I'm trying to learn Vert.x by creating a small ReST API. Everything went smooth until I added the database backend. I chose Postgres as a database. My issue comes when a java.time LocalDate is being parsed into JSON. As far as I understand I need the jackson backend to parse it. I added it into my classpath through maven dependencies. The dependcy is there but the framework spits an Exception as it can't find the jackson plugin called jackson-datatype-jsr310. Well it IS there so i'm a bit stuck...
I am using Vert.x 4 and java 16, I develop on Windows 10 with IntelliJ IDEA.
openjdk 16.0.1 2021-04-20
OpenJDK Runtime Environment AdoptOpenJDK-16.0.1 9 (build 16.0.1 9)
OpenJDK 64-Bit Server VM AdoptOpenJDK-16.0.1 9 (build 16.0.1 9, mixed mode, sharing)
My pom
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.example</groupId>
<artifactId>myapi</artifactId>
<version>1.0.0-SNAPSHOT</version>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven-compiler-plugin.version>3.8.1</maven-compiler-plugin.version>
<maven-shade-plugin.version>3.2.4</maven-shade-plugin.version>
<maven-surefire-plugin.version>2.22.2</maven-surefire-plugin.version>
<exec-maven-plugin.version>3.0.0</exec-maven-plugin.version>
<vertx.version>4.1.4</vertx.version>
<junit-jupiter.version>5.8.0</junit-jupiter.version>
<log4j.version>2.14.1</log4j.version>
<jackson.version>2.13.0-rc2</jackson.version>
<main.verticle>dev.schaw.myapi.MainVerticle</main.verticle>
<launcher.class>io.vertx.core.Launcher</launcher.class>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>io.vertx</groupId>
<artifactId>vertx-stack-depchain</artifactId>
<version>${vertx.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.datatype</groupId>
<artifactId>jackson-datatype-jsr310</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>io.vertx</groupId>
<artifactId>vertx-web</artifactId>
</dependency>
<dependency>
<groupId>io.vertx</groupId>
<artifactId>vertx-junit5</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<version>${junit-jupiter.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
<version>${junit-jupiter.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>io.vertx</groupId>
<artifactId>vertx-config</artifactId>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-slf4j-impl</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency>
<groupId>io.vertx</groupId>
<artifactId>vertx-pg-client</artifactId>
<version>${vertx.version}</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>${maven-compiler-plugin.version}</version>
<configuration>
<release>11</release>
</configuration>
</plugin>
<plugin>
<artifactId>maven-shade-plugin</artifactId>
<version>${maven-shade-plugin.version}</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<transformers>
<transformer
implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<manifestEntries>
<Main-Class>${launcher.class}</Main-Class>
<Main-Verticle>${main.verticle}</Main-Verticle>
</manifestEntries>
</transformer>
<transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
</transformers>
<outputFile>${project.build.directory}/${project.artifactId}-${project.version}-fat.jar
</outputFile>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>${maven-surefire-plugin.version}</version>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>${exec-maven-plugin.version}</version>
<configuration>
<mainClass>io.vertx.core.Launcher</mainClass>
<arguments>
<argument>run</argument>
<argument>${main.verticle}</argument>
</arguments>
</configuration>
</plugin>
</plugins>
</build>
</project>
My verticle
package dev.schaw.myapi;
import io.vertx.config.ConfigRetriever;
import io.vertx.config.ConfigRetrieverOptions;
import io.vertx.config.ConfigStoreOptions;
import io.vertx.core.AbstractVerticle;
import io.vertx.core.AsyncResult;
import io.vertx.core.http.HttpMethod;
import io.vertx.core.http.HttpServer;
import io.vertx.core.http.HttpServerResponse;
import io.vertx.core.json.JsonObject;
import io.vertx.ext.web.Router;
import io.vertx.pgclient.PgConnectOptions;
import io.vertx.pgclient.PgPool;
import io.vertx.sqlclient.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class MainVerticle extends AbstractVerticle {
private HttpServer server;
private Router router;
private Logger logger;
private SqlClient sqlClient;
@Override
public void start() {
server = vertx.createHttpServer();
router = Router.router(vertx);
logger = LoggerFactory.getLogger(MainVerticle.class);
ConfigRetriever retriever = ConfigRetriever.create(vertx, new ConfigRetrieverOptions()
.addStore(new ConfigStoreOptions()
.setType("file")
.setConfig(new JsonObject().put("path", "config.json"))));
retriever.getConfig(this::onConfigRetrieved);
}
public void onConfigRetrieved(AsyncResult<JsonObject> configAsyncResult){
JsonObject config = configAsyncResult.result();
JsonObject dataConnection = config.getJsonObject("myapi").getJsonObject("dataConnection");
PgConnectOptions connectOptions = new PgConnectOptions()
.setHost(dataConnection.getString("host"))
.setPort(dataConnection.getInteger("port"))
.setDatabase(dataConnection.getString("database"))
.setUser(dataConnection.getString("user"))
.setPassword(dataConnection.getString("password"));
PoolOptions poolOptions = new PoolOptions().setMaxSize(5);
sqlClient = PgPool.pool(vertx, connectOptions, poolOptions);
router.route(HttpMethod.GET, "/").handler(ctx -> {
logger.info("received a request");
HttpServerResponse response = ctx.response();
response.putHeader("content-type", "text/plain");
response.end("Hello World!\n");
});
router.get("/data").handler(ctx -> {
sqlClient.preparedQuery("SELECT * FROM sample_data WHERE id=$1")
.execute(Tuple.of(1), queryAsyncResult -> {
RowSet<Row> set = queryAsyncResult.result();
if(set.rowCount() != 1){
ctx.fail(404);
}
Row r = set.iterator().next();
JsonObject body = new JsonObject().put("id", r.getInteger("id"))
.put("name", r.getString("name"))
.put("date", r.getLocalDate("date"));
ctx.response().putHeader("content-type", "application/json").end(body.encode());
});
});
int port = config
.getJsonObject("myapi")
.getJsonObject("server")
.getInteger("port");
server.requestHandler(router).listen(port);
}
}
The database init script
create table sample_data (
id serial primary key,
name varchar(80) not null,
date date not null
);
And here is the exception
you can check the classpath here.
