java如何判断系统是否安装打印机，打印机是否可以使用？

[wyj1983]

如题所叙。。。

[wangzhichao_king]

没使用过对硬件编程，帮忙顶一下。

[lanzhengwu]

试试这个：   
  if   (window.print!=   null){   
  window.print();   }   
  else   {   
  alert('您没有安装打印机，请安装后继续！');   }

如果是WEB项目建议用JS..

[duoduo6153]

import javax.print.PrintService;
import javax.print.PrintServiceLookup;
import javax.print.attribute.HashAttributeSet;
import javax.print.attribute.standard.PrinterName;

public boolean findPrinter(String printerName) {
HashAttributeSet hash = new HashAttributeSet(); // 存储打印机属性的集合
has.add(new PrinterName(printerName, null)); // 添加打印机名称属性，这个名称是你在配置打印机硬件时指定的名称
PrintService[] pss = PrintServiceLookup.lookupPrintServices(null, has); // 查找可用的打印机服务并不指定自定的打印格式
if (pss.length == 0) {
System.out.println("没有这个打印机");
} else {
System.out.println("找到打印机");
}
}

[duoduo6153]

import javax.print.PrintService;
import javax.print.PrintServiceLookup;
import javax.print.attribute.HashAttributeSet;
import javax.print.attribute.standard.PrinterName;

public boolean findPrinter(String printerName) {
HashAttributeSet hash = new HashAttributeSet(); // 存储打印机属性的集合
has.add(new PrinterName(printerName, null)); // 添加打印机名称属性，这个名称是你在配置打印机硬件时指定的名称
PrintService[] pss = PrintServiceLookup.lookupPrintServices(null, has); // 查找可用的打印机服务并不指定自定的打印格式
if (pss.length == 0) {
return false; // 没有
} else {
return true; // 找到
}
}

[老紫竹]

JAVA与打印机

[抬头望远，低头沉思]

java指定打印机名称进行打印

import java.awt.print.PrinterJob;
import java.awt.print.Book;
import java.awt.print.Printable;
import java.awt.Graphics;
import java.awt.print.PageFormat;
import java.awt.print.PrinterException;
import javax.print.PrintService;
import javax.print.PrintServiceLookup;
import java.awt.Graphics2D;
import java.awt.Color;
import java.awt.Font;
import javax.print.attribute.HashAttributeSet;
import javax.print.attribute.standard.PrinterName;

public class MyPrintTest
implements Printable
{
public int print(Graphics graphics, PageFormat pageFormat, int pageIndex)
throws PrinterException
{
Graphics2D g2 = (Graphics2D) graphics;
g2.setPaint(Color.black);
g2.translate(pageFormat.getImageableX(), pageFormat.getImageableY());
Font font = new Font("宋体", Font.BOLD, 10);
g2.setFont(font);
g2.drawString("afasdfad", 10, 10);
font = new Font("黑体", Font.ITALIC, 18);
g2.setFont(font);
g2.drawString("第二行:", 10, 40);
return Printable.PAGE_EXISTS;
}

public static void main(String[] args)
{
MyPrintTest myprinttest = new MyPrintTest();
myprinttest.print();
}

public void print()
{
PrinterJob printerJob = PrinterJob.getPrinterJob();
Book book = new Book();
book.append(new MyPrintTest(), printerJob.defaultPage());
printerJob.setPageable(book);
HashAttributeSet hs = new HashAttributeSet();
String printerName="EPSON TM-U220 Receipt";
hs.add(new PrinterName(printerName,null));
PrintService[] pss = PrintServiceLookup.lookupPrintServices(null, hs);
if(pss.length==0)
{
System.out.println("无法找到打印机:"+printerName);
return ;
}
try
{
printerJob.setPrintService(pss[0]);
printerJob.print();
} catch (PrinterException ex)
{
System.out.println(ex.getMessage());
}
}
}

[Rachael1001]

也可以这样
java通过jni调用打印机的dll

[wrlbw]

xiexiexiexiehehehehhehehehheh

[lyjavas]

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