【发布时间】：2019-11-25 17:26:58
【问题描述】：
所以我一直在关注这个拉取请求，将 redis 集成到 jhipster 生成器中：https://github.com/jhipster/generator-jhipster/pull/10057/commits/cd2f2865d35dfd77624dd3a38ed32822e895539d
这是我的配置：
ApplicationProperties.java：
package com.xxx.xxx.config;
import org.springframework.boot.context.properties.ConfigurationProperties;
import io.github.jhipster.config.JHipsterDefaults;
/**
* <p>
* Properties are configured in the {@code application.yml} file.
* See {@link io.github.jhipster.config.JHipsterProperties} for a good example.
*/
@ConfigurationProperties(prefix = "application", ignoreUnknownFields = false)
public class ApplicationProperties {
private final Redis redis = new Redis();
public Redis getRedis() {
return redis;
}
public static class Redis {
private String server = JHipsterDefaults.Cache.Redis.server;
private int expiration = JHipsterDefaults.Cache.Redis.expiration;
public String getServer() {
return server;
}
public void setServer(String server) {
this.server = server;
}
public int getExpiration() {
return expiration;
}
public void setExpiration(int expiration) {
this.expiration = expiration;
}
}
}
CacheConfiguration.java.ejs：
<%_ if (cacheProvider === 'redis') { _%>
private final javax.cache.configuration.Configuration<Object, Object> jcacheConfiguration;
public CacheConfiguration(JHipsterProperties jHipsterProperties, ApplicationProperties applicationProperties) {
MutableConfiguration<Object, Object> jcacheConfig = new MutableConfiguration<>();
Config config = new Config();
config.useSingleServer()
.setAddress(applicationProperties.getRedis().getServer())
.setSubscriptionConnectionMinimumIdleSize(1)
.setSubscriptionConnectionPoolSize(50)
.setConnectionMinimumIdleSize(24)
.setConnectionPoolSize(64)
.setDnsMonitoringInterval(5000)
.setIdleConnectionTimeout(10000)
.setConnectTimeout(10000)
.setTimeout(3000)
.setRetryAttempts(3)
.setRetryInterval(1500)
.setDatabase(0)
.setPassword(null)
.setSubscriptionsPerConnection(5)
.setClientName(null)
.setSslEnableEndpointIdentification(true)
.setSslProvider(SslProvider.JDK)
.setSslTruststore(null)
.setSslTruststorePassword(null)
.setSslKeystore(null)
.setSslKeystorePassword(null)
.setPingConnectionInterval(0)
.setKeepAlive(false)
.setTcpNoDelay(false);
jcacheConfig.setStatisticsEnabled(true);
jcacheConfig.setExpiryPolicyFactory(CreatedExpiryPolicy.factoryOf(new Duration(TimeUnit.SECONDS, applicationProperties.getRedis().getExpiration())));
jcacheConfiguration = RedissonConfiguration.fromInstance(Redisson.create(config), jcacheConfig);
}
<%_ if (enableHibernateCache) { _%>
@Bean
public HibernatePropertiesCustomizer hibernatePropertiesCustomizer(javax.cache.CacheManager cm) {
return hibernateProperties -> hibernateProperties.put(ConfigSettings.CACHE_MANAGER, cm);
}
<%_ } _%>
@Bean
public JCacheManagerCustomizer cacheManagerCustomizer() {
return cm -> {
<%_ if (!skipUserManagement || (authenticationType === 'oauth2' && databaseType !== 'no')) { _%>
createCache(cm, <%=packageName%>.repository<% if (reactive) { %>.reactive<% } %>.UserRepository.USERS_BY_LOGIN_CACHE);
createCache(cm, <%=packageName%>.repository<% if (reactive) { %>.reactive<% } %>.UserRepository.USERS_BY_EMAIL_CACHE);
<%_ if (enableHibernateCache) { _%>
createCache(cm, <%=packageName%>.domain.<%= asEntity('User') %>.class.getName());
createCache(cm, <%=packageName%>.domain.Authority.class.getName());
createCache(cm, <%=packageName%>.domain.<%= asEntity('User') %>.class.getName() + ".authorities");
<%_ if (authenticationType === 'session') { _%>
createCache(cm, <%=packageName%>.domain.PersistentToken.class.getName());
createCache(cm, <%=packageName%>.domain.<%= asEntity('User') %>.class.getName() + ".persistentTokens");
<%_ } _%>
<%_ } _%>
<%_ } _%>
// jhipster-needle-redis-add-entry
};
}
private void createCache(javax.cache.CacheManager cm, String cacheName) {
javax.cache.Cache<Object, Object> cache = cm.getCache(cacheName);
if (cache != null) {
cm.destroyCache(cacheName);
}
cm.createCache(cacheName, jcacheConfiguration);
}
<%_ } _%>
application.yml:
# ===================================================================
# Application specific properties
# Add your own application properties here, see the ApplicationProperties class
# to have type-safe configuration, like in the JHipsterProperties above
#
# More documentation is available at:
# https://www.jhipster.tech/common-application-properties/
# ===================================================================
application:
application.redis.server: redis://localhost:6379
application.redis.expiration: 300
我的最后一个问题是在 ApplicationProperties.java 中，具体来说：
