音乐网站之技术总结

以迅雷不及掩耳响叮当之势，biu~biu~! 搞完了一个老师的布置的结业课设！

下面总结一下遇到的阻力以及解决的策略:

　　No.1 文件扫描问题（对于一个未知或者说已知的目录下，扫描出我们想要的mp3格式的音乐文件，而过滤掉其他文件呢？）

　　处理的套路：

　　　　　　第一步，假如我们能实现这样一个低版本技术，对于一个已知的文件取名为Hopg，我们我们能扫描出Hopg里面所有的文件以及目录的名称：

 1 package Hbut.Gxjun.Util;
 2 
 3 import java.io.File;
 4 import java.util.Scanner;
 5 
 6 /**
 7  * @author Gxjun
 8  */
 9 public class Filer {
10     
11     
12   static void ScannFile(String path){
13       
14     File   Myfile = new File(path);  //声明一个文件
15     String  FileName  [] ;
16     if(Myfile.isDirectory()){ 
17        //判断该文件是否是一个目录，若果是目录
18       //取出该目录下所有的文件    
19        FileName=Myfile.list();
20       for(int i=0;i<FileName.length; i++){  
21           ScannFile(path+"\"+FileName[i]);
22       }
23     }
24     else{
25          //然后对于path进行解析   我们知道路径的格式为T:Hopgds
26          String PathName []=path.split("\\");
27          String  Path="" ;
28          for(int i=0 ;i<PathName.length-1;i++){
29                Path+=PathName[i]+"\";
30          }
31         System.out.println("Path="+Path+"n"+"     "+PathName[PathName.length-1]);
32     }
33     
34   }
35         
36   public static void main(String args []){
37      
38         Scanner read = new Scanner(System.in);
39         while(read.hasNext()){
40            String path =read.next();
41              ScannFile(path);
42         }
43   }
44 }

