说明

在开发测试时，想要看到job的执行计划和运行时的一些信息，就需要在IEDA或Eclipse中本地运行时，启动webui管理服务

添加依赖

<!-- web ui的依赖-->
<dependency>
    <groupId>org.apache.flink</groupId>
    <artifactId>flink-runtime-web_${scala.binary.version}</artifactId>
    <version>${flink.version}</version>
    <scope>provided</scope>
</dependency>

完整配置

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <artifactId>kafka2flink</artifactId>
    <version>1.0-SNAPSHOT</version>

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    <flink.version>1.12.0</flink.version>
</properties>

<dependencies>
    <!--java-->
    <dependency>
        <groupId>org.apache.flink</groupId>
        <artifactId>flink-java</artifactId>
        <version>${flink.version}</version>
    </dependency>
    <dependency>
        <groupId>org.apache.flink</groupId>
        <artifactId>flink-streaming-java_2.12</artifactId>
        <version>${flink.version}</version>
    </dependency>
    <dependency>
        <groupId>org.apache.flink</groupId>
        <artifactId>flink-clients_2.12</artifactId>
        <version>${flink.version}</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>1.7.30</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-log4j12</artifactId>
        <version>1.7.30</version>
    </dependency>
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.17</version>
    </dependency>
    <!-- kafka Dependency -->
    <dependency>
        <groupId>org.apache.flink</groupId>
        <artifactId>flink-connector-kafka_2.12</artifactId>
        <version>${flink.version}</version>
    </dependency>
    <dependency>
        <groupId>org.apache.flink</groupId>
        <artifactId>flink-runtime-web_2.12</artifactId>
        <version>${flink.version}</version>
    </dependency>
</dependencies>
</project>

idea运行配置（关键）

按照下图点击：

按照下图勾选，包含 provided 的依赖，否则不生效：

java代码

创建环境启动webui，默认端口号是 8081

Configuration configuration = new Configuration();
StreamExecutionEnvironment env = StreamExecutionEnvironment.createLocalEnvironmentWithWebUI(configuration);

修改端口号

如果想改变端口号，可以在configuration 中配置：

Configuration configuration = new Configuration();
configuration.setInteger(“rest.port”, 8082);

StreamExecutionEnvironment env = StreamExecutionEnvironment.createLocalEnvironmentWithWebUI(configuration);

完整代码

import org.apache.flink.configuration.Configuration;
import org.apache.flink.streaming.api.datastream.DataStreamSource;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;

public class FromCollectionDemo {
    public static void main(String[] args) throws Exception {
        StreamExecutionEnvironment env = StreamExecutionEnvironment.createLocalEnvironmentWithWebUI(new Configuration());

        DataStreamSource<String> localhost = env.socketTextStream("localhost", 9999);

        localhost.print();

        env.execute();

    }
}

访问 webui

在IDEA中运行程序，然后在浏览器访问 http://localhost:8081

参考

https://www.cnblogs.com/weiyiming007/p/15850073.html

原文出处：/show_1IX44V9fRMan.html