table示例

目的：读csv,table进行直接输出
环境：jdk8 工具：idea2019.3

创建maven项目

引入jar包

        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-java</artifactId>
            <version>1.10.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-streaming-java_2.12</artifactId>
            <version>1.10.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-table-planner_2.12</artifactId>
            <version>1.10.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-table-api-java-bridge_2.12</artifactId>
            <version>1.10.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-csv</artifactId>
            <version>1.10.1</version>
        </dependency>

代码演示

        StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
        env.setParallelism(1);
        StreamTableEnvironment tableEnv = StreamTableEnvironment.create(env); //创建表环境
        tableEnv.connect(new FileSystem().path("绝对路径"))
                .withFormat(new Csv()) //Csv格式化工具
                .withSchema(new Schema()
                        .field("id", DataTypes.INT()) //定义字段
                        .field("name", DataTypes.STRING())
                )
                .createTemporaryTable("inputTable"); //注册表,表名为inputTablev
        Table table = tableEnv.from("inputTable");
        table.printSchema(); //打印表结构
        tableEnv.toAppendStream(table, Row.class).print();
        env.execute();

table自身简单示例.rar

结果

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
root
 |-- id: INT
 |-- name: STRING
1,wang
2,san