postman测试接口通过脚本动态设置请求头参数

1、设置环境变量appId和secret

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2、设置脚本

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const appId = pm.environment.get('appId')
const secret = pm.environment.get('secret')

const method = pm.request.method

const timestamp = new Date().getTime()
const randomNum = parseInt((Math.random()*9+1)*100000)

var content = ''
var param = {}
var keyArray = []

param['api_time']=timestamp
param['api_random']=randomNum
keyArray.push('api_time')
keyArray.push('api_random')

if("GET" == method){
    const obj = pm.request.url.query.all()
    for(let key in obj){
        if(!obj[key]['disabled']){
            if(obj[key]['value'] != null){
                param[obj[key]['key']]=obj[key]['value']
                keyArray.push(obj[key]['key'])
            }
        }
    }
}else if("POST" == method){
    const requestBody = pm.request.body.raw
    console.log('requestBody', requestBody);
    if(requestBody){
        var obj = JSON.parse(requestBody);
        for(let key in obj){
            var value = obj[key]
            if(value != null && value != ''){
                param[key]=value
                keyArray.push(key)
            }
        }
    }
}

keyArray.sort();
keyArray.forEach(x => {
    content += x;
    content += '=';
    content += param[x];
    content += '&';
    
})

content += 'secret=';
content += secret;
console.log('content', content);
const md5 = CryptoJS.MD5(content).toString()
console.log('md5', md5);
const Signature = appId + '_' + md5 + '_' + timestamp + '_' + randomNum
console.log('Signature', Signature);

var signatureName = 'Signature'
pm.environment.set(signatureName, Signature)

// 添加或修改已存在 header
pm.request.headers.upsert({
    key: signatureName,
    value: Signature
})