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  • roo java.lang.IllegalStateException: getOutputStream() has already been called for th

    When I use roo, often appear to the following questions:


    严重: Servlet.service() for servlet hr threw exception
    java.lang.IllegalStateException: getOutputStream() has already been called for this response
    at org.apache.catalina.connector.Response.getWriter(R esponse.java:611)
    at org.apache.catalina.connector.ResponseFacade.getWr iter(ResponseFacade.java:198)


    Why is there this problem? Who can give me a suggestion ? Thank you very much!
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