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Ray
2026-02-19 03:37:37 +08:00
commit ccfd8c79a4
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package db;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.util.Properties;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
/**
* 读取Properties综合类,默认绑定到classpath下的config.properties文件。
*/
public class PropertiesUtilDB {
private static Logger logger = LogManager.getLogger(PropertiesUtilDB.class);
private static String CONFIG_FILENAME = "config/db.properties";
private static Properties prop = null;
public PropertiesUtilDB() {
if (prop == null) {
loadProperties();
}
};
private synchronized static void loadProperties() {
byte buff[] = null;
try {
// Open the props file
InputStream is = PropertiesUtilDB.class.getResourceAsStream("/" + CONFIG_FILENAME);
prop = new Properties();
// Read in the stored properties
prop.load(is);
} catch (Exception e) {
System.err.println("读取配置文件失败!!!");
prop = null;
logger.error(e.getMessage(), e);
}
}
/**
* 得到属性值
*
* @param key
* @return
*/
public static String getProperty(String key) {
if (prop == null) {
loadProperties();
}
String value = prop.getProperty(key);
if (value == null) {
return null;
}
return value.trim();
}
/**
* 得到内容包含汉字的属性值
*
* @param key
* @return
*/
public static String getGBKProperty(String key) {
String value = getProperty(key);
try {
value = new String(value.getBytes("ISO8859-1"), "GBK");
} catch (UnsupportedEncodingException e) {
}
if (value == null) {
return null;
}
return value.trim();
}
/**
* 得到属性值,
*
* @param key
* @param defaultValue
* @return
*/
public static String getProperty(String key, String defaultValue) {
if (prop == null) {
loadProperties();
}
String value = prop.getProperty(key, defaultValue);
if (value == null) {
return null;
}
return value.trim();
}
/**
* 得到内容包含汉字的属性值,如果不存在则使用默认值
*
* @param key
* @return
*/
public static String getGBKProperty(String key, String defaultValue) {
try {
defaultValue = new String(defaultValue.getBytes("GBK"), "ISO8859-1");
String value = getProperty(key, defaultValue);
value = new String(value.getBytes("ISO8859-1"), "GBK");
if (value == null) {
return null;
}
return value.trim();
} catch (UnsupportedEncodingException e) {
return null;
}
}
public static String getUTFProperty(String key, String defaultValue) {
try {
defaultValue = new String(defaultValue.getBytes("UTF-8"), "ISO8859-1");
String value = getProperty(key, defaultValue);
value = new String(value.getBytes("ISO8859-1"), "UTF-8");
if (value == null) {
return null;
}
return value.trim();
} catch (UnsupportedEncodingException e) {
return null;
}
}
}