Json変換利器Gsonの-実際開発中の特殊需要処理(手動解析-Type Token処理)

開発中に遭遇した複雑なJSONはType Tokenで処理します.http://blog.csdn.net/jason_996/article/details/78039799)
処理方法:
1,まずインターフェースを返すJSONは、gson.tojson(map)方法で、Linked TreeMapオブジェクトをStringに変換します.
2,gson.from json(string,type)方法でSteringをLinked TreeMapに変えます.Type=new Type Token(){}.getType;
3,Linked TreeMapfを巡回します.
下記に直接コードを書きます.(例ではデータの内容はデモと違っていますが、データ構造は同じです.会社の情報を知らせないために)

 private String jsonString = "{\"Members\":{\"Owner\":{\"ID\":\"26\",\"LoginName\":\"gm1\",\"Name\":\"   A\",\"Email\":\"[email protected]\"},\"Host\":{\"ID\":\"29\",\"LoginName\":\"gm3\",\"Name\":\"   C\",\"Email\":\"\"},\"Recorder\":{\"ID\":\"26\",\"LoginName\":\"gm1\",\"Name\":\"   A\",\"Email\":\"[email protected]\"},\"Members\":[{\"ID\":\"26\",\"LoginName\":\"gm1\",\"Name\":\"   A\",\"Email\":\"[email protected]\"},{\"ID\":\"28\",\"LoginName\":\"gm2\",\"Name\":\"   B\",\"Email\":\"[email protected]\"},{\"ID\":\"29\",\"LoginName\":\"gm3\",\"Name\":\"   C\",\"Email\":\"\"}],\"Attendance\":[{\"ID\":\"29\",\"LoginName\":\"gm3\",\"Name\":\"   C\",\"Email\":\"\"}],\"Absence\":[{\"LoginName\":\"gm1\",\"Name\":\"   A\",\"Email\":\"[email protected]\"},{\"LoginName\":\"gm2\",\"Name\":\"   B\",\"Email\":\"[email protected]\"}]},\"Room\":{\"MeetingID\":\"6fa7eef5-6735-4fb1-a992-8088250be948\",\"MeetingRoomID\":\"2ebbe73b-bee4-4a9e-81c9-f8ffc6ca1149\",\"Address\":\"   -302   \",\"Date\":\"2017-09-14\",\"Text\":\"2017-09-14 14:00-15:00\",\"Value\":\"[14:00][14:30]\"},\"Attachments\":{\"Items\":[{\"Actor\":\"   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\":\"      \",\"Title\":\"   8888\",\"Address\":\"   -302   \",\"Time\":\"2017-09-14 14:00-15:00\",\"Note\":\"     \",\"Status\":\"   \",\"Author\":\"   A\",\"CreatedTime\":\"2017-09-14 14:48\",\"QrCode\":\"eyJ0eXBlIjozLCJpZCI6IjZmYThOTkyLTgwODgCx5YOP5ZyoODg4OCJ9\",\"Action\":\"[VIEW][RECORDER]\"}";
    

解析コード:(jsonのレベルが違うデータ構造解析だけをして、残りは自分で勉強中に完成することができます.)