private String server = JHipsterDefaults.Cache.Redis.server;
private int expiration = JHipsterDefaults.Cache.Redis.expiration;
其中指出：Redis 无法解析或不是 fieldJava：
[ERROR] symbol: variable Redis
[ERROR] location: interface io.github.jhipster.config.JHipsterDefaults.Cache
更新：无效字段已解决--解决方案：
private String server = "redis://localhost:6379";
private int expiration = 300;
立即发布（元素 [] 未绑定）：
***************************
APPLICATION FAILED TO START
***************************
Description:
Binding to target [Bindable@77574136 type = io.github.jhipster.config.JHipsterProperties, value = 'provided', annotations = array<Annotation>[@org.springframework.boot.context.properties.ConfigurationProperties(value=jhipster, prefix=jhipster, ignoreInvalidFields=false, ignoreUnknownFields=false)]] failed:
Property: jhipster.cache.redis.expiration
Value: 3600
Origin: class path resource [config/application-dev.yml]:101:19
Reason: The elements [jhipster.cache.redis.expiration] were left unbound.
Action:
Update your application's configuration
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 13.591 s
更新：元素[]未绑定已解决--解决方案：
application:
redis: # Redis configuration
expiration: 300 # time
jhipster:
# CORS is disabled by default on microservices, as you should access them through a gateway.
# If you want to enable it, please uncomment the configuration below.
# cors:
# allowed-origins: "*"
# allowed-methods: "*"
# allowed-headers: "*"
# exposed-headers: "Authorization,Link,X-Total-Count"
# allow-credentials: true
# max-age: 1800
mail: # specific JHipster mail property, for standard properties see MailProperties
from: appname@localhost
base-url: http://127.0.0.1:8081
metrics:
logs: # Reports metrics in the logs
enabled: false
report-frequency: 60 # in seconds
logging:
use-json-format: false # By default, logs are not in Json format
logstash: # Forward logs to logstash over a socket, used by LoggingConfiguration
enabled: false
host: localhost
port: 5000
queue-size: 512
# ===================================================================
# Application specific properties
# Add your own application properties here, see the ApplicationProperties class
# to have type-safe configuration, like in the JHipsterProperties above
#
# More documentation is available at:
# https://www.jhipster.tech/common-application-properties/
# ===================================================================
application:
redis:
expiration: 300
更详细的 StackTrace：
2019-07-17 10:58:35.205 ERROR 87330 --- [ restartedMain] o.s.boot.SpringApplication : Application run failed
org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is java.lang.RuntimeException: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'servletEndpointRegistrar' defined in class path resource [org/springframework/boot/actuate/autoconfigure/endpoint/web/ServletEndpointManagementContextConfiguration$WebMvcServletEndpointManagementContextConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.actuate.endpoint.web.ServletEndpointRegistrar]: Factory method 'servletEndpointRegistrar' threw exception; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'cachesEndpoint' defined in class path resource [org/springframework/boot/actuate/autoconfigure/cache/CachesEndpointAutoConfiguration.class]: Unsatisfied dependency expressed through method 'cachesEndpoint' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'cacheManager' defined in class path resource [org/springframework/boot/autoconfigure/cache/JCacheCacheConfiguration.class]: Unsatisfied dependency expressed through method 'cacheManager' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jCacheCacheManager' defined in class path resource [org/springframework/boot/autoconfigure/cache/JCacheCacheConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.cache.CacheManager]: Factory method 'jCacheCacheManager' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cacheConfiguration' defined in file [../config/CacheConfiguration.class]: Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.package.project.config.CacheConfiguration$$EnhancerBySpringCGLIB$$2ce84f38]: Constructor threw exception; nested exception is org.redisson.client.RedisConnectionException: Unable to connect to Redis server: localhost/127.0.0.1:6379