部分结果显示：

  1 D:KuGou
  2 Path=D:KuGou
  3      Adele - Set Fire To The Rain.mp3
  4 Path=D:KuGou
  5      Beast - ONE.mp3
  6 Path=D:KuGou
  7      Beyond - 不再犹豫.mp3
  8 Path=D:KuGou
  9      Beyond - 光辉岁月.mp3
 10 Path=D:KuGou
 11      Beyond - 海阔天空.mp3
 12 Path=D:KuGou
 13      Beyond、黄家驹 - 再见理想.mp3
 14 Path=D:KuGou
 15      Big Sean、justin Bieber - As Long As You Love Me.mp3
 16 Path=D:KuGou
 17      bigbang - 谎言.mp3
 18 Path=D:KuGou
 19      By2、汪苏泷 - 有点甜 - 副本.mp3
 20 Path=D:KuGou
 21      By2、汪苏泷 - 有点甜.mp3
 22 Path=D:KuGouCache
 23      05f34c6687d33c237de18d8850644b5d.kg!
 24 Path=D:KuGouCache
 25      307a9fcc3710db123faf128ef731becd.kg!
 26 Path=D:KuGouCache
 27      350fe68306912b26c81de5b8bddbfe67.kg!
 28 Path=D:KuGouCache
 29      3f8d84c738ca1101361c3095b9b299a9.kg!
 30 Path=D:KuGouCache
 31      47aedcf2b436dd0ed74be3c7e8f0269c.kg!
 32 Path=D:KuGouCache
 33      4a0261fc66f392469c6900dee046e4e0.kg!
 34 Path=D:KuGouCache
 35      5100a94f545e4c78e2f9e901dfba3db9.kg!
 36 Path=D:KuGouCache
 37      6b9766ec0bd6466bd9b2230424bfe954.kg!
 38 Path=D:KuGouCache
 39      6d7a0adcd727cd09fc31c25e781c8fd0.kg!
 40 Path=D:KuGouCache
 41      742e793c1a61ceefb75f4419ad90b3fc.kg!
 42 Path=D:KuGouCache
 43      93a8251d3b11fde6fcab4490edf3445e.kg!
 44 Path=D:KuGouCache
 45      c7a379cad7e71c3d0e17297f174a4c61.kg!
 46 Path=D:KuGouCache
 47      c92e6c3c7cbb470c95d47dfd5b50aaf8.kg!
 48 Path=D:KuGouCache
 49      d857528545b27773754de5993550d8d5.kg!
 50 Path=D:KuGou
 51      Cleopatra Stratan - Numar Pan La Unu.mp3
 52 Path=D:KuGou
 53      Crossfire、龚格尔 - 穿越火线.mp3
 54 Path=D:KuGou
 55      Cs 战歌.mp3
 56 Path=D:KuGou
 57      Cs.mp3
 58 Path=D:KuGou
 59      Eagles - 加州旅馆.mp3
 60 Path=D:KuGou
 61      Ein Kleines Lied - Candee!.mp3
 62 Path=D:KuGou
 63      F4 - 流星雨.mp3
 64 Path=D:KuGou
 65      Groove Coverage - On the Radio.mp3
 66 Path=D:KuGou
 67      Groove Coverage - Wait(Radio Edit).mp3
 68 Path=D:KuGou
 69      July - Story Of Us.mp3
 70 Path=D:KuGou
 71      Justin Bieber - Home To Mama.mp3
 72 Path=D:KuGou
 73      Leessang、白智英 - 回忆.mp3
 74 Path=D:KuGou
 75      Lily Allen - Air Balloon.mp3
 76 Path=D:KuGou
 77      Lily Allen - Fuck You.mp3
 78 Path=D:KuGou
 79      Lily Allen - Fuckyou.mp3
 80 Path=D:KuGou
 81      Lily Allen - Hard Out Here.mp3
 82 Path=D:KuGou
 83      Lily Allen - Littlest Things.mp3
 84 Path=D:KuGou
 85      Lily Allen - Not Fair.mp3
 86 Path=D:KuGou
 87      Lily Allen - Somewhere Only We Know.mp3
 88 Path=D:KuGou
 89      Lily Allen、p!nk - True Love.mp3
 90 Path=D:KuGouLyric
 91      Adele - Hiding My Heart-5a85ae6773e09c1736460c8884b61287.krc
 92 Path=D:KuGouLyric
 93      Apink - 小指(Promise U)-c1ae5c7d15104fc60101ded19839d31a.krc
 94 Path=D:KuGouLyric
 95      Bebel Gilberto - All Around-6cdcbfd7d7fe404b8e1ea369c4c2a4dd.krc
 96 Path=D:KuGouLyric
 97      Beyond - 不再犹豫-feb99489257c611ac4b6aa2a7c1ea761.krc
 98 Path=D:KuGouLyric
 99      Beyond - 海阔天空-0278b3fcc9bdeae87298fd7e6eae8715.krc
100 Path=D:KuGouLyric
101      Big Sean、justin Bieber - As Long As You Love Me-a8d454a99b2cbd9aeca942b6bb127843.krc
102 Path=D:KuGouLyric
103      bigbang - 谎言-40153e25b8761ee0df84e5bd2c333203.krc
104 Path=D:KuGouLyric
105      bigbang - 谎言-a7c2d5efa5595a49543047619a0a43ae.krc
106 Path=D:KuGouLyric
107      Brandy、Ray J - Another Day In Paradise-42f8ca27763371f48fd3d5800af8c95a.krc
