Spring 启动 MVC：找不到 JSP

Question

问题： 我无法在我的 Spring Boot web MVC 应用程序的 WEB-INF/jsp 下访问我的视图。

我做了什么：

这是我的 JSP:

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
    <ul>
        <%--@elvariable id="users" type="java.util.List"--%>
        <c:forEach items="${utenti}" var="utente">
            <li>
                <c:out value="${utente.getUsername()}"/>
            </li>
        </c:forEach>
    </ul>
</body>
</html>

这是我的控制器：

@Controller
public class UtenteController {

    @Autowired
    private UtenteService utenteService;

    @RequestMapping("/lista_utenti")
    public ModelAndView getListaUtentiView(){
        ModelMap model = new ModelMap();
        model.addAttribute("utenti", this.utenteService.getListaUtenti());
        return new ModelAndView("lista_utenti", model);
    }

}

这是我的 application.properties:

# MVC
spring.view.prefix=/WEB-INF/jsp/
spring.view.suffix=.jsp

#Postgres config
spring.datasource.driverClassName=org.postgresql.Driver
spring.datasource.url=jdbc:postgresql://localhost:5432/DB_Test
spring.datasource.username=postgres
spring.datasource.password=postgres

至少，我的主要应用程序：

@Configuration
@EnableAutoConfiguration
@ComponentScan
public class SpringWebApplication extends SpringBootServletInitializer{

    public static void main(String[] args) {
        SpringApplication.run(SpringWebApplication.class, args);
    }

    @Override
    protected final SpringApplicationBuilder configure(final SpringApplicationBuilder application) {
        return application.sources(SpringWebApplication.class);
    }
}

如果我去 http://localhost:8080/lista_utenti 我会得到的是：

Whitelabel Error Page

This application has no explicit mapping for /error, so you are seeing this as a fallback.
Thu Jan 15 15:59:57 CET 2015
There was an unexpected error (type=Not Found, status=404).
No message available

我做错了什么？

Answer 1

Zio，你确定你已经在你的 pom 中包含了这个依赖项吗？

<dependency>
   <groupId>org.apache.tomcat.embed</groupId>
   <artifactId>tomcat-embed-jasper</artifactId>
   <scope>provided</scope>
</dependency>

没有这个，我会得到你同样的错误。

Answer 2

<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>required</scope>
</dependency>

将它添加到我在 Intellij 中的项目并且它有效..

Answer 3

我正在将它添加到我的 Maven 依赖项中，现在它正在运行

<dependency>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-tomcat</artifactId>
 <scope>provided</scope>
</dependency>

Answer 4

在pom.xml文件中添加Tomcat嵌入Jasper依赖

<dependency>
    <groupId>org.apache.tomcat.embed</groupId>
    <artifactId>tomcat-embed-jasper</artifactId>
    <version>9.0.30</version>
</dependency>

Answer 5

如果您已经从使用标准 thymeleaf 项目转移到 Bootstrap（就像我一样），请确保删除此依赖项；

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-thymeleaf</artifactId>
    </dependency>

Spring 启动 MVC：找不到 JSP

Spring boot MVC: can't find JSP

java

spring

jsp

spring-mvc

spring-boot