如何使用颤振中的代码自动格式化错误的json

Question

我试图解析一个 json 响应。但是，响应末尾有一个逗号，在解码时会引发错误。如果从代码中删除逗号并对其进行验证，我如何自动格式化？

[{"id" : "9991","last_message" : "How about tomorrow then?","members" : ["John", "Daniel", "Rachel"],"topic" : "pizza night", "modified_at" : 1599814026153}, {"id" : "9992","last_message" : "I will send them to you asap","members" : ["Raphael"],"topic" : "slides", "modified_at" : 1599000026153}, {"id" : "9993","last_message" : "Can you please?","members" : ["Mum", "Dad", "Bro"],"topic" : "pictures", "modified_at" : 1512814026153},]

错误

D/EGL_emulation( 7121): app_time_stats: avg=32.94ms min=4.95ms max=83.26ms count=30
E/flutter ( 7121): [ERROR:flutter/shell/common/shell.cc(93)] Dart Unhandled Exception: FormatException: Unexpected character (at character 435)
E/flutter ( 7121): ..."Mum", "Dad", "Bro"],"topic" : "pictures", "modified_at" : 1512814026153},]

Answer 1

因此，您应该从源代码中提供一些代码，但我认为您使用的是 http.Response 对象，因此您可以执行以下操作：

String bodyRes = response.body;
bodyRes = bodyRes.endsWith(',]') ? bodyRes.replaceFirst(',]', ']', bodyRes.length - 2) : bodyRes;