3月9日每日总结

今天继续学习javaweb中servlet相关内容的学习

接收请求

package com.example.demo04;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet(name = "Servlet01",value = "/servlet1") //value值一定要是带有 / 的url
public class Servlet01 extends HttpServlet {
@Override
protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

//由于现在request属于接受客户端的参数，所以必然有默认编码，默认为ISO-8859-1,解析时会产生乱码
req.setCharacterEncoding("utf-8"); //设置req参数编码
resp.setCharacterEncoding("utf-16"); //设置resp参数编码
String uname = req.getParameter("uname"); //req.gerParameter()方法是以字符串形式返回请求参数的值，或者如果参数不存在则返回null
String upwd = req.getParameter("upwd");

System.out.println("姓名："+uname);
System.out.println("密码："+upwd);
resp.getWriter().write(uname);
System.out.println();
resp.getWriter().write(upwd);
//

}
}