Java 抛出JSONArray[0]的有效JSON不是JSONObject

我拥有由和验证的有效JSON。我在网上看到过其他类似的帖子：

提取JSON的代码如下：

JSONObject jsonObject = new JSONObject(strData);
JSONArray jsonADSArray = jsonObject.getJSONArray("advance_purchases");
int i = 0;
while(i < jsonADSArray.length()){

    JSONObject obj = jsonADSArray.getJSONObject(i);

}

抛出错误：

JSONArray[0] is not a JSONObject

使用REST POST传入strData的位置：

{
    "advance_purchases": [
        "{ \"_id\":40, \"cancel_date\":1585760255892, \"cancel_user\":\"FACTORY\", \"create_date\":1585760206434, \"create_user\":\"FACTORY\", \"purchase_date\":1585918800000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":53, \"cancel_date\":1585921300976, \"cancel_user\":\"Shipped\", \"create_date\":1585914517011, \"create_user\":\"FACTORY\", \"purchase_date\":1585918800000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":54, \"cancel_date\":1585945994083, \"cancel_user\":\"Shipped\", \"create_date\":1585914517021, \"create_user\":\"FACTORY\", \"purchase_date\":1585929600000, \"purchase_id\":729, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":41, \"cancel_date\":1585760255920, \"cancel_user\":\"FACTORY\", \"create_date\":1585760207083, \"create_user\":\"FACTORY\", \"purchase_date\":1586005200000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":42, \"cancel_date\":1585760255932, \"cancel_user\":\"FACTORY\", \"create_date\":1585760207093, \"create_user\":\"FACTORY\", \"purchase_date\":1586016000000, \"purchase_id\":729, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":56, \"cancel_date\":0, \"cancel_user\":\"\", \"create_date\":1585921279663, \"create_user\":\"FACTORY\", \"purchase_date\":1586005200000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":57, \"cancel_date\":0, \"cancel_user\":\"\", \"create_date\":1585921279685, \"create_user\":\"FACTORY\", \"purchase_date\":1586016000000, \"purchase_id\":729, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":43, \"cancel_date\":1585861077997, \"cancel_user\":\"Purchase Changed\", \"create_date\":1585760207724, \"create_user\":\"FACTORY\", \"purchase_date\":1586091600000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":44, \"cancel_date\":0, \"cancel_user\":\"\", \"create_date\":1585860099795, \"create_user\":\"FACTORY\", \"purchase_date\":1586102400000, \"purchase_id\":729, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":55, \"cancel_date\":0, \"cancel_user\":\"\", \"create_date\":1585914513604, \"create_user\":\"FACTORY\", \"purchase_date\":1586091600000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":45, \"cancel_date\":1585861078013, \"cancel_user\":\"Purchase Changed\", \"create_date\":1585860109341, \"create_user\":\"FACTORY\", \"purchase_date\":1586178000000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":46, \"cancel_date\":0, \"cancel_user\":\"\", \"create_date\":1585860109353, \"create_user\":\"FACTORY\", \"purchase_date\":1586188800000, \"purchase_id\":729, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":58, \"cancel_date\":0, \"cancel_user\":\"\", \"create_date\":1585921275924, \"create_user\":\"FACTORY\", \"purchase_date\":1586178000000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":47, \"cancel_date\":1585861078023, \"cancel_user\":\"Purchase Changed\", \"create_date\":1585860107142, \"create_user\":\"FACTORY\", \"purchase_date\":1586264400000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":48, \"cancel_date\":0, \"cancel_user\":\"\", \"create_date\":1585860107157, \"create_user\":\"FACTORY\", \"purchase_date\":1586275200000, \"purchase_id\":729, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":59, \"cancel_date\":0, \"cancel_user\":\"\", \"create_date\":1585921275944, \"create_user\":\"FACTORY\", \"purchase_date\":1586264400000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":49, \"cancel_date\":1585861078031, \"cancel_user\":\"Purchase Changed\", \"create_date\":1585860105853, \"create_user\":\"FACTORY\", \"purchase_date\":1586350800000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":50, \"cancel_date\":0, \"cancel_user\":\"\", \"create_date\":1585860105865, \"create_user\":\"FACTORY\", \"purchase_date\":1586361600000, \"purchase_id\":729, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":60, \"cancel_date\":0, \"cancel_user\":\"\", \"create_date\":1585921275964, \"create_user\":\"FACTORY\", \"purchase_date\":1586350800000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":51, \"cancel_date\":1585861078040, \"cancel_user\":\"Purchase Changed\", \"create_date\":1585860137954, \"create_user\":\"FACTORY\", \"purchase_date\":1586437200000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":52, \"cancel_date\":1585861078049, \"cancel_user\":\"Purchase Changed\", \"create_date\":1585860138874, \"create_user\":\"FACTORY\", \"purchase_date\":1586523600000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }"
    ]
}

