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                # `M2_REPO` – 在 Eclipse 中更改 Maven 倉庫的位置 > 原文: [https://howtodoinjava.com/maven/maven-m2-repo-eclipse/](https://howtodoinjava.com/maven/maven-m2-repo-eclipse/) 可以從 Eclipse IDE 中讀取 Maven 依賴項,該 Maven 通過`M2_REPO`類路徑變量公開。 `m2_repo`指向工作區中 maven 的[本地倉庫](https://howtodoinjava.com/maven/change-local-repository-location/ "How to change maven local repository path in windows")位置。 在使用 maven 的依賴項之前,必須在構建路徑上將`m2_repo`類變量添加到 eclipse 的類路徑變量中。 ## 1\. 在 Eclipse 中手動更改 Maven 倉庫位置 #### 1.1 導航到“窗口 > 首選項” ![eclipse-preferences](https://img.kancloud.cn/73/f4/73f4ba97212849058768ce34f88e1125_275x358.png) #### 1.2 導航到“Java > 構建路徑 > Classpath 變量” ![classpath_variables_for_projects](https://img.kancloud.cn/98/aa/98aa2d2ba882acd4392309fafbec9877_917x462.png) #### 1.3 定義新的類路徑變量`M2_REPO` 創建新變量`M2_REPO`并將其指向 Maven 本地倉庫位置。 ![add_maven_repository](https://img.kancloud.cn/4c/69/4c69b24b7a57bd0a06dd4a7ff6866646_912x456.png) #### 1.4 確認已添加變量 ![m2_repo_variable_added](https://img.kancloud.cn/4d/68/4d68647f6a74be17c0cd275514226555_674x128.png) ## 2\. 從命令行 – `eclipse:configure-workspace`更新`M2_REPO` 或者,您可以通過 Maven 命令`"eclipse:configure-workspace"`定義并添加`M2_REPO`。 例如,這是我系統中命令的輸出。 ```java Microsoft Windows [Version 10.0.17134.228] (c) 2018 Microsoft Corporation. All rights reserved. C:\Users\Lokesh>mvn -Declipse.workspace="E:\devsetup\workspace" eclipse:configure-workspace [INFO] Scanning for projects... [INFO] [INFO] ------------------< org.apache.maven:standalone-pom >------------------- [INFO] Building Maven Stub Project (No POM) 1 [INFO] --------------------------------[ pom ]--------------------------------- [INFO] [INFO] --- maven-eclipse-plugin:2.10:configure-workspace (default-cli) @ standalone-pom --- [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESS [INFO] ------------------------------------------------------------------------ [INFO] Total time: 0.815 s [INFO] Finished at: 2018-09-09T14:50:20+05:30 [INFO] ------------------------------------------------------------------------ ``` ![Add m2_repo from command prompt](https://img.kancloud.cn/3f/4a/3f4a22af6a5d49ed05c8565d133cf567_780x392.png) 從命令行添加`m2_repo` 學習愉快!
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