LocalTransfer/src/main/java/com/cmyy/localtransfer/LocalTransferApplication.java

package com.cmyy.localtransfer;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.core.env.Environment;

import java.io.*;

@SpringBootApplication
public class LocalTransferApplication {

    private static final Logger LOG =  LoggerFactory.getLogger(LocalTransferApplication.class);
    public static void main(String[] args) {
        System.setProperty("jna.encoding", "GBK");
        loadNative("NationECCode");
        SpringApplication.run(LocalTransferApplication.class, args);
        System.out.println(
                "   ____   _____ ___.__.___.__.  \n" +
                        " _/ ___\\ /     <   |  <   |  |   \n" +
                        " \\  \\___|  Y Y  \\___  |\\___  |   \n" +
                        "  \\___  >__|_|  / ____|/ ____|   \n" +
                        "      \\/      \\/\\/     \\/         \n" +
                        "\n成美药业医保电子凭证解码中转台启动成功 \n官网：http://www.chengmeimedicine.com 提供技术支持ﾞ  \n");

    }


    private synchronized static void loadNative(String nativeName) {

        String systemType = System.getProperty("os.name");
        String fileExt = (systemType.toLowerCase().indexOf("win") != -1) ? ".dll" : ".so";
        File path = new File(".");
        //将所有动态链接库dll/so文件都放在一个临时文件夹下，然后进行加载
        //这是应为项目为可执行jar文件的时候不能很方便的扫描里面文件
        //此目录放置在与项目同目录下的natives文件夹下
        String sysUserTempDir = path.getAbsoluteFile().getParent() + File.separator + "natives";

        //System.out.println("------>>native lib临时存放目录 : " + sysUserTempDir);
        String fileName = nativeName + fileExt;

        InputStream in = null;
        BufferedInputStream reader = null;
        FileOutputStream writer = null;

        File tempFile = new File(sysUserTempDir + File.separator + fileName);
        if(!tempFile.getParentFile().exists())
            tempFile.getParentFile().mkdirs() ;
        if (tempFile.exists()) {
            tempFile.delete();
        }
        try {
            //读取文件形成输入流
            in = LocalTransferApplication.class.getClassLoader().getResourceAsStream("/native/" + fileName);
            if (in == null)
                in = LocalTransferApplication.class.getClassLoader().getResourceAsStream("native/" + fileName);
            LocalTransferApplication.class.getClassLoader().getResource(fileName);
            reader = new BufferedInputStream(in);
            writer = new FileOutputStream(tempFile);

            byte[] buffer = new byte[1024];

            while (reader.read(buffer) > 0) {
                writer.write(buffer);
                buffer = new byte[1024];
            }

        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (in != null)
                    in.close();
                if (writer != null)
                    writer.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        System.load(tempFile.getPath());
        System.out.println("------>> 加载native文件 :" + tempFile + "成功!!");
    }
}