Spring配置文件的加载工具类，spring工具类,Spring通用Prop

Spring配置文件的加载工具类，spring工具类,Spring通用Prop

Spring通用PropertiesUtil。Spring配置文件的加载工具类。```javapublic 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：```xml<bean id="propertyConfigurer"        class="com.forg.common.PropertiesUtil">        <property name="locations">            <list>                <value>classpath:system.properties</value>            </list>        </property>    </bean>