推薦：jsp如何解決Form表單亂碼問題
網(wǎng)站程序中的Form表單，是重要的組成內(nèi)容之一，很多時(shí)候，F(xiàn)orm表單會(huì)出現(xiàn)亂碼的現(xiàn)象，會(huì)給網(wǎng)站造成一定的困擾。如何解決亂碼的問題? JSP和Servlet的六種中文亂碼處理方法 一、表單提交時(shí)出現(xiàn)亂碼： 在進(jìn)行表單提交的時(shí)候，經(jīng)常提交一些中文，自然就避免不了出現(xiàn)中文亂

 一、應(yīng)用背景

JSP取得Servlet中放入request的List，將List中的數(shù)據(jù)拼裝成XML。以下代碼在Eclipse的內(nèi)置瀏覽器中顯示為xml，沒有問題。

[java]
/**
* 新聞Servlet
* @author 徐越
*
*/
public class ListServlet extends HttpServlet
{
private static final long serialVersionUID = 1L;
private VideoNewsService vs = new VideoNewsServiceImpl();

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
doPost(request, response);
}

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
List<VideoNews> news = vs.readNews();
request.setAttribute("lstnews", news);
request.getRequestDispatcher("/WEB-INF/pages/news.jsp").forward(request, response);
}
}

/**
* 新聞Servlet
* @author 徐越
*
*/
public class ListServlet extends HttpServlet
{
private static final long serialVersionUID = 1L;
private VideoNewsService vs = new VideoNewsServiceImpl();

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
doPost(request, response);
}

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
List<VideoNews> news = vs.readNews();
request.setAttribute("lstnews", news);
request.getRequestDispatcher("/WEB-INF/pages/news.jsp").forward(request, response);
}
}
[html]
<%@ page language="java" contentType="text/xml; charset=utf-8" pageEncoding="utf-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<?xml version="1.0" encoding="UTF-8"?>
<videoNews>
<c:forEach items="${lstnews}" var="n">
<news id="${n.id }">
<title>${n.title }</title>
<length>${n.timeLength }</length>
</news>
</c:forEach>
</videoNews>

<%@ page language="java" contentType="text/xml; charset=utf-8" pageEncoding="utf-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<?xml version="1.0" encoding="UTF-8"?>
<videoNews>
<c:forEach items="${lstnews}" var="n">
<news id="${n.id }">
<title>${n.title }</title>
<length>${n.timeLength }</length>
</news>
</c:forEach>
</videoNews>

二、發(fā)現(xiàn)問題

火狐中報(bào)錯(cuò)：XML解析錯(cuò)誤：XML 或文本聲明不在實(shí)體的開頭

chrome報(bào)錯(cuò)：XML declaration allowed only at the start of the document

根據(jù)錯(cuò)誤信息，可以知道XML聲明<?xml version="1.0" encoding="UTF-8"?>必須在文檔的開頭。

三、解決問題

將page、taglib、xml同時(shí)放在第一行即可，一個(gè)接一個(gè)的后面。雖然不好看，但是解決問題哦

分享：jsp上傳圖片即時(shí)顯示效果代碼
scriptfunction setImagePreview() { var docObj=document.getElementById(doc); var imgObjPreview=document.getElementById(preview);if(docObj.files docObj.files[0]){ //火狐下，直接設(shè)img屬性 imgObjPreview.style.display = 'block'; imgObjPreview.style.width