如何在SpringBoot项目中使用拦截器
相比springmvc,springboot中拦截器不需要在xml中配置,只需定义拦截器类 implements HandlerInterceptor
和拦截器拦截路径的配置类extends WebMvcConfigurerAdapter
1.SessionInterceptor
package com.example.demo;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Created by 20160216 on 2018/2/8.
*/
public class SessionInterceptor implements HandlerInterceptor
{
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object o) throws Exception {
System.out.println("uri="+request.getRequestURI());
//登录不做拦截
if(request.getRequestURI().equals("/userbg/login") || request.getRequestURI().equals("/user/login_view"))
{
return true;
}
//验证session是否存在
Object obj = request.getSession().getAttribute("_session_user");
if(obj == null)
{
response.sendRedirect("/user/login_view");
return false;
}
return true;
}
@Override
public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {
}
@Override
public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {
}
}
2.SessionConfiguration
package com.example.demo; import org.springframework.context.annotation.Configuration; import org.springframework.web.servlet.config.annotation.InterceptorRegistry; import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter; /** * Created by 20160216 on 2018/2/8. */ @Configuration public class SessionConfiguration extends WebMvcConfigurerAdapter { @Override public void addInterceptors(InterceptorRegistry registry) { registry.addInterceptor(new SessionInterceptor()).addPathPatterns("/**"); } }
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