Java属性配置Properties与XML

Love The Way You Lie 2024-01-20 08:06 51阅读 0赞

假设现在的属性配置以xml方式写入到properties.xml：

<?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE properties SYSTEM "http://java.sun.com/dtd/properties.dtd">
    <properties>
        <entry key="name">phil</entry>
        <entry key="id">1</entry>
        <entry key="password">123456</entry>
    </properties>

读配置：

import java.io.File;
    import java.io.FileInputStream;
    import java.io.PrintStream;
    import java.util.*;
    
    /**
     * 测试程序。
     */
    public class Main {
        public static void main(String[] args) {
            try {
                new Main().test();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    
        private void test() throws Exception {
            printer();
        }
    
        private void printer() throws Exception {
            Properties prop = new Properties();
            FileInputStream fis = new FileInputStream("properties.xml");
            prop.loadFromXML(fis);
            fis.close();
    
            System.out.println("==========");
    
            Set<Map.Entry<Object, Object>> sets = prop.entrySet();
            Iterator<Map.Entry<Object, Object>> iterator = sets.iterator();
            while (iterator.hasNext()) {
                Map.Entry<Object, Object> entry = iterator.next();
    
                Object key = entry.getKey();
                Object value = entry.getValue();
                System.out.println(key + "->" + value + "-" + prop.getProperty(key.toString()));
            }
        }
    
        /**
         * 重新设置属性配置。
         *
         * @param key
         * @param value
         * @throws Exception
         */
        private void setProperty(String key, String value) throws Exception {
            Properties p = new Properties();
            p.setProperty("id", "2019");
            p.setProperty("password", "654321");
            PrintStream ps = new PrintStream(new File("test.properties"));
            p.storeToXML(ps, "set config");
        }
    }

输出：

==========
    password->123456-123456
    name->phil-phil
    id->1-1