當引用庫中的類擴展時，構建失敗

我正在使用maven構建我的java項目。我已經添加了一個log4j jar作爲依賴項，並嘗試使用extend的RollingFileAppender類。我試圖再次構建它，並出人意料地發生錯誤。從引用的庫/罐禁止擴展類嗎？

下面是行家說錯誤：

[INFO] ------------------------------------------------------------- 
[ERROR] COMPILATION ERROR : 
[INFO] ------------------------------------------------------------- 
[ERROR] bootstrap class path not set in conjunction with -source 1.6 
c:\Users\jlim\Desktop\workspace\test-joven\src\main\java\com\joven\test\CustomRollingFileAppender.java:[3,23] error: package org.apache.log4j does not exist 
[ERROR] c:\Users\jlim\Desktop\workspace\test-joven\src\main\java\com\joven\test\CustomRollingFileAppender.java:[5,47] error: cannot find symbol 
[INFO] 2 errors 
[INFO] ------------------------------------------------------------- 
[INFO] ------------------------------------------------------------------------ 
[INFO] BUILD FAILURE 
[INFO] ------------------------------------------------------------------------ 
[INFO] Total time: 1.045s 
[INFO] Finished at: Mon May 20 15:56:14 CST 2013 
[INFO] Final Memory: 12M/152M 
[INFO] ------------------------------------------------------------------------ 
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.5.1:compile (default-compile) on project test-joven: Compilation failure: Compilation failure: 
[ERROR] bootstrap class path not set in conjunction with -source 1.6 
[ERROR] c:\Users\jlim\Desktop\workspace\test-joven\src\main\java\com\joven\test\CustomRollingFileAppender.java:[3,23] error: package org.apache.log4j does not exist 
[ERROR] c:\Users\jlim\Desktop\workspace\test-joven\src\main\java\com\joven\test\CustomRollingFileAppender.java:[5,47] error: cannot find symbol 
[ERROR] -> [Help 1] 
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch. 
[ERROR] Re-run Maven using the -X switch to enable full debug logging. 
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:

下面是我的pom.xml的依賴塊：

<dependency> 
      <groupId>log4j</groupId> 
      <artifactId>log4j</artifactId> 
      <version>1.2.15</version> 
      <exclusions> 
       <exclusion> 
        <groupId>javax.mail</groupId> 
        <artifactId>mail</artifactId> 
       </exclusion> 
       <exclusion> 
        <groupId>javax.jms</groupId> 
        <artifactId>jms</artifactId> 
       </exclusion> 
       <exclusion> 
        <groupId>com.sun.jdmk</groupId> 
        <artifactId>jmxtools</artifactId> 
       </exclusion> 
       <exclusion> 
        <groupId>com.sun.jmx</groupId> 
        <artifactId>jmxri</artifactId> 
       </exclusion> 
      </exclusions> 
      <scope>runtime</scope> 
     </dependency> 
    </dependencies>

謝謝！

來源

2013-05-20 Oneb

請顯示您的pom文件，因爲我假設您使用範圍測試添加了依賴項。 – khmarbaise

好的，稍等片刻我會編輯我的帖子。 – Oneb

的log4j的範圍runtime：

<scope>runtime</scope>

所以它只能在運行時，而不是在編譯時間。將其更改爲compile（或將其刪除，因爲編譯是默認設置）

來源

2013-05-20 08:22:02

多謝先生。 – Oneb

當引用庫中的類擴展時，構建失敗

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