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					1、首先确定Apache是否加载了Mod_rewrite 模块 
					方法: 检查 httpd.conf 中是否存在以下两段代码 (具体路径可能会有所不同,但形式基本是一样的): 
					(一)LoadModule rewrite_module libexec/mod_rewrite.so 
					(二)AddModule mod_rewrite.c 
					2、检查Apache是否开启.htaccess支持 
					httpd.conf 
					AllowOverride All #如果后面参数为None需要修改为All 
					编辑apache的httpd.conf
 
					
						
						 
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									<Directory />Options FollowSymLinks
 AllowOverride All
 </Directory>
 
									<Directory "目录">
 
									## Possible values for the Options directive are "None", "All",
 # or any combination of:
 #   Indexes Includes FollowSymLinks SymLinksifOwnerMatch ExecCGI MultiViews
 #
 # Note that "MultiViews" must be named *explicitly* --- "Options All"
 # doesn't give it to you.
 #
 # The Options directive is both complicated and important.  Please see
 # for more information.
 #
 Options Indexes FollowSymLinks
 
									#
 # AllowOverride controls what directives may be placed in .htaccess files.
 # It can be "All", "None", or any combination of the keywords:
 #   Options FileInfo AuthConfig Limit
 #
 AllowOverride All
 
									## Controls who can get stuff from this server.
 #
 Order allow,deny
 Allow from all
 
									</Directory> |  
					3、在文件httpd.conf相应的主机目录配置中加入如下代码(此时须注意,如果网站是通过虚拟主机来定义,请务必加到虚拟主机配置中去,否则可能无法使用。)
 
					注意事项:我当时也只把AllowOverride none改成了all但是没有效果,后来直接查了了httpd.conf文件中所有AllowOverride none替换成AllowOverride All再重启apache就可以使用htaccess了。
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