JavaScript / GSON：通过对象图动态访问JSON引用（循环引用） [英] JavaScript/GSON: Access JSON references dynamically over object graph (circular references)

问题描述

我遇到了问题，因为有几个循环引用，通过Google GSON序列化我的Java对象。我的所有尝试都以StackOverflowException结束，因为GSON无法处理这些循环引用。

作为解决方案，我发现以下 GraphAdapterBuilder ：

http://code.google.com/p/google-gson/source/browse/trunk /extras/src/main/java/com/google/gson/graph/GraphAdapterBuilder.java?r=1170

示例：
< a href =https://groups.google.com/forum/#!topic/google-gson/z2Ax5T1kb2M =nofollow> https://groups.google.com/forum/#!topic/google- gson / z2Ax5T1kb2M

  {
0x1：{
name： Google，
employees：[
0x2，
0x3
] 
}，
0x2：{
name：Jesse，
company：0x1
}，
0x3：{
name：Joel，
公司：0x1
 } 
} 
  

这个工作得很好，但我仍然无法访问参考值（0xn）在对象图上动态变化，如：

alert（0x3.company.name）; - - >应该打印谷歌，但我只收到 undefined

是否有可能实现此目的？

也许用自定义 JSON.parse（ajaxResponse，function（key，value）{} 函数替换变量与引用的对象树？

解决方案

对于未来的用户，请参阅使用GraphAdapterBuilder的这个答案：

I had the problem, to serialize my Java objects through Google GSON, because of several circular references. All my tries ended up in a StackOverflowException, because GSON is not able to handle those circular references.

As a solution, I found following GraphAdapterBuilder:

http://code.google.com/p/google-gson/source/browse/trunk/extras/src/main/java/com/google/gson/graph/GraphAdapterBuilder.java?r=1170

Example: https://groups.google.com/forum/#!topic/google-gson/z2Ax5T1kb2M

{
  "0x1": {
    "name": "Google",
    "employees": [
      "0x2",
      "0x3"
    ]
  },
  "0x2": {
    "name": "Jesse",
    "company": "0x1"
  },
  "0x3": {
    "name": "Joel",
    "company": "0x1"
  }
}

This is working very well, but I am still not able to access the reference values (0xn) dynamically over the object graph like:

alert(0x3.company.name); --> Should print "Google", but I only receive undefined

Is it somehow possible to achieve this?

Maybe with a custom JSON.parse(ajaxResponse, function(key,value) {} function which replaces the variable with the referenced object tree?

解决方案

For future users, refer to this answer which uses GraphAdapterBuilder: https://stackoverflow.com/a/10046134/1547266

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