108 Path=D:KuGouLyric
109      Cs 战歌-40ce1e39e254925d2ea73c74683e7cec.krc
110 Path=D:KuGouLyric
111      Cs-dc6cd4b0f7a6c464319d755f5affd0cd.krc
112 Path=D:KuGouLyric
113      Eagles - 加州旅馆-102cab2133ac3eff9e95675a27c39ff7.krc
114 Path=D:KuGouLyric
115      F.I.R. - 千军破 - 游戏 主题曲-41141dbeaaf1279e6412e2628ac38369.krc
116 Path=D:KuGouLyric
117      Justin Bieber - Never Say Never-a9aa34e9991069ec0e84fcef1f710796.krc
118 Path=D:KuGouLyric
119      Justin Bieber - One Time-f461bf7d62d0e3d5763bb5dcec15e8b6.krc
120 
121      0d84e57621350fc9a75703f48371c669.kgtemp
122 Path=D:KuGouTemp
123      0e5caab4996a36048aaf70c8e78118d5.kgtemp
124 Path=D:KuGouTemp
125      0e6280489210d0e79a545e378b19537d.kgtemp
126 Path=D:KuGouTemp
127      102cab2133ac3eff9e95675a27c39ff7.kgtemp
128 Path=D:KuGouTemp
129      136f7f534e22e31acfef17bdf9f151a7.kgtemp
130 Path=D:KuGouTemp
131      153a8f5351a35ab5fb0242eeecaab9f6.kgtemp
132 Path=D:KuGouTemp
133      164b3e4d96ff8669b78c28a3e7f653f2.kgtemp
134 Path=D:KuGouTemp
135      169434aa609c10ce9d5ad214f4441f11.kgtemp
136 Path=D:KuGouTemp
137      19e56aa8033b1fa201177d89cb53c195.kgtemp
138 Path=D:KuGouTemp
139      1deba691aaad5063d2e14d68e7f5d36b.kgtemp
140 Path=D:KuGouTemp
141      1f90a59a49fb9bb3a2f9ed5c8643ad59.kgtemp
142 Path=D:KuGouTemp
143      25819fcfdfa3824a6123d543440b5687.kgtemp
144 Path=D:KuGouTemp
145      2a5c1d98b7a659d403c4302821af22a0.kgtemp
146 Path=D:KuGouTemp
147      2bbb2f71ee1079d5f182bc627ed716b4.kgtemp
148 Path=D:KuGouTemp
149      2be7047ff78e3c2d6f08d0168795896f.kgtemp
150 Path=D:KuGouTemp
151      2c77b621cd91d40785a668ef0acb4f2a.kgtemp
152 Path=D:KuGouTemp
153      2dfd540bd03d5c3fa87e71ee04e80f6f.kgtemp
154 Path=D:KuGouTemp
155      2e01f801090bf4481de825463f1f7e4e.kgtemp
156 Path=D:KuGouTemp
157      2ecffcc8f55c864d1c2ac75296ff6f2f.kgtemp
158 Path=D:KuGouTemp
159      30b474b415c15726f7969fa554d2dd8f.kgtemp
160 Path=D:KuGouTemp
161      35fd740e95cf3b8e7104534739d92361.kgtemp
162 Path=D:KuGouTemp
163      360939ec19b2f0cf17fdff2c41f0cd5b.kgtemp
164 Path=D:KuGouTemp
165      376e16c0a09e1d74988ce714202b98bf.kgtemp
166 Path=D:KuGouTemp
167      391462795935a52e5c0674c766279923.kgtemp
168 Path=D:KuGouTemp
169      3a57e9de928dd12fb04b6163e0dc9d97.kgtemp
170 Path=D:KuGouTemp
171      3c0f57cf3cc04db1f5c744059f3d192e.kgtemp
172 Path=D:KuGouTemp
173      3d307b751877ce9b4b73d30ae2869013.kgtemp
174 Path=D:KuGouTemp
175      3e33ca79e6966281c5b893c25064d94d.kgtemp
176 Path=D:KuGouTemp
177      4012fec0cdbd86248d2f1b3ad588fe89.kgtemp
178 Path=D:KuGouTemp
179      40ce1e39e254925d2ea73c74683e7cec.kgtemp
180 Path=D:KuGouTemp
181      41141dbeaaf1279e6412e2628ac38369.kgtemp
182 Path=D:KuGouTemp
183      4fa409eb849ca657ec2c8d6fa9aa4bcb.kgtemp
184 Path=D:KuGouTemp
185      52a25a4d1354ae2a2dade3ef20a167fa.kgtemp
186 Path=D:KuGouTemp
187      5579c6490823457c47ba96284c7cd347.kgtemp
188 Path=D:KuGouTemp
189      5602930f6d2a27f53913f72f80c3cb5b.kgtemp
190 Path=D:KuGouTemp
191      56ab6da7cff2de7d1fb7699f59806ed2.kgtemp
192 Path=D:KuGouTemp
193      56ed81ae949a86a55601a0c68c500954.kgtemp
194 Path=D:KuGouTemp
195      5770119ee402eb6321dadb7dad03a437.kgtemp
196 Path=D:KuGouTemp
197      5cf8d8822d5481ddb01181c8a5dc744f.kgtemp
198 Path=D:KuGouTemp
199      65a18b12679b564071cccefd1c601663.kgtemp

