德升武汉网站建设百度指数的各项功能
在用maven搭建flink开发环境时（scala版），pom文件中已写好了所需的依赖，等下载完jar包后编写flink程序，发现无法引入所需的包，即出现下图情况
我的pom文件如下：
<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/maven-v4_0_0.xsd"><modelVersion>4.0.0</modelVersion><groupId>com.boya</groupId><artifactId>myFlink</artifactId><version>1.0-SNAPSHOT</version><inceptionYear>2008</inceptionYear><properties><scala.version>2.11.4</scala.version></properties><dependencies><dependency><groupId>org.apache.flink</groupId><artifactId>flink-core</artifactId><version>1.4.0</version></dependency><dependency><groupId>org.apache.flink</groupId><artifactId>flink-streaming-scala_2.11</artifactId><version>1.4.0</version></dependency><dependency><groupId>org.apache.flink</groupId><artifactId>flink-java</artifactId><version>1.4.0</version></dependency><dependency><groupId>org.apache.flink</groupId><artifactId>flink-scala_2.11</artifactId><version>1.4.0</version></dependency><dependency><groupId>org.apache.flink</groupId><artifactId>flink-clients_2.11</artifactId><version>1.4.0</version></dependency><dependency><groupId>org.scala-lang</groupId><artifactId>scala-reflect</artifactId><version>2.11.4</version></dependency><dependency><groupId>org.scala-lang</groupId><artifactId>scala-compiler</artifactId><version>2.11.4</version></dependency><dependency><groupId>org.scala-lang</groupId><artifactId>scala-library</artifactId><version>2.11.4</version></dependency><dependency><groupId>org.apache.flink</groupId><artifactId>flink-table_2.11</artifactId><version>1.4.0</version></dependency><dependency><groupId>org.apache.flink</groupId><artifactId>flink-connector-kafka-0.8_2.11</artifactId><version>1.4.0</version></dependency><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.15</version></dependency></dependencies><build><plugins><plugin><groupId>org.scala-tools</groupId><artifactId>maven-scala-plugin</artifactId><version>2.15.2</version><executions><execution><goals><goal>compile</goal><goal>testCompile</goal></goals></execution></executions></plugin><plugin><artifactId>maven-compiler-plugin</artifactId><version>3.6.0</version><configuration><source>1.8</source><target>1.8</target></configuration></plugin><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-assembly-plugin</artifactId><version>2.3</version><configuration><descriptorRefs><descriptorRef>jar-with-dependencies</descriptorRef></descriptorRefs></configuration></plugin><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-surefire-plugin</artifactId><version>2.19</version><configuration><skip>true</skip></configuration></plugin></plugins><defaultGoal>compile</defaultGoal></build>
</project>尝试了无数次reimport，重启，依然没有效，最后在flink官网上下载了pom文件中对应版本的flink即 flink-1.4.0-bin-hadoop26-scala_2.11.tgz ，然后为project添加Libraries，具体操作如下：
添加Flink,操作为在加号弹出的小窗口中选择java
在弹出的对话框里进入flink目录内，选择添加opt和lib目录
待project重新编译后，问题解决!
