Question

我在java应用程序中使用sqlite3数据库。如何以编程方式获取数据库中所有表的名称？我也试过google和stackoverflow，但还没找到一个简单的解决方案。这是我在PHP中使用的MySqli代码，我在Java-Sqlite3中尝试类似的方法

mysqli_select_db($conn, $database);
$res = mysqli_query($conn, "SHOW TABLES FROM " . $database . "");
while($cRow = mysqli_fetch_array($res, MYSQL_NUM)) {

    $namm=$cRow[0];


    $query = "SELECT COUNT(*) FROM " . $namm . "";
    $result = mysqli_query($conn,$query);
    $rows = mysqli_fetch_row($result);
    $namk = $rows[0];

    echo "<li type='square' style='margin-bottom:3px;'>" . $cRow[0] . " (" . $namk . ")</li>";
}
mysqli_close($conn);

Answer 1

ArrayList<String> tableNames = new ArrayList<String>();

SqlHelper sqlHelper = new SqlHelper(this, "MYSQLITE.db", null, 1);
SQLiteDatabase sqliteDatabase = sqlHelper.getWritableDatabase();
Cursor cursor = sqliteDatabase.rawQuery("SELECT name FROM sqlite_master WHERE type='table'", null);
while(cursor.moveToNext()){
   String tableName = cursor.getString(0);
   if(tableName.equals("android_metadata")){     
     continue;
   }else{
      tableNames.add(tableName);
   }
 }

Answer 2

您可以使用JDBC的内置API来浏览数据库元数据：

try (Connection conn = DriverManager.getConnection("jdbc:sqlite:sample.db");
     ResultSet rs = conn.getMetaData().getTables(null, null, null, null)) {
    while (rs.next()) {
        System.out.println(rs.getString("TABLE_NAME"));
    }
}

如何在Java中列出Sqlite3数据库中的表名

2 个答案: