wildfly 在 jee war 外部写配置文件

有时需要写属性文件，保存配置值，当然也可以写在数据库。这里我们用文件方式。

最简单做法：

写在wildfly的配置目录里面：

   File confDir = new File(System.getProperty("jboss.server.config.dir"));
        logger.info("jboss.server.config.dir:" + confDir);
        fileProp = new File(confDir, "stats.properties");

package com.italktv.colnv.stat.task;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
import java.util.logging.Logger;

import javax.annotation.PostConstruct;
import javax.annotation.Resource;
import javax.ejb.ScheduleExpression;
import javax.ejb.Singleton;
import javax.ejb.Startup;
import javax.ejb.Timeout;
import javax.ejb.Timer;
import javax.ejb.TimerConfig;
import javax.ejb.TimerService;
import javax.inject.Inject;

@Singleton
@Startup
public class CustomTimerService {

    @Inject
    private Logger logger;

    @Resource
    private TimerService timerService;

    @Inject
    private JobStarter job;

    File fileProp;
    Properties prop;

    @PostConstruct
    public void initTimer() {
        File confDir = new File(System.getProperty("jboss.server.config.dir"));
        logger.info("jboss.server.config.dir:" + confDir);
        fileProp = new File(confDir, "stats.properties");
        prop = read();
        setTimber(prop.getProperty("hour", "6"), prop.getProperty("minute", "0"), prop.getProperty("second", "0"));
    }

    public boolean setTimber(String hour, String minute, String second) {
        boolean suc = true;
        hour = hour.trim();
        minute = minute.trim();
        if (minute.equals("*") && hour.equals("*"))
            return false;

        if (timerService.getTimers() != null) {
            for (Timer timer : timerService.getTimers()) {

                logger.info("Cancel timer:" + timer.getInfo().toString() + timer.getSchedule().toString());
                timer.cancel();
            }
        }
        try {
            timerService.createCalendarTimer(new ScheduleExpression().hour(hour).minute(minute).second(second), new TimerConfig("定时统计任务",
                    false));
        } catch (Exception e) {
            e.printStackTrace();
            suc = false;
        }
        if (suc) {
            save(hour, minute, second);
        }
        return suc;
    }

    private void cancelTimers() {
        for (Timer timer : timerService.getTimers()) {
            // timer.cancel();
        }
    }

    public String getTimerInfo() {
        StringBuffer sb = new StringBuffer();
        if (timerService.getTimers() != null) {
            for (Timer timer : timerService.getTimers()) {
                sb.append("任务每天执行时间：");
                sb.append(timer.getSchedule().getHour() + "点" + timer.getSchedule().getMinute() + "分");
            }
        }
        return sb.toString();
    }

    private void save(String hour, String minute, String second) {
        prop.setProperty("hour", hour);
        prop.setProperty("minute", minute);
        prop.setProperty("second", second);

        try {
            FileWriter f = new FileWriter(fileProp);
            prop.store(f, prop.toString());
            f.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private Properties read() {

        InputStream in = null;
        Properties properties = new Properties();
        if (fileProp.exists()) {
            try {
                in = new FileInputStream(fileProp);
                properties.load(in);
                logger.info("properties:" + properties.toString());
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                try {
                    in.close();
                } catch (Exception ignored) {
                }
            }
        } else {
            logger.info("not exist:" + fileProp.getAbsolutePath());
        }
        return properties;
    }

    @Timeout
    public void timeout(Timer timer) {
        logger.info("=== job " + " started ====");
        String id = job.start();
        logger.info("=== job id： " + id);
    }

}

用cdi的复杂做法：

http://piotrnowicki.com/2012/06/inject-java-properties-in-java-ee-using-cdi/

https://blog.jyore.com/2013/05/jboss-eap6as7wildfly-how-to-use-properties-files-outside-your-archive/