如何在java中从AWS-SQS读取反序列化对象？
我想从springboot应用程序中读取SNS->SQS消息（如何在java中从AWS-SQS读取反序列化对象？,java,spring-boot,amazon-sqs,Java,Spring Boot,Amazon Sqs,我想从springboot应用程序中读取SNS->SQS消息（{“author”：“Peter Smith”，“error”：“error of test”}），但我不反序列化我的对象。我有一个错误： ERROR 1484 --- [enerContainer-2] o.s.c.a.m.listener.QueueMessageHandler : Unhandled exception from message handler method org.springframework.mess
{“author”：“Peter Smith”，“error”：“error of test”}ERROR 1484 --- [enerContainer-2] o.s.c.a.m.listener.QueueMessageHandler : Unhandled exception from message handler method
org.springframework.messaging.converter.MessageConversionException: Could not read JSON: Cannot construct instance of `com.saltandpepper.event.domain.event.dto.PushEvent` (although at least one Creator exists): no String-argument constructor/factory method to deserialize from String value ('{"author":"Peter Smith","error":"error of test"}')
at [Source: (String)"{
"Type" : "Notification",
"MessageId" : "56639e45-586e-5281-9204-cbeed1890b81",
"TopicArn" : "arn:aws:sns:eu-west-1:xxxxxxxxxxxx:eventNow",
"Message" : "{\"author\":\"Peter Smith\",\"error\":\"error of test\"}",
"Timestamp" : "2019-07-19T09:04:39.109Z",
"SignatureVersion" : "1",
"Signature" : "hnSn2gWYqmnpmgGpqGy8/4V5mTirHEVB5Bmar3AnGayevXMqV+rk8CRbEcyOmoao7krUctnvMwQKubVDQQFKszgQZ7qxdEp7I0cJobiipdwM6z7D4O+pvJJ3pyjxGYQNcNLF1rvFJoTnSW/uUAdvLYv4vuKeNeF11P58dscKF+HCmAnLMEe6EnZNNzeb"[truncated 724 chars]; line: 5, column: 15] (through reference chain: com.orange.newcp.model.SqsMessage["Message"]); nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot construct instance of `com.saltandpepper.event.domain.event.dto.PushEvent` (although at least one Creator exists): no String-argument constructor/factory method to deserialize from String value ('{"author":"Peter Smith","error":"error of test"}')
at [Source: (String)"{
"Type" : "Notification",
"MessageId" : "56639e45-586e-5281-9204-cbeed1890b81",
"TopicArn" : "arn:aws:sns:eu-west-1:xxxxxxxxxxxx:eventNow",
"Message" : "{\"author\":\"Peter Smith\",\"error\":\"error of test\"}",
"Timestamp" : "2019-07-19T09:04:39.109Z",
"SignatureVersion" : "1",
"Signature" : "hnSn2gWYqmnpmgGpqGy8/4V5mTirHEVB5Bmar3AnGayevXMqV+rk8CRbEcyOmoao7krUctnvMwQKubVDQQFKszgQZ7qxdEp7I0cJobiipdwM6z7D4O+pvJJ3pyjxGYQNcNLF1rvFJoTnSW/uUAdvLYv4vuKeNeF11P58dscKF+HCmAnLMEe6EnZNNzeb"[truncated 724 chars]; line: 5, column: 15] (through reference chain: com.orange.newcp.model.SqsMessage["Message"])
at org.springframework.messaging.converter.MappingJackson2MessageConverter.convertFromInternal(MappingJackson2MessageConverter.java:234) ~[spring-messaging-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.messaging.converter.AbstractMessageConverter.fromMessage(AbstractMessageConverter.java:181) ~[spring-messaging-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.messaging.handler.annotation.support.PayloadArgumentResolver.resolveArgument(PayloadArgumentResolver.java:137) ~[spring-messaging-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.messaging.handler.invocation.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:117) ~[spring-messaging-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.messaging.handler.invocation.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:148) ~[spring-messaging-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.messaging.handler.invocation.