内部服务器错误 500，在 Docker 中访问 Spring 引导端点时

Question

我正在尝试使用 Docker 学习应用程序部署。 我的配置如下：

应用程序属性

####### Mongo Properties ###########
spring.data.mongodb.uri=mongodb://mongo/locationsdb

文件

FROM openjdk:14-alpine
ARG JAR_FILE=./target/*jar
COPY ${JAR_FILE} jarapp.jar
EXPOSE 8080
ENTRYPOINT ["java", "-Dspring.profiles.active=docker", "-jar", "jarapp.jar"]

docker-compose.yml

version: "3"

services:
  mongodb-container:
    image: mongo:latest
    container_name: "mongodb-container"
    restart: always
    ports:
      - 27017:27017
  server-container:
    image: server_side
    container_name: "server-container"
    restart: always
    ports:
      - 8080:8080
    links:
      - mongodb-container
    depends_on:
      - mongodb-container

在上述之后，我做了以下事情：

docker-compose 配置

docker-compose up --build

但我得到了以下错误：

server-container   | 2021-09-02 09:44:41.253  INFO 1 --- [localhost:27017] org.mongodb.driver.cluster               : ***Exception in monitor thread while connecting to server localhost:27017***
server-container   |
server-container   | com.mongodb.MongoSocketOpenException: **Exception opening socket**
server-container   |    at com.mongodb.internal.connection.SocketStream.open(SocketStream.java:70) ~[mongodb-driver-core-4.2.3.jar!/:na]
server-container   |    at com.mongodb.internal.connection.InternalStreamConnection.open(InternalStreamConnection.java:143) ~[mongodb-driver-core-4.2.3.jar!/:na]
server-container   |    at com.mongodb.internal.connection.DefaultServerMonitor$ServerMonitorRunnable.lookupServerDescription(DefaultServerMonitor.java:188) ~[mongodb-driver-core-4.2.3.jar!/:na]
server-container   |    at com.mongodb.internal.connection.DefaultServerMonitor$ServerMonitorRunnable.run(DefaultServerMonitor.java:144) ~[mongodb-driver-core-4.2.3.jar!/:na]
server-container   |    at java.base/java.lang.Thread.run(Thread.java:832) ~[na:na]
server-container   | Caused by: java.net.ConnectException: Connection refused
server-container   |    at java.base/sun.nio.ch.Net.pollConnect(Native Method) ~[na:na]
server-container   |    at java.base/sun.nio.ch.Net.pollConnectNow(Net.java:589) ~[na:na]
server-container   |    at java.base/sun.nio.ch.NioSocketImpl.timedFinishConnect(NioSocketImpl.java:542) ~[na:na]
server-container   |    at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:597) ~[na:na]
server-container   |    at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:333) ~[na:na]
server-container   |    at java.base/java.net.Socket.connect(Socket.java:648) ~[na:na]
server-container   |    at com.mongodb.internal.connection.SocketStreamHelper.initialize(SocketStreamHelper.java:107) ~[mongodb-driver-core-4.2.3.jar!/:na]
server-container   |    at com.mongodb.internal.connection.SocketStream.initializeSocket(SocketStream.java:79) ~[mongodb-driver-core-4.2.3.jar!/:na]
server-container   |    at com.mongodb.internal.connection.SocketStream.open(SocketStream.java:65) ~[mongodb-driver-core-4.2.3.jar!/:na]
server-container   |    ... 4 common frames omitted
server-container   |
server-container   | 2021-09-02 09:44:43.395  INFO 1 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path ''
server-container   | 2021-09-02 09:44:43.429  INFO 1 --- [           main] c.f.virtuallab.VirtuallabApplication     : Started VirtuallabApplication in 26.943 seconds (JVM running for 28.445)
mongodb-container  | {"t":{"$date":"2021-09-02T09:45:13.967+00:00"},"s":"I",  "c":"STORAGE",  "id":22430,   "ctx":"Checkpointer","msg":"WiredTiger message","attr":{"message":"[1630575913:967258][1:0x7fef40740700], WT_SESSION.checkpoint: [WT_VERB_CHECKPOINT_PROGRESS] saving checkpoint snapshot min: 34, snapshot max: 34 snapshot count: 0, oldest timestamp: (0, 0) , meta checkpoint timestamp: (0, 0) base write gen: 1"}}

正如它在日志中显示的那样，有一个异常打开套接字问题，然后它说： server-container | 2021-09-02 09:44:43.429 INFO 1 --- [ main] cfvirtuallab.VirtuallabApplication ：之后在 26.943 秒内启动 VirtuallabApplication（JVM 运行 28.445） 。

当我尝试我的端点时： localhost:8080/api/v1/locations我只收到Internal Server Error (500) 。

有人可以指导我如何正确连接mongodb并启动应用程序吗？

Answer 1

尝试改变

####### Mongo Properties ###########
spring.data.mongodb.uri=mongodb://mongodb-container/locationsdb

您正在使用mongo为您的mongodb主机，但您已声明mongodb容器作为mongodb-container在你的docker-compose文件。 所以你的mongodb实例应该由mongodb-container而不是由mongo 。

Answer 2

我认为如果在前端已经编程，则无需向主机公开 mongodb 端口。 但是必须提及相同的用户名和密码 alogwith 主机名我的意思是 mongodb 容器的容器名称。