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使用J2SE API讀取Properties文件的六種方法

首先我在src目錄下創建了一個test.propertise的文件：

name = jone

age = 20

score = 80

讀取該文件的用例代碼如下：

1

import java.io.BufferedInputStream;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.Locale;
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import java.util.Properties;
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import java.util.PropertyResourceBundle;
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import java.util.ResourceBundle;
10

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public class PropertiesReader {
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/**
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* 1.使用java.util.Properties類的load()方法
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*/
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public static void method1(){
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try {
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InputStream in = new BufferedInputStream(new FileInputStream("D:/joneworkspace/joneworld/src/test.properties"));
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Properties p = new Properties();
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p.load(in);
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System.out.println("name is "+p.getProperty("name"));
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System.out.println("age is "+p.getProperty("age"));
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System.out.println("score is "+p.getProperty("score"));
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} catch (FileNotFoundException e) {
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e.printStackTrace();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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/**
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* 2.使用java.util.ResourceBundle類的getBundle()方法
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*/
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public static void method2(){
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ResourceBundle rb = ResourceBundle.getBundle("test", Locale.getDefault());
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System.out.println("name is "+rb.getString("name"));
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System.out.println("age is "+rb.getString("age"));
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System.out.println("score is "+rb.getString("score"));
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}
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/**
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* 3.使用java.util.PropertyResourceBundle類的構造函數
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*/
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public static void method3(){
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try {
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InputStream in = new BufferedInputStream(new FileInputStream("D:/joneworkspace/joneworld/src/test.properties"));
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ResourceBundle rb = new PropertyResourceBundle(in);
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System.out.println("name is "+rb.getString("name"));
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System.out.println("age is "+rb.getString("age"));
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System.out.println("score is "+rb.getString("score"));
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} catch (FileNotFoundException e) {
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e.printStackTrace();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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/**
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* 4.使用class變量的getResourceAsStream()方法
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*/
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public static void method4(){
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InputStream in = PropertiesReader.class.getResourceAsStream("test.properties");
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Properties p = new Properties();
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try {
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p.load(in);
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System.out.println("name is "+p.getProperty("name"));
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System.out.println("age is "+p.getProperty("age"));
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System.out.println("score is "+p.getProperty("score"));
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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/**
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*5.使用class.getClassLoader()所得到的java.lang.ClassLoader的getResourceAsStream()方法
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*/
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public static void method5(){
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InputStream in = PropertiesReader.class.getClassLoader().getResourceAsStream("test.properties");
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Properties p = new Properties();
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try {
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p.load(in);
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System.out.println("name is "+p.getProperty("name"));
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System.out.println("age is "+p.getProperty("age"));
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System.out.println("score is "+p.getProperty("score"));
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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/**
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* 6.使用java.lang.ClassLoader類的getSystemResourceAsStream()靜態方法
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*/
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public static void method6(){
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InputStream in = ClassLoader.getSystemResourceAsStream("test.properties");
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Properties p = new Properties();
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try {
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p.load(in);
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System.out.println("name is "+p.getProperty("name"));
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System.out.println("age is "+p.getProperty("age"));
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System.out.println("score is "+p.getProperty("score"));
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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/**
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* Servlet中可以使用javax.servlet.ServletContext的getResourceAsStream()方法
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* 示例： InputStream in = context.getResourceAsStream(path);
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* Properties p = new Properties();
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* p.load(in);
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*/
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}
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posted on 2010-06-06 21:12 jone 閱讀(163) 評論(0) 編輯收藏所屬分類: java

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