AJAX接收XML文档出错!

Question

接收XML
<%@ page language="java" import="java.util.*" pageEncoding="gb2312"%>
<%@ page import="java.io.*,org.apache.xerces.parsers.DOMParser,org.w3c.dom.*" %><%
//定义一个StringBuffer对象,用来接收请求参数
StringBuffer sb = new StringBuffer();
String line = null;
//通过request获取输入流
BufferedReader br = request.getReader();
//依次读取输入流的数据
while((line = br.readLine()) != null) {
sb.append(line);
}
//将输入流中的内容转换成字符串
String xml = sb.toString();
//构建DOM解析器
DOMParser dp = new DOMParser();
dp.parse(xml);
//获取文档对象
Document doc = dp.getDocument();
//获取根节点
Element root = doc.getDocumentElement();
//
NodeList nl = root.getElementsByTagName("*");
//定义服务器响应的结果
String result = "";
for (int i=0; i<nl.getLength(); i++) {
Element city = (Element)nl.item(i);
if (city.getNodeValue().equals("1")) {
result += "上海$北京$常州";
} else if (city.getNodeValue().equals("2")) {
result += "$华盛顿$休斯顿$纽约";
} else if (city.getNodeValue().equals("3")) {
result += "$东京$大坂$福冈";
}
}
out.println(result);
%>

Answer 1

报的错误:
严重: Servlet.service() for servlet jsp threw exception
org.xml.sax.SAXParseException: File "<countrys><city>2</city></countrys>" not found.
at org.apache.xerces.framework.XMLParser.reportError(XMLParser.java:1202)
at org.apache.xerces.readers.DefaultEntityHandler.startReadingFromDocument(DefaultEntityHandler.java:499)
at org.apache.xerces.framework.XMLParser.parseSomeSetup(XMLParser.java:312)
at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:1080)
at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:1122)
at org.apache.jsp.xmlHttpRequest.incerptXml_jsp._jspService(incerptXml_jsp.java:63)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:328)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:315)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:414)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:210)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:870)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685)
at java.lang.Thread.run(Thread.java:595)

Answer 2

对java不熟悉，断点调试在哪里出错，不过最好去java那里去问

Answer 3

主要是解析DOM是出的错,还是不太熟练~

Answer 4

function createXml() {
            var xml = "<countrys>";
            var ops = document.getElementById("first").childNodes;
            var op;
            for (i=0; i<ops.length; i++) {
                op = ops[i];
                //如果某个选项被选中
                if (op.selected) {
                    var xml = xml + "<city>" + op.value + "<\/city>";
                }                
            }
            //结束XML根节点
            xml = xml + "<\/countrys>";
            return xml;
        }
        xml=" <countrys> <city>"+ op.value +"</city> </countrys>"
        function send() {
            createXMLHttpRequest();  //初始化
            var url = "incerptXml.jsp";
            xhr.open("POST", url, true);
            xhr.onreadystatechange = processRequest;
            xhr.send(createXml());
        }

         //将输入流中的内容转换成字符串
         String xml = sb.toString();

Answer 5

org.xml.sax.SAXParseException:   File   " <countrys> <city> 2 </city> </countrys> "   not   found. 

Answer 6

代碼我也沒測試。只是看了一下，錯誤應該是你的File對象沒有獲得正確吧

Answer 7

对没有解析正确,我刚才做了下测试用DOM4J做没有任何问题,但用DOM做就有问题了
sendXml.html这个文件没有问题,就是incerpt.jsp有问题,用DOM如何解析?