如题，现在在java里将response.getOutputStream()作为参数传进一个方法中，然后在这个方法中调用birt的openReportDesign方法加载rptdesign文件，准备输出饼状图。现在刚运行到openReportDesign方法就提示这个错误。问题是response.getOutputStream()我只在java端调了一回啊，怎么能说已经被调用一回了呢？
在线等高手解答！！！
输出流在用完后要记得关闭
详细解决方案
，使用birt输出饼状图，报getOutputStream已被调用异常，怎么解决？
热度：9215 发布时间：2013-02-25 21:06:12.0
如题，现在在java里将response.getOutputStream()作为参数传进一个方法中，然后在这个方法中调用birt的openReportDesign方法加载rptdesign文件，准备输出饼状图。现在刚运行到openReportDesign方法就提示这个错误。问题是response.getOutputStream()我只在java端调了一回啊，怎么能说已经被调用一回了呢？
在线等高手解答！！！
输出流在用完后要记得关闭
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