从这些结果中，我们会惊喜的发现，我们遍历完了所有的目录，但是也有点不足的地方，就是将歌词和临时文件也加入了进来！所以接下来我们需要解决的问题也变得单一起来！

--------如何剔除这些杂质，或者说过滤掉这些无用信息？

也许我们会发现，哟，不是要找格式嘛？那就按照我们需要的格式找就ok了嘛！ so ...... ! 问题就很容易搞定了！于是立马修改代码：

 1 package Hbut.Gxjun.Util;
 2 
 3 import java.io.File;
 4 import java.util.Scanner;
 5 
 6 /**
 7  * @author Gxjun
 8  */
 9 public class Filer {
10     
11     
12   static void ScannFile(String path){
13       
14     File   Myfile = new File(path);  //声明一个文件
15     String  FileName  [] ;
16     if(Myfile.isDirectory()){ 
17        //判断该文件是否是一个目录，若果是目录
18       //取出该目录下所有的文件    
19        FileName=Myfile.list();
20       for(int i=0;i<FileName.length; i++){  
21           ScannFile(path+"\"+FileName[i]);
22       }
23     }
24     else{
25          //然后对于path进行解析   我们知道路径的格式为T:Hopgds
26          String PathName []=path.split("\\");
27          String  Path="" ;
28          String  tmpName=PathName[PathName.length-1];
29          //按照我们想要的格式解析 
30          //  enum  tmps{mp3 ,mp4, mp5,};
31          //就简单的以mp3为类吧！
32          
33          String  tm [] =tmpName.split("\.");
34          if(tm.length>0&&tm[tm.length-1].equalsIgnoreCase("mp3")){
35            for(int i=0 ;i<PathName.length-1;i++){
36                Path+=PathName[i]+"\";
37             }
38              System.out.println("Path="+Path+"n"+"     "+tmpName);
39         }
40     }
41     
42   }
43         
44   public static void main(String args []){
45      
46         Scanner read = new Scanner(System.in);
47         while(read.hasNext()){
48            String path =read.next();
49              ScannFile(path);
50         }
51   }
52 }

