Spring boot MVC：找不到JSP
[英]Spring boot MVC: can't find JSP
问题描述
Problem: I can't reach my view under WEB-INF/jsp on my Spring Boot web MVC app.
问题：我无法在 Spring Boot Web MVC 应用程序的WEB-INF/jsp下访问我的视图。
What I've done:我所做的：
this is my JSP: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>
this is my Controller: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);
}
}
this is my application.properties: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
and, at least, my main application:并且，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);
}
}
What I'll get if I go to http://localhost:8080/lista_utenti is: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
What am I doing wrong?我究竟做错了什么？
5 个解决方案
解决方案1
24 已采纳 2015-01-15 16:35:19
Zio, Are you sure you've included this dependency on your pom ? Zio，你确定你已经在你的 pom 中包含了这个依赖吗？
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
Without this, I'm getting your same error.没有这个，我会遇到同样的错误。
解决方案2
7 2016-09-09 21:39:34
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>required</scope>
</dependency>
Added this to my project that is in Intellj and it works..将此添加到我在 Intellj 中的项目中，并且可以正常工作。
解决方案3
1 2017-08-17 08:41:34
I'am adding this in my maven dependecies and now it's working我将它添加到我的 Maven 依赖项中，现在它正在工作
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
解决方案4
0 2020-02-12 04:34:29
Add Tomcat Embed Jasper Dependency in pom.xml file在 pom.xml 文件中添加 Tomcat Embed Jasper Dependency
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<version>9.0.30</version>
</dependency>
解决方案5
0 2020-04-13 08:37:29
If you've moved from using the standard thymeleaf project to Bootstrap (as I have), ensure you remove this dependency;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>
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