spring+hibernate整合:报错信息如下 org.hibernate.HibernateException: No Session found for current thread at org.springframework.orm.hibernate4.SpringSessionContext.currentSession(SpringSessionContext.java:106) at org.hibernate.internal.SessionFactoryImpl.getC
tomcat maven插件启动报错tomcat-users.xml cannot be read [ERROR] Failed to execute goal org.codehaus.mojo:tomcat-maven-plugin:1.1:run (default-cli) on project metaDB: Could not start Tomcat: Memory database file D:\WORK\target\tomcat\conf\tomcat-users.xml c
创建了一个maven项目,报错 Errors occurred during the build. Errors running builder 'Maven Project Builder' on project 'BCPS'. Could not calculate build plan: Plugin org.apache.maven.plugins:maven-resources-plugin:2.6 or one of its dependencies could not be res
spring boot 启动遇到报错,具体如下 Description: Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured. Reason: Failed to determine a suitable driver class Action: Consider the following: If you want a
报错如下: Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not
Exception in thread "main" org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userServiceImpl': Unsatisfied dependency expressed through field 'dao'; nested exception is org.springframework.beans.fac
上图的报错信息相信大部分程序员都遇到过,奇怪的是虽然代码报错,但丝毫不影响程序的正常执行,也就是虽然编译器 IDEA 报错,但程序却能正常的执行,那这其中的原因又是为何? 报错原因分析 报错的原因首先是因为 IDEA 强大的报警机制,@Autowired 为 Spring 的注解,含义是将某类动态的注入到当前类中,如下图所示: @Autowired 默认是根据 type 进行注入,并且注入时要求(注入)对象不能为 NULL,默认值如下图所示: 而 IDEA 报错的原因是:@Autowired