因为我Entity里面的属性字段是大写开始
比如User
UserName/*
保证有set()get()方法*/
Controller中
返回List<User> users
jsp页面中
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ page isELIgnored="false" %>
<c:forEach var="user" items="${users}">
<c:out value="${
user.UserName}"></c:out>
</c:forEach>
红色部分有错
因为EL是读取属性的getter方法的,一般按照属性首字母小写来处理
改为下面
c:forEach var="user" items="${users}">
<c:out value="${
user.userName}"></c:out>
</c:forEach>
查了好久,就因为一个大小写
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