[英]NoClassDefFoundError: org/apache/commons/configuration/ConfigurationException
[英]Apache Commons Configuration: ClassNotFoundException: org.apache.commons.beanutils.DynaBean
我的 POM 包含:
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-configuration2</artifactId>
<version>2.3</version>
</dependency>
快速入門指南讀取屬性文件中的兩個示例代碼:
Configurations configs = new Configurations();
try
{
Configuration config = configs.properties(new File("config.properties"));
// access configuration properties
...
}
catch (ConfigurationException cex)
{
// Something went wrong
}
和屬性文件,使用 PropertiesConfiguration :
Parameters params = new Parameters();
FileBasedConfigurationBuilder<FileBasedConfiguration> builder =
new FileBasedConfigurationBuilder<FileBasedConfiguration>(PropertiesConfiguration.class)
.configure(params.properties()
.setFileName("usergui.properties"));
try
{
Configuration config = builder.getConfiguration();
...
}
catch(ConfigurationException cex)
{
// loading of the configuration file failed
}
拋出:
java.lang.NoClassDefFoundError: org/apache/commons/beanutils/DynaBean
...
at org.apache.commons.configuration2.builder.fluent.Parameters.createParametersProxy(Parameters.java:307)
at org.apache.commons.configuration2.builder.fluent.Parameters.fileBased(Parameters.java:186)
at properties.PropertiesTest.testLoadAndStoreWithCommonsConfiguration(PropertiesTest.java:52)
...
Caused by: java.lang.ClassNotFoundException: org.apache.commons.beanutils.DynaBean
mvn dependency:tree
顯示:
...
[INFO] +- org.apache.commons:commons-configuration2:jar:2.2:compile
[INFO] | +- org.apache.commons:commons-lang3:jar:3.6:compile
[INFO] | \- commons-logging:commons-logging:jar:1.2:compile
...
commons-configuration2
的 POM包含:
...
<dependency>
<groupId>commons-beanutils</groupId>
<artifactId>commons-beanutils</artifactId>
<version>1.9.3</version>
<optional>true</optional><
/dependency>
...
我將以下依賴項添加到我的 POM 中並且它起作用了:
<dependency>
<groupId>commons-beanutils</groupId>
<artifactId>commons-beanutils</artifactId>
<version>1.9.3</version>
</dependency>
<dependency>
<groupId>commons-beanutils</groupId>
<artifactId>commons-beanutils</artifactId>
<version>1.9.4</version>
</dependency>
在pom.xml
添加代碼后,我發現它不起作用。
我下載了 jar,將其放入Web-INF
下的lib
內容中,然后它就可以工作了。
我認為Maven的插件日志導致它死亡,它無法自動更新或刪除jar。
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