JSONObject accumulate

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原文 http://blog.csdn.net/z69183787/article/details/18655143

public JSONObject accumulate (String key, Object value) 累积value到这个key下。这个方法同element()方法类似，特殊的是，如果当前已经存在一个value在这个key下那么一个JSONArray将会存储在这个key下来保存所有累积的value。如果已经存在一个JSONArray，那么当前的value就会添加到这个JSONArray中

。相比之下replace方法会替代先前的value

Accumulate values under a key. It is similar to the element method except that if there is already an object stored

under the key then a JSONArray is stored under the key to hold all of the accumulated values. If there is already a

JSONArray, then the new value is appended to it. In contrast, the replace method replaces the previous value.

public JSONObject element (String key, Object value) 将键/值对放到这个JSONObject对象里面。如果当前value为空(null)，那么如果这个key存在的话，这个key就会移除掉。如果这

个key之前有value值，那么此方法会调用accumulate()方法。

Put a key/value pair in the JSONObject. If the value is null, then the key will be removed from the JSONObject if it is

present. If there is a previous value assigned to the key, it will call accumulate.

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