Day4-6测试积点任务
问题：在以下的json中，我需要得到的几个字段是：当set.class.0非空的时候，返回该set列表中的某些字段
{
"code": 0,
"msg": null,
"data": {
"set": [
{
"id": "1566", "type": 1,
"class": { "0": [],"1": [ "460"],"2": ["460","460","461" ] },
},
{
"id": "1788", "type": 1,
"class": { "0": [ "461" ], "1": [], "2": [ "460" ]},
},
{
"id": "1762","type": 1,
"class": { "0": [],"1": [ "461" ], "2": [ "460" ],
},
{
"id": "1790","type": 1,
"class": { "0": [ "460","461"], "1": [], "2": [] },
},
{
"id": "1792","type": 2,
"class": {"0": [ "460", "461"], "1": [],"2": []
},
},]
}}
既是当存在"0": [ "461" ]与"0": [ "460", "461"]等”0“为非空内容时，取set中的id,type与”0"的属性值，在此例子中，则是得到id=1788,type=1,"0"=461。我用jsonpath仅仅是实现了当set.class.0非空的时候，返回整个set:
List<Object> list=JsonPath.read(string, "$.data.set[?(@.class.0.length()>0]");得到的结果是
{
"id": "1788", "type": 1,
"class": { "0": [ "461" ], "1": [], "2": [ "460" ]},
},
{
"id": "1790","type": 1,
"class": { "0": [ "460","461"], "1": [], "2": [] },
},
{
"id": "1792","type": 2,
"class": {"0": [ "460", "461"], "1": [],"2": []},
}
疑问：若有使用过jsonpath的人，可否回答下jsonpath是否还可以对已筛选的出的内容再次做检索。或者是还有其他的处理方法。非常感谢!
可以使用查询命令，重复递归需要保存以往的结果 应该可以继续进行吧，做个测试就行啊 在for循环里面递归 已经筛选的结果是list，用list.get（0）的时候，输出的结果因为丢失了原本的双引号，使用jsonpath再处理的时候便报错了。我应该顺便再问多一个，转义问题，怎么保留原本的双引号。
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