JSP/JAVA 编程参考

第1条  How to Write an Equality Method in Java  
http://www.artima.com/lejava/articles/equality.html
How to Write an Equality Method in Java
by Martin Odersky, Lex Spoon, and Bill Venners
June 1, 2009
Summary
This article describes a technique for overriding the equals method that preserves the contract of equals even when subclassses of concrete classes add new fields.
In Item 8 of Effective Java1, Josh Bloch describes the difficulty of preserving the equals contract when subclassing as a “fundamental problem of equivalence relations in object-oriented languages.” Bloch writes:
There is no way to extend an instantiable class and add a value component while preserving the equals contract, unless you are willing to forgo the benefits of object-oriented abstraction.
Chapter 28 of Programming in Scala shows an approach that allows subclasses to extend an instantiable class, add a value component, and nevertheless preserve the equals contract. Although in the technique is described in the book in the context of defining Scala classes, it is also applicable to classes defined in Java. In this article, we present the technique using text adapted from the relevant section of Programming in Scala, but with the code examples translated from Scala into Java.
第2条 jsp使用URL编码传递中文参数问题
http://blog.csdn.net/jxcjxinxing/archive/2007/12/30/1469924.aspx
Jsp页面使用URL编码传递中文参数的情况下，在参数的解析过程中会出现乱码。由于java在设计的时候考虑到了国际化的问题，在java源程序编译成字节码的时候默认使用的是UTF-8编码。而在web运用上，由于不同的浏览器向服务器发送的信息采用的编码方式不同，在由像tomcat之类的服务器解码的时候会由于编码方式的不同而产生乱码，这是一个会困扰jsp初学者很久的问题。
举例说明：
    String sContent = "中文 参数";
    如果不做任何处理就直接传递，中文也许没有问题（但不保证），但空格肯定会有问题，到接收页面无法识别。
解决办法1：
java.net.URLEncoder.encode(sContent,"gb2312"); 然后再