Idea创建HugeGraph属性报ExistedException

一、错误内容

java.lang.reflect.UndeclaredThrowableException
    at com.sun.proxy.$Proxy27.create(Unknown Source)
    at com.meiyijia.pd.flink.hugeGraph.SingleExample.main(SingleExample.java:26)
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at com.baidu.hugegraph.structure.schema.BuilderProxy.invoke(BuilderProxy.java:56)
    ... 2 more
Caused by: class com.baidu.hugegraph.exception.ExistedException: The property key 'name2' has existed
    at com.baidu.hugegraph.exception.ServerException.fromResponse(ServerException.java:47)
    at com.baidu.hugegraph.client.RestClient.checkStatus(RestClient.java:93)
    at com.baidu.hugegraph.rest.AbstractRestClient.post(AbstractRestClient.java:198)
    at com.baidu.hugegraph.rest.AbstractRestClient.post(AbstractRestClient.java:172)
    at com.baidu.hugegraph.api.schema.PropertyKeyAPI.create(PropertyKeyAPI.java:46)
    at com.baidu.hugegraph.driver.SchemaManager.addPropertyKey(SchemaManager.java:79)
    at com.baidu.hugegraph.structure.schema.PropertyKey$BuilderImpl.create(PropertyKey.java:142)
    at com.baidu.hugegraph.structure.schema.PropertyKey$BuilderImpl.create(PropertyKey.java:125)
    ... 7 more

二、错误场景

　　Idea中创建属性Key，若不存在则创建

public static void main(String[] args) throws IOException {
        HugeClient hugeClient = null;
        try {
            // If connect failed will throw a exception.
            hugeClient = HugeClient.builder("http://192.168.66.83:8080",
                    "meta_hugegraph")
                    .build();

            SchemaManager schema = hugeClient.schema();
            schema.propertyKey("name").asText().valueSet().ifNotExist().create();
        }catch (Exception e){
            e.printStackTrace();
        }finally {
            hugeClient.close();
        }
    }

三、解决

　　首先登录Hubble，连接图后，查看属性Key，发现name的基数是single，而我们创建是却指定的基数是set集合，就是使用了ifNotExist()，程序也还是会报错

 

 　　解决：将set集合改为single即可，使二者类型一致

schema.propertyKey("name").asText().valueSingle().ifNotExist().create();