正如@Scratte 正确指出的那样，rs.getString(1) 正在返回一个已经包含替换字符的字符串.感谢他帮助我指出这个问题和本次讨论

As @Scratte correctly pointed out, rs.getString(1) was returning a String that already contained replacement characters. Thanks for his help in pointing me towards this question and this discussion

我最终实现了一个 ucanaccess JackcessOpenerInterface 并且工作得很好

I ended up implementing a ucanaccess JackcessOpenerInterface and worked wonderfully

package com.company.somepackage;

import com.healthmarketscience.jackcess.Database;
import com.healthmarketscience.jackcess.DatabaseBuilder;
import java.io.File;
import java.io.IOException;
import java.nio.charset.Charset;
import net.ucanaccess.jdbc.JackcessOpenerInterface;

public class CharsetOpener implements JackcessOpenerInterface {
    public Database open(File f, String pwd) throws IOException {
        DatabaseBuilder db = new DatabaseBuilder(f);
        db.setCharset(Charset.forName("ISO-8859-1"));
        try {
            db.setReadOnly(false);
            return db.open();
        } catch (IOException e) {
            db.setReadOnly(true);
            return db.open();
        }
   }
}

以及在我的连接生成器中的实现:

And for the implementation in my Connection generator:

public static Connection baseAccess(String base) {
    try {
        java.util.Properties propiedades = new java.util.Properties();
        propiedades.put("jackcessOpener", "com.company.somepackage.CharsetOpener");
        return DriverManager.getConnection(String.format("jdbc:ucanaccess://%s", base),propiedades);
    } catch (SQLException ex) {}
}

请注意，实际属性是 jackcessOpener，并且必须指向完全限定的类名.

Notice that the actual property is jackcessOpener and must point to a fully qualified class name.