中文过滤问题哪里错了过滤不了中文呐？

朗晴 2019-03-14 02:03:11 
http://localhost/lesson18/index2.jsp



<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

<%

String path = request.getContextPath();

String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

%>



<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

  <head>

    <base href="<%=basePath%>">

    

    <title>My JSP 'index.jsp' starting page</title>

	<meta http-equiv="pragma" content="no-cache">

	<meta http-equiv="cache-control" content="no-cache">

	<meta http-equiv="expires" content="0">    

	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">

	<meta http-equiv="description" content="This is my page">

	<!--

	<link rel="stylesheet" type="text/css" href="styles.css">

	-->

  </head>

  

  <body>

    This is my JSP page. <br>

    欢迎，欢迎，热烈欢迎！<br>

  <form action="/lesson18/servlet/demoCode2" method="post">

  <input type="text" name="username"><br>

  <input type="submit"><br>

  </form>

  </body>

</html>



<?xml version="1.0" encoding="UTF-8"?>

<web-app version="2.5" 

	xmlns="http://java.sun.com/xml/ns/javaee" 

	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 

	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 

	http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

	

	<filter>

	<filter-name>EncodingFilter</filter-name>

	<filter-class>com.lesson18.CharacterEncodingFilter</filter-class>

	<init-param>

	<param-name>encoding</param-name>

	<param-value>UTF-8</param-value>

	</init-param>

	</filter>

	<filter-mapping>

	<filter-name>EncodingFilter</filter-name>

	<url-pattern>/*</url-pattern>

	</filter-mapping>

	

	

  <servlet>

    <servlet-name>DemoCodeServlet</servlet-name>

    <servlet-class>com.lesson18.DemoCodeServlet</servlet-class>

  </servlet>

    <servlet>

    <servlet-name>DemoCodeServlet1</servlet-name>

    <servlet-class>com.lesson18.DemoCodeServlet1</servlet-class>

  </servlet>

  <servlet>

    <servlet-name>DemoCodeServlet2</servlet-name>

    <servlet-class>com.lesson18.DemoCodeServlet2</servlet-class>

  </servlet>

  <servlet>

    <servlet-name>DemoCodeServlet3</servlet-name>

    <servlet-class>com.lesson18.DemoCodeServlet3</servlet-class>

  </servlet>







  <servlet-mapping>

    <servlet-name>DemoCodeServlet</servlet-name>

    <url-pattern>/servlet/demoCode</url-pattern>

  </servlet-mapping>

  <servlet-mapping>

    <servlet-name>DemoCodeServlet1</servlet-name>

    <url-pattern>/servlet/demoCode1</url-pattern>

  </servlet-mapping>

  <servlet-mapping>

    <servlet-name>DemoCodeServlet2</servlet-name>

    <url-pattern>/servlet/demoCode2</url-pattern>

  </servlet-mapping>

  <servlet-mapping>

    <servlet-name>DemoCodeServlet3</servlet-name>

    <url-pattern>/servlet/demoCode3</url-pattern>

  </servlet-mapping>

  <welcome-file-list>

    <welcome-file>index.jsp</welcome-file>

  </welcome-file-list>

</web-app>



package com.lesson18;



import java.io.IOException;



import javax.servlet.Filter;

import javax.servlet.FilterChain;

import javax.servlet.FilterConfig;

import javax.servlet.ServletException;

import javax.servlet.ServletRequest;

import javax.servlet.ServletResponse;



public class CharacterEncodingFilter implements Filter

{

	private FilterConfig config;

	private String encoding = "ISO8859_1";

	

	public void destroy()

	{

		config = null;

	}

	

	public void doFilter(ServletRequest request, ServletResponse response,

			FilterChain chain) throws IOException, ServletException

	{

		request.setCharacterEncoding(encoding);

		chain.doFilter(request, response);

	}

	

	public void init(FilterConfig config) throws ServletException

	{

		this.config = config;

		String s = config.getInitParameter("encoding");

		if (s != null)

		{

			encoding = s;

		}

	}

	

}




package com.lesson18;



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;



public class DemoCodeServlet2 extends HttpServlet

{

	

	/**

	 * The doPost method of the servlet. <br>

	 * 

	 * This method is called when a form has its tag value method equals to

	 * post.

