/* pll5m7[
**SiteFileFetch.java ~Dg:siw
*/ @.e4~qz\
package NetFox; 42`Uq[5Y
import java.io.*; xEG:KSH
import java.net.*; py$Gy-I~[
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public class SiteFileFetch extends Thread { 0Cc3NNdz
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SiteInfoBean siteInfoBean = null; //文件信息Bean '(lsJY[-x
long[] nStartPos; //开始位置 7gtaI3
long[] nEndPos; //结束位置 #W:.Fsq
FileSplitterFetch[] fileSplitterFetch; //子线程对象 >u%Bn\G
long nFileLength; //文件长度 @kd$.7Y9
boolean bFirst = true; //是否第一次取文件 s\.r3U&6
boolean bStop = false; //停止标志 drCL7.j#L
File tmpFile; //文件下载的临时信息 65B&>`H~
DataOutputStream output; //输出到文件的输出流 PR;Bxy
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) FUI/ A>
public SiteFileFetch(SiteInfoBean bean) throws IOException Q8TR@0d
{ .t^1e
siteInfoBean = bean; Fkv284,LM
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); W&A^.% 2l
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); +fvVora
if(tmpFile.exists ()) HmXxM:[4;
{ pDC`Fi
bFirst = false; L `2{H%J`
read_nPos(); dsEvpa$?
} aV fsF|,
else 9Eh*r@>
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nStartPos = new long[bean.getNSplitter()]; VU\G49
nEndPos = new long[bean.getNSplitter()]; NX8w(~r,:
} Xe}I;sKrB
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public void run() >U:-U"rA?
{ n~,6!S
//获得文件长度 h\C1:0x{
//分割文件 MO]zf3f!
//实例FileSplitterFetch e{:
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//启动FileSplitterFetch线程 |r*y63\T
//等待子线程返回 ~HctXe' x
try{ Ow0~sFz
if(bFirst) I/h( *~/
{ K/&
nFileLength = getFileSize(); sI)jqHZG
if(nFileLength == -1) #;2kN
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{ <Rt0
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System.err.println("File Length is not known!"); ziAn9/sT
} P@etT8| V
else if(nFileLength == -2) c:DV8'fT
{ X?8bb! g%Q
System.err.println("File is not access!"); f]+.
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} UuJ gB)
else Dhft[mvo
{ 2J(,Xf
for(int i=0;i<nStartPos.length;i++) m7,"M~\pX
{ m,J9:S<5;
nStartPos = (long)(i*(nFileLength/nStartPos.length)); FOa2VP%
} \a:-xwUu<
for(int i=0;i<nEndPos.length-1;i++) u_=>r_J[b
{ t-FrF </0
nEndPos = nStartPos[i+1]; $a')i<m^g
} yX\~{%
nEndPos[nEndPos.length-1] = nFileLength; N8wA">u
} CfLPs)\ACm
} q_6<}2m,U
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//启动子线程 %yy|B
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; pr"q-S>E
for(int i=0;i<nStartPos.length;i++) g*U[?I"sC
{ (Sj?BZjC
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 6K.0dhl>`B
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), -A8CW9|mk
nStartPos,nEndPos,i); ~:A=o?V2
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ~RM_c
fileSplitterFetch.start(); jW|M)[KJN
} 9&4z4@on
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), %tz foiJ%P
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); orF8%
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", |>p?Cm
nEndPos = " + nFileLength); 62OZj%CXN
// fileSplitterFetch[nPos.length-1].start(); &ZPyZj
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//等待子线程结束 $T'lWD *
//int count = 0; [{-;cpM\
//是否结束while循环 ue6&)7:~
boolean breakWhile = false; C'z}jM`g
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while(!bStop) pu+jw<7
{ ]+78
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write_nPos(); >x1?t
Utility.sleep(500); i\P)P!
