Method PUT is not allowed by Access-Control-Allow-Methods in preflight response

public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException { HttpServletRequest request = (HttpServletRequest) servletRequest; HttpServletResponse response = (HttpServletResponse) servletResponse; response.setHeader("Access-Control-Allow-Methods", "POST, GET, PATCH, DELETE, PUT, OPTIONS"); filterChain.doFilter(servletRequest, servletResponse); }

　　具体的添加过程，可以参考此链接

　　https://www.cnblogs.com/bien94/p/13188699.html

Method PUT is not allowed by Access-Control-Allow-Methods in preflight response

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