java 依赖问题“SpringBootServletInitializer 无法解析为类型”

声明:本页面是StackOverFlow热门问题的中英对照翻译,遵循CC BY-SA 4.0协议,如果您需要使用它,必须同样遵循CC BY-SA许可,注明原文地址和作者信息,同时你必须将它归于原作者(不是我):StackOverFlow 原文地址: http://stackoverflow.com/questions/44485589/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me): StackOverFlow

提示:将鼠标放在中文语句上可以显示对应的英文。显示中英文
时间:2020-11-03 08:11:14  来源:igfitidea点击:

Dependencies issue "SpringBootServletInitializer cannot be resolved to a type"

javaspringmavenspring-boot

提问by Dima Maligin

I'm getting SpringBootServletInitializer cannot be resolved to a typeas far as I understand this is a dependencies issue.

我得到SpringBootServletInitializer cannot be resolved to a type据我理解,这是一个依赖问题。

While I feel comfortable writing Java code, this is my firs Application using mavenand spring-bootnaturally I'm clueless.

虽然我觉得编写 Java 代码很舒服,但这是我第一个使用的应用程序mavenspring-boot自然而然我一无所知。

pom.xml:

pom.xml:

<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>

    <artifactId>univers-web</artifactId>
    <packaging>war</packaging>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.3.6.RELEASE</version>
    </parent>

    <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>
        </dependency>
        <dependency>
            <groupId>com.vaadin</groupId>
            <artifactId>vaadin-spring-boot-starter</artifactId>
            <version>2.0.1</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <executable>true</executable>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <configuration>
                    <failOnMissingWebXml>false</failOnMissingWebXml>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

SpringBootApplication.java:

SpringBootApplication.java:

package com.thebyteguru.launcher;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.context.web.SpringBootServletInitializer;

public class SpringBootApplication extends SpringBootServletInitializer {

    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(SpringBootApplication.class);
    }

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

}

I can see that the relevant jarfiles are present in the Maven Dependenciesfolder, and while import'ing the needed class'es I noticed that the package'es are there but they are "empty"(meaning intellisense finds the packages but not the classes inside them).

我可以看到jar文件Maven Dependencies夹中存在相关文件,并且在查找import所需class的 es 时,我注意到packagees 在那里但它们是“空的”(意味着智能感知找到了包,但没有找到其中的类)。

What am I missing?

我错过了什么?

回答by Ajoe

I had the same issue.My solution is

我有同样的问题。我的解决方案是

instead of

代替

import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;

use

利用

import org.springframework.boot.web.support.SpringBootServletInitializer;

Also in pom

也在 pom

<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.6.RELEASE</version>
</parent>

回答by afulz29

Don't do anything new just press Ctrl+Shift+oin your eclipse it will add correct import to your project

不要做任何新的东西只是按Ctrl+ Shift+o在Eclipse将正确导入添加到您的项目

回答by paulsm4

I encountered the same problem ... but I'm using Maven with Spring Boot 2.1.1.

我遇到了同样的问题……但我在 Spring Boot 2.1.1 中使用了 Maven。

So I needed to specify the correct parent ... ANDchange the import/class name:

所以我需要指定正确的父级......更改导入/类名称:

pom.xml:

pom.xml:

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.1.1.RELEASE</version>
</parent>

MyApp.java:

我的应用程序.java:

...
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
// import org.springframework.boot.web.support.SpringBootServletInitializer;  // OBSOLETE
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;

@SpringBootApplication
public class SpringBootWebApplication extends SpringBootServletInitializer {

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(SpringBootWebApplication.class);
    }

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

回答by angel molina

I'm following the same course and I just set the pom like this:

我遵循相同的课程,我只是像这样设置 pom:

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.5.6.RELEASE</version>
</parent>

And works fine

并且工作正常