# Spring - Interceptor 테스트

관련 포스팅 : Spring - Filter, Interceptor, AOP

인터셉터를 간단하게 테스트 해보자.

1. servlet-context.xml

인터셉터 설정

<!-- 인터셉터 bean 설정 -->
<beans:bean id="sampleInterceptor" class="com.example.spring02.interceptor.SampleInterceptor"/>
<interceptors>
    <interceptor>
        <!-- 인터셉터 매핑 -->
        <mapping path="/doA"/>
        <mapping path="/doB"/>
        <beans:ref bean="sampleInterceptor"/>
    </interceptor>
</interceptors>

2. 인터셉터 클래스

SampleInterceptor - 인터셉터 요청을 처리할 클래스 작성

package com.example.spring02.interceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;

public class SampleInterceptor extends HandlerInterceptorAdapter{
    // 요청전에 실행
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        System.out.println("pre hanlde.....");
        return true;
    }
    // 요청 후에 실행
    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        System.out.println("post handle....");
    }
}

3. 컨트롤러

HomeController

package com.example.spring02;

import java.text.DateFormat;
import java.util.Date;
import java.util.Locale;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

@Controller
public class HomeController {
    private static final Logger logger = LoggerFactory.getLogger(HomeController.class);
    @RequestMapping(value = "/", method = RequestMethod.GET)
    public String home(Locale locale, Model model) {
        logger.info("Welcome home! The client locale is {}.", locale);
        Date date = new Date();
        DateFormat dateFormat = DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG, locale);
        String formattedDate = dateFormat.format(date);
        model.addAttribute("serverTime", formattedDate );
        return "home";
    }

    // doA 매핑
    @RequestMapping("/doA")
    public String doA(){
        logger.info("doA.....");
        return "home";
    }

    // doB 매핑
    @RequestMapping("/doB")
    public String doB(Model model){
        logger.info("doB.....");
        model.addAttribute("result", "do b result");
        return "home";
    }
}

4. 요청 후 콘솔 확인

Interceptor : pre hanlde.....
14:54:25.891 [http-nio-80-exec-2] INFO [com.example.spring02.HomeController.doA:30]-
                doA.....
Interceptor : post handle....

doA요청 후 콘솔확인

Interceptor : pre hanlde.....
14:55:05.672 [http-nio-80-exec-5] INFO [com.example.spring02.HomeController.doB:37]-
                doB.....
Interceptor : post handle....

doB요청 후 콘솔 확인