mvn 弹簧启动：运行不启动弹簧

java spring spring-mvc spring-boot

2022-09-01 16:05:23

答：我将版本标签从0.0.1-SNAPSHOT更改为1.0.2.RELEASE，并且它有效，请参阅下面的答案。

我正在按照本文档进行操作，并按照说明创建了示例.java。当我运行弹簧不开始时，它只是说建立成功。我的理解是，春天应该开始，雄猫提供页面。mvn spring-boot:run

E:\workspace\SpringBoot>mvn spring-boot:run
[INFO] Scanning for projects...
[INFO]
[INFO] Using the builder org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder with a thread count of 1
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building myproject 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] >>> spring-boot-maven-plugin:1.1.0.BUILD-SNAPSHOT:run (default-cli) @ myproject >>>
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ myproject ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory E:\workspace\SpringBoot\src\main\resources
[INFO] skip non existing resourceDirectory E:\workspace\SpringBoot\src\main\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ myproject ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ myproject ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory E:\workspace\SpringBoot\src\test\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ myproject ---
[INFO] No sources to compile
[INFO]
[INFO] <<< spring-boot-maven-plugin:1.1.0.BUILD-SNAPSHOT:run (default-cli) @ myproject <<<
[INFO]
[INFO] --- spring-boot-maven-plugin:1.1.0.BUILD-SNAPSHOT:run (default-cli) @ myproject ---
[INFO] Attaching agents: []
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.108 s
[INFO] Finished at: 2014-05-01T14:54:26-05:00
[INFO] Final Memory: 16M/232M
[INFO] ------------------------------------------------------------------------

以下是一些详细信息：

E:\workspace\SpringBoot>java -version
java version "1.7.0_21"
Java(TM) SE Runtime Environment (build 1.7.0_21-b11)
Java HotSpot(TM) 64-Bit Server VM (build 23.21-b01, mixed mode)

E:\workspace\SpringBoot>mvn -v
Apache Maven 3.2.1 (ea8b2b07643dbb1b84b6d16e1f08391b666bc1e9; 2014-02-14T12:37:52-05:00)
Maven home: E:\apps\apache-maven-3.2.1\bin\..
Java version: 1.7.0_21, vendor: Oracle Corporation
Java home: C:\Program Files\Java\jdk1.7.0_21\jre
Default locale: en_US, platform encoding: Cp1252
OS name: "windows 7", version: "6.1", arch: "amd64", family: "windows"

示例.java位于 E：\workspace\SpringBoot\src\main\java：

import org.springframework.boot.*;
import org.springframework.boot.autoconfigure.*;
import org.springframework.stereotype.*;
import org.springframework.web.bind.annotation.*;

@RestController
@EnableAutoConfiguration
public class Example {

    @RequestMapping("/")
    String home() {
        return "Hello World!";
    }

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

}

pom.xml位于 E：\workspace\SpringBoot：

<?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>myproject</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.1.0.BUILD-SNAPSHOT</version>
    </parent>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>   

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

    <!-- (you don't need this if you are using a .RELEASE version) -->
    <repositories>
        <repository>
            <id>spring-snapshots</id>
            <url>http://repo.spring.io/snapshot</url>
            <snapshots><enabled>true</enabled></snapshots>
        </repository>
        <repository>
            <id>spring-milestones</id>
            <url>http://repo.spring.io/milestone</url>
        </repository>
    </repositories>
    <pluginRepositories>
        <pluginRepository>
            <id>spring-snapshots</id>
            <url>http://repo.spring.io/snapshot</url>
        </pluginRepository>
        <pluginRepository>
            <id>spring-milestones</id>
            <url>http://repo.spring.io/milestone</url>
        </pluginRepository>
    </pluginRepositories>

</project>

答案 1

尝试使用spring-boot 1.0.2.RELEASE。“运行”mojo 在 1.1.0 快照中发生了变化，你可能遇到了特定于 Windows 的问题（看起来可能是应用正在运行，但你没有看到控制台输出）。

更新：该错误现已修复，因此它也应该在1.1.0上运行。

答案 2

你的pom缺少Spring Boot Maven插件：

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
</build>