zoukankan      html  css  js  c++  java
  • Java读取系统Properties

    java读取系统Properties 属性,针对配置较多的属性值,单独打印,实现代码如下:

    import java.util.*;
    
    public class PropertiesTest {
    
        public static void main(String[] args) {
    
            Properties properties = System.getProperties();
            PropertiesTest pt = new PropertiesTest();
            Map<String,String> map = pt.getSpecialMap(properties);
            //便于方便读取,配置较多的属性打印出来
            pt.showMap(map);
        }
    
    
        Map<String,String> getSpecialMap(Properties properties){
    
            Set<Map.Entry<Object,Object>> props  = properties.entrySet();
            Map<String,String> map = new HashMap<String, String>();
            Iterator<Map.Entry<Object, Object>> it = props.iterator();
            while (it.hasNext()) {
                Map.Entry<Object,Object> entry = it.next();
                System.out.println("key= " + entry.getKey() );
                System.out.println("value= " + entry.getValue());
                if("java.library.path".equalsIgnoreCase("" + entry.getKey())) {
                    map.put(entry.getKey()+"",entry.getValue()+"");
                }
                if("java.class.path".equalsIgnoreCase("" + entry.getKey())) {
                    map.put(entry.getKey()+"",entry.getValue()+"");
                }
                if ("sun.boot.class.path".equalsIgnoreCase("" + entry.getKey())) {
                    map.put(entry.getKey()+"",entry.getValue()+"");
                }
                if("java.ext.dirs".equalsIgnoreCase("" + entry.getKey())) {
                    map.put(entry.getKey()+"",entry.getValue()+"");
                }
            }
            return map;
        }
    
    
        void showMap(Map<String,String> map) {
            for (Map.Entry<String, String> entry : map.entrySet()) {
                System.out.println("----------------------------------------------------");
                System.out.println(entry.getKey() +":");
                splitStr(entry.getValue());
                System.out.println("----------------------------------------------------");
            }
        }
    
        void splitStr(String string) {
            String[] str = string.split(";");
            for (int i = 0; i < str.length; i++) {
                System.out.println(str[i]);
            }
        }
    
    }
    

      

  • 相关阅读:
    jqGrid Demos
    响应式web设计之CSS3 Media Queries
    固定表头带滚动条的HTML表格
    eclipse不自动弹出提示(alt+/快捷键失效)
    用ant打包可运行的jar文件 (将第三方jar包放进你自己的jar包)
    lufylegend库 LButton
    lufylegend库 鼠标事件 循环事件 键盘事件
    lufylegend库 LTextField
    jsp内置对象 的使用范围和类型【说明】
    struts2 maven整合tiles3
  • 原文地址:https://www.cnblogs.com/loytime/p/11778411.html
Copyright © 2011-2022 走看看