java中读取文件内容，如读取.properties文件

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有两种方法来读取文件中的内容

方法一：

1.jdbc.properties文件

oracle.driverClassName=oracle.jdbc.driver.OracleDriveroracle.url=jdbc\:oracle\:thin\:@localhost\:1522\:orcloracle.username=scottoracle.password=030608

2.java代码

package com.zwj.utils;import java.io.InputStream;import java.util.Properties;import org.springframework.core.io.support.PropertiesLoaderUtils;/** * @author Administrator */public class OracleJdbc {public static String url = "";public static String driver = "";public static String user = "";public static String pass = "";static{Properties prop =  new  Properties();            InputStream in = Object. class .getResourceAsStream("/resources/jdbc.properties" );    try {prop.load(in);driver=prop.getProperty("oracle.driverClassName").trim();url=prop.getProperty("oracle.url").trim();user=prop.getProperty("oracle.username").trim();pass=prop.getProperty("oracle.password").trim();System.out.println("读取/resources/jdbc.properties＝＝＝＝＝＝＝＝＝＝＝＝＝");} catch (Exception e) {e.printStackTrace();}}public static void main(String[] args) {System.out.println("url====//==="+url);}}

方法二：

（此方法需导入spring.jar包文件）

java代码：

package com.zwj.utils;import java.io.InputStream;import java.util.Properties;import org.springframework.core.io.support.PropertiesLoaderUtils;/** * @author Administrator */public class OracleJdbc {public static String url = "";public static String driver = "";public static String user = "";public static String pass = "";static{try {Properties prop = PropertiesLoaderUtils.loadAllProperties("resources/jdbc.properties");driver=prop.getProperty("oracle.driverClassName").trim();url=prop.getProperty("oracle.url").trim();user=prop.getProperty("oracle.username").trim();pass=prop.getProperty("oracle.password").trim();System.out.println("读取/resources/jdbc.properties＝＝＝＝＝＝＝＝＝＝＝＝＝");} catch (Exception e) {e.printStackTrace();}}public static void main(String[] args) {System.out.println("url====//==="+url);}}

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