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HomeDatabaseMysql Tutorial也谈用JSP实现新郎、sohu新闻系统的技术。_MySQL

  我这两天刚好完成了这样一个类似的系统,希望和大家探讨探讨jsp实现的技术。  
新浪 sohu这样的系统应该是类似的,就是后台动态生成前台的html页面,不管后台用什么工具。  
因为公司逼下来,要做这样的新闻系统,没有办法,连着做了两天,总算搞定了,很快就会发布到公司主页上面  
当然我只做了一个后台管理的东西,用jsp+javabean来动态生成html文件  
我是这样实现的  
1、首先要一个写好的htm文件模板,后台用Writer对象来写文件,然后几个需要替换的地方如新闻标题、新闻内容直接根据输入的来替换,文件名字就用日期如2000-12-18-1.htm类似的;  
2、文件上传用jspsmartupload组件,主要用来传新闻图片,然后将生成的图片路径替换模板中的img src标签;  
3、数据库中同时保存文件标题、文件名、日期等信息,新闻内容等其他的信息就没有必要保留了;  
4、前台调用直接从数据库中取XXX.htm文件名、文件标题就行了;  
另外还用了几个小技巧,因为jspsmartupload组件不支持文件上传重新命名,所以我设了一个临时的目录存放上传的图片文件,然后写了一个方法将文件通过IO操作拷贝到指定的目录下,当然名字也换成了和htm文件对应的名字。这样是为了防止文件以多名字相同了,一般都以日期或者自动增加变量等方式来命名。  
初步测试了一下,速度还比较快,因为新闻都是静态的htm文件。  
苦干了两天,今晚总算可以稍微休息一下了:)  
如果大家也用jsp做过类似的系统,欢迎一起交流了。  

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