如何在节点中检查req.body是否为空,表示? [英] How to check req.body empty or not in node ,express?
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问题描述
以下是我的请求正文,从客户端发送
Below is my request body and which is sending from client side
var credentials = {
"ConsumerData": {
"ConsumerStoreId": "a",
"ConsumerUserId": "a"
},
"CustomerData": {
"CustomerId": "2345678890"
},
"ErnD": {
"UID": "3",
"TxnDt": "1"
},
"PurD": [{
"ItemCode": "3456tghw3",
"ItemEANCode": "223222122"
},
{
"ItemCode": "8jghw3865",
"ItemEANCode": "3334443222"
}
]
}
用于测试我发送 var credentials = {}
空凭据
在服务器端控制器(节点,快递)中我想检查req.body是否为空
In server side controller(node,express) i want to check req.body empty or not
if(!req.body)
{
console.log('Object missing');
}
if(!req.body.ConsumerData.ConsumerStoreId)
{
console.log('ConsumerStoreId missing');
}
if(!req.body.CustomerData.CustomerId)
{
console.log('CustomerId missing');
}
if(!req.body.ErnD.UID)
{
console.log('UID missing');
}
console.log('outside');
我正在检查所有东西,但只是在外面打印
i am checking everything but alwasys its printing outside only
推荐答案
ES2015:
if(req.body.constructor === Object && Object.keys(req.body).length === 0) {
console.log('Object missing');
}
PRE ES2015:
function isEmpty(obj) {
for(var prop in obj) {
if(obj.hasOwnProperty(prop))
return false;
}
return JSON.stringify(obj) === JSON.stringify({});
}
if(isEmpty(req.body)) {
console.log('Object missing');
}
有关 pre es2015 风格的更多方式: https://coderwall.com/p/_g3x9q / how-to-check-if-javascript-object-is-empty
For more ways in a pre es2015 style: https://coderwall.com/p/_g3x9q/how-to-check-if-javascript-object-is-empty
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