【发布时间】：2013-12-06 04:25:17
【问题描述】：
我的为什么会出现这个异常？
public String setIDAndInsert(String fName, String lName, String gender, String date) {
String id = null;
ResultSet res;
try {
Connection con;
PreparedStatement pStatement;
String query = "insert into Users(FirstName,LastName,Gender,Date) " +
"values ( '" + fName + "' , '" + lName + "' , '" + gender + "', '" + date + "' ) ";
con = DriverManager.getConnection(...);
pStatement = con.prepareStatement(query, Statement.RETURN_GENERATED_KEYS);
pStatement.execute(query);
res = pStatement.getGeneratedKeys();
while (res.next()) {
id = String.valueOf(res.getInt(1));
}
} catch (SQLException sqle) {
sqle.printStackTrace();
}
return id;
}
以前这个方法可以正常工作，不知道为什么现在不行了！
我在控制台中的表格：
java.sql.SQLException: Failed to read auto-increment value from storage engine
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3491)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3423)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1936)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2060)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2536)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2465)
at com.mysql.jdbc.StatementImpl.execute(StatementImpl.java:734)
at Project.UserPage_Admin.setIDAndInsert(UserPage_Admin.java:145)
at Project.UserPage_Admin.addAction(UserPage_Admin.java:127)
at Project.UserPage_Admin.actionPerformed(UserPage_Admin.java:114)
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:6505)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
at java.awt.Component.processEvent(Component.java:6270)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4861)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4687)
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:2719)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:723)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:682)
at java.awt.EventQueue$3.run(EventQueue.java:680)
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:696)
at java.awt.EventQueue$4.run(EventQueue.java:694)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:693)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
【问题讨论】：
-
如果它抛出异常，请在此处发布该错误堆栈。
-
你提交了插入吗？
-
看看这个链接对你有没有帮助：ask.amoeba.co.in/…
-
int(12)是一种相当奇怪的数据类型（它是 +/- 39 位整数），您确定该值仍然适合 32 位（有符号）整数吗？ java 整数最多可以占用一个 int(10)（或“普通”SQL INTEGER）。另请参阅stackoverflow.com/questions/7346934/… -
@MarkRotteveel 我将其更改为
12用于训练alter语句为sql。应该是多少？