InterceptorConfig Kotlin example

main.kt

package com.sazzad

import org.springframework.beans.factory.annotation.Autowired
import org.springframework.boot.autoconfigure.SpringBootApplication
import org.springframework.boot.builder.SpringApplicationBuilder
import org.springframework.context.annotation.ComponentScan
import org.springframework.context.annotation.Configuration
import org.springframework.stereotype.Component
import org.springframework.web.servlet.HandlerInterceptor
import org.springframework.web.servlet.ModelAndView
import org.springframework.web.servlet.config.annotation.EnableWebMvc
import org.springframework.web.servlet.config.annotation.InterceptorRegistry
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter
import javax.servlet.http.HttpServletRequest
import javax.servlet.http.HttpServletResponse

@SpringBootApplication
@Configuration
@EnableWebMvc
@ComponentScan
open class WebConfig() : WebMvcConfigurerAdapter() {
    
    @Autowired
    lateinit var interceptorConfig: InterceptorConfig

    override fun addInterceptors(registry: InterceptorRegistry) {
        registry.addInterceptor(interceptorConfig)
    }
}

@Component
open class InterceptorConfig: HandlerInterceptor {
    override fun preHandle(request: HttpServletRequest?, response: HttpServletResponse?, handler: Any?): Boolean {
        return true
    }

    override fun postHandle(request: HttpServletRequest?, response: HttpServletResponse?, handler: Any?, modelAndView: ModelAndView?) {
    }

    override fun afterCompletion(request: HttpServletRequest?, response: HttpServletResponse?, handler: Any?, ex: Exception?) {
    }
}

fun main(args: Array<String>) {
    SpringApplicationBuilder(WebConfig::class.java).run(*args)
}