Spring Boot 拦截器

关于springboot拦截器，文章很多，在此主要贴源码。

1. 实现HandlerInterceptor接口

@Slf4j
@Component
public class TestInterceptor implements HandlerInterceptor{

@Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
            throws Exception {
        log.info("preHandle==在调用controller方法前调用");
        //此处可添加业务逻辑
        return true;// 只有返回true才会继续向下执行，返回false取消当前请求
    }


    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
            ModelAndView modelAndView) throws Exception {
    log.info("postHandle==在调用controller方法后调用");
    }


    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
            throws Exception {
    log.info("afterCompletion==在整个请求结束后调用");
    }
}

2. 继承WebMvcConfigurerAdapter，重写addInterceptors方法，并将自定义的拦截器add进去

@Configuration
public class TestWebConfig extends WebMvcConfigurerAdapter {
@Autowired
private TestInterceptor testInterceptor;
@Override
    public void addInterceptors(InterceptorRegistry registry) {
String[] addPatterns = {"/**"}; //默认拦截所有接口
String[] excludePatterns = {"/AA","/BB"}; //默认排除拦截的接口

//可动态设置拦截和排除拦截的接口
        registry.addInterceptor(testInterceptor).addPathPatterns(addPatterns).excludePathPatterns(excludePatterns);
        super.addInterceptors(registry);
    }
}

转载于:https://my.oschina.net/superwind20/blog/1524146