resp的字节输出和字符输出以及浏览器和服务器编码不一致的问题

字符输出

点击查看代码

package 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("/ServletDemo1")
public class ServletDemo1 extends HttpServlet {
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //设置编码
//        resp.setCharacterEncoding("utf-8");
        //告诉浏览器你的编码方式
        //resp.setHeader("content-type","text/html;charset=utf-8");
        resp.setContentType("text/html;charset=utf-8");

        //获取输出流
        PrintWriter pw= resp.getWriter();
        pw.write("你就大大");
    }

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        this.doPost(req,resp);
    }
}

字节输出

点击查看代码

package 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.io.PrintWriter;

@WebServlet("/ServletDemo2")
public class ServletDemo2 extends HttpServlet {
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //设置编码
//        resp.setCharacterEncoding("utf-8");
        //告诉浏览器你的编码方式
        //resp.setHeader("content-type","text/html;charset=utf-8");
        resp.setContentType("text/html;charset=utf-8");

        //获取输出流
        ServletOutputStream ops = resp.getOutputStream();

        ops.write("你就大大".getBytes("utf-8"));
    }

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        this.doPost(req,resp);
    }
}