SQLException：值的数量不相同

我使用Apache Derby作为嵌入式数据库。

DatabaseCheck.java

该类用于创建表。

package normal; //This class if s for checking the database. If the database doesn't exists, this class will create one import java.sql.*; public class DatabaseCheck { private Connection con; public DatabaseCheck() { createConnection(); try { Statement st = con.createStatement(); st.executeQuery("select * from PhoneData"); new MainForm(); } catch(Exception e) { System.out.println(e.getLocalizedMessage()); if(e.getLocalizedMessage().equals("Schema 'SA' does not exist")) { try { PreparedStatement ps = con.prepareStatement("create table PhoneData(ids integer generated always as identity constraint pkId primary key,names varchar(20),mobileNumber1 varchar(20),mobileNumber2 varchar(20),landNumber1 varchar(20),landNumber2 varchar(20),address varchar(100),category varchar(20),nickName varchar(20),email varchar(20),middleName varchar(20),lastName varchar(20),city varchar(20),country varchar(20))"); ps.execute(); PreparedStatement ps2 = con.prepareStatement("create table Emails(accountType varchar(10) constraint pk_user primary key,userName varchar(50) ,passwords varchar(50))"); ps2.execute(); new MainForm(); } catch(Exception e2) { e2.printStackTrace(); } } } finally { closeConnection(); } } public void createConnection() { try { Class.forName("org.apache.derby.jdbc.EmbeddedDriver"); con = DriverManager.getConnection("jdbc:derby:PhoneBook;create=true","sa","sasasa"); } catch(Exception e) { e.printStackTrace(); } } public void closeConnection() { try { con.close(); } catch(Exception e) { e.printStackTrace(); } } } 

创建表后，我使用另一个类中的方法插入数据。

  public void createConnection() { try { Class.forName("org.apache.derby.jdbc.EmbeddedDriver"); con = DriverManager.getConnection("jdbc:derby:PhoneBook","sa","sasasa"); } catch(Exception e) { e.printStackTrace(); } } @Override public void closeConnection() { try { con.close(); } catch(Exception e) { e.printStackTrace(); } } @Override public String insertData(String firstName, String mobileNumber1, String mobileNumber2, String landNumber1, String landNumber2, String streetAddress, String category, String nickName, String email, String middleName, String lastName, String city, String country) { String resultString=""; try { createConnection(); con.setAutoCommit(false); PreparedStatement ps = con.prepareStatement("insert into PhoneData values(?,?,?,?,?,?,?,?,?,?,?,?,?)"); ps.setString(1, firstName); ps.setString(2, mobileNumber1); ps.setString(3, mobileNumber2); ps.setString(4, landNumber1); ps.setString(5,landNumber2); ps.setString(6,streetAddress); ps.setString(7,category); ps.setString(8,nickName); ps.setString(9,email); ps.setString(10,middleName); ps.setString(11,lastName); ps.setString(12,city); ps.setString(13,country); int result = ps.executeUpdate(); if(result>0) { resultString = "Data Entered Successfully"; } else { resultString = "Data Enter Failed"; } con.commit(); } catch(SQLException se) { try { con.rollback(); resultString = "Data rollbacked because of an error"; se.printStackTrace(); } catch(Exception e) { resultString = "Data insertion failed and rollback failed because of an error"; e.printStackTrace(); } } finally { closeConnection(); } return resultString; } 

由于以下错误，我从未设法插入任何内容

 java.sql.SQLSyntaxErrorException: The number of values assigned is not the same as the number of specified or implied columns. at org.apache.derby.impl.jdbc.SQLExceptionFactory40.getSQLException(Unknown Source) at org.apache.derby.impl.jdbc.Util.generateCsSQLException(Unknown Source) at org.apache.derby.impl.jdbc.TransactionResourceImpl.wrapInSQLException(Unknown Source) at org.apache.derby.impl.jdbc.TransactionResourceImpl.handleException(Unknown Source) at org.apache.derby.impl.jdbc.EmbedConnection.handleException(Unknown Source) at org.apache.derby.impl.jdbc.ConnectionChild.handleException(Unknown Source) at org.apache.derby.impl.jdbc.EmbedPreparedStatement.(Unknown Source) at org.apache.derby.impl.jdbc.EmbedPreparedStatement20.(Unknown Source) at org.apache.derby.impl.jdbc.EmbedPreparedStatement30.(Unknown Source) at org.apache.derby.impl.jdbc.EmbedPreparedStatement40.(Unknown Source) at org.apache.derby.jdbc.Driver40.newEmbedPreparedStatement(Unknown Source) at org.apache.derby.impl.jdbc.EmbedConnection.prepareStatement(Unknown Source) at org.apache.derby.impl.jdbc.EmbedConnection.prepareStatement(Unknown Source) at normal.DatabaseHandler.insertData(DatabaseHandler.java:56) at normal.InsertForm$InsertDataAction.actionPerformed(InsertForm.java:385) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252) at java.awt.Component.processMouseEvent(Component.java:6504) at javax.swing.JComponent.processMouseEvent(JComponent.java:3321) at java.awt.Component.processEvent(Component.java:6269) at java.awt.Container.processEvent(Container.java:2229) at java.awt.Component.dispatchEventImpl(Component.java:4860) at java.awt.Container.dispatchEventImpl(Container.java:2287) at java.awt.Component.dispatchEvent(Component.java:4686) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422) at java.awt.Container.dispatchEventImpl(Container.java:2273) at java.awt.Window.dispatchEventImpl(Window.java:2713) at java.awt.Component.dispatchEvent(Component.java:4686) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:707) at java.awt.EventQueue.access$000(EventQueue.java:101) at java.awt.EventQueue$3.run(EventQueue.java:666) at java.awt.EventQueue$3.run(EventQueue.java:664) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87) at java.awt.EventQueue$4.run(EventQueue.java:680) at java.awt.EventQueue$4.run(EventQueue.java:678) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76) at java.awt.EventQueue.dispatchEvent(EventQueue.java:677) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105) at java.awt.EventDispatchThread.run(EventDispatchThread.java:90) Caused by: java.sql.SQLException: The number of values assigned is not the same as the number of specified or implied columns. at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source) at org.apache.derby.impl.jdbc.SQLExceptionFactory40.wrapArgsForTransportAcrossDRDA(Unknown Source) ... 51 more Caused by: ERROR 42802: The number of values assigned is not the same as the number of specified or implied columns. at org.apache.derby.iapi.error.StandardException.newException(Unknown Source) at org.apache.derby.impl.sql.compile.InsertNode.bindStatement(Unknown Source) at org.apache.derby.impl.sql.GenericStatement.prepMinion(Unknown Source) at org.apache.derby.impl.sql.GenericStatement.prepare(Unknown Source) at org.apache.derby.impl.sql.conn.GenericLanguageConnectionContext.prepareInternalStatement(Unknown Source) ... 45 more BUILD SUCCESSFUL (total time: 10 seconds) 

为什么是这样？

Answer 1

您的INSERT查询不正确，当您使用该类型的语法时，假设所有文件都必须具有值，并且由于您具有auto_incremented列，因此您没有包含它使其无效。

因此，要更正语法，必须显式声明所有列，例如

 INSERT INTO tableName(col1, col2) VALUES (?,?) 

如果我没弄错的话，你的PhoneData表中有14列你只为13列提供了13个值，不包括auto_increment ID 。 准备好的语句的正确查询应该如下所示，

 INSERT INTO PhoneData( Names, mobileNumber1,..., country) VALUES (?,?,...,?)