javascript - 如何使用 axios 发出多个 api 请求
问题描述
我有现有服务通过我的反应应用程序中的 axios 进行 api 调用,我认为一次仅限于一个 api 请求,我想使用axios.all发出多个请求,但我无法找到修改方法服务,见下文是代码
如在 Action.js 中,您可以看到我合并了两个请求,我想这是错误的,请帮助我如何使用 axios.all 合并两个请求,并建议 api 服务实现是正确的,或者我可以做些什么来改进它
APIService.js
import axios from 'axios';
import apiConfig from './apiConfig';
import UserSession from './userSession';
import history from '../utils/history/history';
const session = sessionStorage;
var axiosConfig = axios.create({
baseURL: apiConfig.baseUrl,
headers: {
Authorization: sessionStorage.getItem('token') != null ?
`Bearer ${sessionStorage.getItem('token')}` : null,
Accept: 'application/json',
'Content-Type': 'application/json'
},
timeout: 20000,
responseType: 'json'
});
axiosConfig.interceptors.request.use((config) => {
config.headers.Authorization =
sessionStorage.getItem('token') != null ? `Bearer
${sessionStorage.getItem('token')}` : null;
return config;
},(error) => Promise.reject(error));
const apiService = function(options) {
const onSuccess = function(response) {
if (response.status === 201) {
return Promise.resolve(
Object.assign(
{},
{
message: response.statusText
}
)
);
} else if (response.status === 200) {
if ((response.data && response.data !== null) || response.data !==
undefined || response.data !== '') {
return response.data;
} else {
return Promise.resolve(
Object.assign(
{},
{
message: response.statusText
}
)
);
}
} else if (response.data.length < 1) {
return Promise.reject(
Object.assign(
{},
{
message: 'No Data'
}
)
);
} else {
return response.data;
}
};
const onError = function(error) {
if (error.response) {
if (error.response.status === 401) {
sessionStorage.removeItem('token');
window.location = '/login';
return Promise.reject(error.response);
} else if (error.response.status === 404) {
return Promise.reject(
Object.assign(
{},
{
message: error.response.statusText
}
)
);
} else if (error.response.status === 500) {
return Promise.reject(
Object.assign(
{},
{
message: error.response.statusText
}
)
);
} else {
return Promise.reject(error.response.data);
}
} else if (error.request) {
// The request was made but no response was received
return Promise.reject(
Object.assign(
{},
{
message: error.message
}
)
);
//return Promise.reject(error.message);
} else {
// Something else happened while setting up the request
// triggered the error
return Promise.reject(
Object.assign(
{},
{
message: error.message
}
)
);
}
};
return axiosConfig(options).then(onSuccess).catch(onError);
};
export default apiService;
请求.js
import apiService from '../apiService';
export const FirstRequest = () => {
return apiService({
url: 'FirstURL',
method: 'get',
});
};
export const SecondRequest = () => {
return apiService({
url: 'SecondURL',
method: 'get',
});
};
动作.js
export const SomeHandler = () => (dispatch) => {
dispatch({
type: API_REQUEST
});
FirstRequest()
.then((res) => {
dispatch({
type: API_SUCCESS
});
SecondRequest().then((res) => {
dispatch({
type: API_SUCCESS
});
dispatch({ type: VIEW1, payload: res });
dispatch({ type: VIEW2, payload: res });
}).catch((err) => {
dispatch({
type: API_FAILURE,
payload: err
});
});
})
.catch((err) => {
dispatch({
type: API_FAILURE,
payload: err
});
});
};
解决方案
这与 axios 完全无关。您可以使用库将两个异步函数组合在一个操作方法中async
:
async.parallel([
getUsers,
getComments
],
function(err, results) {
// the results array will equal to [[], {'x': 'y'}] even though
// the second function had a shorter timeout.
// dispatch here
});
function getUsers(callback) {
callback(null, [])
}
function getComments(callback) {
callback(null, {'x': 'y'})
}
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