我使用的是SpringBoot数据、Redis和绝地。我在一个配置类中创建了jedisconnectionfactory和redistemplate bean。应用程序启动期间，jedisconnectionfactory bean实例化失败。
我用最新的图书馆。这是我得到的例外：
[ERROR] Failed to execute goal org.springframework.boot:spring-boot-
maven-plugin:2.2.0.BUILD-SNAPSHOT:run (default-cli) on project
Console: An exception occurred while running. null:
InvocationTargetException: Error creating bean with name
'consoleApplication': Unsatisfied dependency expressed through field
'bookRepository'; nested exception is
org.springframework.beans.factory.BeanCreationException: Error
creating bean with name 'bookRepository': Cannot resolve reference
to bean 'redisKeyValueTemplate' while setting bean property
'keyValueOperations'; nested exception is
org.springframework.beans.factory.BeanCreationException: Error
creating bean with name 'redisKeyValueTemplate': Cannot resolve
reference to bean 'redisKeyValueAdapter' while setting constructor
argument; nested exception is
org.springframework.beans.factory.BeanCreationException: Error
creating bean with name 'redisKeyValueAdapter': Cannot resolve
reference to bean 'redisTemplate' while setting constructor
argument; nested exception is
org.springframework.beans.factory.BeanCreationException: Error
creating bean with name 'redisTemplate' defined in class path
resource [com/console/config/AppConfig.class]: Bean instantiation
via factory method failed; nested exception is
org.springframework.beans.BeanInstantiationException: Failed to
instantiate [org.springframework.data.redis.core.RedisTemplate]:
Factory method 'redisTemplate' threw exception; nested exception is
org.springframework.beans.factory.BeanCreationException: Error
creating bean with name 'jedisConnectionFactory' defined in class
path resource [com/console/config/AppConfig.class]: Bean
instantiation via factory method failed; nested exception is
org.springframework.beans.BeanInstantiationException: Failed to
instantiate [org.springframework.data.redis.connection.jedis.JedisConnectionFactory]: Factory method 'jedisConnectionFactory' threw exception; nested exception is java.lang.NullPointerException -> [Help 1]
这是我的pom.xml：
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.0.BUILD-SNAPSHOT</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-redis</artifactId>
<!-- <version>2.2.0.BUILD-SNAPSHOT</version> -->
</dependency>
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<!-- <version>3.0.1</version> -->
<!-- <type>jar</type> -->
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-pool2</artifactId>
</dependency>
这是我的代码：
@Configuration
public class AppConfig {
@Autowired
private RedisProperties redisProperties;
@Bean
JedisConnectionFactory jedisConnectionFactory() {
RedisStandaloneConfiguration redisStandaloneConfiguration = new RedisStandaloneConfiguration(redisProperties.getHost(), redisProperties.getPort());redisStandaloneConfiguration.setPassword(redisProperties.getPassword());
JedisClientConfiguration.JedisClientConfigurationBuilder builder = JedisClientConfiguration.builder()
.connectTimeout(redisProperties.getTimeout())
.readTimeout(redisProperties.getJedis().getPool().getMaxWait());
if (redisProperties.isSsl())
builder.useSsl();
// Final JedisClientConfiguration
JedisClientConfiguration clientConfig = builder.build();//.usePooling().build();
return new JedisConnectionFactory(redisStandaloneConfiguration, clientConfig);
}
@Bean
public RedisTemplate<Object, Object> redisTemplate() {
RedisTemplate<Object, Object> template = new RedisTemplate<Object, Object>();
JedisConnectionFactory factory = jedisConnectionFactory();
template.setConnectionFactory(jedisConnectionFactory());
return template;
}
}
@Repository
public interface BookRepository extends CrudRepository<Book, Long> {
}
我希望这个简单的应用程序能够毫无例外地运行。
任何建议和见解都是值得赞赏的。
最佳答案
通过查看jedisconnectionfactory代码，似乎只有当ctor的一个参数为空时，您才能得到这样的错误。
public JedisConnectionFactory(RedisStandaloneConfiguration standaloneConfig, JedisClientConfiguration clientConfig) {
this(clientConfig);
Assert.notNull(standaloneConfig, "RedisStandaloneConfiguration must not be null!");
this.standaloneConfig = standaloneConfig;
}