class="java">import java.util.Enumeration; import java.util.HashMap; import java.util.Map; import java.util.Properties; import org.junit.Test; public class TestProperties { /**获取所有系统属性*/ @Test public void getALLSystemProperties(){ Map<Object, Object> map = new HashMap<Object, Object>(); Properties properties = System.getProperties(); Enumeration<Object> keys = properties.keys(); while (keys.hasMoreElements()) { Object o = keys.nextElement(); map.put(o, properties.get(o)); } for(Map.Entry<Object, Object> obj : map.entrySet()){ System.out.println(obj.getKey()+"-----"+obj.getValue()); } } /**获取具体的系统属性*/ @Test public void getSystemProperties(){ Properties props=System.getProperties(); //系统属性 System.out.println("Java的运行环境版本:"+props.getProperty("java.version")); System.out.println("Java的运行环境供应商:"+props.getProperty("java.vendor")); System.out.println("Java供应商的URL:"+props.getProperty("java.vendor.url")); System.out.println("Java的安装路径:"+props.getProperty("java.home")); System.out.println("Java的虚拟机规范版本:"+props.getProperty("java.vm.specification.version")); System.out.println("Java的虚拟机规范供应商:"+props.getProperty("java.vm.specification.vendor")); System.out.println("Java的虚拟机规范名称:"+props.getProperty("java.vm.specification.name")); System.out.println("Java的虚拟机实现版本:"+props.getProperty("java.vm.version")); System.out.println("Java的虚拟机实现供应商:"+props.getProperty("java.vm.vendor")); System.out.println("Java的虚拟机实现名称:"+props.getProperty("java.vm.name")); System.out.println("Java运行时环境规范版本:"+props.getProperty("java.specification.version")); System.out.println("Java运行时环境规范供应商:"+props.getProperty("java.specification.vender")); System.out.println("Java运行时环境规范名称:"+props.getProperty("java.specification.name")); System.out.println("Java的类格式版本号:"+props.getProperty("java.class.version")); System.out.println("Java的类路径:"+props.getProperty("java.class.path")); System.out.println("加载库时搜索的路径列表:"+props.getProperty("java.library.path")); System.out.println("默认的临时文件路径:"+props.getProperty("java.io.tmpdir")); System.out.println("一个或多个扩展目录的路径:"+props.getProperty("java.ext.dirs")); System.out.println("操作系统的名称:"+props.getProperty("os.name")); System.out.println("操作系统的构架:"+props.getProperty("os.arch")); System.out.println("操作系统的版本:"+props.getProperty("os.version")); System.out.println("文件分隔符:"+props.getProperty("file.separator")); //在 unix 系统中是"/" System.out.println("路径分隔符:"+props.getProperty("path.separator")); //在 unix 系统中是":" System.out.println("行分隔符:"+props.getProperty("line.separator")); //在 unix 系统中是"/n" System.out.println("用户的账户名称:"+props.getProperty("user.name")); System.out.println("用户的主目录:"+props.getProperty("user.home")); System.out.println("用户的当前工作目录:"+props.getProperty("user.dir")); } }
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