部分结果显示：

 1 Path=D:KuGou
 2      Serenata Immortale(游戏《最终幻想7》配乐.mp3
 3 Path=D:KuGou
 4      T-ara - 不要忘记我.mp3
 5 Path=D:KuGou
 6      Westlife - My Love - 西域男孩.mp3
 7 Path=D:KuGou
 8      What Is Dancing.mp3
 9 Path=D:KuGou
10      不潮不花钱 - 副本.mp3
11 Path=D:KuGou
12      不潮不花钱.mp3
13 Path=D:KuGou
14      东方神起 - Spinning.mp3
15 Path=D:KuGou
16      东方神起 - 傻瓜.mp3
17 Path=D:KuGou
18      久石让 - 千寻のワルツ - 纯音乐版.mp3
19 Path=D:KuGou
20      久石让 - 梦の星空.mp3
21 Path=D:KuGou
22      五月天 - 倔强.mp3
23 Path=D:KuGou
24      五月天 - 忘词.mp3
25 Path=D:KuGou
26      五月天 - 拥抱.mp3
27 Path=D:KuGou
28      京田诚一 - 木漏れ日.mp3
29 Path=D:KuGou
30      伍佰 - 突然的自我.mp3
31 Path=D:KuGou
32      伪物语 白金ディスコ.mp3
33 Path=D:KuGou
34      信乐团 - 海阔天空.mp3
35 Path=D:KuGou
36      光良 - 第一次.mp3
37 Path=D:KuGou
38      冷漠 - 好男人中国造.mp3
39 Path=D:KuGou
40      凤凰传奇 - 飞天 - 游戏 龙门客栈 主题曲.mp3
41 Path=D:KuGou
42      刀郎 - 冲动的惩罚.mp3
43 Path=D:KuGou
44      刘若英 - 后来.mp3
45 Path=D:KuGou
46      劲舞团、劲舞团 - Oh My Baby.mp3
47 Path=D:KuGou
48      劲舞团、劲舞团、李孝利 - 2008版韩服新歌.mp3
49 Path=D:KuGou
50      千与千寻 - 那个夏天.mp3
51 Path=D:KuGou
52      卢巧音、王力宏 - 分手快乐.mp3
53 Path=D:KuGou
54      后舍男生 - As Long As You Love Me.mp3
55 Path=D:KuGou
56      周杰伦 - 最后的战役.mp3
57 Path=D:KuGou
58      周杰伦 - 甜甜的.mp3
59 Path=D:KuGou
60      周杰伦 - 简单爱.mp3
61 Path=D:KuGou
62      周杰伦 - 给我一首歌的时间.mp3
63 Path=D:KuGou
64      周杰伦 - 阳光宅男.mp3

