📄 testfilter.java
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package com.ting.Filter;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
public class TestFilter implements Filter{
private FilterConfig config;
private String initName;
public void init(FilterConfig config)
{
this.config=config;
initName=config.getInitParameter("test");
System.out.print("初始值:"+initName);
}
public void doFilter(ServletRequest req,ServletResponse res,FilterChain chain) throws IOException, ServletException
{
HttpServletRequest request = (HttpServletRequest)req;
String name=request.getParameter("username");
String fname = null;
System.out.print("请求"+name);
if(name!=null)
fname=new String(name.getBytes("ISO8859-1"),"GBK");
if(fname!=null&&fname.indexOf(initName)!=-1)
{
PrintWriter out= res.getWriter();
//res.setCharacterEncoding("GBK");
res.setContentType("text/html;charset=GBK");
out.print("<html><head>我是谁？</head>");
out.print("</head><body>you can't say"+fname);
out.print("</body></html>");
//out.close();
out.flush();
}
// if(username.indexOf(me)!=-1)
// {
// PrintWriter out=arg1.getWriter();
// out.print("<html><head>eueu</head>");
// out.print("<body>对不起"+username+"你不能过去");
// out.print("</body></html>");
// out.close();
// }
chain.doFilter(req,res);
}
public void destroy() {
// TODO Auto-generated method stub
}
}
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