下面是开发中遇到的复杂JSON，用TypeToken来进行处理：（当然还有第二种解析方式，请查看http://blog.csdn.net/jason_996/article/details/78039799）
处理方法：
1，先将接口返回的JSON，用gson.tojson(map)方法，将LinkedTreeMap对象转成String。
2，再通过gson.fromjson(string,type)方法，将String转成LinkedTreeMap。用到了Type type=new TypeToken<T>(){}.getType;
3，再将LinkedTreeMapf进行遍历
下面直接上代码：（例子中的数据内容与demo不一样，但数据 结构是一样的，为了不让公司的信息你懂得）
private String jsonString = "{\"Members\":{\"Owner\":{\"ID\":\"26\",\"LoginName\":\"gm1\",\"Name\":\"总经理A\",\"Email\":\"[email protected]\"},\"Host\":{\"ID\":\"29\",\"LoginName\":\"gm3\",\"Name\":\"总经理C\",\"Email\":\"\"},\"Recorder\":{\"ID\":\"26\",\"LoginName\":\"gm1\",\"Name\":\"总经理A\",\"Email\":\"[email protected]\"},\"Members\":[{\"ID\":\"26\",\"LoginName\":\"gm1\",\"Name\":\"总经理A\",\"Email\":\"[email protected]\"},{\"ID\":\"28\",\"LoginName\":\"gm2\",\"Name\":\"总经理B\",\"Email\":\"[email protected]\"},{\"ID\":\"29\",\"LoginName\":\"gm3\",\"Name\":\"总经理C\",\"Email\":\"\"}],\"Attendance\":[{\"ID\":\"29\",\"LoginName\":\"gm3\",\"Name\":\"总经理C\",\"Email\":\"\"}],\"Absence\":[{\"LoginName\":\"gm1\",\"Name\":\"总经理A\",\"Email\":\"[email protected]\"},{\"LoginName\":\"gm2\",\"Name\":\"总经理B\",\"Email\":\"[email protected]\"}]},\"Room\":{\"MeetingID\":\"6fa7eef5-6735-4fb1-a992-8088250be948\",\"MeetingRoomID\":\"2ebbe73b-bee4-4a9e-81c9-f8ffc6ca1149\",\"Address\":\"金融港-302会议室\",\"Date\":\"2017-09-14\",\"Text\":\"2017-09-14 14:00-15:00\",\"Value\":\"[14:00][14:30]\"},\"Attachments\":{\"Items\":[{\"Actor\":\"总经理A\",\"File\":\"1503808491.zip\",\"Url\":\"http://aaa.com/tory/MeetAttents/808491.zip\",\"Time\":\"2017-09-14 15:23\"}]},\"ID\":\"6fa7eef5-735-4f1-a992-8088250be948\",\"Type\":\"专题协调会议\",\"Title\":\"就像在8888\",\"Address\":\"金融港-302会议室\",\"Time\":\"2017-09-14 14:00-15:00\",\"Note\":\"好想到你 \",\"Status\":\"已结束\",\"Author\":\"总经理A\",\"CreatedTime\":\"2017-09-14 14:48\",\"QrCode\":\"eyJ0eXBlIjozLCJpZCI6IjZmYThOTkyLTgwODgCx5YOP5ZyoODg4OCJ9\",\"Action\":\"[VIEW][RECORDER]\"}";
private void parseJson() {
String parseString = "解析：\n";
//GsonBuilder().enableComplexMapKeySerialization().create() 处理Map的key为复杂对象
Gson gson = new GsonBuilder().enableComplexMapKeySerialization().create();
Type type = new TypeToken<com.google.gson.internal.LinkedTreeMap<String, Object>>() {
}.getType();
LinkedTreeMap<String, Object> linkedTreeMap = gson.fromJson(jsonString, type);
for (String str : linkedTreeMap.keySet()) {//一级
if (str.equals("Action")) {
String actionStr = (String) linkedTreeMap.get(str);
parseString += "Action:" + actionStr + "\n";
} else if (str.equals("Address")) {
String addressStr = (String) linkedTreeMap.get(str);
parseString += "Address:" + addressStr + "\n";
} else if (str.equals("Author")) {
String authorStr = (String) linkedTreeMap.get(str);
parseString += "Author:" + authorStr + "\n";
} else if (str.equals("CreatedTime")) {
String createdTimeStr = (String) linkedTreeMap.get(str);
parseString += "CreatedTime:" + createdTimeStr + "\n";
} else if (str.equals("ID")) {
String iDStr = (String) linkedTreeMap.get(str);
parseString += "ID:" + iDStr + "\n";
} else if (str.equals("Title")) {
String titleStr = (String) linkedTreeMap.get(str);
parseString += "Title:" + titleStr + "\n";
} else if (str.equals("Type")) {
String typeStr = (String) linkedTreeMap.get(str);
parseString += "Type:" + typeStr + "\n";
} else if (str.equals("Status")) {
String statusStr = (String) linkedTreeMap.get(str);
parseString += "Status:" + statusStr + "\n";
} else if (str.equals("QrCode")) {
String qrCodeStr = (String) linkedTreeMap.get(str);
parseString += "QrCode:" + qrCodeStr + "\n";
