60. 为了对请求进行统一的用户校验,减少冗余代码,设计了一个UserFilter过滤器,请编写代码完成过滤器的注入,设置配置类的注入名称为userFilterConf,并对cart、order目录下的请求进行用户校验。
时间: 2024-03-09 07:51:16 浏览: 15
首先,需要创建一个UserFilter类,该类需要实现javax.servlet.Filter接口,实现用户校验逻辑。例如:
```java
public class UserFilter implements Filter {
@Override
public void init(FilterConfig filterConfig) throws ServletException {
// 初始化操作
}
@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
// 用户校验逻辑
HttpServletRequest request = (HttpServletRequest) servletRequest;
String uri = request.getRequestURI();
if (uri.startsWith("/cart") || uri.startsWith("/order")) {
HttpSession session = request.getSession();
Object user = session.getAttribute("user");
if (user == null) {
HttpServletResponse response = (HttpServletResponse) servletResponse;
response.sendRedirect("/login");
return;
}
}
// 继续执行过滤器链
filterChain.doFilter(servletRequest, servletResponse);
}
@Override
public void destroy() {
// 销毁操作
}
}
```
然后,在Spring Boot中,可以使用@Bean注解将UserFilter注入到Spring容器中,并设置过滤器的配置类注入名称为"userFilterConf"。例如:
```java
@Configuration
public class FilterConfig {
@Bean("userFilterConf")
public FilterRegistrationBean<UserFilter> userFilter() {
FilterRegistrationBean<UserFilter> registrationBean = new FilterRegistrationBean<>();
registrationBean.setFilter(new UserFilter());
registrationBean.addUrlPatterns("/cart/*", "/order/*");
return registrationBean;
}
}
```
最后,需要在启动类上添加@ServletComponentScan注解,以启用Servlet组件扫描。例如:
```java
@SpringBootApplication
@ServletComponentScan
public class MyApplication {
public static void main(String[] args) {
SpringApplication.run(MyApplication.class, args);
}
}
```
这样,就完成了对请求进行统一的用户校验的过滤器的注入,并设置配置类的注入名称为"userFilterConf",对cart、order目录下的请求进行用户校验。