(ServletRequestAttributes)RequestContextHolder.getRequestAttributes().getResponse()

回答: 在代码(ServletRequestAttributes)RequestContextHolder.getRequestAttributes().getResponse()中，会报空指针异常java.lang.NullPointerException: null。原因是getRequestAttributes()方法返回的是null，而getResponse()方法需要一个非空的ServletRequestAttributes对象作为参数。为了解决这个问题，可以参考第二种解决办法，在开启新线程之前，将RequestAttributes对象设置为子线程共享。具体做法是在开启新线程之前添加以下代码：
ServletRequestAttributes sra = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
RequestContextHolder.setRequestAttributes(sra, true);\[2\]这样就可以在新线程中获取到非空的ServletRequestAttributes对象，进而调用getResponse()方法。
#### 引用[.reference_title]
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