source 1.5 中不支持 switch 中存在字符串

﹏ヽ暗。殇╰゛Y 2022-07-13 13:12 101阅读 0赞

1、错误描述

[INFO] Scanning for projects...
    [INFO]                                                                         
    [INFO] ------------------------------------------------------------------------
    [INFO] Building Cdmp 0.0.1-SNAPSHOT
    [INFO] ------------------------------------------------------------------------
    [INFO] 
    [INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ Cdmp ---
    [WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
    [INFO] Copying 4 resources
    [INFO] 
    [INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ Cdmp ---
    [INFO] Changes detected - recompiling the module!
    [WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
    [INFO] Compiling 14 source files to F:\workspace\Cdmp\target\classes
    [INFO] -------------------------------------------------------------
    [ERROR] COMPILATION ERROR : 
    [INFO] -------------------------------------------------------------
    [ERROR] /F:/workspace/Cdmp/src/main/java/com/you/utils/SQLQuery.java:[54,47] -source 1.5 中不支持 switch 中存在字符串
      (请使用 -source 7 或更高版本以允许 switch 中存在字符串)
    [ERROR] /F:/workspace/Cdmp/src/main/java/com/you/utils/SQLQuery.java:[143,47] -source 1.5 中不支持 switch 中存在字符串
      (请使用 -source 7 或更高版本以允许 switch 中存在字符串)
    [INFO] 2 errors 
    [INFO] -------------------------------------------------------------
    [INFO] ------------------------------------------------------------------------
    [INFO] BUILD FAILURE
    [INFO] ------------------------------------------------------------------------
    [INFO] Total time: 4.059 s
    [INFO] Finished at: 2017-01-10T17:19:35+08:00
    [INFO] Final Memory: 13M/154M
    [INFO] ------------------------------------------------------------------------
    [ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project Cdmp: Compilation failure: Compilation failure:
    [ERROR] /F:/workspace/Cdmp/src/main/java/com/you/utils/SQLQuery.java:[54,47] -source 1.5 中不支持 switch 中存在字符串
    [ERROR] (请使用 -source 7 或更高版本以允许 switch 中存在字符串)
    [ERROR] /F:/workspace/Cdmp/src/main/java/com/you/utils/SQLQuery.java:[143,47] -source 1.5 中不支持 switch 中存在字符串
    [ERROR] (请使用 -source 7 或更高版本以允许 switch 中存在字符串)
    [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

2、错误原因

switch语句在jdk1.5之前可以使用byte、boolean、int、short、char，不能使用String；但是在Java程序中用String

3、解决办法

（1）如果用jdk1.5，不能使用String

（2）将jdk版本升级到1.7