[Xml] Filter를 사용하여 프로퍼티의 정보 활용

- Web.xml -

<filter>
  <filter-name>Session Check</filter-name>
  <filter-class>sdw.framework.util.SessionCheckFilter</filter-class>
  <init-param>
   <param-name>LOGOUT_URL</param-name>
   <param-value>/logoff.jsp</param-value>
    </init-param>
 </filter>
 <filter-mapping>
  <filter-name>Session Check</filter-name>
  <url-pattern>*.jsp</url-pattern>
 </filter-mapping>

- Java -
package sdw.framework.util;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;

public class SessionCheckFilter implements Filter {
 private String logoutUrl = null;

 public void init(FilterConfig filterconfig) throws ServletException {
  if (logoutUrl == null) {
   logoutUrl = filterconfig.getInitParameter("LOGOUT_URL");
  }
 }

 public void doFilter(ServletRequest servletrequest, ServletResponse servletresponse, FilterChain filterchain) throws IOException, ServletException {
  HttpServletRequest request = (HttpServletRequest) servletrequest;

  String page = request.getRequestURI().substring(request.getRequestURI().lastIndexOf("/") + 1);
  System.out.println(LoginHelper.isLogin(request));
  System.out.println(Environment.getInstance().get("no.session.jsp").indexOf(page) == -1);
  
  if (!LoginHelper.isLogin(request) && Environment.getInstance().get("no.session.jsp").indexOf(page) == -1) {
   servletrequest.setAttribute("exception", new Exception("정상적으로 로그인하지 않았거나 세션이 종료되었습니다."));
   servletrequest.getRequestDispatcher("//." + logoutUrl).forward(servletrequest, servletresponse);
  } else {
   filterchain.doFilter(servletrequest, servletresponse);
  }
 }

 public void destroy() {
  /* empty */
 }
}

- Environment.java -
package sdw.framework.util;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Properties;

public class Environment implements Cloneable {
 private static Environment mInstance = null;
 private static Hashtable mBundles = null;
 private static Hashtable mChecks = null;
 private static String defaultLoadPath = null;
 private Properties mCurrent = null;
 private String mName = null;

 private Environment() throws Exception {
  if (mBundles == null) {
   mBundles = new Hashtable();
  }
  if (mChecks == null) {
   mChecks = new Hashtable();
  }
 }

 public static Environment getInstance() {
  return getInstance("default");
 }

 public static synchronized Environment getInstance(String name) {
  Environment env = null;
  try {
   System.out.println(mInstance);
   if (mInstance == null) {
    mInstance = new Environment();
   }

   env = (Environment) mInstance.clone();
   System.out.println(defaultLoadPath);
   if (defaultLoadPath != null) {
    if (!mBundles.containsKey(name)) {
     loadFile(name);
    }
    env.setResource(name);
    if (env.isModified()) {
     //env.refresh();
    }
   }
  } catch (Exception e) {
   e.printStackTrace();
  }
  return env;
 }

 private static void loadFile(String name) throws Exception {
  File file = new File(defaultLoadPath, name + ".properties");
  Properties props = new Properties();
  props.load(new FileInputStream(file));

  mBundles.put(name, props);
  mChecks.put(name, new Long(file.lastModified()));
 }

 private void setResource(String name) {
  mName = name;
  mCurrent = (Properties) mBundles.get(name);
 }

 

 private boolean isModified() {
  File file = new File(defaultLoadPath, mName + ".properties");
  long newT = file.lastModified();
  return (newT > ((Long) mChecks.get(mName)).longValue());
 }

 public String get(String name) {
  return mCurrent.getProperty(name) == null ? "" : mCurrent.getProperty(name);
 }

 public void put(String name, String value) {
  mCurrent.put(name, value);
 }

 public void remove(String name) {
  mCurrent.remove(name);
  writeFile();
 }

 public Enumeration getKeys() {
  return mCurrent.keys();
 }

 public Properties getProperties() {
  return mCurrent;
 }

 public void writeFile() {
  FileOutputStream out = null;
  try {
   File file = new File(defaultLoadPath, mName + ".properties");
   out = new FileOutputStream(file);

   mCurrent.store(out, null);
   out.close();
  } catch (Exception e) {
   e.printStackTrace();
  }
 }

 public void setDefaultLoadPath(String path) {
  defaultLoadPath = path;
 }

 public String getDefaultLoadPath() {
  return defaultLoadPath;
 }

 public String getName() {
  return mName;
 }

}

- default.properties -
log.level=DEBUG
log.file=D:/Temp/admin.log
connectionTimeout=600000
upload.pic.path=D:/Temp
upload.board.path=D:/workspace/workspace_aa2/aa2/WebContent/images/upload
upload.gos.path=D:/Temp
ftp.gos.user=aa
ftp.gos.password=aa
ftp.gos.port=21
ftp.gos.path=/Interface/aa
window.title=%s\uc790\ub3d9\ucc28 :: aa2
no.session.jsp=index.jsp;Login.jsp;logoff.jsp;Login_json;IdPop.jsp;Id_json.jsp;Password.jsp;PasswordPop.jsp
no.session.service=sdw.comm.service.LoginWb;sdw.comm.service.LogWb
session.timeout=480