fix4375 解决快应用中路由跳转API不支持相对路径的问题

packages/taro-quickapp/src/api/router/index.js

@@ -1,5 +1,4 @@
 import router from '@system.router'
-
 import appGlobal from '../../global'
 import { addLeadingSlash, getUniqueKey } from '../../util'
 import { cacheDataGet, cacheDataSet } from '../../data-cache'
@@ -47,7 +46,22 @@ function qappNavigate (options = {}, method = 'push') {
     }
     params = getUrlParams(url)
     const markIndex = url.indexOf('?')
-    const parseUrl = addLeadingSlash(url.substr(0, markIndex >= 0 ? markIndex : url.length))
+    const componentPath = appGlobal.componentPath || ''
+    let parseUrl = url.substr(0, markIndex >= 0 ? markIndex : url.length)
+    const RelativeReg = /\.\.\//g
+    if (componentPath && RelativeReg.test(parseUrl)) {
+      //当前页面路径最后一级是文件，在计算路径时去除
+      var componentRootDir = componentPath.substr(0, componentPath.lastIndexOf('/'))
+      var pathArr = parseUrl.split('/')
+      //计算..出现的次数，每出现一次就往上一层
+      for(let path of pathArr) {
+        if (path === '..') {
+          componentRootDir = componentRootDir.substr(0, componentRootDir.lastIndexOf('/'))
+        }
+      }
+      parseUrl = componentRootDir + '/' + parseUrl.replace(RelativeReg, '')
+    }
+    parseUrl = addLeadingSlash(parseUrl)
     appGlobal.taroRouterParamsCache = appGlobal.taroRouterParamsCache || {}
     appGlobal.taroRouterParamsCache[parseUrl] = params
 
@@ -65,7 +79,7 @@ function qappNavigate (options = {}, method = 'push') {
     }
     try {
       router[method]({
-        uri: url.substr(0, url.lastIndexOf('/')),
+        uri: parseUrl.substr(0, parseUrl.lastIndexOf('/')),
         params
       })
       success && success(res)

packages/taro-quickapp/src/create-component.js

@@ -383,6 +383,7 @@ export default function createComponent (ComponentClass, isPage) {
         }
       }
     })
+    appGlobal.componentPath = isPage
     addLeadingSlash(isPage) && cacheDataSet(addLeadingSlash(isPage), ComponentClass)
   }
   bindStaticFns(componentConf, ComponentClass)