介于此,第一个问题得到了很好的解决！然后可以结合数据库什么的就可以去做很多的事情了。

No 2 . 如何实现下载问题？也就是将服务器的文件，下载到客户端。首先分析，服务器和客户端所在的区域不同，对于服务器而言可能是大型或者说是分布式的服务器组件

其结构为：

而且，当我们需要保护自己的资源，就是外界可以下载资源，却无法访问资源所在位置。这样我们运用分派action可以实现，具体的代码如下：

/*关于xml的配置，遵循struts.conf配置文件 */

  1 /*
  2  * Generated by MyEclipse Struts
  3  * Template path: templates/java/JavaClass.vtl
  4  */
  5 package com.Hbut.Music.struts.action;
  6 
  7 import java.io.File;
  8 import java.io.FileInputStream;
  9 import java.io.FileNotFoundException;
 10 import java.io.FileOutputStream;
 11 import java.io.IOException;
 12 import java.io.InputStream;
 13 import java.io.UnsupportedEncodingException;
 14 import java.util.List;
 15 
 16 import javax.servlet.ServletOutputStream;
 17 import javax.servlet.http.HttpServletRequest;
 18 import javax.servlet.http.HttpServletResponse;
 19 import org.apache.struts.action.ActionForm;
 20 import org.apache.struts.action.ActionForward;
 21 import org.apache.struts.action.ActionMapping;
 22 import org.apache.struts.actions.DispatchAction;
 23 
 24 import com.Hbut.Music.Util.SQLHelp;
 25 
 26 /** 
 27  * MyEclipse Struts
 28  * Creation date: 06-01-2015
 29  * 
 30  * XDoclet definition:
 31  * @struts.action parameter="Gxjun" validate="true"
 32  * @struts.action-forward name="err" path="/404_2.jsp"
 33  * @struts.action-forward name="ok" path="/WEB-INF/list.jsp"
 34  */
 35 public class ForListAction extends DispatchAction {
 36     /*
 37      * Generated Methods
 38      */
 39 
 40     /** 
 41      * Method execute
 42      * @param mapping
 43      * @param form
 44      * @param request
 45      * @param response
 46      * @return ActionForward
 47      */
 48     public ActionForward Main(ActionMapping mapping, ActionForm form,
 49             HttpServletRequest request, HttpServletResponse response) {
 50         // TODO Auto-generated method stub
 51         try {
 52             request.setCharacterEncoding("utf-8");
 53             response.setCharacterEncoding("utf-8");
 54         } catch (UnsupportedEncodingException e) {
 55             // TODO Auto-generated catch block
 56             e.printStackTrace();
 57         }
 58         String req = (String)request.getParameter("FilePath");
 59         System.out.println(req);
 60         FileInputStream  fin=null;
 61         try {
 62                fin= new FileInputStream(new File(req));
 63         } catch (FileNotFoundException e) {
 64             // TODO Auto-generated catch block
 65             //e.printStackTrace();
 66         }
 67         //设置输出格式
 68            response.reset();
 69            response.setContentType("MP3");
 70            String []ss=req.split("\\");
 71            response.addHeader("Content-Disposition", "attachment; filename="" +ss[ss.length-1]);
 72           byte[] str = new byte[1024];
 73           int len =0;
 74           try {
 75               ServletOutputStream opu =response.getOutputStream();
 76             while((len=fin.read(str))>0){ 
 77                  opu.write(str, 0, len);
 78             }
 79         } catch (IOException e) {
 80             // TODO Auto-generated catch block
 81                e.printStackTrace();
 82         }finally{
 83             
 84             try {
 85                 if(fin!=null) fin.close();
 86     
 87             } catch (IOException e) {
 88                 // TODO Auto-generated catch block
 89                 e.printStackTrace();
 90             }
 91         }
 92           
 93          SQLHelp  sql  = new SQLHelp();
 94          String hql =" from  music";
 95          List<Object> list=null;
 96          list=sql.DataQuery(hql, null);
 97          /*for(int i=0 ; i<list.size(); i++){
 98              System.out.println(((music)list.get(i)).getName());
 99          }*/
100         request.setAttribute("File_List",list);
101         
102         return mapping.findForward("ok");
103     }
104 }

对于jsp文件页面，源码如下：

 1      <div class ="nav_mid_right">
 2                  <form action="" method="post">
 3                   <input type="text" class="search_text"/>
 4               </form>
 5            </div>
 6           </div><!--nav_mid结束--> 
 7          <div class="nav_right"></div>
 8     </div><!--nav结束-->
 9     
10     <div class="ad" id="picBox" style="height:400px">
11         <img src="images/ad.jpg" />
12        </div>    <!--ad结束-->
13        
14        <div class="list_main">
15                             
16       <div class="list_box">
17            <%  
18               List<music> lis = (List<music>) request.getAttribute("File_List");
19               
20            %>
21        <table cellpadding="0" cellspacing="0" width="100%" id="ul">    
22         <%
23         if(lis!=null){
24          for(int i=0;i<lis.size() ;i++){
25         %>
26         <tr height="10"></tr>
27         <tr height="25" title=<%=lis.get(i).getName()%> onmouseover="this.className = 'hover'" onmouseout="this.className = ''" onclick="play(false,this);sdnClick(12164)">
28             <td align="center"></td>
29             <!-- 名次 -->
30             <td align="center"><%=lis.get(i).getNo()%></td>
31     
32             <td class="t"><span><a href="forList.do?Gxjun=Main&FilePath=<%=lis.get(i).getPath()+"\"+lis.get(i).getName()%>"><%=lis.get(i).getName()%></a></span></td>
33             <!-- 上榜天数 -->
34             <td align="center"><%=lis.get(i).getDate() %></td>
35             <!-- 昨天排行 -->
36             <td align="center">0</td>
37             <!-- 最高排行 -->
38             <td align="center"></td>
39         </tr>
40         <%  } } %>
41             </table>
42               <div class="page">
43              <a href="#">首页</a><a href="#">&lt;</a><a href="#">1</a><a href="#">2</a><a href="#">3</a><a href="#">...</a><a href="#">&gt;</a><a href="#">末页</a>
44              </div>
45              </div>
46              <!--news_list结束-->
47              </div>
48             <!--list_box结束-->
49        </div>
50        <!--list_main结束-->

No3 .分页技术，之前已经有总结：

之前总结的的链接： http://www.cnblogs.com/gongxijun/p/4210250.html

　　但是这次是采取*.do?gxjun=***&par=12 ; 这种get方式传输....

