java.lang.IllegalArgumentException: argument type mismatch 分数不多大家帮忙,该怎么解决

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java.lang.IllegalArgumentException: argument type mismatch    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)    at java.lang.reflect.Method.invoke(Method.java:597)    at org.apache.commons.beanutils.PropertyUtils.setSimpleProperty(PropertyUtils.java:1789)    at org.apache.commons.beanutils.PropertyUtils.setNestedProperty(PropertyUtils.java:1684)    at org.apache.commons.beanutils.PropertyUtils.setProperty(PropertyUtils.java:1713)    at org.apache.commons.beanutils.BeanUtils.setProperty(BeanUtils.java:1019)    at org.apache.commons.beanutils.BeanUtils.populate(BeanUtils.java:808)    at org.apache.struts.util.RequestUtils.populate(RequestUtils.java:1252)    at org.apache.struts.action.RequestProcessor.processPopulate(RequestProcessor.java:821)    at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:254)    at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)    at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)    at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)    at com.websh.esp.common.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:80)    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:879)    at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)    at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)    at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)    at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)    at java.lang.Thread.run(Thread.java:619)