java - SQLite 数据库中的奇怪编码 : How to retrieve string values with JDBC?

Question

我有

    Class.forName("org.sqlite.JDBC");
    Connection conn = DriverManager.getConnection("jdbc:sqlite:cities.db");
    Statement stat = conn.createStatement();

    ResultSet rs = stat.executeQuery("select * from cities;");+

    while (rs.next()) {
        byte[] bytes = rs.getBytes("country");
        String country = new String(bytes, "utf-8");
        System.out.println(country);
    }

    rs.close();
    conn.close();

我的输出显示 � 表示 ä、ö、ü 等字符。

如果我从命令行运行 sqlite3 并从那里查询表，字符没问题...

“编译指示编码；”显示 utf-8...

如果我调试，字节数组在“ü”的位置有“-127”...

如何解决？ 是什么导致了这个问题？

链接到示例 SQLite 文件(只有一行):

https://www.dropbox.com/s/6nvl737b6picbie/cities.db?dl=0

Answer 1

你能试试吗

Class.forName(org.sqlite.JDBC.class.getCanonicalName());
String url = "jdbc:sqlite:";
SQLiteConfig config = new SQLiteConfig();
config.setEncoding(SQLiteConfig.Encoding.UTF8);
Connection conn = DriverManager.getConnection(url, config.toProperties());
Statement stat = conn.createStatement();

ResultSet rs = stat.executeQuery("select * from cities;");+

while (rs.next()) {
    String country = rs.getString("country");
    System.out.println(country);
}