ajax实现jsp页面局部刷新 报错java.io.IOException: Stream closed

版权声明：博客知识产权来源命运的信徒，切勿侵权 https://blog.csdn.net/qq_37591637/article/details/84578340

严重: Servlet.service() for servlet [jsp] in context with path [/Hibernate] threw exception [java.lang.IllegalStateException: Exception occurred when flushing data] with root cause
java.io.IOException: Stream closed
	at org.apache.jasper.runtime.JspWriterImpl.ensureOpen(JspWriterImpl.java:210)
	at org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:115)
	at org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:194)
	at org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:125)
	at org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:79)
	at org.apache.jsp.ajax_jsp._jspService(ajax_jsp.java:123)
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:439)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:218)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:958)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:452)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1087)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:744)

我是一个ajax的初学者，在复制别人代码的时候

加了out.close();

由于这个例子是1秒刷新一次的，访问频繁导致的，无须out.close，

<%@ page contentType="text/html; charset=utf-8" %> 
<%  
    //设置输出信息的格式及字符集  
    response.setContentType("text/xml; charset=UTF-8");  
    response.setHeader("Cache-Control","no-cache");  
    out.println("<response>");  
      
    for(int i=0;i<2;i++){  
    out.println("<name>"+(int)(Math.random()*10)+  
       "号传感器</name>");  
    out.println("<count>" +(int)(Math.random()*100)+ "</count>");  
    }  
    out.println("</response>");  
    
    /* out.close(); */
    %>