Spring MVC 从 4 到 5 的视图问题

Question

在 pom.xml 以下依赖项。

<properties>
    <springframework.version>5.0.5.RELEASE</springframework.version>
    <!--<springframework.version>4.3.20.RELEASE</springframework.version>-->
</properties>

<dependencies>
    <!-- Spring -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <version>${springframework.version}</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>${springframework.version}</version>
    </dependency>

    <!-- Servlet+JSP+JSTL -->
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>4.0.1</version>
        <scope>provided</scope>
    </dependency>

    <dependency>
        <groupId>javax.servlet.jsp</groupId>
        <artifactId>javax.servlet.jsp-api</artifactId>
        <version>2.3.0</version>
        <scope>provided</scope>

    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</artifactId>
        <version>1.2</version>
    </dependency>

    <!-- jsr303 validation -->
    <dependency>
        <groupId>javax.validation</groupId>
        <artifactId>validation-api</artifactId>
        <version>1.1.0.Final</version>
    </dependency>
</dependencies>

如果我使用 spring 的 4.3.* 版本，一切正常。但是如果使用版本 spring 5.* 会出现以下错误。

Type Exception Report

Message org.apache.jasper.JasperException: java.lang.ClassNotFoundException: org.apache.jsp.WEB_002dINF.pages.CustomerForm_jsp

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exception

org.apache.jasper.JasperException: org.apache.jasper.JasperException: java.lang.ClassNotFoundException: org.apache.jsp.WEB_002dINF.pages.CustomerForm_jsp
    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:586)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:404)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
    org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:170)
    org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:314)
    org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1325)
    org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1069)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1008)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:925)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:974)
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:866)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
    org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:851)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)

也是 *.jsp 文件中的第一行

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>

<%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> 
... 

你可以在https://github.com/ashot123/SpringMVCForm找到完整的项目

Answer 1

你可以找到答案there。

你使用了commandName属性，这也是你的jsp无法编译的一个原因：

<form:form method="POST" commandName="customer"

如ticket 中所写 - 对于 spring 5，您必须使用 modelAttribute。