報錯：org.apache.jasper.JasperException: /jsp/head.jsp (line: 1, column: 2) Page directive: illegal to
上面報錯提示的是org.apache.jasper.JasperException: /jsp/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)
即：在/ jsp /head.jsp中(行:1，列:2)頁指令:非法有多個不同值的內容類型(舊的:文本/ html;charset = utf - 8,新:text / html;charset = utf - 8)，可查看頭部信息是否過期，如過期錯誤的寫法：
應該改為：
同時如果頭部寫法無錯誤，仍然報org.apache.jasper.JasperException錯誤則考慮是否<%@taglib prefix="c"uri="http://java.sun.com/jsp/jstl/core"%>書寫有誤，可能沒有寫等於號(=)，或者標點符號少寫或有誤。
報錯：org.apache.jasper.JasperException: /jsp/head.jsp (line: 1, column: 2) Page directive: illegal to
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