Could not initialize class net.sf.json.JsonConfig错误解决

调用JSONArray.fromObject()方法时，出现Could not initialize class net.sf.json.JsonConfig错误。解决方法如下： 
commons-lang 2.4 
commons-beanutils 1.7.0 
commons-collections 3.2 
commons-logging 1.1.1 

ezmorph 1.0.6 

出现 Could not initialize class  net.sf.json.util.JSONUtils 错误的话，可能是缺少以上jar包中的一个 .

对于maven工程，引入pom文件如下（涉及6个jar包）：

<dependency>        <groupId>net.sf.json-lib</groupId>        <artifactId>json-lib</artifactId>        <version>2.4</version>        <classifier>jdk15</classifier>    </dependency> <dependency>    <groupId>org.apache.commons</groupId>    <artifactId>commons-lang3</artifactId>    <version>3.4</version></dependency><dependency>    <groupId>net.sf.ezmorph</groupId>    <artifactId>ezmorph</artifactId>    <version>1.0.6</version></dependency><dependency>    <groupId>commons-logging</groupId>    <artifactId>commons-logging</artifactId>    <version>1.1.1</version></dependency><dependency>    <groupId>commons-collections</groupId>    <artifactId>commons-collections</artifactId>    <version>3.2.1</version></dependency><dependency>    <groupId>commons-beanutils</groupId>    <artifactId>commons-beanutils</artifactId>    <version>1.8.0</version></dependency>