计算机科学论坛--jdom samples (5)

用例：

a) build_url document:

<?xml version="1.0" encoding="gb2312" ?>
<!DOCTYPE url-config SYSTEM "url-config.dtd">
<url-config>
    <row_result url=”test.go”>
         <moduleID>001</moduleID>
         <action>add</action>
    </row_result>
    <row_result url=”test2.do”>
         <moduleID>002</moduleID>
         <action>add</action>
</row_result>

…………………………………………..
</url-config>

b) build_right document

<?xml version="1.0" encoding="gb2312" ?>
<!DOCTYPE right-config SYSTEM "right-config.dtd">
<right-config>
<!--userid, funcid, func_view, func_add, func_delete, func_modify,
func_query, func_print, func_conf, func_unconf -- >

    <row_result userID="javatest" moduleID="F001">
         <view>Y</view>
         <add>Y</add>
         <delete>Y</delete>
         <modify>Y</modify>
         <query>Y</query>
         <print>Y</print>
         <conf>Y</conf>
         <unconf>Y</unconf>
         <other>N</other>
</row_result>
<row_result userID="javatest" moduleID="F002">
         <view>Y</view>
         <add>N</add>
         <delete>N</delete>
         <modify>N</modify>
         <query>Y</query>
         <print>Y</print>
         <conf>N</conf>
         <unconf>N</unconf>
     <other>N</other>
</row_result>

………………………………………………
</right-config>

生产工厂：
package com.sz.lgyw.right;

import org.jdom.*;

public class RightFactory {
private static RightFactory factory = null;
private UserRightDocuments userRightDocuments;

private Document urlDocument;
private Document rightDocument;

  private RightFactory() {
    userRightDocuments = new UserRightDocuments();
    urlDocument = userRightDocuments.getUrlDocument();
    rightDocument = userRightDocuments.getRightDocument();
  }

  public static RightFactory getInstance() {
    if (factory == null) {
      factory = new RightFactory();
    }
    return factory;
  }

  public Document getURLDocument(){
    return this.urlDocument;
  }

  public Document getRightDocument(){
    return this.rightDocument;
  }

}

访问：
package com.sz.lgyw.right;

import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpServletRequest;

import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;

import org.jaxen.XPath;
import org.jaxen.XPathSyntaxException;
import org.jaxen.JaxenException;
import org.jaxen.jdom.JDOMXPath;
import org.jaxen.SimpleVariableContext;

import java.util.HashMap;
import java.util.List;
import java.util.Iterator;
import java.util.Vector;

import com.sz.lgyw.util.Log;
import java.util.*;

public class VisitRightDocument {
private RightFactory f;

  private Document doc;
  private Element element_right, element_url;
  private XPath xpath_url, xpath_right;

  private String url_xpath = "/config/row[@URL=$var_url]";
  private String right_xpath =
      "/config/row[@userId=$var_userid][@moduleId=$var_moduleid]";

private String[] ma = null;

  public VisitRightDocument() {
    try {
      xpath_url = new JDOMXPath(url_xpath);
      xpath_right = new JDOMXPath(right_xpath);
    }
    catch (JaxenException je) {
      System.out.println(
          "getModuleIDAndAction(HttpServletRequest request) err:" +
          je.getMessage());
    }
  }

  public boolean isCanAction(HttpServletRequest request) {
    return true;
  }

  public boolean isCanAction() {
    String userid = "00001"; // for use debug...
    String privilege = "N";
    boolean bl = false;

    // ma = getModuleIDAndAction(request);
    ma = getModuleIDAndAction();
    if (ma.length == 2) {
      try {
        doc = f.getInstance().getRightDocument();
        SimpleVariableContext varContext = new SimpleVariableContext();
        /*
                 varContext.setVariableValue("var_userid",
                                    request.getSession(false).
                                    getAttribute("userid"));
         */
        varContext.setVariableValue("var_userid", userid);

        varContext.setVariableValue("var_moduleid", ma[0]);
        xpath_right.setVariableContext(varContext);
        element_right = (Element) xpath_right.selectSingleNode(doc);
        privilege = element_right.getChild(ma[1]).getTextTrim();
        if (privilege.equalsIgnoreCase("Y")) {
          bl = true;
        }
      }
      catch (JaxenException je) {
        System.out.println(
            "getModuleIDAndAction(HttpServletRequest request) err:" +
            je.getMessage());
      }
    }
    else {
      System.out.println("can't get moduleid and action ");
    }
    return bl;
  }

