java怎么实现打印机监控 -凯发k8国际

import java.awt.color;
import java.awt.graphics;
import java.awt.graphics2d;
import java.awt.print.pageformat;
import java.awt.print.printable;
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.printserviceattributeset;
import javax.print.attribute.standard.mediaprintablearea;
import javax.print.attribute.standard.printerstatereasons;
import javax.print.event.printjobevent;
import javax.print.event.printjoblistener;
import javax.print.event.printserviceattributeevent;
import javax.print.event.printserviceattributelistener;
import com.insigma.afc.common.loghelper;
public class textprinter implements printable {
    private static final loghelper s_log = new loghelper(textprinter.class);
    // 半角下的中文字符
    public static final short half_chinese = 0;
    // 半角下的英文字符
    public static final short half_english = 1;
    protected string text;
    protected string seperator;
    public textprinter() {
    }
    public void print(string text, string seperator) {
        this.text = text;
        this.seperator = seperator;
        docflavor flavor = docflavor.service_formatted.printable;
        printrequestattributeset aset = new hashprintrequestattributeset();
        aset.add(new mediaprintablearea(20, 20, 700, 700, mediaprintablearea.mm));
        printservice services = printservicelookup.lookupdefaultprintservice();
        if (services != null) {
            docprintjob pj = services.createprintjob();
            services.addprintserviceattributelistener(new printserviceattributelistener() {
                public void attributeupdate(printserviceattributeevent psae) {
                    printserviceattributeset attribute = psae.getattributes();
                }
            });
            pj.addprintjoblistener(new printjoblistener() {
                public void printdatatransfercompleted(printjobevent pje) {
                    s_log.info("111111111111  "   pje.getprinteventtype());
                }
                public void printjobcanceled(printjobevent pje) {
                    s_log.info("22222222222222222  "   pje.getprinteventtype());
                }
                public void printjobcompleted(printjobevent pje) {
                    s_log.info("33333333333333  "   pje.getprinteventtype());
                }
                public void printjobfailed(printjobevent pje) {
                    s_log.info("444444444444444  "   pje.getprinteventtype());
                }
                public void printjobnomoreevents(printjobevent pje) {
                    s_log.info("5555555555555555555  "   pje.getprinteventtype());
                    system.out.println("打印失败："   pje.job_failed);
                    system.out.println("没有事件："   pje.no_more_events);
                }
                public void printjobrequiresattention(printjobevent pje) {
                    s_log.info("66666666666666666666  "   pje.getprinteventtype());
                }
            });
            try {
                doc doc = new simpledoc(this, flavor, null);
                pj.print(doc, aset);
                printerstatereasons printerstatereasons = services
                        .getattribute(printerstatereasons.class);
                system.out.println("-----------"   printerstatereasons);
            } catch (printexception e) {
                e.printstacktrace();
                system.err.println(e);
            }
        } else {
            s_log.info("未找到打印机。");
        }
    }
    public int print(graphics g, pageformat pf, int pageindex) {
        if (pageindex == 0) {
            graphics2d g2d = (graphics2d) g;
            g2d.translate(pf.getimageablex(), pf.getimageabley());
            g2d.setcolor(color.black);
            string[] lines = text.split(seperator);
            for (int i = 0; i < lines.length; i  ) {
                g2d.drawstring(lines[i], 0, (i   1) * 20);
            }
            return printable.page_exists;
        } else {
            return printable.no_such_page;
        }
    }
    /**
     * 为中文字符对齐补空格（打印对齐时候用）
     * 
     * @param content
     *            需要补空格的字符
     * @param expectlength
     *            占用的最大长度
     * @param type
     *            字符的类型：中文、英文
     * @return
     */
    public static string validchinesestring(string content, int expectlength, short type) {
        string resultstring = content.trim();
        string space = null;
        switch (type) {
        case half_chinese: {
            space = " ";
            break;
        }
        case half_english: {
            space = " ";
            break;
        }
        default:
            break;
        }
        int contentlength = content.length();
        if (contentlength < expectlength) {
            int different = expectlength - contentlength;
            for (int i = 0; i < different; i  ) {
                resultstring  = space;
            }
        }
        system.out.println(content   "    "   resultstring);
        return resultstring;
    }
}