could not read json : unrecognized field "$$hashkey"
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使用Angular Js从前台传数据到后台时报如下所示的错误
在前台选中一条记录之后Angular Js自动生成了一个hashKey,一般是在使用JSON.stringfy(obj)时产生的用在angular内部使用的值。
要防止该值产生可以在转Json时使用angular.toJson(obj)。
或者使用ng-repeat时按照如下格式 <tbody>
<tr ng-repeat="row in data track by $index">
<td ng-repeat="field in headers track by $index">{{row[field.caption]}}</td>
</tbody>
或者在后台的entity文件中加上@JsonIgnoreProperties(ignoreUnknown = true)的注解,可以忽略Json中在数据库中不存在的值
stackoverflow上关于此问题的回答
stackoverflow上关于$$hashKey产生原因的解释
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