  // private String[] getModuleIDAndAction(HttpServletRequest request) {
  private String[] getModuleIDAndAction() {
    String url = null;
    String ma1[] = {
        "", ""};
    try {
      //url = request.getRequestURI();
      url = "special/index.jsp"; //for using test!!!
      doc = f.getInstance().getURLDocument();
      SimpleVariableContext varContext = new SimpleVariableContext();
      varContext.setVariableValue("var_url", url);
      xpath_url.setVariableContext(varContext);
      element_url = (Element) xpath_url.selectSingleNode(doc);
      if (element_url != null) {
        /*
                 Log.log("element_url", element_url.getName());
                 Log.log("element_url has child ? ****   ",
                Boolean.valueOf(element_url.hasChildren()).toString());
         */
        if (element_url.getChild("moduleId") != null)
          ma1[0] = element_url.getChild("moduleId").getTextTrim();

if (element_url.getChild("action") != null)
ma1[1] = ( (Element) element_url.getChild("action")).getTextTrim();

          /*
               for (Iterator i = element_url.getChildren().iterator(); i.hasNext(); ) {
                    Element e = (Element) i.next();
                    if(e == element_url.getChild("moduleId")){
               Log.log(e.getName(), e.getText(),element_url.getChild("moduleId").getName());
                    }
                  }
               System.out.println(element_url.getChild("moduleId").getTextTrim());
                  ma1[0] = element_url.getChild("moduleId").getTextTrim();
           */
        Log.log("getModuleIDAndAction", "ma1[0]:" + ma1[0], "ma1[1]:" + ma1[1]);

      }
    }
    catch (JaxenException je) {
      System.out.println(
          "getModuleIDAndAction(HttpServletRequest request) err:" +
          je.getMessage());
      return null;
    }
    return ma1;
  }

  public String getModuleId() {
    return ma[0];
  }

  /*
    get action key and value list  by request url
   */
  public HashMap getActionMap(HttpServletRequest request) {
    return null;
  }
  public HashMap getActionMap() {
    String userid = "00001"; // for use debug...
    String url = null;
    String moduleId = null;
    String privilege = null;
    moduleId = ma[0];
    Element action = null;
    HashMap actionHash = new HashMap();

    try {
      doc = f.getInstance().getRightDocument();
      SimpleVariableContext varContext = new SimpleVariableContext();
      /*
      varContext.setVariableValue("var_userid",
                                  request.getSession().
                                  getAttribute("userid"));
       */
      varContext.setVariableValue("var_userid",
                                  userid);

      for (Iterator actions = list.iterator(); actions.hasNext(); ) {
        action = (Element) actions.next();
        // ex: add--Y
        actionHash.put(action.getName(), action.getTextTrim());
        Log.log("getActionMap", action.getName(), action.getTextTrim());
      }
    }
    catch (JaxenException je) {
      System.out.println(
          "getModuleIDAndAction(HttpServletRequest request) err:" +
          je.getMessage());
      return null;
    }
    return actionHash;
  }

  /*
     get reflict url key and value by moduleid
   */
  public HashMap getURLsByModuleId(HttpServletRequest request) {
    HashMap test = new HashMap();
    System.out.println("---------------------");
    return test;
  }

  public HashMap getURLsByModuleId() {
    HashMap urlHash = new HashMap();
    List nodesList = null;
    //String xpath_modules = "/config/row/moduleId[.=$var_module]/following-sibling::action";
    String xpath_modules = "/config/row[moduleId=$var_module]";
   // "/config/row[@URL=$var_url]";
    Element element = null;

    try {
      doc = f.getInstance().getURLDocument();
      JDOMXPath xpath = new JDOMXPath(xpath_modules);
      SimpleVariableContext varContext = new SimpleVariableContext();
      //varContext.setVariableValue("var_module", request.getAttribute("moduleId"));
      varContext.setVariableValue("var_module", ma[0]);
      xpath.setVariableContext(varContext);
      nodesList = xpath.selectNodes(doc);

     // while (urls.hasNext()) {
     for(Iterator urls = nodesList.iterator();urls.hasNext();){
        element = (Element) urls.next();
        // EX:add -- add.jsp
        //<row URL="***">
        //  <moduleId>...</moduleId>
        //  <actin>...</action>
        //</row>
        // put(action.getTextTrim(),row.getAttribute("URL"));
        if(!urlHash.containsKey(element.getChild("action").getTextTrim())){
          urlHash.put(element.getChild("action").getTextTrim(),
                      element.getAttribute("URL").getValue());

          Log.log("getURLsByModuleId", element.getChild("action").getTextTrim(),
                  element.getAttribute("URL").getValue());
        }
      }
    }
    catch (JaxenException je) {
      System.out.println(
          "getModuleIDAndAction(HttpServletRequest request) err:" +
          je.getMessage());
      return null;
    }
    return urlHash;
  }

  public static void main(String args[]) {
    VisitRightDocument vd = new VisitRightDocument();
    //vd.getModuleIDAndAction();
    //vd.getActionMap(request);
    System.out.println("*****isCanAction()****** : " + vd.isCanAction());
    vd.getActionMap();
    System.out.println(" ************************************  ");
    vd.getURLsByModuleId();

}


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