Caused by: java.lang.RuntimeException: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'servletEndpointRegistrar' defined in class path resource [org/springframework/boot/actuate/autoconfigure/endpoint/web/ServletEndpointManagementContextConfiguration$WebMvcServletEndpointManagementContextConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.actuate.endpoint.web.ServletEndpointRegistrar]: Factory method 'servletEndpointRegistrar' threw exception; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'cachesEndpoint' defined in class path resource [org/springframework/boot/actuate/autoconfigure/cache/CachesEndpointAutoConfiguration.class]: Unsatisfied dependency expressed through method 'cachesEndpoint' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'cacheManager' defined in class path resource [org/springframework/boot/autoconfigure/cache/JCacheCacheConfiguration.class]: Unsatisfied dependency expressed through method 'cacheManager' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jCacheCacheManager' defined in class path resource [org/springframework/boot/autoconfigure/cache/JCacheCacheConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.cache.CacheManager]: Factory method 'jCacheCacheManager' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cacheConfiguration' defined in file [../config/CacheConfiguration.class]: Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.package.project.config.CacheConfiguration$$EnhancerBySpringCGLIB$$2ce84f38]: Constructor threw exception; nested exception is org.redisson.client.RedisConnectionException: Unable to connect to Redis server: localhost/127.0.0.1:6379
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'servletEndpointRegistrar' defined in class path resource [org/springframework/boot/actuate/autoconfigure/endpoint/web/ServletEndpointManagementContextConfiguration$WebMvcServletEndpointManagementContextConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.actuate.endpoint.web.ServletEndpointRegistrar]: Factory method 'servletEndpointRegistrar' threw exception; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'cachesEndpoint' defined in class path resource [org/springframework/boot/actuate/autoconfigure/cache/CachesEndpointAutoConfiguration.class]: Unsatisfied dependency expressed through method 'cachesEndpoint' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'cacheManager' defined in class path resource [org/springframework/boot/autoconfigure/cache/JCacheCacheConfiguration.class]: Unsatisfied dependency expressed through method 'cacheManager' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jCacheCacheManager' defined in class path resource [org/springframework/boot/autoconfigure/cache/JCacheCacheConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.cache.CacheManager]: Factory method 'jCacheCacheManager' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cacheConfiguration' defined in file [../config/CacheConfiguration.class]: Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.package.project.config.CacheConfiguration$$EnhancerBySpringCGLIB$$2ce84f38]: Constructor threw exception; nested exception is org.redisson.client.RedisConnectionException: Unable to connect to Redis server: localhost/127.0.0.1:6379
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.actuate.endpoint.web.ServletEndpointRegistrar]: Factory method 'servletEndpointRegistrar' threw exception; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'cachesEndpoint' defined in class path resource [org/springframework/boot/actuate/autoconfigure/cache/CachesEndpointAutoConfiguration.class]: Unsatisfied dependency expressed through method 'cachesEndpoint' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'cacheManager' defined in class path resource [org/springframework/boot/autoconfigure/cache/JCacheCacheConfiguration.class]: Unsatisfied dependency expressed through method 'cacheManager' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jCacheCacheManager' defined in class path resource [org/springframework/boot/autoconfigure/cache/JCacheCacheConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.cache.CacheManager]: Factory method 'jCacheCacheManager' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cacheConfiguration' defined in file [../config/CacheConfiguration.class]: Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.package.project.config.CacheConfiguration$$EnhancerBySpringCGLIB$$2ce84f38]: Constructor threw exception; nested exception is org.redisson.client.RedisConnectionException: Unable to connect to Redis server: localhost/127.0.0.1:6379
