How do I fix HTTP Status 404 - Not Found on Intellij IDEA?-CodePudding

I've started my first job 2 months ago and it's been awhile since I've dealt with Spring. I'm trying to run Tomcat server, and display "/home" but I'm getting 404 on it. When I hover at my "home", IntelliJ IDEA is showing home.html . Error

HTTP Status 404 – Not Found
Type Status Report
Message The requested resource [/home] is not available
Description The origin server did not find a current representation for the target resource or is not willing to disclose that one exists.
Apache Tomcat/9.0.65

HTTP error

Code folders screenshot

Tomcat config

Tomcat deployment config

I've googled about it but it's doesn't fix it. Here is my code.

File HomeController.java

package com.example.demo;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class HomeController {

    @RequestMapping("/home")
public String landingPage() {
        return ("home");
    }
}

File home.html

<!DOCTYPE html>
<html lang="en"
      xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<h1>Landing page</h1>

</body>
</html>

File 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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.7.3</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo</name>
    <description>demo</description>
    <properties>
        <java.version>17</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>

        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

I also tried to run my older projects that works but now it doesn't.

Thank you in advance!

CodePudding user response：

try to use ModelAndView:

@RequestMapping("/")
public ModelAndView index () {
   ModelAndView modelAndView = new ModelAndView();
   modelAndView.setViewName("home");
   return modelAndView;
}

CodePudding user response：

You are using Spring Boot, which has an embedded Tomcat server. I believe you have a standalone Tomcat running on port 8080 on your machine, preventing Spring Boot from using its own embedded Tomcat.

Stop the standalone Tomcat and start the Spring Boot application again.

CodePudding user response：

Everything looks good. Spring boot doesn't require you to do any tomcat configuration.

The configuration you have should be the problem. Re create the project without the Tom Cat config and deployment config.

Check out this video: https://www.youtube.com/watch?v=HYGnVeCs0Yg&t=4235s