时间:2008-08-28 06:00:57   来源:论坛整理  作者:  编辑:chinaitzhe

一般的过滤乱码只能过滤post方法请求的乱码,现在需要一个能同时过滤get方法请求的过滤器代码
网友回复:不是吧，过滤器是过滤请求的不分什么GET/POST.网上有的是。
网友回复:一般的过滤乱码只能过滤post方法请求的乱码
你为何这么说呢？
网友回复:对于 get：
request.setCharacterEncoding("UTF-8");

对于post:
则要用Map集合拿到所以请求的资源，
让后进行Iterator迭代



网友回复:import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;


public class EncodingFilter implements Filter {

protected boolean ignore = true;

protected FilterConfig config;

protected String targetEncoding = "UTF-8";

public void init(FilterConfig config) throws ServletException {

this.config = config;
this.targetEncoding = config.getInitParameter("encoding");
String value = config.getInitParameter("ignore");

if (value == null)
this.ignore = true;
else if (value.equalsIgnoreCase("true"))
this.ignore = true;
else if (value.equalsIgnoreCase("yes"))
this.ignore = true;
else
this.ignore = false;
}

public void destroy() {
config = null;
targetEncoding = null;
}

public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {

if (ignore ¦ ¦ (request.getCharacterEncoding() == null)) {
String encoding = selectEncoding(request);
if (encoding != null)
request.setCharacterEncoding(encoding);
}

chain.doFilter(request, response);
}

protected String selectEncoding(ServletRequest request) {

return (this.targetEncoding);
}
}

在web.xml 里配置
<filter>
<filter-name>EncodingFilter </filter-name>
<filter-class>cn.usj.gyj.common.EncodingFilter </filter-class>
<init-param>
<param-name>encoding </param-name>
<param-value>UTF-8 </param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>EncodingFilter </filter-name>
<url-pattern>/* </url-pattern>
</filter-mapping>