决方案，我希望有人能帮助我。 提前谢谢 这是注册页面的代码： package tigris.codes.Regis
package tigris.codes.Registration.system;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONException;
import org.json.JSONObject;
import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class Registration extends Activity {
//Declaring Variables
EditText StudentName,StudentEmail,StudentPassword,StudentMobNumber,StudentNumber;
Button RegisterButton;
JSONParser jsonParser = new JSONParser();
private ProgressDialog pDialog;
// url to create new product
private static String url_create_product = "http://localhost/android_connect/create_product.php";
// JSON Node names
private static final String TAG_SUCCESS = "success";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_registration);
//Linking Objects
StudentName = (EditText) findViewById(R.id.RegNameEditText);
StudentEmail = (EditText) findViewById(R.id.RegEmailEditText);
StudentPassword = (EditText) findViewById(R.id.RegPasswordEditText);
StudentMobNumber = (EditText) findViewById(R.id.RegPhoneEditText);
StudentNumber = (EditText) findViewById(R.id.RegStudentNumber);
RegisterButton = (Button) findViewById(R.id.registerUserButton);
//Setting Button Event
RegisterButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// creating new product in background thread
new CreateNewProduct().execute();
}
});
}//End of onCreate method
/**
* Background Async Task to Create new product
* */
class CreateNewProduct extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(Registration.this);
pDialog.setMessage("Creating Product..");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
/**
* Creating product
* */
protected String doInBackground(String... args) {
String name = StudentName.getText().toString();
String password = StudentPassword.getText().toString();
String email = StudentEmail.getText().toString();
String phone = StudentMobNumber.getText().toString();
String snumber = StudentNumber.getText().toString();
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("name", name));
params.add(new BasicNameValuePair("password", password));
params.add(new BasicNameValuePair("email", email));
params.add(new BasicNameValuePair("phone", phone));
params.add(new BasicNameValuePair("snumber", snumber));
// getting JSON Object
// Note that create product url accepts POST method
JSONObject json = jsonParser.makeHttpRequest(url_create_product,
"POST", params);
// check log cat fro response
Log.d("Create Response", json.toString());
// check for success tag
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// successfully created product
Intent i = new Intent(getApplicationContext(), MainActivity.class);
startActivity(i);
// closing this screen
finish();
} else {
// failed to create product
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog once done
pDialog.dismiss();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.registration, menu);
return true;
}//end of boolean onCreateOptionMenu
}//end of main class
10-24 13:44:49.141: E/Buffer Error(1520): Error converting result java.lang.NullPointerException: lock == null
10-24 13:44:49.161: E/JSON Parser(1520): Error parsing data org.json.JSONException: End of input at character 0 of
10-24 13:44:49.361: E/AndroidRuntime(1520): FATAL EXCEPTION: AsyncTask #1
10-24 13:44:49.361: E/AndroidRuntime(1520): java.lang.RuntimeException: An error occured while executing doInBackground()
10-24 13:44:49.361: E/AndroidRuntime(1520): at android.os.AsyncTask$3.done(AsyncTask.java:299)
10-24 13:44:49.361: E/AndroidRuntime(1520): at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:352)
10-24 13:44:49.361: E/AndroidRuntime(1520): at java.util.concurrent.FutureTask.setException(FutureTask.java:219)
10-24 13:44:49.361: E/AndroidRuntime(1520): at java.util.concurrent.FutureTask.run(FutureTask.java:239)
10-24 13:44:49.361: E/AndroidRuntime(1520): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
10-24 13:44:49.361: E/AndroidRuntime(1520): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
10-24 13:44:49.361: E/AndroidRuntime(1520): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
10-24 13:44:49.361: E/AndroidRuntime(1520): at java.lang.Thread.run(Thread.java:856)
10-24 13:44:49.361: E/AndroidRuntime(1520): Caused by: java.lang.NullPointerException
