4.0.0 org.apache.doris doris-demo pom 1.0-SNAPSHOT flink-demo spark-demo stream-load-demo spring-jdbc-demo doris-demo http://www.example.com UTF-8 1.8 1.8 org.apache.maven.plugins maven-assembly-plugin 3.3.0 maven-plugin mysql mysql-connector-java 5.1.41 org.apache.httpcomponents httpclient 4.5.13