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:116) ~[spring-messaging-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.messaging.handler.invocation.AbstractMethodMessageHandler.handleMatch(AbstractMethodMessageHandler.java:550) [spring-messaging-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.messaging.handler.invocation.AbstractMethodMessageHandler.handleMessageInternal(AbstractMethodMessageHandler.java:505) [spring-messaging-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.messaging.handler.invocation.AbstractMethodMessageHandler.handleMessage(AbstractMethodMessageHandler.java:439) [spring-messaging-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.cloud.aws.messaging.listener.SimpleMessageListenerContainer.executeMessage(SimpleMessageListenerContainer.java:227) [spring-cloud-aws-messaging-2.1.1.RELEASE.jar:2.1.1.RELEASE]
at org.springframework.cloud.aws.messaging.listener.SimpleMessageListenerContainer$MessageExecutor.run(SimpleMessageListenerContainer.java:417) [spring-cloud-aws-messaging-2.1.1.RELEASE.jar:2.1.1.RELEASE]
at org.springframework.cloud.aws.messaging.listener.SimpleMessageListenerContainer$SignalExecutingRunnable.run(SimpleMessageListenerContainer.java:309) [spring-cloud-aws-messaging-2.1.1.RELEASE.jar:2.1.1.RELEASE]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_201]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_201]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_201]
Caused by: com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot construct instance of `com.saltandpepper.event.domain.event.dto.PushEvent` (although at least one Creator exists): no String-argument constructor/factory method to deserialize from String value ('{"author":"Peter Smith","error":"error of test"}')
at [Source: (String)"{
"Type" : "Notification",
"MessageId" : "56639e45-586e-5281-9204-cbeed1890b81",
"TopicArn" : "arn:aws:sns:eu-west-1:xxxxxxxxxxxx:eventNow",
"Message" : "{\"author\":\"Peter Smith\",\"error\":\"error of test\"}",
"Timestamp" : "2019-07-19T09:04:39.109Z",
"SignatureVersion" : "1",
"Signature" : "hnSn2gWYqmnpmgGpqGy8/4V5mTirHEVB5Bmar3AnGayevXMqV+rk8CRbEcyOmoao7krUctnvMwQKubVDQQFKszgQZ7qxdEp7I0cJobiipdwM6z7D4O+pvJJ3pyjxGYQNcNLF1rvFJoTnSW/uUAdvLYv4vuKeNeF11P58dscKF+HCmAnLMEe6EnZNNzeb"[truncated 724 chars]; line: 5, column: 15] (through reference chain: com.orange.newcp.model.SqsMessage["Message"])
at com.fasterxml.jackson.databind.exc.MismatchedInputException.from(MismatchedInputException.java:63) ~[jackson-databind-2.9.9.jar:2.9.9]
at com.fasterxml.jackson.databind.DeserializationContext.reportInputMismatch(DeserializationContext.java:1343) ~[jackson-databind-2.9.9.jar:2.9.9]
at com.fasterxml.jackson.databind.DeserializationContext.handleMissingInstantiator(DeserializationContext.java:1032) ~[jackson-databind-2.9.9.jar:2.9.9]
at com.fasterxml.jackson.databind.deser.ValueInstantiator._createFromStringFallbacks(ValueInstantiator.java:371) ~[jackson-databind-2.9.9.jar:2.9.9]
at com.fasterxml.jackson.databind.deser.std.StdValueInstantiator.createFromString(StdValueInstantiator.java:323) ~[jackson-databind-2.9.9.jar:2.9.9]
at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeFromString(BeanDeserializerBase.java:1373) ~[jackson-databind-2.9.9.jar:2.9.9]
