how to connect to mongodb from java

Recently installed the mongodb3.0, and enabled the authorization authentication, the DOS window operation without any problems, as shown in figure: In order to maintain the convenience of downloading a client tool Robomongo 0.8.4, user name, password, such as configuration better solution test, As a result, the connection service does not have a problem, and permission validation does not pass, as shown: View the log, found a sentence: Failed to authenticate admin@admin with mechanism

One, replica set configurationSet up, 1 main instances, 1 units from the instance, 1 arbitration instances. MongoDB recommends an odd number of machines in a replica setSecond, C # connection string1. ReadMongodb://secondary.com/?slaveok=true2. WriteMongodb://primary.comThird, experience1. Using a 1.7 C # driver, do not support configuring/?readpreference=secondary or/?readpreference=secondarypreferred directly in the connection string2.readPreference

Mongoclient ();Mongo mongoClient1 = new Mongo ();Mode two (specify IP):Mongoclient MongoClient2 = new Mongoclient ("localhost");Mode two (specify IP, port):Mongoclient MongoClient3 = new Mongoclient ("localhost", 27017);Mode three: Connect to a MONGODB server cluster (will automatically discover the primary server)Mongoclient mongoClient4 = new Mongoclient (arrays.aslist (New serveraddress ("localhost", 27

Label:First, let's take a look at the map to see if the parents have the same connection problem. I have met two times and felt it necessary to record it. Ready for future viewing. Analysis reason: This is the start of the Shell editor when the problem occurs, I analyze he may be a server connection problem. Workaround: In the MONGO installation file, create a mongo.config file that reads as follows: If you start MONGO every time, it will be a very troublesome thing to start from CMD. It is co

That's the mistake!I searched the Internet. The solution is almost all about the issue of authentication mechanisms:>Use Admin switched to DB admin>Db.system.version.find () {"_id":"featurecompatibilityversion","version":"3.4" } { "_id":"Authschema","CurrentVersion":5}Then delete the user after the "CurrentVersion": Change to 3 and finally add the user.But I tried it many times and I didn't use!!!!!!!!!!!!!!!!!!!!.If you use the above solution, it may be a mechanism problem. If not, you should n

In the form of batch file, first solve this problem really is not I am good at, thanks to warm uncle help me. Because I found out that the DOS code is quite different from the batch file. Here is my solution to this problem when the harvest, of course, without the help of small warm. Here are some of the absolute and relative paths written in the batch fileFirst I try the following method, which is written in the batch file below and then the DOS environment to assign the 1% parameterHowever, th

Tags: mongodb java databaseDepending on the version, the API may be different, and the 3.0 version is used for this study. 1. The JDBC driver version of MongoDB used is: Mongo-java-driver-3.0.0.jar 2. This section simply introduces JDBC operations and does not consider efficiency issues for the time being. 3, the packa

Issues to be addressed:Want to develop a JMX client to configure a local Java program. The specific requirements are as follows:Please do not recommend the use of jconsole! Jconsole is inappropriate because jconsole is a generic JMX client that has a negative impact on the performance of the main program.There is an example on the Oracle website that uses Rmiconnector and "host: Port number" as a parameter, but I do not know where to set the port numb

First download the corresponding driver: official online Download: http://central.maven.org/maven2/org/mongodb/mongo-java-driver/This article uses the Mongo-2.10.1.jar version:There are detailed code below, and each method can be executed separately. In order to make it easy to run, the database is relink in each method, but not again, because the purpose of this is to know

Java connects to the MongoDB database and javamongodb Database I tried MongoDB during this time, and it is very easy to use and convenient. It has a great advantage over relational databases. So I tried to connect to MongoDB using java