Response案例2_输出字符数据、Response案例3_输出字节数据

Response案例2_输出字符数据

步骤:

  获取字符输出流

  输出数据

 

@WebServlet( value = "/Servlet3")
public class Servlet3 extends HttpServlet {
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// 获取字符流输出流
PrintWriter re = response.getWriter();
// 输出数据
re.write("<h1>hello respose</h1>");
}

@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

}
}

注意:

  乱码问题

    PrintWriter pw =response.getWriter();获取的流默认编码是ISO-8859-1

    设置改流的默认编码

    告诉浏览器响应体使用编码

    简单的形式:

      response.setContentType("text/html;charset = uft-8")

 

Response案例3_输出字节数据

  服务器输出字节数据到浏览器

    步骤:

      获取字符输出流

      输出数据  

   

@WebServlet(value = "/ServletZijie")
public class ServletZijie 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 {
// 获取字节
ServletOutputStream stream = response.getOutputStream();

// 输出数据
stream.write("你好".getBytes("utf-8"));
}
}

 

posted @ 2022-08-15 13:29  一位程序袁  阅读(55)  评论(0编辑  收藏  举报