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java filterÓ÷¨´óÈ«

¹Ø¼ü×Ö: filter
    ¹ýÂËÆ÷FilterÒ²¾ßÓÐÉúÃüÖÜÆÚ£ºinit()->doFilter()->destroy()£¬Óɲ¿ÊðÎļþÖеÄfilterÔªËØÇý¶¯¡£ÔÚservlet2.4ÖУ¬¹ýÂËÆ÷ͬÑù¿ÉÒÔÓÃÓÚÇëÇó·ÖÅÉÆ÷£¬µ«ÐëÔÚweb.xmlÖÐÉùÃ÷£¬<dispatcher>INCLUDE»òFORWARD»òREQUEST»òERROR</dispatcher>¸ÃÔªËØÎ»ÓÚfilter-mappingÖС£
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public class EncodingFilter implements Filter {   
  
    private String encoding = null;   
  
    public void destroy() {   
         encoding = null;   
     }   
  
    public void doFilter(ServletRequest request, ServletResponse response,   
             FilterChain chain) throws IOException, ServletException {   
         String encoding = getEncoding();   
        if (encoding == null){   
             encoding = "gb2312";   
         }   
         request.setCharacterEncoding(encoding);// ÔÚÇëÇóÀïÉèÖÃÉÏÖ¸¶¨µÄ±àÂë   
         chain.doFilter(request, response);   
     }   
  
    public void init(FilterConfig filterConfig) throws ServletException {   
        this.encoding = filterConfig.getInitParameter("encoding");   
     }   
  
    private String getEncoding() {   
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 Java™ ±¾»ú½Ó¿Ú£¨Java Native Interface£¬JNI£©ÊÇÒ»¸ö±ê×¼µÄ Java API£¬ËüÖ§³Ö½« Java ´úÂëÓëʹÓÃÆäËû±à³ÌÓïÑÔ±àдµÄ´úÂëÏ༯³É¡£Èç¹ûÄúÏ£ÍûÀûÓÃÒÑÓеĴúÂë×ÊÔ´£¬ÄÇô¿ÉÒÔʹÓà JNI ×÷ΪÄú¹¤¾ß°üÖеĹؼü×é¼þ —— ±ÈÈçÔÚÃæÏò·þÎñ¼Ü¹¹£¨SOA£©ºÍ»ùÓÚÔÆµÄϵͳÖС£µ«ÊÇ£¬Èç¹ûÔÚʹÓÃʱδעÒâijЩÊÂÏÔò ......

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1.DBUnit
DBunitÊÇÒ»¸ö»ùÓÚjunitÀ©Õ¹µÄÊý¾Ý¿â²âÊÔ¿ò¼Ü¡£ËüÌṩÁË´óÁ¿µÄÀà¶ÔÓëÊý¾Ý¿âÏà¹ØµÄ²Ù×÷½øÐÐÁ˳éÏóºÍ·â×°¡£
2.MOckito
MockitoÊÇÒ»¸öÕë¶ÔJavaµÄmocking¿ò¼Ü¡£Äã¿ÉÒÔʹÓüò½àµÄAPI±àд³ö ......

Effective Java¶ÁÊé±Ê¼Ç

package chape8;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
/**
* µÚ°ËÕ ͨÓóÌÐòÉè¼Æ
* µÚ45Ìõ£º ½«¾Ö²¿±äÁ¿µÄ×÷ÓÃÓò¼õСµ½×îС
*   ½«¾Ö²¿±äÁ¿µÄ×÷ÓÃÓò×îС»¯¡£¿ÉÒÔÔöÇ¿´úÂëµÄ¿É¶ÁºÍ¿Éά»¤ÐÔ£¬²¢½µµÍ³ö´íµÄ¿ÉÄÜÐÔ
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jakarta regexp (java strutsÕýÔò±í´ïʽ)


  Character Classes
      [abc]                  Simple character class
      [a-zA-Z]            ......

java È«ÅÅÁÐËã·¨

 import java.util.Arrays;
/**
 * ÇóÒ»¸öÊý×éµÄÈ«ÅÅÁÐËã·¨
 * @author Administrator
 */
public class Pai { 
 public void pai(char[] array,int start,int end){
  System.out.println(" -- ×éºÏ "+start+" µ½ "+end+" --");
  if(start==end){
  ......
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