at com.fasterxml.jackson.databind.deser.BeanDeserializer._deserializeOther(BeanDeserializer.java:171) ~[jackson-databind-2.9.9.jar:2.9.9]
at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:161) ~[jackson-databind-2.9.9.jar:2.9.9]
at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:129) ~[jackson-databind-2.9.9.jar:2.9.9]
at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:369) ~[jackson-databind-2.9.9.jar:2.9.9]
at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:159) ~[jackson-databind-2.9.9.jar:2.9.9]
at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4013) ~[jackson-databind-2.9.9.jar:2.9.9]
at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3042) ~[jackson-databind-2.9.9.jar:2.9.9]
at org.springframework.messaging.converter.MappingJackson2MessageConverter.convertFromInternal(MappingJackson2MessageConverter.java:229) ~[spring-messaging-5.1.8.RELEASE.jar:5.1.8.RELEASE]
... 14 common frames omitted
@SqsListener(QUEUE_NAME)
public void receiveMessage(SqsMessage message, @Header("SenderId") String senderId) {
logger.info("Service A received message: {}", message);
logger.info("Service A received messageId: {}", message.getMessageId());
logger.info("Service A received message: {}", message.getMessage());
logger.info("Service A received author: {}", message.getMessage().getAuthor());
logger.info("Service A senderId: {}", senderId);
}
public class SqsMessage {
@JsonProperty("MessageId")
String messageId;
@JsonProperty("Message")
PushEvent<?> message;
public SqsMessage() {
}
public SqsMessage(String messageId, PushEvent<?> message) {
this.messageId = messageId ;
this.message = message ;
}
public String getMessageId() {
return messageId;
}
public void setMessageId(String messageId) {
this.messageId = messageId;
}
public PushEvent<?> getMessage() {
return message;
}
public void setMessage(PushEvent<?> message) {
this.message = message;
}
}
@Data
@Builder
@AllArgsConstructor
@NoArgsConstructor
@ToString
public class PushEvent<T> {
String author;
// T current;
String error;
}
@Configuration
public class SpringCloudAwsConfig {
@Bean
public QueueMessageHandlerFactory queueMessageHandlerFactory() {
QueueMessageHandlerFactory factory = new QueueMessageHandlerFactory();
MappingJackson2MessageConverter messageConverter = new MappingJackson2MessageConverter();
//set strict content type match to false
messageConverter.setStrictContentTypeMatch(false);
factory.setArgumentResolvers(Collections.<HandlerMethodArgumentResolver>singletonList(new PayloadArgumentResolver(messageConverter)));
List<MessageConverter> mc = new ArrayList<>();
mc.add(new MappingJackson2MessageConverter());
factory.setMessageConverters(mc);
return factory;
}
@Bean
public QueueMessagingTemplate queueMessagingTemplate(AmazonSQSAsync amazonSQSAsync) {
return new QueueMessagingTemplate(amazonSQSAsync);
}
@Bean
public NotificationMessagingTemplate notificationMessagingTemplate(AmazonSNS amazonSNS) {
return new NotificationMessagingTemplate(amazonSNS);
}
}
公共类SQS消息{
@JsonProperty（“MessageId”）
字符串messageId；
@JsonProperty（“消息”）
推送事件消息；
公共SQS消息（）{
}
公共SQS消息（字符串消息ID、PushEvent消息）{
this.messageId=messageId；
this.message=消息；
}
公共字符串getMessageId（）{
返回messageId；
}
public void setMessageId（字符串messageId）{
this.messageId=messageId；
}
public PushEvent getMessage（）{
返回消息；
}
公共无效设置消息（PushEvent消息）{
this.message=消息；
}
}
public class SqsMessage {
