摘要：
%AllUsersProfile%
%USERPROFILE%
%HOMEPATH%
%systemdrive%
%HOMEDRIVE%
%windir%
%SystemRoot%
%Temp%
%Tmp%
%ProgramFiles%
%commonprogramfiles%
%APPDATA%
%ComSpec%
%LOGONSERVER% 阅读全文
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摘要：
%AllUsersProfile%
%USERPROFILE%
%HOMEPATH%
%systemdrive%
%HOMEDRIVE%
%windir%
%SystemRoot%
%Temp%
%Tmp%
%ProgramFiles%
%commonprogramfiles%
%APPDATA%
%ComSpec%
%LOGONSERVER% 阅读全文
摘要：
1.中英文判断--判断字符是英文还是汉字
2.用eclipse连接mysql数据库 阅读全文
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