breakWhile = true; rcMSso2
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for(int i=0;i<nStartPos.length;i++) LT '2446
{ &FzZpH
if(!fileSplitterFetch.bDownOver) #.W<[KZf
{ ytGcigw(P
breakWhile = false; ,dk!hm u
break; tsTCZ);(
} [lAZ)6E~=
} 4}HY= 0Um
if(breakWhile) v+`gQXJ"G
break; .37Jrh0Iv
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//count++; FAd4p9[Y
//if(count>4) }7|UA%xz
// siteStop(); $>PV6
} ||kUi=5
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System.err.println("文件下载结束!"); |`6*~ciUV
} xrl!$xE
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catch(Exception e){e.printStackTrace ();} b\Gw|?Rv
} ],ISWb
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//获得文件长度 lK3Z}e*eXQ
public long getFileSize() (E?X@d iu
{ m&8'O\$
int nFileLength = -1; ^NiS7 )FX
try{ %FO#j 6
URL url = new URL(siteInfoBean.getSSiteURL()); Tf?|*P
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); .~dNzonq
httpConnection.setRequestProperty("User-Agent","NetFox"); -|A`+1-R+
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int responseCode=httpConnection.getResponseCode(); Qc]Ki3ls
if(responseCode>=400) u IGeSd5B
{ dBMr%6tz
processErrorCode(responseCode); =6:>C9
return -2; //-2 represent access is error J PK(S~
} <C,lHt
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String sHeader; ^8eu+E.{
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for(int i=1;;i++) f&
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{ 8!(09gW'>
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); E;AOCbV*$
//Utility.log(in.readLine()); JQ)w/@Vu=
sHeader=httpConnection.getHeaderFieldKey(i); xF8^#J6>
if(sHeader!=null) 0'0GAh2
{ jou741
if(sHeader.equals("Content-Length")) f/NfvLi(AU
{ m3E`kW|
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Wc
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break; 7[?{wbq
} "nEfk{ g
} qt!0#z8
else Ryrvu 1 k
break; P4S]bPIp
} YZ0Jei8+-
} @is !VzE
catch(IOException e){e.printStackTrace ();} TO~Z6NA0
catch(Exception e){e.printStackTrace ();} ^J-\s_)"
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Utility.log(nFileLength); _)?59
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return nFileLength; X1PXX!]lo[
} 8\/$cP"<^
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//保存下载信息(文件指针位置) . +
private void write_nPos() <@z!kl
{ HXp$\%A)
try{ E\Et,l#|LY
output = new DataOutputStream(new FileOutputStream(tmpFile)); (6#,
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output.writeInt(nStartPos.length); Y ZyV
for(int i=0;i<nStartPos.length;i++) )eaEc9o>
{ :sL?jGk\
// output.writeLong(nPos); `}Z`aK
output.writeLong(fileSplitterFetch.nStartPos); [Y_CRxa\u
output.writeLong(fileSplitterFetch.nEndPos); hiQ #<
} mxfmK +'_
output.close(); FLzC kzJ:6
} wYAi-gdOi
catch(IOException e){e.printStackTrace ();} \x9.[?;=e
catch(Exception e){e.printStackTrace ();} BL^\"Xh$|
} |qFCzK9tD/
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//读取保存的下载信息(文件指针位置) VW/ICX~"d
private void read_nPos() &K.js
{ yrVk$k#6}
try{ %!r@l7<
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); U8gf_R'
int nCount = input.readInt(); A5[iFT>
nStartPos = new long[nCount]; :[C"}mR1
nEndPos = new long[nCount]; o!-kwtw`l
for(int i=0;i<nStartPos.length;i++) cA8A^Iv:0
{ f5ttQ&@FF
nStartPos = input.readLong(); C_ 4(-OWq
nEndPos = input.readLong(); JULns#tx}
} {\62c;.
input.close(); y1c2(K>tu
} +l) [A{
catch(IOException e){e.printStackTrace ();} #M~6A^)
catch(Exception e){e.printStackTrace ();} a*(,ydF|L
} l}MVk%[
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private void processErrorCode(int nErrorCode) '`nf7b(
{ VY|'7in"M
System.err.println("Error Code : " + nErrorCode); ,\Uc/wR
} ziTE*rNJ
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//停止文件下载 e=u?-8
public void siteStop() > t~2
{ |Jpi|'
bStop = true; sf5 F$
for(int i=0;i<nStartPos.length;i++) ~,O&A B
fileSplitterFetch.splitterStop(); 0wnC"2GUX
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} fIwG9cR
} *mtS\J
//负责部分文件的抓取 3 =-XA2zJ
**FileSplitterFetch.java ]r.95|V*
*/ wMvAm%}+
package NetFox; fuao*L]
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import java.io.*; wx[Y2lUh6
import java.net.*; uP NZ^lM
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public class FileSplitterFetch extends Thread { tx_h1[qi
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String sURL; //File URL m[8?d~
long nStartPos; //File Snippet Start Position $;VY`n
long nEndPos; //File Snippet End Position (F=q/lK$
int nThreadID; //Thread's ID *pj^d><
boolean bDownOver = false; //Downing is over :xy4JRcF
boolean bStop = false; //Stop identical i!u:]14>
FileAccessI fileAccessI = null; //File Access interface XkRPD
>\4"k4d}
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException X-k$6}D
{ Mp,aQ0bNS
this.sURL = sURL; ag{cm'.
