参考链接:https://stackoverflow.com/questions/55780644/how-to-handle-error-response-with-retrofit-coroutines
需求:
网络请求。后台返回500。但是需要显示body的json
{"code":201,"data":null,"message":"劵码非法:【yyy】","success":false}
retrofit2在非200的情况下都是会抛出异常。
只需要catch
retrofit2.HttpException
就可以获取到response 进而读取errorbody
suspend fun <T : Any> safeApiCall(call: suspend () -> Result<T>, errorMessage: String): Result<T> {
return try {
call()
}catch (httpex :HttpException){
//默认的错误提示语
var errorMessage = errorMessage
//获取response
var response= httpex.response()
//获取错误body的内容
val json = response?.errorBody()?.string()
//尝试转换成统一的json,try catch 是防止此异常并非服务器返回
try {
val baseJson = Gson().fromJson(json,BaseJson::class.java)
errorMessage = baseJson.message?:errorMessage
}catch (e:java.lang.Exception){
//json 转换异常就不处理了
e.printStackTrace()
}
Result.Error(IOException(errorMessage))
}
catch (e: Exception) {
e.printStackTrace()
// An exception was thrown when calling the API so we're converting this to an IOException
Result.Error(IOException(errorMessage, e))
}
}