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// Pekka Helenius <fincer89@hotmail.com>, Fjordtek 2020
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package com.fjordtek.chapter1_httprequest.web;
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import org.springframework.http.HttpStatus;
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import org.springframework.http.ResponseEntity;
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import org.springframework.stereotype.Controller;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RequestMethod;
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import org.springframework.web.bind.annotation.RequestParam;
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import org.springframework.web.bind.annotation.ResponseBody;
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import org.springframework.web.bind.annotation.ResponseStatus;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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//import com.fjordtek.chapter1_httprequest.web.PageMapper;
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@Controller
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@ResponseBody
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public class HttpRequestHandler {
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protected static final String indexPageURL = "index";
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protected static final String contactPageURL = "contact";
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protected static final String helloPageURL = "hello";
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private PageMapper pageMapper = new PageMapper();
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private HttpServerLogger httpServerLogger = new HttpServerLogger();
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private HttpExceptionHandler httpExceptionHandler = new HttpExceptionHandler();
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private ResponseEntity<String> generateDefaultWebsiteResponse(
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String webPageURL,
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String HumanReadableName,
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HttpServletRequest clientRequestData
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) {
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String siteName = pageMapper.mapWebPageNames(webPageURL, HumanReadableName);
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httpServerLogger.logMessageNormal(
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clientRequestData,
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"HTTPOK"
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);
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return new ResponseEntity<>(
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"This is the " + siteName + " page\n",
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HttpStatus.OK
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);
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}
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// Assignment 1 - controller and endpoints
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@RequestMapping(
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value = indexPageURL,
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method = RequestMethod.GET
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)
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public ResponseEntity<String> generateIndexPage(HttpServletRequest requestData) {
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return generateDefaultWebsiteResponse(
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indexPageURL,
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"main",
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requestData
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);
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}
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@RequestMapping(
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value = contactPageURL,
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method = RequestMethod.GET
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)
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public ResponseEntity<String> generateContactPage(HttpServletRequest requestData) {
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return generateDefaultWebsiteResponse(
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contactPageURL,
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"contact",
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requestData
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);
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}
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// Redirect hard-set root URL / to index subpage
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// (~default landing page on many web server configurations (index.php, index.html, ...) )
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@RequestMapping(
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value = "/",
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method = RequestMethod.GET
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)
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@ResponseStatus(HttpStatus.FOUND)
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public void redirectToIndex(HttpServletResponse serverResponse) {
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serverResponse.setHeader("Location", "/" + indexPageURL);
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serverResponse.setStatus(302);
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}
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/*
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Alternatively:
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ResponseEntity<Void> redirectToIndex() {
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return ResponseEntity.status(HttpStatus.FOUND)
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.location(URI.create("/" + indexPageURL))
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.build();
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}
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*/
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// Assignment 2 - Request parameters
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/*
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* Multiple parameters given (see that 'method' can have multiple values assigned
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* Just a brief example/demonstration
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* NOTE: MIME type 'x-www-form-urlencoded' works with curl, at least. Change it if needed.
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* curl 'http://localhost:8080/index' --data 'location=moon&name=John'
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*
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*/
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@RequestMapping(
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value = { helloPageURL },
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method = { RequestMethod.GET },
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params = { "location", "name" }
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)
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public ResponseEntity<String> getNameAndLocation(
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@RequestParam(
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value = "location",
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required = true,
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defaultValue = ""
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) String location,
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@RequestParam(
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value = "name",
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required = true,
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defaultValue = ""
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) String name,
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HttpServletRequest requestData
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)
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{
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if (location == null ||
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name == null ||
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location.equals("") ||
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name.equals("") ||
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requestData.getParameterMap().size() > 2
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) {
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return httpExceptionHandler.notFoundErrorHandler(requestData);
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}
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httpServerLogger.logMessageNormal(
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requestData,
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"HTTPOK"
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);
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return new ResponseEntity<>(
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"Welcome to the " + location + " " + name + "!\n",
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HttpStatus.OK
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);
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}
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}
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