JSP file not rendering in Spring Boot web application

You will need not one but two dependencies (jasper and jstl) in your pom.xml for this to work.

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

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

    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</artifactId>
    </dependency>
</dependencies>

For me worked the same like Dan mentioned. Removing the provided scope.

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

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

Thanks guy's!

Make sure that your pom.xml specifies the Tomcat JSP dependency as follows:

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

It seems that embedded Tomcat treats the JSP rendering as optional.

As mentioned below, this JAR is sometimes necessary as well:

<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>jstl</artifactId>
    <scope>provided</scope>
</dependency>

(I added provided since this JAR should be included by the servlet container.

Worked for me too but, I had to remove

<scope>provided</scope>

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