我的java考试系统总是读取试题为空 试题文件采用xml文件
大家帮忙看看 哪里出毛病了 谢谢.
下面是代码
import javax.xml.parsers.*;
import org.w3c.dom.*;
import java.io.*;
import java.util.*;
import java.lang.String;
public class ReadTestquestion
{ static int z;
static String filename ,
correctAnswer = " ",
testContent = " ",
selection = " ",
selection1 = " ";
int score = 0;
long time = 0;
boolean 完成考试 = false;
FileReader in = null;
String te;
Node currentNode, textNode, currentNode1;
NodeList childNodes, childNodes1, childNodes2;
String temp;
String a[] = new String[100];
StringBuffer temp1,temp2;
public void setFilename(String name)
{
filename = name;
score = 0;
selection = " ";
try
{
if (in != null && temp != null)
{
in.close();
}
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document document = builder.parse(new File(filename));
Node root = document.getDocumentElement();
childNodes = root.getChildNodes();
currentNode = childNodes.item(1);
String s = currentNode.getNodeName();
String s1 = currentNode.getNodeValue();
childNodes1 = currentNode.getChildNodes();
textNode = childNodes1.item(0);
String q = textNode.getNodeName();
String temp = textNode.getNodeValue();
StringTokenizer token = new StringTokenizer(temp, ": ");
int hour = Integer.parseInt(token.nextToken());
int minute = Integer.parseInt(token.nextToken());
int second = Integer.parseInt(token.nextToken());
time = 1000 * (second + minute * 60 + hour * 60 * 60);
}
catch (Exception e)
{
System.out.print( "Err happend here. " + e.getMessage());
testContent = "请选择试题文件！ ";
}
}
public String getFilename()
{
return filename;
}
public long getTime()
{
return time;
}
public void set完成考试(boolean b)
{
完成考试 = b;
}
public boolean get完成考试()
{
return 完成考试;
}
public String getTestContent()
{ try
{
DocumentBuilderFactory factory =
DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document document = builder.parse(new File(filename));
Node root = document.getDocumentElement();
childNodes = root.getChildNodes();