Spring boot @Transactional does not work when org.springframework.http.converter.HttpMessageConversionException is thrown?

huangapple
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英文:

Spring boot @Transactional does not work when org.springframework.http.converter.HttpMessageConversionException is thrown?

问题

I have a rest controller, it will insert 1 record per request, like:

@Transactional(rollbackFor = Exception.class)
@PostMapping("/create_user")
public Response<Empty> createUser(@RequestBody Request<CreateUserRequest> body) {
    String openId = body.getData().getOpenId();
    String phoneNumber = body.getData().getPhoneNumber();
    weChatMapper.createWechatUser(WechatUser.builder()
            .openId(openId)
            .phoneNumber(phoneNumber)
            .build());
    return Response.of();
}

Then when I call it, throws org.springframework.http.converter.HttpMessageConversionException, seems that something goes wrong when serializing the response. Then I check the database, I find that 1 record has been inserted, not rolling back. Then I add an exception-throwing code before returning, like:

@Transactional(rollbackFor = Exception.class)
@PostMapping("/create_user")
public Response<Empty> createUser(@RequestBody Request<CreateUserRequest> body) {
    String openId = body.getData().getOpenId();
    String phoneNumber = body.getData().getPhoneNumber();
    weChatMapper.createWechatUser(WechatUser.builder()
            .openId(openId)
            .phoneNumber(phoneNumber)
            .build());
    if (true) {
        throw new IllegalArgumentException("my test exception");
    }
    return Response.of();
}

Call again, the record is not inserted, roll back as expected. But why...? It's very strange. How to make it roll back at this kind of situation?

The complete trace:

2023-02-27 18:42:36.100 ERROR 36244 --- [nio-8080-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.http.converter.HttpMessageConversionException: Type definition error: [simple type, class com.digiwin.vssmp_backend.entity.Empty]; nested exception is com.fasterxml.jackson.databind.exc.InvalidDefinitionException: No serializer found for class com.digiwin.vssmp_backend.entity.Empty and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS) (through reference chain: com.digiwin.vssmp_backend.dto.response.Response["data"])] with root cause


com.fasterxml.jackson.databind.exc.InvalidDefinitionException: No serializer found for class com.digiwin.vssmp_backend.entity.Empty and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS) (through reference chain: com.digiwin.vssmp_backend.dto.response.Response["data"])

at com.fasterxml.jackson.databind.exc.InvalidDefinitionException.from(InvalidDefinitionException.java:77) ~[jackson-databind-2.13.4.2.jar:2.13.4.2]

at com.fasterxml.jackson.databind.SerializerProvider.reportBadDefinition(SerializerProvider.java:1300) ~[jackson-databind-2.13.4.2.jar:2.13.4.2]

at com.fasterxml.jackson.databind.DatabindContext.reportBadDefinition(DatabindContext.java:400) ~[jackson-databind-2.13.4.2.jar:2.13.4.2]

at com.fasterxml.jackson.databind.ser.impl.UnknownSerializer.failForEmpty(UnknownSerializer.java:46) ~[jackson-databind-2.13.4.2.jar:2.13.4.2]

at com.fasterxml.jackson.databind.ser.impl.UnknownSerializer.serialize(UnknownSerializer.java:29) ~[jackson-databind-2.13.4.2.jar:2.13.4.2]

at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:728) ~[jackson-databind-2.13.4.2.jar:2.13.4.2]

at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:774) ~[jackson-databind-2.13.4.2.jar:2.13.4.2]

at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:178) ~[jackson-databind-2.13.4.2.jar:2.13.4.2]

at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:480) ~[jackson-databind-2.13.4.2.jar:2.13.4.2]

at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:319) ~[jackson-databind-2.13.4.2.jar:2.13.4.2]

at com.fasterxml.jackson.databind.ObjectWriter$Prefetch.serialize(ObjectWriter.java:1518) ~[jackson-databind-2.13.4.2.jar:2.13.4.2]

at com.fasterxml.jackson.databind.ObjectWriter.writeValue(ObjectWriter.java:1007) ~[jackson-databind-2.13.4.2.jar:2.13.4.2]

at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.writeInternal(AbstractJackson2HttpMessageConverter.java:456) ~[spring-web-5.3.25.jar:5.3.25]

at org.springframework.http.converter.AbstractGenericHttpMessageConverter.write(AbstractGenericHttpMessageConverter.java:104) ~[spring-web-5.3.25.jar:5.3.25]

at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:290) ~[spring-webmvc-5.3.25.jar:5.3.25]

at org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.handleReturnValue(RequestResponseBodyMethodProcessor.java:183) ~[spring-webmvc-5.3.25.jar:5.3.25]

at org.springframework.web.method.support.HandlerMethodReturnValueHandlerComposite.handleReturnValue(HandlerMethodReturnValueHandlerComposite.java:78) ~[spring-web-5.3.25.jar:5.3.25]

at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:135) ~[spring-webmvc-5.3.25.jar:5.3.25]

at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) ~[spring-webmvc-5.3.25.jar:5.3.25]

at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808) ~[spring-webmvc-5.3.25.jar:5.3.25]

at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.3.25.jar:5.3.25]

at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1071) ~[spring-webmvc-5.3.25.jar:5.3.25]

at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:964) ~[spring-webmvc-5.3.25.jar:



