flink scala 项目maven编译 （flink报错：Error: Static methods in interface require -target:jvm-1.8 已解决）

在Flink scala中使用WatermarkStrategy类中的方法maven编译时抛出以下异常

[ERROR] /Users/duzhixin/flink-dw/src/main/scala/come/bigdata/etl/FlinkEvent.scala:26: error: Static methods in interface require -target:jvm-1.8
[INFO]   val eventStream = env.fromSource(kafkaSource,  WatermarkStrategy.noWatermarks[String],"Kafka Source With Custom Watermark Strategy")

maven里加上

 
                    
                        -target:jvm-1.8
                    
 

如下

    
                org.scala-tools
                maven-scala-plugin
                2.15.2
                
                    
                        -target:jvm-1.8
                    
                
                
                    
                        
                            compile
                            testCompile
                        
                    
                
            

完整scala maven build pom.xml如下,net.alchim31.maven 里的scala maven 插件用了会有坑，注释掉了

        
        flink-dw
        
            
                org.apache.maven.plugins
                maven-compiler-plugin
                
                    1.8
                    1.8

                
            
            
                org.scala-tools
                maven-scala-plugin
                2.15.2
                
                    
                        -target:jvm-1.8
                    
                
                
                    
                        
                            compile
                            testCompile
                        
                    
                
            

            
            
            
            
                org.apache.maven.plugins
                maven-jar-plugin
                
                    target/classes/
                    
                        
                            .
                        
                    
                
            
            
                org.apache.maven.plugins
                maven-dependency-plugin
                
                    
                        copy-dependencies
                        package
                        
                            copy-dependencies
                        
                        
                            jar
                            jar
                            
                            
                                ${project.build.directory}/lib
                            
                        
                    
                
            

            
            
            
            
            
            
            
            

            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
        
    

但是如果要在idea里run，还需要单独设置 scala compiler