java.lang.IllegalStateException: getWriter() has already been called for this response问题解决
java.lang.IllegalStateException: getWriter() has already been called for this response问题解决
java.lang.IllegalStateException: getWriter() has already been called for this response
在执行下述代码时报错,
OutputStream out = getResponse().getOutputStream();
原因为代码中有打开的Response.getWriter(),未关闭,因调用点较多,不好一一排查。
通过查看代码,看到response中的usingWriter=true,随即想办法将该标志位设置为false。
response.reset(); 即可,注意reset后缓存消失,设置消失。
OutputStream和Writer在一个response中不能同时获得。