maven打war包字符串过长的错误怎么解决？?报错

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.2:compile (default-compile) on project rgStar: Compilation failure
[ERROR] /C:/vs/workspace_eclipse/rgStar/src/main/java/rg/contacts/filter/IptablesFilter.java:[85,38] 常量字符串过长
[ERROR] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException

报错的那行代码很简单，就是：

String json=“很长很长的一个json字符串。。。。。。”;

同样的代码，在另一个非maven工程中就可以正常打包。或者在这个maven工程下，把字符串改的很短，也可以通过。