過濾器解決中文亂碼

阿新 • • 發佈：2019-01-16

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[color=green]本文主要講解在網站開發中兩個方面的問題，一是中文亂碼，二是 css 的控制：比如標題欄按鈕按下的顏色控制等，例如優酷的標題欄，處在哪個標題下該標題顏色就會加深。涉及到了jsp的動作標籤<jsp:include page=""><jsp:param name="" value="" /> [color=red]注意：所涉及的css只要在web-inf下建個css資料夾在建一個空css檔案把我給的程式碼拷進去就可以了[/color][/color]
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1.設計較為簡單，主要涉及兩個jsp頁面。其中的一個包含另一個並向其傳遞引數（中文引數）為了解決中文亂碼問題而使用filter.當然也可以不傳遞中文，主要是為了學習一下fiter的使用並檢驗一下。
2. [color=orange]第一個jsp頁面為head.jsp程式碼如下[/color]
<%@ page language="java" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<div id="header">
<h1 id="logo">
<a href="./" title="[Go to homepage]"><img src="tmp/logo.gif" alt="" /></a>
</h1>
<hr class="noscreen" />


<div id="nav">
<a href="#" id="nav-active">Homepage</a><span>|</span>
<a href="#">About us</a><span>|</span>
<a href="#">Support</a><span>|</span>
<a href="#">Contact</a>
</div>

</div>



<div id="tray">

<ul>
<c:if test="${param.page eq '主頁'}">
<li id="tray-active"><a href="#">個人中心</a></li>
</c:if>
<c:if test="${param.page ne '主頁''}">
<li><a href="#">個人中心</a></li>
</c:if>
<c:if test="${param.page eq '第二頁'}">
<li id="tray-active"><a href="#">個人資訊維護</a></li>
</c:if>
<c:if test="${param.page ne '第二頁'}">
<li><a href="#">個人資訊維護</a></li>
</c:if>
<c:if test="${param.page eq 'jobinfo'}">
<li id="tray-active"><a href="#">就業資訊維護</a></li>
</c:if>
<c:if test="${param.page ne 'jobinfo'}">
<li><a href="#">就業資訊維護</a></li>
</c:if>
</ul>


<div id="search" class="box">
<form action="#" method="get">
<div class="box">
<div id="search-input">
<span class="noscreen">Search:</span>
<input type="text" size="30" name="" value="Search" />
</div>
<div id="search-submit">
<input type="image" src="design/search-submit.gif" value="OK" />
</div>
</div>
</form>
</div>


<hr class="noscreen" />
</div>

[color=orange]3.第二個jsp test.jsp 程式碼如下[/color]
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html" %>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<meta http-equiv="content-language" content="en" />
<meta name="robots" content="all,follow" />

<meta name="author" lang="en" content="All: Your name [www.url.com]; e-mail:

[email protected]" />
<meta name="copyright" lang="en" content="Webdesign: Nuvio [www.nuvio.cz]; e-mail: [email protected]" />

<meta name="description" content="..." />
<meta name="keywords" content="..." />

<link rel="stylesheet" media="screen,projection" type="text/css" href="css/reset.css" />
<link rel="stylesheet" media="screen,projection" type="text/css" href="css/main.css" />

<link rel="stylesheet" media="screen,projection" type="text/css" href="css/style.css" />
<link rel="stylesheet" media="print" type="text/css" href="css/print.css" />

<title>Impress</title>
</head>

<body>

<div id="main">

<jsp:include page="include/stdHead.jsp">
<jsp:param name="page" value="主頁"/> //此處的value值自己變動看效果
</jsp:include>
</div>
</body>
</html>
3.EncodingFiter.java的程式碼如下
package com.czg.common;

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;
import javax.servlet.http.HttpServletRequest;

public class EncodingFilter implements Filter {

protected FilterConfig filterConfig;
protected String targetEncoding = null;

public void destroy() {

this.filterConfig = null;

}

public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {

System.out.println("使用"+ targetEncoding + "編碼");

HttpServletRequest request2 = (HttpServletRequest)request;
request2.setCharacterEncoding(targetEncoding);
chain.doFilter(request, response);

}

public void init(FilterConfig filterConfig) throws ServletException {

this.filterConfig = filterConfig;
this.targetEncoding = filterConfig.getInitParameter("enconding");

}

public void setFilterConfig(FilterConfig filterConfig) {
this.filterConfig = filterConfig;
}

}
[color=orange]4.配置xml檔案[/color]
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<filter>
<filter-name>encoding</filter-name>
<filter-class>com.czg.common.EncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>utf-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

</web-app>
5.css的程式碼如下
程式碼壓縮檔案上傳不上去，有需要和我聯絡

[email protected]

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