使用hsqldb登录java程序？

您好，我的程序需要帮助，我需要从我的数据库hsqldb登录以访问mysql中的程序。一切都很好。hsqldb中的bat根本不想工作 我使用的hsqldb是内存数据库，这是我使用的代码

要连接到数据库，请执行以下操作：

Connection conn = null;

private static final String USERNAME = "root";
private static final String PASSWD = "toor";
private static final String CONN_STRING ="jdbc:hsqldb:Data/explorecalifornia";

 public static Connection Conne_HSQLDB(){


        try {
           Connection conn = DriverManager.getConnection(CONN_STRING,USERNAME,PASSWD);
            System.out.println("Connected");
            return conn;

           }catch(SQLException e){
               JOptionPane.showMessageDialog(null,e.getMessage()+ "\nCode: " + e.getErrorCode());
               return null;
        }
    }

这是我的登录代码

 if(UserTFD.getText().length()==0 || PassTFD.getText().length()==0){
                JOptionPane.showMessageDialog(null, "un champ est vider !");
            }else{


                String sql = "select * from LOGIN WHERE USERNAME=? and PASSWORD=?";
            try(
                    Connection conn=ConxDB.Conne_HSQLDB();
                    PreparedStatement pst=conn.prepareStatement(sql);


                    ){
                      pst.setString(1, UserTFD.getText());
                      pst.setString(2, PassTFD.getText());
                      ResultSet rs = pst.executeQuery();

                 if(rs.next()){
                         dispose();
                         new SettingGUI().setVisible(true);
                     }
                } catch (Exception e) {
                    System.out.println(e.getMessage());
                }


            }

而这个信息是错误的

user lacks privilege or object not found: LOGIN

对于我的数据库，这是我的代码

SET DATABASE UNIQUE NAME HSQLDB397995F7ED
SET DATABASE GC 0
SET DATABASE DEFAULT RESULT MEMORY ROWS 0
SET DATABASE EVENT LOG LEVEL 0
SET DATABASE SQL NAMES FALSE
SET DATABASE SQL REGULAR NAMES TRUE
SET DATABASE SQL REFERENCES FALSE
SET DATABASE SQL SIZE FALSE
SET DATABASE SQL TYPES FALSE
SET DATABASE SQL TDC DELETE TRUE
SET DATABASE SQL TDC UPDATE TRUE
SET DATABASE SQL TRANSLATE TTI TYPES TRUE
SET DATABASE SQL CONCAT NULLS TRUE
SET DATABASE SQL NULLS FIRST TRUE
SET DATABASE SQL UNIQUE NULLS TRUE
SET DATABASE SQL CONVERT TRUNCATE TRUE
SET DATABASE SQL AVG SCALE 0
SET DATABASE SQL DOUBLE NAN TRUE
SET DATABASE SQL LONGVAR IS LOB FALSE
SET DATABASE TRANSACTION CONTROL LOCKS
SET DATABASE DEFAULT ISOLATION LEVEL READ COMMITTED
SET DATABASE TRANSACTION ROLLBACK ON CONFLICT TRUE
SET DATABASE TEXT TABLE DEFAULTS ''
SET FILES WRITE DELAY 20
SET FILES BACKUP INCREMENT FALSE
SET FILES CACHE SIZE 10000
SET FILES CACHE ROWS 50000
SET FILES SCALE 1
SET FILES LOB SCALE 32
SET FILES DEFRAG 0
SET FILES NIO TRUE
SET FILES NIO SIZE 256
SET FILES LOG TRUE
SET FILES LOG SIZE 200
CREATE USER SA PASSWORD DIGEST 'd41d8cd98f00b204e9800998ecf8427e'
CREATE USER "root" PASSWORD DIGEST '7b24afc8bc80e548d66c4e7ff72171c5'
CREATE SCHEMA PUBLIC AUTHORIZATION DBA
SET SCHEMA PUBLIC
CREATE MEMORY TABLE PUBLIC.LOGIN(ID INTEGER GENERATED BY DEFAULT AS IDENTITY(START WITH 0) NOT NULL PRIMARY KEY,USERNAME VARCHAR(40),PASSWORD VARCHAR(40))
ALTER TABLE PUBLIC.LOGIN ALTER COLUMN ID RESTART WITH 3
ALTER SEQUENCE SYSTEM_LOBS.LOB_ID RESTART WITH 1
SET DATABASE DEFAULT INITIAL SCHEMA PUBLIC
GRANT USAGE ON DOMAIN INFORMATION_SCHEMA.YES_OR_NO TO PUBLIC
GRANT USAGE ON DOMAIN INFORMATION_SCHEMA.TIME_STAMP TO PUBLIC
GRANT USAGE ON DOMAIN INFORMATION_SCHEMA.CARDINAL_NUMBER TO PUBLIC
GRANT USAGE ON DOMAIN INFORMATION_SCHEMA.CHARACTER_DATA TO PUBLIC
GRANT USAGE ON DOMAIN INFORMATION_SCHEMA.SQL_IDENTIFIER TO PUBLIC
GRANT DBA TO SA
GRANT DBA TO "root"
SET SCHEMA PUBLIC
INSERT INTO LOGIN VALUES(1,'root','toor')
INSERT INTO LOGIN VALUES(2,'onee','onee')

---

您应该为数据库使用HSQLDB服务器，并连接到此服务器进行查询

像您这样的设置通常会遇到以下问题：

每个Java进程根据进程启动的目录解释相对文件：数据库路径。这可能会创建一个空数据库。您可以通过添加

来避免这种情况；ifexists=true

到连接URL的末尾。看到这个了吗

同时直接访问文件：不可能从多个java进程访问数据库

---

运行服务器允许您从不同进程可靠连接。

d41d8cd98f00b204e9800998ecf8427e它是空密码的编码值

请尝试以下凭据：

private静态最终字符串USERNAME=“sa”；
私有静态最终字符串PASSWD=“”；