@JsonProperty("MessageId")
String messageId;
@JsonProperty("Message")
PushEvent<?> message;
public SqsMessage() {
}
public SqsMessage(String messageId, PushEvent<?> message) {
this.messageId = messageId ;
this.message = message ;
}
public String getMessageId() {
return messageId;
}
public void setMessageId(String messageId) {
this.messageId = messageId;
}
public PushEvent<?> getMessage() {
return message;
}
public void setMessage(PushEvent<?> message) {
this.message = message;
}
}
@Data
@Builder
@AllArgsConstructor
@NoArgsConstructor
@ToString
public class PushEvent<T> {
String author;
// T current;
String error;
}
@Configuration
public class SpringCloudAwsConfig {
@Bean
public QueueMessageHandlerFactory queueMessageHandlerFactory() {
QueueMessageHandlerFactory factory = new QueueMessageHandlerFactory();
MappingJackson2MessageConverter messageConverter = new MappingJackson2MessageConverter();
//set strict content type match to false
messageConverter.setStrictContentTypeMatch(false);
factory.setArgumentResolvers(Collections.<HandlerMethodArgumentResolver>singletonList(new PayloadArgumentResolver(messageConverter)));
List<MessageConverter> mc = new ArrayList<>();
mc.add(new MappingJackson2MessageConverter());
factory.setMessageConverters(mc);
return factory;
}
@Bean
public QueueMessagingTemplate queueMessagingTemplate(AmazonSQSAsync amazonSQSAsync) {
return new QueueMessagingTemplate(amazonSQSAsync);
}
@Bean
public NotificationMessagingTemplate notificationMessagingTemplate(AmazonSNS amazonSNS) {
return new NotificationMessagingTemplate(amazonSNS);
}
}
@数据
@建筑商
@AllArgsConstructor
@诺尔格构装师
@托斯特林
公开课推送活动{
字符串作者；
//T电流；
字符串错误；
}
public class SqsMessage {
@JsonProperty("MessageId")
String messageId;
@JsonProperty("Message")
PushEvent<?> message;
public SqsMessage() {
}
public SqsMessage(String messageId, PushEvent<?> message) {
this.messageId = messageId ;
this.message = message ;
}
public String getMessageId() {
return messageId;
}
public void setMessageId(String messageId) {
this.messageId = messageId;
}
public PushEvent<?> getMessage() {
return message;
}
public void setMessage(PushEvent<?> message) {
this.message = message;
}
}
@Data
@Builder
@AllArgsConstructor
@NoArgsConstructor
@ToString
public class PushEvent<T> {
String author;
// T current;
String error;
}
@Configuration
public class SpringCloudAwsConfig {
@Bean
public QueueMessageHandlerFactory queueMessageHandlerFactory() {
QueueMessageHandlerFactory factory = new QueueMessageHandlerFactory();
MappingJackson2MessageConverter messageConverter = new MappingJackson2MessageConverter();
//set strict content type match to false
messageConverter.setStrictContentTypeMatch(false);
factory.setArgumentResolvers(Collections.<HandlerMethodArgumentResolver>singletonList(new PayloadArgumentResolver(messageConverter)));
List<MessageConverter> mc = new ArrayList<>();
mc.add(new MappingJackson2MessageConverter());
factory.setMessageConverters(mc);
return factory;
}
@Bean
public QueueMessagingTemplate queueMessagingTemplate(AmazonSQSAsync amazonSQSAsync) {
return new QueueMessagingTemplate(amazonSQSAsync);
}
@Bean
public NotificationMessagingTemplate notificationMessagingTemplate(AmazonSNS amazonSNS) {
return new NotificationMessagingTemplate(amazonSNS);
}
}
@配置
公共类SpringCloudAwsConfig{
@豆子
