java xml
First
Parsing an XML Document
To read an XML document, you need a DocumentBuilder object, which you get from a DocumentBuilderFactory, like this:DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
You can now read a document from a file:File f = . . .
Document doc = builder.parse(f);
Alternatively, you can use a URL:URL u = . . .
Document doc = builder.parse(u);
You can even specify an arbitrary input stream:InputStream in = . . .
Document doc = builder.parse(in);
Validating XML Documents
Ïà¹ØÎĵµ£º
1£® ÔÚ¹¤³ÌÖд´½¨¼àÌýÀàSessionListener ²¢ÇÒʵÏÖHttpSessionListener½Ó¿Ú£¬´úÂëÈçÏÂ
import javax.servlet.http.HttpSessionEvent;
import javax.servlet.http.HttpSessionListener;
public class SessionListener implements HttpSessionListener {
private static ......
Êý×éÊÇJavaÓïÑÔÄÚÖõÄÀàÐÍ£¬³ý´ËÖ®Í⣬JavaÓжàÖÖ±£´æ¶ÔÏóÒýÓõķ½Ê½¡£JavaÀà¿âÌṩÁËÒ»Ì×Ï൱ÍêÕûµÄÈÝÆ÷À࣬ʹÓÃÕâЩÀàµÄ·½·¨¿ÉÒÔ±£´æºÍ²Ù×ݶÔÏó¡£ÏÂÃæ·Ö±ð½øÐÐÌÖÂÛ£¬ÔÚÑо¿JavaÈÝÆ÷Àà֮ǰ£¬ÏÈÁ˽âÒ»ÏÂJavaÊý×éµÄ»ù±¾¹¦ÄܺÍÌØÐÔ¡£
1. Êý×éµÄ»ù±¾ÌØÐÔ
Êý×éÓëÆäËüÖÖÀàµÄÈÝÆ÷(List/Set/Map)Ö®¼äµÄÇø±ðÔÚÓÚЧÂÊ¡¢È ......
1£ºjdk¿ª·¢ÖÐϵͳ»·¾³±äÁ¿ÉèÖãº
·½·¨ÈçÏ£º
Win2000ÖУº
ÓÒ¼üÎҵĵçÄÔ--¡·ÊôÐÔ--¡·¸ß¼¶--¡·»·¾³»·¾³±äÁ¿
classpath=.;jdk°²×°Ä¿\lib
path=jdk°²×°Ä¿Â¼\bin
×¢Ò⣺һ¶¨²»¿ÉºöÂÔ“.”¡£
......
JavaµÄºËÐÄAPIÊǷdz£ÅÓ´óµÄ,Õâ¸ø¿ª·¢ÕßÀ´Ëµ´øÀ´Á˺ܴóµÄ·½±ã£¬¾³£ÈËÓÐÆÀÂÛ,javaÈóÌÐòÔ±±äɵ¡£
µ«ÊÇһЩÄÚÈÝÎÒÈÏΪÊDZØÐëÕÆÎյ쬷ñÔò²»¿ÉÒÔÊìÁ·ÔËÓÃjava£¬Ò²²»»áʹÓþͺÜÄѰìÁË¡£
1¡¢java.lang°üϵÄ80£¥ÒÔÉϵÄÀàµÄ¹¦ÄܵÄÁé»îÔËÓá£
2¡¢java.util°üϵÄ80£¥ÒÔÉϵÄÀàµÄÁé»îÔËÓã¬ÌرðÊǼ¯ºÏÀàÌåϵ¡¢Õý¹æ±í´ïʽ¡¢Ê±¼ä¡ ......
×î½üStephan SchmidtÔÚ²©¿ÍÖз¢±íÁËÌâΪ¡¶ÏÂÒ»´úJava±à³Ì·ç¸ñ¡·µÄÎÄÕ£¬²ûÊöÁËËûÑÛÖÐJava±à³Ì·ç¸ñµÄ¸Ä±ä£¬ÒÔ¼°Î´À´µÄ×ßÏò£ºÐí¶à¹«Ë¾ºÍ¿ª·¢ÈËÔ±ÕýÔÚ´ÓJavaתÏòÆäËû±à³ÌÓïÑÔ£ºRuby¡¢Python¡¢Groovy¡¢Erlang»òScalaµÈµÈ¡£²»¹ýÄã¿ÉÄÜ×ö²»µ½ÕâÒ» µã¡£¼´±ãÈç´Ë£¬ÄãÒ²¿ÉÒԸıäÄãµÄ±à³Ì·ç¸ñ£¬»ñÈ¡ÕâЩÐÂÓïÑÔµÄÓÅÊÆ¡£ÊÂʵÉÏ£¬ÔÚ¹ýÈ ......