10-24 13:44:49.361: E/AndroidRuntime(1520): at tigris.codes.attendance.system.Registration$CreateNewProduct.doInBackground(Registration.java:107)
10-24 13:44:49.361: E/AndroidRuntime(1520): at tigris.codes.attendance.system.Registration$CreateNewProduct.doInBackground(Registration.java:1)
10-24 13:44:49.361: E/AndroidRuntime(1520): at android.os.AsyncTask$2.call(AsyncTask.java:287)
10-24 13:44:49.361: E/AndroidRuntime(1520): at java.util.concurrent.FutureTask.run(FutureTask.java:234)
10-24 13:44:49.361: E/AndroidRuntime(1520): ... 4 more
10-24 13:44:52.711: E/WindowManager(1520): Activity tigris.codes.attendance.system.Registration has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{40cff448 V.E..... R.....ID 0,0-329,175} that was originally added here
10-24 13:44:52.711: E/WindowManager(1520): android.view.WindowLeaked: Activity tigris.codes.attendance.system.Registration has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{40cff448 V.E..... R.....ID 0,0-329,175} that was originally added here
10-24 13:44:52.711: E/WindowManager(1520): at android.view.ViewRootImpl.<init>(ViewRootImpl.java:354)
10-24 13:44:52.711: E/WindowManager(1520): at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:216)
10-24 13:44:52.711: E/WindowManager(1520): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:69)
10-24 13:44:52.711: E/WindowManager(1520): at android.app.Dialog.show(Dialog.java:281)
10-24 13:44:52.711: E/WindowManager(1520): at tigris.codes.attendance.system.Registration$CreateNewProduct.onPreExecute(Registration.java:80)
10-24 13:44:52.711: E/WindowManager(1520): at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:586)
10-24 13:44:52.711: E/WindowManager(1520): at android.os.AsyncTask.execute(AsyncTask.java:534)
10-24 13:44:52.711: E/WindowManager(1520): at tigris.codes.attendance.system.Registration$1.onClick(Registration.java:57)
10-24 13:44:52.711: E/WindowManager(1520): at android.view.View.performClick(View.java:4204)
10-24 13:44:52.711: E/WindowManager(1520): at android.view.View$PerformClick.run(View.java:17355)
10-24 13:44:52.711: E/WindowManager(1520): at android.os.Handler.handleCallback(Handler.java:725)
10-24 13:44:52.711: E/WindowManager(1520): at android.os.Handler.dispatchMessage(Handler.java:92)
10-24 13:44:52.711: E/WindowManager(1520): at android.os.Looper.loop(Looper.java:137)
10-24 13:44:52.711: E/WindowManager(1520): at android.app.ActivityThread.main(ActivityThread.java:5041)
10-24 13:44:52.711: E/WindowManager(1520): at java.lang.reflect.Method.invokeNative(Native Method)
10-24 13:44:52.711: E/WindowManager(1520): at java.lang.reflect.Method.invoke(Method.java:511)
10-24 13:44:52.711: E/WindowManager(1520): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
10-24 13:44:52.711: E/WindowManager(1520): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
10-24 13:44:52.711: E/WindowManager(1520): at dalvik.system.NativeStart.main(Native Method)
package tigris.code.Registration.system；
导入java.util.ArrayList；
导入java.util.List；
导入org.apache.http.NameValuePair；
导入org.apache.http.message.BasicNameValuePair；
导入org.json.JSONException；
导入org.json.JSONObject；
导入android.os.AsyncTask；
导入android.os.Bundle；
导入android.app.Activity；
导入android.app.ProgressDialog；
导入android.content.Intent；
导入android.util.Log；
导入android.view.Menu；
导入android.view.view；
导入android.widget.Button；
导入android.widget.EditText；
公营班级注册扩展活动{
//声明变量
EditText StudentName、StudentEmail、StudentPassword、StudentMobNumber、StudentNumber；
按钮寄存器按钮；
JSONParser JSONParser=新的JSONParser（）；
私人对话；
//创建新产品的url
私有静态字符串url\u创建\u产品=”http://localhost/android_connect/create_product.php";
//JSON节点名称
私有静态最终字符串标记_SUCCESS=“SUCCESS”；
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.activity\u注册）；
//链接对象
StudentName=（EditText）findViewById（R.id.RegNameEditText）；
StudentEmail=（EditText）findViewById（R.id.RegEmailEditText）；
StudentPassword=（EditText）findViewById（R.id.RegPasswordEditText）；
StudentMobNumber=（EditText）findViewById（R.id.RegPhoneEditText）；
StudentNumber=（EditText）findViewById（R.id.RegStudentNumber）；
RegisterButton=（按钮）findViewById（R.id.registerUserButton）；
//设置按钮事件
RegisterButton.setOnClickListener（新视图.OnClickListener（）{
@凌驾
公共void onClick（视图v）{
//在后台线程中创建新产品
新建CreateNewProduct（）.execute（）；
}
});
}//onCreate方法的结束
/**
*创建新产品的后台异步任务
* */
类CreateNewProduct扩展了AsyncTask{
/**
*在启动后台线程显示进度对话框之前
* */
@凌驾
受保护的void onPreExecute（）{
super.onPreExecute（）；
