獲取SQLiteException：在「Nov」附近：語法錯誤（代碼1）

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我想在活動android的幫助下開發本地數據庫。在模型類中，我有一個字段叫updated_date，它是一個字符串。字符串updated_date到日期格式，並試圖比較該字段與where子句中的今天的日期。但是，這樣做時，我已經在Active（）的where（）中得到了一個SQLiteException。獲取SQLiteException：在「Nov」附近：語法錯誤（代碼1）

模型類

@Column(name = "Updated_date") 
public String updated_date = "2016-11-16";

DBUtil類

public static int getTotalPreVisitCount() throws ParseException { 

    int i = new Select() 
      .from(Lead.class) 
      .where(Utility.getDateFromString(new Lead().updated_date) + " >= ?",Utility.getDateFromString(Utility.todayDate())) 
      .where(new Lead().lead_status + " = ",LMSUtil.PRE_VISIT) 
      .execute().size(); 
    return i; 
}

轉換字符串字段，以日期

public static Date getDateFromString(String dbdate) throws ParseException { 

    SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd"); 
    Date date = formatter.parse(dbdate); 
    return date; 
} 

**Logcat** 

11-16 18:11:16.232 29852-29987/com.purplepropshop.lms E/AndroidRuntime: FATAL EXCEPTION: main 
                    Process: com.purplepropshop.lms, PID: 29852 
                    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.purplepropshop.lms/com.purplepropshop.lms.ToDoListActivity}: android.database.sqlite.SQLiteException: near "Nov": syntax error (code 1): , while compiling: SELECT * FROM Leads WHERE Wed Nov 16 00:00:00 GMT+05:30 2016 >= 
                     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2377) 
                     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2440) 
                     at android.app.ActivityThread.access$800(ActivityThread.java:151) 
                     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1342) 
                     at android.os.Handler.dispatchMessage(Handler.java:110) 
                     at android.os.Looper.loop(Looper.java:193) 
                     at android.app.ActivityThread.main(ActivityThread.java:5344) 
                     at java.lang.reflect.Method.invokeNative(Native Method) 
                     at java.lang.reflect.Method.invoke(Method.java:515) 
                     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 
                     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:676) 
                     at dalvik.system.NativeStart.main(Native Method) 
                    Caused by: android.database.sqlite.SQLiteException: near "Nov": syntax error (code 1): , while compiling: SELECT * FROM Leads WHERE Wed Nov 16 00:00:00 GMT+05:30 2016 >= 
                     at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method) 
                     at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:893) 
                     at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:504) 
                     at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588) 
                     at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58) 
                     at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:37) 
                     at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:44) 
                     at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1339) 
                     at android.database.sqlite.SQLiteDatabase.rawQuery(SQLiteDatabase.java:1278) 
                     at com.activeandroid.Model.rawQuery(Model.java:349) 
                     at com.activeandroid.query.From.execute(From.java:155) 
                     at com.purplepropshop.lms.Utility.DBUtil.getTotalPreVisitCount(DBUtil.java:50) 
                     at com.purplepropshop.lms.ToDoListActivity.getLeadCount(ToDoListActivity.java:297) 
                     at com.purplepropshop.lms.ToDoListActivity.onCreate(ToDoListActivity.java:78) 
                     at android.app.Activity.performCreate(Activity.java:5361) 
                     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1088) 
                     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2331) 
                     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2440)  
                     at android.app.ActivityThread.access$800(ActivityThread.java:151)  
                     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1342)  
                     at android.os.Handler.dispatchMessage(Handler.java:110)  
                     at android.os.Looper.loop(Looper.java:193)  
                     at android.app.ActivityThread.main(ActivityThread.java:5344)  
                     at java.lang.reflect.Method.invokeNative(Native Method)  
                     at java.lang.reflect.Method.invoke(Method.java:515)  
                     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)  
                     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:676)  
                     at dalvik.system.NativeStart.main(Native Method)

請幫我解決問題。我不明白我犯了什麼錯誤。

來源

2016-11-16 ananya

您可以從Logcat中發佈錯誤嗎？ – rhari

錯誤在於如何在'getTotalPreVisitCount（）'中處理日期' –

@rhari我發佈了Logcat – ananya

在這一行：

where(Utility.getDateFromString(new Lead().updated_date) + " >= ?",Utility.getDateFromString(Utility.todayDate()))

你試圖讓SQLite的直接比較兩個Date對象這是不可能的。請嘗試比較它們的UNIX時間戳：

where(Utility.getDateFromString(new Lead().updated_date).getTime() + " >= ?",Utility.getDateFromString(Utility.todayDate()).getTime())

來源

2016-11-16 12:42:28 rhari

非常感謝你..它拯救了我的一天.. :) – ananya

獲取SQLiteException：在「Nov」附近：語法錯誤（代碼1）

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