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javamongodb代码
javamongodb代码
MongoDB最简单的入门教程之三 使用Java代码往MongoDB里插入数据
前两篇教程我们介绍了如何搭建MongoDB的本地环境: MongoDB最简单的入门教程之一 环境搭建 以及如何用nodejs读取MongoDB里的记录: MongoDB最简单的入门教程之二 使用nodejs访问MongoDB 这篇教程我们会介绍如何使用Java代码来连接MongoDB。 如果您是基于Maven进行依赖管理的Java项目,只需要在您的pom.xml里加入下面的依赖定义, <...
mongodb命令行group分组和java代码中group分组
group分组统计是数据库比较常用的功能,mongodb也不例外。不过相对于普通的增删改查,group操作就略微麻烦一些, 这里对group在shell中的操作、使用java原生代码操作以及集成spring进行操作进行一个简单的归纳总结,分组的途径和方法应该都有多种,这里每一样只举一例。 本例中数据源如下: 需要使用group实现的目的是:按年龄分组统计出每一组的数量。 1、mon...
mongodb3.0分片及java代码连接操作测试(开启用户验证)
最近抽时间搭建了一下mongodb简单的分片,整个过程还算是蛮顺利,只不过在用户验证这一块遇到了一些问题,好在最后终于搞定。 一、服务器搭建过程: 1、安装四个mongodb:一个作为config、一个作为mongos、另外两个作为主要数据存储的服务器(机器ip192.168.0.201),如图: 分别对应图中被红框框起来的mongoconf、mongos、mongo1、mongo...
使用mongo-java-driver3.0.2.jar和mongodb3.0在java代码中的用户验证4
以下是使用mongo-java-driver3.0.2.jar和mongodb3.0.4在java代码中的用户验证: ServerAddress sa = new ServerAddress(host, port); List<MongoCredential> mongoCredentialList = new ArrayList<MongoCredential>();...
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Dragonwell
Alibaba Dragonwell 是一款免费的, 生产就绪型Open JDK 发行版,提供长期支持,包括性能增强和安全修复。完全兼容 Java SE 标准,您可以在任何常用操作系统(包括 Linux、Windows 和 macOS)上开发 Java 应用程序。
立即下载
了解更多
开发者必备
必备 IDE 插件
应用托管平台
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Dragonwell
Alibaba Dragonwell 是一款免费的, 生产就绪型Open JDK 发行版,提供长期支持,包括性能增强和安全修复。完全兼容 Java SE 标准,您可以在任何常用操作系统(包括 Linux、Windows 和 macOS)上开发 Java 应用程序。
立即下载
了解更多
开发者必备
必备 IDE 插件
应用托管平台