XStream Errors

Class.java

package edu.nd.iekechuk.JavaClassParse;

import java.util.ArrayList;
import java.util.List;

public class Class {

	private String course;
	//private String credits;
	private String crosslist;
	//private ArrayList<Section> sections = new ArrayList<Section>();
	
	private List<Section> sections = new ArrayList<Section>();
	//private Section section;

	public Class(String course, String crosslist, Section section) {
		this.course = course;
		//this.credits = credits;
		this.crosslist = crosslist;
		//this.section = section;
		//sections = new ArrayList<Section>();
		//sections.add(section);
		
	}

	public String getCourse() {
		return course;
	}

	public void setCourse(String course) {
		this.course = course;
	}
	
	public void add(Section section) {
		sections.add(section);	
	}
	
	public List getContents() {
		return sections;
	}
	
	public void clear() {
		sections.clear();
	}
}

Classes.java

package edu.nd.iekechuk.JavaClassParse;

import java.io.IOException;
import java.net.MalformedURLException;
import java.util.ArrayList;
import java.util.List;

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;

import com.gargoylesoftware.htmlunit.ElementNotFoundException;
import com.gargoylesoftware.htmlunit.FailingHttpStatusCodeException;
import com.gargoylesoftware.htmlunit.WebClient;
import com.gargoylesoftware.htmlunit.html.HtmlForm;
import com.gargoylesoftware.htmlunit.html.HtmlOption;
import com.gargoylesoftware.htmlunit.html.HtmlPage;
import com.gargoylesoftware.htmlunit.html.HtmlSelect;
import com.thoughtworks.xstream.XStream;

public class Classes {
	
	private String subject;
	//private String tag;
	private static List classes = new ArrayList();
	private Department department;
	
	public Classes(String subject) {
		// TODO Auto-generated constructor stub
		//classes = new ArrayList<Class>();
		department = new Department(subject);
			
	}
	
	public String getSubject() {
		return subject;
	}

	public void setSubject(String subject) {
		this.subject = subject;
	}

	public void testClient() {
		
		WebClient wc = new WebClient();
	    wc.setThrowExceptionOnScriptError(false);

	    HtmlPage currentPage = null;
		try {
			currentPage = (HtmlPage) wc.getPage("https://was.nd.edu/reg/srch/ClassSearchServlet");
		} catch (FailingHttpStatusCodeException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (MalformedURLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	    //("Google", currentPage.getTitleText());
	    
	    final HtmlForm form = currentPage.getFirstByXPath("//form[@action='ClassSearchServlet']");
	    
	    HtmlSelect selectSubject = (HtmlSelect) currentPage.getElementByName("SUBJ");
	    
	    // Accounting is selected by default on the page, do not want that
		selectSubject.setSelectedAttribute((HtmlOption) selectSubject.getOptionByValue("ACCT"), false); // Set default choice of accounting to false
	    
		HtmlOption optionSubject = (HtmlOption) selectSubject.getOptionByText("Art Studio");
		
		this.setSubject("Art Studio");
	    	    
	    ArrayList<HtmlOption> optionArray = new ArrayList<HtmlOption>();
	    
	    //optionArray.add(selectSubject.getOptionByValue("CSE"));	
	    selectSubject.setSelectedAttribute(optionSubject, true);
	    
	    //form.getInputByName("SUBJ").setValueAttribute("ACCT");
	    
	    //final HtmlSubmitInput button = form.getInputByName("Submit");
	    
	    HtmlPage newPage = null;
		try {
			newPage = (HtmlPage) form.getInputByValue("Search").click();
		} catch (ElementNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	    
	    String html = newPage.asXml();
	    
	    showResults(html);
	    
	 /*   final HtmlTable table = newPage.getHtmlElementById("resulttable");
	    
	    for (final HtmlTableRow row : table.getRows()) {
	    System.out.println("Found row");
	        for (final HtmlTableCell cell : row.getCells()) {
	           System.out.println("   Found cell: " + cell.asText());
	        }
	    }*/
 
	}
	
	public void showResults(String html) {
		
		String crn;
		String  title;
		String time;
		String instructor;
		String op_spots;
		String course;
		String section;
		
		Document doc = Jsoup.parse(html);
		
		Element table = doc.select("table[id=resulttable]").first();
		Element tablebody = table.select("tbody").first();
		
		// Make external XML
		XStream xstream = new XStream();
		
		xstream.alias("department", Department.class);
		xstream.alias("class", Class.class);
		xstream.alias("instructor", Instructor.class);
		xstream.alias("section", Section.class);
		
