package com.dy.common.util;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.Map.Entry;
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import java.util.Properties;
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@SuppressWarnings("unused")
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public class ConfigProperties {
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private static HashMap<String, String> properties = new HashMap<>();
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private ConfigProperties() {
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}
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/**
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* 是否有属性了
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* @return 存在属性配置返回true，否则返回false
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*/
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public static boolean hasProperties(){
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return properties != null && properties.size() > 0;
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}
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/**
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* 根据配置名称得到配置值
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*
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* @param name 属性名
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* @return 属性值
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*/
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public static String getConfig(String name) {
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if (properties == null) {
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return null;
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}
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if(name.trim().equals("")){
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return "" ;
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}
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return properties.get(name);
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}
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/**
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* 初始化配置
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*
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* @param in 输入流
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* @param repeatCover 是否重复
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* @throws Exception 抛出异常
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*/
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public static void init(InputStream in, boolean repeatCover) throws Exception {
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if(in == null){
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throw new Exception("属性配置文件不存在！") ;
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}
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if(properties.size() > 0){
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if(repeatCover){
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parseProperties(in);
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}
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}else{
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parseProperties(in);
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}
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}
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/**
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* 重新初始化
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*
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* @param in 输入流
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* @throws Exception 抛出异常
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*/
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public static void reInit(InputStream in) throws Exception {
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properties = new HashMap<>();
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parseProperties(in);
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}
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private static void parseProperties(InputStream in) throws IOException{
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Properties prop = new Properties();
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prop.load(in);
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Iterator<Entry<Object, Object>> it = prop.entrySet().iterator() ;
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Entry<Object, Object> entry ;
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while(it.hasNext()){
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entry = it.next() ;
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properties.put((String)entry.getKey(), (String)entry.getValue()) ;
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}
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}
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}
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