小编Dav*_*lez的帖子

我想列出存储在PKCS12密钥库中的证书.

密钥库具有扩展名 .pfx

我想用keytool程序将证书创建为PKCS12密钥库格式.

密钥库有扩展名.pfx.

我该如何实现这一目标？

如果我想检查变量是否为空或不存在,那么可靠的方法是什么？

有不同的例子:

if (null == yourvar)

if (typeof yourvar != 'undefined')

if (undefined != yourvar)

我想知道是否可以配置maven默认跳过单元测试.

I am deploying a J2EE web application in Websphere Application Server 8.5.

The web application has a shared library with all the third party libraries. All the internally coded libraries are inside the WEB-INF/lib folder.

The problem is that in only some jsps WAS it is throwing the following exception.

我认为它与xercesImpl-2.8.1.jar有关但我不明白为什么它会抛出这个异常以及它为什么只抛出一些页面.

在tomcat它完美地工作.

java.lang.ClassCastException: org.apache.xerces.jaxp.SAXParserFactoryImpl incompatible with javax.xml.parsers.SAXParserFactory
    at javax.xml.parsers.SAXParserFactory.newInstance(Unknown Source)
    at org.apache.taglibs.standard.tlv.JstlBaseTLV.validate(JstlBaseTLV.java:152)
    at org.apache.taglibs.standard.tlv.JstlCoreTLV.validate(JstlCoreTLV.java:96)
    at com.ibm.ws.jsp.translator.visitor.validator.ValidateVisitor.validateTagLib(ValidateVisitor.java:1129)
    at com.ibm.ws.jsp.translator.visitor.validator.ValidateVisitor.visitJspRootStart(ValidateVisitor.java:491)
    at com.ibm.ws.jsp.translator.visitor.JspVisitor.processJspElement(JspVisitor.java:233)
    at com.ibm.ws.jsp.translator.visitor.JspVisitor.visit(JspVisitor.java:216)
    at com.ibm.ws.jsp.translator.JspTranslator.processVisitors(JspTranslator.java:127)
    at com.ibm.ws.jsp.translator.utils.JspTranslatorUtil.translateJsp(JspTranslatorUtil.java:254)
    at com.ibm.ws.jsp.translator.utils.JspTranslatorUtil.translateJspAndCompile(JspTranslatorUtil.java:121)
    at com.ibm.ws.jsp.webcontainerext.AbstractJSPExtensionServletWrapper.translateJsp(AbstractJSPExtensionServletWrapper.java:535) …