一个不错的工具类,记录下来以后使用!
class="java" name="code">
package test;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import java.util.StringTokenizer;
public final class PropertiesHelper {
public static boolean getBoolean(String property, Properties properties) {
return Boolean.valueOf(properties.getProperty(property)).booleanValue();
}
public static boolean getBoolean(String property, Properties properties,
boolean defaultValue) {
String setting = properties.getProperty(property);
return (setting == null) ? defaultValue : Boolean.valueOf(setting)
.booleanValue();
}
public static int getInt(String property, Properties properties,
int defaultValue) {
String propValue = properties.getProperty(property);
return (propValue == null) ? defaultValue : Integer.parseInt(propValue);
}
public static long getLong(String property, Properties properties,
long defaultValue) {
String propValue = properties.getProperty(property);
return (propValue == null) ? defaultValue : Long.parseLong(propValue);
}
public static String getString(String property, Properties properties,
String defaultValue) {
String propValue = properties.getProperty(property);
return (propValue == null) ? defaultValue : propValue;
}
public static Integer getInteger(String property, Properties properties) {
String propValue = properties.getProperty(property);
return (propValue == null) ? null : Integer.valueOf(propValue);
}
public static Map<String,String> toMap(String property, String delim, Properties properties) {
Map<String,String> map = new HashMap<String,String>();
String propValue = properties.getProperty(property);
if (propValue != null) {
StringTokenizer tokens = new StringTokenizer(propValue, delim);
while (tokens.hasMoreTokens()) {
map.put(tokens.nextToken(), tokens.hasMoreElements() ? tokens
.nextToken() : "");
}
}
return map;
}
public static String[] toStringArray(String property, String delim,
Properties properties) {
return toStringArray(properties.getProperty(property), delim);
}
public static String[] split(String seperators, String list) {
return split(seperators, list, false);
}
public static String[] split(String seperators, String list, boolean include) {
StringTokenizer tokens = new StringTokenizer(list, seperators, include);
String[] result = new String[tokens.countTokens()];
int i = 0;
while (tokens.hasMoreTokens()) {
result[i++] = tokens.nextToken();
}
return result;
}
public static String[] toStringArray(String propValue, String delim) {
if (propValue != null) {
return split(delim, propValue);
} else {
return null;
}
}
/**
* replace a property by a starred version
*
* @param props
* properties to check
* @param key
* proeprty to mask
* @return cloned and masked properties
*/
public static Properties maskOut(Properties props, String key) {
Properties clone = (Properties) props.clone();
if (clone.get(key) != null) {
clone.setProperty(key, "****");
}
return clone;
}
private PropertiesHelper() {
}
}
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