【问题标题】：Spring data with Elasticsearch 6.4.2 is not working for Java hashmap properties带有 Elasticsearch 6.4.2 的 Spring 数据不适用于 Java hashmap 属性
【发布时间】：2019-07-05 12:15:49
【问题描述】：

使用@Document 将 java 对象映射到 elasticSearch 文档

@Document(createIndex = true, indexName = "djacency", type = "djacency") 公共类 djacencyDoc {

@Field(type = FieldType.Object)
    private Agent agent1 = null;
}

保存前设置的类值：

类代理{ 道具6：480 prop7: 类 FAttributes7{ attr1Name : [类 FAttributes { dscp：12 发送间隔：100 填充：425 }, 类 FAttributes { dscp：14 发送间隔：100 填充：425 }] } listIps：类 RProperties { attProperties: {PRASANTA3=class AttProperty { ip: 192.168.57.39 经纪人：普拉桑塔1 dstId：普拉桑塔2 }} } ip: 192.168.57.53 ip1: 255.255.255.78 ip4: 192.168.57.187 测试ID：空克兰：0 优先级：0 编号：p1 } 连续性：空网络电话：空 netqr：空 }

 Here "listIps" value is "RProperties" which is a Java Hashmap ,Before save it has some value but While saving into elasticsearch RProperties value is saved as null.

保存后获取类值：

Agent: class Agent2 {
        prop1: true
        prop2: 50000
        prop3: 50000
        prop4: 300
        prop5: null
        prop6: 480
        prop7: class Agent3 {
            attr1Name : [class FAttributes {
                dscp: 12
                txInterval: 100
                padding: 425
            }, class FAttributes {
                dscp: 14
                txInterval: 100
                padding: 425
            }]
        }
        listIps: class RProperties {
            RProperties: null
        }
        iIp: 192.168.57.53
        sunet: 255.255.255.78
        gway: 192.168.57.187
        testId: null
        van: 0
        vriority: 0
        phyId: p1
    }
    sContinuity: null
    ip: null
    nQuality: null
}

Why for hashmap properties  "RProperties" elasticseach saves null ? The above document is saving correctly when i am using postman or curl, But from my SpringBoot Application using Spring DATA it is not working .

【问题讨论】：

标签： java elasticsearch mapping

【解决方案1】：

listIps:class RProperties{  
   attProperties:{  
      PRASANTA3=class AttProperty{  
         Ip:192.168.57.39;
         Agent:PRASANTA1 ;
         dstId:PRASANTA2
      }
   }
}

The above code should be like below format,

listIps:class RProperties extends HashMap<String,AttProperty>{       
      "PRASANTA3"=class AttProperty{  
         Ip:192.168.57.39;
         Agent:PRASANTA1 ;
         dstId:PRASANTA2
      }
}


Here RProperties class should extends from Hashmap , instead of RProperties contains one more class (AttProperties) which again contains the hashmap properties.

Here RProperties is a HashMap which contains key("PRASANTA3"),value(AttProperty class values) .

【讨论】：