无法在 routerOnActivate 上获取查询参数
Cannot get query Params on routerOnActivate
我在尝试使用新的路由库获取查询参数时遇到问题。
版本
2.0.0-rc.1
问题
routerOnActivate(curr:RouteSegment, prev?:RouteSegment, currTree?:RouteTree, prevTree?:RouteTree):void {
console.log(curr.getParam("test"));
}
总是打印 undefined
另一个问题是我的url每次都得到"reseted"(这就是为什么我认为curr.getParam("test")returns未定义)
这是我的 App 组件和我的 Home 组件:
应用组件
import {Component} from '@angular/core';
import { Routes, ROUTER_DIRECTIVES, ROUTER_PROVIDERS, Router } from '@angular/router'
import { HomeComponent } from './home.component';
@Component({
selector : 'my-app',
template : '<router-outlet></router-outlet>',
directives : [ ROUTER_DIRECTIVES ],
providers : [ ROUTER_PROVIDERS ]
})
@Routes([
{
path : '/',
component : HomeComponent
}
])
export class AppComponent {
constructor (private _router : Router) {
}
}
主页组件
import { Component } from '@angular/core';
import { Router, OnActivate, RouteSegment } from '@angular/router';
@Component({
selector: 'home',
template: '<h3>THIS IS HOME</h3>'
})
export class HomeComponent implements OnActivate{
constructor(private _router : Router) {
console.log('Called');
}
routerOnActivate(curr:RouteSegment):void {
console.log(curr.getParam("test"));
}
}
测试URL
localhost:3000/?test=helloworld --> 更改为(问题)localhost:3000
有人可以帮忙吗?
您的代码看起来不错,唯一的问题是根据 official Angular 2 documentation:
The query string parameters are no longer separated by "?" and "&". They are separated by semicolons (;) This is matrix URL notation — something we may not have seen before. Matrix URL notation is an idea first floated in a 1996 proposal and although it never made it into the HTML standard, it is legal and it became popular among browser routing systems as a way to isolate parameters belonging to parent and child routes. The Angular Component Router is such a system.
因此,您可以通过将地址从
更改为从当前 RouteSegment 获取可选参数(测试)的值
localhost:3000/?test=helloworld
至
localhost:3000/;test=helloworld
我在尝试使用新的路由库获取查询参数时遇到问题。
版本 2.0.0-rc.1
问题
routerOnActivate(curr:RouteSegment, prev?:RouteSegment, currTree?:RouteTree, prevTree?:RouteTree):void {
console.log(curr.getParam("test"));
}
总是打印 undefined
另一个问题是我的url每次都得到"reseted"(这就是为什么我认为curr.getParam("test")returns未定义)
这是我的 App 组件和我的 Home 组件:
应用组件
import {Component} from '@angular/core';
import { Routes, ROUTER_DIRECTIVES, ROUTER_PROVIDERS, Router } from '@angular/router'
import { HomeComponent } from './home.component';
@Component({
selector : 'my-app',
template : '<router-outlet></router-outlet>',
directives : [ ROUTER_DIRECTIVES ],
providers : [ ROUTER_PROVIDERS ]
})
@Routes([
{
path : '/',
component : HomeComponent
}
])
export class AppComponent {
constructor (private _router : Router) {
}
}
主页组件
import { Component } from '@angular/core';
import { Router, OnActivate, RouteSegment } from '@angular/router';
@Component({
selector: 'home',
template: '<h3>THIS IS HOME</h3>'
})
export class HomeComponent implements OnActivate{
constructor(private _router : Router) {
console.log('Called');
}
routerOnActivate(curr:RouteSegment):void {
console.log(curr.getParam("test"));
}
}
测试URL
localhost:3000/?test=helloworld --> 更改为(问题)localhost:3000
有人可以帮忙吗?
您的代码看起来不错,唯一的问题是根据 official Angular 2 documentation:
The query string parameters are no longer separated by "?" and "&". They are separated by semicolons (;) This is matrix URL notation — something we may not have seen before. Matrix URL notation is an idea first floated in a 1996 proposal and although it never made it into the HTML standard, it is legal and it became popular among browser routing systems as a way to isolate parameters belonging to parent and child routes. The Angular Component Router is such a system.
因此,您可以通过将地址从
localhost:3000/?test=helloworld
至
localhost:3000/;test=helloworld