MongoDB整合Spring持久化

MongoDB默认是没有用户名和密码的，要使用用户名密码，就得为数据库添加用户名

db.createUser(
   {
     user: "root",
     pwd: "root",
     roles:
       [
         { role: "readWrite", db: "mydb" },
         "clusterAdmin"
       ]
   }
)

默认新增数据会有 _class，去掉 _class

import java.util.Arrays;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.SimpleMongoDbFactory;
import org.springframework.data.mongodb.core.convert.DbRefResolver;
import org.springframework.data.mongodb.core.convert.DefaultDbRefResolver;
import org.springframework.data.mongodb.core.convert.DefaultMongoTypeMapper;
import org.springframework.data.mongodb.core.convert.MappingMongoConverter;
import org.springframework.data.mongodb.core.mapping.MongoMappingContext;

import com.mongodb.MongoClient;
import com.mongodb.MongoCredential;
import com.mongodb.ServerAddress;

@Configuration
public class SpringMongoConfig {
    public @Bean MongoTemplate mongoTemplate() throws Exception {
        //权限验证 MongoCredential
        MongoCredential credential = MongoCredential.createCredential("root", "mydb", "root".toCharArray());
        ServerAddress serverAddress = new ServerAddress("localhost", 27017);
        MongoClient mongoClient = new MongoClient(serverAddress, Arrays.asList(credential));
        SimpleMongoDbFactory mongoDbFactory = new SimpleMongoDbFactory(mongoClient, "mydb");
        DbRefResolver dbRefResolver = new DefaultDbRefResolver(mongoDbFactory);
        MappingMongoConverter converter = new MappingMongoConverter(dbRefResolver, new MongoMappingContext());
        //不插入_class
        converter.setTypeMapper(new DefaultMongoTypeMapper(null));
        MongoTemplate mongoTemplate = new MongoTemplate(mongoDbFactory, converter);
        return mongoTemplate;
    }
}

使用上面的类获取MongoTemplate 用来持久化就不会再有“_class”啦。。。。

数据持久化Dao

import java.util.List;

public  interface  BaseDao {
    public void add(T entity) throws Exception;
    public void addBatch(List entities) throws Exception;
    public void delete(T entity) throws Exception ;
    public void update(T query, T update) throws Exception;
    public void updateByID(PK id,T entity) throws Exception;
    public T findByID(PK id);
    public List findAll();
    public T findOne(T entity) throws Exception ;
    public List find(T entity) throws Exception ;
}

数据持久化DaoImpl

import java.beans.PropertyDescriptor;
import java.io.Serializable;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.ParameterizedType;
import java.util.List;

import org.springframework.data.annotation.Transient;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.mongodb.core.query.Update;

import com.mongodb.dao.BaseDao;
import com.mongodb.model.SpringMongoConfig;

public class BaseDaoImp<PK extends Serializable, T> implements BaseDao<PK, T> {
    @Resource(name = "mongoTemplate")
    private MongoTemplate mongoTemplate;
    private Class clazz;

    @SuppressWarnings("unchecked")
    public BaseDaoImp() {
        try {
            //获取mongoTemplate
             if (mongoTemplate==null) {
                mongoTemplate = new SpringMongoConfig().mongoTemplate();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        //获取对象的class
        clazz = (Class) ((ParameterizedType) getClass().getGenericSuperclass()).getActualTypeArguments()[1];
    }
    @Override
    public void add(T entity) throws Exception {
        mongoTemplate.insert(entity);
    }
    @Override
    public void addBatch(List entities) throws Exception {
        mongoTemplate.insertAll(entities);
    }
    @Override
    public void delete(T entity) throws Exception {
        Field[] fields = clazz.getDeclaredFields();
        Query query = new Query();
        for (Field field : fields) {
            if (field.isAnnotationPresent(Transient.class) || field.getName().equalsIgnoreCase("serialVersionUID")) {
                continue;
            }
            PropertyDescriptor pd = new PropertyDescriptor(field.getName(), clazz);
            Method getMthod = pd.getReadMethod();
            Object object = getMthod.invoke(entity);
            if (object != null) {
                query.addCriteria(new Criteria(field.getName()).is(object));
            }
        }
        mongoTemplate.remove(query,clazz);
    }
    @Override
    public void update(T queryT, T updateT) throws Exception {
        Query query = new Query();
        Field[] fields = clazz.getDeclaredFields();
        for (Field field : fields) {
            if (field.isAnnotationPresent(Transient.class) || field.getName().equalsIgnoreCase("serialVersionUID")) {
                continue;
            }
            PropertyDescriptor pd = new PropertyDescriptor(field.getName(), clazz);
            Method getMthod = pd.getReadMethod();
            Object object = getMthod.invoke(queryT);
            if (object != null) {
                query.addCriteria(new Criteria(field.getName()).is(object));
            }
        }
        Update update = new Update();
        for (Field field : fields) {
            if (field.isAnnotationPresent(Transient.class) || field.getName().equalsIgnoreCase("serialVersionUID")) {
                continue;
            }
            PropertyDescriptor pd = new PropertyDescriptor(field.getName(), clazz);
            Method getMthod = pd.getReadMethod();
            Object object = getMthod.invoke(updateT);
            if (object != null) {
                update.set(field.getName(), object);
            }
        }
        mongoTemplate.updateMulti(query, update, clazz);
    }
    @Override
    public void updateByID(PK id, T entity) throws Exception {
        Field[] fields = clazz.getDeclaredFields();
        Update update = new Update();
        for (Field field : fields) {
            if (field.isAnnotationPresent(Transient.class) || field.getName().equalsIgnoreCase("serialVersionUID")) {
                continue;
            }
            PropertyDescriptor pd = new PropertyDescriptor(field.getName(), clazz);
            Method getMthod = pd.getReadMethod();
            Object object = getMthod.invoke(entity);
            if (object != null) {
                update.set(field.getName(), object);
            }
        }
        mongoTemplate.updateFirst(new Query(Criteria.where("_id").is(id)), update, clazz);
    }
    @Override
    public T findByID(PK id) {
        return mongoTemplate.findById(id, clazz);
    }
    @Override
    public List findAll() {
        return mongoTemplate.findAll(clazz);
    }
    @Override
    public T findOne(T entity) throws Exception {
        Field[] fields = clazz.getDeclaredFields();
        Query query = new Query();
        for (Field field : fields) {
            if (field.isAnnotationPresent(Transient.class) || field.getName().equalsIgnoreCase("serialVersionUID")) {
                continue;
            }
            PropertyDescriptor pd = new PropertyDescriptor(field.getName(), clazz);
            Method getMthod = pd.getReadMethod();
            Object object = getMthod.invoke(entity);
            if (object != null) {
                query.addCriteria(new Criteria(field.getName()).is(object));
            }
        }
        return mongoTemplate.findOne(query, clazz);
    }
    @Override
    public List find(T entity) throws Exception {
        Field[] fields = clazz.getDeclaredFields();
        Query query = new Query();
        for (Field field : fields) {
            if (field.isAnnotationPresent(Transient.class) || field.getName().equalsIgnoreCase("serialVersionUID")) {
                continue;
            }
            PropertyDescriptor pd = new PropertyDescriptor(field.getName(), clazz);
            Method getMthod = pd.getReadMethod();
            Object object = getMthod.invoke(entity);
            if (object != null) {
                query.addCriteria(new Criteria(field.getName()).is(object));
            }
        }
        return mongoTemplate.find(query, clazz);
    }
}

