<mvc:interceptors>
  <mvc:interceptor>
   <mvc:mapping path="/**"/>
   <bean class="com.nps.base.filter.LoginInterceptor"></bean>
  </mvc:interceptor>
</mvc:interceptors>

package com.nps.base.filter;
import java.io.IOException;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import com.nps.utils.IpInterceptUtils;

 /**
 * 验证拦截器
 * @author HUANG
 */
public class LoginInterceptor implements HandlerInterceptor {
private final static Logger logger = LoggerFactory
 .getLogger(LoginInterceptor.class);

@Override
public void afterCompletion(HttpServletRequest arg0,
 HttpServletResponse arg1, Object arg2, Exception arg3)
 throws Exception {

}

@Override
public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1,
 Object arg2, ModelAndView arg3) throws Exception {

}

@Override
public boolean preHandle(HttpServletRequest request,
 HttpServletResponse response, Object handler) throws Exception {
 String ip = getIpAddress(request);
 if (IpInterceptUtils.chickIpBreak(ip)) {
 return false;
 }
 Map<String, String> map = getParameterMap(request);// 获取url中的所有参数
 String servletUrl = request.getServletPath();// servlet地址
 String url = getRealUrl(servletUrl, map);

 if (url.indexOf("/user/") == 0) {
 Object user = request.getSession().getAttribute("User");
 if (user == null) {
 // System.out.println("尚未登录，调到登录页面");
 response.sendRedirect(request.getContextPath() + "/loginOut.do");
 return false;
 }
 }

 return true;
}

/**
 * 获取请求主机IP地址,如果通过代理进来，则透过防火墙获取真实IP地址;
 * 
 * @param request
 * @return
 * @throws IOException
 */
public final static String getIpAddress(HttpServletRequest request)
 throws IOException {
 // 获取请求主机IP地址,如果通过代理进来，则透过防火墙获取真实IP地址

 String ip = request.getHeader("X-Forwarded-For");
 // if (logger.isInfoEnabled()) {
 // logger.info("getIpAddress(HttpServletRequest) - X-Forwarded-For - String ip="
 // + ip);
 // }

 if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
 if (ip == null || ip.length() == 0
 || "unknown".equalsIgnoreCase(ip)) {
 ip = request.getHeader("Proxy-Client-IP");
 // if (logger.isInfoEnabled()) {
 // logger.info("getIpAddress(HttpServletRequest) - Proxy-Client-IP - String ip="
 // + ip);
 // }
 }
 if (ip == null || ip.length() == 0
 || "unknown".equalsIgnoreCase(ip)) {
 ip = request.getHeader("WL-Proxy-Client-IP");
 // if (logger.isInfoEnabled()) {
 // logger.info("getIpAddress(HttpServletRequest) - WL-Proxy-Client-IP - String ip="
 // + ip);
 // }
 }
 if (ip == null || ip.length() == 0
 || "unknown".equalsIgnoreCase(ip)) {
 ip = request.getHeader("HTTP_CLIENT_IP");
 // if (logger.isInfoEnabled()) {
 // logger.info("getIpAddress(HttpServletRequest) - HTTP_CLIENT_IP - String ip="
 // + ip);
 // }
 }
 if (ip == null || ip.length() == 0
 || "unknown".equalsIgnoreCase(ip)) {
 ip = request.getHeader("HTTP_X_FORWARDED_FOR");
 // if (logger.isInfoEnabled()) {
 // logger.info("getIpAddress(HttpServletRequest) - HTTP_X_FORWARDED_FOR - String ip="
 // + ip);
 // }
 }
 if (ip == null || ip.length() == 0
 || "unknown".equalsIgnoreCase(ip)) {
 ip = request.getRemoteAddr();
 // if (logger.isInfoEnabled()) {
 // logger.info("getIpAddress(HttpServletRequest) - getRemoteAddr - String ip="
 // + ip);
 // }
 }
 } else if (ip.length() > 15) {
 String[] ips = ip.split(",");
 for (int index = 0; index < ips.length; index++) {
 String strIp = (String) ips[index];
 if (!("unknown".equalsIgnoreCase(strIp))) {
 ip = strIp;
 break;
 }
 }
 }

 return ip;
}

/**
 * 根据request获取所有的参数集
 * 
 * @param request
 * @return
 */
protected Map<String, String> getParameterMap(HttpServletRequest request) {
 Enumeration<String> names = request.getParameterNames();
 String name;
 Map<String, String> map = new HashMap<String, String>();
 while (names.hasMoreElements()) {
 name = names.nextElement();
 map.put(name, request.getParameter(name).trim().replaceAll("'", ""));
 }
 return map;
}

