SpringMVC拦截器盗链接
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编译工具：IntelliJ IDEA 2019.3.5
用到的jar包链接
https://download.csdn.net/download/Taboos_/19465556?spm=1001.2014.3001.5503
用到的配置文件
spring_config.xml
代码---------------------------------------------------------------
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
https://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
https://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/aop
https://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
https://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/mvc
https://www.springframework.org/schema/mvc/spring-mvc.xsd">
<context:component-scan base-package="cn.hp"></context:component-scan>
<mvc:annotation-driven></mvc:annotation-driven>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="viewResolver">
<property name="prefix" value="/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<!--配置一个全局拦截器 拦截所有请求-->
<mvc:interceptors>
<!-- <bean id="testInterceptor1" class="cn.hp.interceptor.TestInterceptor1"></bean>-->
<mvc:interceptor>
<mvc:mapping path="/**"/>
<bean id="loginInterceptor" class="cn.hp.interceptor.LoginInterceptor"></bean>
<!-- <bean id="testInterceptor1" class="cn.hp.interceptor.TestInterceptor1"></bean>-->
</mvc:interceptor>
<!-- <mvc:interceptor>-->
<!-- <mvc:mapping path="/test1.do"/>-->
<!-- <mvc:exclude-mapping path="/test2.do"/>-->
<!-- <bean id="testInterceptor2" class="cn.hp.interceptor.TestInterceptor2"></bean>-->
<!-- </mvc:interceptor>-->
</mvc:interceptors>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="cn.hp.dao"></property>
</bean>
</beans>
-------------------------------------------------------------------------------
web.xml
代码----------------------------------------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0">
<servlet>
<servlet-name>dispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 初始化时加载springmvc配置文件 -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:*.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>dispatcherServlet</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<filter>
<filter-name>fileEncoding</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>Encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>fileEncoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
--------------------------------------------------------------------------------
action层
代码----------------------------------------------------------------------------
package cn.hp.action;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import javax.servlet.http.HttpSession;
@Controller
public class UserAction {
@RequestMapping(value = "test1.do")
public String test1(){
System.out.println("正在执行test1 这个的业务逻辑");
return "index";
}
@RequestMapping(value = "test2.do")
public String test2(){
System.out.println("正在执行test2 这个的业务逻辑");
return "index";
}
@RequestMapping(value = "login.do")
public String login(String username, String pwd, Model model, HttpSession session){
if (username.equals("zsl")&&pwd.equals("123456")){
session.setAttribute("user",username);
return "redirect:/main.do";
}else {
model.addAttribute("msg","用户名密码错误");
return "login";
}
}
@RequestMapping(value = "main.do")
public String main(){
return "main";
}
@RequestMapping(value = "loginout.do")
public String loginout(HttpSession session){
session.invalidate();
return "login";
}
}
--------------------------------------------------------------------------------
interceptor层
Testinterceptor1
代码----------------------------------------------------------------------------
package cn.hp.interceptor;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class TestInterceptor1 implements HandlerInterceptor {
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
System.out.println("拦截请求之后 业务逻辑之前执行此方法");
return true;
}
@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
System.out.println("业务逻辑之后 视图渲染之前");
}
@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
System.out.println("视图渲染之后执行");
}
}
----------------------------------------------------------------------------
Testinterceptor2
代码----------------------------------------------------------------------------
package cn.hp.interceptor;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class TestInterceptor2 implements HandlerInterceptor {
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
System.out.println("拦截2请求之后 业务逻辑之前执行此方法");
return true;
}
@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
System.out.println("业务逻辑2之后 视图渲染之前");
}
@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
System.out.println("视图渲染2之后执行");
}
}
----------------------------------------------------------------------------
盗链接
代码----------------------------------------------------------------------------
@RequestMapping(value = "login.do")
public String login(String username, String pwd, Model model, HttpSession session){
if (username.equals("zsl")&&pwd.equals("123456")){
session.setAttribute("user",username);
return "redirect:/main.do";
}else {
model.addAttribute("msg","用户名密码错误");
return "login";
}
}
@RequestMapping(value = "main.do")
public String main(){
return "main";
}
@RequestMapping(value = "loginout.do")
public String loginout(HttpSession session){
session.invalidate();
return "login";
}
}
----------------------------------------------------------------------------
LoginInterceptor
代码----------------------------------------------------------------------------
package cn.hp.interceptor;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class LoginInterceptor implements HandlerInterceptor {
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
String path = request.getRequestURI();
if (path.indexOf("login.do")>0){
return true;
}
Object obj1 = request.getSession().getAttribute("user");
if (obj1!=null){
return true;
}else {
request.setAttribute("msg","去登陆");
request.getRequestDispatcher("login.jsp").forward(request,response);
return false;
}
}
@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
}
@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
}
}
----------------------------------------------------------------------------
前端jsp页面
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