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Unable to start spring-boot application after configuring spring-session-data-redis

After configuring spring-session-data-redis in a demo spring-boot project, bootRun task fails with the following message:

spring-session-data-redis

bootRun

***************************
APPLICATION FAILED TO START
***************************

Description:

Parameter 0 of method redisTemplate in org.springframework.boot.autoconfigure.data.redis.RedisAutoConfiguration required a bean of type 'org.springframework.data.redis.connection.RedisConnectionFactory' that could not be found.
- Bean method 'redisConnectionFactory' not loaded because @ConditionalOnClass did not find required classes 'org.apache.commons.pool2.impl.GenericObjectPool', 'redis.clients.jedis.Jedis'
- Bean method 'redisConnectionFactory' not loaded because @ConditionalOnClass did not find required class 'io.lettuce.core.RedisClient'

Action:

Consider revisiting the entries above or defining a bean of type 'org.springframework.data.redis.connection.RedisConnectionFactory' in your configuration.


What I've done (a.k.a. steps to reproduce):

1. Used Spring Initializr to create a [Gradle with Java and Spring Boot 2.1.0 M1 + Web dependency] project.

2. Followed the Spring Session - Spring Boot instructions to configure Spring Session. More specifically:

- added compile 'org.springframework.session:spring-session-data-redis'
to build.gradle's dependencies block

- configured the store type by adding spring.session.store-type=redis to application.properties file

- configured the connection
properties (in application.properties file): spring.redis.host,
spring.redis.password and spring.redis.port with relevant values

3. Executed ./gradlew bootRun from the root of the project and received the above error

compile 'org.springframework.session:spring-session-data-redis'

spring.session.store-type=redis

application.properties

application.properties

spring.redis.host

spring.redis.password

spring.redis.port

./gradlew bootRun

Questions:

1. As far as I'm understand from the error message, RedisConnectionFactory failed to load because it can't find neither Jedis nor Lettuce drivers. Shouldn't spring-session-data-redis bring one of those drivers by default?

2. How to resolve this issue in case I want to use the Jedis driver?

3. How to resolve this issue in case I want to use the Lettuce driver?

RedisConnectionFactory

spring-session-data-redis

spring-boot-starter-data-redis

spring-boot-starter-data-redis

bootRun

1.5.16.BUILD-SNAPSHOT

spring-boot-starter-data-redis

io.lettuce:lettuce-core

1 Answer
1

1.

As @M.Deinum mentioned, spring-session-data-redis (version 2.1.0.M1) doesn't pull Jedis or Lettuce drivers.

spring-session-data-redis

2.

Add the latest Jedis driver as explicit dependency:

dependencies
// ...
compile 'redis.clients:jedis:2.9.0'



3.

Either add spring-boot-starter-data-redis (which pulls in Lettuce driver) or the latest Lettuce driver as explicit dependency:

spring-boot-starter-data-redis

dependencies
// ...
compile 'org.springframework.boot:spring-boot-starter-data-redis'
// OR
compile 'io.lettuce:lettuce-core:5.0.5.RELEASE'



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