日期字符串"2007-2-1 11:23:04" 转换成 "Thu, 1 Feb 2007 11:23:04 +0800"
日期字符串 "2007-2-1   11:23:04 "   转换成   "Thu,   1   Feb   2007   11:23:04   +0800 "
请问如何实现?

------解决方案--------------------
Thu, 1 Feb 2007 11:23:04 +0800是默认显示方式，
你按照对应的字段格式化就可以了：
Letter Date or Time Component Presentation Examples
G Era designator Text AD
y Year Year 1996; 96
M Month in year Month July; Jul; 07
w Week in year Number 27
W Week in month Number 2
D Day in year Number 189
d Day in month Number 10
F Day of week in month Number 2
E Day in week Text Tuesday; Tue
a Am/pm marker Text PM
H Hour in day (0-23) Number 0
k Hour in day (1-24) Number 24
K Hour in am/pm (0-11) Number 0
h Hour in am/pm (1-12) Number 12
m Minute in hour Number 30
s Second in minute Number 55
S Millisecond Number 978
z Time zone General time zone Pacific Standard Time; PST; GMT-08:00
Z Time zone RFC 822 time zone -0800