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Merge pull request #753 from fabiotadashi/KTLN-609/ktor-thymeleaf
Ktln 609/ktor thymeleaf
2 parents 8451b90 + 5ed9458 commit d8359fa

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lines changed

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+454
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lines changed

‎kotlin-ktor/build.gradle.kts

Lines changed: 9 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -4,6 +4,9 @@ description = "Example usage of Gradle plugin to generate GraphQL Kotlin Client"
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val graphQLKotlinVersion = "7.0.1"
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val ktorVersion = "2.3.5"
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val logbackVersion = "1.4.14"
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val kotlinTestUnit = "1.9.10"
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val seleniumVersion = "4.16.1"
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repositories {
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mavenCentral()
@@ -18,16 +21,21 @@ dependencies {
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implementation("io.ktor", "ktor-server-core", ktorVersion)
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implementation("io.ktor", "ktor-server-netty", ktorVersion)
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implementation("io.ktor", "ktor-server-websockets", ktorVersion)
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implementation("io.ktor","ktor-server-status-pages", ktorVersion)
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implementation("io.ktor", "ktor-server-thymeleaf-jvm", ktorVersion)
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implementation("io.ktor", "ktor-client-auth", ktorVersion)
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implementation("io.ktor", "ktor-client-websockets", ktorVersion)
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implementation("io.ktor", "ktor-serialization-jackson", ktorVersion)
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implementation("io.ktor", "ktor-client-content-negotiation", ktorVersion)
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implementation("ch.qos.logback","logback-classic", logbackVersion)
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testImplementation("io.ktor", "ktor-client-mock", ktorVersion)
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testImplementation("io.ktor", "ktor-server-tests", ktorVersion)
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testImplementation("io.ktor", "ktor-serialization-kotlinx-json", ktorVersion)
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testImplementation("org.jetbrains.kotlin", "kotlin-test-junit", "1.9.10")
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testImplementation("org.jetbrains.kotlin", "kotlin-test-junit", kotlinTestUnit)
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testImplementation("org.seleniumhq.selenium", "selenium-java", seleniumVersion)
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}
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plugins {

‎kotlin-ktor/src/main/java/com/baeldung/thymeleaf/data/DataHolder.kt

Lines changed: 48 additions & 0 deletions
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@@ -0,0 +1,48 @@
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package com.baeldung.thymeleaf.data
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import io.ktor.http.*
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object DataHolder {
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fun getStudentList() = studentsList
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fun findStudentById(id: String?) = getStudentList().first { student -> student.id == id }
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fun updateGrades(studentId: String?, parameters: Parameters) {
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findStudentById(studentId)
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.gradeList.forEach { grade ->
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grade.apply {
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gradeValue = parameters[grade.id]?.let { GradeValue.valueOf(it) }
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}
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}
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}
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private val studentsList = listOf(
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Student(
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id = "1",
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firstName = "Michael",
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lastName = "Smith",
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gradeList = createGradeList()
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),
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Student(
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id = "2",
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firstName = "Mary",
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lastName = "Johnson",
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gradeList = createGradeList()
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),
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Student(
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id = "3",
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firstName = "John",
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lastName = "Doe",
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gradeList = createGradeList()
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),
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)
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private fun createGradeList() = listOf(
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Grade(id = "1", subject = "Reading"),
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Grade(id = "2", subject = "Writing"),
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Grade(id = "3", subject = "Science"),
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Grade(id = "4", subject = "Mathematics"),
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)
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}

‎kotlin-ktor/src/main/java/com/baeldung/thymeleaf/data/Grade.kt

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@@ -0,0 +1,7 @@
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package com.baeldung.thymeleaf.data
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data class Grade (
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val id: String,
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val subject: String,
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var gradeValue: GradeValue? = GradeValue.EMPTY
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)

‎kotlin-ktor/src/main/java/com/baeldung/thymeleaf/data/GradeValue.kt

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package com.baeldung.thymeleaf.data
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enum class GradeValue(val displayValue: String) {
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A("A"),
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A_PLUS("A+"),
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A_MINUS("A-"),
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B("B"),
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B_PLUS("B+"),
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B_MINUS("B-"),
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C("C"),
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C_PLUS("C+"),
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C_MINUS("C-"),
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D("D"),
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D_PLUS("D+"),
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D_MINUS("D-"),
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F("F"),
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EMPTY("")
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}

