启动Jasper报表时触发licenseReportCounter()异常求助

问题描述 #

启动Jasper报表时触发licenseReportCounter()异常，已确认Jasper许可证有效且未过期，部署在WebLogic服务器上，尝试停止所有后端进程并重启服务器后问题仍未解决，前端无法获取报表。

异常堆栈信息 #

Caused by: org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'heartbeatTrigger' defined in
ServletContext resource [/WEB-INF/applicationContext-logging.xml]:
Cannot resolve reference to bean 'heartbeatJob' while setting bean
property 'jobDetail'; nested exception is
org.springframework.beans.factory.BeanCreationException: Error
creating bean with name 'heartbeatJob' defined in ServletContext
resource [/WEB-INF/applicationContext-logging.xml]: Cannot resolve
reference to bean 'heartbeatBean' while setting bean property
'targetObject'; nested exception is
org.springframework.beans.factory.BeanCreationException: Error
creating bean with name 'heartbeatBean' defined in ServletContext
resource [/WEB-INF/applicationContext-logging.xml]: Cannot resolve
reference to bean 'heartbeatProContributor' while setting bean
property 'contributor'; nested exception is
org.springframework.beans.factory.BeanCreationException: Error
creating bean with name 'heartbeatProContributor' defined in
ServletContext resource [/WEB-INF/applicationContext-logging-pro.xml]:
Cannot resolve reference to bean 'licenseReportCounter' while setting
bean property 'licenseReportCounter'; nested exception is
org.springframework.beans.factory.BeanCreationException: Error
creating bean with name 'licenseReportCounter' defined in class path
resource
[com/jaspersoft/ji/license/ApplicationContextLicenseConfiguration.class]:
Instantiation of bean failed; nested exception is
org.springframework.beans.factory.BeanDefinitionStoreException:
Factory method [public com.jaspersoft.ji.license.LicenseReportCounter
com.jaspersoft.ji.license.ApplicationContextLicenseConfiguration.licenseReportCounter()]
threw exception; nested exception is java.lang.NumberFormatException:
For input string: "" at
org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:328

问题分析 #

从异常堆栈最底层的java.lang.NumberFormatException: For input string: ""可以明确：某个需要数字类型的配置项被设置为空字符串，导致licenseReportCounter bean实例化失败，进而引发一系列Spring依赖bean的创建异常。

处理步骤 #

• 排查Jasper许可证相关配置文件（如license.properties、Spring配置文件中关联的许可证参数），确认所有数值型配置项（如报表计数阈值、许可证并发数限制等）均有合法数字值，无空字符串配置
• 检查WebLogic服务器的系统环境变量、域级配置参数，确认Jasper依赖的数值型变量未被设置为空
• 验证许可证文件内容，确保文件中的数字字段格式正确，无空值或非法字符
• 清理WebLogic服务器临时缓存：删除${DOMAIN_HOME}/servers/[你的服务器名称]/tmp和${DOMAIN_HOME}/servers/[你的服务器名称]/cache目录下的全部内容，再重新启动服务器
• 若上述操作无效，检查Jasper部署包的完整性，必要时重新部署官方提供的应用包

内容的提问来源于stack exchange，提问作者James S