Building log4j

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文章标签：

#log4j #junit #windows #maven #encoding #java

本文记录了在本地重新构建log4j 1.2.16版本过程中遇到的错误及解决方案，包括调整Maven版本和环境变量设置。

想要查看log4j的源码。因此下载了最新的apache-log4j-1.2.16来看看。

光看还不过瘾，要本机重新打包玩玩。

把构建过程中遇到的错误记录如下：

0.maven版本：
mvn -v
Apache Maven 3.0.4 (r1232337; 2012-01-17 16:44:56+0800)
Maven home: E:\worksofts\apache-maven-3.0.4
Java version: 1.6.0_05, vendor: Sun Microsystems Inc.
Java home: E:\worksofts\bea\jdk160_05\jre
Default locale: zh_CN, platform encoding: GBK
OS name: "windows vista", version: "6.1", arch: "x86", family: "windows"

最开始构建有错误，但是提示不清楚，因此加参数：mvn install -e -X

1.发现错误如下：
[ERROR]
[ERROR] The project log4j:log4j:1.2.16 (D:\eclipse\myprojects\apache-log4j-1.2
.16\pom.xml) has 1 error
[ERROR] 'build.plugins.plugin[org.apache.maven.plugins:maven-antrun-plugin].
dependencies.dependency.scope' for junit:junit:jar must be one of [compile, runt
ime, system] but is 'test'. @ line 303, column 20
[ERROR]
[ERROR]
[ERROR] For more information about the errors and possible solutions, please rea
d the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/ProjectBuildin
gException

估计应该不是pom.xml的问题，因此考虑换mvn版本试试。更换为 2.2.1

2.更换版本
mvn -v
Apache Maven 2.2.1 (r801777; 2009-08-07 03:16:01+0800)
Java version: 1.6.0_05
Java home: E:\worksofts\bea\jdk160_05\jre
Default locale: zh_CN, platform encoding: GBK
OS name: "windows vista" version: "6.1" arch: "x86" Family: "windows"

再次构建，出现如下错误：
Caused by: org.apache.maven.reporting.MavenReportException:
Exit code: 1 - java.lang.IllegalArgumentException
        at sun.net.www.ParseUtil.decode(ParseUtil.java:189)
        at sun.misc.URLClassPath$FileLoader.<init>(URLClassPath.java:953)
        at sun.misc.URLClassPath$3.run(URLClassPath.java:326)
        at java.security.AccessController.doPrivileged(Native Method)
        at sun.misc.URLClassPath.getLoader(URLClassPath.java:320)
        at sun.misc.URLClassPath.getLoader(URLClassPath.java:297)
        at sun.misc.URLClassPath.findResource(URLClassPath.java:144)
        at java.net.URLClassLoader$2.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findResource(URLClassLoader.java:359)
        at java.lang.ClassLoader.getResource(ClassLoader.java:977)
        at java.lang.ClassLoader.getResourceAsStream(ClassLoader.java:1159)
        at javax.xml.parsers.SecuritySupport$4.run(SecuritySupport.java:96)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.xml.parsers.SecuritySupport.getResourceAsStream(SecuritySupport
.java:89)......

3.发现mvn的环境变量设置可能出现错误。重置环境变量。
        set CLASSPATH=
        再次构建：
        [INFO] Writing OBR metadata
        [INFO] ------------------------------------------------------------------------
        [INFO] BUILD SUCCESSFUL
        [INFO] ------------------------------------------------------------------------
        [INFO] Total time: 1 minute 43 seconds
        [INFO] Finished at: Thu Mar 15 22:53:35 CST 2012
        [INFO] Final Memory: 31M/57M
        [INFO] ------------------------------------------------------------------------

终于看到了BUILD SUCCESSFUL ！