Flutter CachedNetworkImage 使用网易云链接403错误解决方案

Flutter CachedNetworkImage 使用网易云链接403错误解决方案

报错信息

依旧是熟悉的错误

======== Exception caught by image resource service ================================================
The following HttpExceptionWithStatus was thrown resolving an image codec:
HttpException: Invalid statusCode: 403, uri = https://p1.music.126.net/q7UebOEf7TUkQ_NhBZSNlg==/109951167926630292.jpg?param=512y512

When the exception was thrown, this was the stack: 
Image provider: CachedNetworkImageProvider("https://p1.music.126.net/q7UebOEf7TUkQ_NhBZSNlg==/109951167926630292.jpg?param=512y512", scale: 1.0) 
 Image key: CachedNetworkImageProvider("https://p1.music.126.net/q7UebOEf7TUkQ_NhBZSNlg==/109951167926630292.jpg?param=512y512", scale: 1.0): CachedNetworkImageProvider("https://p1.music.126.net/q7UebOEf7TUkQ_NhBZSNlg==/109951167926630292.jpg?param=512y512", scale: 1.0)

解决办法

点击查看CachedNetworkImage的源码，再查看CachedNetworkImageProvider

找到Stream<ui.Codec> _loadBufferAsync()这一个方法

点击DefaultCacheManager跳转到相关源码

点击CacheManager跳转，然后找到Future<FileInfo> downloadFile()这么一个方法

点击downloadFile方法跳转

点击_downloadOrAddToQueue(url, key, authHeaders)方法跳转

点击_updateFile(url, key, authHeaders: authHeaders))方法

点击_download(cacheObject, authHeaders)方法

点击fileFetcher这个变量

点击HttpFileService()这个方法

点击Client()这个方法，然后跳转到这个页面

点击createClient()，然后可以看到这里有两个实现类browser_client.dart io_client.dart的文件路径

然后我们返回上一个页面，也就是刚刚createClient()的页面，往上看头文件

browser_client.dart文件修改如下

找到Future<StreamedResponse> send(BaseRequest request)这个方法，添加如下代码

request.headers.remove("user-agent", "Dart/3.1 (dart:io)");

io_client.dart文件修改如下

找到Future<IOStreamedResponse> send(BaseRequest request)这个方法，添加如下代码

ioRequest.headers.remove("user-agent", "Dart/3.1 (dart:io)");

至此修复完成