如何在Java中将多个对象组合为一个? [英] how to combine multiple objects into one in java?

问题描述

我遇到一个问题，我想将多个对象合并到下面的一个数组列表对象(如我的架构)中.有人知道如何通过下面的代码使它像我的架构吗?感谢您的帮助.非常感激. PS:如果您想查看我的项目代码以更好地理解我的问题，请告诉我.

I am coming to an issue, where I want to combine multiple objects into one array list object (like my schema) below. Does anyone know how to make it like my schema with my code below? thank you for your help. Much Appreciated. PS: Let me know if you want to see my project code in order to understand my problem well.

(这是我想要的方式)

{

 "hourly": [
    String , 
],
"weekly": [
    String  ,
"yearly": [
    String,  
],
  }

推荐答案

我建议另一种方法.创建DTO( https://en.wikipedia.org/wiki/Data_transfer_object )以代表您的回复.然后，您只需要填充DTO字段，然后将其发送到jackson或GSON进行序列化即可.

I would recommend another approach. Create DTO's (https://en.wikipedia.org/wiki/Data_transfer_object) to represent your response. Then you just have to populate the DTO fields and send It to jackson or GSON to be serialized.

这避免了手动连接每个字段以及杰克逊/GSON已经完成的许多代码.此外，它还分隔了程序逻辑，序列化逻辑和POJO映射.

This avoids manually wiring each field and a lot of code that jackson/GSON already do. Also, It separates program logic, serialization logic, and POJO mapping.

以下是将POJO解析为杰克逊的一些示例: https://www.mkyong .com/java/how-to-convert-java-object-to-from-json-jackson/

Here are some examples of parsing POJO to jackson: https://www.mkyong.com/java/how-to-convert-java-object-to-from-json-jackson/

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