读取配置文件的工具类

public class PropertiesUtil {
/**
* Logger for this class
*/
private static final Logger logger = LoggerFactory.getLogger(PropertiesUtil.class);

private String properiesName = "";

public PropertiesUtil() {

}
public PropertiesUtil(String fileName) {
this.properiesName = fileName;
}
public String readProperty(String key) {
String value = "";
InputStream is = null;
try {
is = PropertiesUtil.class.getClassLoader().getResourceAsStream(
properiesName);
Properties p = new Properties();
p.load(is);
value = p.getProperty(key);
} catch (IOException e) {
// TODO Auto-generated catch block
logger.error("", e);;
} finally {
try {
if(is!=null)is.close();
} catch (IOException e) {
// TODO Auto-generated catch block
logger.error("", e);;
}
}
return value;
}

public Properties getProperties() {
Properties p = new Properties();
InputStream is = null;
try {
is = PropertiesUtil.class.getClassLoader().getResourceAsStream(
properiesName);
p.load(is);
} catch (IOException e) {
// TODO Auto-generated catch block
logger.error("", e);;
} finally {
try {
if(is!=null)is.close();
} catch (IOException e) {
// TODO Auto-generated catch block
logger.error("", e);;
}
}
return p;
}

public void writeProperty(String key, String value) {
InputStream is = null;
OutputStream os = null;
Properties p = new Properties();
try {
is = new FileInputStream(properiesName);
p.load(is);
os = new FileOutputStream(PropertiesUtil.class.getClassLoader().getResource(properiesName).getFile());

p.setProperty(key, value);
p.store(os, key);
os.flush();
os.close();
} catch (Exception e) {
// TODO Auto-generated catch block
logger.error("", e);;
} finally {
try {
if (null != is)
is.close();
if (null != os)
os.close();
} catch (IOException e) {
// TODO Auto-generated catch block
logger.error("", e);;
}
}

}

public static void main(String[] args) {
PropertiesUtil p = new PropertiesUtil("sysConfig.properties");
p.writeProperty("namess", "wang");
org.jeecgframework.core.util.LogUtil.info(p.readProperty("namess"));
}

}