java操作mongo工具类
package Utils;
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.result.UpdateResult;
import org.apache.commons.lang3.StringUtils;
import org.apache.log4j.Logger;
import org.bson.Document;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
public class MongoDBUtil {
private static MongoDBUtil mongoDBUtil;
private static final String PLEASE_SEND_IP = "没有传入ip或者端口号";
private static final String PLEASE_INSTANCE_MONGOCLIENT = "请实例化MongoClient";
private static final String PLEASE_SEND_MONGO_REPOSITORY = "请指定要删除的mongo库";
private static final String DELETE_MONGO_REPOSITORY_EXCEPTION = "删除mongo库异常";
private static final String DELETE_MONGO_REPOSITORY_SUCCESS = "批量删除mongo库成功";
private static final String NOT_DELETE_MONGO_REPOSITORY = "未删除mongo库";
private static final String DELETE_MONGO_REPOSITORY = "成功删除mongo库：";
private static final String CREATE_MONGO_COLLECTION_NOTE = "请指定要创建的库";
private static final String NO_THIS_MONGO_DATABASE = "未找到指定mongo库";
private static final String CREATE_MONGO_COLLECTION_SUCCESS = "创建mongo库成功";
private static final String CREATE_MONGO_COLLECTION_EXCEPTION = "创建mongo库错误";
private static final String NOT_CREATE_MONGO_COLLECTION = "未创建mongo库collection";
private static final String CREATE_MONGO_COLLECTION_SUCH = "创建mongo库collection：";
private static final String NO_FOUND_MONGO_COLLECTION = "未找到mongo库collection";
private static final String INSERT_DOCUMEN_EXCEPTION = "插入文档失败";
private static final String INSERT_DOCUMEN_SUCCESSS = "插入文档成功";
private static final Logger logger = Logger.getLogger(MongoDBUtil.class);
private MongoDBUtil(){
}
private static class SingleHolder{
private static MongoDBUtil mongoDBUtil = new MongoDBUtil();
}
public static MongoDBUtil instance(){
return SingleHolder.mongoDBUtil;
}
public static MongoDBUtil getMongoDBUtilInstance(){
if(mongoDBUtil == null){
return new MongoDBUtil();
}
return mongoDBUtil;
}
/**
* 获取mongoDB连接
* @param host
* @param port
* @return
*/
public MongoClient getMongoConnect(String host,Integer port){
if(StringUtils.isBlank(host) || null == port){
logger.error(PLEASE_SEND_IP);
return null;
}
return new MongoClient(host, port);
}
/**
* 批量删除mongo库
* @param mongoClient
* @param dbNames
* @return
*/
public String bulkDropDataBase(MongoClient mongoClient,String...dbNames){
if(null == mongoClient) return PLEASE_INSTANCE_MONGOCLIENT;
if(null==dbNames || dbNames.length==0){
return PLEASE_SEND_MONGO_REPOSITORY;
}
try {
Arrays.asList(dbNames).forEach(dbName -> mongoClient.dropDatabase(dbName));
logger.info(DELETE_MONGO_REPOSITORY_SUCCESS);
}catch (Exception e){
e.printStackTrace();
logger.error(DELETE_MONGO_REPOSITORY_EXCEPTION);
}
return dbNames == null ? NOT_DELETE_MONGO_REPOSITORY:DELETE_MONGO_REPOSITORY + String.join(",",dbNames);
}
/**
* 创建指定database的collection
* @param mongoClient
* @param dbName
* @param collections
* @return
*/
public String createCollections(MongoClient mongoClient,String dbName,String...collections){
if(null == mongoClient) return PLEASE_INSTANCE_MONGOCLIENT;
if(null==collections || collections.length==0){
return CREATE_MONGO_COLLECTION_NOTE;
}
MongoDatabase mongoDatabase = mongoClient.getDatabase(dbName);
if(null == mongoDatabase) return NO_THIS_MONGO_DATABASE;
try {
Arrays.asList(collections).forEach(collection -> mongoDatabase.createCollection(collection));
logger.info(CREATE_MONGO_COLLECTION_SUCCESS);
return collections == null ? NOT_CREATE_MONGO_COLLECTION:CREATE_MONGO_COLLECTION_SUCH + String.join(",",collections);
}catch (Exception e){
e.printStackTrace();
