tomcat错误“Attribute value is quoted with which must be escaped when used within the value”
目录
错误
错误代码
错误原因
解决
正确代码一
正确代码二
正确代码三
错误
错误代码
<c:forEach var="trueName" items="<%=(List<String>)session.getAttribute("teacherTrueNameList")%>"><option value="${trueName}">${trueName}</option>
</c:forEach>错误原因
由于tomcat版本的原因，对双引号的处理产生的问题。
这里会报这种错误的原因就是双引号里面嵌套了双引号。
解决
就是处理双引号的问题啊。
正确代码一
将最外面的双引号改为单引号。
<c:forEach var="trueName" items='<%=(List<String>)session.getAttribute("teacherTrueNameList")%>'><option value="${trueName}">${trueName}</option>
</c:forEach>正确代码二
将双引号的表达式另写，然后用一个变量替代。
<%List<String> list=(List<String>)session.getAttribute("teacherTrueNameList");
%>
<c:forEach var="trueName" items="<%=list%>"><option value="${trueName}">${trueName}</option>
</c:forEach>正确代码三
使用"\"转义，编辑器会报错但是不影响运行结果，如：
<c:forEach var="trueName" items="<%=(List<String>)session.getAttribute(\"teacherTrueNameList\")%>"><option value="${trueName}">${trueName}</option>
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