Question

我正在尝试学习elasticsearch并将其连接到MySQL数据库。如果我自己使用elasticsearch，一切正常，但是当试图从数据库中获取数据时，它似乎不能正常工作。我是一个真正的新手在弹性搜索和河流与jdbc，所以我真的无法描述我的问题比这更明确。

为了创建河流，我使用了以下命令：

curl -XPUT 'localhost:9200/customertest/customer/_meta' -d '{
    "type" : "jdbc",
    "jdbc" : {
        "url" : "jdbc:mysql://localhost:3306/database",
        "user" : "root",
        "password" : "root",
        "sql" : "select * from customers"
    }
}'

运行时：

curl -XGET 'localhost:9200/customertest/_search?pretty&q=*'

我得到以下答案：

{
  "took" : 2,
  "timed_out" : false,
  "_shards" : {
    "total" : 5,
    "successful" : 5,
    "failed" : 0
  },
  "hits" : {
    "total" : 1,
    "max_score" : 1.0,
    "hits" : [ {
      "_index" : "customertest",
      "_type" : "customer",
      "_id" : "_meta",
      "_score" : 1.0,
      "_source":{
    "type" : "jdbc",
    "jdbc" : {
        "url" : "jdbc:mysql://localhost:3306/database",
        "user" : "root",
        "password" : "root",
        "sql" : "select * from customers"
    }
}
    } ]
  }
}

有什么想法吗？

Answer 1

根据docs？

，您似乎没有进行连接

不应该是（假设你实际上有一个DB实际上叫database）：

curl -XPUT 'localhost:9200/_river/customer/_meta' -d '{
    "type" : "jdbc",
    "jdbc" : {
        "url" : "jdbc:mysql://localhost:3306/database",
        "user" : "root",
        "password" : "root",
        "sql" : "select * from customers"
    }
}

然后尝试

curl 'localhost:9200/jdbc/_search'

看你是否取得了任何成就。

Answer 2

那做了些什么现在，如果我跑：

localhost:9200/jdbc/_search

如果我跑了，我什么也得不到：

localhost:9200/_river/customer/_search

我明白了：

{
"took": 1,
"timed_out": false,
"_shards": {
    "total": 1,
    "successful": 1,
    "failed": 0
},
"hits": {
    "total": 2,
    "max_score": 1,
    "hits": [
        {
            "_index": "_river",
            "_type": "customer",
            "_id": "_meta",
            "_score": 1,
            "_source": {
                "type": "jdbc",
                "jdbc": {
                    "url": "jdbc:mysql://localhost:3306/verendus",
                    "user": "root",
                    "password": "root",
                    "sql": "select * from customers"
                }
            }
        },
        {
            "_index": "_river",
            "_type": "customer",
            "_id": "_status",
            "_score": 1,
            "_source": {
                "error": "CreationException[Guice creation errors:\n\n1) Error injecting constructor, java.lang.NoSuchMethodError: org.xbib.elasticsearch.river.jdbc.RiverSource.url(Ljava/lang/String;)Lorg/xbib/elasticsearch/river/jdbc/RiverSource;\n  at org.xbib.elasticsearch.river.jdbc.JDBCRiver.<init>(Unknown Source)\n  while locating org.xbib.elasticsearch.river.jdbc.JDBCRiver\n  while locating org.elasticsearch.river.River\n\n1 error]; nested: NoSuchMethodError[org.xbib.elasticsearch.river.jdbc.RiverSource.url(Ljava/lang/String;)Lorg/xbib/elasticsearch/river/jdbc/RiverSource;]; ",
                "node": {
                    "id": "kMJkU2bvSZuSkbj86u6ziA",
                    "name": "Black Dragon",
                    "transport_address": "inet[/127.0.0.1:9300]"
                }
            }
        }
    ]
}

}

从jdbc elasticsearch河搜索

2 个答案: