chapter-03

北大青鸟使用MVC开发租房系统Struts + servlet +jsp(Beida Jade Bird rent system developed using the MVC Struts+ servlet+ jsp)

说明：  将labview里的串口数据保存为txt文档的操作(save data to txt inlabview)

java,Blob字段操作,将图片或者文件保存到数据库中(java, Blob field operations, it will preserve photographs or documents to the database)

分布式温控系统基本要求 1. 中央空调是冷暖两用，但一次只能使用一种温控装置。当设置为供暖时，供暖温度控制在25°C～30°C之间，当设置为制冷时，制冷温度控制在18°C～25°C之间。 2. 中央空调具备开关按钮，只可人工开启和关闭，中央空调开启后处于待机状态。当关闭后，不响应来自房间的任何温控请求。当有来自从控机的温控要求时，中央空调开始工作。当所有房间都没有温控要求时，中央空调的状态回到待机状态。 3. 房间内有独立的从控空调机，但没有冷暖控制设备。从控机具有一个传感器，实时监测房间的温度，并与从控机的目标设置温度进行对比，决定是否需要制冷或制热，并向中央空调机发出请求。如果从控机发出的请求和中央空调设置的冷暖控制状态发生矛盾时，以中央空调机的状态优先，即中央空调机不予响应。 4. 从控机只能人工方式开闭，并通过控制面板设置目标温度，目标温度有上下限制。所有房间的初始目标温度由中央空调机设置，每个房间的空调机开启时要读取中央空调机预置的房间温度。温度升降范围应该在目标温度的上下1 °C。房间不考虑大小和管道的分布及大小问题，在达到目标温度后，房间的温度每分钟上下变化0.1°C。 (Basic requirements of a distributed temperature control system 1. Central air conditioning is the well-being of dual-use, but can only use a thermostat device. When set to heating, the heating temperature at 25 ° C ~ 30 ° C, and when set to cooling, the cooling temperature at 18 ° C ~ 25 ° C between. 2. Central air conditioning with switch buttons can only be manually opened and closed, central air-conditioning turned on in standby mode. When closed, do not respond to a request from the room of any thermostat. When the machine from temperature control from the control requirements, central air-conditioning work. When all rooms are no thermostat demand, central air condition back to standby. 3. Room independent from the control air conditioning, but no climate-control equipment. From the control machine with a sensor, real-time monitoring the temperature of the room, and with the goal set from the control unit compares the temperature to determine the need for cooling or he)

java手机开发编程语言java2me范例，绘制sin函数。(java programming language java2me mobile development paradigm, drawing sin function.)

《Java解惑》中文版，Java学习进阶必备。("Java doubts," the Chinese version, Java Advanced Learning essential.)

比较好的考试学习系统，可以下载用来学习JAVA编程。(relatively good learning examination system, can be downloaded for learning Java programming.)

Frank-Wolfe算法的实现，给出小网络为例子进行验证。(Frank-Wolfe algorithm to verify that the small network is given as an example.)

一个简单的P2P即时聊天系统，实现功能如下： 1) 点对点的单人聊天 2) 多人同时聊天 3) 用户可以自由加入和退出

一款可以实现了百度地图定位和规划功能，该功能很简单，而且又很容易上手，当我们在百度地图的定位后，然后指定一个终点，从可以在当前位置路线规划等功能，喜欢的朋友可以研究一下看看。(A can achieve the function of Baidu map positioning and planning, the function is very simple, and very easy to get started, when we in Baidu map of the location, and then specify a destination, in the current position of route planning and other functions, like a friend can look at to see.)