整理的关于Java对mongodb进行的CURD操作工具类及源码
不爱说话爱技术，以下是我整理的关于对mongodb进行增删改查操作的一个工具类，恐有不足，向各位大拿们讨教。最后有一个源码及实现类和接口。
package com.iceter.DataBase;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.bson.Document;
import org.bson.conversions.Bson;
import org.junit.Test;
import com.mongodb.BasicDBObject;
import com.mongodb.DB;
import com.mongodb.MongoClient;
import com.mongodb.MongoCredential;
import com.mongodb.ServerAddress;
import com.mongodb.client.FindIterable;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoCursor;
import com.mongodb.client.MongoDatabase;
import com.mongodb.client.model.Filters;
import com.mongodb.client.model.InsertOneOptions;
import com.mongodb.client.result.DeleteResult;
import com.mongodb.client.result.UpdateResult;
/**
* 对mongodb的操作类
* @author ice
*
*/
public class IMongoJDBCUtilCJB{
private static IMongoJDBCUtilCJB mongoUtil;
private String address = "localhost";
private int port = 27017;
private String dataBase = "mycol";
private String collection = "mycol";
MongoClient mongoClient ;
MongoDatabase mongoDatabase ;
MongoCollection mongoCol ;
private void getMongoCon() {
mongoClient = new MongoClient( address , port );
mongoDatabase = mongoClient.getDatabase(dataBase);
mongoCol = mongoDatabase.getCollection(collection);
}
//单利
public static IMongoJDBCUtilCJB getInstance(String address,int port,String dataBase,String collection){
if (mongoUtil!=null) {
return mongoUtil;
}else {
return new IMongoJDBCUtilCJB(address,port,dataBase,collection);
}
}
/**
* 根据地址，数据库及连接名称连接到数据库
* @param address 数据库连接地址
* @param port 数据库端口
* @param dataBase 实例名
* @param collection 连接名
*/
public IMongoJDBCUtilCJB(String address,int port,String dataBase,String collection) {
this.address = address;
this.dataBase = dataBase;
this.collection = collection;
//实例化
getMongoCon();
}
/**
* 连接到数据库
* @return
*/
@Test
public boolean mongodbConTest() {
try{
// 连接到 mongodb 服务
MongoClient mongoClient = new MongoClient( address , port );
// 连接到数据库
MongoDatabase mongoDatabase = mongoClient.getDatabase(dataBase);
System.out.println("Connect to database successfully");
mongoDatabase.createCollection(collection);
return true;
}catch(Exception e){
System.err.println(e.getClass().getName() + "->" + e.getMessage());
return false;
}
}
/**
* 创建集合
*/
@Test
public void mongodbCreate() {
getMongoCon();
mongoDatabase.createCollection(collection);
}
/**
* 向mongodb添加数据
*/
@Test
public void mongdbAddDoc(Document doc) {
getMongoCon();
mongoCol.insertOne(doc);
}
/**
* 关闭mongodb连接
*/
@Test
public void mongoClose() {
getMongoCon();
mongoClient.close();
}
/**
* 根据固定条件向mongodb添加数据
*/
@Test
public void mongdbAddDocByOptions(Document doc,InsertOneOptions options) {
getMongoCon();
mongoCol.insertOne(doc, options);
}
/**
* 向mongodb添加多条数据
*/
@Test
public void mongdbAddDocs(List list) {
getMongoCon();
mongoCol.insertMany(list);
}
/**
* 向mongodb删除一条数据
* @param filter
* 查询条件 //注意Bson的几个实现类，BasicDBObject, BsonDocument,
* BsonDocumentWrapper, CommandResult, Document, RawBsonDocument
*/
@Test
public DeleteResult mougdbDel(BasicDBObject basic) {
getMongoCon();
Bson filter = basic;
DeleteResult dResult = mongoCol.deleteOne(filter);
return dResult;
}
/**
* 向mongodb删除多条数据
* @param filter
* 查询条件 //注意Bson的几个实现类，BasicDBObject, BsonDocument,
* BsonDocumentWrapper, CommandResult, Document, RawBsonDocument
