寒沨的博客

spring

nested exception is org.springframework.core.NestedIOException: ASM ClassReader failed to parse class file - probably due to a new Java class file version that isn't supported yet:环境问题原因原因分析环境运行环境：JDK8， 编译环境：JDK7spring版本：3.2.4.RELEASE问题原因在抽象类的子类中使用 @c

HTTP Status 400 – Bad RequestType Status ReportDescription The server cannot or will not process the request due to something that is perceived to be a client error (e.g., malformed request syntax, in...

Type Exception ReportMessage Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.builder.BuilderException: Error invoking

Type Exception ReportMessage Request processing failed; nested exception is org.springframework.dao.DataIntegrityViolationException:Description The server encountered an unexpected condition that

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.dao.TransientDataAccessResourceException: ### Error updating database. Cause:

Type Exception ReportMessage Request processing failed; nested exception is java.lang.NullPointerExceptionDescription The server encountered an unexpected condition that prevented it from fulfilli

在控制台显示serviceimpl中定义的方法始终空指针错误，检查了很久。对于这个错误在service中少了@Autowired自动注入修改：浏览器报错：Type Exception ReportMessage Request processing failed; nested exception is java.lang.NullPointerExce

web项目导出Excel出现Java.lang.NoClassDefFoundError: org/apache/poi/hssf/usermodel/HSSFWorkbook异常的解决方法

eclipse中已经导入了Spring项目包，仍然报错：Exception in thread "main" java.lang.NoClassDefFoundError:org/apache/commons/logging/LogFactory原因缺少commons-xxxxxx.jar