JAVA使用servlet接收json格式的方法

JAVA中使用HttpServletRequest接收前台传入的参数,其中json的格式是[{“penalty”:“0.5”,“deductPointsItem”:“7”,“photoUrl”:“image%26quality=80%26size=b9999_10000%26sec=1563345441764%26di=f860a9dfb3c08c90fb50fc439be8dcee%26imgtype=0%26src=http://pic37.nipic.com/20140113/8800276_184927469000_2.png”},{“penalty”:“2”,“deductPointsItem”:“8”,“photoUrl”:“image%26quality=80%26size=b9999_10000%26sec=1563345441764%26di=f860a9dfb3c08c90fb50fc439be8dcee%26imgtype=0%26src=http://pic37.nipic.com/20140113/8800276_184927469000_2.png”}]

以这种格式传入的话,会报400的错误，是因为http请求链接后面不允许出现特殊字符

所有就必须改成

%5B%7b%22penalty%22:%220.5%22,%22deductPointsItem%22:%227%22,%22photoUrl%22:%22http://pic37.nipic.com/20140113/8800276_184927469000_2.png%22%7d,%7b%22penalty%22:%222%22,%22deductPointsItem%22:%228%22,%22photoUrl%22:%22http://pic37.nipic.com/20140113/8800276_184927469000_2.png%22%7d%5D

其中**[改成了%5B**,]改成了%5D,"改成了%22，{改成了%7b,}改成了%7d

转义格式可以参考https://blog.youkuaiyun.com/superit401/article/details/78052965