# Error Handling
# Page
404
Page-level error handling is handled uniformly by the vue-router. All pages that do not match the correct route will advance to the 404 page.
{ path: '*', redirect: '/404' }
WARNING
One thing that needs special attention here is that the 404 page must be loaded last. If you put 404 in the constantRoutes , then the following page will be blocked to 404. See the problem for details addRoutes when you've got a wildcard route for 404s does not work
401
Permission control is done in @/permission.js. All users who do not have permission to access this route will be redirected to the 401 page.
# Request
All the requests in the project will go through the axios instance created in @/utils/request.js. code。
You can use the service.interceptors.response, the response interceptor to harmonize different status codes according to your actual business or to perform error handling according to custom code. Such as:
service.interceptors.response.use(
response => {
/**
* The code is non-20000 error-free
*/
const res = response.data
if (res.code !== 20000) {
Message({
message: res.data,
type: 'error',
duration: 5 * 1000
})
// 50008: illegal token; 50012: other client logged in; 50014: Token expired;
if (res.code === 50008 || res.code === 50012 || res.code === 50014) {
MessageBox.confirm(
'你已被登出，可以取消继续留在该页面，或者重新登录',
'确定登出',
{
confirmButtonText: '重新登录',
cancelButtonText: '取消',
type: 'warning'
}
).then(() => {
store.dispatch('FedLogOut').then(() => {
location.reload() // 为了重新实例化vue-router对象 避免bug
})
})
}
return Promise.reject('error')
} else {
return response.data
}
},
error => {
console.log('err' + error) // for debug
Message({
message: error.message,
type: 'error',
duration: 5 * 1000
})
return Promise.reject(error)
}
)
Since all requests return a promise, you can also pass a catch error for each request, which allows for separate processing.
getInfo()
.then(res => {})
.catch(err => {
xxxx
})
# Coding
This project also does code-level error handling. If you enable eslint, you will be prompted for errors when writing code. Such as:
Of course there are many errors that cannot be checked by eslint, vue also provides global error handling hookserrorHandler. The project also made a corresponding error collection.
