备份代码

build.gradle.kts

@@ -1,6 +1,11 @@
 val ktor_version: String by project
 val kotlin_version: String by project
 val logback_version: String by project
+val exposed_version: String by project
+val h2_version: String by project
+val hikaricp_version: String by project
+val ehcache_version: String by project
+val mysql_driver_version: String by project
 
 plugins {
     kotlin("jvm") version "1.9.23"
@@ -29,7 +34,22 @@ dependencies {
     implementation("io.ktor:ktor-server-freemarker-jvm")
     implementation("io.ktor:ktor-server-netty-jvm")
     implementation("ch.qos.logback:logback-classic:$logback_version")
+
     implementation("io.ktor:ktor-server-config-yaml:2.3.10")
+    // Exposed
+    implementation("org.jetbrains.exposed:exposed-core:$exposed_version")
+    implementation("org.jetbrains.exposed:exposed-dao:$exposed_version")
+    implementation("org.jetbrains.exposed:exposed-jdbc:$exposed_version")
+    implementation("org.jetbrains.exposed:exposed-java-time:$exposed_version")
+    implementation("com.h2database:h2:$h2_version")
+
+    //pool
+    implementation("com.zaxxer:HikariCP:$hikaricp_version")
+    implementation("org.ehcache:ehcache:$ehcache_version")
+
+    //mysql
+    implementation("mysql:mysql-connector-java:$mysql_driver_version")
+
     testImplementation("io.ktor:ktor-server-tests-jvm")
     testImplementation("org.jetbrains.kotlin:kotlin-test-junit:$kotlin_version")
 }

gradle.properties

@@ -2,3 +2,8 @@ ktor_version=2.3.10
 kotlin_version=1.9.23
 logback_version=1.4.14
 kotlin.code.style=official
+exposed_version = 0.41.1
+h2_version = 2.2.224
+hikaricp_version = 5.1.0
+ehcache_version = 3.10.8
+mysql_driver_version = 8.0.32

src/main/kotlin/echo/org/Application.kt

@@ -1,7 +1,13 @@
 package echo.org
 
-import echo.org.plugins.*
+import com.zaxxer.hikari.HikariDataSource
+import echo.org.instructure.DatabaseSingleton
+import echo.org.plugins.configureRouting
+import echo.org.plugins.configureSecurity
+import echo.org.plugins.configureSerialization
+import echo.org.plugins.configureTemplating
 import io.ktor.server.application.*
+import org.jetbrains.exposed.sql.Database
 
 fun main(args: Array<String>) {
     io.ktor.server.netty.EngineMain.main(args)
@@ -12,4 +18,17 @@ fun Application.module() {
     configureSerialization()
     configureTemplating()
     configureRouting()
+    initDatabase()
+}
+
+fun Application.initDatabase() {
+    val config = environment.config.config("storage")
+    val dateSourceConfig = DatabaseSingleton.createHikariDataSource(
+        url = config.property("jdbcURL").getString(),
+        driver = config.property("driverClassName").getString(),
+        usernameInput = config.property("username").getString(),
+        passwordInput = config.property("password").getString()
+    )
+    val dataSource = HikariDataSource(dateSourceConfig)
+    Database.connect(dataSource)
 }

src/main/kotlin/echo/org/domain/Documents.kt

@@ -1,9 +1,28 @@
 package echo.org.domain
 
-data class Document(val id: Long, val content: String,val name: String)
+import echo.org.instructure.Documents
+import org.jetbrains.exposed.dao.LongEntity
+import org.jetbrains.exposed.dao.LongEntityClass
+import org.jetbrains.exposed.dao.id.EntityID
+import java.time.LocalDateTime
 
-val Documents : MutableList<Document> = mutableListOf(
+class Document(id: EntityID<Long>) : LongEntity(id) {
-    Document(1,"测试1","测试名称1"),
+    companion object : LongEntityClass<Document>(Documents)
-    Document(2,"测试2","测试名称2"),
+    var title: String by Documents.title
-    Document(3,"测试3","测试名称3"),
+    var content: String by Documents.content
-)
+    var authorId: String by Documents.authorId
+    var createdAt: LocalDateTime by Documents.createdAt
+    var updatedAt: LocalDateTime by Documents.updatedAt
+    var fileSize: String by Documents.fileSize
+}
+
+
+interface DocumentRepository {
+    suspend fun save(document: Document): Document?
+    suspend fun findById(id: Long): Document?
+    suspend fun deleteById(id: Long): Boolean
+    suspend fun pageQuery(documentQueryParam:DocumentQueryParam): PageResult<Document>
+}
+
+data class DocumentQueryParam(var title: String? = null,
+                              var authorId: String? = null) : BasePageQueryParm()

src/main/kotlin/echo/org/domain/ValueObject.kt

@@ -24,3 +24,16 @@ data class Result<T>(
         }
     }
 }
+
+data class PageResult<T>(
+    val results: List<T>,          // 查询结果列表
+    val totalCount: Long          // 总记录数
+) {
+//    companion object {
+//        fun <T> of(results: List<T>,totalCount: Long   ): PageResult<T> {
+//            return PageResult()
+//        }
+//    }
+}
+
+open class BasePageQueryParm(var pageNum: Int = 1, var pageSize: Int = 10)

