MongoDB——JDBC

    下面是最近项目中用的针对于MongoDB数据库封装的JDBC，先做一个大概的了解，关于用法，下一篇博文将详细介绍

-import java.util.ArrayList;import java.util.Arrays;import java.util.List;import com.mongodb.MongoClient;import com.mongodb.MongoClientOptions;import com.mongodb.MongoCredential;import com.mongodb.ServerAddress;import com.mongodb.client.MongoDatabase;public class MongoJdbc {/** 客户端连接池 */private static MongoClient mongoClient;/** 线程安全的数据库链接 */private static MongoDatabase mongoDatabase = null;/** 服务器信息 */private String repset;/** 数据库信息 */private String database;/** 用户名 */private String user;/** 密码 */private String password;/** 单个host允许链接的最大链接数 */private String connectionsPerHost;/** 线程队列数 */private String threadsAllowedToBlockForConnectionMultiplier;public void setRepset(String repset) {this.repset = repset;}public void setDatabase(String database) {this.database = database;}public void setUser(String user) {this.user = user;}public void setPassword(String password) {this.password = password;}public void setConnectionsPerHost(String connectionsPerHost) {this.connectionsPerHost = connectionsPerHost;}public void setThreadsAllowedToBlockForConnectionMultiplier(String threadsAllowedToBlockForConnectionMultiplier) {this.threadsAllowedToBlockForConnectionMultiplier = threadsAllowedToBlockForConnectionMultiplier;}private void init() {List<ServerAddress> serverAddressList = new ArrayList<ServerAddress>();if (this.repset == null || "".equals(this.repset)) {throw new MongodbException("未配置ip地址和端口号！");}if (this.connectionsPerHost == null || "".equals(this.connectionsPerHost)) {throw new MongodbException("未配置单个host允许链接的最大链接数！");}if (this.threadsAllowedToBlockForConnectionMultiplier == null || "".equals(this.threadsAllowedToBlockForConnectionMultiplier)) {throw new MongodbException("未配置线程队列数！");}if (this.user == null || "".equals(this.user)) {throw new MongodbException("未配置用户名！");}if (this.password == null || "".equals(this.password)) {throw new MongodbException("未配置密码！");}if (this.database == null || "".equals(this.database)) {throw new MongodbException("未配置库名！");}String[] hostPorts = this.repset.split(",");for (int i = 0; i < hostPorts.length; i++) {String[] hostPortArr = hostPorts[i].split(":");if (hostPortArr.length != 2) {throw new MongodbException("mongodb主机配置异常");}String host = hostPortArr[0];String port = hostPortArr[1];ServerAddress serverAddress = new ServerAddress(host, Integer.parseInt(port));serverAddressList.add(serverAddress);}MongoClientOptions mongoClientOptions = new MongoClientOptions.Builder().connectionsPerHost(Integer.parseInt(this.connectionsPerHost)).threadsAllowedToBlockForConnectionMultiplier(Integer.parseInt(this.threadsAllowedToBlockForConnectionMultiplier)).build();MongoCredential credential = MongoCredential.createCredential(this.user, this.database, this.password.toCharArray());mongoClient = new MongoClient(serverAddressList, Arrays.asList(credential), mongoClientOptions);mongoDatabase = mongoClient.getDatabase(database);}public MongoDatabase getMongodb() {if (null == mongoDatabase) {init();}return mongoDatabase;}}-