		Class entry = null;
		int i = 0;
		for(Element row : tablebody.select("tr")) {
			
			
			Elements cells = row.select("td");
			
			crn = cells.get(7).text();
			title = cells.get(1).text();
			time = cells.get(10).text();
			instructor = cells.get(9).text();
			op_spots = cells.get(5).text();
			String max_spots = cells.get(6).text();
			course = cells.get(0).text();
			
			String[] values = course.split(" ");
			
			course = values[0];
			section = values[2];
			
			Section addsect = new Section(section, "OP", max_spots, op_spots, instructor, crn, time);
			
			if(entry == null) {
				entry = new Class(course, "y", addsect);
				classes.add(entry);
				++i;
			}
			
			//System.out.println("Entry: " + entry.getCourse() + " " + course);
			
			
			if(entry.getCourse() == course) {	
				int index = classes.indexOf(entry);
				//Class second = new Class(Course);
					//System.out.println(entry.getCourse() + "  " + course);
					//department[i].addSection(addsect);
				//classes.add
			}
			
			else {
				entry = new Class(course, "y", addsect);
				++i;
			}
			
			//department.addtoList(addsect);
			
			}
			
			//list.add(entry);
			
			//System.out.println(xml);
			

			
			//System.out.println(course + "  " + section);
			
			//System.out.println(course + " - Section " + section + " : " + crn + "	" + title + " 	" + time + " 	" + instructor + " 	" + op_spots);	
		
		String xml = xstream.toXML(this.department);
		
		System.out.println(xml);
		
	}

	public List getClasses() {
		return classes;
	}

	public void setClasses(List classes) {
		this.classes = classes;
	}

}

Department.java

package edu.nd.iekechuk.JavaClassParse;

import java.util.ArrayList;
import java.util.List;

public class Department {

	private String subject;
	private String tag;
	private List<Class> classes = new ArrayList<Class>();
	
	//private Class entry;
	
	public Department(String subject) {
		// TODO Auto-generated constructor stub
		this.subject = subject;
		this.tag = tag;
		//this.classes = new ArrayList<Class>();
	}
	
	public void add(Class entry) {
		this.classes.add(entry);
	}
	
	public List getContent() {
		return classes;
	}


}

Desired XML Structure

<?xml version="1.0" ?>
<classes>
	<department subject="Accounting">
		<tag>ACCT</tag>
		<classinventory>
			<class course="ACCT20100">
				<name>Accountancy I</name>
				<credits>3</credits>
				<crosslist>true</crosslist>
				<sections>
					<section number = "01">
						<status>OP</status>
						<maxspots>30</maxspots>
						<openspots>30</openspots>
						<instructor>
							<first>Bob</first>
							<last>Doe</last>
						</instructor>

						<crn>22485</crn>

						<time>
							<days>T R</days>
							<start>11:00</start>
							<stop>12:15</stop>
						</time>

					</section>

					<section number = "02">
						<status>C</status>
						<maxspots>30</maxspots>
						<openspots>0</openspots>
						
						<instructor>
							<first>Plain</first>
							<last>Jane</last>
						</instructor>

						<crn>123456</crn>

						<time>
							<days>M W F</days>
							<start>10:40</start>
							<stop>11:30</stop>
						</time>

					</section>
				</sections>

			</class>
		</classinventory>



	</department>

</classes>

Main.java

package edu.nd.iekechuk.JavaClassParse;

import java.io.IOException;
import java.net.MalformedURLException;

import com.gargoylesoftware.htmlunit.FailingHttpStatusCodeException;

public class main {

	/**
	 * @param args
	 * @throws IOException 
	 * @throws MalformedURLException 
	 * @throws FailingHttpStatusCodeException 
	 */
	public static void main(String[] args) throws FailingHttpStatusCodeException, MalformedURLException, IOException {
		// TODO Auto-generated method stub
		
		Classes ClassSearch = new Classes("Art Studio");
		
		ClassSearch.testClient();

	}

}

Section.java

package edu.nd.iekechuk.JavaClassParse;

public class Section {
	private String number;
	private String status;
	private String openspots;
	private String maxspots;
	private String instructor;
	private String crn;
	private String time;
	
	//private ArrayList entry = new ArrayList();
	public Section(String number, String status, String maxspots, String openspots, String instructor, String crn, String time) {
		// TODO Auto-generated constructor stub
		this.number = number;
		this.status = status;
		this.maxspots = maxspots;
		this.openspots = openspots;
		this.instructor = instructor;
		this.crn = crn;
		this.time = time;
		//this.entry = Classes.getClasses();
	}

	public String getStatus() {
		return status;
	}

	public void setStatus(String status) {
		this.status = status;
	}

	public String getOpenSpots() {
		return openspots;
	}

	public void setOpenspots(String openspots) {
		this.openspots = openspots;
	}

}