Java 包org.springframework.boot不存在_Java_Spring_Maven_Spring Boot

Java 包org.springframework.boot不存在

java spring maven spring-boot

Java 包org.springframework.boot不存在,java,spring,maven,spring-boot,Java,Spring,Maven,Spring Boot,我试图在我的机器上运行一个小的基本Spring引导程序，当我在maven上运行clean compile（甚至在尝试Spring引导之前：运行）时，我得到以下错误： [INFO] ------------------------------------------------------------- [ERROR] COMPILATION ERROR : [INFO] -------------------------------------------------------------

我试图在我的机器上运行一个小的基本Spring引导程序，当我在maven上运行

clean compile

（甚至在尝试Spring引导之前：运行）时，我得到以下错误：

[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR : 
[INFO] -------------------------------------------------------------
[ERROR] /C:/Users/hbenayed/eclipse-workspace/SpringBootPoc/src/main/java/com/benayed/spboot/poc/SpringBootPoc/SpringBootPocApplication.java:[3,32] package org.springframework.boot does not exist
[ERROR] /C:/Users/hbenayed/eclipse-workspace/SpringBootPoc/src/main/java/com/benayed/spboot/poc/SpringBootPoc/SpringBootPocApplication.java:[4,46] package org.springframework.boot.autoconfigure does not exist
[ERROR] /C:/Users/hbenayed/eclipse-workspace/SpringBootPoc/src/main/java/com/benayed/spboot/poc/SpringBootPoc/SpringBootPocApplication.java:[6,2] cannot find symbol
  symbol: class SpringBootApplication
[ERROR] /C:/Users/hbenayed/eclipse-workspace/SpringBootPoc/src/main/java/com/benayed/spboot/poc/SpringBootPoc/SpringBootPocApplication.java:[10,17] cannot find symbol
  symbol:   variable SpringApplication
  location: class com.benayed.spboot.poc.SpringBootPoc.SpringBootPocApplication
[INFO] 4 errors 
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 14.807 s
[INFO] Finished at: 2018-02-18T03:28:24+01:00
[INFO] Final Memory: 19M/167M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project SpringBootPoc: Compilation failure: Compilation failure:
[ERROR] /C:/Users/hbenayed/eclipse-workspace/SpringBootPoc/src/main/java/com/benayed/spboot/poc/SpringBootPoc/SpringBootPocApplication.java:[3,32] package org.springframework.boot does not exist
[ERROR] /C:/Users/hbenayed/eclipse-workspace/SpringBootPoc/src/main/java/com/benayed/spboot/poc/SpringBootPoc/SpringBootPocApplication.java:[4,46] package org.springframework.boot.autoconfigure does not exist
[ERROR] /C:/Users/hbenayed/eclipse-workspace/SpringBootPoc/src/main/java/com/benayed/spboot/poc/SpringBootPoc/SpringBootPocApplication.java:[6,2] cannot find symbol
[ERROR] symbol: class SpringBootApplication
[ERROR] /C:/Users/hbenayed/eclipse-workspace/SpringBootPoc/src/main/java/com/benayed/spboot/poc/SpringBootPoc/SpringBootPocApplication.java:[10,17] cannot find symbol
[ERROR] symbol:   variable SpringApplication
[ERROR] location: class com.benayed.spboot.poc.SpringBootPoc.SpringBootPocApplication
[ERROR] -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project SpringBootPoc: Compilation failure
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:212)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:199)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: org.apache.maven.plugin.compiler.CompilationFailureException: Compilation failure
    at org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:858)
    at org.apache.maven.plugin.compiler.CompilerMojo.execute(CompilerMojo.java:129)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207)
    ... 20 more
[ERROR] 
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException

以下是我的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>

    <groupId>com.benayed.spboot.poc</groupId>
    <artifactId>SpringBootPoc</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

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

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.10.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-data-jpa</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>

我尝试了许多在互联网上可以找到的解决方案，比如删除.m2存储库，在

springbootmaven插件中添加不同的标签（version，fork，…），我很肯定，这就是导致问题的部分
有什么建议吗？
您有0个编译依赖项，只定义了测试编译依赖项，因为您已经注释掉了spring boot starter数据jpa
。SpringStarter拉入其他依赖项（包括其他启动器），以在编译时创建所需的一切。取消对springbootstarter数据jpa
依赖项的注释，和/或重新评估实际需要的依赖项
 您需要添加此依赖项
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>


org.springframework.boot
SpringBootStarterWeb

然后它就会工作。
在依赖关系管理之外添加下面的部分，并对项目进行更新。然后是maven的干净安装
<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.10.RELEASE</version>
    </parent>


org.springframework.boot
1）关闭项目
2） 再次导入项目，并选中“自动导入”
这对我有用。可能也适用于您。
此问题将使用
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>
 


org.springframework.boot
SpringBootStarterWeb

如果这仍然不起作用，请运行“maven clean install”这已经起作用了！除了Do Nhu Vy的答案之外，我还有一个问题：为什么我需要添加这种依赖性？由于我在pom中包含一个父项，这意味着我需要的所有依赖项都是从该父项检索的，所以为什么我必须添加另一个依赖项才能编译我的项目？父pom用于管理依赖项，它们都是可选的，因此您需要显式地定义它们。这很有效！除了Darren Forsythe的回答之外，我还有一个问题：为什么我需要添加这种依赖性？因为我在pom中包含了一个父项，这意味着我需要的所有依赖项都是从该父项检索的，所以为什么我必须添加另一个依赖项才能编译我的项目？如果父项声明了依赖项，这是继承的，那就对了。但是，Spring启动父级只声明DependencyManager，它将只管理版本和范围，但依赖项本身不会添加到子项目中。
<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

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