获取Properties文件

package com.chinamobile.epic.tako.v2.query.commons;

import org.springframework.core.io.ClassPathResource;

import org.springframework.core.io.Resource;

import org.springframework.core.io.support.PropertiesLoaderUtils;

import java.io.*;

import java.util.Iterator;

import java.util.Map;

import java.util.Properties;

import java.util.concurrent.ConcurrentHashMap;

public class PropertiesUtilsBase {

    /**

     * 获取属性文件

     * @param path example: c:\\my.properties

     * @return

     */

    public static Properties loadFromFileSystem(String path) {

        Properties props = new Properties();

        try {

            File file = new File(path);

            InputStream in = new BufferedInputStream(new FileInputStream(file));

            //解决中午乱码问题--因为字节流无法读取中文，所以采用reader把inputStream转换成reader用字符流来读取中文

            BufferedReader bf = new BufferedReader(new InputStreamReader(in));

            props.load(bf);

            in.close();

        } catch (Exception e) {

            return null;

        }

        return props;

    }

    /**

     * 从classpath中获取属性文件

     *

     * @param path graphite/graphiteTargets.properties

     * @return

     */

    public static Properties loadFromClassPath(String path) {

        Resource resource = new ClassPathResource(path);

        Properties prop = null;

        try {

            prop = PropertiesLoaderUtils.loadProperties(resource);

        } catch (IOException e) {

            e.printStackTrace();

        }

        return prop;

    }

    public static Map<String, String> asMap(Properties properties) {

        if (properties == null) {

            return null;

        }

        Map<String, String> entryMap = new ConcurrentHashMap<String, String>();

        for (Map.Entry<Object, Object> entry : properties.entrySet()) {

            String key = entry.getKey().toString();

            String value = entry.getValue().toString();

            entryMap.put(key, value);

        }

        return entryMap;

    }

    /**

     * 显示所有key，value

     *

     * @param properties

     */

    public static void showKeysAndValues(Properties properties) {

        if (properties == null) {

            System.out.println("properties == null");

            return;

        }

        Iterator<Map.Entry<Object, Object>> it = properties.entrySet().iterator();

        System.out.println("======下面将显示所有<key,value>值---方式1============");

        while (it.hasNext()) {

            Map.Entry<Object, Object> entry = it.next();

            Object key = entry.getKey().toString();

            Object value = entry.getValue();

            System.out.println("<" + key + "," + value + ">");

        }

    }

}

---

使用@Bean方式获取Properties

   @Bean

    public Properties quartzProperties() throws IOException {

        PropertiesFactoryBean propertiesFactoryBean = new PropertiesFactoryBean();

        propertiesFactoryBean.setLocation(new ClassPathResource("/quartz.properties"));

        propertiesFactoryBean.afterPropertiesSet();

        return propertiesFactoryBean.getObject();

    }