怎么将两个list集合按照条件合成一个list

[zhiyuku4]

{
    "list1": [
        {
            "id": "238",
            "username": "凤20",
            "peiouid": "255,258"
        }
    ],
    "list2": [
        {
            "id": "255",
            "username": "wo1",
            "peiouid": null
        },
        {
            "id": "258",
            "username": "1231132",
            "peiouid": ""
        }
    ]
}

上面的两个list集合，我想通过条件查找list2中的id 是在 "peiouid": "255,258"的，找到后把他和在一起，
最终变成

{
    "list1": [
        {
            "id": "238",
            "username": "凤20",
            "peiouid": "255,258",
            "list2": [
                {
                    "id": "255",
                    "username": "wo1",
                    "peiouid": null
                },
                {
                    "id": "258",
                    "username": "1231132",
                    "peiouid": ""
                }
            ]
        }
    ]
}

[尼古拉斯-全蛋]

转成json对象操作一下

[zhiyuku4]

引用 1 楼 qnmdcsdn 的回复:

转成json对象操作一下

然后怎么匹配条件 装进去，主要难在这

[爱睡觉的阿狸]

取出peiouid的值，peiouid.contain(id)，像这样依次和list2的所有id进行比较

[爱睡觉的阿狸]

fastjson的JSONObject有个put方法，可以让你把list2放入list1里。

[zhiyuku4]

引用 3 楼 m2200 的回复:

取出peiouid的值，peiouid.contain(id)，像这样依次和list2的所有id进行比较

这个peiouid的值是多个的 所以你这样匹配是 匹配不了的，然后那个put是直接装进去。我也试过其他的add或者addAll 这都是直接装，没有显示出层级关系

[浮云若水]

JSONArray list2=JSONObject,getJSONArray("list2"); JSONObject list1=JSONObject,getJSONObject("list1"); for(int i=0;i<list2.size();i++){ //这中间可以把list2 中不满足条件的剔除 } list1.put("list2",list2);

[浮云若水]

手打的上面. 打错

[爱睡觉的阿狸]

引用 5 楼 zhiyuku4 的回复:

[quote=引用 3 楼 m2200 的回复:] 取出peiouid的值，peiouid.contain(id)，像这样依次和list2的所有id进行比较

这个peiouid的值是多个的 所以你这样匹配是 匹配不了的，然后那个put是直接装进去。我也试过其他的add或者addAll 这都是直接装，没有显示出层级关系[/quote] 哎

[爱睡觉的阿狸]

public class TestJson {

	public static void main(String[] args) {
		String s = "{" + "\"list1\": [" + "{" + "\"id\": \"238\","
				+ "\"username\": \"凤20\"," + "\"peiouid\": \"255,258\"" + "}"
				+ "]," + "\"list2\": [" + "{" + "\"id\": \"255\","
				+ "\"username\": \"wo1\"," + "\"peiouid\": null" + "}," + "{"
				+ "\"id\": \"258\"," + "\"username\": \"1231132\","
				+ "\"peiouid\": \"\"" + "}" + "]" + "}";
		JSONObject jo = JSON.parseObject(s);
		JSONArray joList1 = jo.getJSONArray("list1");
		String peiouid = joList1.getJSONObject(0).getString("peiouid");
		JSONArray jaList = new JSONArray();
		JSONArray jaList2 = jo.getJSONArray("list2");
		for(int i=0;i<jaList2.size();i++){
			JSONObject ji = jaList2.getJSONObject(i);
			if(peiouid.contains(ji.getString("id"))){
				jaList.add(ji);
			}
		}
		joList1.getJSONObject(0).put("list2", jaList);
		JSONObject jsonObject = new JSONObject();
		jsonObject.put("list1", joList1);
		System.out.println(jsonObject);
	}
}

[zhiyuku4]

引用 9 楼 m2200 的回复:

public class TestJson {

	public static void main(String[] args) {
		String s = "{" + "\"list1\": [" + "{" + "\"id\": \"238\","
				+ "\"username\": \"凤20\"," + "\"peiouid\": \"255,258\"" + "}"
				+ "]," + "\"list2\": [" + "{" + "\"id\": \"255\","
				+ "\"username\": \"wo1\"," + "\"peiouid\": null" + "}," + "{"
				+ "\"id\": \"258\"," + "\"username\": \"1231132\","
				+ "\"peiouid\": \"\"" + "}" + "]" + "}";
		JSONObject jo = JSON.parseObject(s);
		JSONArray joList1 = jo.getJSONArray("list1");
		String peiouid = joList1.getJSONObject(0).getString("peiouid");
		JSONArray jaList = new JSONArray();
		JSONArray jaList2 = jo.getJSONArray("list2");
		for(int i=0;i<jaList2.size();i++){
			JSONObject ji = jaList2.getJSONObject(i);
			if(peiouid.contains(ji.getString("id"))){
				jaList.add(ji);
			}
		}
		joList1.getJSONObject(0).put("list2", jaList);
		JSONObject jsonObject = new JSONObject();
		jsonObject.put("list1", joList1);
		System.out.println(jsonObject);
	}
}

感谢大佬 学习了，

[nikyotensai]

引用 9 楼 m2200 的回复:

public class TestJson {

	public static void main(String[] args) {
		String s = "{" + "\"list1\": [" + "{" + "\"id\": \"238\","
				+ "\"username\": \"凤20\"," + "\"peiouid\": \"255,258\"" + "}"
				+ "]," + "\"list2\": [" + "{" + "\"id\": \"255\","
				+ "\"username\": \"wo1\"," + "\"peiouid\": null" + "}," + "{"
				+ "\"id\": \"258\"," + "\"username\": \"1231132\","
				+ "\"peiouid\": \"\"" + "}" + "]" + "}";
		JSONObject jo = JSON.parseObject(s);
		JSONArray joList1 = jo.getJSONArray("list1");
		String peiouid = joList1.getJSONObject(0).getString("peiouid");
		JSONArray jaList = new JSONArray();
		JSONArray jaList2 = jo.getJSONArray("list2");
		for(int i=0;i<jaList2.size();i++){
			JSONObject ji = jaList2.getJSONObject(i);
			if(peiouid.contains(ji.getString("id"))){
				jaList.add(ji);
			}
		}
		joList1.getJSONObject(0).put("list2", jaList);
		JSONObject jsonObject = new JSONObject();
		jsonObject.put("list1", joList1);
		System.out.println(jsonObject);
	}
}

公交哥还是高手