Ошибка обращения к API с помощью Redis – SerializationException ⇐ JAVA

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Anonymous
 Ошибка обращения к API с помощью Redis – SerializationException

Сообщение Anonymous »

В настоящее время я изучаю Redis и использую конечные точки API для хранения и получения данных с использованием типов данных Redis. Когда я нажимаю на конечную точку API (/lrange/person), я получаю следующее сообщение об ошибке

Код: Выделить всё

Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed: org.springframework.data.redis.serializer.SerializationException: Cannot deserialize] with root cause
API, который я пытаюсь использовать (localhost:8080/lrange/person). Этот API можно увидеть в PersonController.java и он находится в списке (тип данных). Я пытаюсь получить все или диапазон значений в зависимости от начальных и конечных параметров в списке и приведения типов к человеку (здесь сущность - можно увидеть в Person.java). API выдает внутреннюю ошибку сервера 500.
Вот полная трассировка стека

Код: Выделить всё

2024-05-10T15:12:33.167-07:00  INFO 23153 --- [demo-spring] [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Completed initialization in 1 ms
2024-05-10T15:12:33.352-07:00 ERROR 23153 --- [demo-spring] [nio-8080-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed: org.springframework.data.redis.serializer.SerializationException: Cannot deserialize] with root cause

java.lang.ClassNotFoundException:  com.example.demospring.Person
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641) ~[na:na]
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188) ~[na:na]
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) ~[na:na]
at java.base/java.lang.Class.forName0(Native Method) ~[na:na]
at java.base/java.lang.Class.forName(Class.java:495) ~[na:na]
at java.base/java.lang.Class.forName(Class.java:474) ~[na:na]
at java.base/java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:802) ~[na:na]
at org.springframework.core.ConfigurableObjectInputStream.resolveClass(ConfigurableObjectInputStream.java:80) ~[spring-core-6.1.6.jar:6.1.6]
at java.base/java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:2059) ~[na:na]
at java.base/java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1925) ~[na:na]
at java.base/java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2248) ~[na:na]
at java.base/java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1760) ~[na:na]
at java.base/java.io.ObjectInputStream.readObject(ObjectInputStream.java:538) ~[na:na]
at java.base/java.io.ObjectInputStream.readObject(ObjectInputStream.java:496) ~[na:na]
at java.base/java.util.ArrayList.readObject(ArrayList.java:899) ~[na:na]
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:578) ~[na:na]
at java.base/java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1101) ~[na:na]
at java.base/java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2442) ~[na:na]
at java.base/java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2280) ~[na:na]
at java.base/java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1760) ~[na:na]
at java.base/java.io.ObjectInputStream.readObject(ObjectInputStream.java:538) ~[na:na]
at java.base/java.io.ObjectInputStream.readObject(ObjectInputStream.java:496) ~[na:na]
at org.springframework.core.serializer.DefaultDeserializer.deserialize(DefaultDeserializer.java:71) ~[spring-core-6.1.6.jar:6.1.6]
at org.springframework.core.serializer.support.DeserializingConverter.convert(DeserializingConverter.java:75) ~[spring-core-6.1.6.jar:6.1.6]
at org.springframework.core.serializer.support.DeserializingConverter.convert(DeserializingConverter.java:37) ~[spring-core-6.1.6.jar:6.1.6]
at org.springframework.data.redis.serializer.JdkSerializationRedisSerializer.deserialize(JdkSerializationRedisSerializer.java:106) ~[spring-data-redis-3.2.5.jar:3.2.5]
at org.springframework.data.redis.serializer.SerializationUtils.deserializeValues(SerializationUtils.java:54) ~[spring-data-redis-3.2.5.jar:3.2.5]
at org.springframework.data.redis.serializer.SerializationUtils.deserialize(SerializationUtils.java:68) ~[spring-data-redis-3.2.5.jar:3.2.5]
at org.springframework.data.redis.core.AbstractOperations.deserializeValues(AbstractOperations.java:286) ~[spring-data-redis-3.2.5.jar:3.2.5]
at org.springframework.data.redis.core.DefaultListOperations.lambda$range$9(DefaultListOperations.java:159) ~[spring-data-redis-3.2.5.jar:3.2.5]
at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:396) ~[spring-data-redis-3.2.5.jar:3.2.5]
at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:363) ~[spring-data-redis-3.2.5.jar:3.2.5]
at org.springframework.data.redis.core.AbstractOperations.execute(AbstractOperations.java:97) ~[spring-data-redis-3.2.5.jar:3.2.5]
at org.springframework.data.redis.core.DefaultListOperations.range(DefaultListOperations.java:159) ~[spring-data-redis-3.2.5.jar:3.2.5]
at com.example.demoredis.PersonController.lrange(PersonController.java:57) ~[classes/:na]
