package com.fastcampus.ch2;

import java.util.Date;

import javax.servlet.http.HttpServletRequest;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestParam;

@Controller

public class RequestParamTest {

@RequestMapping("/requestParam")

public String main(HttpServletRequest request) {

String year = request.getParameter("year");

// http://localhost/ch2/requestParam ---->> year=null

// http://localhost/ch2/requestParam?year= ---->> year=""

// http://localhost/ch2/requestParam?year ---->> year=""

System.out.printf("[%s]year=[%s]%n", new Date(), year);

return "yoil";

}

@RequestMapping("/requestParam2")

// public String main2(@RequestParam(name="year", required=false) String year) { // 아래와 동일

public String main2(String year) {

// http://localhost/ch2/requestParam2 ---->> year=null

// http://localhost/ch2/requestParam2?year ---->> year=""

System.out.printf("[%s]year=[%s]%n", new Date(), year);

return "yoil";

}

@RequestMapping("/requestParam3")

// public String main3(@RequestParam(name="year", required=true) String year) { // 아래와 동일

public String main3(@RequestParam String year) {

// http://localhost/ch2/requestParam3 ---->> year=null 400 Bad Request. required=true라서

// http://localhost/ch2/requestParam3?year ---->> year=""

System.out.printf("[%s]year=[%s]%n", new Date(), year);

return "yoil";

}

@RequestMapping("/requestParam4")

public String main4(@RequestParam(required=false) String year) {

// http://localhost/ch2/requestParam4 ---->> year=null

// http://localhost/ch2/requestParam4?year ---->> year=""

System.out.printf("[%s]year=[%s]%n", new Date(), year);

return "yoil";

}

@RequestMapping("/requestParam5")

public String main5(@RequestParam(required=false, defaultValue="1") String year) {

// http://localhost/ch2/requestParam5 ---->> year=1

// http://localhost/ch2/requestParam5?year ---->> year=1

System.out.printf("[%s]year=[%s]%n", new Date(), year);

return "yoil";

}

// =======================================================================

@RequestMapping("/requestParam6")

public String main6(int year) {

// http://localhost/ch2/requestParam6 ---->> 500 java.lang.IllegalStateException: Optional int parameter 'year' is present but cannot be translated into a null value due to being declared as a primitive type. Consider declaring it as object wrapper for the corresponding primitive type.

// http://localhost/ch2/requestParam6?year ---->> 400 Bad Request, nested exception is java.lang.NumberFormatException: For input string: ""

System.out.printf("[%s]year=[%s]%n", new Date(), year);

return "yoil";

}

@RequestMapping("/requestParam7")

public String main7(@RequestParam int year) {

// http://localhost/ch2/requestParam7 ---->> 400 Bad Request, Required int parameter 'year' is not present

// http://localhost/ch2/requestParam7?year ---->> 400 Bad Request, nested exception is java.lang.NumberFormatException: For input string: ""

System.out.printf("[%s]year=[%s]%n", new Date(), year);

return "yoil";

}

@RequestMapping("/requestParam8")

public String main8(@RequestParam(required=false) int year) {

// http://localhost/ch2/requestParam8 ---->> 500 java.lang.IllegalStateException: Optional int parameter 'year' is present but cannot be translated into a null value due to being declared as a primitive type. Consider declaring it as object wrapper for the corresponding primitive type.

// http://localhost/ch2/requestParam8?year ---->> 400 Bad Request, nested exception is java.lang.NumberFormatException: For input string: ""

System.out.printf("[%s]year=[%s]%n", new Date(), year);

return "yoil";

}

@RequestMapping("/requestParam9")

public String main9(@RequestParam(required=true) int year) {

// http://localhost/ch2/requestParam9 ---->> 400 Bad Request, Required int parameter 'year' is not present

// http://localhost/ch2/requestParam9?year ---->> 400 Bad Request, nested exception is java.lang.NumberFormatException: For input string: ""

System.out.printf("[%s]year=[%s]%n", new Date(), year);

return "yoil";

}

@RequestMapping("/requestParam10")

public String main10(@RequestParam(required=true, defaultValue="1") int year) {

// http://localhost/ch2/requestParam10 ---->> year=1

// http://localhost/ch2/requestParam10?year ---->> year=1

System.out.printf("[%s]year=[%s]%n", new Date(), year);

return "yoil";

}

@RequestMapping("/requestParam11")

public String main11(@RequestParam(required=false, defaultValue="1") int year) {

// http://localhost/ch2/requestParam11 ---->> year=1

// http://localhost/ch2/requestParam11?year ---->> year=1

System.out.printf("[%s]year=[%s]%n", new Date(), year);

return "yoil";

}

} // class