java.lang.IllegalArgumentException怎么解决？

jinling4388 2009-12-30 03:50:32

错误信息如下：
Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: Unsupported argument type com.synjones.angel.CardData at parameter 2 of function Syn_ReadMsg
at com.sun.jna.Function.convertArgument(Function.java:552)
at com.sun.jna.Function.invoke(Function.java:258)
at com.sun.jna.Library$Handler.invoke(Library.java:216)
at $Proxy0.Syn_ReadMsg(Unknown Source)
at com.synjones.angel.TestDlg.actionPerformed(TestDlg.java:302)
at java.awt.Button.processActionEvent(Unknown Source)
at java.awt.Button.processEvent(Unknown Source)
at java.awt.Component.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)

出错函数原型：public int Syn_ReadMsg(int iPort, int iIfOpen, CardData pINCardData);

调用如下：SynIDCardAPI.INSTANCE.Syn_ReadMsg(0, 0, idcardData);//idcardData为CardData 

导入的DLL语句：SynIDCardAPI INSTANCE = (SynIDCardAPI)Native.loadLibrary("E:\\SynIDCardAPI", SynIDCardAPI.class);

DLL中C++声明：int _stdcall Syn_ReadMsg( int iPort,int iIfOpen,IDCardData *pIDCardData );

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jinling4388 2011-12-02

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保存数据的类结构public class CardData 忘了继承Structure。写成

public class CardData entend Structure{

}

Smart_Vnote 2011-12-01

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我也头晕啊

JavaAlpha 2009-12-31

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[Quote=引用 16 楼 jinling4388 的回复:]
没有值为2的参数。是第三个参数我写错了吗？要怎么改？为什么错了？
[/Quote]

加个断点看一下在看一下 API的说明就知道你错误在那里了试试看看

JavaAlpha 2009-12-31

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在异常的地方加个断点跟一下看看

jinling4388 2009-12-31

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没有值为2的参数。是第三个参数我写错了吗？要怎么改？为什么错了？

lyj8808208 2009-12-31

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传的参数不匹配！！！！！！！

bayougeng 2009-12-31

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Unsupported argument type com.synjones.angel.CardData at parameter 2 of function Syn_ReadMsg
不是第二个参数，应该是值为2的参数。

jinling4388 2009-12-31

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CardData类型在C中的定义：

typedef struct tagIDCardData{

	char Name[32];		       

	char Sex[6];		

	char Nation[20];	

	char Born[18];		

	char Address[72];	

	char IDCardNo[38];	

	char GrantDept[32]; 

	char UserLifeBegin[18];	

	char UserLifeEnd[18];	

	char reserved[38];		

	char PhotoFileName[255];

}IDCardData;

下面是我在Java中的定义：

public class CardData {

	public	byte[] name;

	public	byte[] sex;

	public	byte[] nation;

	public	byte[] born;

	public	byte[] address;

	public	byte[] idCardNo;

	public	byte[] grantDept;

	public	byte[] userLifeBegin;

	public	byte[] userLifeEnd;

	public	byte[] reserved;

	public	byte[] photoFileName; 

		

	public CardData(){

			name=new byte[32];

			sex=new byte[6];

			nation=new byte[20];

			born=new byte[18];

			address=new byte[72];

			idCardNo=new byte[38];

			grantDept=new byte[32];

			userLifeBegin=new byte[18];

			userLifeEnd=new byte[18];

			reserved=new byte[38];

			photoFileName=new byte[255];

		}

}