救命!!!!!!!!!关于Compilation failed的问题，详情请进

我写了个dbsql.java文件，在jbuild6下编译生成dbsql.class文件，用来封装连库等信息（db2数据库）。再写一个jsp文件来应用，在jbuild6环境下测试通过。然后高高兴兴将dbsql.class文件拷到websphere3.5环境下的类目录下，将那个jsp文件也拷过来放到发布目录下。但是不幸的很出错了！请各位帮忙解决！！先谢了！具体错误如下:
Unhandled error! You might want to consider having an error page to report such errors more gracefully
com.sun.jsp.JspException: Compilation failed
at javax.servlet.ServletException.(ServletException.java:49)
at com.sun.jsp.JspException.(JspException.java:29)
at com.sun.jsp.compiler.Main.compile(Main.java:347)
at com.sun.jsp.runtime.JspLoader.compile(JspLoader.java:86)
at com.sun.jsp.runtime.JspLoader.loadJSP(JspLoader.java:210)
at....................