Spring boot unable to resolve html view

Question

I created a Spring Starter Project using eclipse and only checked the Web dependencies checkbox. I wrote a simple html file and a controller, but I always get Whitelabel Error Page. I am not using any template engines, nor do I want to use one at this point. We will later use AngularJS for the frontend, but for the moment I just want to resolve a http page.

Controller:

package demo.web;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class MyController {

    @RequestMapping(value="/")
    public String goHome(){
        return "home";
    }
}

Main class:

package demo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class SpringBootTest5Application {

    public static void main(String[] args) {
        SpringApplication.run(SpringBootTest5Application.class, args);
    }
}

home.html

<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<h1>Hello World</h1>
</body>
</html>

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.test</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>SpringBootTest5</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.2.1.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <start-class>demo.SpringBootTest5Application</start-class>
        <java.version>1.7</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

Folder structure

Zeronex · Accepted Answer · 2015-02-12 11:26:45Z

2

<body data-ng-cloak>

is not valid XML and Thymeleaf validates the output, you can change Thymeleaf template mode to "Legacy HTML5" or change your view (home.html) to

<body data-ng-cloak="">

edited Feb 12, 2015 at 11:26

answered Feb 12, 2015 at 11:19

Zeronex

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Comments

Tome · Accepted Answer · 2015-02-12 10:30:04Z

1

I guess you are missing a dependency on a templating engine, such as Thymeleaf for instance. Adding this to your POM should be enough:

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

answered Feb 12, 2015 at 10:30

Tome

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4 Comments

Ciri Over a year ago

That did work, however, I do not wish to use any templating engine. The index.html file that we will eventually use contains the following line (AngularJS tag): <body data-ng-cloak> This throws an org.xml.sax.SAXParseException saying that data-ng-cloak must be followed by an "=" sign.

Tome Over a year ago

I think that without a templating engine, return "home"; will never work, you will have to handle the access to your homepage without using a Controller

Josh Hull Over a year ago

Tome, can you explain why you must have a templating engine to return an html file ("home")? This answer would be very helpful if you add some information to support that assertion.

Tome Over a year ago

The OP has placed the home.html file in a templates directory, which is the usual place for files that have to be processed by a template engine (like Thymeleaf thymeleaf.org/doc/tutorials/2.1/usingthymeleaf.html). If you just have to serve static content, Spring Boot autoconfigures a ResourceHandler so that placing something in the staticdirectory will be served directly.

lateralus · Accepted Answer · 2015-02-12 11:40:16Z

1

Does your spring-context have mapping for resources? In facts the page "home" does not exist, I suppose you have home.jsp in some folder like "jsp". What you need is configuring your spring-context.xml to elaborate the return String of Controller methods to get the right path for the page you want to display. For example:

<!-- Resolves views selected for rendering by @Controllers to .jsp resources in the /WEB-INF/views directory -->
    <beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <beans:property name="prefix" value="/WEB-INF/views/" />
        <beans:property name="suffix" value=".jsp" />
    </beans:bean>

This bean tells Spring to take the Controller output, prefix the folder and make as suffix the file extension to get the correct resource.

answered Feb 12, 2015 at 11:40

lateralus

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2 Comments

Ciri Over a year ago

Spring Boot configures an InternalResourceViewResolver that can be configured via spring.view.prefix and spring.view.suffix. Unfortunately, it didn't work for me. Adding a templating engine did the trick, but then I was back to my original problem where the templating engine didn't really understand AngularJS tags. I accepted the answer of Zeronex, apparently the solution was much simpler than trying to use no templating engine at all.

Ciri Over a year ago

Forgot my reference: docs.spring.io/spring-boot/docs/current/reference/html/…

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