及

返回21

既然JSON已经过验证，为什么代码会抛出错误

---

它确实是一个有效的JSON。但是{\\u id\：40，…\synched\：0}不是对象，而是字符串。请注意开头和结尾的位置

首先尝试对其进行反序列化：

JSONObject JSONObject=新的JSONObjectstrData； JSONArray jsonADSArray=jsonObject.getJSONArrayadvance\u； int i=0； whilei除了第一个元素，您是否尝试过删除所有元素以查看是否出现相同的异常？@efekctive是的，我尝试过。我尝试在数组中只使用1个对象，并将它们更改为相同的结果。更改处理数据的库，看看是否得到相同的结果results@efekctive使用来自Maven repo的json.org的json-20190722.jar。我从以前的jar更新到这个。所以，我尝试了多个罐子，结果都是一样的。不可打印字符？试试格森？

{
    "advance_purchases": [
        "{ \"_id\":40, \"cancel_date\":1585760255892, \"cancel_user\":\"FACTORY\", \"create_date\":1585760206434, \"create_user\":\"FACTORY\", \"purchase_date\":1585918800000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":53, \"cancel_date\":1585921300976, \"cancel_user\":\"Shipped\", \"create_date\":1585914517011, \"create_user\":\"FACTORY\", \"purchase_date\":1585918800000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":54, \"cancel_date\":1585945994083, \"cancel_user\":\"Shipped\", \"create_date\":1585914517021, \"create_user\":\"FACTORY\", \"purchase_date\":1585929600000, \"purchase_id\":729, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":41, \"cancel_date\":1585760255920, \"cancel_user\":\"FACTORY\", \"create_date\":1585760207083, \"create_user\":\"FACTORY\", \"purchase_date\":1586005200000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":42, \"cancel_date\":1585760255932, \"cancel_user\":\"FACTORY\", \"create_date\":1585760207093, \"create_user\":\"FACTORY\", \"purchase_date\":1586016000000, \"purchase_id\":729, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":56, \"cancel_date\":0, \"cancel_user\":\"\", \"create_date\":1585921279663, \"create_user\":\"FACTORY\", \"purchase_date\":1586005200000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":57, \"cancel_date\":0, \"cancel_user\":\"\", \"create_date\":1585921279685, \"create_user\":\"FACTORY\", \"purchase_date\":1586016000000, \"purchase_id\":729, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":43, \"cancel_date\":1585861077997, \"cancel_user\":\"Purchase Changed\", \"create_date\":1585760207724, \"create_user\":\"FACTORY\", \"purchase_date\":1586091600000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":44, \"cancel_date\":0, \"cancel_user\":\"\", \"create_date\":1585860099795, \"create_user\":\"FACTORY\", \"purchase_date\":1586102400000, \"purchase_id\":729, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":55, \"cancel_date\":0, \"cancel_user\":\"\", \"create_date\":1585914513604, \"create_user\":\"FACTORY\", \"purchase_date\":1586091600000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":45, \"cancel_date\":1585861078013, \"cancel_user\":\"Purchase Changed\", \"create_date\":1585860109341, \"create_user\":\"FACTORY\", \"purchase_date\":1586178000000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":46, \"cancel_date\":0, \"cancel_user\":\"\", \"create_date\":1585860109353, \"create_user\":\"FACTORY\", \"purchase_date\":1586188800000, \"purchase_id\":729, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":58, \"cancel_date\":0, \"cancel_user\":\"\", \"create_date\":1585921275924, \"create_user\":\"FACTORY\", \"purchase_date\":1586178000000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":47, \"cancel_date\":1585861078023, \"cancel_user\":\"Purchase Changed\", \"create_date\":1585860107142, \"create_user\":\"FACTORY\", \"purchase_date\":1586264400000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":48, \"cancel_date\":0, \"cancel_user\":\"\", \"create_date\":1585860107157, \"create_user\":\"FACTORY\", \"purchase_date\":1586275200000, \"purchase_id\":729, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":59, \"cancel_date\":0, \"cancel_user\":\"\", \"create_date\":1585921275944, \"create_user\":\"FACTORY\", \"purchase_date\":1586264400000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":49, \"cancel_date\":1585861078031, \"cancel_user\":\"Purchase Changed\", \"create_date\":1585860105853, \"create_user\":\"FACTORY\", \"purchase_date\":1586350800000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":50, \"cancel_date\":0, \"cancel_user\":\"\", \"create_date\":1585860105865, \"create_user\":\"FACTORY\", \"purchase_date\":1586361600000, \"purchase_id\":729, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":60, \"cancel_date\":0, \"cancel_user\":\"\", \"create_date\":1585921275964, \"create_user\":\"FACTORY\", \"purchase_date\":1586350800000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":51, \"cancel_date\":1585861078040, \"cancel_user\":\"Purchase Changed\", \"create_date\":1585860137954, \"create_user\":\"FACTORY\", \"purchase_date\":1586437200000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }",
        "{ \"_id\":52, \"cancel_date\":1585861078049, \"cancel_user\":\"Purchase Changed\", \"create_date\":1585860138874, \"create_user\":\"FACTORY\", \"purchase_date\":1586523600000, \"purchase_id\":728, \"rejected\":0, \"remote_id\":-1, \"synced\":0 }"
    ]
}

jsonADSArray.length()