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'cachesEndpoint' defined in class path resource [org/springframework/boot/actuate/autoconfigure/cache/CachesEndpointAutoConfiguration.class]: Unsatisfied dependency expressed through method 'cachesEndpoint' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'cacheManager' defined in class path resource [org/springframework/boot/autoconfigure/cache/JCacheCacheConfiguration.class]: Unsatisfied dependency expressed through method 'cacheManager' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jCacheCacheManager' defined in class path resource [org/springframework/boot/autoconfigure/cache/JCacheCacheConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.cache.CacheManager]: Factory method 'jCacheCacheManager' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cacheConfiguration' defined in file [../config/CacheConfiguration.class]: Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.package.project.config.CacheConfiguration$$EnhancerBySpringCGLIB$$2ce84f38]: Constructor threw exception; nested exception is org.redisson.client.RedisConnectionException: Unable to connect to Redis server: localhost/127.0.0.1:6379
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'cacheManager' defined in class path resource [org/springframework/boot/autoconfigure/cache/JCacheCacheConfiguration.class]: Unsatisfied dependency expressed through method 'cacheManager' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jCacheCacheManager' defined in class path resource [org/springframework/boot/autoconfigure/cache/JCacheCacheConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.cache.CacheManager]: Factory method 'jCacheCacheManager' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cacheConfiguration' defined in file [../config/CacheConfiguration.class]: Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.package.project.config.CacheConfiguration$$EnhancerBySpringCGLIB$$2ce84f38]: Constructor threw exception; nested exception is org.redisson.client.RedisConnectionException: Unable to connect to Redis server: localhost/127.0.0.1:6379
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jCacheCacheManager' defined in class path resource [org/springframework/boot/autoconfigure/cache/JCacheCacheConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.cache.CacheManager]: Factory method 'jCacheCacheManager' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cacheConfiguration' defined in file [../config/CacheConfiguration.class]: Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.package.project.config.CacheConfiguration$$EnhancerBySpringCGLIB$$2ce84f38]: Constructor threw exception; nested exception is org.redisson.client.RedisConnectionException: Unable to connect to Redis server: localhost/127.0.0.1:6379
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.cache.CacheManager]: Factory method 'jCacheCacheManager' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cacheConfiguration' defined in file [../config/CacheConfiguration.class]: Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.package.project.config.CacheConfiguration$$EnhancerBySpringCGLIB$$2ce84f38]: Constructor threw exception; nested exception is org.redisson.client.RedisConnectionException: Unable to connect to Redis server: localhost/127.0.0.1:6379
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cacheConfiguration' defined in file [../config/CacheConfiguration.class]: Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.package.project.config.CacheConfiguration$$EnhancerBySpringCGLIB$$2ce84f38]: Constructor threw exception; nested exception is org.redisson.client.RedisConnectionException: Unable to connect to Redis server: localhost/127.0.0.1:6379
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.package.project.config.CacheConfiguration$$EnhancerBySpringCGLIB$$2ce84f38]: Constructor threw exception; nested exception is org.redisson.client.RedisConnectionException: Unable to connect to Redis server: localhost/127.0.0.1:6379
Caused by: org.redisson.client.RedisConnectionException: Unable to connect to Redis server: localhost/127.0.0.1:6379
Caused by: io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: localhost/127.0.0.1:6379
Caused by: java.net.ConnectException: Connection refused
... 12 common frames omitted
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 17.977 s
[INFO] Finished at: 2019-07-17T10:58:36-07:00
[INFO] ------------------------------------------------------------------------
最终更新：REDIS 成功集成
redis-server
./mvnw
【问题讨论】：
-
"Unable to connect to Redis server: localhost/127.0.0.1:6379" 表示你没有启动redis server。这和你关于 postgresql 的其他问题一样，你也可以使用 src/main/docker/redis.yml docker 文件从 docker 启动它。
-
虽然我的 postgresql 服务器没有启动，但我能够连接到 localhost。但是这一次，redis错误触发了spring bean错误，构建失败。
-
想分享一下你是如何高效学习的？
-
阅读官方文档、书籍、在线教程，了解 JHipster 使用的技术栈的主要组件：spring、spring boot、spring-security、JPA、Hibernate、docker、liquibase、h2、posgresql、mvn等.... 用于后端和 Angular、npm、webpack 用于前端。几周后，您应该会更舒服。
-
好的，我会这样做的，感谢您的建议。
标签： java spring-boot redis jhipster