英文:

I have a rest controller, it will insert 1 record per request,like:


```lang-java


@Transactional(rollbackFor = Exception.class)

@PostMapping("/create_user")

public Response<Empty> createUser(@RequestBody Request<CreateUserRequest> body) {

String openId = body.getData().getOpenId();

String phoneNumber = body.getData().getPhoneNumber();

weChatMapper.createWechatUser(WechatUser.builder()

.openId(openId)

.phoneNumber(phoneNumber)

.build());

return Response.of();

}

```


Then when i call it , throws ```org.springframework.http.converter.HttpMessageConversionException```, seems that somthing goes wrong when serializing the response.Then i check database, i find that 1 record has been inserted, not rolling back.

Then i add a exception throwing code before returning, like:

```lang-java

@Transactional(rollbackFor = Exception.class)

@PostMapping("/create_user")

public Response<Empty> createUser(@RequestBody Request<CreateUserRequest> body) {

String openId = body.getData().getOpenId();

String phoneNumber = body.getData().getPhoneNumber();

weChatMapper.createWechatUser(WechatUser.builder()

.openId(openId)

.phoneNumber(phoneNumber)

.build());

if (true) {

throw new IllegalArgumentException("my test exception");

}

return Response.of();

}

```


Call again, the record is not inserted, roll back as expected.But why...? It's very strange.How to make it roll back at this kind of situation?


The complete trace:

<pre>

2023-02-27 18:42:36.100 ERROR 36244 --- [nio-8080-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.http.converter.HttpMessageConversionException: Type definition error: [simple type, class com.digiwin.vssmp_backend.entity.Empty]; nested exception is com.fasterxml.jackson.databind.exc.InvalidDefinitionException: No serializer found for class com.digiwin.vssmp_backend.entity.Empty and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS) (through reference chain: com.digiwin.vssmp_backend.dto.response.Response["data"])] with root cause


com.fasterxml.jackson.databind.exc.InvalidDefinitionException: No serializer found for class com.digiwin.vssmp_backend.entity.Empty and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS) (through reference chain: com.digiwin.vssmp_backend.dto.response.Response["data"])

at com.fasterxml.jackson.databind.exc.InvalidDefinitionException.from(InvalidDefinitionException.java:77) ~[jackson-databind-2.13.4.2.jar:2.13.4.2]

at com.fasterxml.jackson.databind.SerializerProvider.reportBadDefinition(SerializerProvider.java:1300) ~[jackson-databind-2.13.4.2.jar:2.13.4.2]

at com.fasterxml.jackson.databind.DatabindContext.reportBadDefinition(DatabindContext.java:400) ~[jackson-databind-2.13.4.2.jar:2.13.4.2]

at com.fasterxml.jackson.databind.ser.impl.UnknownSerializer.failForEmpty(UnknownSerializer.java:46) ~[jackson-databind-2.13.4.2.jar:2.13.4.2]

at com.fasterxml.jackson.databind.ser.impl.UnknownSerializer.serialize(UnknownSerializer.java:29) ~[jackson-databind-2.13.4.2.jar:2.13.4.2]

at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:728) ~[jackson-databind-2.13.4.2.jar:2.13.4.2]

at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:774) ~[jackson-databind-2.13.4.2.jar:2.13.4.2]

at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:178) ~[jackson-databind-2.13.4.2.jar:2.13.4.2]

at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:480) ~[jackson-databind-2.13.4.2.jar:2.13.4.2]

at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:319) ~[jackson-databind-2.13.4.2.jar:2.13.4.2]

at com.fasterxml.jackson.databind.ObjectWriter$Prefetch.serialize(ObjectWriter.java:1518) ~[jackson-databind-2.13.4.2.jar:2.13.4.2]

at com.fasterxml.jackson.databind.ObjectWriter.writeValue(ObjectWriter.java:1007) ~[jackson-databind-2.13.4.2.jar:2.13.4.2]

at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.writeInternal(AbstractJackson2HttpMessageConverter.java:456) ~[spring-web-5.3.25.jar:5.3.25]

at org.springframework.http.converter.AbstractGenericHttpMessageConverter.write(AbstractGenericHttpMessageConverter.java:104) ~[spring-web-5.3.25.jar:5.3.25]

at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:290) ~[spring-webmvc-5.3.25.jar:5.3.25]

at org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.handleReturnValue(RequestResponseBodyMethodProcessor.java:183) ~[spring-webmvc-5.3.25.jar:5.3.25]

at org.springframework.web.method.support.HandlerMethodReturnValueHandlerComposite.handleReturnValue(HandlerMethodReturnValueHandlerComposite.java:78) ~[spring-web-5.3.25.jar:5.3.25]

at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:135) ~[spring-webmvc-5.3.25.jar:5.3.25]

