Php 第一次呼叫后截击错误的post响应

我想做的事

我正在尝试在我的应用程序中实现一个简单的离线功能，当设备离线时，员工可以休假，当设备在线时，更新将数据留给服务器的功能，为此我正在执行以下步骤

• 如果设备脱机，则将数据存储在本地数据库中
• 通过广播接收器检查连接更改
• 当设备联机时，通过网络调用将数据发布到web服务器

所有这些都可以正常工作，数据也可以正确地发布到web服务器上，但问题是，它只是第一次发布，之后就不起作用了

到目前为止我对这个问题的了解

每次我进行一次干净的安装时，它都工作得很好，但是当我再次尝试进行另一次网络调用以发布数据时，它就不工作了，相反，截击显示了一个错误的响应代码，这是成功的，但在后端根本没有发布数据

在php后端，echo 1表示成功，0表示失败，但不知道为什么即使数据未发布，volley每次都返回1

leaveFragment

        if (isNetworkAvailable(getContext())) {
        BackgroundWorkerLeave backgroundWorker = new BackgroundWorkerLeave(getContext());
        backgroundWorker.execute("leave", from_date, to_date, day_count, leave_type, reason, emp_id);
    } else {
        // save data offline
        db = new DatabaseHelper(getContext());
        db.insertItem(from_date, to_date, day_count, leave_type, reason);
    }

NetworkChangeReceiver//用于网络更改监控的广播接收器

公共类MyReceiver扩展了BroadcastReceiver{

@Override
public void onReceive(Context context, Intent intent) {
    Log.v("MyReceiver","Received intent..");
    if (intent.getAction().equals(ConnectivityManager.CONNECTIVITY_ACTION)) {
        NetworkInfo networkInfo = intent.getParcelableExtra(ConnectivityManager.EXTRA_NETWORK_INFO);
        if (networkInfo != null && networkInfo.getDetailedState() == NetworkInfo.DetailedState.CONNECTED) {
            DatabaseHelper db = new DatabaseHelper(context);
           int count = db.getofflineCount();
            // Toast.makeText(context, String.valueOf(count), Toast.LENGTH_LONG).show();
            //
             if (count > 0) {
               Toast.makeText(context, "Internet connected updating data...", Toast.LENGTH_SHORT).show();
               OfflineWorkerLeave offlineWorkerLeave = new OfflineWorkerLeave(context, db.getAllOfflineLeave());
               offlineWorkerLeave.updateLeave();
           }else {
               Toast.makeText(context, "All updated", Toast.LENGTH_SHORT).show();
           }
        } else if (networkInfo != null && networkInfo.getDetailedState() == NetworkInfo.DetailedState.DISCONNECTED) {
            Toast.makeText(context, "Offline mode activated..", Toast.LENGTH_SHORT).show();
        }
    }
}

}

DatabaseHelper.class

public class DatabaseHelper extends SQLiteOpenHelper {

private static final String DATABASE_NAME = "my.db";
private static final String TABLE_NAME = "employee_leave";
private static final String COL_ID = "col_id";
private static final String COL_DAYCOUNT = "daycount";
private static final String COL_FROM = "from_date";
private static final String COL_TO = "to_date";
private static final String COL_TYPE = "type";
private static final String COL_REASON = "reason";
Context context;
public DatabaseHelper(Context context) {
    super(context, DATABASE_NAME, null, 1);
    this.context = context;
}

@Override
public void onCreate(SQLiteDatabase db) {
    db.execSQL("CREATE TABLE IF NOT EXISTS leave(date_applied varchar, date_leave varchar, status varchar);");

    db.execSQL("CREATE TABLE IF NOT EXISTS " +
            TABLE_NAME + " (" + COL_ID + " INTEGER PRIMARY KEY AUTOINCREMENT," + COL_FROM +
            " TEXT," + COL_TO + " TEXT," + COL_DAYCOUNT +
            " TEXT," + COL_TYPE + " TEXT," +
            COL_REASON + " TEXT);");
}

