Can not construct instance of com.h.dog.entity.Message: no int/Int-argument constructor/factory meth

org.springframework.data.redis.serializer.SerializationException: Could not read JSON: Can not construct instance of xxx: no int/Int-argument constructor/factory method to deserialize from Number value 异常解决

异常消息
解决办法
主要修改

异常消息

org.springframework.data.redis.serializer.SerializationException: Could not read JSON: Can not construct instance of com.h.dog.entity.Message: no int/Int-argument constructor/factory method to deserialize from Number value (133)at [Source: [B@1f370472; line: 1, column: 1]; nested exception is com.fasterxml.jackson.databind.JsonMappingException: Can not construct instance of com.h.dog.entity.Message: no int/Int-argument constructor/factory method to deserialize from Number value (133)at [Source: [B@1f370472; line: 1, column: 1]
at org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer.deserialize(Jackson2JsonRedisSerializer.java:73)
at org.springframework.data.redis.core.AbstractOperations.deserializeHashKey(AbstractOperations.java:330)
at org.springframework.data.redis.core.AbstractOperations.deserializeHashMap(AbstractOperations.java:282)
at org.springframework.data.redis.core.DefaultHashOperations.entries(DefaultHashOperations.java:227)
at com.h.dog.DogApplicationTests.Test3(DogApplicationTests.java:132)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:252)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

解决办法

在你的自定义序列化器中修改

 @Configurationpublic class RedisConfig  {@Beanpublic RedisTemplate<Object, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {// 1.创建 redisTemplate 模版RedisTemplate<Object, Object> template = new RedisTemplate<>();// 2.关联 redisConnectionFactorytemplate.setConnectionFactory(redisConnectionFactory);// 3.创建 序列化类Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Message.class);Jackson2JsonRedisSerializer jaHashKey = new Jackson2JsonRedisSerializer(Integer.class);template.setDefaultSerializer(jackson2JsonRedisSerializer);template.setHashKeySerializer(jaHashKey);return template;}
}

主要修改

Integer.class报什么类型错就可以改这里例如Can no String/String–argument constructor/factory method to deserialize from Number value 就改成String.class

Jackson2JsonRedisSerializer jaHashKey = new Jackson2JsonRedisSerializer(Integer.class);template.setHashKeySerializer(jaHashKey);//这里改成setxxxxSerializer根据实质来修改

为了这个错误找了好几天现在分享给大家我也是刚学如果有地方说错请各位包涵

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Can not construct instance of com.h.dog.entity.Message: no int/Int-argument constructor/factory meth

org.springframework.data.redis.serializer.SerializationException: Could not read JSON: Can not construct instance of xxx: no int/Int-argument constructor/factory method to deserialize from Number value 异常解决

异常消息

解决办法

主要修改

Can not construct instance of com.h.dog.entity.Message: no int/Int-argument constructor/factory meth相关推荐

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