1、创建工具类
import java.io.IOException;
import java.util.Properties; /**
*
* 类名称：PropertiesUtil
* 类描述： 文件读取类
* 创建人：Jxufe HeHaiYang
* 创建时间：2015-1-20 下午03:14:02
* 修改备注：
* @version
*/
public class PropertiesUtil { private static Properties properties=new Properties(); private static PropertiesUtil propertiesUtil; private PropertiesUtil(){
} private static void loadFile(String filename){
try {
properties.load(PropertiesUtil.class.getResourceAsStream("/"+filename));
} catch (IOException e) {
e.printStackTrace();
}
} public static synchronized PropertiesUtil createPropertiesUtil(String filename){
if (propertiesUtil==null) {
propertiesUtil=new PropertiesUtil();
}
loadFile(filename);
return propertiesUtil;
} public String getProperty(String key){
return properties.getProperty(key);
} public static void main(String[] args) {
PropertiesUtil propertiesUtil=PropertiesUtil.createPropertiesUtil("upload.properties");
System.out.println(propertiesUtil.getProperty("path"));
}
}
PropertiesUtil.java
2、使用全局变量
/**
*
* 类名称：Constant
* 类描述： 全局静态变量
* 创建人：Jxufe HeHaiYang
* 创建时间：2015-1-21 下午01:53:47
* 修改备注：
* @version
*/
public class Constant { public static final String UPLOADPATH_FILE="upload.properties"; public static final String UPLOADPATH_PATH="path"; }
3、调用工具类
读取定义的upload.properties文件
PropertiesUtil pUtil = PropertiesUtil
.createPropertiesUtil(Constant.UPLOADPATH_FILE);
取出定义的path的值
pUtil.getProperty(Constant.UPLOADPATH_PATH);