1. 通过静态方法获取
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ServletRequestAttributes servletRequestAttributes = (ServletRequestAttributes)RequestContextHolder.getRequestAttributes();

HttpServletRequest request = servletRequestAttributes.getRequest();
HttpServletResponse response = servletRequestAttributes.getResponse();
  1. 通过参数直接获取，在方法上加上参数，Springboot就会自动绑定，可以直接使用。
    如果有多个参数，把这两个加到后面即可。
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@GetMapping(value = "/test")
public String test(String str,
                   HttpServletRequest request,HttpServletResponse response) {
}
  1. 注入到类，这样就不用每个方法都写了
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@Autowired
private HttpServletRequest request;
@Autowired
private HttpServletResponse response;

@GetMapping(value = "/test")
public String test() {
}