SpringMVC集成MongoDb

（1）pom添加相关依赖

     <dependency>
       <groupId>org.springframework.data</groupId>
       <artifactId>spring-data-mongodb</artifactId>
       <version>1.10.18.RELEASE</version>
     </dependency>

（2）注册相关bean

 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));
     }
 }

（3）编写实体类

 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 +
                 '}';
     }
 }

（4）编写dao

 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);
     }
 }