@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

}

//this method will add users in the database
public void insertItem(String from, String to, String status) {
    SQLiteDatabase db = this.getWritableDatabase();
    db.execSQL("INSERT INTO leave VALUES ('" + from + "','" + to + "','" + status + "');");
    db.close();
}

public void insertItem(String from, String to, String day_count, String leave_type, String reason) {
    SQLiteDatabase db = this.getWritableDatabase();
    db.execSQL("INSERT INTO " + TABLE_NAME + " (from_date,to_date,daycount,type,reason)" +
            " VALUES ('" + from + "','" + to + "','" + day_count + "','" +
            leave_type + "','" + reason + "');");
    Toast.makeText(context, "Leave stored on the device", Toast.LENGTH_LONG).show();
    db.close();
}

public int getofflineCount() {
    SQLiteDatabase db = this.getReadableDatabase();
    Cursor c = db.rawQuery("SELECT * from " + TABLE_NAME, null);
    return c.getCount();
}

public Map<String, String> getAllOfflineLeave() {
    Map<String, String> params = new HashMap<String, String>();
    SharedPreferences sp_login = context.getSharedPreferences("login_status", Context.MODE_PRIVATE);
    SharedPreferences.Editor login_editor = sp_login.edit();
    String emp_id = sp_login.getString("userid", "null");

    SQLiteDatabase db = this.getReadableDatabase();
    Cursor c = db.rawQuery("SELECT * from " + TABLE_NAME + " ORDER BY " + COL_ID + " DESC LIMIT 1", null);
       if (c.moveToFirst()) {
           params.put("from_date", c.getString(1));
           params.put("to_date", c.getString(2));
           params.put("day_count", c.getString(3));
           params.put("leave_type", c.getString(4));
           params.put("reason", c.getString(5));
           params.put("emp_id", emp_id);
       }

    c.close();
    db.close();

    return params;
}

public List<Model> getAllLeave() {
    List<Model> leaveList = new ArrayList<>();

    SQLiteDatabase db = this.getReadableDatabase();
    Cursor c = db.rawQuery("SELECT * from leave", null);

    while (c.moveToNext()) {
        Model logs = new Model();
        String status = "";
        logs.setFdate(c.getString(0));
        logs.setTdate(c.getString(1));
        if (c.getString(2).equals("0")) {
            status = "Rejected";
        } else if (c.getString(2).equals("2")) {
            status = "Approved";
        } else {
            status = "Pending";
        }
        logs.setLeaveReason(status);
        leaveList.add(logs);
    }

    c.close();
    db.close();

    return leaveList;
}

public void deleteRecord() {
    SQLiteDatabase db = this.getWritableDatabase();
    db.execSQL("DELETE from leave");
    db.close();
}

public void deleteOfflineRecord() {
    SQLiteDatabase db = this.getWritableDatabase();
    db.execSQL("DELETE from " + TABLE_NAME);
    db.close();
}

public class OfflineWorkerLeave {
Context context;
DatabaseHelper db;
Map<String, String> params;

public OfflineWorkerLeave(Context context, Map<String, String> params) {
    this.context = context;
    this.params = params;
    db = new DatabaseHelper(context);
}

public void updateLeave() {
    String url = "exapmle.com/applyleave.php";
    StringRequest request = new StringRequest(Request.Method.POST, url,
            new Response.Listener<String>() {
                @Override
                public void onResponse(String response) {
                     if (response.contains("1\t")){
                        Toast.makeText(context, "Successfully data updated", Toast.LENGTH_SHORT).show();
                         db.deleteOfflineRecord();
                    } else if (response.contains("0\t")){
                        Toast.makeText(context, "Something went wrong", Toast.LENGTH_SHORT).show();
                    }
                }
            },
            new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {
                    Toast.makeText(context, error.toString(), Toast.LENGTH_SHORT).show();
                }
            }) {
        @Override
        protected Map<String, String> getParams() {
            return params;
        }
    };

    RequestQueue requestQueue = Volley.newRequestQueue(context);
    requestQueue.add(request);
}

