求前辈解决java.lang.NumberFormatException: For input string: ""的问题

[GYUEYUE]

java.lang.NumberFormatException: For input string: ""
at java.lang.NumberFormatException.forInputString(Unknown Source)
at java.lang.Integer.parseInt(Unknown Source)
at java.lang.Integer.parseInt(Unknown Source)
at com.gem.dao.impl.BaseDaoImpl.add(BaseDaoImpl.java:72)
at com.gem.swing.MainSwing$2.actionPerformed(MainSwing.java:119)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$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.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)

[wsyangzuda]

你给出例子啊，光贴错误干嘛

[MiceRice]

at com.gem.dao.impl.BaseDaoImpl.add(BaseDaoImpl.java:72) 这是你自己干的吧？给数值一个空串？

[JPF1024]

贴代码。。。。。。。。。

[huntor]

没有输入验证。 永远不要相信用户的输入。

[城市那么空]

For input string: ""，字符转换的时候字符串是空的，所以报错，可以做个输入验证，不允许为空之类的

[郭梧悠]

com.gem.dao.impl.BaseDaoImpl.add(BaseDaoImpl.java:72)看看该类的地七十二页，看错误信息楼主是在操作gui？那问题就出在你没有任何输入的情况下就触发了某个事件（字符转换为数字事件），由于你没有任何输入，所以会转换失败，楼主可以添加异常处理，在catch里设置个默认值