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:578) ~[na:na]
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:255) ~[spring-web-6.1.6.jar:6.1.6]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:188) ~[spring-web-6.1.6.jar:6.1.6]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:118) ~[spring-webmvc-6.1.6.jar:6.1.6]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:926)  ~[spring-webmvc-6.1.6.jar:6.1.6]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:831) ~[spring-webmvc-6.1.6.jar:6.1.6]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-6.1.6.jar:6.1.6]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1089) ~[spring-webmvc-6.1.6.jar:6.1.6]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:979) ~[spring-webmvc-6.1.6.jar:6.1.6]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1014) ~[spring-webmvc-6.1.6.jar:6.1.6]
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:903) ~[spring-webmvc-6.1.6.jar:6.1.6]
at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:564) ~[tomcat-embed-core-10.1.20.jar:6.0]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:885) ~[spring-webmvc-6.1.6.jar:6.1.6]
at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658) ~[tomcat-embed-core-10.1.20.jar:6.0]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:206) ~[tomcat-embed-core-10.1.20.jar:10.1.20]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:150) ~[tomcat-embed-core-10.1.20.jar:10.1.20]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) ~[tomcat-embed-websocket-10.1.20.jar:10.1.20]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:175) ~[tomcat-embed-core-10.1.20.jar:10.1.20]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:150) ~[tomcat-embed-core-10.1.20.jar:10.1.20]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-6.1.6.jar:6.1.6]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.6.jar:6.1.6]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:175) ~[tomcat-embed-core-10.1.20.jar:10.1.20]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:150) ~[tomcat-embed-core-10.1.20.jar:10.1.20]
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-6.1.6.jar:6.1.6]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.6.jar:6.1.6]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:175) ~[tomcat-embed-core-10.1.20.jar:10.1.20]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:150) ~[tomcat-embed-core-10.1.20.jar:10.1.20]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-6.1.6.jar:6.1.6]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.6.jar:6.1.6]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:175) ~[tomcat-embed-core-10.1.20.jar:10.1.20]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:150) ~[tomcat-embed-core-10.1.20.jar:10.1.20]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:167) ~[tomcat-embed-core-10.1.20.jar:10.1.20]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90) ~[tomcat-embed-core-10.1.20.jar:10.1.20]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:482) ~[tomcat-embed-core-10.1.20.jar:10.1.20]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:115) ~[tomcat-embed-core-10.1.20.jar:10.1.20]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93) ~[tomcat-embed-core-10.1.20.jar:10.1.20]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) ~[tomcat-embed-core-10.1.20.jar:10.1.20]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:344) ~[tomcat-embed-core-10.1.20.jar:10.1.20]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:391) ~[tomcat-embed-core-10.1.20.jar:10.1.20]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63) ~[tomcat-embed-core-10.1.20.jar:10.1.20]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:896)  ~[tomcat-embed-core-10.1.20.jar:10.1.20]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1736) ~[tomcat-embed-core-10.1.20.jar:10.1.20]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52) ~[tomcat-embed-core-10.1.20.jar:10.1.20]
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) ~[tomcat-embed-core-10.1.20.jar:10.1.20]
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-10.1.20.jar:10.1.20]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:63) ~[tomcat-embed-core-10.1.20.jar:10.1.20]
at java.base/java.lang.Thread.run(Thread.java:1589) ~[na:na]

Process finished with exit code 130 (interrupted by signal 2:SIGINT)
DemoRedisApplication.java

Код: Выделить всё

package com.example.demoredis;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class DemoRedisApplication {

public static void main(String[] args) {
SpringApplication.run(DemoRedisApplication.class, args);
}

}
Person.java

Код: Выделить всё

package com.example.demoredis;

import lombok.*;

import java.io.Serializable;

@Getter
@Setter
@NoArgsConstructor
@AllArgsConstructor
@Builder
public class Person implements Serializable {

private long id;
private String name;
private int age;
private double creditScore;
}
PersonController.java

