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Java getOutputStream（）weblogic错误后无法调用getWriter（）

java jsf weblogic

Java getOutputStream（）weblogic错误后无法调用getWriter（）,java,jsf,weblogic,jsf-1.2,weblogic-10.x,Java,Jsf,Weblogic,Jsf 1.2,Weblogic 10.x,我有一个使用maven、JSF1.2和JDK1.5的web项目 并具有Jsp页面 <title>Celsius to Fahrenheit Convertor</title> </head> <body> <f:view> <h:form> <h:panelGrid columns="2"> <h:outputLabel value="Celsius"></h:outpu

我有一个使用maven、JSF1.2和JDK1.5的web项目

并具有Jsp页面

<title>Celsius to Fahrenheit Convertor</title>
</head>
<body>
<f:view>
  <h:form>
    <h:panelGrid columns="2">
      <h:outputLabel value="Celsius"></h:outputLabel>
      <h:inputText  value="#{temperatureConvertor.celsius}"></h:inputText>
    </h:panelGrid>
    <h:commandButton action="#{temperatureConvertor.celsiusToFahrenheit}" value="Calculate"></h:commandButton>
    <h:commandButton action="#{temperatureConvertor.reset}" value="Reset"></h:commandButton>
    <h:messages layout="table"></h:messages>
  </h:form>


  <h:panelGroup rendered="#{temperatureConvertor.initial!=true}">
  <h3> Result </h3>
  <h:outputLabel value="Fahrenheit "></h:outputLabel>
  <h:outputLabel value="#{temperatureConvertor.fahrenheit}"></h:outputLabel>
  </h:panelGroup>
</f:view>
</body>
请就这个问题和如何解决这个问题给我提建议

java.lang.IllegalStateException: strict servlet API: cannot call getWriter() after getOutputStream()
    at weblogic.servlet.internal.ServletResponseImpl.getWriter(ServletResponseImpl.java:299)
    at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:362)
    at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41)
    at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:140)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:155)
    at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:226)
    at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:124)
    at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:283)
    at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175)
    at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3395)
    at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
    at weblogic.security.service.SecurityManager.runAs(Unknown Source)
    at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2140)
    at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2046)
    at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1366)
    at weblogic.work.ExecuteThread.execute(ExecuteThread.java:200)
    at weblogic.work.ExecuteThread.run(ExecuteThread.java:172)