From e6697505757b0d3da83cab8525ceaacc9cd0e30d Mon Sep 17 00:00:00 2001
From: Anton Romanov <romanov73@gmail.com>
Date: Tue, 16 Mar 2021 09:43:46 +0400
Subject: [PATCH] #1 -- Add simple mvc form

---
 build.gradle                                  |  1 +
 .../extractor/mvc/GitExtractorController.java | 43 +++++++++++++++
 .../ulstu/extractor/mvc/model/EmailForm.java  | 40 ++++++++++++++
 src/main/resources/templates/error.html       | 53 +++++++++++++++++++
 src/main/resources/templates/index.html       | 30 +++++++++++
 src/main/resources/templates/result.html      | 25 +++++++++
 6 files changed, 192 insertions(+)
 create mode 100644 src/main/java/ru/ulstu/extractor/mvc/GitExtractorController.java
 create mode 100644 src/main/java/ru/ulstu/extractor/mvc/model/EmailForm.java
 create mode 100644 src/main/resources/templates/error.html
 create mode 100644 src/main/resources/templates/index.html
 create mode 100644 src/main/resources/templates/result.html

diff --git a/build.gradle b/build.gradle
index 227b6d5..cb55cf4 100644
--- a/build.gradle
+++ b/build.gradle
@@ -48,6 +48,7 @@ configurations {
 dependencies {
     compile group: 'org.springframework.boot', name: 'spring-boot-starter-web'
     compile group: 'org.springframework.boot', name: 'spring-boot-starter-jetty'
+    compile group: 'org.springframework.boot', name: 'spring-boot-starter-thymeleaf'
     compile group: 'com.fasterxml.jackson.module', name: 'jackson-module-afterburner'
     compile group: 'com.fasterxml.jackson.datatype', name: 'jackson-datatype-hibernate5'
 
