Response对象通过字节流输出中文内容

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Response对象通过字节流输出中文内容：

第一种方法：

ResponseDemo1.java文件：

package com.neu;import java.io.IOException;import javax.servlet.ServletException;import javax.servlet.ServletOutputStream;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class ResponseDemo1 extends HttpServlet {public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {test1(response);}//解决方案一：更改浏览器的码表（不建议）//解决方案二(不建议)：向客户端输出一个<meta>标签,模拟了响应消息头：<meta http-equiv='Content-Type' content='text/html;charset=UTF-8'>//解决方案三（建议）:向客户端输出响应消息头：response.setHeader("Content-Type", "text/html;charset=UTF-8");//解决方案四（建议）：向客户端输出响应消息头response.setContentType("text/html;charset=UTF-8");//字节流输出数据查UTF-8private void test2(HttpServletResponse response) throws IOException{String data = "不见了远处的青山";response.setContentType("text/html;charset=UTF-8");ServletOutputStream out = response.getOutputStream();out.write(data.getBytes("UTF-8"));//默认情况下：浏览器是乱码的（他默认查GBK）}//字节流输出数据查本地码表private void test1(HttpServletResponse response) throws IOException {String data = "不见了远处的青山";ServletOutputStream out = response.getOutputStream();out.write(data.getBytes());//String:  getBytes()查本地默认的码表GBK getBytes(String charset)查指定码表}public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {doGet(request, response);}}

运行：http:localhost:8080/Response/servlet/ResponseDemo1

结果：不见了远处的青山

第二种方法：

ResponseDemo2.java文件：

运行：http:localhost:8080/Response/servlet/ResponseDemo1

package com.neu;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;/** * 字符流输出中文数据 * @author wym * */public class ResponseDemo2 extends HttpServlet {public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {test1(response);}private void test1(HttpServletResponse response) throws IOException {String data = "幸福是什么？";//改变字符流查的码表response.setCharacterEncoding("UTF-8");//告知客户端用UTF-8进行解码response.setContentType("text/html;charset=UTF-8");PrintWriter out = response.getWriter();//HttpServletResponse的实例由Tomcat服务器提供，Tomcat6.x默认查ISO-8859-1编码；Tomcat8.x默认编码为UTF-8out.write(data);}public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {doGet(request, response);}}

运行：http:localhost:8080/Response/servlet/ResponseDemo2

结果：幸福是什么？

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