"C:\Program Files\AdoptOpenJDK\jdk-16.0.1.9-hotspot\bin\java.exe" -agentlib:jdwp=transport=dt_socket,address=127.0.0.1:53414,suspend=y,server=n -javaagent:C:\Users\willi\AppData\Local\JetBrains\Toolbox\apps\IDEA-U\ch-0\212.5284.40\plugins\java\lib\rt\debugger-agent.jar -Dfile.encoding=UTF-8 -classpath C:\Users\willi\Projects\myapi\target\classes;C:\Users\willi\.m2\repository\com\fasterxml\jackson\core\jackson-core\2.13.0-rc2\jackson-core-2.13.0-rc2.jar;C:\Users\willi\.m2\repository\com\fasterxml\jackson\core\jackson-databind\2.13.0-rc2\jackson-databind-2.13.0-rc2.jar;C:\Users\willi\.m2\repository\com\fasterxml\jackson\core\jackson-annotations\2.13.0-rc2\jackson-annotations-2.13.0-rc2.jar;C:\Users\willi\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jsr310\2.13.0-rc2\jackson-datatype-jsr310-2.13.0-rc2.jar;C:\Users\willi\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jdk8\2.13.0-rc2\jackson-datatype-jdk8-2.13.0-rc2.jar;C:\Users\willi\.m2\repository\io\vertx\vertx-web\4.1.4\vertx-web-4.1.4.jar;C:\Users\willi\.m2\repository\io\vertx\vertx-web-common\4.1.4\vertx-web-common-4.1.4.jar;C:\Users\willi\.m2\repository\io\vertx\vertx-auth-common\4.1.4\vertx-auth-common-4.1.4.jar;C:\Users\willi\.m2\repository\io\vertx\vertx-bridge-common\4.1.4\vertx-bridge-common-4.1.4.jar;C:\Users\willi\.m2\repository\io\vertx\vertx-core\4.1.4\vertx-core-4.1.4.jar;C:\Users\willi\.m2\repository\io\netty\netty-common\4.1.67.Final\netty-common-4.1.67.Final.jar;C:\Users\willi\.m2\repository\io\netty\netty-buffer\4.1.67.Final\netty-buffer-4.1.67.Final.jar;C:\Users\willi\.m2\repository\io\netty\netty-transport\4.1.67.Final\netty-transport-4.1.67.Final.jar;C:\Users\willi\.m2\repository\io\netty\netty-handler\4.1.67.Final\netty-handler-4.1.67.Final.jar;C:\Users\willi\.m2\repository\io\netty\netty-codec\4.1.67.Final\netty-codec-4.1.67.Final.jar;C:\Users\willi\.m2\repository\io\netty\netty-handler-proxy\4.1.67.Final\netty-handler-proxy-4.1.67.Final.jar;C:\Users\willi\.m2\repository\io\netty\netty-codec-socks\4.1.67.Final\netty-codec-socks-4.1.67.Final.jar;C:\Users\willi\.m2\repository\io\netty\netty-codec-http\4.1.67.Final\netty-codec-http-4.1.67.Final.jar;C:\Users\willi\.m2\repository\io\netty\netty-codec-http2\4.1.67.Final\netty-codec-http2-4.1.67.Final.jar;C:\Users\willi\.m2\repository\io\netty\netty-resolver\4.1.67.Final\netty-resolver-4.1.67.Final.jar;C:\Users\willi\.m2\repository\io\netty\netty-resolver-dns\4.1.67.Final\netty-resolver-dns-4.1.67.Final.jar;C:\Users\willi\.m2\repository\io\netty\netty-codec-dns\4.1.67.Final\netty-codec-dns-4.1.67.Final.jar;C:\Users\willi\.m2\repository\io\vertx\vertx-config\4.1.4\vertx-config-4.1.4.jar;C:\Users\willi\.m2\repository\org\apache\logging\log4j\log4j-api\2.14.1\log4j-api-2.14.1.jar;C:\Users\willi\.m2\repository\org\apache\logging\log4j\log4j-core\2.14.1\log4j-core-2.14.1.jar;C:\Users\willi\.m2\repository\org\apache\logging\log4j\log4j-slf4j-impl\2.14.1\log4j-slf4j-impl-2.14.1.jar;C:\Users\willi\.m2\repository\org\slf4j\slf4j-api\1.7.25\slf4j-api-1.7.25.jar;C:\Users\willi\.m2\repository\io\vertx\vertx-pg-client\4.1.4\vertx-pg-client-4.1.4.jar;C:\Users\willi\.m2\repository\io\vertx\vertx-sql-client\4.1.4\vertx-sql-client-4.1.4.jar;C:\Users\willi\AppData\Local\JetBrains\Toolbox\apps\IDEA-U\ch-0\212.5284.40\lib\idea_rt.jar io.vertx.core.Launcher run dev.schaw.myapi.MainVerticle
Connected to the target VM, address: '127.0.0.1:53414', transport: 'socket'
OpenJDK 64-Bit Server VM warning: Sharing is only supported for boot loader classes because bootstrap classpath has been appended
16:06:01.100 [vert.x-eventloop-thread-0] INFO io.vertx.core.impl.launcher.commands.VertxIsolatedDeployer - Succeeded in deploying verticle
16:06:03.393 [vert.x-eventloop-thread-1] ERROR io.vertx.core.impl.ContextImpl - Unhandled exception
io.vertx.core.json.EncodeException: Failed to encode as JSON: Java 8 date/time type `java.time.LocalDate` not supported by default: add Module "com.fasterxml.jackson.datatype:jackson-datatype-jsr310" to enable handling (through reference chain: java.util.LinkedHashMap["date"])
