复制代码 代码如下:

package dw05prj.util.filter;

import javax.servlet.Filter;

import javax.servlet.FilterConfig;

import javax.servlet.ServletException;

import javax.servlet.ServletRequest;

import javax.servlet.ServletResponse;

import javax.servlet.FilterChain;

import java.io.IOException;

/*页面字符集过滤流*/

/*

在web.xml中配制的例子

<filter>

<filter-name>CharEncodingFilter</filter-name>

<filter-class>dw05prj.util.filter.CharEncodingFilter</filter-class>

<init-param>

<param-name>charset</param-name>

<param-value>GBK</param-value>

</init-param>

</filter>

<filter-mapping>

<filter-name>CharEncodingFilter</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

*/

public class CharEncodingFilter implements Filter {

private String charSet ;

public void init(FilterConfig parm1) throws ServletException {

charSet = parm1.getInitParameter("charset") ;

if (charSet == null && charSet.length() < 1)

{

charSet = "UTF-8" ;

}

System.out.println ("CharEncodingFilter--字符集: " + this.getCharSet()) ;

}

public void doFilter(ServletRequest parm1, ServletResponse parm2,

FilterChain parm3) throws IOException, ServletException {

// 设定字符集

parm1.setCharacterEncoding(this.getCharSet());

parm3.doFilter(parm1, parm2);

//页面中每个向服务器的请求都被过滤 -- 如 图片,js,HTML/JSP等等

//System.out.println ("---CharEncodingFilter: " + this.getCharSet()) ;

}

public void destroy() {

// TODO: Add your code here

this.setCharSet(null) ;

}

public void setCharSet(String charSet) {

this.charSet = charSet;

}

public String getCharSet() {

return (this.charSet);

}

}