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修改java的默认file.encoding  

2013-09-23 11:49:26|  分类: java |  标签: |举报 |字号 订阅

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在cmd里set JAVA_TOOL_OPTIONS=-Dfile.encoding=GBK


JAVA_TOOL_OPTIONS

Since the command-line cannot always be accessed or modified, for example in embedded VMs or simply VMs launched deep within scripts, a JAVA_TOOL_OPTIONS variable is provided so that agents may be launched in these cases.

Platforms which support environment variables or other named strings, may support the JAVA_TOOL_OPTIONS variable. This variable will be broken into options at white-space boundaries. White-space characters include space, tab, carriage-return, new-line, vertical-tab, and form-feed. Sequences of white-space characters are considered equivalent to a single white-space character. No white-space is included in the options unless quoted. Quoting is as follows:
  • All characters enclosed between a pair of single quote marks (''), except a single quote, are quoted.
  • Double quote characters have no special meaning inside a pair of single quote marks.
  • All characters enclosed between a pair of double quote marks (""), except a double quote, are quoted.
  • Single quote characters have no special meaning inside a pair of double quote marks.
  • A quoted part can start or end anywhere in the variable.
  • White-space characters have no special meaning when quoted -- they are included in the option like any other character and do not mark white-space boundaries.
  • The pair of quote marks is not included in the option.
JNI_CreateJavaVM (in the JNI Invocation API) will prepend these options to the options supplied in its JavaVMInitArgs argument. Platforms may disable this feature in cases where security is a concern; for example, the Reference Implementation disables this feature on Unix systems when the effective user or group ID differs from the real ID. This feature is intended to support the initialization of tools -- specifically including the launching of native or Java programming language agents. Multiple tools may wish to use this feature, so the variable should not be overwritten, instead, options should be appended to the variable. Note that since the variable is processed at the time of the JNI Invocation API create VM call, options processed by a launcher (e.g., VM selection options) will not be handled.
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