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//Pekka Helenius <fincer89@hotmail.com>, Fjordtek 2020
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package com.fjordtek.chapter2_task1_thymeleaf.web;
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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.ResponseStatus;
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import org.springframework.http.HttpStatus;
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import javax.servlet.http.HttpServletRequest;
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@Controller
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public class HttpController {
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protected static final String helloPageTemplateURL = "hello";
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protected static final String helloPageDefaultName = "Noname";
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protected static final String helloPageDefaultAge = "0";
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private HttpServerLogger httpServerLogger = new HttpServerLogger();
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private HttpExceptionHandler httpExceptionHandler = new HttpExceptionHandler();
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// User input values: Handle situation where user access URL with required parameters
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@RequestMapping(
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value = helloPageTemplateURL,
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method = RequestMethod.GET,
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params = { "name", "age" }
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)
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public String HelloWebForm(
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@RequestParam(
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value = "name",
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required = true
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//defaultValue = "Noname"
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) String name,
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@RequestParam(
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value = "age",
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required = true
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//defaultValue = "0"
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) String age,
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HttpServletRequest requestData
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) {
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// Preliminary checks
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if (name == null || age == null ||
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requestData.getParameterMap().size() > 2
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) {
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return "Give two GET parameters: 'name' and 'age'\n";
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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 helloPageTemplateURL;
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}
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// Supply default values: Handle situation where user access URL without required parameters
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@RequestMapping(
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value = helloPageTemplateURL,
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method = RequestMethod.GET
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)
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public String HelloWebNullForm() {
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return "redirect:" + helloPageTemplateURL + "?name=" + helloPageDefaultName + "&age=" + helloPageDefaultAge;
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}
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// Redirect: Handle situation where user access root URL
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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 String redirectToHelloWebForm() {
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return this.HelloWebNullForm();
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}
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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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public String ErrorWebForm(HttpServletRequest requestData) {
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return httpExceptionHandler.notFoundErrorHandler(requestData);
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}
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}
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