记录开发小知识-java后台

后台Control接受前端传来的数组时，需要添加注解才能接收到。

@RequestMapping(value = "/testJava", produces = "text/html;charset=UTF-8") @ResponseBody private String testJava(HttpServletRequest request, HttpServletResponse response, @RequestParam(value = "exportArr[]") String[] exportArr) throws ServletException, IOException { return JsonUtils.toJson(""); }

控制台打印用log4j,不要用syso,syse

logger.info("####################打印例子);