public类DatabaseHelper扩展了SQLiteOpenHelper{
私有静态最终字符串数据库\u NAME=“my.db”；
私有静态最终字符串表\u NAME=“employee\u leave”；
私有静态最终字符串COL\u ID=“COL\u ID”；
私有静态最终字符串COL_DAYCOUNT=“DAYCOUNT”；
私有静态最终字符串COL_FROM=“FROM_date”；
私有静态最终字符串COL_TO=“TO_date”；
私有静态最终字符串COL_TYPE=“TYPE”；
私有静态最终字符串COL_REASON=“REASON”；
语境；
公共数据库助手（上下文）{
super（上下文，数据库名称，null，1）；
this.context=上下文；
}
@凌驾
public void onCreate（SQLiteDatabase db）{
execSQL（“如果不存在，则创建表leave（date_applied varchar，date_leave varchar，status varchar）；”；
db.execSQL（“如果不存在，则创建表”+
表“\u NAME+”（“+COL\u ID+”整型主键自动递增“+COL\u FROM+
“文本，”+COL_至+“文本，”+COL_日计数+
文本，“+COL_TYPE+”文本+
COL_REASON+“TEXT”）；”；
}
@凌驾
public void onUpgrade（SQLiteDatabase db，int-oldVersion，int-newVersion）{
}
//此方法将在数据库中添加用户
public void insertItem（字符串从、字符串到、字符串状态）{
SQLiteDatabase db=this.getWritableDatabase（）；
execSQL（“插入到左值（““+from+”、“+to+”、“+status+”）；”）；
db.close（）；
}
public void insertItem（字符串开始、字符串结束、字符串日期计数、字符串离开类型、字符串原因）{
SQLiteDatabase db=this.getWritableDatabase（）；
db.execSQL（“插入到”+表名+”（从日期、到日期、天数、类型、原因）+
“值（“+from+”、“+to+”、“+day_count+”、“”+
保留“_type+”、““+reason+”）；”；
Toast.makeText（上下文，“保留存储在设备上”，Toast.LENGTH_LONG.show（）；
db.close（）；
}
public int getofflineCount（）{
SQLiteDatabase db=this.getReadableDatabase（）；
游标c=db.rawQuery（“选择*自”+表名称，空）；
返回c.getCount（）；
}
公共地图getAllOfflineLeave（）{
Map params=新的HashMap（）；
SharedReferences sp_login=context.getSharedReferences（“登录状态”，context.MODE_PRIVATE）；
SharedReferences.Editor login\u Editor=sp\u login.edit（）；
字符串emp_id=sp_login.getString（“userid”，“null”）；
SQLiteDatabase db=this.getReadableDatabase（）；
游标c=db.rawQuery（“从“+表名+”中选择*按“+列ID+”描述限制1”排序，空）；
if（c.moveToFirst（））{
参数put（“from_date”，c.getString（1））；
参数put（“to_date”，c.getString（2））；
参数put（“day_count”，c.getString（3））；
参数put（“left_type”，c.getString（4））；
参数put（“原因”，c.getString（5））；
参数put（“emp_id”，emp_id）；
}
c、 close（）；
db.close（）；
返回参数；
}
公共列表getAllLeave（）{
List leaveList=new ArrayList（）；
SQLiteDatabase db=this.getReadableDatabase（）；
光标c=db.rawQuery（“选择*离开”，空）；
while（c.moveToNext（））{
模型日志=新模型（）；
字符串状态=”；
logs.setFdate（c.getString（0））；
logs.setTdate（c.getString（1））；
if（c.getString（2）.equals（“0”））{
status=“已拒绝”；
}else if（c.getString（2）.equals（“2”））{
status=“已批准”；
}否则{
status=“待定”；
}
logs.setLeaveReason（状态）；
添加（日志）；
}
c、 close（）；
db.close（）；
返回离职名单；
}
公共记录（）{
SQLiteDatabase db=this.getWritableDatabase（）；
db.execSQL（“从休假中删除”）；
db.close（）；
}
public void deleteOfflineRecord（）{
SQLiteDatabase db=this.getWritableDatabase（）；
db.execSQL（“从”+表名称中删除）；
db.close（）；
}

}

脱机工作leave.class

public class DatabaseHelper extends SQLiteOpenHelper {

private static final String DATABASE_NAME = "my.db";
private static final String TABLE_NAME = "employee_leave";
private static final String COL_ID = "col_id";
private static final String COL_DAYCOUNT = "daycount";
private static final String COL_FROM = "from_date";
private static final String COL_TO = "to_date";
private static final String COL_TYPE = "type";
private static final String COL_REASON = "reason";
Context context;
public DatabaseHelper(Context context) {
    super(context, DATABASE_NAME, null, 1);
    this.context = context;
}

@Override
public void onCreate(SQLiteDatabase db) {
    db.execSQL("CREATE TABLE IF NOT EXISTS leave(date_applied varchar, date_leave varchar, status varchar);");

    db.execSQL("CREATE TABLE IF NOT EXISTS " +
            TABLE_NAME + " (" + COL_ID + " INTEGER PRIMARY KEY AUTOINCREMENT," + COL_FROM +
            " TEXT," + COL_TO + " TEXT," + COL_DAYCOUNT +
            " TEXT," + COL_TYPE + " TEXT," +
            COL_REASON + " TEXT);");
}