src/main/kotlin/echo/org/instructure/Database.kt

@@ -0,0 +1,36 @@
+package echo.org.instructure
+
+import com.zaxxer.hikari.HikariConfig
+import com.zaxxer.hikari.HikariDataSource
+import io.ktor.server.config.*
+import kotlinx.coroutines.Dispatchers
+import org.jetbrains.exposed.sql.transactions.experimental.newSuspendedTransaction
+
+object DatabaseSingleton {
+
+    fun init(config: ApplicationConfig) {
+        val driverClassName = config.property("storage.driverClassName").getString()
+        val jdbcURL = config.property("storage.jdbcURL").getString() +
+                config.propertyOrNull("storage.database")?.getString()
+
+    }
+
+    fun createHikariDataSource(
+        url: String,
+        driver: String,
+        usernameInput: String,
+        passwordInput: String
+    ) = HikariDataSource(HikariConfig().apply {
+        driverClassName = driver
+        jdbcUrl = url
+        username = usernameInput
+        password = passwordInput
+        maximumPoolSize = 30
+        isAutoCommit = false
+        transactionIsolation = "TRANSACTION_REPEATABLE_READ"
+        validate()
+    })
+
+    suspend fun <T> dbQuery(block: suspend () -> T): T =
+        newSuspendedTransaction(Dispatchers.IO) { block() }
+}

src/main/kotlin/echo/org/instructure/Exposed.kt

@@ -0,0 +1,81 @@
+package echo.org.instructure
+
+import echo.org.domain.Document
+import echo.org.domain.DocumentQueryParam
+import echo.org.domain.DocumentRepository
+import echo.org.domain.PageResult
+import echo.org.instructure.DatabaseSingleton.dbQuery
+import org.jetbrains.exposed.dao.id.LongIdTable
+import org.jetbrains.exposed.sql.Column
+import org.jetbrains.exposed.sql.SqlExpressionBuilder.eq
+import org.jetbrains.exposed.sql.andWhere
+import org.jetbrains.exposed.sql.deleteWhere
+import org.jetbrains.exposed.sql.javatime.datetime
+import org.jetbrains.exposed.sql.selectAll
+import java.time.LocalDateTime
+
+
+object Documents : LongIdTable() {
+    val title: Column<String> = varchar("title", 255)
+    val content: Column<String> = text("content")
+    val authorId: Column<String> = varchar("author_id", 50)
+    val createdAt: Column<LocalDateTime> = datetime("created_at")
+    val updatedAt: Column<LocalDateTime> = datetime("updated_at")
+    val fileSize: Column<String> = varchar("file_size", 255)
+}
+
+
+class DocumentRepositoryImpl : DocumentRepository {
+
+    override suspend fun save(document: Document): Document = dbQuery {
+        // 检查文档是否有有效的ID
+        val existingDocument = document.id.let {
+            Document.findById(it)
+        }
+        // 如果文档存在，则更新，否则创建新文档
+        existingDocument?.apply {
+            title = document.title
+            content = document.content
+            authorId = document.authorId
+            createdAt = document.createdAt
+            updatedAt = LocalDateTime.now() // 更新时间应为当前时间
+            fileSize = document.fileSize
+        } ?: Document.new {
+            title = document.title
+            content = document.content
+            authorId = document.authorId
+            createdAt = document.createdAt
+            updatedAt = document.updatedAt
+            fileSize = document.fileSize
+        }
+    }
+
+    override suspend fun findById(id: Long): Document? = dbQuery {
+        Document.find { Documents.id eq id }.firstOrNull()
+    }
+
+    override suspend fun deleteById(id: Long): Boolean {
+        Document.find { Documents.id eq id }
+            .firstOrNull()?.delete()
+        return Documents.deleteWhere { Documents.id eq id } > 0
+    }
+
+    override suspend fun pageQuery(documentQueryParam: DocumentQueryParam): PageResult<Document> {
+        // 构建查询条件
+        val query = Documents.selectAll().apply {
+            documentQueryParam.authorId?.let {
+                andWhere { Documents.authorId eq documentQueryParam.authorId!! }
+            }
+            documentQueryParam.title?.let {
+                andWhere { Documents.title like "%${documentQueryParam.title}%" }
+            }
+        }
+        val pageSize = documentQueryParam.pageSize ?: 10  // 默认页面大小
+        val pageIndex = documentQueryParam.pageNum ?: 0  // 默认页码
+        val offset = pageSize * pageIndex.toLong()
+        // 执行查询
+        val count = query.count()
+        val documentList = query.limit(pageSize, offset).map { Document.wrapRow(it) }
+        return PageResult(documentList, count)
+    }
+}

src/main/kotlin/echo/org/plugins/Routing.kt

@@ -1,7 +1,7 @@
 package echo.org.plugins
 
 
-import echo.org.domain.Documents
+import echo.org.domainDocuments
 import echo.org.domain.Result
 import io.ktor.http.content.*
 import io.ktor.server.application.*
@@ -17,7 +17,7 @@ fun Application.configureRouting() {
         staticResources("/files", "files")
         route("/documents") {
             get("") {
-                val model = mapOf("Documents" to Documents)
+
                 call.respond(FreeMarkerContent("index.ftl", model, "e"))
             }
             post("/add") {

src/main/resources/application.yaml

@@ -4,3 +4,11 @@ ktor:
       - echo.org.ApplicationKt.module
   deployment:
     port: 8080
+
+
+storage:
+  driverClassName:  "com.mysql.cj.jdbc.Driver"
+  jdbcURL: "jdbc:mysql://47.97.21.20:3306/"
+  database: "document"
+  username: "documentAdmin"
+  password: "123456"