Flink-Kafka作業提交服務器遇到問題java.lang.ClassNotFoundException: org.apache.flink.streaming.connectors.kafka.KafkaSerializationSchema

java.lang.ClassNotFoundException: org.apache.flink.streaming.connectors.kafka.KafkaSerializationSchema

Flink從Kafka中讀取數據，本地運行時一切正常，但打包jar提交服務器時一直無法運行，日志報錯 java.lang.ClassNotFoundException: org.apache.flink.streaming.connectors.kafka.KafkaSerializationSchema，

猜測是對應的connector jar包沒有引入，重啟Flink無效，重新打包無效，懷疑少加了build但是搜了maven倉庫仍然不會改。

百度發現Flink社區及StackOverflow都有人提出類似的問題，但是都看不太懂，最后還是從這一篇找到解決方案，博主說的沒有特別清楚：https://www.jianshu.com/p/f99b6635fbc5

在pom.xml加入如下代碼，其中“ site.buzhou.source.TestKafka ” 換為你的運行類。

 <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-shade-plugin</artifactId>
                <version>3.0.0</version>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>shade</goal>
                        </goals>
                        <configuration>
                            <artifactSet>
                                <excludes>
                                    <exclude>com.google.code.findbugs:jsr305</exclude>
                                    <exclude>org.slf4j:*</exclude>
                                    <exclude>log4j:*</exclude>
                                </excludes>
                            </artifactSet>
                            <filters>
                                <filter>
                                    <!-- Do not copy the signatures in the META-INF folder.
                                    Otherwise, this might cause SecurityExceptions when using the JAR. -->
                                    <artifact>*:*</artifact>
                                    <excludes>
                                        <exclude>META-INF/*.SF</exclude>
                                        <exclude>META-INF/*.DSA</exclude>
                                        <exclude>META-INF/*.RSA</exclude>
                                    </excludes>
                                </filter>
                            </filters>
                            <transformers>
                                <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                    <mainClass>site.buzhou.source.TestKafka</mainClass>
                                </transformer>
                            </transformers>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>