首先,我定义了一个用户接口,可以从其中取出其的各种属性.代码如后面所示.用户除了各种不同的属性以外还必须设置其角色以及所属的群组.
然后定义一个AbstractUser把User共性的东西进行处理.所有的取属性的方法都已实现.用户只要根据实现情况继承AbstractUser把自己要定义的属性进行处理即可.(因为每个系统的用户都会有不同的属性,所以留成抽象类供使用者自己扩展). 只要初始化变量description, name ,group ,id, prop,role,propMap即可.
最后定义了一个类UserImpl来实现具体的User作随包的一个User供一般使用者使用.不建议直接使用UserImpl,因为以后的版本可能会重写该类.如果要使用的话可以把该类改名为自己的类即可.
这部分涉及到了一个ResourceLib类,该类中存是我自己定义的存储各种资源配置用的类,可以直接使用.
======================User.java===============================
package org.fswan.permission;
import org.fswan.Identity;
import java.util.Properties;
import org.fswan.workflow.exception.CantFoundIDException;
public interface User
{
/**
* 获取用户名
* @return 用户名
*/
public String getName();
/**
* 获取用户描述
* @return 描述
*/
public String getDescription();
/**
* 获取用户标识
* @return 用户标识
*/
public Identity getId();
/**
* 获取属性
* @return 属性值
*/
public Properties getProperties();
/**
* 获取所属组
* @return 组列表
*/
public Group[] getGroups() throws CantFoundIDException;
/**
* 获取所有角色
* @return 角色数组
*/
public Role[] getRoles() throws CantFoundIDException;
/**
* 获取用户用作权限判断的属性
* @param prop 权限属性
* @return 属性值
*/
public Object getPermissionProp(String prop);
}
=======================AbstractUser===================================
package org.fswan.permission;
import java.util.HashMap;
import java.util.Properties;
import org.fswan.Identity;
import org.fswan.workflow.exception.IdentityMappingError;
/**
*
* 实现AbstractUser的类构造必须做的一些事
* 初始化变量description,name,group,id,prop,role,propMap
*/
public class AbstractUser implements User
{
/**
* 描述
*/
protected String description;
/**
* 名称
*/
protected String name;
/**
* 所属的组的标识
*/
protected Identity[] group;
/**
* 用户标识
*/
protected Identity id;
/**
* 属性
*/
protected Properties prop;
/**
* 角色
*/
protected Identity[] role;
/**
* 权限属性存储的位置
*/
protected HashMap propMap;
/* (non-Javadoc)
* @see org.fswan.permission.User#getDescription()
*/
public String getDescription()
{
return description;
}
/* (non-Javadoc)
* @see org.fswan.permission.User#getGroups()
*/
public Group[] getGroups()
{
Group[] groups = new Group[group.length];
for (int i = 0; i < groups.length; i++)
{
try
{
groups[i] = (Group) group[i].newInstance();
} catch (IdentityMappingError e)
{
e.printStackTrace();
}
}
return groups;
}
/* (non-Javadoc)
* @see org.fswan.permission.User#getId()
*/
public Identity getId()
{
return id;
}
/* (non-Javadoc)
* @see org.fswan.permission.User#getName()
*/
public String getName()
{
return name;
}
/* (non-Javadoc)
* @see org.fswan.permission.User#getProperties()
*/
public Properties getProperties()
{
return prop;
}
/* (non-Javadoc)
* @see org.fswan.permission.User#getRoles()
*/
public Role[] getRoles()
{
Role[] roles = new Role[role.length];
for (int i = 0; i < roles.length; i++)
{
try
{
roles[i] = (Role) role[i].newInstance();
} catch (IdentityMappingError e)
{
e.printStackTrace();
}
}
return roles;
}
public String toString()
{
String retStr = id.getIdName();
retStr += ":" + name;
retStr += " " + description + "\n";
retStr += "Group:";
Group[] groups = this.getGroups();
if (groups != null)
{
for (int i = 0; i < groups.length; i++)
{
if (groups[i] != null)
retStr += groups[i].getId().getIdName() + "\t";
}
}
Properties p = getProperties();
Object[] obj = p.keySet().toArray();
for (int i = 0; i < obj.length; i++)
{
retStr+=obj[i]+":"+p.getProperty(obj[i].toString())+"\n";
}
return retStr;
}
/* (non-Javadoc)
* @see org.fswan.permission.User#getPermissionProp(java.lang.String)
*/
public Object getPermissionProp(String prop)
{
return propMap.get(prop);
}
}
==============================UserImpl.java===========================
package org.fswan.permission;
import java.util.ArrayList;
import java.util.Properties;
import javax.xml.parsers.DocumentBuilderFactory;
