M使用以下代码进行打印,但如果我的文本文件中有一些长行,则在打印时会从侧面剪切。我做错了什么?
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import javax.print.Doc;
import javax.print.DocFlavor;
import javax.print.DocPrintJob;
import javax.print.PrintException;
import javax.print.PrintService;
import javax.print.PrintServiceLookup;
import javax.print.SimpleDoc;
import javax.print.attribute.HashPrintRequestAttributeSet;
import javax.print.attribute.PrintRequestAttributeSet;
import javax.print.attribute.standard.Copies;
import javax.print.attribute.standard.MediaSizeName;
import javax.print.attribute.standard.OrientationRequested;
public class PrintFileWithSpec {
public static void printFile(String filename,String printerindx){
FileInputStream psStream=null;
int Printerinx=Integer.parseInt(printerindx);
try {
psStream = new FileInputStream(filename);
} catch (FileNotFoundException ffne) {}
if (psStream == null) {
return;
}
DocFlavor psInFormat = null;
int index=filename.lastIndexOf(".");
String extension=filename.substring(index+1);
if(extension.equals("txt"))//||extension.equals("log")||extension.equals("xml")||extension.equals("htm")||extension.equals("html"))
psInFormat = DocFlavor.INPUT_STREAM.AUTOSENSE;
else if(extension.equals("jpg"))
psInFormat = DocFlavor.INPUT_STREAM.JPEG;
else if(extension.equals("png"))
psInFormat = DocFlavor.INPUT_STREAM.PNG;
else if(extension.equals("gif"))
psInFormat = DocFlavor.INPUT_STREAM.GIF;
Doc myDoc = new SimpleDoc(psStream, psInFormat, null);
PrintRequestAttributeSet aset =
new HashPrintRequestAttributeSet();
aset.add(new Copies(1));
aset.add(MediaSizeName.ISO_A4);
//aset.add(Sides.DUPLEX);
aset.add(OrientationRequested.PORTRAIT);
PrintService[] services =
PrintServiceLookup.lookupPrintServices(psInFormat, null);
System.out.println("Printer Selected "+services[Printerinx]);
//PrintService defaultService = PrintServiceLookup.lookupDefaultPrintService();
DocFlavor[] docFalvor = services[Printerinx].getSupportedDocFlavors();
for (int i = 0; i < docFalvor.length; i++) {
System.out.println(docFalvor[i].getMimeType());
}
if (services.length > 0) {
DocPrintJob job = services[Printerinx].createPrintJob();
try
{
job.print(myDoc, aset);
System.out.print("Printing Doc");
} catch (PrintException pe)
{
System.out.print(pe);
}
}
}
public static void main(String [] args)
{
printFile("D:/testStream.txt","3");
}
}
答案 0 :(得分:1)
您必须自己处理文本文件的换行。 javadoc for DocFlavor
说:
此外,每个Java Print Service实例都必须满足处理纯文本打印数据的这些要求:
- 字符对回车换行符(CR-LF)表示“转到下一行的第1列。”
- 回车(CR)字符本身意味着“转到下一行的第1列。”
- 换行(CR)字符本身意味着“转到下一行的第1列”。 *
客户端必须自己执行上述要求未解决的所有纯文本打印数据格式。