itemmanager.java

J2EE独立开发制作

package xmlMenu;

import java.util.*;
import java.io.*;
import javax.servlet.jsp.PageContext;
import javax.servlet.*;
/**
 * @author Administrator
 *
 * TODO 要更改此生成的类型注释的模板，请转至
 * 窗口 － 首选项 － Java － 代码样式 － 代码模板
 */
public class ItemManager {
    private Vector m_vector = new Vector();
    
    protected ServletContext m_application;
    
    private boolean m_denyPhysicalPath; 

    public ItemManager()
    {
    }
    
    public final void initialize(PageContext pageContext)
    	throws ServletException 
    {
        m_application = pageContext.getServletContext(); 
    }
    
    private boolean isVirtual(String pathName) //判断是否是虚拟路径 
    { 
        if(m_application.getRealPath(pathName) != null) 
        { 
            java.io.File virtualFile = new java.io.File(m_application.getRealPath(pathName)); 
            return virtualFile.exists(); 
        } 
        else 
        { 
            return false; 
        } 
    } 

    private String getPhysicalPath(String filePathName, int option) 
    	throws IOException 
    { 
        String path = new String(); 
        String fileName = new String(); 
        String fileSeparator = new String(); 
        boolean isPhysical = false; 
        fileSeparator=System.getProperty("file.separator"); 
/*        if(filePathName == null)
        {
            throw new IllegalArgumentException("There is no specified destination file (1140).");
        }
        if(filePathName.equals(""))
        {
            throw new IllegalArgumentException("There is no specified destination file (1140).");
        }
//*/ 
               if(filePathName.lastIndexOf("\\") >= 0) 
        { 
            path = filePathName.substring(0, filePathName.lastIndexOf("\\")); 
            fileName = filePathName.substring(filePathName.lastIndexOf("\\") + 1); 
        } 
        if(filePathName.lastIndexOf("/") >= 0) 
        { 
            path = filePathName.substring(0, filePathName.lastIndexOf("/")); 
            fileName = filePathName.substring(filePathName.lastIndexOf("/") + 1); 
        } 
        path = path.length() != 0 ? path : "/"; 
        java.io.File physicalPath = new java.io.File(path); 
        if(physicalPath.exists())
        {
            isPhysical = true;
        }
        if(option == 0) 
        { 
            if(isVirtual(path)) 
            { 
                path = m_application.getRealPath(path); 
                if(path.endsWith(fileSeparator)) 
                    path = path + fileName; 
                else 
                    path = String.valueOf((new StringBuffer(String.valueOf(path))).append(fileSeparator).append(fileName)); 
                return path; 
            } 
            if(isPhysical) 
            { 
                if(m_denyPhysicalPath) 
                    throw new IllegalArgumentException("Physical path is denied (1125)."); 
                else 
                    return filePathName; 
            }
            else 
            { 
                throw new IllegalArgumentException("This path does not exist (1135)."); 
            } 
        } 
        if(option == 1) 
        { 
            if(isVirtual(path)) 
            { 
                path = m_application.getRealPath(path); 
                if(path.endsWith(fileSeparator)) 
                    path = path + fileName; 
                else 
                    path = String.valueOf((new StringBuffer(String.valueOf(path))).append(fileSeparator).append(fileName)); 
                return path; 
            } 
            if(isPhysical) 
                throw new IllegalArgumentException("The path is not a virtual path."); 
            else 
                throw new IllegalArgumentException("This path does not exist (1135)."); 
        } 
        if(option == 2) 
        { 
            if(isPhysical) 
                if(m_denyPhysicalPath) 
                    throw new IllegalArgumentException("Physical path is denied (1125)."); 
                else 
                    return filePathName; 
            if(isVirtual(path)) 
                throw new IllegalArgumentException("The path is not a physical path."); 
            else 
                throw new IllegalArgumentException("This path does not exist (1135)."); 
        } 
        else 
        { 
            return null; 
        } 
    } 
    
    public void initVector()
    {
        try
        {
            String path = getPhysicalPath("",0);
            String filename = path + "items.txt";
	        FileReader fileReader = new FileReader(filename);
	        BufferedReader in = new BufferedReader(fileReader);
	        String type, title, url, str = new String();
	        do{
	            type = in.readLine();
	            title = in.readLine();
	            url = in.readLine();
	            str = in.readLine();
	            if (type==null || title==null || url==null)
	                break;
	            item it = new item();
	            it.setType(type);
	            it.setUrl(url);
	            it.setTitle(title);
	            
	            m_vector.addElement(it);
	                       
	        }while(true);
	        
	        in.close();
        }
        catch(FileNotFoundException e) 
        {
            System.out.println("File Not Found");
                  
        }   
        catch(IOException e)
        {
            System.out.println("End of stream");
        }
    }
    
    public Vector getOneVector(String string)
    {
        Vector vt = new Vector();
        int size = m_vector.size();
        for(int i=0; i<size; i++)
        {
            item item1 = (item)m_vector.elementAt(i);
            item item2 = new item();
            if (item1.getType().equalsIgnoreCase(string))
            {
                item2.setTitle(item1.getTitle());
                item2.setType(item1.getType());
                item2.setUrl(item1.getUrl());
                vt.addElement(item2);
            }
        }
        return vt;
    }
    
    public Vector getMenuVector()
    {
        Vector vc = new Vector();
        int size = m_vector.size();
        for(int i=0; i<size; i++)
        {
            item item1 = (item)m_vector.elementAt(i);
            boolean isFind = false;
            int size1 = vc.size();
            String strMenu = new String();
            strMenu = item1.getType();
            for(int j=0; j<size1; j++)
            {
                String str = (String)vc.elementAt(j);
                if (strMenu.equalsIgnoreCase(str))
                {
                    isFind = true;
                    break;
                }
            }
            if (isFind == false)
            {
                vc.add(strMenu);
            }
        }
        return vc;
    }
}