@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

}

//this method will add users in the database
public void insertItem(String from, String to, String status) {
    SQLiteDatabase db = this.getWritableDatabase();
    db.execSQL("INSERT INTO leave VALUES ('" + from + "','" + to + "','" + status + "');");
    db.close();
}

public void insertItem(String from, String to, String day_count, String leave_type, String reason) {
    SQLiteDatabase db = this.getWritableDatabase();
    db.execSQL("INSERT INTO " + TABLE_NAME + " (from_date,to_date,daycount,type,reason)" +
            " VALUES ('" + from + "','" + to + "','" + day_count + "','" +
            leave_type + "','" + reason + "');");
    Toast.makeText(context, "Leave stored on the device", Toast.LENGTH_LONG).show();
    db.close();
}

public int getofflineCount() {
    SQLiteDatabase db = this.getReadableDatabase();
    Cursor c = db.rawQuery("SELECT * from " + TABLE_NAME, null);
    return c.getCount();
}

public Map<String, String> getAllOfflineLeave() {
    Map<String, String> params = new HashMap<String, String>();
    SharedPreferences sp_login = context.getSharedPreferences("login_status", Context.MODE_PRIVATE);
    SharedPreferences.Editor login_editor = sp_login.edit();
    String emp_id = sp_login.getString("userid", "null");

    SQLiteDatabase db = this.getReadableDatabase();
    Cursor c = db.rawQuery("SELECT * from " + TABLE_NAME + " ORDER BY " + COL_ID + " DESC LIMIT 1", null);
       if (c.moveToFirst()) {
           params.put("from_date", c.getString(1));
           params.put("to_date", c.getString(2));
           params.put("day_count", c.getString(3));
           params.put("leave_type", c.getString(4));
           params.put("reason", c.getString(5));
           params.put("emp_id", emp_id);
       }

    c.close();
    db.close();

    return params;
}

public List<Model> getAllLeave() {
    List<Model> leaveList = new ArrayList<>();

    SQLiteDatabase db = this.getReadableDatabase();
    Cursor c = db.rawQuery("SELECT * from leave", null);

    while (c.moveToNext()) {
        Model logs = new Model();
        String status = "";
        logs.setFdate(c.getString(0));
        logs.setTdate(c.getString(1));
        if (c.getString(2).equals("0")) {
            status = "Rejected";
        } else if (c.getString(2).equals("2")) {
            status = "Approved";
        } else {
            status = "Pending";
        }
        logs.setLeaveReason(status);
        leaveList.add(logs);
    }

    c.close();
    db.close();

    return leaveList;
}

public void deleteRecord() {
    SQLiteDatabase db = this.getWritableDatabase();
    db.execSQL("DELETE from leave");
    db.close();
}

public void deleteOfflineRecord() {
    SQLiteDatabase db = this.getWritableDatabase();
    db.execSQL("DELETE from " + TABLE_NAME);
    db.close();
}

public class OfflineWorkerLeave {
Context context;
DatabaseHelper db;
Map<String, String> params;

public OfflineWorkerLeave(Context context, Map<String, String> params) {
    this.context = context;
    this.params = params;
    db = new DatabaseHelper(context);
}

public void updateLeave() {
    String url = "exapmle.com/applyleave.php";
    StringRequest request = new StringRequest(Request.Method.POST, url,
            new Response.Listener<String>() {
                @Override
                public void onResponse(String response) {
                     if (response.contains("1\t")){
                        Toast.makeText(context, "Successfully data updated", Toast.LENGTH_SHORT).show();
                         db.deleteOfflineRecord();
                    } else if (response.contains("0\t")){
                        Toast.makeText(context, "Something went wrong", Toast.LENGTH_SHORT).show();
                    }
                }
            },
            new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {
                    Toast.makeText(context, error.toString(), Toast.LENGTH_SHORT).show();
                }
            }) {
        @Override
        protected Map<String, String> getParams() {
            return params;
        }
    };

    RequestQueue requestQueue = Volley.newRequestQueue(context);
    requestQueue.add(request);
}

public类脱机工作leave{
语境；
数据库辅助数据库；
映射参数；
public OfflineWorkerLeave（上下文、映射参数）{
this.context=上下文；
this.params=params；
db=新数据库助手（上下文）；
}
public void updatelave（）{
字符串url=“exapmle.com/applyleave.php”；
StringRequest=新的StringRequest（request.Method.POST，url，
新的Response.Listener（）{
@凌驾
公共void onResponse（字符串响应）{
if（response.contains（“1\t”））{
Toast.makeText（上下文，“成功更新数据”，Toast.LENGTH\u SHORT）.sh