解决java.lang.IllegalStateException: getWriter() has already been called for this response

解决java.lang.IllegalStateException: getWriter() has already been called for this response,第1张

解决java.lang.IllegalStateException: getWriter() has already been called for this response

Caused by: java.lang.IllegalStateException: getWriter() has already been called for this response

错误有很多种情况

1. response同时只能使用getOutputStream和getWriter的一个方法(OutputStream和Writer在一个response中不能同时获得)。
2. 需要加response.reset()(清空缓冲区)

把Writer out= response.getWriter();改为Writer out= new BufferedWriter(new OutputStreamWriter(response.getOutputStream()));是一种解决方案

3.可能是你在spring_security模块的config包下里的拦截倒置的,把那个类里修改最后一个方法,参数配置为:/*/**, 不拦截所有请求,这样就可以了。

我的是第三中情况,希望能帮到你们,能点个赞就更好了!

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