mongodb.properties配置文件：

#数据库名称
mongo.dbname = mydb
#密码
mongo.password = root
#用户名
mongo.username = root
 #主机
mongo.host = 127.0.0.1
#端口号
mongo.port= 27017
#一个线程变为可用的最大阻塞数
mongo.connectionsPerHost= 8
#线程队列数,它以上面connectionsPerHost值相乘的结果就是线程队列最大值
mongo.threadsAllowedToBlockForConnectionMultiplier= 4
#连接超时时间（毫秒）
mongo.connectTimeout= 1500
#最大等待时间
mongo.maxWaitTime= 1500
#自动重连
mongo.autoConnectRetry= true 
#scoket保持活动
mongo.socketKeepAlive= true
#scoket超时时间
mongo.socketTimeout=1500
#读写分离
mongo.slaveOk=true

app-context.xml配置文件，与Spring整合

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:tx="http://www.springframework.org/schema/tx" xmlns:task="http://www.springframework.org/schema/task"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xsi:schemaLocation="
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
      http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
      http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.1.xsd
       http://www.springframework.org/schema/aop 
        http://www.springframework.org/schema/aop/spring-aop-3.0.xsd ">
    
    
    
    <import resource="mongo-config.xml" />
    
    <bean
        class="org.springframework.context.annotation.CommonAnnotationBeanPostProcessor" />
    
    <context:component-scan base-package="com.springmvc.imooc" />
    
    
    
    <mvc:annotation-driven />
    
    
beans>

测试：
/*
* 文件名：MongoDBTest.java
* 版权：Copyright 2007-2016 517na Tech. Co. Ltd. All Rights Reserved.
* 描述： MongoDBTest.java
* 修改人：peiyu
* 修改时间：2016年8月3日
* 修改内容：新增
*/
package com.springmvc.imooc.test;

import java.util.List;

import org.apache.commons.lang.builder.ReflectionToStringBuilder;
import org.junit.Test;

import com.mongodb.dao.UserDao;
import com.mongodb.dao.impl.UserDaoImpl;
import com.mongodb.model.User;

/**
* @author peiyu
*/
public class MongoDBTest extends BaseTest {

@Test
public void test() throws Exception {

    UserDao userDao=new UserDaoImpl();
    User user = new User();
    user.setAge(10);
    user.setId(11221111);
    user.setEmail("123@456123123123");
    user.setName("name456123123123");
    user.setPasword("test456123123123"); 
    List users = userDao.find(user);
    System.out.println("----------------新增前-------------------------------------");
    for (User user2 : users) {
        System.out.println("新增前："+ReflectionToStringBuilder.toString(user2));
    }
    userDao.add(user);
    users = userDao.find(user);
    System.out.println("----------------新增后-------------------------------------");
    for (User user2 : users) {
        System.out.println("新增后："+ReflectionToStringBuilder.toString(user2));
    }
    userDao.delete(user);
    users = userDao.find(user);
    System.out.println("----------------删除后-------------------------------------");
    for (User user2 : users) {
        System.out.println("删除后："+ReflectionToStringBuilder.toString(user2));
    }
}

}