Код: Выделить всё

package com.example.demoredis;

import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.stream.Collectors;

@RestController
public class PersonController {
@Autowired
RedisTemplate redisTemplate;

@Autowired
ObjectMapper objectMapper;

private static final String PERSON_KEY_PREFIX = "per::";
private static final String PERSON_LIST_KEY_PREFIX = "per_list";

// ---------------- String ----------------------------------

@GetMapping("/string/person")
public Person getPerson(@RequestParam("id") int id) {
String key = getKey(id);
return (Person) redisTemplate.opsForValue().get(key);
}

@PostMapping("/string/person")
public void insertPerson(@RequestBody Person person) {
String key = getKey(person.getId());
redisTemplate.opsForValue().set(key, person);
}

public String getKey(long id) {
return PERSON_KEY_PREFIX + id;
}

// --------------------- List ---------------------

@GetMapping("/lrange/person")
public List
 lrange(@RequestParam(value = "start", required = false, defaultValue = "0") int start,
@RequestParam(value = "end", required = false, defaultValue = "-1") int end){
return redisTemplate.opsForList()
.range(PERSON_LIST_KEY_PREFIX, start, end)
.stream()
.map(x -> (Person) x)
.collect(Collectors.toList());
}

@PostMapping("/lpush/person")
public void insertListPersonLeft(@RequestBody List personList) {
redisTemplate.opsForList().leftPushAll(PERSON_LIST_KEY_PREFIX, personList);
}

@PostMapping("/rpush/person")
public void insertListPersonRight(@RequestBody List personList) {
redisTemplate.opsForList().rightPushAll(PERSON_LIST_KEY_PREFIX, personList);
}

@DeleteMapping("/lpop/person")
public Person deletePersonLeft(@RequestParam(value = "count", required = false, defaultValue = "1") int count) {
return (Person) redisTemplate.opsForList().leftPop(PERSON_LIST_KEY_PREFIX);
}

@DeleteMapping("/lpoplist/person")
public List  deletePersonLeftList(@RequestParam(value = "count", required = false, defaultValue = "1") int count) {
return redisTemplate.opsForList()
.leftPop(PERSON_LIST_KEY_PREFIX, count)
.stream()
.map(x -> (Person) x)
.collect(Collectors.toList());
}

@DeleteMapping("rpop/person")
public Person deletePersonRight(@RequestParam(value = "count", required = false, defaultValue = "1") int count) {
return (Person) redisTemplate.opsForList().rightPop(PERSON_LIST_KEY_PREFIX);
}

public String getListKey(long id) {
return PERSON_LIST_KEY_PREFIX + id;
}
}
PersonConfig.java

Код: Выделить всё

package com.example.demoredis;

import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisStandaloneConfiguration;
import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.JdkSerializationRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

@Configuration
public class PersonConfig {

@Bean
public LettuceConnectionFactory getConnectionFactory() {
RedisStandaloneConfiguration redisStandaloneConfiguration = new RedisStandaloneConfiguration();
LettuceConnectionFactory lettuceConnectionFactory = new LettuceConnectionFactory(redisStandaloneConfiguration);
return lettuceConnectionFactory;
}

@Bean
public RedisTemplate getTemplate() {
RedisTemplate redisTemplate = new RedisTemplate();
redisTemplate.setConnectionFactory(getConnectionFactory());
redisTemplate.setValueSerializer(new JdkSerializationRedisSerializer());
redisTemplate.setKeySerializer(new StringRedisSerializer());
return redisTemplate;
}

@Bean
public ObjectMapper getMapper() {
return new ObjectMapper();
}
}
pom.xml

Код: Выделить всё

xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
4.0.0

org.springframework.boot
spring-boot-starter-parent
3.2.5
  

com.example
demo-redis
0.0.1-SNAPSHOT
demo-spring
Demo project for Spring Boot

17



org.springframework.boot
spring-boot-starter-data-redis


org.springframework.boot
spring-boot-starter-web



org.projectlombok
lombok
true


org.springframework.boot
spring-boot-starter-test
test






org.springframework.boot
spring-boot-maven-plugin



org.projectlombok
lombok
Спасибо, что нашли время помочь мне.


Подробнее здесь: https://stackoverflow.com/questions/784 ... nexception
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