Properties 文件读取

package com.java.util;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
* 属性文件工具类
*org.slf4j需要导包bean-validator-3.0-JBoss-4.0.2.jar包
*/
public class PropsUtil {
private static final Logger LOGGER = LoggerFactory.getLogger(PropsUtil.class);

/**
* 加载属性文件
*/
public static Properties loadProps(String fileName) {
Properties props = null;
InputStream is = null;
try {
is = Thread.currentThread().getContextClassLoader().getResourceAsStream(fileName);
if (is == null) {
throw new FileNotFoundException(fileName + " file is not found");
}
props = new Properties();
props.load(is);
} catch (IOException e) {
LOGGER.error("load properties file failure", e);
} finally {
if (is != null) {
try {
is.close();
} catch (IOException e) {
LOGGER.error("close input stream failure", e);
}
}
}
return props;
}

/**
* 获取字符型属性（默认值为空字符串）
*/
public static String getString(Properties props, String key) {
return getString(props, key, "");
}

/**
* 获取字符型属性（可指定默认值）
*/
public static String getString(Properties props, String key, String defaultValue) {
String value = defaultValue;
if (props.containsKey(key)) {
value = props.getProperty(key);
}
return value;
}

/**
* 获取数值型属性（默认值为 0）
*/
public static int getInt(Properties props, String key) {
return getInt(props, key, 0);
}

// 获取数值型属性（可指定默认值）
public static int getInt(Properties props, String key, int defaultValue) {
int value = defaultValue;
if (props.containsKey(key)) {
value = CastUtil.castInt(props.getProperty(key));
}
return value;
}

/**
* 获取布尔型属性（默认值为 false）
*/
public static boolean getBoolean(Properties props, String key) {
return getBoolean(props, key, false);
}

/**
* 获取布尔型属性（可指定默认值）
*/
public static boolean getBoolean(Properties props, String key, boolean defaultValue) {
boolean value = defaultValue;
if (props.containsKey(key)) {
value = CastUtil.castBoolean(props.getProperty(key));
}
return value;
}

/**
* 读取配置文件信息
*/
public void getProperties(){
Properties pro = PropsUtil.loadProps("config/jdbc.properties");
HTTP_URL=pro.getProperty("xahttp.url");
}
}