public QueueMessageHandlerFactory QueueMessageHandlerFactory（）{
QueueMessageHandlerFactory=新的QueueMessageHandlerFactory（）；
MappingJackson2MessageConverter messageConverter=新的MappingJackson2MessageConverter（）；
//将严格内容类型匹配设置为false
messageConverter.setStrictContentTypeMatch（false）；
setArgumentResolver（Collections.singletonList（新的PayloadArgumentResolver（messageConverter）））；
List mc=new ArrayList（）；
mc.add（新映射Jackson2MessageConverter（））；
工厂设置信息转换器（mc）；
返回工厂；
}
@豆子
公用队列MessagingTemplate队列MessagingTemplate（AmazonSQSAsync AmazonSQSAsync）{
返回新的QueueMessagingTemplate（amazonSQSAsync）；
}
@豆子
公共通知MessagingTemplate通知MessagingTemplate（AmazonSNS AmazonSNS）{
返回新的NotificationMessagingTemplate（amazonSNS）；
}
}
SimpleModule module = new SimpleModule();
module.addDeserializer(Rate.class, new RateDeserializer());
SimpleModule module2 = new SimpleModule();
module2.addDeserializer(Maturity.class, new MaturityDeserializer());
ObjectMapper mapper = new ObjectMapper().registerModule(new JavaTimeModule()).registerModule(module).registerModule(module2);
mapper.setDateFormat(new StdDateFormat());
PushEventMessage<PushEvent<Offer>> pushEventMessage = mapper.readValue(message.getMessage(), PushEventMessage.class);
PushEventMessage PushEventMessage=mapper.readValue（message.getMessage（），PushEventMessage.class）；
public class RateDeserializer extends StdDeserializer<Rate> {
static final String VALUE_NODE_NAME = "value";
static final String RATESUBTYPE_NODE_NAME = "rateSubType";
public RateDeserializer() {
super(Rate.class);
}
@Override
public Rate deserialize(final JsonParser jsonParser, final DeserializationContext deserializationContext) throws IOException {
...
}
}
public类RateDeserializer扩展StdDeserializer{
静态最终字符串值\u节点\u NAME=“VALUE”；
静态最终字符串RATESUBTYPE\u NODE\u NAME=“RATESUBTYPE”；
公共费率反序列化程序（）{
超级（等级）；
}
@凌驾
公共速率反序列化（final JsonParser JsonParser，final DeserializationContext DeserializationContext）引发IOException{
...
}
}
SimpleModule module = new SimpleModule();
module.addDeserializer(Rate.class, new RateDeserializer());
SimpleModule module2 = new SimpleModule();
module2.addDeserializer(Maturity.class, new MaturityDeserializer());
ObjectMapper mapper = new ObjectMapper().registerModule(new JavaTimeModule()).registerModule(module).registerModule(module2);
mapper.setDateFormat(new StdDateFormat());
PushEventMessage<PushEvent<Offer>> pushEventMessage = mapper.readValue(message.getMessage(), PushEventMessage.class);
PushEventMessage PushEventMessage=mapper.readValue（message.getMessage（），PushEventMessage.class）；
public class RateDeserializer extends StdDeserializer<Rate> {
static final String VALUE_NODE_NAME = "value";
static final String RATESUBTYPE_NODE_NAME = "rateSubType";
public RateDeserializer() {
super(Rate.class);
}
@Override
public Rate deserialize(final JsonParser jsonParser, final DeserializationContext deserializationContext) throws IOException {
...
}
}
public类RateDeserializer扩展StdDeserializer{
静态最终字符串值\u节点\u NAME=“VALUE”；
静态最终字符串RATESUBTYPE\u NODE\u NAME=“RATESUBTYPE”；
公共费率反序列化程序（）{
超级（等级）；
}
@凌驾
公共速率反序列化（final JsonParser JsonParser，final DeserializationContext DeserializationContext）引发IOException{
...
}
}
PushEvent@Data@ToStringT current中不是我要的；我知道您以后可能需要添加它，但未解决的泛型可能会导致Jackson问题。如果您从PushEvent
中删除泛型，会发生什么情况？（另外，@Data
包括@ToString
）我需要使用PushEvent的generic，因为在最终版本T current中不是我要的；我知道您可能需要在以后添加它，但可能是未解决的泛型导致了Jackson问题。