一、拦截jsp
创建InterceptorJspFilter类实现Filter接口，重写doFilter

@WebFilter("*.jsp")
public class InterceptorJspFilter implements Filter{

	public void destroy() {
		// TODO Auto-generated method stub
		
	}
	
	public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain chain)
			throws IOException, ServletException {
		// TODO Auto-generated method stub
		HttpServletRequest  httpRequest = (HttpServletRequest)arg0;
		HttpServletResponse httptResponse = (HttpServletResponse) arg1;
		String uri = httpRequest.getRequestURI();
		UserEntity userEntity = (UserEntity) httpRequest.getSession().getAttribute("user");
		if(userEntity!=null){
			chain.doFilter(httpRequest, httptResponse);
			
		}
		//包含登录界面就不拦截
		else if (uri.contains("login.jsp") {
			chain.doFilter(httpRequest, httptResponse);
		}
		else {
			try {
				ThisAssection.getThisRuntimeException("用户非法登录已打回登录界面");
				
			} catch (Exception e) {
				// TODO: handle exception
				e.printStackTrace();
				httptResponse.sendRedirect("troIndex.jsp");
			}
			
		}
	}

	public void init(FilterConfig arg0) throws ServletException {
		// TODO Auto-generated method stub
		
	}

}

拦截controller
springmvc配置拦截器

public class InterceptHandlerController implements HandlerInterceptor{
	public List<String> excludeUrls;
	
	public List<String> getExcludeUrls() {
		return excludeUrls;
	}

	public void setExcludeUrls(List<String> excludeUrls) {
		this.excludeUrls = excludeUrls;
	}

	public void afterCompletion(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, Exception arg3)
			throws Exception {
		// TODO Auto-generated method stub
		
	}

	public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, ModelAndView arg3)
			throws Exception {
		// TODO Auto-generated method stub
		
		
	}

	public boolean preHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2) throws Exception {
		// TODO Auto-generated method stub
		arg0.setCharacterEncoding("utf-8");
		arg1.setCharacterEncoding("utf-8");
		UserEntity userEntity = (UserEntity) arg0.getSession().getAttribute("user");
		String uri = arg0.getRequestURI();
		for(String str:excludeUrls){
			if(uri.contains(str))
				return true;
		}
		if(userEntity == null){
			try {
				ThisAssection.getThisRuntimeException("用户非法登录已打回界面");
			} catch (Exception e) {
				//在命令行打印异常信息在程序中出错的位置及原因
				e.printStackTrace();
				// TODO: handle exception
				arg1.sendRedirect("index.jsp");
			}
			
		}
		return true;
	}

}

ThisAssection.java

public class ThisAssection {
	/**
	 * 自定义异常
	 * @param message
	 */
	public static void getThisRuntimeException(final String message)throws ThisRuntimeException{
		throw new ThisRuntimeException(message);
	}
	
	/**
	 * 断言一个对象为空
	 * @param message 提示用户的信息
	 * @param obj 需要断言的对象
	 * @return Object 返回类型
	 * @throws ThisRuntimeException
	 */
	public static Object isObjectNull(final String message,Object obj) throws ThisRuntimeException{
		if(obj!=null){
			getThisRuntimeException(message);
		}
		return obj;
	}
	
		
}

ThisRuntimeException.java

public class ThisRuntimeException extends RuntimeException{

	public ThisRuntimeException() {
		super();
		// TODO Auto-generated constructor stub
	}

	public ThisRuntimeException(String message, Throwable cause) {
		super(message, cause);
		// TODO Auto-generated constructor stub
	}

	public ThisRuntimeException(String message) {
		super(message);
		// TODO Auto-generated constructor stub
	}
	

}

springmvc.xml配置controller拦截器

<!-- 配置controller拦截器 -->
	<mvc:interceptors>
		<mvc:interceptor>
			<!-- 拦截地址,拦截所有 -->
			<mvc:mapping path="/**"/>
			<!-- 排除不需要拦截的地址 -->
			<mvc:exclude-mapping path="/register"/>
			<mvc:exclude-mapping path="/login"/>
			<mvc:exclude-mapping path="/findArticleListView"/>
			<mvc:exclude-mapping path="/findFileListView"/>
			<mvc:exclude-mapping path="/addAdView"/>
			<mvc:exclude-mapping path="/findChartView"/>
			<!-- <mvc:exclude-mapping path="/accountActivationCod"/> -->
			<!-- 指向自定义的拦截器 -->
			<bean class="com.xxx.utils.InterceptHandlerController">
				<property name="excludeUrls">
					<list>
						<value>register.jsp</value>
						<value>index.jsp</value>
						<value>/view/static</value>
					
					</list>
				</property>
			</bean>
		</mvc:interceptor>
	</mvc:interceptors>