logger.error(CREATE_MONGO_COLLECTION_EXCEPTION);
}
return null;
}
/**
* 获取MongoCollection
* @param mongoClient
* @param dbName
* @param collection
* @return
*/
public MongoCollection<Document> getMongoCollection(MongoClient mongoClient,String dbName,String collection){
if(null == mongoClient) return null;
if(StringUtils.isBlank(dbName)) return null;
if(StringUtils.isBlank(collection)) return null;
MongoDatabase mongoDatabase = mongoClient.getDatabase(dbName);
MongoCollection<Document> collectionDocuments = mongoDatabase.getCollection(collection);
if(null == collectionDocuments) return null;
return collectionDocuments;
}
/**
* 获取到MongoClient
* @param ip
* @param port
* @param userName
* @param dbName
* @param psw
* @returnMongoClient
*/
public static MongoClient getMongoClientByCredential(String ip,int port,String userName,String dbName,String psw){
ServerAddress serverAddress = new ServerAddress(ip,port);
List<ServerAddress> addrs = new ArrayList<ServerAddress>();
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, dbName, psw.toCharArray());
List<MongoCredential> credentials = new ArrayList<MongoCredential>();
credentials.add(credential);
//通过连接认证获取MongoDB连接
MongoClient mongoClient = new MongoClient(addrs,credentials);
return mongoClient;
}
/**
* 插入文档数据
* @param mongoCollection
* @param params
*/
public void insertDoucument(final MongoCollection<Document> mongoCollection, final Map<String,Object> params){
if(null == mongoCollection) {
logger.info(NO_FOUND_MONGO_COLLECTION);
return;
}
try {
Document document = new Document();
params.keySet().stream().forEach(field -> document.append(field, params.get(field)));
List<Document> documents = new ArrayList<>();
documents.add(document);
mongoCollection.insertMany(documents);
logger.info(INSERT_DOCUMEN_SUCCESSS);
}catch (Exception e){
e.printStackTrace();
logger.error(INSERT_DOCUMEN_EXCEPTION);
}
}
/**
* 更新文档
* @param mongoCollection
* @param conditionParams
* @param updateParams
*/
public void updateDocument(final MongoCollection<Document> mongoCollection,final Map<String,Object> conditionParams,
final Map<String,Object> updateParams,final boolean MultiUpdate
){
if(null == mongoCollection) return;
if (null == conditionParams) return;
if (null == updateParams) return;
Document conditonDocument = new Document();
conditionParams.keySet().stream().filter(p -> null != p).forEach(o -> {
conditonDocument.append(o,conditionParams.get(o));
});
Document updateDocument = new Document();
updateParams.keySet().stream().filter(p -> null != p).forEach(o -> {
updateDocument.append(o,updateParams.get(o));
});
UpdateResult updateResult = null;
if (MultiUpdate){//是否批量更新
updateResult = mongoCollection.updateMany(conditonDocument,new Document("$set",updateDocument));
}else {
updateResult = mongoCollection.updateOne(conditonDocument,new Document("$set",updateDocument));
}
System.out.println("修改了："+updateResult.getModifiedCount()+" 条数据 ");
}
/**
*条件 删除文档 是否多条删除
* @param mongoCollection
* @param multiple
* @param conditionParams
* @return
*/
public long deleteDocument(final MongoCollection<Document> mongoCollection,final boolean multiple,
final Map<String,Object> conditionParams){
if(null == mongoCollection) return 0;
if(null == conditionParams) return 0;
Document document = new Document();
conditionParams.keySet().stream().filter(p -> null != p).forEach(o -> {
document.append(o,conditionParams.get(o));
});
if(multiple) {
return mongoCollection.deleteMany(document).getDeletedCount();
}
//删除文档第一条
return mongoCollection.deleteOne(document).getDeletedCount();
