Java 通过ApacheAxis2访问Web服务时出错

Java 通过ApacheAxis2访问Web服务时出错,java,apache,web-services,jsp,axis2,Java,Apache,Web Services,Jsp,Axis2,下面是错误,有人能帮我纠正这个错误吗。这是任何包丢失错误吗 org.apache.jasper.JasperException: Unable to compile class for JSP: An error occurred at line: 47 in the jsp file: /axis2-web/include/httpbase.jsp The type java.lang.CharSequence cannot be resolved. It is indirectly re

下面是错误,有人能帮我纠正这个错误吗。这是任何包丢失错误吗

org.apache.jasper.JasperException: Unable to compile class for JSP: 

An error occurred at line: 47 in the jsp file: /axis2-web/include/httpbase.jsp
The type java.lang.CharSequence cannot be resolved. It is indirectly referenced from required .class files
44: public String calculateHttpBase(HttpServletRequest aRequest) {
45: StringBuffer stringBuffer = new StringBuffer();
46: if (frontendHostUrl != null) {
47: stringBuffer.append(frontendHostUrl);
48: } else {
49: String scheme = aRequest.getScheme();
50: stringBuffer.append(scheme);
有什么帮助吗