`
文章列表
java.lang.IllegalStateException: Argument [RedirectAttributes] is of type Model or Map but is not assignable from the actual model. You may need to switch newer MVC infrastructure classes to use this argument. at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.resolveHandlerArgu ...
请求路径上有个id的变量值,可以通过@PathVariable来获取 [java] view plaincopyprint? @RequestMapping(value = "/page/{id}", method = RequestMethod.GET)  @RequestParam用来获得静态的URL请求入参 spring注解时action里用到。
多对多,多对一,一对多关联时: 要插入数据,有外键时先检查外键关联的表是否有记录,如果没有,则外键列不要插入任何数据。 org.hibernate.ObjectNotFoundException: No row with the given identifier exists: [com.ambow.lmsx.enrollment.entity.EnrClass#1 ...
Global site tag (gtag.js) - Google Analytics