JDK和tomcat版本冲突

错误：

十二月 20, 2018 10:06:55 上午 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet jsp threw exception
org.apache.jasper.JasperException: Unable to compile class for JSP: 

An error occurred at line: 1 in the generated java file
The type java.io. InputStream cannot be resolved. It is indirectly referenced from required .class files

Stacktrace:
	at org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:92)
	at org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:330)
	at org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:439)
	at org.apache.jasper.compiler.Compiler.compile(Compiler.java:349)
	at org.apache.jasper.compiler.Compiler.compile(Compiler.java:327)
	at org.apache.jasper.compiler.Compiler.compile(Compiler.java:314)
	at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:592)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
	at java.lang.Thread.run(Thread.java:748)

出现这个错误的原因是tomcat和jdk版本不兼容导致的，拿我的例子来说，tomcat是tomcat7.0.26，这个版本的tomcat与jdk1.8是不兼容的，这个版本的tomcat的lib文件夹中有个jar叫做ecj-3.7.1.jar，而在最新的tomcat7.0.xx中，比如apache-tomcat-7.0.75中，这个jar被ecj-4.4.2.jar所取代，所以这种错误该怎么解决呢？方法太多了：

一、更新tomcat的版本到apache-tomcat-7.0.75

或者

二、替换ecj-3.7.1.jar为ecj-4.4.2.jar，下载地址如下

http://www.java2s.com/Code/Jar/e/Downloadecj422sourcesjar.htm