使用JNative对条码打印机进行打印

Posted 2021-05-16 royal_coffee

 

因项目需要，对Godex  EZ2300条码机进行调用打印, 驱动为Ez2000.dll, 用JNI可以实现调用，但比较麻烦, 需

要用到VC6进行DLL封装，改用JNative组件进行调用, 步骤如下:

1. 下载JNative-1.3.2.zip组件库

2. 解压出来后有JNative.jar  /  JNativeCpp.dll  /  libJNativeCpp.so三个文件，JNative.jar置于%JAVA_HOME%/jre/lib/ext目录下, JNativeCpp.dll置于%SYSTEM%/WINDOWS/SYSTEM32目录下

3.将Ez2000.dll置于%SYSTEM%/WINDOWS/SYSTEM32目录以及%JAVA_HOME%/jdk/bin目录下

4.

具体Java代码如下:

package  com.athens.test;

import  org.xvolks.jnative.JNative;
import  org.xvolks.jnative.Type;
import  org.xvolks.jnative.exceptions.NativeException;

public   class  Demo {
    
     private   static   final  String PRINTER_DLL  =   " Ez2000.dll " ;
    
     public   static   void  main(String [] args) {
        Demo demo  =   new  Demo();
        System.loadLibrary( " Ez2000 " );
        JNative n  =   null ;
         try  {
            n  =  demo.getJNativeByFunction( " isready " );
            n.setRetVal(Type.INT);
//           n.setParameter(1, Type.VOID, "");    
            n.invoke();
            Integer isready  =  Integer.parseInt(n.getRetVal());
             if (isready  ==   1 ){
                
                System.out.println( " 条码机可以开始接收资料!Starting... " );
                System.out.println( " Starting... " );
                 //  打开端口
                n  =  demo.getJNativeByFunction( " openport " );
                n.setParameter( 0 , Type.STRING,  " 0 " );
                n.invoke();
                
                 //  设定参数
                n  =  demo.getJNativeByFunction( " setup " );
                n.setRetVal(Type.INT);
                n.setParameter( 0 , Type.INT,  " 30 " );
                n.setParameter( 0 , Type.INT,  " 7 " );
                n.setParameter( 0 , Type.INT,  " 2 " );
                n.setParameter( 0 , Type.INT,  " 1 " );
                n.setParameter( 0 , Type.INT,  " 0 " );
                n.setParameter( 0 , Type.INT,  " 0 " );
                n.invoke();
                
                 //  发出指令
                n  =  demo.getJNativeByFunction( " sendcommand " );
                n.setRetVal(Type.INT);
                n.setParameter( 0 , Type.STRING,  " W70 " );
                n.invoke();
                
                n.setRetVal(Type.INT);
                n.setParameter( 0 , Type.STRING,  " ^P1 " );
                n.invoke();
                
                n.setRetVal(Type.INT);
                n.setParameter( 0 , Type.STRING,  " ^L " );
                n.invoke();
                
                n.setRetVal(Type.INT);
                n.setParameter( 0 , Type.STRING,  " AC,20,60,1,1,1,0,TEST " );
                n.invoke();
                
                 //  发送条形码
                n  =  demo.getJNativeByFunction( " ecTextOut " );
                n.setParameter( 0 , Type.INT,  " 20 " );
                n.setParameter( 1 , Type.INT,  " 10 " );
                n.setParameter( 2 , Type.INT,  " 34 " );
                n.setParameter( 3 , Type.STRING,  " 标楷体 " );
                n.setParameter( 4 , Type.STRING,  " Athens Testing Successlly!!! " );
                n.invoke();
                
                 //  发出指令
                n  =  demo.getJNativeByFunction( " sendcommand " );
                n.setRetVal(Type.INT);
                n.setParameter( 0 , Type.STRING,  " E " );
                n.invoke();
                
                 //  关闭端口
                n  =  demo.getJNativeByFunction( " closeport " );
                n.invoke();
                System.out.println( " Ending... " );
            } else {
                System.out.println( " 条码机无法接收资料! " );
            }
        } catch (Exception e){
            e.printStackTrace();
        } finally {
             if  (n  !=   null ){
                 try  {
                    n.dispose();
                }  catch  (NativeException e) {
                    e.printStackTrace();
                }  catch  (IllegalAccessException e) {
                    e.printStackTrace();
                }
            }
        }
    }
    
     //  通过方法名取得JNative对象
     public  JNative getJNativeByFunction(String functionName)  throws  NativeException{
         return   new  JNative(PRINTER_DLL, functionName);
    }
}