pDialog=newprogressdialog（Registration.this）；
pDialog.setMessage（“创建产品…”）；
pDialog.setUndeterminate（假）；
pDialog.setCancelable（真）；
pDialog.show（）；
}
/**
*创造产品
* */
受保护的字符串doInBackground（字符串…args）{
String name=StudentName.getText（）.toString（）；
字符串密码=StudentPassword.getText（）.toString（）；
字符串email=StudentEmail.getText（）.toString（）；
字符串phone=StudentMobNumber.getText（）.toString（）；
String snumber=StudentNumber.getText（）.toString（）；
//建筑参数
List params=new ArrayList（）；
参数添加（新的BasicNameValuePair（“名称”），名称）；
添加（新的BasicNameValuePair（“密码”，password））；
参数添加（新的BasicNameValuePair（“电子邮件”），电子邮件）；
参数添加（新的BasicNameValuePair（“电话”，电话））；
添加参数（新的BasicNameValuePair（“snumber”，snumber））；
//获取JSON对象
//请注意，创建产品url接受POST方法
JSONObject json=jsonParser.makeHttpRequest（url\u create\u product，
“POST”，params）；
//检查cat fro响应日志
d（“创建响应”，json.toString（））；
//检查成功标签
试一试{
int success=json.getInt（TAG_success）；
如果（成功==1）{
//已成功创建产品
Intent i=新的Intent（getApplicationContext（），MainActivity.class）；
星触觉（i）；
//关闭此屏幕
完成（）；
}否则{
//未能创建产品
}
}捕获（JSONException e）{
e、 printStackTrace（）；
}
返回null；
}
/**
*完成后台任务后，关闭“进度”对话框
* **/
受保护的void onPostExecute（字符串文件\u url）{
//完成后关闭对话框
pDialog.disclose（）；
}
}
@凌驾
公共布尔onCreateOptions菜单（菜单）{
//为菜单充气；这会将项目添加到操作栏（如果存在）。
getMenuInflater（）.充气（R.menu.registration，menu）；
返回true；
}//布尔值onCreateOptionMenu结束
}//主课结束
package tigris.codes.Registration.system;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONException;
import org.json.JSONObject;
import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class Registration extends Activity {
//Declaring Variables
EditText StudentName,StudentEmail,StudentPassword,StudentMobNumber,StudentNumber;
Button RegisterButton;
JSONParser jsonParser = new JSONParser();
private ProgressDialog pDialog;
// url to create new product
private static String url_create_product = "http://localhost/android_connect/create_product.php";
// JSON Node names
private static final String TAG_SUCCESS = "success";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_registration);
//Linking Objects
StudentName = (EditText) findViewById(R.id.RegNameEditText);
StudentEmail = (EditText) findViewById(R.id.RegEmailEditText);
StudentPassword = (EditText) findViewById(R.id.RegPasswordEditText);
StudentMobNumber = (EditText) findViewById(R.id.RegPhoneEditText);
StudentNumber = (EditText) findViewById(R.id.RegStudentNumber);
RegisterButton = (Button) findViewById(R.id.registerUserButton);
//Setting Button Event
RegisterButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// creating new product in background thread
new CreateNewProduct().execute();
}
});
}//End of onCreate method
/**
* Background Async Task to Create new product
* */
class CreateNewProduct extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(Registration.this);
pDialog.setMessage("Creating Product..");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
/**
* Creating product
* */
protected String doInBackground(String... args) {
String name = StudentName.getText().toString();
String password = StudentPassword.getText().toString();
String email = StudentEmail.getText().toString();
String phone = StudentMobNumber.getText().toString();
String snumber = StudentNumber.getText().toString();
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("name", name));
params.add(new BasicNameValuePair("password", password));
params.add(new BasicNameValuePair("email", email));
params.add(new BasicNameValuePair("phone", phone));
params.add(new BasicNameValuePair("snumber", snumber));
// getting JSON Object
// Note that create product url accepts POST method
JSONObject json = jsonParser.makeHttpRequest(url_create_product,
"POST", params);
// check log cat fro response
Log.d("Create Response", json.toString());
// check for success tag
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// successfully created product
Intent i = new Intent(getApplicationContext(), MainActivity.class);
startActivity(i);
// closing this screen
finish();
} else {
// failed to create product
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog once done
pDialog.dismiss();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.registration, menu);
return true;
}//end of boolean onCreateOptionMenu
}//end of main class
10-24 13:44:49.141: E/Buffer Error(1520): Error converting result java.lang.NullPointerException: lock == null
