mongodb工具类
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pom.xml文件增加Mongodb jar包
<dependency>
<groupId>org.mongodb</groupId>
<artifactId>mongo-java-driver</artifactId>
<version>3.4.0</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-mongodb</artifactId>
<version>1.10.3.RELEASE</version>
</dependency>
src/main/resources下增加mongodb.properties
mongoip=127.0.0.1 mongoport=27017 mongodatabase=VulnSubmit connections_per_host=10 max_wait_time=120000 connect_timeout=0 mongo_user=sysadmin mongo_pass=simple123456
Mongodb工具类
package com.vulnverify.core.utils;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;
import java.util.UUID;
import javax.validation.constraints.Null;
import org.bson.types.ObjectId;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.mongodb.MongoClient;
import com.mongodb.MongoClientOptions;
import com.mongodb.MongoCredential;
import com.mongodb.ServerAddress;
import com.mongodb.client.MongoDatabase;
import com.mongodb.client.gridfs.GridFSBucket;
import com.mongodb.client.gridfs.GridFSBuckets;
import com.mongodb.client.model.Filters;
/**
* MongoDB 工具类
* 方便进行文件的上传与下载
* 共提供上传、下载、删除文件工具类
*
* @author linan
* @since 20170517
*/
public class GeneralMongoDbUtil {
private final static Properties PROPERTIES = new Properties();
private final static Logger logger = LoggerFactory.getLogger(GeneralMongoDbUtil.class);
static {
try {
URL url = GeneralMongoDbUtil.class.getClassLoader().getResource("mongodb.properties");
if (url != null) {
logger.info("Found ‘mongodb.properties‘ file in local classpath");
InputStream inputStream = url.openStream();
try {
PROPERTIES.load(inputStream);
} catch (Exception e) {
e.printStackTrace();
} finally {
inputStream.close();
}
}
} catch (IOException e) {
e.printStackTrace();
logger.info("Could not load ‘mongo_db.properties‘ file from local classpath: " + e);
}
}
public GeneralMongoDbUtil() {
}
private static class Config {
/**
* MongoDB connection properties
*/
public static String ip = null;
public static int port = 27017;
public static String database = null;
/**
* MongoDB connection pool properties
*/
public static int connectionsPerHost = 10;
public static int maxWaitTime = 120000;
public static int connectTimeout = 0;
public static boolean socketKeepAlive = true;
public static int socketTimeout = 150000;
public static MongoClientOptions mongoClientOptions = null;
/**
* 用户及凭证
*/
public static List<MongoCredential> credentialList = new ArrayList<MongoCredential>();
static {
ip = PROPERTIES.getProperty("mongoip");
port = Integer.parseInt(PROPERTIES.getProperty("mongoport"));
database = PROPERTIES.getProperty("mongodatabase");
connectionsPerHost = Integer.parseInt(PROPERTIES.getProperty("connections_per_host"));
maxWaitTime = Integer.parseInt(PROPERTIES.getProperty("max_wait_time"));
connectTimeout = Integer.parseInt(PROPERTIES.getProperty("connect_timeout"));
socketKeepAlive = true;
socketTimeout = 150000;
mongoClientOptions = MongoClientOptions.builder()
.connectTimeout(connectTimeout)
.maxWaitTime(maxWaitTime)
.connectionsPerHost(connectionsPerHost)
.socketKeepAlive(socketKeepAlive)
.socketTimeout(socketTimeout)
.build();
/**
* 认证与凭证
*
*/
MongoCredential credential = MongoCredential.createCredential(
PROPERTIES.getProperty("mongo_user"), database,
PROPERTIES.getProperty("mongo_pass").toCharArray());
credentialList.add(credential);
}
}
private static final class MongoInstance {
public final static MongoClient client;
static {
// client = new MongoClient(new ServerAddress(Config.ip,
// Config.port), Config.credentialList, Config.mongoClientOptions);
client = new MongoClient(new ServerAddress(Config.ip, Config.port), Config.mongoClientOptions);
}
}
/**
* destroy pool
*/
public static final void destroy() {
MongoInstance.client.close();
}
/**
* get a MongoDatabase
*
* @return
*/
public static MongoDatabase getDatabase() {
return MongoInstance.client.getDatabase(Config.database);
}
public static MongoDatabase getGridFsDatabase() {
return MongoInstance.client.getDatabase("gridfs");
}
/**
* get a MongoDatabase by Name
*
* @param databaseName
* @return
*/
public static MongoDatabase getDatabase(String databaseName) {
return MongoInstance.client.getDatabase(databaseName);
}
// //////////////////以下为上传内容//////////////////////////////
/**