所以，在编写过程原道过乱码，被折腾的要死要活，死去活来之后，最后在网上搜到了一篇机智网友的做法，加了过滤器Filter文件之后（当然现在才知道，这货只对

post传输有效，对于get并没有卵用。然后就去改了下tomcat 下面的 server.xml 将其编码格式改为utf-8）

关于Filter 文件：

 1 /**
 2  * 
 3  */
 4 package com.Hbut.Music.struts.Filter;
 5 
 6 import java.io.IOException;
 7 
 8 import javax.servlet.Filter;
 9 import javax.servlet.FilterChain;
10 import javax.servlet.FilterConfig;
11 import javax.servlet.ServletException;
12 import javax.servlet.ServletRequest;
13 import javax.servlet.ServletResponse;
14 import javax.servlet.http.HttpServlet;
15 
16 /**
17  * @author Administrator
18  * 过滤器
19  */
20 public class InfoFilter extends HttpServlet implements Filter {
21 
22     /* (non-Javadoc)
23      * @see javax.servlet.Filter#doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse, javax.servlet.FilterChain)
24      */
25     @Override
26     public void doFilter(ServletRequest arg0, ServletResponse arg1,
27             FilterChain arg2) throws IOException, ServletException {
28         // TODO Auto-generated method stub
29                 arg0.setCharacterEncoding("utf-8");
30                 arg2.doFilter(arg0, arg1);
31     }
32 
33     /* (non-Javadoc)
34      * @see javax.servlet.Filter#init(javax.servlet.FilterConfig)
35      */
36     @Override
37     public void init(FilterConfig arg0) throws ServletException {
38         // TODO Auto-generated method stub
39 
40     }
41 
42 }

将这个写成这样，然后去web.xml文件下配置一番就OK了！

大体是这样配置：

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="3.0" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee   http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
 3   <display-name />
 4   <servlet>
 5     <servlet-name>action</servlet-name>
 6     <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
 7     <init-param>
 8       <param-name>config</param-name>
 9       <param-value>/WEB-INF/struts-config.xml</param-value>
10     </init-param>
11     <init-param>
12       <param-name>debug</param-name>
13       <param-value>3</param-value>
14     </init-param>
15     <init-param>
16       <param-name>detail</param-name>
17       <param-value>3</param-value>
18     </init-param>
19     <load-on-startup>0</load-on-startup>
20   </servlet>
21   <filter>
22    <filter-name>InfoFilter</filter-name>
23   <filter-class>com.Hbut.Music.struts.Filter.InfoFilter</filter-class>
24   </filter>
25   
26   <servlet-mapping>
27     <servlet-name>action</servlet-name>
28     <url-pattern>*.do</url-pattern>
29   </servlet-mapping>
30    <filter-mapping>
31   <filter-name>InfoFilter</filter-name>
32   <url-pattern>/*</url-pattern>
33   </filter-mapping>
34   <welcome-file-list>
35     <welcome-file>index.jsp</welcome-file>
36   </welcome-file-list>
37 </web-app>

关于server.xml文件的格式，改成这样就可了！

 1   <!-- A "Connector" represents an endpoint by which requests are received
 2          and responses are returned. Documentation at :
 3          Java HTTP Connector: /docs/config/http.html (blocking & non-blocking)
 4          Java AJP  Connector: /docs/config/ajp.html
 5          APR (HTTP/AJP) Connector: /docs/apr.html
 6          Define a non-SSL HTTP/1.1 Connector on port 8080
 7     -->
 8     <Connector  URIEncoding="utf-8" 
 9                 port="8080" protocol="HTTP/1.1" 
10                connectionTimeout="20000" 
11                redirectPort="8443" />
12     <!-- A "Connector" using the shared thread pool-->