<dependency>

       <groupId>org.springframework.data</groupId>

       <artifactId>spring-data-mongodb</artifactId>

       <version>1.10.18.RELEASE</version>

     </dependency>

 package cn.coreqi.config;

 import com.mongodb.Mongo;

 import com.mongodb.MongoClient;

 import com.mongodb.MongoCredential;

 import com.mongodb.ServerAddress;

 import org.springframework.context.annotation.Configuration;

 import org.springframework.data.mongodb.config.AbstractMongoConfiguration;

 import org.springframework.data.mongodb.repository.config.EnableMongoRepositories;

 import java.util.Arrays;

 @Configuration

 @EnableMongoRepositories(basePackages = "cn.coreqi.dao.mongodb")

 public class MongodbConfig extends AbstractMongoConfiguration {

     @Override

     protected String getDatabaseName() {

         return "springmongo";

     }

     @Override

     public Mongo mongo() throws Exception {

         MongoCredential credential = MongoCredential.createCredential("fanqi","springmongo","123456".toCharArray());

         return new MongoClient(new ServerAddress("192.168.205.128",27017), Arrays.asList(credential));

     }

 }

 package cn.coreqi.entities;

 import org.springframework.data.annotation.Id;

 import org.springframework.data.mongodb.core.mapping.Document;

 import org.springframework.data.mongodb.core.mapping.Field;

 import java.io.Serializable;

 @Document

 public class User implements Serializable {

     @Id

     private Integer Id;

     @Field("age")

     private Integer Age;

     private String UserName;

     private String PassWord;

     private Integer Enabled;

     public User(Integer id, Integer age, String userName, String passWord, Integer enabled) {

         Id = id;

         Age = age;

         UserName = userName;

         PassWord = passWord;

         Enabled = enabled;

     }

     public Integer getId() {

         return Id;

     }

     public void setId(Integer id) {

         Id = id;

     }

     public Integer getAge() {

         return Age;

     }

     public void setAge(Integer age) {

         Age = age;

     }

     public String getUserName() {

         return UserName;

     }

     public void setUserName(String userName) {

         UserName = userName;

     }

     public String getPassWord() {

         return PassWord;

     }

     public void setPassWord(String passWord) {

         PassWord = passWord;

     }

     public Integer getEnabled() {

         return Enabled;

     }

     public void setEnabled(Integer enabled) {

         Enabled = enabled;

     }

     @Override

     public String toString() {

         return "User{" +

                 "Id=" + Id +

                 ", Age=" + Age +

                 ", UserName='" + UserName + '\'' +

                 ", PassWord='" + PassWord + '\'' +

                 ", Enabled=" + Enabled +

                 '}';

     }

 }

 package cn.coreqi.dao.mongodb;

 import cn.coreqi.entities.User;

 import org.springframework.beans.factory.annotation.Autowired;

 import org.springframework.data.mongodb.core.MongoOperations;

 import org.springframework.data.mongodb.core.query.Criteria;

 import org.springframework.data.mongodb.core.query.Query;

 import org.springframework.stereotype.Repository;

 @Repository

 public class UserMongoDao {

     @Autowired

     private MongoOperations mongo;

     public long count(){

         return mongo.getCollection("user").count();

     }

     public void addUser(User user){

         mongo.save(user,"user");

     }

     public User getById(int id){

         return mongo.findById(id,User.class);

     }

     public User getByUserName(String userName){

         return mongo.findOne(Query.query(Criteria.where("UserName").is(userName)),User.class);

     }

     public void delById(int id){

         mongo.remove(Query.query(Criteria.where("Id").is(id)),User.class);

     }

 }