diff --git a/src/main/java/ru/ulstu/extractor/mvc/GitExtractorController.java b/src/main/java/ru/ulstu/extractor/mvc/GitExtractorController.java
new file mode 100644
index 0000000..6b02876
--- /dev/null
+++ b/src/main/java/ru/ulstu/extractor/mvc/GitExtractorController.java
@@ -0,0 +1,43 @@
+package ru.ulstu.extractor.mvc;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.ResponseStatus;
+import org.springframework.web.servlet.ModelAndView;
+import ru.ulstu.extractor.mvc.model.EmailForm;
+
+import javax.servlet.http.HttpServletRequest;
+
+@Controller
+public class GitExtractorController {
+    @GetMapping("/")
+    public String indexForm(Model model) {
+        model.addAttribute("emailForm", new EmailForm());
+        return "index";
+    }
+
+    @PostMapping("/sendEmail")
+    public String sendEmail(@ModelAttribute EmailForm emailForm, Model model) {
+        if (emailForm.getTo().isEmpty()) {
+            model.addAttribute("error", "'Кому' не должно быть пустым");
+            return "index";
+        }
+        return "result";
+    }
+
+
+    @ExceptionHandler(Exception.class)
+    @ResponseStatus(HttpStatus.NOT_FOUND)
+    public ModelAndView handleResourceNotFoundException(HttpServletRequest req, Exception ex) {
+        ModelAndView mav = new ModelAndView();
+        mav.addObject("exception", ex);
+        mav.addObject("url", req.getRequestURL());
+        mav.setViewName("error");
+        return mav;
+    }
+}
diff --git a/src/main/java/ru/ulstu/extractor/mvc/model/EmailForm.java b/src/main/java/ru/ulstu/extractor/mvc/model/EmailForm.java
new file mode 100644
index 0000000..59765ee
--- /dev/null
+++ b/src/main/java/ru/ulstu/extractor/mvc/model/EmailForm.java
@@ -0,0 +1,40 @@
+package ru.ulstu.extractor.mvc.model;
+
+public class EmailForm {
+    private String subject;
+    private String to;
+    private String message;
+
+    public String getSubject() {
+        return subject;
+    }
+
+    public void setSubject(String subject) {
+        this.subject = subject;
+    }
+
+    public String getTo() {
+        return to;
+    }
+
+    public void setTo(String to) {
+        this.to = to;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+
+    public void setMessage(String message) {
+        this.message = message;
+    }
+
+    @Override
+    public String toString() {
+        return "EmailForm{" +
+                "subject='" + subject + '\'' +
+                ", to='" + to + '\'' +
+                ", message='" + message + '\'' +
+                '}';
+    }
+}
diff --git a/src/main/resources/templates/error.html b/src/main/resources/templates/error.html
new file mode 100644
index 0000000..dd06612
--- /dev/null
+++ b/src/main/resources/templates/error.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html SYSTEM "http://www.thymeleaf.org/dtd/xhtml1-strict-thymeleaf-spring4-4.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml"
+      xmlns:th="http://www.thymeleaf.org">
+
+<!--<head th:substituteby="header :: copy"></head>-->
+
+<body>
+<h1>Support Friendly Error Page</h1>
+
+<!--  As we are using Thymeleaf, you might consider using
+      ${#httpServletRequest.requestURL}. But that returns the path
+      to this error page.  Hence we explicitly add the url to the
+      Model in some of the example code. -->
+<p th:if="${url}">
+    <b>Page:</b> <span th:text="${url}">Page URL</span>
+</p>
+
+<p th:if="${timestamp}" id='created'>
+    <b>Occurred:</b> <span th:text="${timestamp}">Timestamp</span>
+</p>
+
+<p th:if="${status}">
+    <b>Response Status:</b> <span th:text="${status}">status-code</span> <span
+        th:if="${error}" th:text="'('+${error}+')'">error ...</span>
+</p>
+
+<p th:if="${exception}">
+    <b>Exception:</b> <span th:text="${exception}">exception</span> <span
+</p>
+
+<p>Application has encountered an error. Please contact support on
+    ...</p>
+
+<p>Support may ask you to right click to view page source.</p>
+
+<!--
+  // Hidden Exception Details  - this is not a recommendation, but here is
+  // how you could hide an exception in the page using Thymeleaf
+  -->
+<div th:utext="'&lt;!--'" th:remove="tag"></div>
+<div th:utext="'Failed URL: ' +  ${url}" th:remove="tag">${url}</div>
+<div th:utext="'Exception: ' + ${exception.message}" th:remove="tag">${exception.message}</div>
+<ul th:remove="tag">
+    <li th:each="ste : ${exception.stackTrace}" th:remove="tag"><span
+            th:utext="${ste}" th:remove="tag">${ste}</span></li>
+</ul>
+<div th:utext="'--&gt;'" th:remove="tag"></div>
+
+
+<div th:substituteby="footer :: copy"></div>
+
+</body>
+</html>
\ No newline at end of file
diff --git a/src/main/resources/templates/index.html b/src/main/resources/templates/index.html
new file mode 100644
index 0000000..f37aa8f
--- /dev/null
+++ b/src/main/resources/templates/index.html
@@ -0,0 +1,30 @@
+<!DOCTYPE HTML>
+<html xmlns:th="http://www.thymeleaf.org">
+<head>
+    <title>Простая обработка формы на Spring MVC</title>
+    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
+</head>
+<body>
+<h1>Форма</h1>
+<form action="#" th:action="@{/sendEmail}" th:object="${emailForm}" method="post">
+    <p style="color:red" th:text="${error}"></p>
+    <table>
+        <tr>
+            <td>Тема:</td>
+            <td><input type="text" th:field="*{subject}"/></td>
+        </tr>
+        <tr>
+            <td>Кому:</td>
+            <td><input type="text" th:field="*{to}"/></td>
+        </tr>
+        <tr>
+            <td>Сообщение:</td>
+            <td><textarea th:field="*{message}"/></td>
+        </tr>
+        <tr>
+            <td colspan="2"><input type="submit" value="Отправить"/></td>
+        </tr>
+    </table>
+</form>
+</body>
+</html>
diff --git a/src/main/resources/templates/result.html b/src/main/resources/templates/result.html
new file mode 100644
index 0000000..08a784e
--- /dev/null
+++ b/src/main/resources/templates/result.html
@@ -0,0 +1,25 @@
+<!DOCTYPE HTML>
+<html xmlns:th="http://www.thymeleaf.org">
+<head>
+    <title>Простая обработка формы на Spring MVC</title>
+    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
+</head>
+<body>
+<h1>Результат обработки формы</h1>
+<table>
+    <tr>
+        <td>Тема:</td>
+        <td><p th:text="${emailForm.subject}"/></td>
+    </tr>
+    <tr>
+        <td>Кому:</td>
+        <td><p th:text="${emailForm.to}"/></td>
+    </tr>
+    <tr>
+        <td>Сообщение:</td>
+        <td><p th:text="${emailForm.message}"/></td>
+    </tr>
+</table>
+<a href="/">Отправить другое сообщение</a>
+</body>
+</html>