jdom解析xml示例

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java-jDom

XML J#

要解析的xml 代码

xml version="1.0" encoding="GBK"?>
<sys_para>
<para>
<item code="hostname" value="192.168.2.18" description="LDAP服务器IP"/>
<item code="port" value="389" description="服务器端口"/>
<item code="admin" value="培训a" description="管理员帐号"/>
<item code="pwd" value="password" description="密码"/>
<item code="basedn" value="eweb" description="组织名(基准DN)"/>
<item code="adminuser" value="admin" description="系统管理员用户"/>
<item code="adminpwd" value="200200" description="系统管理员密码"/>
<item code="defaultgroupid" value="47" description="默认组id(无任何权限)"/>
para>
sys_para>

java 代码

package ldap;
import java.io.*;
import java.util.*;
import org.jdom.*;
import org.jdom.input.SAXBuilder;
public class UMParas
{
private static HashMap prop;
private static long lastLoadTime;
private static long interval = 0x186a0L; //refresh per 100 second
// static Class class$0; /* synthetic field */
public UMParas()
{
}
//input an para and return the result
public static synchronized String getPara(String paras)
throws IllegalArgumentException
{
if(paras == null || paras.trim().length() == 0)
throw new IllegalArgumentException("Parameter's value invalid.");
long currentTime = System.currentTimeMillis();
if(prop == null || currentTime - lastLoadTime > interval)
reloadDom();
Object obj = prop.get(paras);
if(obj != null)
return (String)obj;
else
return null;
}
//load the xml file
private static synchronized void reloadDom()
{
if(prop == null)
prop = new HashMap();
SAXBuilder builder = new SAXBuilder();
Document read_doc = null;
try
{
read_doc = builder.build(UMParas.class.getResource("ldapconfig.xml"));
}
catch(FileNotFoundException e)
{
e.printStackTrace();
}
catch(JDOMException e)
{
e.printStackTrace();
}
catch(IOException e)
{
e.printStackTrace();
}
Element rootElement = read_doc.getRootElement();
List list = rootElement.getChildren("para");
for(Iterator i = list.iterator(); i.hasNext();)
{
Element current = (Element)i.next();
List item = current.getChildren("item");
Attribute code;
Attribute value;
for(Iterator j = item.iterator(); j.hasNext(); prop.put(code.getValue(), value.getValue()))
{
Element init = (Element)j.next();
code = init.getAttribute("code");
value = init.getAttribute("value");
}
}
System.out.println("解析ldapconfig.xml成功");
lastLoadTime = System.currentTimeMillis();
}
public static void main(String args[])
{
System.out.println(getPara("hostname"));
}
}

jdom.jar (149.7 KB)
描述: jdom包
下载次数: 54

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