Question

我有很多代码可以从mongodb数据库中检索文档。它在普通的java项目中工作正常（使用public static void main），但是当我在Sprig-MVC应用程序中尝试相同的代码块时，我得到了

HTTP状态500 - 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。集群状态的客户端视图是{type = UNKNOWN，servers = [{address = localhost：27017，type = UNKNOWN，state = CONNECTING，exception = {com.mongodb.MongoException：java.lang.NoSuchMethodError：org.bson.BsonBinaryReader。（Lorg / bson / io / BsonInput;）V}，由{java.lang.NoSuchMethodError：org.bson.BsonBinaryReader。（Lorg / bson / io / BsonInput;）V}}引起}＆＃34; ***异常消息..

以下是日志：

servlet [mvc-dispatcher]的Servlet.service（）在路径[/ temp]的上下文中引发异常[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。集群状态的客户端视图是{type = UNKNOWN，servers = [{address = localhost：27017，type = UNKNOWN，state = CONNECTING，exception = {com.mongodb.MongoException：java.lang.NoSuchMethodError：org.bson.BsonBinaryReader。（Lorg / bson / io / BsonInput;）V}，由{java.lang.NoSuchMethodError：org.bson.BsonBinaryReader。（Lorg / bson / io / BsonInput;）V}}]]引起的 com.mongodb.MongoTimeoutException：在等待与ReadPreferenceServerSelector {readPreference = primary}匹配的服务器30000 ms后超时。集群状态的客户端视图是{type = UNKNOWN，servers = [{address = localhost：27017，type = UNKNOWN，state = CONNECTING，exception = {com.mongodb.MongoException：java.lang.NoSuchMethodError：org.bson.BsonBinaryReader。（Lorg / bson / io / BsonInput;）V}，由{java.lang.NoSuchMethodError：org.bson.BsonBinaryReader。（Lorg / bson / io / BsonInput;）V}}]引起 at com.mongodb.connection.BaseCluster.createTimeoutException（BaseCluster.java:370）在com.mongodb.connection.BaseCluster.selectServer（BaseCluster.java:101）在com.mongodb.binding.ClusterBinding $ ClusterBindingConnectionSource。（ClusterBinding.java:75）在com.mongodb.binding.ClusterBinding $ ClusterBindingConnectionSource。（ClusterBinding.java:71）在com.mongodb.binding.ClusterBinding.getReadConnectionSource（ClusterBinding.java:63）在com.mongodb.operation.OperationHelper.withConnection（OperationHelper.java:166）在com.mongodb.operation.FindOperation.execute（FindOperation.java:394）在com.mongodb.operation.FindOperation.execute（FindOperation.java:57）在com.mongodb.Mongo.execute（Mongo.java:738）在com.mongodb.Mongo $ 2.execute（Mongo.java:725）在com.mongodb.FindIterableImpl $ FindOperationIterable.first（FindIterableImpl.java:197）在com.mongodb.FindIterableImpl.first（FindIterableImpl.java:140）

以下是java代码：

import java.util.logging.Level;
import java.util.logging.Logger;

import org.bson.Document;

import com.mongodb.MongoClient;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoDatabase;

import pojos.LoginCredentials;

public class LoginDAO {

private LoginCredentials logindata;


public LoginDAO(LoginCredentials logindata){

    this.logindata=logindata;


}

        public String retrievedPassword(){

               MongoClient mongoClient = new MongoClient( "localhost" , 27017 );

                 MongoDatabase db = mongoClient.getDatabase("progressreport");

                 MongoCollection<Document> coll = db.getCollection("studentprofile");

                Document cursor = coll.find().first();
            System.out.println(cursor.toString());
            return cursor.getString("password");
        }
}

HTTP状态500 - 请求处理失败;嵌套异常是com.mongodb.MongoTimeoutException

0 个答案: