版权所有 http://www.cnblogs.com/yzssoft/p/8991971.html
做这个的例子太少，我把我做的示例亮出来
一.先说说需要的版本
1.我用的浏览器只有ie：
火狐只支持52版本以下，并且是java7、java8。chrome不支持
2.applet客户端打印，需要java6：
亲自测试，java6需要一些提示是否运行，等都同意后，打印时不用再提示。
在java7、8，我自己测试控制面板里面没有低级，只有高级和超高级，不管什么时候打印，它都会提示是否同意
所以，我最终还是选择了在applet里放入jre6
二.applet的打印代码
1.html,在ie下才可运行
因为执行的时候，需要检查有没有jre6、请求/接受路径、一些传递的参数，运行的class、需要的jar，代码如下：
function is_ie(json, print_type) {
//){
//项目的根路径
var req_path = "http://localhost:8080";
//打印机名
var print_name = "Deli DL-888C";
var str = "JRPrinterApplet";
var archive = 'jbarcodebean-1.2.0.jar,json-20160810.jar,print.jar';
var codebase = '/applets'
var file = '/applets/jre-6u45-windows-i586.exe';
var scriptable = false;
var type = 'application/x-java-applet;version=1.6.0';
var clsid = "";
if (isFamilyVersionSupported()) {
clsid = "clsid:CAFEEFAC-0016-0000-FFFF-ABCDEFFEDCBA";
} else {
clsid = "clsid:CAFEEFAC-0016-0000-0008-ABCDEFFEDCBA";
}
var write = '' +
//'<object classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93" width = "0" height = "0" codebase="'+file+'" mayscript>' +
'<object classid="' + clsid + '" width = "0" height = "0" codebase="' + file + '" mayscript>' +
'<param name = "code" value = "' + str + '.class" >' +
'<param name = "codebase" value = "' + codebase + '" >' +
'<param name = "archive" value = "' + archive + '" >' +
'<param name="type" value="' + type + '">' +
'<param name="scriptable" value="' + scriptable + '">' +
'<param name = "print_type" value ="' + print_type + '">' +
'<param name = "print_name" value ="' + print_name + '">' +
'<param name = "req_path" value ="' + req_path + '">' +
'<param name = "json" value =\'' + json + '\'>' +
'<comment>' +
'<embed type="' + type + '" code="' + str + '.class" java_codebase="' + codebase + '" archive="' + archive + '" scriptable=' + scriptable + ' pluginspage="' + file + '" >' +
'<noembed></noembed>' +
'</embed>' +
'</comment>' +
'</object>';
$("#objectDiv").html(write)
if(print_type=='login_test'){
}
}
2.jre接受请求
需要的文件
（1）JRPrinterApplet.java,太多了，大家慢慢看吧，应该能理解
import net.sourceforge.jbarcodebean.JBarcodeBean;
import net.sourceforge.jbarcodebean.model.Code39;
import net.sourceforge.jbarcodebean.model.Ean13;
import org.json.JSONArray;
import org.json.JSONObject;
import javax.print.PrintService;
import javax.print.PrintServiceLookup;
import javax.swing.*;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.awt.print.*;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import java.text.SimpleDateFormat;
import java.util.Date;
/**
* Created by Administrator on 2018/4/29.
*/
public class JRPrinterApplet extends JApplet implements Printable {
JSONObject jsonObject=new JSONObject();
private int imageWidth = 300; //图片的宽度
@Override
public void init() {
String req_path=this.getParameter("req_path");
String print_type=this.getParameter("print_type");
String print_name=this.getParameter("print_name");
String jsonStr=this.getParameter("json");
//链接测速
if(print_type.equals("login_test")){
System.out.println("****连接测试");
String get=urlGet(req_path+"/print/print_error?type=login_test");
System.out.println(get);
return;
}else if(print_type.equals("print")){
System.out.println("****连接打印");
jsonObject=new JSONObject(jsonStr);
String id=String.valueOf(jsonObject.get("id"));
System.out.println(print_name+" "+req_path+" "+id+" "+print_type+"\n"+jsonStr);
Book book = new Book();
// 设置成竖打
PageFormat pf = new PageFormat();
pf.setOrientation(PageFormat.PORTRAIT); // LANDSCAPE表示竖打;PORTRAIT表示横打;REVERSE_LANDSCAPE表示打印空白
// 通过Paper设置页面的空白边距和可打印区域。必须与实际打印纸张大小相符。
Paper p = new Paper();
p.setSize(imageWidth, 300); // 纸张大小(590, 840)表示A4纸
p.setImageableArea(0, 0, imageWidth, 300); // A4(595 X842)设置打印区域，其实0，0应该是72，72
// ，因为A4纸的默认X,Y边距是72
pf.setPaper(p);
// 把 PageFormat 和 Printable 添加到书中，组成一个页面
book.append(this, pf);
// 获取打印服务对象
PrinterJob.lookupPrintServices();
PrinterJob job = PrinterJob.getPrinterJob();
// 设置打印类
job.setPageable(book);
PrintService[] pss = PrintServiceLookup.lookupPrintServices(null,null);
//PrintService ps=null;
boolean have_ps=false;
for(PrintService printService:pss){
System.out.println("****找到打印机："+printService.toString());
if(printService.toString().contains(print_name)){
try {
System.out.println("----找到对应打印机："+printService.toString());
job.setPrintService(printService);
have_ps=true;
} catch (PrinterException e) {
String services = urlGet(req_path + "/print/print_error?type=Doc_error&id=" + id + "&msg=" + e);
