org.apache.jasper.JasperException: getOutputStream() has already been called for

[littleec]

出错了！！看不出来问题在哪？

严重: Servlet.service() for servlet jsp threw exception
org.apache.jasper.JasperException: getOutputStream() has already been called for this response
at org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:522)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:410)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
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:128)
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:293)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
at java.lang.Thread.run(Unknown Source)

[crazylaa]

org.apache.jasper.JasperException: getOutputStream() has already been called for this response

确实看不出来。。。

[littleec]

我将servlet-api删除了后：

javax.servlet.ServletException: Wrapper cannot find servlet class servlets.tmodypass or a class it depends on

[叶涛网站推广优化]

贴代码吧

[dracularking]

这个问题很有可能是这样引起的

在servlet中你可以调用getOutputStream或getWriter，但只能两者其一
违规调用会报异常

[aass5010]

楼主解决了麻烦告诉我下，邮箱[e-mail]