Question

这是我运行react-native start时得到的输出，正如您所看到的，它给出了404错误。

我尝试用chrome打开页面，然后显示Cannot GET /。

即使在通过wifi连接设备并输入机器的IP地址之后，应用程序也无法在移动设备上运行。它被卡在红色屏幕上Unable to load JS Bundle.

出了什么问题？

   C:\Users\Abhishek\Desktop\SpeedRead>react-native start
     ┌────────────────────────────────────────────────────────────────────────────┐
     │  Running packager on port 8081.                                            │
     │                                                                            │
     │  Keep this packager running while developing on any JS projects. Feel      │
     │  free to close this tab and run your own packager instance if you          │
     │  prefer.                                                                   │
     │                                                                            │
     │  https://github.com/facebook/react-native                                  │
     │                                                                            │
     └────────────────────────────────────────────────────────────────────────────┘
    Looking for JS files in
       C:\Users\Abhishek\Desktop\SpeedRead

    [3:25:35 PM] <START> Building Dependency Graph
    [3:25:35 PM] <START> Crawling File System
    [3:25:35 PM] <START> Loading bundles layout
    [3:25:35 PM] <END>   Loading bundles layout (0ms)

    React packager ready.

    [3:25:44 PM] <END>   Crawling File System (9096ms)
    [3:25:44 PM] <START> Building in-memory fs for JavaScript
    [3:25:45 PM] <END>   Building in-memory fs for JavaScript (554ms)
    [3:25:45 PM] <START> Building in-memory fs for Assets
    [3:25:45 PM] <END>   Building in-memory fs for Assets (521ms)
    [3:25:45 PM] <START> Building Haste Map
    [3:25:46 PM] <START> Building (deprecated) Asset Map
    [3:25:46 PM] <END>   Building (deprecated) Asset Map (95ms)
    [3:25:49 PM] <END>   Building Haste Map (3482ms)
    [3:25:49 PM] <END>   Building Dependency Graph (13858ms)
    ::1 - - [31/Jan/2016:09:56:19 +0000] "GET / HTTP/1.1" 404 13 "-" "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2564.97 Safari/537.36"
    ::1 - - [31/Jan/2016:09:56:19 +0000] "GET /favicon.ico HTTP/1.1" 404 24 "http://localhost:8081/" "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2564.97 Safari/537.36"

我看过的问题：

react native android failed to load JS bundle

但它没有用。

Answer 1

如果您想确保打包者正在加载，则需要导航到http://localhost:8081/js/index.android.bundle?platform=android。如果您仍然获得404，那么您的网络配置很可能出现问题。

如果您可以在网络上启动它，请在手机通过USB adb reverse tcp:8081 tcp:8081插入手机的情况下运行。

React-Native不能GET /和JS Bundle

1 个答案: