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Add instructions if object is not deserialized into the right type

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Closes gh-3009
This commit is contained in:
Marcus Hert Da Coregio
2024-06-04 15:47:54 -03:00
parent 8862df484b
commit d5daa283f7
2 changed files with 18 additions and 2 deletions
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8
spring-session-docs/modules/ROOT/pages/configuration/jdbc.adoc
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@@ -294,7 +294,7 @@ You can create a new one if you prefer.
You might need to do the same for other objects that are persisted in the session. You might need to do the same for other objects that are persisted in the session.
<4> Add the `JsonSerializer`/`JsonDeserializer` that we created into the `ConversionService`. <4> Add the `JsonSerializer`/`JsonDeserializer` that we created into the `ConversionService`.
Now that we configured how Spring Session JDBC converts our attributes values into `byte[]`, we must customize the query that insert the session attributes. Now that we configured how Spring Session JDBC converts our attributes values into `byte[]`, we must customize the query that inserts and updates the session attributes.
The customization is necessary because Spring Session JDBC sets content as bytes in the SQL statement, however, `bytea` is not compatible with `jsonb`, therefore we need to encode the `bytea` value to text and then convert it to `jsonb`. The customization is necessary because Spring Session JDBC sets content as bytes in the SQL statement, however, `bytea` is not compatible with `jsonb`, therefore we need to encode the `bytea` value to text and then convert it to `jsonb`.
[tabs] [tabs]
@@ -336,6 +336,12 @@ public class SessionConfig {
And that's it, you should now be able to see the session attributes saved as JSON in the database. And that's it, you should now be able to see the session attributes saved as JSON in the database.
There is a https://github.com/spring-projects/spring-session/tree/main/spring-session-samples/spring-session-sample-boot-jdbc-json-attribute[sample available] where you can see the whole implementation and run the tests. There is a https://github.com/spring-projects/spring-session/tree/main/spring-session-samples/spring-session-sample-boot-jdbc-json-attribute[sample available] where you can see the whole implementation and run the tests.
[NOTE]
====
If your https://docs.spring.io/spring-security/reference/servlet/authentication/passwords/user-details.html#page-title[`UserDetails` implementation] extends Spring Security's `org.springframework.security.core.userdetails.User` class, it is important that you register a custom deserializer for it.
Otherwise, Jackson will use the existing `org.springframework.security.jackson2.UserDeserializer` which won't result in the expected `UserDetails` implementation. See https://github.com/spring-projects/spring-session/issues/3009[gh-3009] for more details.
====
[[specifying-datasource]] [[specifying-datasource]]
== Specifying an alternative `DataSource` == Specifying an alternative `DataSource`

12
spring-session-samples/spring-session-sample-boot-jdbc-json-attribute/src/main/java/sample/config/SessionConfig.java
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@@ -26,11 +26,21 @@ public class SessionConfig implements BeanClassLoaderAware {
VALUES (?, ?, encode(?, 'escape')::jsonb) VALUES (?, ?, encode(?, 'escape')::jsonb)
"""; """;
private static final String UPDATE_SESSION_ATTRIBUTE_QUERY = """
UPDATE %TABLE_NAME%_ATTRIBUTES
SET ATTRIBUTE_BYTES = encode(?, 'escape')::jsonb
WHERE SESSION_PRIMARY_ID = ?
AND ATTRIBUTE_NAME = ?
""";
private ClassLoader classLoader; private ClassLoader classLoader;
@Bean @Bean
SessionRepositoryCustomizer<JdbcIndexedSessionRepository> customizer() { SessionRepositoryCustomizer<JdbcIndexedSessionRepository> customizer() {
return (sessionRepository) -> sessionRepository.setCreateSessionAttributeQuery(CREATE_SESSION_ATTRIBUTE_QUERY); return (sessionRepository) -> {
sessionRepository.setCreateSessionAttributeQuery(CREATE_SESSION_ATTRIBUTE_QUERY);
sessionRepository.setUpdateSessionAttributeQuery(UPDATE_SESSION_ATTRIBUTE_QUERY);
};
} }
@Bean("springSessionConversionService") @Bean("springSessionConversionService")