at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) ~[spring-webmvc-5.3.25.jar:5.3.25]

at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808) ~[spring-webmvc-5.3.25.jar:5.3.25]

at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.3.25.jar:5.3.25]

at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1071) ~[spring-webmvc-5.3.25.jar:5.3.25]

at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:964) ~[spring-webmvc-5.3.25.jar:5.3.25]

at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.25.jar:5.3.25]

at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) ~[spring-webmvc-5.3.25.jar:5.3.25]

at javax.servlet.http.HttpServlet.service(HttpServlet.java:696) ~[tomcat-embed-core-9.0.71.jar:4.0.FR]

at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.25.jar:5.3.25]

at javax.servlet.http.HttpServlet.service(HttpServlet.java:779) ~[tomcat-embed-core-9.0.71.jar:4.0.FR]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.71.jar:9.0.71]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.71.jar:9.0.71]

at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.71.jar:9.0.71]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.71.jar:9.0.71]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.71.jar:9.0.71]

at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.25.jar:5.3.25]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.25.jar:5.3.25]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.71.jar:9.0.71]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.71.jar:9.0.71]

at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.25.jar:5.3.25]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.25.jar:5.3.25]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.71.jar:9.0.71]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.71.jar:9.0.71]

at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.25.jar:5.3.25]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.25.jar:5.3.25]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.71.jar:9.0.71]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.71.jar:9.0.71]

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:177) ~[tomcat-embed-core-9.0.71.jar:9.0.71]

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) [tomcat-embed-core-9.0.71.jar:9.0.71]

at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) [tomcat-embed-core-9.0.71.jar:9.0.71]

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135) [tomcat-embed-core-9.0.71.jar:9.0.71]

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.71.jar:9.0.71]

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) [tomcat-embed-core-9.0.71.jar:9.0.71]

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360) [tomcat-embed-core-9.0.71.jar:9.0.71]

at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399) [tomcat-embed-core-9.0.71.jar:9.0.71]

at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) [tomcat-embed-core-9.0.71.jar:9.0.71]

at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:891) [tomcat-embed-core-9.0.71.jar:9.0.71]

at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1784) [tomcat-embed-core-9.0.71.jar:9.0.71]

at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.71.jar:9.0.71]

at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) [tomcat-embed-core-9.0.71.jar:9.0.71]

at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) [tomcat-embed-core-9.0.71.jar:9.0.71]

at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.71.jar:9.0.71]

at java.lang.Thread.run(Thread.java:750) [na:1.8.0_332]


</pre>




# 答案1

**得分**: 2


`HttpMessageConversionException` 发生在您的控制器方法之外（在 Spring MVC 的内部，但在处理程序方法之后），因为您的方法返回的任何内容都无法序列化为请求的表单。因此，事务被启动、提交，然后抛出异常。


当您“手动”抛出异常时，它是在方法内部执行的，从而导致事务按预期被回滚。



英文:

`HttpMessageConversionException` happens outside of your controller method (inside spring MVC guts but after handler method) as whatever your method returns, cannot be serialized to a requested form. Therfore, transaction is started, commited and then exception is thrown.


When you throw exception "manually" it is done from withing the method causing TX to be rolled back as expected. 




# 答案2

**得分**: 1


事务没有回滚，因为 *createUser()* 成功执行，异常是在后来当 Jackson 尝试将响应序列化为 JSON 时抛出的。您可以通过创建一个单元测试，直接从控制器调用 *createUser* 方法来双重检查这一点，不使用 web 层。


异常抛出是因为您的响应没有暴露任何数据（或者它不包含任何数据）。例如，如果您运行这个简单的单元测试，将会得到相同的异常：


```java

@Test

void test() throws Exception {

var bean = new MyObject(123);

var mapper = new ObjectMapper();

// 会抛出相同的异常

System.out.println(mapper.writeValueAsString(bean));

}


class MyObject {

private int value;


    public MyObject(int value) {

this.value = value;

}

}

```


但是，如果您向 MyObject 类添加一个 getter 并重新运行测试，这次它将通过。



英文:

The transaction is not rolled back because *createUser()* is executed successfully and the exception is thrown later when Jackson tries to serialize your Response to json. You can double-check this by creating a unit-test and directly call the *createUser* method from the controller, without the web layer.


The exception is thrown because your Response does not expose any data (or it does not contain any). For instance, if you run this simple unit test you will get the same exception:


    @Test

void test() throws Exception {

var bean = new MyObject(123);

var mapper = new ObjectMapper();

// will throw the same exception

System.out.println(mapper.writeValueAsString(bean));

}


	class MyObject {

private int value;


		public MyObject(int value) {

this.value = value;

}

}


Though, if you add a getter to the MyObject class and re-run the test, this time it will pass.
huangapple
  • 本文由 发表于 2023年2月27日 18:57:44
  • 转载请务必保留本文链接：https://go.coder-hub.com/75579569.html
  • java
  • mybatis
  • spring
  • spring-boot
  • spring-mybatis
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