我对此有很多关于stackoverflow的问题。但是，我仍然无法知道我构建项目的方式是什么问题。
我有两个春季启动项目：we-data和we-web。 we-web依赖于we-data。我们数据在Maven上编译良好。但是我们网络给了我以上错误。
我们数据pom：
<?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.we</groupId>
<artifactId>data</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>we-data</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.2.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>
we-web pom：
<?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.we</groupId>
<artifactId>web</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>we-web</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.2.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-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.we</groupId>
<artifactId>data</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>
每当我在我们的网站上执行“清除编译软件包安装”目标时，都会收到maven错误。找不到此抱怨的所有符号都在we-data项目中。由于某种原因，它说无法在we-web中找到所有的we-data类。但是，当我将应用程序作为spring boot应用程序运行时，一切都很好。没有Maven错误与此有关：
[INFO] ------------------------------------------------------------------------
[INFO] Building we-web 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.6.1:clean (default-clean) @ web ---
[INFO] Deleting C:\Users\user\Documents\GitHub\we\we-web\target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ web ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ web ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 10 source files to C:\Users\user\Documents\GitHub\we\we-web\target\classes
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] /C:/Users/user/Documents/GitHub/we/we-web/src/main/java/com/we/controller/EmployeeController.java:[13,25] package com.we.service does not exist
[ERROR] /C:/Users/user/Documents/GitHub/we/we-web/src/main/java/com/we/controller/EmployeePaymentController.java:[22,9] cannot find symbol
symbol: class EmployeeService
location: class com.we.controller.EmployeePaymentController
.
.
.
[INFO] 44 errors
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.322 s
[INFO] Finished at: 2016-12-26T15:30:54+05:30
[INFO] Final Memory: 26M/253M
[INFO] ------------------------------------------------------------------------
[WARNING] The requested profile "pom.xml" could not be activated because it does not exist.
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project web: Compilation failure: Compilation failure:
.
.
我有STS正在使用的1.8 JDK。而且我也没有将we-data项目放在we-web的构建路径上。我希望这能通过，因为我想对此发动战争。请帮忙。我在we-data上执行“干净的编译程序包安装”，然后在we-web上执行它。 “更新Maven项目”也没有帮助我。
最佳答案
我也被这个问题困扰了一天，终于找到了我所做的根本原因和解决方案：
如果您的pom上有以下几行（因为您的情况是我们数据的pom）
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
您应该删除这些行并将其更改为：
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
</plugin>
从M. Deinum那里得到线索后，我发现他对编译的jar是正确的，如果您使用
spring-boot-maven-plugin则不是普通的jar，无论如何还是要感谢线索。并且还请检查以下问题：Dependency not found in Spring Boot project
我试着用这个：
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
<configuration>
<classifier>exec</classifier>
</configuration>
</execution>
</executions>
</plugin>
它就像一个魅力。
关于maven - Maven中的“找不到符号”错误，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/41329851/