/**
 * 获取url
 * 
 * @param uri
 * @param params
 * @return
 */
String getRealUrl(String uri, Map<String, String> params) {
 StringBuffer sb = new StringBuffer(uri);
 if (params != null) {
 int i = 0;
 for (String key : params.keySet()) {
 i++;
 if (i == 1) {
 sb.append("?" + key + "=" + params.get(key));
 } else {
 sb.append("&" + key + "=" + params.get(key));
 }
 }
 }
 return sb.toString();
}
}

public class IpInterceptUtils {
private static String date ;
private static PropertiesUtil p=null;
 /***
 * 校验IP是否加入黑名单
 * @param ip
 * @return true 是在黑名单 
 * @throws IOException
 */
 public static boolean chickIpBreak(String ip) throws IOException{
 if(p == null){
  p = new PropertiesUtil("conf/ip-black.properties");
 }else{
  String str = new SimpleDateFormat("MMddHHmmss").format(new Date()); 
  str=str.substring(0,9);
  if(date==null || !date.equals(str)){ 
  date = str; 
  p = new PropertiesUtil("conf/ip-black.properties");
  }
 }
   Enumeration en = p.getProps().propertyNames();
   while (en.hasMoreElements()) {
    String key = (String) en.nextElement();
    if(key.equals(ip)){
    return true;
    }
   }
 return false;
 }
}

package com.nps.base.model;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;

import org.springframework.stereotype.Component;

/**
 * 读取Properties综合类,默认绑定到classpath下的config.properties文件。
 * @author 
 */
@Component("PropertiesUtil")
public class PropertiesUtil {
 //配置文件的路径
 private String configPath=null;
 
 /**
  * 配置文件对象
  */
 private Properties props=null;
 
 /**
  * 默认构造函数，用于sh运行，自动找到classpath下的config.properties。
  */
 public PropertiesUtil() throws IOException{
  if(props==null){
  InputStream in = PropertiesUtil.class.getClassLoader().getResourceAsStream("conf/application.properties");
   props = new Properties();
   props.load(in);
    //关闭资源
   in.close();
  }
  
 }
 
 /**
  * 默认构造函数，用于sh运行，自动找到classpath下的config.properties。
  */
 public PropertiesUtil(String path) throws IOException{
  if(props==null){
  InputStream in = PropertiesUtil.class.getClassLoader().getResourceAsStream(path);
   props = new Properties();
   props.load(in);
    //关闭资源
   in.close();
  }
  
 }
 
 /**
  * 根据key值读取配置的值
  * Jun 26, 2010 9:15:43 PM
  * @author 朱志杰
  * @param key key值
  * @return key 键对应的值 
  * @throws IOException 
  */
 public String readValue(String key) throws IOException {
  return props.getProperty(key);
 }
 
 /**
  * 读取properties的全部信息
  * @throws FileNotFoundException 配置文件没有找到
  * @throws IOException 关闭资源文件，或者加载配置文件错误
  * 
  */
 public Map<String,String> readAllProperties() throws FileNotFoundException,IOException {
  //保存所有的键值
  Map<String,String> map=new HashMap<String,String>();
  Enumeration en = props.propertyNames();
  while (en.hasMoreElements()) {
   String key = (String) en.nextElement();
   String Property = props.getProperty(key);
   map.put(key, Property);
  }
  return map;
 }

 /**
  * 设置某个key的值,并保存至文件。
  * @param key key值
  * @return key 键对应的值 
  * @throws IOException 
  */
 public void setValue(String key,String value) throws IOException {
  Properties prop = new Properties();
  InputStream fis = new FileInputStream(this.configPath);
  // 从输入流中读取属性列表（键和元素对）
  prop.load(fis);
  // 调用 Hashtable 的方法 put。使用 getProperty 方法提供并行性。
  // 强制要求为属性的键和值使用字符串。返回值是 Hashtable 调用 put 的结果。
  OutputStream fos = new FileOutputStream(this.configPath);
  prop.setProperty(key, value);
  // 以适合使用 load 方法加载到 Properties 表中的格式，
  // 将此 Properties 表中的属性列表（键和元素对）写入输出流
  prop.store(fos,"last update");
  //关闭文件
  fis.close();
  fos.close();
 }
 
 /**
 * @return the props
 */
 public Properties getProps() {
 return props;
 }

 public static void main(String[] args) {
  PropertiesUtil p;
  try {
   p = new PropertiesUtil("conf/ip-black.properties");
   Enumeration en = p.props.propertyNames();
   String str="";
   while (en.hasMoreElements()) {
    String key = (String) en.nextElement();
    System.out.println(key);
   }

  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
 }

 
}