jboss运行时报错org.apache.jasper.JasperException: Unable to compile class for JSP

[sandyli119]

在jboss上运行web应用时，有些页面没有问题，但有些页面会有如下问题错误：
13:24:42,765 ERROR [[jsp]] Servlet.service() for servlet jsp threw exception
org.apache.jasper.JasperException: Unable to compile class for JSP:

An error occurred at line: 87 in the jsp file: /bsi/BlackRedManageAct.jsp
The method searchRegest(TelewebDataSet, int, int) is undefined for the type CrsContact
84: else
85: tDataSet.setValue(s_Condition[i],getString(reque
st,s_Condition[i]));
86: }
87: tResult = crsContact.searchRegest(tDataSet ,startRow,endRow);
88:
89: if ( tResult.isError() ){
90: String sRCd = tResult.getResultCode();


An error occurred at line: 137 in the jsp file: /bsi/BlackRedManageAct.jsp
The method selectRegetDetail(int) is undefined for the type CrsContact
134: }
135: else if(job.equals("DETAIL")){
136: int id = Integer.parseInt(getString(request,"black_red_id"));
137: tResult = crsContact.selectRegetDetail(id);
138: if ( tResult.isError() ){
139: String sRCd = tResult.getResultCode();
140: String errCd = tResult.getResultCode();


An error occurred at line: 158 in the jsp file: /bsi/BlackRedManageAct.jsp
The method deleteReget(int) is undefined for the type CrsContact
155: }
156: else if(job.equals("DELETE")){
157: int id = Integer.parseInt(getString(request,"black_red_id"));
158: tResult = crsContact.deleteReget(id);
159: if ( tResult.isError() ){
160: String sRCd = tResult.getResultCode();
161: String errCd = tResult.getResultCode();

说明：系统是从weblogic移植到jboss上的，先前在weblogic上运行没有问题。系统中使用了EJB。
上列报错貌似在CrsContact（EJB程序）找不到三个方法，但是在EJB中确实存在这三个方法。
头疼半天，请高人指教！！！！！！！