在 STS 中，引用其他我自己的简单 maven 项目不起作用，我缺少什么？

Question

我有一个非常简单的问题，我有一个 spring 启动启动项目，只有一个 class 并且我在另一个 spring 启动启动项目中引用它，但是越来越错误为：

[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  1.590 s
[INFO] Finished at: 2021-02-13T10:25:21-05:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project demo1: Compilation failure: Compilation failure: 
[ERROR] /Users/kedarmoghe/Documents/workspaces/travel/demo1/src/main/java/com/example1/demo/AddressProcessor.java:[3,24] package com.example.demo does not exist
[ERROR] /Users/kedarmoghe/Documents/workspaces/travel/demo1/src/main/java/com/example1/demo/AddressProcessor.java:[7,9] cannot find symbol
[ERROR]   symbol:   class Address
[ERROR]   location: class com.example1.demo.AddressProcessor
[ERROR] /Users/kedarmoghe/Documents/workspaces/travel/demo1/src/main/java/com/example1/demo/AddressProcessor.java:[7,31] cannot find symbol

我在项目 1 中的 pom.xml 是：

enter code here

<?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>2.4.2</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>11</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>
enter code here

我在项目 2 中的 pom.xml 是：

enter code here

<?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>2.4.2</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example1</groupId>
    <artifactId>demo1</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo1</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>11</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>
        <dependency>
            <groupId>com.example</groupId>
            <artifactId>demo</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>

    </dependencies>

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

</project>

enter code here

在我的 STS 中我无法编译，我缺少哪一步？

谢谢。

Answer 1

通过 Spring Boot Maven 插件打包的项目自然不适合用作依赖项。

您可以根据需要按照这些参考中的任何一个来编辑项目 1 的 pom.xml 以部署可以实际用作依赖项的工件 JAR，然后将其导入项目 2：

在 STS 中，引用其他我自己的简单 maven 项目不起作用，我缺少什么？

in STS, referring other my own simple maven project is not working, what I am missing?

spring-boot

maven

compilation

reference

project