System.out.println(services);
e.printStackTrace();
return;
}
}
}
if(!have_ps){
String var19 = urlGet(req_path + "/print/print_error?type=print_no_find&id=" + id);
System.out.println(var19);
}else{
try {
// 可以用printDialog显示打印对话框，在用户确认后打印；也可以直接打印
/*boolean a=job.printDialog();
if(a)
{
job.print();
}*/
String get=urlGet(req_path + "/print/print_error?type=print_ok&id=" + id);
System.out.println(get);
job.print();
} catch (PrinterException e) {
String get = urlGet(req_path + "/print/print_error?type=print_is_error&id=" + id + "&msg=" + e);
System.out.println(get);
e.printStackTrace();
}
}
}
}
public int print(Graphics gra, PageFormat pf, int pageIndex) throws PrinterException {
Component c = null;
Graphics2D g2 = (Graphics2D) gra;
double x = pf.getImageableX();
double y = pf.getImageableY();
switch (pageIndex) {
case 0:
g2.drawImage(graphicsGeneration(jsonObject), (int) x, (int) y, c);
return PAGE_EXISTS;
default:
return NO_SUCH_PAGE;
}
}
public BufferedImage graphicsGeneration(JSONObject jsonObject) {
String id=String.valueOf(jsonObject.get("id"));
String name=String.valueOf(jsonObject.get("name"));
JSONArray array=jsonObject.getJSONArray("list");
int title_h=20;
int left_long=10;
int row=1;
int i;
int imageHeight=title_h*(row+7)+80;
BufferedImage image = new BufferedImage(imageWidth, imageHeight, BufferedImage.TYPE_INT_RGB);
//设置图片的背景色
Graphics2D main = image.createGraphics();
main.setColor(Color.white);
main.fillRect(0, 0, imageWidth, imageHeight);
//***********************页面头部
Graphics g = image.createGraphics();
g.fillRect(0, 0, imageWidth, title_h);
g.setColor(Color.white);
Font font = new Font("宋体", Font.BOLD, 14);
g.setFont(font);
g.setColor(Color.BLACK);
g.drawString("***道口义兴张祥记烧鸡老铺***", 50, title_h*row+++3);
//其他内容
font = new Font("宋体", Font.PLAIN, 12);
g.setFont(font);
g.drawString("单号："+id,left_long,title_h*row);
g.drawString("时间："+new SimpleDateFormat("MM月dd日 HH:mm:ss").format(new Date()),imageWidth/2,title_h*row++);
g.drawString("收货人："+name,left_long,title_h*row++);
g.drawLine(5,65,295,65);
for(i=0;i<array.length();i++){
JSONObject o= (JSONObject) array.get(i);
g.drawString((i+1)+".",left_long,title_h*row);
g.drawString(o.get("name")+" x"+o.get("num"),left_long+15,title_h*row);
String unit="";
if(o.get("unit")!=null&&!o.get("unit").equals("")){
unit="/"+o.get("unit");
}
g.drawString(o.get("money")+unit,240,title_h*row);
row++;
}
//生成条维码
JBarcodeBean jBarcodeBean = new JBarcodeBean();
// 条形码类型
//jBarcodeBean.setCodeType(new Ean13());
jBarcodeBean.setCodeType(new Code39());
// 在条形码下面显示文字
jBarcodeBean.setLabelPosition(JBarcodeBean.LABEL_BOTTOM);
jBarcodeBean.setCode(id);
jBarcodeBean.setBarcodeHeight(50);
//条维码
BufferedImage tiao_wei_ma = new BufferedImage(300, 80, BufferedImage.TYPE_INT_RGB);
tiao_wei_ma = jBarcodeBean.draw(tiao_wei_ma);
//***********************插入图片
Graphics mainPic = image.getGraphics();
if(tiao_wei_ma!=null){
mainPic.drawImage(tiao_wei_ma,0,title_h*(row-1),null);
mainPic.dispose();
}
//createImage("F:\\temp/hehe.jpg",image);
return image;
}
/**
* 向指定URL发送GET方法的请求
*
*/
public static String urlGet(String url) {
BufferedReader in = null;
try {
URL realUrl = new URL(url);
// 打开和URL之间的连接
URLConnection connection = realUrl.openConnection();
// 设置通用的请求属性
connection.setRequestProperty("accept", "*/*");
connection.setRequestProperty("connection", "Keep-Alive");
connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
connection.setConnectTimeout(5000);
connection.setReadTimeout(5000);
// 建立实际的连接
connection.connect();
// 定义 BufferedReader输入流来读取URL的响应
in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
StringBuffer sb = new StringBuffer();
String line;
while ((line = in.readLine()) != null) {
sb.append(line);
}
return sb.toString();
} catch (Exception e) {
System.out.println(e);
}
// 使用finally块来关闭输入流
finally {
try {
if (in != null) {
in.close();
}
} catch (Exception e2) {
e2.printStackTrace();
}
}
return null;
}
}
一定要用java6生成class，要不然applet的java6不支持
(1).将class生成jar，我命名print.jar
(2).jar -cvf print.jar *.class (生成jar包)，放入applets
5.签名
1.创建一个证书
keytool -genkey -validity 1800 -keystore applet.store -alias applet
2.导出证书文件
keytool -export -keystore applet.store -alias applet -file applet.cer
3.对jar包进行签名
jarsigner -keystore applet.store jbarcodebean-1.2.0.jar applet
jarsigner -keystore applet.store json-20160810.jar applet
jarsigner -keystore applet.store print.jar applet
6.将上面图的那些文件放入applet
来源：https://www.cnblogs.com/yzssoft/p/8991971.html