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Spring通用PropertiesUtil。Spring配置文件的加载工具类。
使用方式,创建一个上面类的bean:
public class PropertiesUtil extends PropertyPlaceholderConfigurer implements Map<String,String> { private static final Logger logger = Logger.getLogger(PropertiesUtil.class); private static Map<String,String> ctxPropertiesMap; protected void processProperties( ConfigurableListableBeanFactory beanFactoryToProcess,Properties props) throws BeansException { super.processProperties(beanFactoryToProcess,props); if (ctxPropertiesMap != null) { logger.warn("The property map will be override!"); } ctxPropertiesMap = new HashMap<String,String>(); for (Object key : props.keySet()) { String keyStr = key.toString(); String value = props.getProperty(keyStr); ctxPropertiesMap.put(keyStr,value); } } public static String getString(String name) { if (ctxPropertiesMap == null) { ctxPropertiesMap = new HashMap<String,String>(); } return (String) ctxPropertiesMap.get(name); } public static boolean getBoolean(String name,boolean defaultValue) { String v = getString(name); if (v == null) { return defaultValue; } try { return Boolean.parseBoolean(v); } catch (Exception e) { } return defaultValue; } public static int getIntValue(String name,int defaultValue) { String v = getString(name); if (v == null) { return defaultValue; } try { return Integer.parseInt(v); } catch (Exception e) { } return defaultValue; } public static long getLongValue(String name,long defaultValue) { String v = getString(name); if (v == null) { return defaultValue; } try { return Long.parseLong(v); } catch (Exception e) { } return defaultValue; } public static short getShortValue(String name,short defaultValue) { String v = getString(name); if (v == null) { return defaultValue; } try { return Short.parseShort(v); } catch (Exception e) { } return defaultValue; } public static double getDoubleValue(String name,double defaultValue) { String v = getString(name); if (v == null) { return defaultValue; } try { return Double.parseDouble(v); } catch (Exception e) { } return defaultValue; } public static float getFloatValue(String name,float defaultValue) { String v = getString(name); if (v == null) { return defaultValue; } try { return Float.parseFloat(v); } catch (Exception e) { } return defaultValue; } public int size() { return ctxPropertiesMap.size(); } public boolean isEmpty() { return ctxPropertiesMap.isEmpty(); } public boolean containsKey(Object key) { return ctxPropertiesMap.containsKey(key); } public boolean containsValue(Object value) { throw new UnsupportedOperationException(); } public String put(String key,String value) { throw new UnsupportedOperationException(); } public String remove(Object key) { throw new UnsupportedOperationException(); } public void putAll(Map<? extends String,? extends String> m) { throw new UnsupportedOperationException(); } public void clear() { throw new UnsupportedOperationException(); } public Set<String> keySet() { throw new UnsupportedOperationException(); } public Collection<String> values() { throw new UnsupportedOperationException(); } public Set<Map.Entry<String,String>> entrySet() { throw new UnsupportedOperationException(); } public String get(Object key) { return (String) ctxPropertiesMap.get(key); }
使用方式,创建一个上面类的bean:
<bean id="propertyConfigurer" class="com.forg.common.PropertiesUtil"> <property name="locations"> <list> <value>classpath:system.properties</value> </list> </property> </bean>
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