英文系统乱码的解决

原先在中文系统环境中调试成功发布到在英文系统下出现乱码

系统使用了编码过滤

编码过滤器CharEncodingFilter.java

if(encoding!=null&&!encoding.equals("")){
			request.setCharacterEncoding(encoding);
		}else{
			request.setCharacterEncoding("utf-8");
		}
		chain.doFilter(request, response);

权限过滤器AdminFilter.java

HttpServletRequest httprequest=(HttpServletRequest)request;
		HttpServletResponse httpresponse=(HttpServletResponse)response;

		String url=httprequest.getRequestURI().toLowerCase();
		String prefix=httprequest.getParameter("prefix");
		String page=httprequest.getParameter("page");
		chain.doFilter(request, response);

系统中使用的两个过滤器如上
之前的过滤顺序是:

	<filter>
		<filter-name>AdminFilter</filter-name>
		<filter-class>com.common.filter.AdminFilter</filter-class>
	</filter>
	<filter-mapping>
		<filter-name>AdminFilter</filter-name>
		<url-pattern>*.liao</url-pattern>
	</filter-mapping>

	<!-- 编码过滤 -->
	<filter>
		<filter-name>CharEncodingFilter</filter-name>
		<filter-class>
			com.common.filter.CharEncodingFilter
		</filter-class>
		<init-param>
			<param-name>encoding</param-name>
			<param-value>utf-8</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>CharEncodingFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>

在中文系统下编码没有论何问题
发布到英文系统下出现乱码
调整过滤顺序后

	<!-- 编码过滤 -->
	<filter>
		<filter-name>CharEncodingFilter</filter-name>
		<filter-class>
			com.common.filter.CharEncodingFilter
		</filter-class>
		<init-param>
			<param-name>encoding</param-name>
			<param-value>utf-8</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>CharEncodingFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>

	<filter>
		<filter-name>AdminFilter</filter-name>
		<filter-class>com.common.filter.AdminFilter</filter-class>
	</filter>
	<filter-mapping>
		<filter-name>AdminFilter</filter-name>
		<url-pattern>*.liao</url-pattern>
	</filter-mapping>

乱码问题解决,或者不调整过滤顺序
修改AdminFilter.java如下

HttpServletRequest httprequest=(HttpServletRequest)request;
		HttpServletResponse httpresponse=(HttpServletResponse)response;
		httprequest.setCharacterEncoding("utf-8");//加入转码后乱码问题解决
		String url=httprequest.getRequestURI().toLowerCase();
		String prefix=httprequest.getParameter("prefix");
		String page=httprequest.getParameter("page");
		chain.doFilter(request, response);

乱码原因不明,