}
/**
* 查询文档 带条件、范围查找、排序、分页
* @param mongoCollection
* @param conditionParams
* @param limit
* @param skip
* @param sortParams
*/
public FindIterable<Document> queryDocument(final MongoCollection<Document> mongoCollection, final Map<String,Object> conditionParams,
final String op,final String compareField, final Map<String,Integer> gtLtOrOtherParams,
final Map<String,Object> sortParams,final Integer skip,final Integer limit
){
if(null == mongoCollection) return null;
FindIterable<Document> findIterable = mongoCollection.find();
Document conditionDocument = new Document();
Document compareDocument = new Document();
if(null != conditionParams && null != findIterable){
conditionParams.forEach((k,v) ->{
if (StringUtils.isNotBlank(k)) {
conditionDocument.append(k,v);
}
});
findIterable = findIterable.filter(conditionDocument);
MongoCursor<Document> mongoCursor = findIterable.iterator();
while(mongoCursor.hasNext()){
System.out.println("条件过滤 -->"+mongoCursor.next());
}
}
if(null != findIterable && null != gtLtOrOtherParams){
Document gtOrLtDoc = new Document();
gtLtOrOtherParams.forEach((k,v) -> {
if(StringUtils.isNotBlank(k)) gtOrLtDoc.append(k,v);
});
compareDocument = new Document(compareField,gtOrLtDoc);
findIterable = findIterable.filter(new Document(compareField,compareDocument));
}
if (StringUtils.isNotBlank(op)){
if ("and".equals(op)){
findIterable = mongoCollection.find(Filters.and(conditionDocument,compareDocument));
}else if("or".equals(op)){
findIterable = mongoCollection.find(Filters.or(conditionDocument,compareDocument));
}else if("not".equals(op)){//排除范围
findIterable = mongoCollection.find(Filters.and(conditionDocument,Filters.not(compareDocument)));
}
}else{//默认是AND查询
findIterable = mongoCollection.find(Filters.and(conditionDocument,compareDocument));
}
MongoCursor<Document> mongoCursor3 = findIterable.iterator();
while(mongoCursor3.hasNext()){
System.out.println(op+"过滤 -->"+mongoCursor3.next());
}
if(null != sortParams){
Document sortDocument = new Document();
sortParams.forEach((k,v) ->{
if (StringUtils.isNotBlank(k)) {
sortDocument.append(k,v);
}
});
findIterable = findIterable.sort(sortDocument);
MongoCursor<Document> mongoCursor2 = findIterable.iterator();
while(mongoCursor2.hasNext()){
System.out.println("排序 -->"+mongoCursor2.next());
}
}
if(null != findIterable && null != limit){
findIterable = findIterable.limit(limit);
}
if(null != findIterable && null != skip){
findIterable = findIterable.skip(skip);
}
return findIterable;
}
/**
* in查询
* @param mongoCollection
* @return
*/
public FindIterable<Document> queryDocumentIn(final MongoCollection<Document> mongoCollection,String field, List<String> list
){
if(null == mongoCollection) return null;
FindIterable<Document> findIterable = mongoCollection.find(new Document(field,new Document("$in",list)));
return findIterable;
}
/**
* 全文查询
* @param mongoCollection
* @return
*/
public FindIterable<Document> queryDocument(final MongoCollection<Document> mongoCollection
){
if(null == mongoCollection) return null;
FindIterable<Document> findIterable = mongoCollection.find();
return findIterable;
}
/**
* 查询文档 简单条件查询
* @param mongoCollection
* @param conditionParams
* @return
*/
public FindIterable<Document> queryDocument(final MongoCollection<Document> mongoCollection, final Map<String,Object> conditionParams
){
if(null == mongoCollection) return null;
FindIterable<Document> findIterable = mongoCollection.find();
if(null == conditionParams || null == findIterable) return findIterable;
