log body when json exception (#846)
log body when json exception (#846)

wechaty/wechaty,binsee/wechaty,wechaty/wechaty,zixia/wechaty,mukaiu/wechaty,Chatie/wechaty,Chatie/wechaty,binsee/wechaty,mukaiu/wechaty,Chatie/wechaty,lijiarui/wechaty,mukaiu/wechaty,binsee/wechaty,zixia/wechaty,wechaty/wechaty,lijiarui/wechaty