java.lang.IllegalStateException: getOutputStream() has already been called for this response
2017-01-11 00:00
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解决:
由于jsp container在处理完成请求后会调用releasePageContet方法释放所用的PageContext object,并且同时调用
getWriter方法,由于getWriter方法与在jsp页面中使用流相关的getOutputStream方法冲突,所以会造成这种异常,解决
办法是:只需要在jsp页面的最后加上两条语句:
out.clear();
out=pageContext.pushBody();即可(其中out,pageContext均为jsp内置对象!)
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