Spring错误，Could not instantiate bean class

在网页运行的时候出现的错误...为什么不能实例化bean
在控制层中已经用annotation配置了的
Struts has detected an unhandled exception:

Messages: Could not instantiate bean class [cn.insurance.view.action.InsuranceInfoAction]: Constructor threw exception; nested exception is java.lang.StackOverflowError
Error creating bean with name 'insuranceInfoAction' defined in file [D:\Program Files\apache-tomcat-6.0.36\webapps\InsuranceRemind\WEB-INF\classes\cn\insurance\view\action\InsuranceInfoAction.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [cn.insurance.view.action.InsuranceInfoAction]: Constructor threw exception; nested exception is java.lang.StackOverflowError
Unable to instantiate Action, insuranceInfoAction, defined for 'insuranceInfoAction_uploadExcelUI' in namespace '/'Error creating bean with name 'insuranceInfoAction' defined in file [D:\Program Files\apache-tomcat-6.0.36\webapps\InsuranceRemind\WEB-INF\classes\cn\insurance\view\action\InsuranceInfoAction.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [cn.insurance.view.action.InsuranceInfoAction]: Constructor threw exception; nested exception is java.lang.StackOverflowError

File: org/springframework/beans/BeanUtils.java
Line number: 115

Stacktraces
Unable to instantiate Action, insuranceInfoAction, defined for 'insuranceInfoAction_uploadExcelUI' in namespace '/'Error creating bean with name 'insuranceInfoAction' defined in file [D:\Program Files\apache-tomcat-6.0.36\webapps\InsuranceRemind\WEB-INF\classes\cn\insurance\view\action\InsuranceInfoAction.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [cn.insurance.view.action.InsuranceInfoAction]: Constructor threw exception; nested exception is java.lang.StackOverflowError

Struts.xml

/WEB-INF/jsp/dateAction/uploadExcelUI.jsp

insuranceInfoAction.java   --控制层
    @Component("insuranceInfoAction")

@Scope("prototype")
public class InsuranceInfoAction extends ModelDriverBaseAction{

//文件上传--excle后缀.xls

// public String addExcelData() {
//

//

// return "addExcelData";
// }
//上传页面-Excle
public String uploadExcelUI() {
return "uploadExcelUI";
}
}

控制层中InsuranceInfoAction.java错误，
public class InsuranceInfoAction extends ModelDriverBaseAction{}
写成了，传递的应该是实体类，误写成InsuranceInfoAction，传递自己进去了
public class InsuranceInfoAction extends ModelDriverBaseAction{}

不是的， 目标转换类如果有带有参数的构造函数，转换时默认会找带有参数的构造函数；解决此问题，在目标转换类加入无参构造函数就可以了。