*/
@Test
public DeleteResult mougdbDels(BasicDBObject basic) {
getMongoCon();
Bson filter = basic;
DeleteResult dResult = mongoCol.deleteMany(filter);
return dResult;
}
/**
* 向mongodb修改单条数据
* @param filter
* @param update
* @return
*/
@Test
public UpdateResult mongdbUpdateOne(Bson filter, Bson update) {
getMongoCon();
UpdateResult result = mongoCol.updateOne(filter, update);
return result;
}
/**
* 向mongodb修改单条数据
* @param filter
* @param update
* @return
*/
@Test
public UpdateResult mongdbUpdateMany(Bson filter, Bson update) {
getMongoCon();
UpdateResult result = mongoCol.updateMany(filter, update);
return result;
}
/**
* mongodb根据固定条件查询数据查询数据
*/
@Test
public List mongdbQuery(Bson bson) {
getMongoCon();
List array = new ArrayList<>();
FindIterable findy = mongoCol.find(bson);
MongoCursor cursor = findy.iterator();
while (cursor.hasNext()) {
array.add(cursor.next());
}
return array;
}
/**
* mongodb根据BasicDBObject中的固定条件查询数据查询数据
*/
@Test
public List mongdbQuery(BasicDBObject obj) {
getMongoCon();
List array = new ArrayList<>();
Bson bson = obj;
FindIterable findy = mongoCol.find(bson);
MongoCursor cursor = findy.iterator();
while (cursor.hasNext()) {
array.add(cursor.next());
}
return array;
}
/**
* 根据key和value值查询数据
* @param key 查询字段
* @param value 查询内容
* @return
*/
@Test
public List mongdbQuery(String key,Object value) {
getMongoCon();
List array = new ArrayList<>();
Bson bson = new BasicDBObject().append(key, value);
FindIterable findy = mongoCol.find(bson);
MongoCursor cursor = findy.iterator();
while (cursor.hasNext()) {
array.add(cursor.next());
}
return array;
}
/**
* 向mongodb查询所有数据
*/
@Test
public List mongdbQuerys() {
getMongoCon();
List array = new ArrayList<>();
FindIterable findAll = mongoCol.find();
MongoCursor corsor = findAll.iterator();
while (corsor.hasNext()) {
array.add(corsor.next());
}
return array;
}
/**
* 通过用户名密码登录(待测试)
*/
@Test
public void getConUsePass(){
try {
//连接到MongoDB服务 如果是远程连接可以替换“localhost”为服务器所在IP地址
//ServerAddress()两个参数分别为 服务器地址 和 端口
ServerAddress serverAddress = new ServerAddress(address,27017);
List addrs = new ArrayList();
addrs.add(serverAddress);
//MongoCredential.createScramSha1Credential()三个参数分别为 用户名 数据库名称 密码
MongoCredential credential = MongoCredential.createScramSha1Credential("username", "databaseName", "password".toCharArray());
List credentials = new ArrayList();
credentials.add(credential);
//通过连接认证获取MongoDB连接
MongoClient mongoClient = new MongoClient(addrs,credentials);
//连接到数据库
MongoDatabase mongoDatabase = mongoClient.getDatabase("databaseName");
System.out.println("Connect to database successfully");
} catch (Exception e) {
System.err.println(e.getClass().getName() + "->" + e.getMessage());
}
}
/**
* 测试类，仅供测试使用
*/
@Test
public void mongodbTest() {
try{
}catch(Exception e){
System.err.println(e.getClass().getName() + "->" + e.getMessage());
}
}
/**
*
* @param args
*/
public static void main( String args[] ){
IMongoJDBCUtilCJB util = IMongoJDBCUtilCJB.getInstance("localhost", 27010, "database", "mycol");
// IMongoJDBCUtil util = new IMongoJDBCUtil(address, 27010, "database", dataBase);
// util.mongoClose();
//
// DeleteResult d = util.mougdbDel(new BasicDBObject().append("age", 200));
// System.out.println(d.getDeletedCount());
util.mongodbTest();
}
} 源码下载地址：点击打开链接