运行 IntelliJ 中的 OptaPlanner 示例

Question

为了 运行 IntelliJ 中的 OptaPlanner 示例，我遵循了 "ReadMeOptaPlanner" in "\optaplanner-distribution-7.23.0.Final" 中的指南：

1. 在 IntelliJ 中将 "pom.xml" 作为项目打开
2. 编辑运行配置。

尽管如此，我不得不手动更改源版本和目标版本以避免错误：

• 文件 -> 设置 -> 构建、执行、开发 -> 编译器 -> Java 编译器 -> 每个模块字节码版本 -> 目标字节码版本 -> 1.8
• 文件 -> 项目结构 -> 模块 -> 来源 -> 语言级别 -> 8

但是现在我在构建代码时遇到了 100 个错误，例如：

Error:(24, 62) java: package org.optaplanner.persistence.common.api.domain.solution does not exist Error:(25, 64) java: package org.optaplanner.persistence.xstream.impl.domain.solution does not exist Error:(53, 12) java: cannot find symbol symbol: class SolutionFileIO location: class org.optaplanner.examples.investment.app.InvestmentApp

或

Error:(24, 48) java: package org.optaplanner.core.api.domain.solution does not exist Error:(25, 39) java: package org.optaplanner.core.api.solver does not exist Error:(26, 39) java: package org.optaplanner.core.api.solver does not exist Error:(32, 62) java: package org.optaplanner.persistence.common.api.domain.solution does not exist Error:(33, 34) java: package org.optaplanner.swing.impl does not exist Error:(34, 34) java: package org.optaplanner.swing.impl does not exist Error:(133, 15) java: cannot find symbol symbol: class Solver location: class org.optaplanner.examples.common.app.CommonApp Error:(149, 21) java: cannot find symbol symbol: class SolutionFileIO location: class org.optaplanner.examples.common.app.CommonApp Information:java: Some input files use unchecked or unsafe operations. Information:java: Recompile with -Xlint:unchecked for details.

或

Error:(23, 44) java: package com.thoughtworks.xstream.annotations does not exist Error:(24, 44) java: package com.thoughtworks.xstream.annotations does not exist Error:(25, 48) java: package org.optaplanner.core.api.domain.solution does not exist Error:(26, 48) java: package org.optaplanner.core.api.domain.solution does not exist Error:(27, 48) java: package org.optaplanner.core.api.domain.solution does not exist Error:(28, 55) java: package org.optaplanner.core.api.domain.solution.drools does not exist Error:(29, 55) java: package org.optaplanner.core.api.domain.solution.drools does not exist Error:(30, 50) java: package org.optaplanner.core.api.domain.valuerange does not exist Error:(31, 50) java: package org.optaplanner.core.api.domain.valuerange does not exist Error:(32, 50) java: package org.optaplanner.core.api.domain.valuerange does not exist Error:(33, 59) java: package org.optaplanner.core.api.score.buildin.hardsoftlong does not exist Error:(36, 74) java: package org.optaplanner.persistence.xstream.api.score.buildin.hardsoftlong does not exist Error:(38, 2) java: cannot find symbol symbol: class PlanningSolution Error:(39, 2) java: cannot find symbol symbol: class XStreamAlias Error:(50, 13) java: cannot find symbol symbol: class HardSoftLongScore location: class org.optaplanner.examples.investment.domain.InvestmentSolution Error:(98, 12) java: cannot find symbol symbol: class HardSoftLongScore location: class org.optaplanner.examples.investment.domain.InvestmentSolution Error:(102, 26) java: cannot find symbol symbol: class HardSoftLongScore location: class org.optaplanner.examples.investment.domain.InvestmentSolution Error:(111, 12) java: cannot find symbol symbol: class CountableValueRange location: class org.optaplanner.examples.investment.domain.InvestmentSolution

不幸的是 OptaPlanner User Guide 只说：

Open the file examples/sources/pom.xml as a new project, the maven integration will take care of the rest.

谢谢！

• Java: 1.8
• IDE: IntelliJ IDE社区版 2019.1.3 x64
• OptaPlanner: 7.23.0
• OS：微软Windows 10 企业

Answer 1

在 Intellij 中，在 "Maven Projects" 端 window，检查您的设置：

然后按这 3 个按钮：

Answer 2

我公司的Proxy出了点问题，所以Maven无法在IntelliJ里面下载需要的文件。不幸的是它没有显示消息。

手动安装和 运行 Maven（在 IntelliJ 之外）并更改其代理设置，然后使用 IntelliJ 作为我的 IDE 现在工作。 感谢您的帮助。