} else if (str.equals("Attachments")) {//二级
//1.获到LinkedTreeMap<String, List<AttachmentsItemBean>>
LinkedTreeMap<String, List<AttachmentsItemBean>> attachmentsStr = (LinkedTreeMap<String, List<AttachmentsItemBean>>) linkedTreeMap.get(str);
//2.将LinkedTreeMap转成String
String attachmentsJson = gson.toJson(attachmentsStr);
Type type1 = new TypeToken<com.google.gson.internal.LinkedTreeMap<String, List<AttachmentsItemBean>>>() {
}.getType();
//3.再将String转成LinkedTreeMap<String, List<AttachmentsItemBean>>
//为什么不能直接用上面1.LinkedTreeMap，因为它无法直接转化list里面的对象为AttachmentsItemBean
com.google.gson.internal.LinkedTreeMap<String, List<AttachmentsItemBean>> attachments = gson.fromJson(attachmentsJson, type1);
for (String attachmentsKey : attachments.keySet()) {
List<AttachmentsItemBean> attachmentsItemBeenList = attachments.get(attachmentsKey);
for (int i = 0; i < attachmentsItemBeenList.size(); i++) {
AttachmentsItemBean attachmentsItemBean = attachmentsItemBeenList.get(i);
String actor = attachmentsItemBean.getActor();
String file = attachmentsItemBean.getFile();
String url = attachmentsItemBean.getUrl();
parseString += "\t\t\t--items:" + "actor:" + actor + "\n"
+ "\t\t\t--file:" + file + "\n"
+ "\t\t\t--url:" + url + "\n";
}
}
} else if (str.equals("Members")) {//三级
//1.获到LinkedTreeMap<String,Object>
LinkedTreeMap<String, Object> LinkedTreeMapMember_s = (LinkedTreeMap<String, Object>) linkedTreeMap.get(str);
//2.将LinkedTreeMap转成String
String membersStr = gson.toJson(LinkedTreeMapMember_s);
//TypeToken类型转换
Type type2 = new TypeToken<LinkedTreeMap<String, Object>>() {
}.getType();
//3.再将String转成LinkedTreeMap<String,Object>
//为什么不能直接用上面1.LinkedTreeMap，因为它无法直接转化list里面的对象为AttachmentsItemBean
com.google.gson.internal.LinkedTreeMap<String, Object> LinkedTreeMapMembers = gson.fromJson(membersStr, type2);
for (String membersKey : LinkedTreeMapMembers.keySet()) {
if (membersKey.equals("Host")) {
LinkedTreeMap<String, String> host = (LinkedTreeMap<String, String>) LinkedTreeMapMembers.get(membersKey);
String hostJson = gson.toJson(host);
LinkedTreeMap<String, String> hostBean = gson.fromJson(hostJson, new TypeToken<com.google.gson.internal.LinkedTreeMap<String, String>>() {
}.getType());
for (String hoststr : hostBean.keySet()) {
String hostValue = hostBean.get(hoststr);
parseString += "\t\t\t----Host----" + hoststr + ":" + hostValue + "\n";
}
}
}
} else if (str.equals("Room")) {
LinkedTreeMap<String, String> roomMap_ = (LinkedTreeMap<String, String>) linkedTreeMap.get(str);
String roomStr = gson.toJson(roomMap_);
Type type3 = new TypeToken<LinkedTreeMap<String, String>>() {
}.getType();
LinkedTreeMap<String, String> roomMap = gson.fromJson(roomStr, type3);
for (String roomKey : roomMap.keySet()) {
String roomValue = roomMap.get(roomKey);
parseString += "\t\t\t--Room:" + roomKey + ":" + roomValue + "\n";
}
}
}
tv.setText(parseString);
}输出的结果：
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解析：
----Host----ID:29
----Host----LoginName:gm3
----Host----Name:总经理C
----Host----Email:
--Room:MeetingID:6fa7eef5-6735-4fb1-a992-8088250be948
--Room:MeetingRoomID:2ebbe73b-bee4-4a9e-81c9-f8ffc6ca1149
--Room:Address:金融港-302会议室
--Room:Date:2017-09-14
--Room:Text:2017-09-14 14:00-15:00
--Room:Value:[14:00][14:30]
--items:
actor:总经理A
--file:1503808491.zip
--url:http://aaa.com/tory/MeetAttents/808491.zip
ID:6fa7eef5-735-4f1-a992-8088250be948
Type:专题协调会议
Title:就像在8888
Address:金融港-302会议室
Status:已结束
Author:总经理A
CreatedTime:2017-09-14 14:48
QrCode:eyJ0eXBlIjozLCJpZCI6IjZmYThOTkyLTgwODgCx5YOP5ZyoODg4OCJ9
Action:[VIEW][RECORDER]源代码Demo下载
