Whitelabel 错误页面，其余 url 未在 spring boot 中执行

Question

spring 启动应用程序开发的新手。我运行应用程序作为 java 应用程序并收到以下错误。应用部署成功，不知道为什么会报这个错。。。脑袋疼。。先谢谢大家的帮助了。

Whitelabel Error Page This application has no explicit mapping for /error, so you are seeing this as a fallback. Sat Jul 13 21:37:31 IST 2019 There was an unexpected error (type=Not Found, status=404). No message available

已尝试针对堆栈溢出给出的解决方案，但无济于事。如果我在这里做错了，你能帮帮我吗？

package com.cpi.poc.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.cpi.poc.service.IService;

@RestController
@RequestMapping(value ="/test")
@ComponentScan(basePackages = "com.cgi.poc")
public class TestController {

    @Autowired
    IService service;
    @RequestMapping(value = "/greet" , method = RequestMethod.GET)
    public String testService(){
        String result = service.greet();
        return result;
    }

}

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>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.21.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.cgi.poc</groupId>
    <artifactId>test</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>test</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <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-tomcat</artifactId>
            <scope>provided</scope>
        </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>

Answer 1

检查是否有class :

@SpringBootApplication
@ComponentScan("com.cgi.poc")
@ComponentScan
public class Application {

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

如果您有上述class，则无需在控制器上放置组件扫描。使用 lsof 命令验证您的 java 服务在端口上运行 not.

Whitelabel 错误页面，其余 url 未在 spring boot 中执行

Whitelabel Error Page, rest urls not executed in springboot

java

pom.xml

spring-boot