Open relucant1 opened 5 years ago
relucant1
commented
5 years ago 
i can run the SimpleREST's main method ,but when i call /products in chrome ,the api return "Internal Server Error" with http code 500 and show nothing in my ide console.please tell me some.thanks
tsegismont
commented
5 years ago I can't reproduce. Do you have anything in the server logs?
relucant1
commented
5 years ago I can't reproduce. Do you have anything in the server logs?
nothing in server logs. i thought the server maybe not receive the request. but the httpcode is 500. it's so strange .i thought maybe there is something wrong in the request header.i'm trying to make the server
available. appreciate any suggest very much.
tsegismont
commented
5 years ago Weird. Can you add this to the router definition and try again:
router.errorHandler(500, rc -> {
System.err.println("Handling failure");
Throwable failure = rc.failure();
if (failure != null) {
failure.printStackTrace();
}
});
onemsg
commented
4 years ago The reson is
java.lang.NoSuchMethodError: com.fasterxml.jackson.core.JsonGenerator.writeStartObject(Ljava/lang/Object;)V
at com.fasterxml.jackson.databind.ser.std.MapSerializer.serialize(MapSerializer.java:630)
at com.fasterxml.jackson.databind.ser.std.MapSerializer.serialize(MapSerializer.java:33)
at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:480)
at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:319)
at com.fasterxml.jackson.databind.ObjectMapper.writeValue(ObjectMapper.java:2656)
at com.fasterxml.jackson.core.base.GeneratorBase.writeObject(GeneratorBase.java:355)
at io.vertx.core.json.JsonObjectSerializer.serialize(JsonObjectSerializer.java:22)
at io.vertx.core.json.JsonObjectSerializer.serialize(JsonObjectSerializer.java:19)
at com.fasterxml.jackson.databind.ser.impl.IndexedListSerializer.serializeContents(IndexedListSerializer.java:119)
at com.fasterxml.jackson.databind.ser.impl.IndexedListSerializer.serialize(IndexedListSerializer.java:79)
at com.fasterxml.jackson.databind.ser.impl.IndexedListSerializer.serialize(IndexedListSerializer.java:18)
at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:480)
at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:319)
at com.fasterxml.jackson.databind.ObjectMapper._configAndWriteValue(ObjectMapper.java:3906)
at com.fasterxml.jackson.databind.ObjectMapper.writeValueAsString(ObjectMapper.java:3220)
at io.vertx.core.json.jackson.JacksonCodec.toString(JacksonCodec.java:152)
at io.vertx.core.json.JsonArray.encodePrettily(JsonArray.java:759)
at web.Server.handleListProducts(Server.java:78)
at io.vertx.ext.web.impl.RouteState.handleContext(RouteState.java:1034)
at io.vertx.ext.web.impl.RoutingContextImplBase.iterateNext(RoutingContextImplBase.java:131)
at io.vertx.ext.web.impl.RoutingContextImpl.next(RoutingContextImpl.java:130)
at io.vertx.ext.web.impl.RouterImpl.handle(RouterImpl.java:54)
at io.vertx.ext.web.impl.RouterImpl.handle(RouterImpl.java:36)
at io.vertx.core.http.impl.WebSocketRequestHandler.handle(WebSocketRequestHandler.java:50)
at io.vertx.core.http.impl.WebSocketRequestHandler.handle(WebSocketRequestHandler.java:32)
at io.vertx.core.http.impl.Http1xServerConnection.handleMessage(Http1xServerConnection.java:136)
at io.vertx.core.impl.ContextImpl.executeTask(ContextImpl.java:369)
at io.vertx.core.impl.EventLoopContext.execute(EventLoopContext.java:43)
at io.vertx.core.impl.ContextImpl.executeFromIO(ContextImpl.java:232)
at io.vertx.core.net.impl.VertxHandler.channelRead(VertxHandler.java:173)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:374)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:360)
...
...I add this , and it works.
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.10.1</version>
</dependency>