无法在Spring Boot应用程序(Tomcat服务器)中运行localhost [英] Unable to run localhost in Spring Boot application (Tomcat server)

问题描述

我一直在使用以下教程学习Spring: https://www. youtube.com/playlist?list=PLqq-6Pq4lTTbx8p2oCgcAQGQyqN8XeA1x

I've been learning Spring using the following tutorials: https://www.youtube.com/playlist?list=PLqq-6Pq4lTTbx8p2oCgcAQGQyqN8XeA1x

我创建了一个Maven项目，并尝试在参考这些视频的同时运行Spring Boot应用程序:

I have created a Maven project and tried to run the Spring Boot application while referring to these videos:

https://www.youtube .com/watch?v = E7_a-kB46LU& index = 9& list = PLqq-6Pq4lTTbx8p2oCgcAQGQyqN8XeA1x

我试图在Tomcat服务器上运行我的Spring应用程序，但是localhost无法正常工作. (端口8080)

I tried to run my Spring application on Tomcat server but the localhost isn't working. (Port 8080)

我的pom.xml看起来像这样:

My pom.xml looks like this:

<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>io.javabrains.springbootquickstart</groupId>
  <artifactId>course-api-new</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <name>Java Brains Course API</name>

  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.4.2.RELEASE</version>
  </parent>

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

  <properties>
        <java.version>1.8</java.version>
  </properties>

</project>

CourseApiApp.java:

CourseApiApp.java :

package io.javabrains.springbootstarter;

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

@SpringBootApplication
public class CourseApiApp {

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

    }

}

根据视频本地主机，在运行应用程序时应显示白名单"错误，但根本不会运行.

According to the video localhost should display Whitelist error on running the application, but it doesn't run at all.

任何帮助将不胜感激，谢谢！

Any help would be appreciated, thanks!

推荐答案

我建议您从头开始项目.要创建有效的spring-boot项目，您需要一个非常好的基于Web的生成器，用于spring-boot入门应用程序.

I would suggest that you start your project from beginning. To create a valid spring-boot project you have a very good web based generator for spring-boot starter applications.

• https://start.spring.io/

对于具有嵌入式tomcat的Web应用程序，应使用web项目.

For a web application with an embedded tomcat you should use web project.

使用STS，您可以通过选择new -> spring starter project来创建相同的内容.

Using STS you can create the same by choosing new -> spring starter project.

将出现一个向导，您可以选择项目信息:

A wizard will appear and you can choose your project informations:

然后在第二步中进行依赖:

And then in the second step you dependencies:

生成项目后，您的pom.xml应该如下所示:

After generating your project your pom.xml should look like that:

<?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>com.example</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

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

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.4.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</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>

您的应用程序应正常启动，并且tomcat在localhost:8080上侦听.

Your application should start normally and tomcat listens on localhost:8080.

编辑 入门者只有一个新设计:

EDIT The starter just have a new design:

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