1.新建一个Dynamic Web Project项目，里面新建一个jsp文件和一个filter文件，整体的框架如下图所示： 2.one.jsp里面的代码如下所示： %@page import="java.util.Date"%%@ page language="java" contentType="text/
1.新建一个Dynamic Web Project项目，里面新建一个jsp文件和一个filter文件，整体的框架如下图所示：
2.one.jsp里面的代码如下所示：
<%@page import="java.util.Date"%> <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>example</title> </head> <body> <h2>Test</h2> </body> </html>
3.FirstFiler.java里面的代码如下所示：
package 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.annotation.WebFilter;
@WebFilter(filterName = "firstFilter", urlPatterns = { "/*" })
public class FirstFilter implements Filter {
public void destroy() {
}
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
response.setContentType("text/html;charset=utf-8");
PrintWriter out = response.getWriter();
out.print("首先执行过滤器<br>");
chain.doFilter(request, response);
}
@Override
public void init(FilterConfig arg0) throws ServletException {
}
}
4. 在浏览器里面输入http://localhost:8080/Servlet/one.jsp运行之后得到的结果如下所示：