各位帮我看看下面的代码__String_public_static_final_location_

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各位帮我看看下面的代码

来源: 互联网发布时间：2015-07-03

本文导语: 最近在网上得到XmlParser.java 我编译的时候出现以下错误，我对java的概念理解很少，希望给我指导一下：环境：win2000+JDK1.4+Tomcat4.03 下面是你的代码： package mvc; import java.util.HashMap; import org.xml.sax.InputSource; import ...

最近在网上得到XmlParser.java
我编译的时候出现以下错误，我对java的概念理解很少，希望给我指导一下：
环境：win2000+JDK1.4+Tomcat4.03
下面是你的代码：
package  mvc;
import java.util.HashMap;

import  org.xml.sax.InputSource;
import  org.w3c.dom.Element;
import  org.w3c.dom.Document;
import  org.w3c.dom.NodeList;
import  org.w3c.dom.Node;
import  org.xml.sax.SAXException;
import  org.xml.sax.SAXParseException;
import  org.xml.sax.SAXException;

import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.DocumentBuilder;

import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;

public class XmlParser {
    public static final String URL_MAPPING = "url-mapping";
    public static final String SCREEN_DEFINITION = "screen-definition";
    public static final String URL = "url";
    public static final String TEMPLATE = "template";
    public static final String RESULT = "result";
    public static final String NEXT_SCREEN = "screen";
    public static final String SCREEN = "screen";
    public static final String SCREEN_NAME = "screen-name";
    public static final String PARAMETER = "parameter";
    public static final String USE_REQUEST_HANDLER = "useRequestHandler";
    public static final String REQUIRES_SIGNIN = "requiresSignin";
    public static final String USE_FLOW_HANDLER = "useFlowHandler";
    public static final String FLOW_HANDLER_CLASS = "class";
    public static final String REQUEST_HANDLER_CLASS = "request-handler-class";
    public static final String HANDLER_RESULT = "handler-result";
    public static final String FLOW_HANDLER = "flow-handler";
    public static final String DEFAULT_SCREEN = "default-screen";
    public static final String SIGNIN_ERROR_SCREEN = "signin-error-screen";
    public static final String KEY = "key";
    public static final String VALUE = "value";
    public static final String DIRECT = "direct";

    public XmlParser () {
    }

    public static Element loadDocument (String location) {
        Document doc = null;
        try {
            URL url = new URL(/tech-qa-java/location/index.html);
            InputSource xmlInp = new InputSource(url.openStream());
            DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
            DocumentBuilder parser = docBuilderFactory.newDocumentBuilder();
            doc = parser.parse(xmlInp);
            Element root = doc.getDocumentElement();
            root.normalize();
            return  root;
        } catch (SAXParseException err) {
            Debug.println("XmlParser ** Parsing error" + ", line " +
                    err.getLineNumber() + ", uri " + err.getSystemId());
            Debug.println("XmlParser error: " + err.getMessage());
        } catch (SAXException e) {
            Debug.println("XmlParser error: " + e);
        } catch (java.net.MalformedURLException mfx) {
            Debug.println("XmlParser error: " + mfx);
        } catch (java.io.IOException e) {
            Debug.println("XmlParser error: " + e);
        } catch (Exception pce) {
            Debug.println("XmlParser error: " + pce);
        }
        return  null;
    }

    /**
     * put your documentation comment here
     * @param location
     * @return
     */
    public static ScreenFlowData loadScreenFlowData (String location) {
        Element root = loadDocument(location);
        HashMap screenDefinitionMappings = getScreenDefinitions(root);
        String defaultScreen = getTagValue(root, DEFAULT_SCREEN);
        String signinErrorScreen = getTagValue(root, SIGNIN_ERROR_SCREEN);
        return  new ScreenFlowData(screenDefinitionMappings, defaultScreen,
                signinErrorScreen);
    }

    /**
     * put your documentation comment here
     * @param location
     * @return
     */
    public static HashMap loadScreenDefinitions (String location) {
        Element root = loadDocument(location);
        return  getScreens(root);
    }

    /**
     * put your documentation comment here
     * @param location
     * @return
     */
    public static HashMap loadRequestMappings (String location) {
        Element root = loadDocument(location);
        return  getRequestMappings(root);
    }

    public static HashMap loadScreenDefinitionMappings (String location) {
        Element root = loadDocument(location);
        return  getScreenDefinitions(root);
    }

    /**
     * 获取tagName结点的子结点subTagName的attribute属性
     * put your documentation comment here
     * @param location
     * @return
     */
    private static String getSubTagAttribute (Element root, String tagName,
            String subTagName, String attribute) {
        String returnString = "";
        NodeList list = root.getElementsByTagName(tagName);
        for (int loop = 0; loop