java - NetBeans 在 JSP 中的 src ="<%=request.getContextPath()%>/images/image.png"中报告错误

Question

我所到之处:

<img alt="image" src="<%=request.getContextPath()%>/images/image.png" >

NetBeans 报告错误:

Bad value "   /images/image.png" for attribute "src" on element "img": WHITESPACE in PATH.
Syntax of IRI reference:
Any URL. For example: '/hello', '#canvas', or 'http://example.org/'. Characters should be represented in NFC and spaces should be escaped as '%20'.

From line 42, column 21; to line 42, column 64
(Rule Category: Attributes)

如何摆脱它？

Answer 1

不要在 JSP 文件中使用 Java 代码。使用JSTL。您可以使用下面的代码获取上下文路径

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>

${pageContext.servletContext.contextPath}
// OR
${pageContext.request.contextPath}

了解更多信息: Comparing JSTL and JSP Scriptlet Programming