页面具体是这样报错的
HTTP Status 500 - /inc/common_head.jsp (line: 1, column: 2) Page directive: illegal to have multiple occurrences of contentType with different values (old: text/html;charset=UTF-8, new: text/html; charset=UTF-8)
type Exception report
message /inc/common_head.jsp (line: 1, column: 2) Page directive: illegal to have multiple occurrences of contentType with different values (old: text/html;charset=UTF-8, new: text/html; charset=UTF-8)
description The server encountered an internal error that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: /inc/common_head.jsp (line: 1, column: 2) Page directive: illegal to have multiple occurrences of contentType with different values (old: text/html;charset=UTF-8, new: text/html; charset=UTF-8)页面代码没错，我口头翻译了一下illegal to have multiple occurrences of contentType with different values，是包含页面和被包含页面的contentType设置不一样
包含页面原来的page指令是这样的
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
被包含页面原来的page指令是这样的
<%@ page contentType="text/html; charset=UTF-8"%>
我把被包含页面，也就是我异常中提示的/inc/common_head.jsp页面中的page指令重新改成了包含页面中的page指令，就解决了