对象分配深拷贝导致麻烦

Question

我有一个对象数组，我在将其提交给控制器之前对其进行了转换。

要复制的Angular代码如下：

    sourceObjArray: SourceObject[] = [..];
    targetObjArray: SourceObject[]= [];
    targetObjArray = object.assign(sourceObjArray);
   // when i change target object it also cause source object to change
    transformSourceObject(targetObjArray)

以下似乎有效：

targetObjArray = object.assign({}, sourceObjArray);
// when i call transform it does not effect source object :)
transformSourceObject(targetObjArray)

但它会导致以下问题。

Could not read document: Can not deserialize instance of java.util.ArrayList out of START_OBJECT token at [Source: java.io.PushbackInputStream@302753d0; line: 1, column: 1]; nested exception is com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of java.util.ArrayList out of START_OBJECT token at [Source: java.io.PushbackInputStream@302753d0; line: 1, column: 1]

我的控制器方法签名是：

@RequestMapping(.., method=RequestMethod.POST)
public save(@RequestBody List<Object>, BindResult bindResult){}

Answer 1

参考下面的帖子，发现下面的代码sn-p工作

How can i use angular.copy in angular 2

duplicateObject = <YourObjType> JSON.parse(JSON.stringify(originalObject));