getOutputStream() has already been called for this response

来源：互联网发布：四维星软件免费下载编辑：程序博客网时间：2024/06/08 03:20

严重: Servlet.service() for servlet jsp threw exception<span style="color:#3333ff;">java.lang.IllegalStateException:</span> getOutputStream() has already been called for this responseat org.apache.catalina.connector.Response.getWriter(Response.java:604)at org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:198)at org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:125)at org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:118)at org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:186)at org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:118)at org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:77)at org.apache.jsp.download162_jsp._jspService(download162_jsp.java:143)at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)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:230)at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)at java.lang.Thread.run(Thread.java:745)

getOutputStream() has already been called for this response异常

jsp中出现此错误一般都是在jsp中使用了输出流os = response.getOutputStream();(如输出图片验证码，文件下载等)。

.jsp文件经发布后会在服务器（tomcat）中编译成对应的.jsp.java文件，在tomcat的work目录下的work目录下可以找到。

其代码最后有：

} finally {      _jspxFactory.releasePageContext(_jspx_page_context);    }

在释放在jsp中使用的对象，会调用response.getWriter(),因为这个方法是和response.getOutputStream()相冲突的，所以会出现以上这个异常。

解决办法：

在

os.close();后再加上两行

out.clear();

out = pageContext.pushBody();

0 0