tomcat9文件上传returned a response status of 405 Method Not Allowed

在tomcat的conf目录下找到web.xml文件

打开后，在servlet标签中添加readonly属性为false,添加后如下：

    <servlet>
        <servlet-name>default</servlet-name>
        <servlet-class>org.apache.catalina.servlets.DefaultServlet</servlet-class>
        <init-param>
            <param-name>debug</param-name>
            <param-value>0</param-value>
        </init-param>
		<!--新增部分-->
        <init-param>
		    <param-name>readonly</param-name>
		    <param-value>false</param-value>
        </init-param>
        <init-param>
            <param-name>listings</param-name>
            <param-value>false</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>