at io.vertx.core.json.jackson.DatabindCodec.toString(DatabindCodec.java:163) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.json.JsonObject.encode(JsonObject.java:728) ~[vertx-core-4.1.4.jar:4.1.4]
at dev.schaw.myapi.MainVerticle.lambda$onConfigRetrieved$1(MainVerticle.java:73) ~[classes/:?]
at io.vertx.core.impl.future.FutureImpl$3.onSuccess(FutureImpl.java:141) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.impl.future.FutureBase.emitSuccess(FutureBase.java:60) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.impl.future.FutureImpl.tryComplete(FutureImpl.java:211) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.impl.future.PromiseImpl.tryComplete(PromiseImpl.java:23) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.sqlclient.impl.QueryResultBuilder.tryComplete(QueryResultBuilder.java:102) ~[vertx-sql-client-4.1.4.jar:4.1.4]
at io.vertx.sqlclient.impl.QueryResultBuilder.tryComplete(QueryResultBuilder.java:35) ~[vertx-sql-client-4.1.4.jar:4.1.4]
at io.vertx.core.Promise.complete(Promise.java:66) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.Promise.handle(Promise.java:51) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.Promise.handle(Promise.java:29) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.impl.future.FutureImpl$3.onSuccess(FutureImpl.java:141) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.impl.future.FutureBase.emitSuccess(FutureBase.java:60) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.impl.future.FutureImpl.tryComplete(FutureImpl.java:211) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.impl.future.PromiseImpl.tryComplete(PromiseImpl.java:23) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.impl.future.PromiseImpl.onSuccess(PromiseImpl.java:49) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.impl.future.FutureImpl$ListenerArray.onSuccess(FutureImpl.java:262) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.impl.future.FutureBase.lambda$emitSuccess$0(FutureBase.java:54) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.impl.EventLoopContext.execute(EventLoopContext.java:81) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.impl.DuplicatedContext.execute(DuplicatedContext.java:173) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.impl.future.FutureBase.emitSuccess(FutureBase.java:51) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.impl.future.FutureImpl.tryComplete(FutureImpl.java:211) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.impl.future.PromiseImpl.tryComplete(PromiseImpl.java:23) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.impl.future.PromiseImpl.onSuccess(PromiseImpl.java:49) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.impl.future.PromiseImpl.handle(PromiseImpl.java:41) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.impl.future.PromiseImpl.handle(PromiseImpl.java:23) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.sqlclient.impl.command.CommandResponse.fire(CommandResponse.java:46) ~[vertx-sql-client-4.1.4.jar:4.1.4]
at io.vertx.sqlclient.impl.SocketConnectionBase.handleMessage(SocketConnectionBase.java:287) ~[vertx-sql-client-4.1.4.jar:4.1.4]
at io.vertx.pgclient.impl.PgSocketConnection.handleMessage(PgSocketConnection.java:96) ~[vertx-pg-client-4.1.4.jar:4.1.4]
at io.vertx.sqlclient.impl.SocketConnectionBase.lambda$init$0(SocketConnectionBase.java:99) ~[vertx-sql-client-4.1.4.jar:4.1.4]
at io.vertx.core.net.impl.NetSocketImpl.lambda$new$1(NetSocketImpl.java:97) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.streams.impl.InboundBuffer.handleEvent(InboundBuffer.java:240) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.streams.impl.InboundBuffer.write(InboundBuffer.java:130) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.net.impl.NetSocketImpl.lambda$handleMessage$9(NetSocketImpl.java:390) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.impl.EventLoopContext.emit(EventLoopContext.java:50) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.impl.ContextImpl.emit(ContextImpl.java:274) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.impl.EventLoopContext.emit(EventLoopContext.java:22) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.net.impl.NetSocketImpl.handleMessage(NetSocketImpl.java:389) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.net.impl.ConnectionBase.read(ConnectionBase.java:155) ~[vertx-core-4.1.4.jar:4.1.4]
