FlinkSQL的出现,极大程度上降低了Flink的编程门槛,更加容易理解和掌握使用。今天将自己的笔记分享出来,希望能帮助在这方面有需要的朋友。
(1)首先引入POM依赖:
1.13.1 2.12 1.7.30 org.apache.flink flink-java ${flink.version} org.apache.flink flink-streaming-java_${scala.binary.version} ${flink.version} org.apache.flink flink-clients_${scala.binary.version} ${flink.version} org.apache.flink flink-table-api-java-bridge_${scala.binary.version} ${flink.version} org.apache.flink flink-connector-jdbc_${scala.binary.version} ${flink.version} org.apache.flink flink-table-planner-blink_${scala.binary.version} ${flink.version} org.apache.flink flink-streaming-scala_${scala.binary.version} ${flink.version} org.apache.flink flink-table-common ${flink.version} org.apache.flink flink-json ${flink.version} com.fasterxml.jackson.core jackson-databind 2.12.0 mysql mysql-connector-java 8.0.16 com.alibaba fastjson 1.2.66
(2)编写代码
public static void main(String[] args) throws Exception { final StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment(); EnvironmentSettings settings = EnvironmentSettings.newInstance() .inStreamingMode() //.useOldPlanner() // flink .useBlinkPlanner() // blink .build(); StreamTableEnvironment ste = StreamTableEnvironment.create(env, settings); String ddl = "CREATE TABLE flinksinksds(r
" + "componentname STRING,r
" + "componentcount INT,r
" + "componentsum INTr
" + ") WITH(r
" + "'connector.type'='jdbc',r
" + "'connector.driver' = 'com.mysql.cj.jdbc.Driver'," + "'connector.url'='jdbc:mysql://localhost:3306/testdb?characterEncoding=UTF-8&useUnicode=true&useSSL=false&tinyInt1isBit=false&allowPublicKeyRetrieval=true&serverTimezone=Asia/Shanghai',r
" + "'connector.table'='flinksink',r
" + "'connector.username'='root',r
" + "'connector.password'='root',r
" + "'connector.write.flush.max-rows'='1'r
" + ")"; System.err.println(ddl); ste.executeSql(ddl); String insert = "insert into flinksinksds(componentname,componentcount,componentsum)" + "values('1024', 1 , 2 )"; ste.executeSql(insert); env.execute(); System.exit(0);}
(3)执行结果:
页面更新:2024-05-04
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