MissingServletRequestParameterException: Required String parameter ‘XXXX‘ is not present

详细报错：

: Required String parameter 'XXXX' is not present
	at (:204)
	at (:114)
	at (:121)
	at (:167)
	at (:134)
	at (:105)
	at (:878)
	at (:792)
	at (:87)
	at (:1040)
	at (:943)
	at (:1006)
	at (:898)

分析问题：

参数缺失

解决问题：

方法1. @RequestParam ：required() default true;
	===> 设置@RequestParam(value = "XXX", required = false)

方法2. 保证入参不为null