JDBCWrite组件

组件说明

使用JDBC驱动向任意类型的关系型数据库写入数据。

计算引擎

flink

有界性

Sink: Batch

Sink: Streaming Append & Upsert Mode

组件分组

Jdbc

端口

Inport：默认端口

outport：默认端口

组件属性

名称	展示名称	默认值	允许值	是否必填	描述	例子
url	Url	""	无	是	JDBC数据库url。	jdbc:mysql://127.0.0.1:3306/dbname
driver	Driver	""	无	否	用于连接到此URL的JDBC驱动类名，如果不设置，将自动从URL中推导。	com.mysql.cj.jdbc.Driver
username	Username	""	无	否	JDBC用户名。如果指定了username和password中的任一参数，则两者必须都被指定。	root
password	Password	""	无	否	JDBC密码。	123456
tableName	DBTable	""	无	是	连接到JDBC表的名称。	test
connectionMaxRetryTimeout	ConnectionMaxRetryTimeout	60s	无	否	最大重试超时时间，以秒为单位且不应该小于 1 秒。	60s
tableDefinition	TableDefinition	""	无	是	Flink table定义。
properties	PROPERTIES	""	无	否	连接器其他配置。

JDBCWrite示例配置

{
  "flow": {
    "name": "JDBCWriteTest",
    "uuid": "1234",
    "stops": [
      {
        "uuid": "0000",
        "name": "JDBCExecuteSql1",
        "bundle": "cn.piflow.bundle.flink.jdbc.JDBCExecuteSql",
        "properties": {
          "url": "jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=utf8&serverTimezone=GMT%2B8&useSSL=false&allowMultiQueries=true",
          "username": "root",
          "password": "123456",
          "driver": "com.mysql.cj.jdbc.Driver",
          "sql": "CREATE TABLE IF NOT EXISTS `test` (`id` int DEFAULT NULL,`name` varchar(20) DEFAULT NULL,`age` int DEFAULT NULL);"
        }
      },
      {
        "uuid": "1111",
        "name": "DataGen1",
        "bundle": "cn.piflow.bundle.flink.common.DataGen",
        "properties": {
          "schema": "[{"filedName":"id","filedType":"INT","kind":"sequence","start":1,"end":10000},{"filedName":"name","filedType":"STRING","kind":"random","length":15},{"filedName":"age","filedType":"INT","kind":"random","max":100,"min":1}]",
          "count": "100",
          "ratio": "50"
        }
      },
      {
        "uuid": "2222",
        "name": "JDBCWrite1",
        "bundle": "cn.piflow.bundle.flink.jdbc.JDBCWrite",
        "properties": {
          "url": "jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=utf8&serverTimezone=GMT%2B8&useSSL=false&allowMultiQueries=true",
          "username": "root",
          "password": "123456",
          "tableName": "test",
          "tableDefinition": "{"catalogName":null,"dbname":null,"tableName":"","ifNotExists":true,"physicalColumnDefinition":[{"columnName":"id","columnType":"INT","comment":"id"},{"columnName":"name","columnType":"STRING","comment":"name"},{"columnName":"age","columnType":"INT"}],"metadataColumnDefinition":null,"computedColumnDefinition":null,"watermarkDefinition":null}",
          "properties": "{}"
        }
      },
      {
        "uuid": "3333",
        "name": "JDBCRead1",
        "bundle": "cn.piflow.bundle.flink.jdbc.JDBCRead",
        "properties": {
          "url": "jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=utf8&serverTimezone=GMT%2B8&useSSL=false&allowMultiQueries=true",
          "username": "root",
          "password": "123456",
          "tableName": "test",
          "tableDefinition": "{"catalogName":null,"dbname":null,"tableName":"","ifNotExists":true,"physicalColumnDefinition":[{"columnName":"id","columnType":"INT","comment":"id"},{"columnName":"name","columnType":"STRING","comment":"name"},{"columnName":"age","columnType":"INT"}],"metadataColumnDefinition":null,"computedColumnDefinition":null,"watermarkDefinition":null}",
          "properties": "{}"
        }
      },
      {
        "uuid": "4444",
        "name": "ShowData1",
        "bundle": "cn.piflow.bundle.flink.common.ShowData",
        "properties": {
          "showNumber": "100"
        }
      }
    ],
    "paths": [
      {
        "from": "JDBCExecuteSql1",
        "outport": "",
        "inport": "",
        "to": "DataGen1"
      },
      {
        "from": "DataGen1",
        "outport": "",
        "inport": "",
        "to": "JDBCWrite1"
      },
      {
        "from": "JDBCWrite1",
        "outport": "",
        "inport": "",
        "to": "JDBCRead1"
      },
      {
        "from": "JDBCRead1",
        "outport": "",
        "inport": "",
        "to": "ShowData1"
      }
    ]
  }
}

示例说明

1. 首先使用JDBCExecuteSql组件执行建表DDL语句，往数据库添加表；
2. 使用DataGen组件生成100条测试数据；
3. 使用JDBCWrite组件将测试数据写入到数据库；
4. 验证写入的结果，使用JDBCRead组件读取数据，并使用ShowData组件将结果打印在控制台。

演示DEMO