‎kotlin-ktor/src/main/java/com/baeldung/thymeleaf/data/Student.kt

Lines changed: 14 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,14 @@
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package com.baeldung.thymeleaf.data
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3+
data class Student(
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val id: String,
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val firstName: String,
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val lastName: String,
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val gradeList: List<Grade>,
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) {
9+
val fullName: String
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get() = "$firstName $lastName"
11+
12+
val hasAllGrades: Boolean
13+
get() = gradeList.firstOrNull { grade -> grade.gradeValue == GradeValue.EMPTY} == null
14+
}

‎kotlin-ktor/src/main/java/com/baeldung/thymeleaf/server/ThymeleafKtorApplication.kt

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package com.baeldung.thymeleaf.server
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import com.baeldung.thymeleaf.server.plugins.configureRouting
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import com.baeldung.thymeleaf.server.plugins.configureStatusPages
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import com.baeldung.thymeleaf.server.plugins.configureTemplating
6+
import io.ktor.server.engine.*
7+
import io.ktor.server.netty.*
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fun main() {
10+
embeddedServer(Netty, port = 8080, host = "0.0.0.0") {
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configureTemplating()
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configureRouting()
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configureStatusPages()
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}.start(wait = true)
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}

‎kotlin-ktor/src/main/java/com/baeldung/thymeleaf/server/plugins/Routing.kt

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@@ -0,0 +1,32 @@
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package com.baeldung.thymeleaf.server.plugins
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import com.baeldung.thymeleaf.data.DataHolder
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import com.baeldung.thymeleaf.data.GradeValue
5+
import io.ktor.server.application.*
6+
import io.ktor.server.request.*
7+
import io.ktor.server.response.*
8+
import io.ktor.server.routing.*
9+
import io.ktor.server.thymeleaf.*
10+
11+
fun Application.configureRouting() {
12+
routing {
13+
get("/") {
14+
call.respond(ThymeleafContent("index", mapOf("studentList" to DataHolder.getStudentList())))
15+
}
16+
get("/report-card/{id}") {
17+
call.respond(
18+
ThymeleafContent("report-card",
19+
mapOf(
20+
"student" to DataHolder.findStudentById(call.parameters["id"]),
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"gradeOptionList" to GradeValue.entries
22+
)
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)
24+
)
25+
}
26+
post("/report-card/{id}") {
27+
val parameters = call.receiveParameters()
28+
DataHolder.updateGrades(call.parameters["id"], parameters)
29+
call.respondRedirect("/", false)
30+
}
31+
}
32+
}

‎kotlin-ktor/src/main/java/com/baeldung/thymeleaf/server/plugins/StatusPages.kt

Lines changed: 15 additions & 0 deletions
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package com.baeldung.thymeleaf.server.plugins
2+
3+
import io.ktor.http.*
4+
import io.ktor.server.application.*
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import io.ktor.server.plugins.statuspages.*
6+
import io.ktor.server.response.*
7+
import io.ktor.server.thymeleaf.*
8+
9+
fun Application.configureStatusPages() {
10+
install(StatusPages) {
11+
status(HttpStatusCode.NotFound) { call, _ ->
12+
call.respond(ThymeleafContent("error404", mapOf("message" to "Sorry! Page was not found.")))
13+
}
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}
15+
}

‎kotlin-ktor/src/main/java/com/baeldung/thymeleaf/server/plugins/Templating.kt

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1+
package com.baeldung.thymeleaf.server.plugins
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3+
import io.ktor.server.application.*
4+
import io.ktor.server.thymeleaf.*
5+
import org.thymeleaf.templateresolver.ClassLoaderTemplateResolver
6+
7+
fun Application.configureTemplating() {
8+
install(Thymeleaf) {
9+
setTemplateResolver(ClassLoaderTemplateResolver().apply {
10+
prefix = "templates/"
11+
suffix = ".html"
12+
characterEncoding = "utf-8"
13+
})
14+
}
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}

‎kotlin-ktor/src/main/resources/templates/error404.html

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<!DOCTYPE html >
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<html xmlns:th="http://www.thymeleaf.org">
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<head>
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<meta charset="UTF-8">
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<title>Error</title>
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<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css"
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rel="stylesheet"
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integrity="sha384-T3c6CoIi6uLrA9TneNEoa7RxnatzjcDSCmG1MXxSR1GAsXEV/Dwwykc2MPK8M2HN"
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crossorigin="anonymous">
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</head>
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<body>
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<div class="container">
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<h2>Error</h2>
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<p th:text="${message}" />
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</div>
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<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js"
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integrity="sha384-C6RzsynM9kWDrMNeT87bh95OGNyZPhcTNXj1NW7RuBCsyN/o0jlpcV8Qyq46cDfL"
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crossorigin="anonymous"/>
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</body>
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</html>

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