Promise调用两个接口，第二个接口的入参为第一个接口的返回值

应用场景

Promise调用两个接口，第二个接口的入参为第一个接口的返回值

实例

1.两个接口的调用，正常的写法

// 登录接口
function login(userInfo) {return new Promise(function(resolve, reject) {axios.get("/jeecg-boot/login/api/getLzUserDetailByToken", {	params: userInfo }).then((ress) => {if (ress.data.code == 200) {let userInfo = ress.data.result;window.sessionStorage.setItem("userInfo", JSON.stringify(userInfo));resolve(ress)}}).catch(() => {console.log("a")reject()})})
}
// 获取token
function getCpToken(userInfo) {return new Promise(function(resolve, reject) {axios.post("/jeecg-boot/login/api/getUserToken", userInfo).then((ress) => {if (ress.data.result) {let token = ress.data.result;window.sessionStorage.setItem("Token", token);window.sessionStorage.setItem("InfoCode", ress.data.code);resolve(ress)}}).catch(() => {console.log("b")reject()})})
}

2.实现异步调用
first().then( firstData =>{
return second({入参：})
})
.then(secondData =>{})

login({accessToken:userId})
.then((firstData) => {// 使用第一个接口返回的参数调用第二个接口return getCpToken(firstData.data.result);
})
.then((secondData) => {if (to.path == '/' || to.path == '/start') {next('/cpIndex')} else {next()}
})
.catch(() => {Toast.fail('登录失败');
})