Java JDBC - 如何执行匿名pl/sql块并获取结果集

import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Types;

public class Main {
    public static void main(String[] args) throws Exception {
       // DriverManager.registerDriver(new oracle.jdbc.OracleDriver());
        final Connection c = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:XE", "system", "manager");
        String plsql = 
        " declare " +  
        "    p_id varchar2(20) := null; " +
        "    l_rc sys_refcursor;" +
        " begin " +
        "    p_id := ?; " +
        "    ? := 'input parameter was = ' || p_id;" +
        "    open l_rc for " +
        "        select 1 id, 'abc' name from dual; " +
        "    ? := l_rc;" +
        " end;";

        CallableStatement cs = c.prepareCall(plsql);
        cs.setString(1, "12345");
        cs.registerOutParameter(2, Types.VARCHAR);
      //  cs.registerOutParameter(3, OracleTypes.CURSOR);

        cs.execute();

        System.out.println("Result = " + cs.getObject(2));

        ResultSet cursorResultSet = (ResultSet) cs.getObject(3);
        while (cursorResultSet.next ()){
            System.out.println (cursorResultSet.getInt(1) + " " + cursorResultSet.getString(2));
        } 
        cs.close();
        c.close();
    }
}