drp1.0--dm4j读取XML文件配置，访问数据库

XML文件

<?xml version="1.0" encoding="UTF-8"?>
<config>
	<db-info>
		<driver-name>oracle.jdbc.driver.OracleDriver</driver-name>
		<url>jdbc:oracle:thin:@127.0.0.1:1521:orcl</url>
		<username>drp</username>
		<password>drp</password>
	</db-info>
</config>

DBUtil测试类

package com.zjlolife.drp.util;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class DBUtil {

 public static Connection getConnection() {
	 Connection ct = null;
	 try {
		 JdbcInfo info = ConfigReader.getInstance().getInfo();
		Class.forName(info.getDriverName());
		ct = DriverManager.getConnection(info.getUrl(), info.getUsername(), info.getPassword());
	} catch (Exception e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	}
	
	  return ct;
	 
 }
	public static void main(String[] args) {
		DBUtil.getConnection();
		System.out.println("ok");

	}

}

加载XML核心类ConfigReader.java

package com.zjlolife.drp.util;

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;

public class ConfigReader {
	 private Document doc;
	 
	 private JdbcInfo info;
	 
     public static ConfigReader instance = new ConfigReader();
     
     private ConfigReader() {
    	  try {
			doc = new SAXReader().read(Thread.currentThread().getContextClassLoader().getResourceAsStream("sys-config.xml"));
			Element driverNameElt = (Element)doc.selectObject("/config/db-info/driver-name");
			Element urlElt = (Element)doc.selectObject("/config/db-info/url");
			Element usernameElt = (Element)doc.selectObject("/config/db-info/username");
			Element passwordElt = (Element)doc.selectObject("/config/db-info/password");
			info = new JdbcInfo();
			info.setDriverName(driverNameElt.getStringValue());
			info.setUrl(urlElt.getStringValue());
			info.setUsername(usernameElt.getStringValue());
			info.setPassword(passwordElt.getStringValue());
			
			
		} catch (DocumentException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
     }
     
     public static ConfigReader getInstance() {
    	 return instance;
     }

	public JdbcInfo getInfo() {
		return info;
	}

	public static void main(String[] args) {
		JdbcInfo info = ConfigReader.getInstance().getInfo();
		System.out.println(info);

	}
     
}

接收xml信息的类JdbcInfo.java

package com.zjlolife.drp.util;

public class JdbcInfo {
 public String driverName;
 
 public String url;
 
 public String username;
 
 public String password;

 public String getDriverName() {
  return driverName;
 }

 public void setDriverName(String driverName) {
  this.driverName = driverName;
 }

 public String getUrl() {
  return url;
 }

 public void setUrl(String url) {
  this.url = url;
 }

 public String getUsername() {
  return username;
 }

 public void setUsername(String username) {
  this.username = username;
 }

 public String getPassword() {
  return password;
 }

 public void setPassword(String password) {
  this.password = password;
 }
 
 
 public String toString() {
  return this.getClass().getName() + "{driverName=" + this.driverName +
       ", url=" + this.url +
       ", username=" + this.username +
       ", password=" + this.password + "}";
 }

}