【json的处理】四、json-flattener的处理

目前处理json的方法有很多，这里主要总结四种方法

1. Gson方式处理json 【json的处理】一、Gson处理

2. FastJson方式处理json 【json的处理】三、FastJson的处理

3. Jackson方式处理json 【json的处理】二、Jackson的处理

4. json-flattener方式处理json 【json的处理】四、json-flattener的处理

本文主要介绍json-flattener的方式

github地址：https://github.com/wnameless/json-flattener

前言

下面主要通过几个方面来介绍json-flattener：

1. 扁平化处理

2. 去扁平化

引入依赖

<!--依赖 -->
<dependency>
     <groupId>com.github.wnameless.json</groupId>
     <artifactId>json-flattener</artifactId>
     <version>0.8.1</version>
 </dependency>

一、扁平化处理

//json
{
    "ip":"192.168.100.100",
    "type":"0",
    "index":"3",
    "timestamp":"1555317936",
    "value":
    [
        {
            "cpuIndex":"0",
            "cpuName":"Intel(R) Xeon(R) CPUE5-2620 v4",
            "cpuCores":"8",
            "cpuFreq":"2.10GHz",
            "cpuRate":"0.85"
        },
        {
            "cpuIndex":"1",
            "cpuName":"Intel(R) Xeon(R) CPUE5-2620 v4",
            "cpuCores":"8",
            "cpuFreq":"2.10GHz",
            "cpuRate":"2.05"
        }
    ]
}

//测试类
String jsonStr = "上面的json";
JSONObject jsonObj = JSONObject.parseObject(jsonStr);
Map<String, Object> flatMap = JsonFlattener.flattenAsMap(jsonObj.toString());
//将 . 改成 , 
//Map<String, Object> flatMap = new JsonFlattener(jsonObj.toString()).withSeparator(',').flattenAsMap();
for (Map.Entry<String, Object> entry : flatMap.entrySet()) {
    System.out.println(entry.getKey() + " : " + entry.getValue());
}

//效果
ip : 192.168.100.100
index : 3
type : 0
value[0].cpuCores : 8
value[0].cpuIndex : 0
value[0].cpuRate : 0.85
value[0].cpuFreq : 2.10GHz
value[0].cpuName : Intel(R) Xeon(R) CPUE5-2620 v4
value[1].cpuCores : 8
value[1].cpuIndex : 1
value[1].cpuRate : 2.05
value[1].cpuFreq : 2.10GHz
value[1].cpuName : Intel(R) Xeon(R) CPUE5-2620 v4
timestamp : 1555317936
#--------------------------------------------------------------------------------
ip : 192.168.100.100
index : 3
type : 0
value[0],cpuCores : 8
value[0],cpuIndex : 0
value[0],cpuRate : 0.85
value[0],cpuFreq : 2.10GHz
value[0],cpuName : Intel(R) Xeon(R) CPUE5-2620 v4
value[1],cpuCores : 8
value[1],cpuIndex : 1
value[1],cpuRate : 2.05
value[1],cpuFreq : 2.10GHz
value[1],cpuName : Intel(R) Xeon(R) CPUE5-2620 v4
timestamp : 1555317936

二、去扁平化

//json
{
  "registro.status": "1",
  "registro.nome": "SUELI",
  "registro.sobrenome": "BERNARDO BRITO",
  "registro.telefone": "1100128500",
  "registro.endereco": "RUA SIVI",
  "registro.numero": "20",
  "registro.complemento": "CS FR",
  "registro.bairro": "CIDADE INDUSTRIAL SATELITE DE SAO PAULO",
  "registro.cep": "07222190",
  "registro.cidade": "GUARULHOS",
  "registro.uf": "SP",
  "registro.cpfcnpj": "12345678900",
  "registro.mae": "TERESINHA",
  "registro.sobrenomemae": "DE FATIMA BERNARDO",
  "registro.nasc": "1995-08-05",
  "registro.protocolo": "320978777"
}

//测试代码
String unflattenJson = JsonUnflattener.unflatten(jsonStr);

//结果
{
  "registro": {
    "status": "1",
    "nome": "SUELI",
    "sobrenome": "BERNARDO BRITO",
    "telefone": "1100128500",
    "endereco": "RUA SIVI",
    "numero": "20",
    "complemento": "CS FR",
    "bairro": "CIDADE INDUSTRIAL SATELITE DE SAO PAULO",
    "cep": "07222190",
    "cidade": "GUARULHOS",
    "uf": "SP",
    "cpfcnpj": "12345678900",
    "mae": "TERESINHA",
    "sobrenomemae": "DE FATIMA BERNARDO",
    "nasc": "1995-08-05",
    "protocolo": "320978777"
  }
}

参考：

1. https://blog.csdn.net/u012510831/article/details/104954425

2. https://blog.csdn.net/jx2956/article/details/86700686

持续更新！！！