知识大全解决JSP中拼装数据为XML出现的问题

Posted 2022-07-20 知

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　　一应用背景

　　JSP取得Servlet中放入request的List 将List中的数据拼装成XML 以下代码在Eclipse的内置浏览器中显示为xml 没有问题

　　[java] /** * 新闻Servlet * @author 徐越 * */ public class ListServlet extends HttpServlet private static final long serialVersionUID = L; 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);

　　/** * 新闻Servlet * @author 徐越 * */ public class ListServlet extends HttpServlet private static final long serialVersionUID = L; 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); [] <%@ page language="java" contentType="text/xml; charset=utf " pageEncoding="utf "%> <%@ taglib prefix="c" uri="%> <?xml version=" " encoding="UTF "?> <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 " pageEncoding="utf "%> <%@ taglib prefix="c" uri="%> <?xml version=" " encoding="UTF "?> <videoNews> <c:forEach items="$lstnews" var="n"> <news id="$n id "> <title>$n title </title> <length>$n timeLength </length> </news> </c:forEach> </videoNews>

　　二发现问题

　　火狐中报错 XML解析错误 XML 或文本声明不在实体的开头

　　chrome报错 XML declaration allowed only at the start of the document

　　根据错误信息可以知道XML声明<?xml version=" " encoding="UTF "?>必须在文档的开头

　　三解决问题

cha138/Article/program/Java/JSP/201311/19951

知识大全 解决JSP中拼装数据为XML出现的问题

知识大全解决JSP中拼装数据为XML出现的问题