weixin_45765705的博客

拦截器public class MyInterceptor implements HandlerInterceptor { @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { System.out.println("在controller之前"); ret

controller public String testSys() throws SysException { System.out.println("testSys执行了"); try{ int a = 1/0; }catch (Exception e){ e.printStackTrace(); throw new SysException("testSys出现错误");

springmvc 文件上传1. 传统方式上传2. springmvc 上传pox.xml引入坐标依赖 <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.1</version> </dependency&g