printerinfo.java

打印管理程序,测试完全通过.windows开发环境.

package jp.co.ntl.printer;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class PrinterInfo implements java.io.Serializable {
	/**
	 * 
	 */

	private static final long serialVersionUID = 1L;
	private String	terminal = null;
	private String	printer = null;

	public PrinterInfo() {
	}
	
	public PrinterInfo(String terminal) {
		this.terminal = terminal;
	}
	
	public String getTerminal() {
		return terminal;
	}
	
	public String getPrinter() {
		return printer;
	}
	
	public void setTerminal(String terminal) {
		this.terminal = terminal;
	}
	
	public void setPrinter(String printer) {
		this.printer = printer;
	}
	
    public void readFromFile(String printerDir, String encoding) throws FileNotFoundException, IOException {
        int index;
        String key, value;
 
        BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(printerDir + File.separator + terminal), encoding));
        String s;
        while ((s = br.readLine()) != null) {
            if ((index = s.indexOf(' ')) == -1) {
                break;
            }
            key = s.substring(0, index);
            value = s.substring(index + 1);
            put(key, value);
        }
        br.close();
    }
    
    public void writeToFile(String printerDir, String encoding) throws IOException {
        OutputStreamWriter osw 
        = new OutputStreamWriter(new FileOutputStream(printerDir + File.separator + terminal), encoding);

        if (terminal != null) {
        	osw.write("printer " + printer + "\n");
        }
     
        osw.flush();
        osw.close();
    }
    
    private void put(String key, String value) {
        if (key.equals("printer")) {
        	setPrinter(value);
        }
    }
}