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Servlet Filter实例
1、Servlet code
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class Servlet2 extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
// TODO Auto-generated method stub
//super.doGet(req, resp);
doPost(req, resp);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
// TODO Auto-generated method stub
//super.doPost(req, resp);
PrintWriter out=resp.getWriter();
out.println("<html>");
out.println("<head>");
out.print("<title>");
out.print("Servlet2");
out.println("</title>");
out.println("</head>");
out.println("<body>");
out.println("<font size=\"+4\" color=\"#FF0000\"><b>This is the servlet2!</b><br>");
out.println("It doesn't work!<br>");
out.println(req.getAttribute("astring"));
out.println("<br>我是超小超");
out.println("</font></body>");
out.println("</html>");
}
}
2、xml<filter>
<filter-name>encodingfilter</filter-name>
<filter-class>EncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>Unicode</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingfilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
Servlet Filter实例
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