idea编译StackOverflowError问题

　

stackoverflowerror

ERROR:scalac: 

while compiling: E:\XXXXXXXXX.scala

during phase: erasure

library version: version 2.10.4

compiler version: version 2.10.4

reconstructed args: -classpath F:\BaiduNetdiskDownload\jdk1.7.0_55\jre\lib\charsets.jar;F:\BaiduNetdiskDownload\jdk1.7.0_55\jre\lib\deploy.jar;F:\BaiduNetdiskDownload\jdk1.7.0_55\jre\lib\ext\access-bridge-64.jar;.................

last tree to typer: TypeTree(class String)

      symbol: class String in package lang (flags: final <java>)

 symbol definition: final class String extends serializable with Comparable[String] with Charsequence

         tpe: String

symbol owners: class String -> package lang

context owners: method payBase -> object XXX-> package revenue

== Enclosing template or block ==

APPly( // def <init>(parts: Seq[String]): StringContext in class StringContext

new StringContext."<init>" // def <init>(parts: Seq[String]): StringContext in class StringContext

Apply( // implicit def wrapRefArray[T <: Object](xs: Array[T]): scala.collection.mutable.WrappedArray[T] in class LowpriorityImplicits

scala.this."Predef"."wrapRefArray" // implicit def wrapRefArray[T <: Object](xs: Array[T]): scala.collection.mutable.WrappedArray[T] in class LowPriorityImplicits

ArrayValue(

<tpt> // tree.tpe=String

List(

"INSERT OVERWRITE TABLE XXXXXXXXX PARTITION(STATDATE,datasource)                                                                                                        "

)

)

)

)

== Expanded type of tree ==

TypeRef(

typesymbol(

final class String extends Serializable with Comparable[String] with CharSequence

  

)

)

uncaught exception during compilation: java.lang.stackoverflowerror

java7开始，字符串常量池被移到了Heap空间，Heap空间的大小只受制于机器的真实内存大小，因此，在Java7下使用String.intern()能更有效地减少重复String对象对内存的占用。

参考：https://blog.csdn.net/u014600432/article/details/50983741

参考：https://blog.csdn.net/kl28978113/article/details/53031710

解决方式：

<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>
        <configuration>
            <scalaVersion>${scala.version}</scalaVersion>
            <args>
                <arg>-target:jvm-1.7</arg>
            </args>
            <!-- jdk7开始字符串常量池被移到了Heap空间，字符串太多要注意uncaught exception during compilation: java.lang.StackOverflowError -->
            <jvmArgs>
                <jvmArg>-Xss20480K</jvmArg>
            </jvmArgs>
        </configuration>
    </plugin>

然后这里可能出现Java和Scala混用不知道先编译谁的问题，参考https://davidb.github.io/scala-maven-plugin/example_java.html 我试了没成功，然后我直接将一堆字符串+号连接的换成了三引号加

stripMargin作为一个字符串就好了，也不用插件了；

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