property文件中：
url = jdbc:mysql://localhost:3306/resume
user= root
pwd = 123
java代码读取：
package com.util;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Properties;
public class DBUtil {
//建立连接
public static Connection getConnection() throws Exception {
Connection conn = null;
String property=getProperty();
String[] propertys=property.split(" ");
String url = propertys[0];
String user = propertys[1];
String pwd = propertys[2];
try {
Class.forName("com.mysql.jdbc.Driver");
conn = DriverManager.getConnection(url, user, pwd);
} catch (Exception e) {
e.printStackTrace();
throw e;
}
return conn;
}
//获取property的配置文件
public static String getProperty()
{
Properties pro= new Properties();
String property="";
try
{
InputStream is = DBUtil.class.getResourceAsStream("../../config.property");
pro.load(is);
String url = pro.getProperty("url").trim();
String user = pro.getProperty("user").trim();
String pwd = pro.getProperty("pwd").trim();
property=url+" "+user+" "+pwd;
if(is!=null) is.close();
}catch(Exception e) {
System.out.println("there is error to read config file...");
e.printStackTrace();
}
return property;
}
}
