获得错误“getOutputStream()已被调用此响应” [英] getting error "getOutputStream() has already been called for this response"
问题描述
我正在显示一些事件的报告。我希望控制器显示弹出窗口以进行保存并打开。
I am showing report on some event.I want controller to show popup for save and open .
我已经设置文件作为响应,设置响应后我返回查看。
I already set file in response , after setting response i am returning view.
现在我的问题是,
我收到错误java.lang.IllegalStateException:getOutputStream( )已经被调用了这个响应
I am getting error " java.lang.IllegalStateException: getOutputStream() has already been called for this response"
在我的控制器类中,我写了以下代码:
In my controller class i have written following code :
......一些代码.......
......some Code.......
InputStream is =
new FileInputStream(new File("c:/reports/test_jasper.pdf"));
response.setHeader("Content-Disposition","attachment;filename=\"test_jasper.pdf\"");
OutputStream opStream = response.getOutputStream();
IOUtils.copy(is, opStream);
response.flushBuffer();
HttpServletResponse response1 = new HttpServletResponse();
model.addAttribute(ABC, new abc());
model.addAttribute(DEF, new def());
return SOME_VIEW;
框架:
Spring-MVC,Hibernate
Spring-MVC,Hibernate
异常:
java.lang .IllegalStateException:getOutputStream()已被调用此响应
java.lang.IllegalStateException: getOutputStream() has already been called for this response
所需的O / P:
我想要回应来显示弹出窗口对于文件,并希望浏览器重定向到其他视图。
Desired O/P : I want response to show popup for file , and want browser to redirect to some other view.
推荐答案
在请求处理期间, HttpServletResponse正在调用.getWriter()
和 HttpServletResponse.getOutputStream()
。根据规范,使用OutputStream和Writer是非法的。
During the request processing both HttpServletResponse.getWriter()
and HttpServletResponse.getOutputStream()
are being called. And as per the spec, it is illegal to use both OutputStream and Writer.
尝试invoje HttpServletResponse时抛出异常.getWriter()其他地方/
The exception you are getting is being thrown while trying to invoje HttpServletResponse.getWriter()
somewhere else/
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