private void parseJson() {

        String parseString = "  ：
";
        //GsonBuilder().enableComplexMapKeySerialization().create()   Map key     
        Gson gson = new GsonBuilder().enableComplexMapKeySerialization().create();
        Type type = new TypeToken>() {
        }.getType();
        LinkedTreeMap linkedTreeMap = gson.fromJson(jsonString, type);
        for (String str : linkedTreeMap.keySet()) {//  
            if (str.equals("Action")) {
                String actionStr = (String) linkedTreeMap.get(str);
                parseString += "Action:" + actionStr + "
";
            } else if (str.equals("Address")) {
                String addressStr = (String) linkedTreeMap.get(str);
                parseString += "Address:" + addressStr + "
";
            } else if (str.equals("Author")) {
                String authorStr = (String) linkedTreeMap.get(str);
                parseString += "Author:" + authorStr + "
";
            } else if (str.equals("CreatedTime")) {
                String createdTimeStr = (String) linkedTreeMap.get(str);
                parseString += "CreatedTime:" + createdTimeStr + "
";
            } else if (str.equals("ID")) {
                String iDStr = (String) linkedTreeMap.get(str);
                parseString += "ID:" + iDStr + "
";
            } else if (str.equals("Title")) {
                String titleStr = (String) linkedTreeMap.get(str);
                parseString += "Title:" + titleStr + "
";
            } else if (str.equals("Type")) {
                String typeStr = (String) linkedTreeMap.get(str);
                parseString += "Type:" + typeStr + "
";
            } else if (str.equals("Status")) {
                String statusStr = (String) linkedTreeMap.get(str);
                parseString += "Status:" + statusStr + "
";
            } else if (str.equals("QrCode")) {
                String qrCodeStr = (String) linkedTreeMap.get(str);
                parseString += "QrCode:" + qrCodeStr + "
";
            } else if (str.equals("Attachments")) {//  
                //1.  LinkedTreeMap>
                LinkedTreeMap> attachmentsStr = (LinkedTreeMap>) linkedTreeMap.get(str);
                //2. LinkedTreeMap  String
                String attachmentsJson = gson.toJson(attachmentsStr);
                Type type1 = new TypeToken>>() {
                }.getType();
                //3.  String  LinkedTreeMap>
                //          1.LinkedTreeMap，         list      AttachmentsItemBean
                com.google.gson.internal.LinkedTreeMap> attachments = gson.fromJson(attachmentsJson, type1);
                for (String attachmentsKey : attachments.keySet()) {
                    List 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 + "
"
                                + "\t\t\t--file:" + file + "
"
                                + "\t\t\t--url:" + url + "
";
                    }
                }

            } else if (str.equals("Members")) {//  
                //1.  LinkedTreeMap
                LinkedTreeMap LinkedTreeMapMember_s = (LinkedTreeMap) linkedTreeMap.get(str);
                //2. LinkedTreeMap  String
                String membersStr = gson.toJson(LinkedTreeMapMember_s);
                //TypeToken    
                Type type2 = new TypeToken>() {
                }.getType();
                //3.  String  LinkedTreeMap
                //          1.LinkedTreeMap，         list      AttachmentsItemBean
                com.google.gson.internal.LinkedTreeMap LinkedTreeMapMembers = gson.fromJson(membersStr, type2);
                for (String membersKey : LinkedTreeMapMembers.keySet()) {
                    if (membersKey.equals("Host")) {
                        LinkedTreeMap host = (LinkedTreeMap) LinkedTreeMapMembers.get(membersKey);
                        String hostJson = gson.toJson(host);
                        LinkedTreeMap hostBean = gson.fromJson(hostJson, new TypeToken>() {
                        }.getType());
                        for (String hoststr : hostBean.keySet()) {
                            String hostValue = hostBean.get(hoststr);
                            parseString += "\t\t\t----Host----" + hoststr + ":" + hostValue + "
";
                        }
                    }
                }
            } else if (str.equals("Room")) {
                LinkedTreeMap roomMap_ = (LinkedTreeMap) linkedTreeMap.get(str);
                String roomStr = gson.toJson(roomMap_);
                Type type3 = new TypeToken>() {
                }.getType();
                LinkedTreeMap roomMap = gson.fromJson(roomStr, type3);
                for (String roomKey : roomMap.keySet()) {
                    String roomValue = roomMap.get(roomKey);
                    parseString += "\t\t\t--Room:" + roomKey + ":" + roomValue + "
";
                }
            }
        }
        tv.setText(parseString);
    }

出力の結果:

  ：
    ----Host----ID:29
    ----Host----LoginName:gm3
    ----Host----Name:   C
    ----Host----Email:
    --Room:MeetingID:6fa7eef5-6735-4fb1-a992-8088250be948
    --Room:MeetingRoomID:2ebbe73b-bee4-4a9e-81c9-f8ffc6ca1149
    --Room:Address:   -302   
    --Room:Date:2017-09-14
    --Room:Text:2017-09-14 14:00-15:00
    --Room:Value:[14:00][14:30]
    --items:
        actor:   A
        --file:1503808491.zip
        --url:http://aaa.com/tory/MeetAttents/808491.zip
    ID:6fa7eef5-735-4f1-a992-8088250be948
    Type:      
    Title:   8888
    Address:   -302   
    Status:   
    Author:   A
    CreatedTime:2017-09-14 14:48
    QrCode:eyJ0eXBlIjozLCJpZCI6IjZmYThOTkyLTgwODgCx5YOP5ZyoODg4OCJ9
    Action:[VIEW][RECORDER]

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