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HomeDatabaseMysql TutorialMongoDB:mongodb在项目开发时的安全验证、分页查询操作

MongoDB:mongodb在项目开发时的安全验证、分页查询操作。 对于数据库而言,在项目应用中都需要安全验证,不然,就会报错,呵呵~~ 现在贴出来我在项目中是怎么做的。 数据源bean: package com.ishowchina.user.dao;import com.mongodb.BasicDBObject;impo

MongoDB:mongodb在项目开发时的安全验证、分页查询操作。

对于数据库而言,在项目应用中都需要安全验证,不然,就会报错,呵呵~~

现在贴出来我在项目中是怎么做的。

数据源bean:

package com.ishowchina.user.dao;
import com.mongodb.BasicDBObject;
import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBCursor;
import com.mongodb.DBObject;
import com.mongodb.MongoClient;

public class DataSource {
	private String ip;//数据库连接信息要从配置文件中获取  参考appconfig.properties文件
	private Integer port;
	protected String dbName;
	protected Boolean auth;
	protected String userName;
	protected String passWord;
	//打开连接 此处在获取数据库信息(ip、账户、密码等)后,打开数据库。
	public MongoClient OpenConnection() throws Exception{
		MongoClient mongoClient = new MongoClient( ip,port);
		return mongoClient;
	}
	//获取数据集  此处为数据库安全验证
	public DBCollection getCollection(MongoClient client,String tableName){
		if(client==null){
			return null;
		}else {
			DB db = client.getDB(getDbName());//获取数据库
			boolean r=true;//验证用户及密码
			if(auth!=null && auth.equals(true)){
				r = db.authenticate(userName, passWord.toCharArray());//密码验证
			}
			if(r){
				DBCollection coll = db.getCollection(tableName);//获取数据集
				return coll;
			}else {
				return null;
			}
		}
	}
	//释放连接
	public void ReleaseConnection(MongoClient mongoClient){
		if(mongoClient!=null){
			mongoClient.close();
		}
	}
	//删除操作,注意要传入参数
	public void deleteObject(DBObject o,DBCollection col){
		col.remove(o);
	}
	//分页查询   分页查询mongodb已经为我们集成了,只需调用api就行
	public DBCursor queryPage(DBObject query,DBObject sort,int start,int limit,DBCollection col){
		//.sort('account',1).limit(10),int count = cursor.count()
		BasicDBObject exp=new BasicDBObject("_id",0);
		return col.find(query,exp).sort(sort).skip(start).limit(limit);
	}
	public String getIp() {
		return ip;
	}
	public void setIp(String ip) {
		this.ip = ip;
	}
	public Integer getPort() {
		return port;
	}
	public void setPort(Integer port) {
		this.port = port;
	}
	public String getDbName() {
		return dbName;
	}
	public Boolean getAuth() {
		return auth;
	}
	public void setAuth(Boolean auth) {
		this.auth = auth;
	}
	public void setDbName(String dbName) {
		this.dbName = dbName;
	}
	public String getUserName() {
		return userName;
	}
	public void setUserName(String userName) {
		this.userName = userName;
	}
	public String getPassWord() {
		return passWord;
	}
	public void setPassWord(String passWord) {
		this.passWord = passWord;
	}
}

appconfig.properties配置文件的内容,配置数据库源信息

mongo.ip=160.0.0.243
mongo.port=27017
mongo.auth=true
mongo.user=ucenter
mongo.pwd=user2show
mongo.dbName=ucenter
此外,肯定还要把配置文件appconfig.properties导入到spring bean factory,也就是需要让datasource.java 知道去appconfig.properties 中找数据库配置信息

spring-servlet.xml

    <!-- 导入配置文件 -->
    <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">  
        <property name="locations">  
            <list>  
                <value>classpath:appconfig.properties</value>
            </list>  
        </property>  
    </bean>

这样做还不够,虽然知道了去那找数据库配置信息,但是,怎么获取数据库配置信息呢,还是在spring-servlet.xml里。 
    <!-- 数据源 -->
    <bean id="dataSource" class="com.ishowchina.user.dao.DataSource"><!-- 此处是和我们的数据库bean是对应关系 -->
    	<property name="ip" value="${mongo.ip}"/> <!-- 此处是去appconfig.properties里找关键字对应的数据库信息 -->
    	<property name="port" value="${mongo.port}"/> 
    	<property name="dbName" value="${mongo.dbName}"/> 
    	<property name="auth" value="${mongo.auth}"/>
    	<property name="userName" value="${mongo.user}"/> 
    	<property name="passWord" value="${mongo.pwd}"/> 
    </bean>
以上就是完全的相关配置,接下来我们就可以调用getCollection、OpenConnection等方法了
举个例子:
public DBObject getUserInfo(DBObject o) throws Exception{
		
		MongoClient mongoClient = dataSource.OpenConnection();
		DBCollection coll = dataSource.getCollection(mongoClient,tableName);//获取数据集userinfo
		//mongoClient.setWriteConcern(WriteConcern.JOURNALED);//Setting Write Concern
		BasicDBObject exp=new BasicDBObject("_id",0);//排除ID字段
		DBObject myDoc = coll.findOne(o,exp);
		
		dataSource.ReleaseConnection(mongoClient) ;//释放连接
		return myDoc;
	}
以上,大致流程就这样。。
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