讀取外部配置文件*.properties

public class DBConnection { /** * 得到數據庫鏈接 * @param * @author lzj */ public Connection conn=null; public Statement stat=null; public ResultSet rs=null; public Connection getConnection(){ Properties prop = new Properties(); InputStream in = Config.class.getResourceAsStream("/jdbc.properties"); try{ prop.load(in); Class.forName(prop.getProperty("jdbc.driverClassName").trim()); conn = DriverManager.getConnection(prop.getProperty("jdbc.url").trim(), prop.getProperty("jdbc.username").trim(), prop.getProperty("jdbc.password").trim() ); return conn; }catch(Exception e){ System.out.println(e.toString()); return null; } }} 文件jdbc.properties（通常放在src文件夾下）的內容以下： 例1： jdbc.driverClassName=net.sourceforge.jtds.jdbc.Driver jdbc.url=jdbc:jtds:sqlserver://localhost:1433/GLXT jdbc.username=basedba jdbc.password=basedba123 例2： #proxool.alias=Test #proxool.driver-class=oracle.jdbc.driver.OracleDriver #proxool.driver-url=jdbc:oracle:thin:@localhost:1521:oracle #proxool.user=basedba #proxool.password=basedba123 #proxool.maximum-connection-count=20 #proxool.prototype-count=4 #proxool.house-keeping-test-sql=select sysdate from DUAL #proxool.verbose=true #proxool.statistics=10s,1m,1d #proxool.statistics-log-level=ERROR # Properties file with JDBC-related settings. # Applied by PropertyPlaceholderConfigurer from "applicationContext-resource.xml". # Targeted at system administrators, to avoid touching the context XML files. # sql2000 #jdbc.driverClassName=com.microsoft.jdbc.sqlserver.SQLServerDriver #jdbc.url1=jdbc:microsoft:sqlserver://192.168.1.183:1433;SelectMethod=cursor;databaseName=zqzwms_town #jdbc.url2=jdbc:microsoft:sqlserver://localhost:1433;SelectMethod=cursor;databaseName=zqzwms_village #jdbc.url3=jdbc:microsoft:sqlserver://localhost:1433;SelectMethod=cursor;databaseName=zqzwms_farms #jdbc.username=sa #jdbc.password= # sql2005 #jdbc.driverClassName=com.microsoft.sqlserver.jdbc.SQLServerDriver #jdbc.url1=jdbc:sqlserver://localhost:1433;SelectMethod=cursor;databaseName=zqzwms_town #jdbc.url2=jdbc:sqlserver://localhost:1433;SelectMethod=cursor;databaseName=zqzwms_village #jdbc.url3=jdbc:sqlserver://localhost:1433;SelectMethod=cursor;databaseName=zqzwms_farms #jdbc.username=sa #jdbc.password=123 #jtds #jdbc.driverClassName=net.sourceforge.jtds.jdbc.Driver #jdbc.url=jdbc:jtds:sqlserver://localhost/zqzwms_town #jdbc.username=sa #jdbc.password= #oracle  jdbc.driverClassName=oracle.jdbc.driver.OracleDriver jdbc.url=jdbc:oracle:thin:@192.168.1.95:1521:orcl jdbc.username=basedba jdbc.password=basedba123