java.sql.SQLException：在org.hsqldb.jdbc.JDBCUtil.sqlException处关闭SQL语句

debugcn 发表于 Dev

罗伯托·费尔南德斯·迪亚兹（Roberto Fernandez Diaz）

我正在尝试在HSQLDB数据库中插入新行。我有以下代码：

private final String SQL_CREAR_ATLETA=" INSERT INTO ATLETA (ID_ATLETA, DNI, NOMBRE, APELLIDOS, GENERO, NACIMIENTO, CORREO, TELEFONO, CODIGOFEDERACION) VALUES (?,?,?,?,?,?,?,?,?) ";

@Override
public void crearAtleta(String dni, String nombre, String apellidos, char genero, Date nacimiento, String correo,
        String telefono, String codigoFederacion) throws SQLException {

    try {
        con = Jdbc.getConnection();
        pst = con.prepareStatement(SQL_CREAR_ATLETA);

        Integer idAtleta = calcularIdAtleta(); /*this is not null , it gives the next id , for example if there are 3 athlete in the DB , will return a 4*/

        pst.setString(1, String.valueOf(idAtleta)); // <- the code crash here
        pst.setString(2, nombre);
        pst.setString(3, apellidos);
        pst.setString(4, String.valueOf(genero));
        pst.setDate(5, new java.sql.Date(nacimiento.getTime()));
        pst.setString(6, dni);
        pst.setString(7, correo);
        pst.setString(8, telefono);
        pst.setString(9, codigoFederacion);
        pst.execute();

    } catch (SQLException e) {
        e.printStackTrace();
    }

}

程序在将pst.setString(1)id设置为sql语句的行崩溃。stackTrace是这个：

java.sql.SQLException: SQL sentence is closed
    at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source)
    at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source)
    at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source)
    at org.hsqldb.jdbc.JDBCStatementBase.checkClosed(Unknown Source)
    at org.hsqldb.jdbc.JDBCPreparedStatement.checkSetParameterIndex(Unknown Source)
    at org.hsqldb.jdbc.JDBCPreparedStatement.setParameter(Unknown Source)
    at org.hsqldb.jdbc.JDBCPreparedStatement.setString(Unknown Source)
    at reestructurado.persistencia.impl.AtletasGatewayImpl.crearAtleta(AtletasGatewayImpl.java:50)
    at ui.UInscripcion$1.actionPerformed(UInscripcion.java:316)
    at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
    at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
    at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
    at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
    at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
    at java.awt.Component.processMouseEvent(Unknown Source)
    at javax.swing.JComponent.processMouseEvent(Unknown Source)
    at java.awt.Component.processEvent(Unknown Source)
    at java.awt.Container.processEvent(Unknown Source)
    at java.awt.Component.dispatchEventImpl(Unknown Source)
    at java.awt.Container.dispatchEventImpl(Unknown Source)
    at java.awt.Component.dispatchEvent(Unknown Source)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
    at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
    at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
    at java.awt.Container.dispatchEventImpl(Unknown Source)
    at java.awt.Window.dispatchEventImpl(Unknown Source)
    at java.awt.Component.dispatchEvent(Unknown Source)
    at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
    at java.awt.EventQueue.access$500(Unknown Source)
    at java.awt.EventQueue$3.run(Unknown Source)
    at java.awt.EventQueue$3.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
    at java.awt.EventQueue$4.run(Unknown Source)
    at java.awt.EventQueue$4.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
    at java.awt.EventQueue.dispatchEvent(Unknown Source)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: org.hsqldb.HsqlException: sentencia SQL está cerrada
    at org.hsqldb.error.Error.error(Unknown Source)
    at org.hsqldb.error.Error.error(Unknown Source)
    ... 43 more

我不理解这个问题。我试图更改数据类型，但似乎无济于事。我的桌子是这样的：

米克助记符

即使您尚未公开所有相关代码，也可能会PreparedStatement在不同方法中重复使用同一对象。您可能正在calcularIdAtleta()使用中查询下一个玩家ID pst，这将在calcularIdAtleta()返回时使语句关闭。你不应该那样做。而是使用方法局部变量。它们使您的代码更易于阅读且不易出错。

尝试将您的方法更改为此，实质上是在PreparedStatement本地声明：

public void crearAtleta(String dni, String nombre, 
        String apellidos, char genero, 
        Date nacimiento, String correo,
        String telefono, String codigoFederacion) throws SQLException {

    PreparedStatement ps = null;

    try {
        ps = Jdbc.getConnection().prepareStatement(SQL_CREAR_ATLETA);

        Integer idAtleta = calcularIdAtleta();

        ps.setString(1, String.valueOf(idAtleta));
        ps.setString(2, nombre);
        ps.setString(3, apellidos);
        ps.setString(4, String.valueOf(genero));
        ps.setDate(5, new java.sql.Date(nacimiento.getTime()));
        ps.setString(6, dni);
        ps.setString(7, correo);
        ps.setString(8, telefono);
        ps.setString(9, codigoFederacion);
        ps.execute();

    } catch (SQLException e) {
        e.printStackTrace();
    } finally {
        if (ps != null) {
            ps.close();
        }
    }    
}

本文收集自互联网，转载请注明来源。

如有侵权，请联系[email protected] 删除。