Document document = new Document();
conditionParams.forEach((k,v)->{
if (StringUtils.isNotBlank(k)) {
document.append(k,v);
}
});
findIterable = findIterable.filter(document);
return findIterable;
}
/**
* 用于输出部分的列信息
* @param documents
*/
public static void printDocuments(FindIterable<Document> documents, String[] fields) {
if (fields != null && fields.length > 0) {
int num = 0;
for (Document d : documents) {
StringBuilder stringBuilder = new StringBuilder();
for (int i = 0; i < fields.length; i++) {
/*if(fields[i].equals("catm")){
}*/
stringBuilder.append(fields[i] + ": "+d.getString(fields[i])+" ");
}
System.out.println("第" + (++num) + "条数据： " + stringBuilder);
}
}else{
for (Document d : documents) {
System.out.println(d.toString());
}
}
}
/**
* 用于输出所有的列信息
* @param documents
*/
public void printDocuments(FindIterable<Document> documents) {
int num = 0;
for (Document d : documents) {
System.out.println("第" + (++num) + "条数据： " + d.toString());
}
}
}
mongo用到的比较常量定义
public enum MongoConst {
GT("$gt"),
LT("$lt"),
GTE("$gte"),
LTE("$lte"),
AND("and"),
OR("or"),
NOT("not");
private String compareIdentify;
MongoConst(String compareIdentify) {
this.compareIdentify = compareIdentify;
}
public String getCompareIdentify() {
return compareIdentify;
}
}
工具类的测试类
package test;
import Utils.MongoConst;
import Utils.MongoDBUtil;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import com.mongodb.MongoClient;
import com.mongodb.client.FindIterable;
import com.mongodb.client.MongoCollection;
import org.bson.Document;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class MongoTest02 {
public static void main(String[] args) {
MongoDBUtil mongoDBUtil = MongoDBUtil.getMongoDBUtilInstance();
MongoClient meiyaClient = mongoDBUtil.getMongoClientByCredential("127.0.0.1",27017,"my","my","my");
try {
MongoCollection<Document> collection = mongoDBUtil.getMongoCollection(meiyaClient,"test","hobby");
Map<String,Object> insert = new HashMap<>();
//1、测试增加
/* insert.put("name","zy");
insert.put("age","12");
insert.put("date","2018-04-02T09:44:02.658+0000");
insert.put("school","厦门理工");
mongoDBUtil.insertDoucument(collection,insert);*/
//2、测试条件、范围、排序查询
/* Map<String,Object> conditions = Maps.newHashMap();
conditions.put("name","张元");
Map<String,Integer> compares = Maps.newHashMap();
compares.put(MongoConst.GT.getCompareIdentify(),20);
compares.put(MongoConst.LTE.getCompareIdentify(),28);
String opAnd = MongoConst.AND.getCompareIdentify();
Map<String,Object> sortParams = Maps.newHashMap();
sortParams.put("age",-1);
FindIterable<Document> documents = mongoDBUtil.queryDocument(collection,null,opAnd,"age",compares,sortParams,null,2);
mongoDBUtil.printDocuments(documents);*/
//3、in查询
/*List<String> names = Lists.newArrayList("张媛","zy","zyy");
FindIterable<Document> documents = mongoDBUtil.queryDocumentIn(collection,"name",names);
mongoDBUtil.printDocuments(documents);*/
//4 批量删除
/*Map<String,Object> conditionParams = Maps.newHashMap();
conditionParams.put("school","厦门理工");
long count = mongoDBUtil.deleteDocument(collection,true,conditionParams);
System.out.println(count);*/
//更新
Map<String,Object> queryParams = Maps.newHashMap();
queryParams.put("school","修改了学校");
Map<String,Object> updateParams = Maps.newHashMap();
updateParams.put("name","修改了名字");
mongoDBUtil.updateDocument(collection,queryParams,updateParams,false);
} catch (Exception e) {
System.err.println(e.getClass().getName() + ": " + e.getMessage());
}
}
}
原文地址：https://www.cnblogs.com/zyxs/p/9106358.html
时间： 2024-11-09 01:02:51