for循环异步请求，等所有请求返回了，再继续执行下一步请求
// urltemp是要发送请求的目标地址数组，长度等于发请求次数
let arr = [];
let that = this;
for (let i in urlTemp) {
arr.push(
new Promise(function(resolve, reject) {
// 跨域
let realHealthyUrl = window.location.protocol + '//' + window.location.host + '//' + urlTemp[i].replace('http://', '') + '/xxxxx/health';
axios
.get(realHealthyUrl)
.then(res => {
if (!res || !res.data || res.data.statusCode !== 'API-COMMON-INF-OK') {
console.log('接口调用失败')
} else {
resolve(res);
}
})
.catch(() => {
console.log('网站无响应');
});
})
);
}
Promise.all(arr).then(result => {
this.dosomething();
});