flink常用依赖包
provided 表示不使用此依赖，如果被注释了表示使用此依赖，没有被注释表示不使用此依赖。本地调试的时候选择注释，打包到服务器上运行时如果服务器上有flink的依赖可以选择不注释，不把依赖打入jar包中。
1. flink-java 依赖包(java代码写kafka)
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| <dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-java</artifactId>
<version>${flink.version}</version>
<scope>provided</scope>
</dependency>
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2.flink steram 依赖包(java版本)
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| <dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-streaming-java_${scala.binary.version}</artifactId>
<version>${flink.version}</version>
<scope>provided</scope>
</dependency>
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3.flink steram 依赖包(scala版本)
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| <dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-streaming-scala_${scala.binary.version}</artifactId>
<version>${flink.version}</version>
<scope>provided</scope>
</dependency>
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4.flink webUI 依赖包(flink本地测试时使用)
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| <dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-runtime-web_${scala.binary.version}</artifactId>
<version>${flink.version}</version>
<scope>provided</scope>
</dependency>
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5.flink 连接依赖包
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| <dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-clients_${scala.binary.version}</artifactId>
<version>${flink.version}</version>
<scope>provided</scope>
</dependency>
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6.flink-kafka 连接依赖包
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<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-connector-kafka_2.12</artifactId>
<version>${flink.version}</version>
<scope>provided</scope>
</dependency>
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