10-24 13:44:49.161: E/JSON Parser(1520): Error parsing data org.json.JSONException: End of input at character 0 of
10-24 13:44:49.361: E/AndroidRuntime(1520): FATAL EXCEPTION: AsyncTask #1
10-24 13:44:49.361: E/AndroidRuntime(1520): java.lang.RuntimeException: An error occured while executing doInBackground()
10-24 13:44:49.361: E/AndroidRuntime(1520): at android.os.AsyncTask$3.done(AsyncTask.java:299)
10-24 13:44:49.361: E/AndroidRuntime(1520): at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:352)
10-24 13:44:49.361: E/AndroidRuntime(1520): at java.util.concurrent.FutureTask.setException(FutureTask.java:219)
10-24 13:44:49.361: E/AndroidRuntime(1520): at java.util.concurrent.FutureTask.run(FutureTask.java:239)
10-24 13:44:49.361: E/AndroidRuntime(1520): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
10-24 13:44:49.361: E/AndroidRuntime(1520): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
10-24 13:44:49.361: E/AndroidRuntime(1520): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
10-24 13:44:49.361: E/AndroidRuntime(1520): at java.lang.Thread.run(Thread.java:856)
10-24 13:44:49.361: E/AndroidRuntime(1520): Caused by: java.lang.NullPointerException
10-24 13:44:49.361: E/AndroidRuntime(1520): at tigris.codes.attendance.system.Registration$CreateNewProduct.doInBackground(Registration.java:107)
10-24 13:44:49.361: E/AndroidRuntime(1520): at tigris.codes.attendance.system.Registration$CreateNewProduct.doInBackground(Registration.java:1)
10-24 13:44:49.361: E/AndroidRuntime(1520): at android.os.AsyncTask$2.call(AsyncTask.java:287)
10-24 13:44:49.361: E/AndroidRuntime(1520): at java.util.concurrent.FutureTask.run(FutureTask.java:234)
10-24 13:44:49.361: E/AndroidRuntime(1520): ... 4 more
10-24 13:44:52.711: E/WindowManager(1520): Activity tigris.codes.attendance.system.Registration has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{40cff448 V.E..... R.....ID 0,0-329,175} that was originally added here
10-24 13:44:52.711: E/WindowManager(1520): android.view.WindowLeaked: Activity tigris.codes.attendance.system.Registration has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{40cff448 V.E..... R.....ID 0,0-329,175} that was originally added here
10-24 13:44:52.711: E/WindowManager(1520): at android.view.ViewRootImpl.<init>(ViewRootImpl.java:354)
10-24 13:44:52.711: E/WindowManager(1520): at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:216)
10-24 13:44:52.711: E/WindowManager(1520): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:69)
10-24 13:44:52.711: E/WindowManager(1520): at android.app.Dialog.show(Dialog.java:281)
10-24 13:44:52.711: E/WindowManager(1520): at tigris.codes.attendance.system.Registration$CreateNewProduct.onPreExecute(Registration.java:80)
10-24 13:44:52.711: E/WindowManager(1520): at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:586)
10-24 13:44:52.711: E/WindowManager(1520): at android.os.AsyncTask.execute(AsyncTask.java:534)
10-24 13:44:52.711: E/WindowManager(1520): at tigris.codes.attendance.system.Registration$1.onClick(Registration.java:57)
10-24 13:44:52.711: E/WindowManager(1520): at android.view.View.performClick(View.java:4204)
10-24 13:44:52.711: E/WindowManager(1520): at android.view.View$PerformClick.run(View.java:17355)
10-24 13:44:52.711: E/WindowManager(1520): at android.os.Handler.handleCallback(Handler.java:725)
10-24 13:44:52.711: E/WindowManager(1520): at android.os.Handler.dispatchMessage(Handler.java:92)
10-24 13:44:52.711: E/WindowManager(1520): at android.os.Looper.loop(Looper.java:137)
10-24 13:44:52.711: E/WindowManager(1520): at android.app.ActivityThread.main(ActivityThread.java:5041)
10-24 13:44:52.711: E/WindowManager(1520): at java.lang.reflect.Method.invokeNative(Native Method)
10-24 13:44:52.711: E/WindowManager(1520): at java.lang.reflect.Method.invoke(Method.java:511)
10-24 13:44:52.711: E/WindowManager(1520): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
10-24 13:44:52.711: E/WindowManager(1520): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
10-24 13:44:52.711: E/WindowManager(1520): at dalvik.system.NativeStart.main(Native Method)
10-2413:44:49.141:E/缓冲区错误（1520）：转换结果java.lang.NullPointerException:lock==null时出错
10-24 13:44:49.161:E/JSON解析器（1520）：解析数据org.JSON.JSONException时出错：输入结束，位于
10-2413:44:49.361:E/AndroidRuntime（1520）：致命