request对象和response对象(2)

p>    

p>    //以字节流用utf-8编码向客户端输出中文数据

p>    private void test4(HttpServletResponse response) throws IOException{

p>        String s = "你好！四";

p>        response.setContentType("text/html;charset=UTF-8");

p>        ServletOutputStream out = response.getOutputStream();

p>        out.write(s.getBytes("UTF-8"));

p>    }

p>    

p>    public void doPost(HttpServletRequest request, HttpServletResponse response)

p>            throws ServletException, IOException {

p>        doGet(request,response);

p>    }

p>}

p>复制代码

p>分析：出现乱码的图解

p> 

p> 

p> 

p> 

p> 

p>解决办法：

p> 

p>1)通过更改浏览器的编码方式：IE/”查看”/”编码”/”UTF-8”(不可取)

p> 

p>2)通过设置响应头告知客户端编码方式：response.setHeader(“Content-type”, “text/html;charset=UTF-8”);//告知浏览器数据类型及编码

p> 

p>3)通过meta标签模拟请求头:out.write("<meta http-equiv='Content-Type' content='text/html; charset=utf-8' />".getBytes());

p> 

p>4)通过以下方法：response.setContentType("text/html;charset=UTF-8");

p> 

p>2.向客户端输出中文数据（字符）

p> 

p>复制代码

p>package cn.lsl.response;

p> 

p>import java.io.IOException;

p>import java.io.PrintWriter;

p>import javax.servlet.ServletException;

p>import javax.servlet.http.HttpServlet;

p>import javax.servlet.http.HttpServletRequest;

p>import javax.servlet.http.HttpServletResponse;

p> 

p>public class ResponseDemo2 extends HttpServlet {

p>    

p>    public void doGet(HttpServletRequest request, HttpServletResponse response)

p>            throws ServletException, IOException {

p>        test3(response);

p>    }

p> 

p>    //字符流输出中文数据

p>    private void test1(HttpServletResponse response) throws IOException{

p>        String s = "你好！一";

p>        response.setCharacterEncoding("UTF-8");    //设置查的UTF-8（对内容进行编码，查utf-8）

p>        response.setHeader("Content-Type", "text/html;charset=UTF-8");//通知浏览器以utf-8打开

p>        PrintWriter out = response.getWriter();

p>        out.write(s);//默认查的是ISO-8859-1码表

p>    }

p>    //字符流输出中文数据

p>    private void test2(HttpServletResponse response) throws IOException{

p>        String s = "你好！二";