我在使用Java MongoClient访问数据库中的集合时遇到问题

时间:2015-11-03 18:46:14

标签: mongodb collections authorization openshift

我一直在努力从我的Java客户端访问我的openshift Web应用程序中的MongoDB集合,并且每次都失败了。我可以连接,但无法以任何方式查询集合。

以下是当前的错误消息:

JBWEB000070:异常

org.springframework.web.util.NestedServletException:请求处理失败;嵌套异常是com.mongodb.MongoTimeoutException:在等待与ReadPreferenceServerSelector {readPreference = primary}匹配的服务器后30000 ms后超时。群集状态的客户端视图是{type = UNKNOWN,servers = [{address = 127.12.158.2:27017,type = UNKNOWN,state = CONNECTING,exception = {com.mongodb.MongoSecurityException:Exception authenticating},由{com.mongodb引起.MongoCommandException:命令失败,错误18:' auth failed'在服务器127.12.158.2:27017上。完整的回答是{"代码" :18," ok" :0.0," errmsg" :" auth失败" }}}]

    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:965)
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:844)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:734)
    org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:829)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:847)

JBWEB000071:根本原因

com.mongodb.MongoTimeoutException: Timed out after 30000 ms while waiting for a server that matches ReadPreferenceServerSelector{readPreference=primary}. Client view of cluster state is {type=UNKNOWN, servers=[{address=127.12.158.2:27017, type=UNKNOWN, state=CONNECTING, exception={com.mongodb.MongoSecurityException: Exception authenticating}, caused by {com.mongodb.MongoCommandException: Command failed with error 18: 'auth fails' on server 127.12.158.2:27017. The full response is { "code" : 18, "ok" : 0.0, "errmsg" : "auth fails" }}}]

    com.mongodb.connection.BaseCluster.createTimeoutException(BaseCluster.java:370)
    com.mongodb.connection.BaseCluster.selectServer(BaseCluster.java:101)
    com.mongodb.binding.ClusterBinding$ClusterBindingConnectionSource.<init>(ClusterBinding.java:75)
    com.mongodb.binding.ClusterBinding$ClusterBindingConnectionSource.<init>(ClusterBinding.java:71)
    com.mongodb.binding.ClusterBinding.getReadConnectionSource(ClusterBinding.java:63)
    com.mongodb.operation.OperationHelper.withConnection(OperationHelper.java:167)
    com.mongodb.operation.FindOperation.execute(FindOperation.java:394)
    com.mongodb.operation.FindOperation.execute(FindOperation.java:57)
    com.mongodb.Mongo.execute(Mongo.java:760)
    com.mongodb.Mongo$2.execute(Mongo.java:747)
    com.mongodb.OperationIterable.iterator(OperationIterable.java:47)
    com.mongodb.FindIterableImpl.iterator(FindIterableImpl.java:135)
    com.mongodb.FindIterableImpl.iterator(FindIterableImpl.java:36)
    org.jboss.tools.example.springmvc.mongodb.model.util.MongodbUtil.getCataloguesWithoutJoins(MongodbUtil.java:184)

我用来获取在堆栈跟踪中提到的整个MondodbUtil类中使用的mongoClient的代码是:

public static MongoClient getMongoClient() {
    // If mongoClient not yet set up 
    if (mongoClient == null) {
        mongoClient = new MongoClient(new MongoClientURI(
                "mongodb://"+System.getenv("OPENSHIFT_MONGODB_DB_USER")+":"+
            System.getenv("OPENSHIFT_MONGODB_DB_PASSWORD")+"@"+
            System.getenv("OPENSHIFT_MONGODB_DB_HOST")+":"+
            System.getenv("OPENSHIFT_MONGODB_DB_PORT")+"/jbosseap"));
    }

    return mongoClient;
}

我也尝试过:

public static MongoClient getMongoClient() {
    // If mongoClient not yet set up 
    if (mongoClient == null) {
        List<ServerAddress> seeds = new ArrayList<ServerAddress>();
        seeds.add( new ServerAddress(System.getenv("OPENSHIFT_MONGODB_DB_HOST"), 
                    Integer.parseInt(System.getenv("OPENSHIFT_MONGODB_DB_PORT"))));
        List<MongoCredential> credentials = new ArrayList<MongoCredential>();
        credentials.add(
            MongoCredential.createMongoCRCredential(
                "OPENSHIFT_MONGODB_DB_USER",
                "jbosseap",
                "OPENSHIFT_MONGODB_DB_PASSWORD".toCharArray()
            )
        );
        mongoClient = new MongoClient( seeds, credentials );

    }
    return mongoClient;
}

And also:

public static MongoClient getMongoClient() {
    // If mongoClient not yet set up 
    if (mongoClient == null) {

            mongoClient = new MongoClient(
                new ServerAddress(System.getenv("OPENSHIFT_MONGODB_DB_HOST"), 
                Integer.parseInt(System.getenv("OPENSHIFT_MONGODB_DB_PORT"))));

    }
    return mongoClient;
}

I have run out of ideas now, so seeking your wisdom!

2 个答案:

答案 0 :(得分:1)

在执行程序之前,你是否保持mongod进程运行? 在执行程序之前,请按照以下步骤操作:

  1. 按Windows键并键入cmd.exe
  2. Ctrl+Shift+Enter以管理员身份运行命令提示符
  3. 在命令提示符下,键入cd c:/Mongo/mongodb/bin(将其替换为实际的bin路径)
  4. 确保在这样的文件夹中配置了数据库路径: c:/data/db(此路径可能因您使用的命令提示符而异)
  5. 在命令提示符下运行以下命令启动mongod进程: mongod
  6. 一旦mongod进程启动,您将在命令提示符下收到以下消息:
  7.   

    2017-02-26T11:33:37.233 + 0530 I FTDC [initandlisten]使用目录“E:/data/db/diagnostic.data”初始化全时诊断数据“2017-02-26T11:33:37.359+ 0530 I NETWORK [thread1]等待端口27017上的连接

    1. 现在执行你的程序。
    2. 我遇到了类似的问题,这就是解决问题的方法。

答案 1 :(得分:0)

我已经解决了这个问题。

使用环境变量OPENSHIFT_MONGODB_DB_USER不起作用,因为它设置为空白。如果在代码中硬编码为 admin ,则问题就会消失。

有点令人困惑(至少对我来说)环境变量OPENSHIFT_MONGODB_DB_PASSWORD 已设置