jhipster - 使用 Jhipster 应用程序获取用户创建异常
问题描述
我已经使用 Jhipster (Angular, MySQL) 成功生成了应用程序。作为管理员,我已登录并尝试创建新用户,但出现以下错误。
2021-05-10 21:55:14.218 ERROR 29756 --- [ XNIO-1 task-2] com.kc.bsadhana.service.UserService : Exception in createUser() with cause = 'java.lang.RuntimeException: Connection refused' and exception = 'Connection refused; nested exception is java.lang.RuntimeException: Connection refused'
org.springframework.dao.DataAccessResourceFailureException: Connection refused; nested exception is java.lang.RuntimeException: Connection refused
at org.springframework.data.elasticsearch.core.ElasticsearchExceptionTranslator.translateExceptionIfPossible(ElasticsearchExceptionTranslator.java:75)
at org.springframework.data.elasticsearch.core.ElasticsearchRestTemplate.translateException(ElasticsearchRestTemplate.java:362)
at org.springframework.data.elasticsearch.core.ElasticsearchRestTemplate.execute(ElasticsearchRestTemplate.java:345)
at org.springframework.data.elasticsearch.core.ElasticsearchRestTemplate.doIndex(ElasticsearchRestTemplate.java:143)
...
Caused by: java.lang.RuntimeException: Connection refused
at org.springframework.data.elasticsearch.core.ElasticsearchRestTemplate.translateException(ElasticsearchRestTemplate.java:360)
... 198 common frames omitted
Caused by: java.net.ConnectException: Connection refused
at org.elasticsearch.client.RestClient.extractAndWrapCause(RestClient.java:849)
at org.elasticsearch.client.RestClient.performRequest(RestClient.java:259)
at org.elasticsearch.client.RestClient.performRequest(RestClient.java:246)
at org.elasticsearch.client.RestHighLevelClient.internalPerformRequest(RestHighLevelClient.java:1613)
at org.elasticsearch.client.RestHighLevelClient.performRequest(RestHighLevelClient.java:1583)
at org.elasticsearch.client.RestHighLevelClient.performRequestAndParseEntity(RestHighLevelClient.java:1553)
at org.elasticsearch.client.RestHighLevelClient.index(RestHighLevelClient.java:970)
at org.springframework.data.elasticsearch.core.ElasticsearchRestTemplate.lambda$doIndex$0(ElasticsearchRestTemplate.java:143)
at org.springframework.data.elasticsearch.core.ElasticsearchRestTemplate.execute(ElasticsearchRestTemplate.java:343)
... 197 common frames omitted
Caused by: java.net.ConnectException: Connection refused
at java.base/sun.nio.ch.Net.pollConnect(Native Method)
at java.base/sun.nio.ch.Net.pollConnectNow(Net.java:589)
at java.base/sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:839)
at org.apache.http.impl.nio.reactor.DefaultConnectingIOReactor.processEvent(DefaultConnectingIOReactor.java:174)
at org.apache.http.impl.nio.reactor.DefaultConnectingIOReactor.processEvents(DefaultConnectingIOReactor.java:148)
at org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor.execute(AbstractMultiworkerIOReactor.java:351)
at org.apache.http.impl.nio.conn.PoolingNHttpClientConnectionManager.execute(PoolingNHttpClientConnectionManager.java:221)
at org.apache.http.impl.nio.client.CloseableHttpAsyncClientBase$1.run(CloseableHttpAsyncClientBase.java:64)
... 1 common frames omitted
2021-05-10 21:55:14.238 ERROR 29756 --- [ XNIO-1 task-2] com.kc.bsadhana.web.rest.UserResource : Exception in createUser() with cause = 'java.lang.RuntimeException: Connection refused' and exception = 'Connection refused; nested exception is java.lang.RuntimeException: Connection refused'
org.springframework.dao.DataAccessResourceFailureException: Connection refused; nested exception is java.lang.RuntimeException: Connection refused
在application-dev.yml
文件中,我输入了数据库凭据:
datasource:
type: com.zaxxer.hikari.HikariDataSource
url: jdbc:mysql://localhost:3306/bsadhana?useUnicode=true&characterEncoding=utf8&useSSL=false&useLegacyDatetimeCode=false&serverTimezone=UTC&createDatabaseIfNotExist=true
username: root
password: rxxxx!
hikari:
甚至 jhipster 相关的表也是在我的数据库中创建的。但是当我尝试创建一个新用户时,它会抛出上述错误。我还有其他地方需要输入这些凭据吗?
解决方案
该错误表明您的应用程序无法连接到您的 Elasticsearch 实例,您应该确保按照文档中的说明使用以下命令启动它:
docker-compose -f src/main/docker/elasticsearch.yml up
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