this.nStartPos = nStart; caD)'FSES
this.nEndPos = nEnd; +Jw+rjnP
nThreadID = id; $*q^7ME
fileAccessI = new FileAccessI(sName,nStartPos);//定位 )y"8Bx=x4
} UR<a7j"@2
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public void run() o_R_
{ .{,fb
while(nStartPos < nEndPos && !bStop) ,0\Pr
{ 4D=^24f`0
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try{ aaRc?b'/
URL url = new URL(sURL); C7Ny-rj}IA
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Gph:'3
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httpConnection.setRequestProperty("User-Agent","NetFox"); ?M9?GodbP.
String sProperty = "bytes="+nStartPos+"-"; zTS P8Q7
httpConnection.setRequestProperty("RANGE",sProperty); hmp!|Q[)
Utility.log(sProperty); CX3yIe~u
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InputStream input = httpConnection.getInputStream(); wrm
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//logResponseHead(httpConnection); /ei(Q'pc[
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byte[] b = new byte[1024]; 7
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int nRead; KvY1bMU!
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) *|Bt!
{ n7VQi+i'
nStartPos += fileAccessI.write(b,0,nRead); Z# o;H$
//if(nThreadID == 1) 8Os: SC@Q
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); wn/Y5
} gn)>(MG
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Utility.log("Thread " + nThreadID + " is over!"); SL5QhP
bDownOver = true; fjh,e
//nPos = fileAccessI.write (b,0,nRead); we&D"V
} cH6<'W{*
catch(Exception e){e.printStackTrace ();} +<rWYF(ii/
} Gc,6;!+(
} Ex-?[Hq
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//打印回应的头信息 rcUJOI
public void logResponseHead(HttpURLConnection con) \'.|7{Xu
{ k7)<3f3&S.
for(int i=1;;i++) 'mYUAVmSC#
{ F2!]T =
String header=con.getHeaderFieldKey(i); ;!pSYcT,
if(header!=null) 4_W*LG~2s
//responseHeaders.put(header,httpConnection.getHeaderField(header)); )MeeF-Ad6
Utility.log(header+" : "+con.getHeaderField(header)); O#n=mJ
else Dks"(0g
break; _fjHa6S
} ^8V8,C)
} /Y0oA3am
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cI (}
public void splitterStop() a_(T9pr
{ iyTKy+3A
bStop = true; 'cPE7uNT
} !EOYqD
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} PrvV]#O*
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/* 6Sz|3ms
**FileAccess.java 1~y\MD*-j
*//文件访问(定位,写) ")i_{C,b^
package NetFox; khVfc
import java.io.*; ]PQ6 em
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public class FileAccessI implements Serializable{ cCv@fks
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 @cB6,iUr
RandomAccessFile oSavedFile; )-^[;:B\k"
long nPos; >)bn #5
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public FileAccessI() throws IOException Dd'J"|jF38
{ ^\g?uH6k U
this("",0); >l^[73,]L
} &0RKNpwg
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public FileAccessI(String sName,long nPos) throws IOException `%_(_%K
{ M.``o1b
oSavedFile = new RandomAccessFile(sName,"rw"); r1[#_A`Yn
this.nPos = nPos; PYyT#AcW2
oSavedFile.seek(nPos); AHet,N
} -=GmI1:=$4
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public synchronized int write(byte[] b,int nStart,int nLen) GP0}I@>?
{ r<!/!}fE,
int n = -1; zxC~a97`
try{ C&f{LpB`
oSavedFile.write(b,nStart,nLen); OZ4% 6/
n = nLen; `>u^Pm
} oT i$@q
catch(IOException e) ?0?+~0sI
{ thSXri?kl
e.printStackTrace (); 4^7*R
} #B5-3CwB
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return n; 'o|=_0-7W
} qPn!.m$/
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