本地主机连接在springboot中被拒绝

Question

我是springboot的新手。 我有一个 controller class 如下所示，

package com.example.controller;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class Controller {
    @RequestMapping("/hello")
    public String getHi() {
        return "Hi";
    }
}

<?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>2.5.0</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 project for Spring Boot</description>
    <properties>
        <java.version>16</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>

安慰，

Starting service [Tomcat]
Starting Servlet engine: [Apache Tomcat/9.0.46]
Initializing Spring embedded WebApplicationContextRoot WebApplicationContext: initialization completed in 626 ms
Tomcat started on port(s): 8080 (http) with context path ''

运行项目后，我尝试在浏览器中打开“localhost:8080/hello”，但我的 localhost 连接被拒绝。 在控制台中，我可以看到，Tomcat 服务器以 8080 端口启动。在此先感谢。

更新我通过在我的主要 class 中添加以下行来解决我的问题，

@Autowired
    Controller controller;

Answer 1

尝试访问 127.0.0.1:8080/hello 确保环回有效