at io.vertx.core.net.impl.VertxHandler.channelRead(VertxHandler.java:154) ~[vertx-core-4.1.4.jar:4.1.4]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) ~[netty-transport-4.1.67.Final.jar:4.1.67.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) ~[netty-transport-4.1.67.Final.jar:4.1.67.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) ~[netty-transport-4.1.67.Final.jar:4.1.67.Final]
at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:436) ~[netty-transport-4.1.67.Final.jar:4.1.67.Final]
at io.vertx.pgclient.impl.codec.PgEncoder.lambda$write$0(PgEncoder.java:87) ~[vertx-pg-client-4.1.4.jar:4.1.4]
at io.vertx.pgclient.impl.codec.PgCommandCodec.handleReadyForQuery(PgCommandCodec.java:139) [vertx-pg-client-4.1.4.jar:4.1.4]
at io.vertx.pgclient.impl.codec.PgDecoder.decodeReadyForQuery(PgDecoder.java:237) [vertx-pg-client-4.1.4.jar:4.1.4]
at io.vertx.pgclient.impl.codec.PgDecoder.channelRead(PgDecoder.java:96) [vertx-pg-client-4.1.4.jar:4.1.4]
at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:251) [netty-transport-4.1.67.Final.jar:4.1.67.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-transport-4.1.67.Final.jar:4.1.67.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-transport-4.1.67.Final.jar:4.1.67.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [netty-transport-4.1.67.Final.jar:4.1.67.Final]
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) [netty-transport-4.1.67.Final.jar:4.1.67.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-transport-4.1.67.Final.jar:4.1.67.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-transport-4.1.67.Final.jar:4.1.67.Final]
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) [netty-transport-4.1.67.Final.jar:4.1.67.Final]
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166) [netty-transport-4.1.67.Final.jar:4.1.67.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:719) [netty-transport-4.1.67.Final.jar:4.1.67.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:655) [netty-transport-4.1.67.Final.jar:4.1.67.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:581) [netty-transport-4.1.67.Final.jar:4.1.67.Final]
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493) [netty-transport-4.1.67.Final.jar:4.1.67.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:986) [netty-common-4.1.67.Final.jar:4.1.67.Final]
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [netty-common-4.1.67.Final.jar:4.1.67.Final]
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) [netty-common-4.1.67.Final.jar:4.1.67.Final]
at java.lang.Thread.run(Thread.java:831) [?:?]
I found this migration guide which says something about jackson : https://vert-x3.github.io/vertx-4-migration-guide/index.html but it does not help.
I also found this issue on github : https://github.com/vert-x3/vertx-web/issues/1841 albeit i'm not sure it applies to me.
Serializing a date should be a common task so I guess the fault is on me. Does someone have any idea how I can solve this issue ?
CodePudding user response：
Vertx has first class support for JSON you don’t need to import anything extra for that, secondly why you need date ? Just use instant as it is supported.
CodePudding user response：
Behind the scene Vertx uses Jackson's ObjectMapper inside encode() and encodePrettily() methods. What you need to do is register JavaTimeModule with these ObjectMappers.
Add these code snippet to your application's main method.
ObjectMapper mapper = DatabindCodec.mapper();
mapper.registerModule(new JavaTimeModule());
ObjectMapper prettyMapper = DatabindCodec.prettyMapper();
prettyMapper.registerModule(new JavaTimeModule());
This is the complete package for DatabindCodec class: io.vertx.core.json.jackson.DatabindCodec