Response_案例2_输出字符数据与Response_案例3_输出字节数据

Response_案例2_输出字符数据

      2. 服务器输出字符数据到浏览器
              1.步骤:
                1. 获取字符输出流
                2. 输出数据

               2.注意:
                乱码问题:
                  1. PrintWriter pw = response.getWriter();获取的流的默认编码是ISO-8859-1
                  2. 设置该流的默认编码
                  3. 告诉浏览器响应体使用的编码

              //简单的形式,设置编码,是在获取流之前设置
              response.setContentType("text/html;charset=utf-8");

package qh.xueqiang.servlet;

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;
import java.io.PrintWriter;

@WebServlet("/responseDemo04")
public class ResponseDemo04 extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
            this.doPost(request,response);
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //获取流对象之前,设置流默认编码:ISO-8859-1 设置为GBK
        //response.setCharacterEncoding("GBK");

        //告诉浏览器,服务器发送的消息体数据的编码。建议浏览器使用该编码
        //response.setHeader("content-type","text/html;charset=utf-8");


        //简单的形式,设置编码
        response.setContentType("text/html;charset=utf-8");

                //1.获取字符串输出流
            PrintWriter pw = response.getWriter();
                //2.输出数据
           // pw.write("<h1>nihaoya,nizaiganmayageigei~</h1>");



            pw.write("<h1>你好呀,王耀我回来了~</h1>");


    }
}

 

Response_案例3_输出字节数据

          3. 服务器输出字节数据到浏览器

              步骤:
                1. 获取字节输出流
                2. 输出数据

package qh.xueqiang.servlet;

import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.nio.charset.StandardCharsets;

@WebServlet("/responseDemo05")
public class ResponseDemo05 extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
            this.doPost(request,response);
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //简单的形式,设置编码
        response.setContentType("text/html;charset=utf-8");
                    //1.获取字节输出流
        ServletOutputStream os = response.getOutputStream();
                    //2.输出数据
        os.write("萤火之光岂能与皓月争辉".getBytes());
    }
}

 

posted @ 2023-02-02 09:41  zj勇敢飞,xx永相随  阅读(30)  评论(0编辑  收藏  举报