add redirect for notfound route

Author: yyx990803

src/index.js

@@ -61,6 +61,7 @@ class Router {
     this._currentTransition = null
     this._previousTransition = null
     this._notFoundHandler = null
+    this._notFoundRedirect = null
     this._beforeEachHooks = []
     this._afterEachHooks = []
 
@@ -315,7 +316,11 @@ class Router {
    */
 
   _addRedirect (path, redirectPath) {
-    this._addGuard(path, redirectPath, this.replace)
+    if (path === '*') {
+      this._notFoundRedirect = redirectPath
+    } else {
+      this._addGuard(path, redirectPath, this.replace)
+    }
   }
 
   /**
@@ -363,6 +368,12 @@ class Router {
     if (matched) {
       matched[0].handler(matched[0], matched.queryParams)
       return true
+    } else if (this._notFoundRedirect) {
+      matched = this._recognizer.recognize(path)
+      if (!matched) {
+        this.replace(this._notFoundRedirect)
+        return true
+      }
     }
   }
 

test/unit/specs/core.js

@@ -529,15 +529,17 @@ describe('Core', function () {
     })
     router.redirect({
       '/whatever': '/a/b',
-      '/ok': '/a/c'
+      '/ok': '/a/c',
+      '*': '/a/b'
     })
     var App = Vue.extend({
       template: '<div><router-view></router-view></div>'
     })
     router.start(App, el)
     assertRoutes([
       ['/whatever', 'hello'],
-      ['/ok?msg=world', 'world']
+      ['/ok?msg=world', 'world'],
+      ['/fesfsefsef', 'hello']
     ], done)
   })