import org.fswan.Identity;
import org.fswan.IdentityImpl;
import org.fswan.ImplementIdentity;
import org.fswan.ResourceLib;
import org.fswan.workflow.exception.IdentityMappingError;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
public class XMLUser extends AbstractUser implements ImplementIdentity
{
/**
* XML中定义用户的标签
*/
public static final String USER = "User";
public Object newInstance(Identity id)
{
ArrayList sources = ResourceLib.getXmlResource();
for (int i = 0; i < sources.size(); i++)
{
try
{
Document doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(sources.get(i).toString());
NodeList nl = doc.getElementsByTagName(USER);
for (int j = 0; j < nl.getLength(); j++)
{
Element tempEl = (Element) nl.item(j);
String idStr = tempEl.getAttribute("id");
if (idStr != null && !idStr.equals(""))
{
if (idStr.equals(id.getIdName()))
{
this.id = new IdentityImpl(Identity.SWITCH, Identity.XMLUSER, idStr);
NodeList tempNl = tempEl.getElementsByTagName("Name");
name = tempNl.item(0).getChildNodes().item(0).getNodeValue();
tempNl = tempEl.getElementsByTagName("Description");
description = tempNl.item(0).getChildNodes().item(0).getNodeValue();
tempNl = tempEl.getElementsByTagName("ParentGroup");
Identity[] groups = new Identity[tempNl.getLength()];
for (int iGroup = 0; iGroup < groups.length; iGroup++)
{
Element tempEl2 = (Element) tempNl.item(iGroup);
String subType = tempEl.getAttribute("subType");
if(subType==null || subType.equals(""))subType = Identity.XMLGROUP;
groups[iGroup] = new IdentityImpl(Identity.GROUP, subType, tempEl2.getAttribute("id"));
}
this.group = groups;
tempNl = tempEl.getElementsByTagName("Role");
Identity[] roles = new Identity[tempNl.getLength()];
for (int iRole = 0; iRole < tempNl.getLength(); iRole++)
{
Element tempEl2 = (Element) tempNl.item(iRole);
String subType = tempEl.getAttribute("subType");
if(subType==null || subType.equals(""))subType = Identity.XMLROLE;
roles[iRole] = new IdentityImpl(Identity.ROLE, subType, tempEl2.getAttribute("id"));
}
this.role = roles;
this.prop = new Properties();
tempNl = tempEl.getElementsByTagName("Property");
if (tempNl != null)
for (int k = 0; k < tempNl.getLength(); k++)
{
Element tempElement = (Element) tempNl.item(k);
System.out.println(tempElement.getAttribute("name"));
this.prop.setProperty(tempElement.getAttribute("name"), tempElement.getAttribute("value"));
}
return this;
}
}
}
} catch (Exception e)
{
e.printStackTrace();
}
}
return null;
}
public static void main(String[] args)
{
try
{
ResourceLib.addResource("D:\\eclipse\\workspace\\workflow\\workflow.xml");
User u = (User) new IdentityImpl(Identity.USER, Identity.XMLUSER, "U01").newInstance();
System.out.println(u);
} catch (IdentityMappingError e)
{
e.printStackTrace();
}
}
}
========================XML格式=====================
<User id="U01">
<Name>Swan</Name>
<Description>方志文</Description>
<ParentGroup id="G01"/>
<Property name="SEX" value="male"/>
<Property name="AGE" value="20"/>
</User>
========================XML描述文件==================
<xs:complexType name="User">
<xs:annotation>
<xs:documentation>用户名</xs:documentation>
</xs:annotation>
<xs:sequence>
<xs:element name="Name"/>
<xs:element name="Description"/>
<xs:element name="ParentGroup" type="Identity" minOccurs="0" maxOccurs="unbounded"/>
<xs:element name="Role" type="Identity" minOccurs="0" maxOccurs="unbounded"/>
<xs:element name="Property" minOccurs="0" maxOccurs="unbounded">
<xs:complexType>
<xs:attribute name="name" use="required"/>
<xs:attribute name="value" use="required"/>
</xs:complexType>
</xs:element>
</xs:sequence>
<xs:attribute name="id" use="required"/>
</xs:complexType>
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