	 * 

	 * @param request

	 *            the request send by the client to the server

	 * @param response

	 *            the response send by the server to the client

	 * @throws ServletException

	 *             if an error occurred

	 * @throws IOException

	 *             if an error occurred

	 */

	public void doPost(HttpServletRequest request, HttpServletResponse response)

			throws ServletException, IOException

	{

		// request.setCharacterEncoding("utf-8");去掉这行依然可以显示中文，因为有XML过滤器过滤。

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

		PrintWriter out = response.getWriter();

		out

				.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");

		out.println("<HTML>");

		out.println("  <HEAD><TITLE>A Servlet</TITLE></HEAD>");

		out.println("  <BODY>");

		out.print("Welcome!<br>");

		out.println("用户名：" + request.getParameter("username"));

		out.println("  </BODY>");

		out.println("</HTML>");

		out.flush();

		out.close();

	}

	

}

...全文
324 8 打赏 收藏 转发到动态 举报
写回复
用AI写文章
8 条回复
切换为时间正序
请发表友善的回复…
发表回复
bcsflilong 2019-03-18
  • 打赏
  • 举报
 回复 




package com.lesson18;



import java.io.IOException;



import javax.servlet.Filter;

import javax.servlet.FilterChain;

import javax.servlet.FilterConfig;

import javax.servlet.ServletException;

import javax.servlet.ServletRequest;

import javax.servlet.ServletResponse;



public class CharacterEncodingFilter implements Filter {

	private FilterConfig config;

	private String encoding = "ISO8859_1";



	public void destroy() {

		config = null;

	}



	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)

			throws IOException, ServletException {

		request.setCharacterEncoding(encoding);

		request.setCharacterEncoding("utf-8");

		response.setCharacterEncoding("utf-8");

		response.setContentType("text/html;character=UTF-8");

		chain.doFilter(request, response);

	}



	public void init(FilterConfig config) throws ServletException {

		this.config = config;

		String s = config.getInitParameter("encoding");

		if (s != null) {

			encoding = s;

		}

	}



}
bcsflilong 2019-03-18
  • 打赏
  • 举报
 回复
我现在怀疑你是浏览器的编码格式 是不是有问题 你把浏览器编码格式改成UTF-8 不要使用GBK
朗晴 2019-03-16
  • 打赏
  • 举报
 回复
请大牛帮忙看一下，在下愿将400分奉上。感激不尽
朗晴 2019-03-15
  • 打赏
  • 举报
 回复
回楼上，我想要实现过滤器中文的功能，您说的这个方法我试过并且知道。
stacksoverflow 2019-03-15
  • 打赏
  • 举报
 回复
1.把这行代码加进去 response.setContentType("text/html;charset=utf-8"); 2.返回的html里 //可能有1就够了 out.println("<HTML>"); 改成 out.println("<html lang=\"zh-cn\">");
朗晴 2019-03-15
  • 打赏
  • 举报
 回复
请问有人能帮我纠正错误码，需要过滤器过滤，过滤后能够正常显示中文！谢谢。
朗晴 2019-03-14
  • 打赏
  • 举报
 回复
回楼上，试过了不行。

请各位坛友帮忙解答，谢谢！
bcsflilong 2019-03-14
  • 打赏
  • 举报
 回复 
private String encoding = "ISO8859_1";


改成

private String encoding = "UTF-8";



另外ISO8859_1 最好写成ISO8859-1或ISO-8859-1
使用过滤器解决中文乱码问题
使用过滤器解决中文乱码。有时候碰见乱码问题，作为开发人员总得想办法解决不是吗？
易语言过滤汉字
易语言过滤汉字源码,过滤汉字,字符代码过滤出汉字,正则模式过滤出汉字
全文搜索引擎Solr与ElasticSearch入门至集群及项目实战(Solr+ES)
本课程提供所有代码笔记素材以及答疑 涉及知识点如下： 1、Solr概述 2、Solr下载 3、Solr安装以及目录结构介绍 4、Solr应用部署至Tomcat服务器 5、Solr后台管理界面介绍 6、通过managed-schema配置Field以及中文分词...
VB过滤中文字符串源码
VB过滤中文字符串源码 VB过滤中文字符串源码 VB过滤中文字符串源码 VB过滤中文字符串源码 VB过滤中文字符串源码
用过滤器解决oracle中文乱码问题
只要按照这个上面说的，就可以解决从jsp页面从oracle数据库读取中文数据时的中文乱码问题。可以说是一劳永逸的办法。其他的修改配置之类的方法，我都试过了，没用，只用这个过滤器文件就可以了，里面详细说明了如何...
Web 开发

81,092

社区成员

341,716

社区内容

发帖
与我相关
我的任务
社区描述
Java Web 开发
社区管理员
  • Web 开发社区
加入社区
  • 近7日
  • 近30日
  • 至今

加载中

查看更多榜单
社区公告
暂无公告

试试用AI创作助手写篇文章吧

+ 用AI写文章