解决URL路径包含+等特殊符号，编码也无效的办法

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
      <system.webServer>
        <security>
          <requestFiltering allowDoubleEscaping="True"/>
        </security>
      </system.webServer>
    </configuration>

在WEB.CONFIG配置这样就可以解决