* 上传文件 到 MongoDB
*
* @param destinationName
* @param inputStream
* @return
*/
public static String uploadFileToGridFS(String destinationName, InputStream inputStream, String bucketName) {
/**
* 缺省桶名是 fs
*/
GridFSBucket bucket = GridFSBuckets.create(getDatabase(), bucketName);
ObjectId fileId = bucket.uploadFromStream(destinationName, inputStream);
return fileId.toHexString();
}
/**
* 上传文件 到 MongoDB，可以选择关闭流
*
* @param destinationName
* @param inputStream
* @param close
* @return
*/
public static String uploadFileToGridFS(String destinationName, InputStream inputStream, String bucketName, boolean close) {
String fileId = null;
try {
fileId = uploadFileToGridFS(destinationName, inputStream, bucketName);
} finally {
if (close) {
try {
inputStream.close();
} catch (IOException e) {
logger.info("close inputstream fail:" + e);
}
}
}
return fileId;
}
/**
* 上传文件 到 MongoDB，参数为 File
*
* @param destinationName
* @param file
* @return
*/
public static String uploadFileToGridFs(String destinationName, File file, String bucketName) {
InputStream inputStream = null;
try {
inputStream = new FileInputStream(file);
String fileId = uploadFileToGridFS(destinationName, inputStream, bucketName, true);
return fileId;
} catch (IOException e) {
logger.info("upload fail:" + e);
}
return null;
}
/**
* 上传文件 到 MongoDB，文件名不变上传
*
* @param file
* @return
*/
public static String uploadFileToGridFs(File file, String bucketName) {
return uploadFileToGridFs(file.getName(), file, bucketName);
}
/**
* 上传文件 到 MongoDB，文件名加入UUID
*
* @param file
* @return
*/
public static String uploadFileToGridFSByUUID(File file, String bucketName) {
return uploadFileToGridFs(UUID.randomUUID().toString(), file, bucketName);
}
// //////////////////以下为下载内容//////////////////////////////
/**
* 通过 文件名 从MongoDB 下载文件
*
* @param sourceName
* @param outputStream
*/
public static void downloadFileByName(String sourceName, OutputStream outputStream, String bucketName) {
GridFSBucket bucket = GridFSBuckets.create(getDatabase(), bucketName);
bucket.downloadToStream(sourceName, outputStream);
}
/**
* 通过 objectid 从MongoDB 下载文件
*
* @param objectId
* @param outputStream
*/
public static void downloadFile(String objectId, OutputStream outputStream, String bucketName) {
/**
* 缺省桶名是 fs
*/
GridFSBucket bucket = GridFSBuckets.create(getDatabase(), bucketName);
bucket.downloadToStream(new ObjectId(objectId), outputStream);
}
/**
* 从mongodb获取文件名称
* @param objectId
* @param outputStream
* @param 文件名称
*/
public static String getFileName(String objectId, String bucketName) {
GridFSBucket bucket = GridFSBuckets.create(getDatabase(), bucketName);
String fileName = bucket.find(Filters.eq("_id",new ObjectId(objectId))).first().getFilename();
return fileName;
}
/**
* 通过 objectid 从MongoDB 下载文件
*
* @param objectId
* @param outputStream
*/
public static String downloadTaskResultFile(String objectId, OutputStream outputStream) {
/**
* 缺省桶名是 fs
*/
GridFSBucket bucket = GridFSBuckets.create(getGridFsDatabase(), "bucketme");
String fileName = bucket.find(Filters.eq("_id",new ObjectId(objectId))).first().getFilename();
bucket.downloadToStream(new ObjectId(objectId), outputStream);
return fileName;
}
/**
* 通过 objectid 从MongoDB 下载文件
*
* @param objectId
* @param destinationFile
*/
public static void downloadFile(String objectId, File destinationFile, String bucketName) {
OutputStream outputStream = null;
try {
outputStream = new FileOutputStream(destinationFile);
downloadFile(objectId, outputStream, bucketName);
} catch (IOException e) {
logger.info("download fail:" + e);
} finally {
if (outputStream != null) {
try {
outputStream.close();
} catch (IOException e) {
logger.info("close outputstream fail:" + e);
}
}
}
}
/**
* 通过 objectid 从MongoDB 下载文件
*
* @param objectId
* @param destinationName
*/
public static void downloadFile(String objectId, String destinationName, String bucketName) {
File destinationFile = new File(destinationName);
downloadFile(objectId, destinationFile, bucketName);
}
/**
* 通过 objectId 从MongoDB 删除文件
*
* @param objectId
*/
public static void deleteByObjectId(String objectId, String bucketName) {
GridFSBucket bucket = GridFSBuckets.create(getDatabase(), bucketName);
bucket.delete(new ObjectId(objectId));
}
}
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