读取配置文件内容,该如何解决_Java相关

读取配置文件内容
java中，如何从配置文件中读取配置内容，比如数据库地址等

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需要看配置文件是什么样的了，如果是properties这种格式的，可以通过Properties这个对象来获取，方式如下:

Java code

        Properties p = new Properties();        FileInputStream is = new FileInputStream(new File("路径"));        p.load(is);                // 读取数据库配置        dbConn.setDriver(p.getProperty("db.driver"));        dbConn.setUrl(p.getProperty("db.url"));        dbConn.setUserName(p.getProperty("db.username"));        dbConn.setPassword(p.getProperty("db.password"));//配置文件：db.driver=com.microsoft.sqlserver.jdbc.SQLServerDriverdb.url=jdbc:sqlserver://10.148.20.148:1433;databaseName=CI_V3R3_C01db.username=sadb.password=wimaxci
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Java codedb.properties文件内容：username= root password = url = jdbc:mysql://localhost:3306/studydriver =com.mysql.jdbc.Driver 代码：package org.caijava.example.io ;import java.io.FileInputStream ;import java.util.Properties ;import java.io.IOException ;import java.sql.Connection ;import java.sql.DriverManager ;public class ReadProperties{  public static void main(String []args){   try{     FileInputStream fis = new FileInputStream("db.properties") ;     //InputStream is = getClass().getResourceAsStream("db.properties");      Properties properties = new Properties() ;    properties.load(fis) ;   String uname = properties.getProperty("username").trim() ;   String psw = properties.getProperty("password").trim() ;   String url = properties.getProperty("url").trim() ;   String driver = properties.getProperty("driver").trim() ;   System.out.println("driver : "+driver +"\nname :"+ uname+" \npassword :"+psw+"\nurl:"+url) ;      Class.forName(driver) ;   Connection conn = DriverManager.getConnection(url,uname,psw) ;  }catch(Exception e){   e.printStackTrace() ;  }  }}