Java属性配置Properties与XML

Love The Way You Lie 2024-01-20 08:06 109阅读 0赞

假设现在的属性配置以xml方式写入到properties.xml：

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

读配置：

  1. import java.io.File;
  2. import java.io.FileInputStream;
  3. import java.io.PrintStream;
  4. import java.util.*;
  6. /**
  7.  * 测试程序。
  8.  */
  9. public class Main {
  10.     public static void main(String[] args) {
  11.         try {
  12.             new Main().test();
  13.         } catch (Exception e) {
  14.             e.printStackTrace();
  15.         }
  16.     }
  18.     private void test() throws Exception {
  19.         printer();
  20.     }
  22.     private void printer() throws Exception {
  23.         Properties prop = new Properties();
  24.         FileInputStream fis = new FileInputStream("properties.xml");
  25.         prop.loadFromXML(fis);
  26.         fis.close();
  28.         System.out.println("==========");
  30.         Set<Map.Entry<Object, Object>> sets = prop.entrySet();
  31.         Iterator<Map.Entry<Object, Object>> iterator = sets.iterator();
  32.         while (iterator.hasNext()) {
  33.             Map.Entry<Object, Object> entry = iterator.next();
  35.             Object key = entry.getKey();
  36.             Object value = entry.getValue();
  37.             System.out.println(key + "->" + value + "-" + prop.getProperty(key.toString()));
  38.         }
  39.     }
  41.     /**
  42.      * 重新设置属性配置。
  43.      *
  44.      * @param key
  45.      * @param value
  46.      * @throws Exception
  47.      */
  48.     private void setProperty(String key, String value) throws Exception {
  49.         Properties p = new Properties();
  50.         p.setProperty("id", "2019");
  51.         p.setProperty("password", "654321");
  52.         PrintStream ps = new PrintStream(new File("test.properties"));
  53.         p.storeToXML(ps, "set config");
  54.     }
  55. }

输出：

  1. ==========
  2. password->123456-123456
  3. name->phil-phil
  4. id->1-1

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