/* {L-{Y<fke
**SiteFileFetch.java 8^P2GG'+-
*/ O)$N}V0
package NetFox; WQIM2_=M
import java.io.*; GDo)6du
import java.net.*; c"%_]7
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public class SiteFileFetch extends Thread { UijuJ(Tle
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SiteInfoBean siteInfoBean = null; //文件信息Bean JL]k:i^`A
long[] nStartPos; //开始位置 7N} \1Di5
long[] nEndPos; //结束位置 5H'b4Cyi`
FileSplitterFetch[] fileSplitterFetch; //子线程对象 (04j4teE
long nFileLength; //文件长度 Ru9pb~K
boolean bFirst = true; //是否第一次取文件 m5'__<
boolean bStop = false; //停止标志 2kp|zX(
File tmpFile; //文件下载的临时信息 :uT
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DataOutputStream output; //输出到文件的输出流 T_(e(5
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) .^9/ 0.g8t
public SiteFileFetch(SiteInfoBean bean) throws IOException ~Me&cT8
{ /_zF?5h
siteInfoBean = bean; Y>dg10=
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); BZ\EqB
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); @
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if(tmpFile.exists ()) D:6x*+jah)
{ r0Y?X\l*
bFirst = false; {R1Cxt}
read_nPos(); 8eS@<[[F#
} |j5AU
else T_oW)G
{ $E4O^0%/p
nStartPos = new long[bean.getNSplitter()]; X('Q;^`
nEndPos = new long[bean.getNSplitter()]; `3>)BV<P
} L!+[]tB
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} qN`]*baS
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public void run() 0o"<^]
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{ PTI'N%W
//获得文件长度 vU\w3
//分割文件 AP?{N:+
//实例FileSplitterFetch e u=f-HW]
//启动FileSplitterFetch线程 0\_R|i_`>
//等待子线程返回 ~qLhZR\g^
try{ VtPoc(o4]
if(bFirst) kGBl)0pr`x
{ zOu$H[
nFileLength = getFileSize(); i*cE
if(nFileLength == -1) AVevYbucB
{ ]uj.uWD
System.err.println("File Length is not known!"); Tm~#wL
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} U*qK*"k
else if(nFileLength == -2) rY_C3;B
{ -JyODW#j
System.err.println("File is not access!"); n4r( Vg1GS
} <8z[,X}bM
else \'^Z_6{w
{ yS.fe[
for(int i=0;i<nStartPos.length;i++) lA^Kh
{ Kj<<&_B.H
nStartPos = (long)(i*(nFileLength/nStartPos.length)); {'wU&!
} 1^H<+0
for(int i=0;i<nEndPos.length-1;i++) ^)0{42!]
{ {</$ObK
nEndPos = nStartPos[i+1]; )S;Xy`vO
} `w+9j-
nEndPos[nEndPos.length-1] = nFileLength; 3sg)]3jm2
} _I70qz8
} KxTYc
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//启动子线程 3xCA\*
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; C;:1CK
for(int i=0;i<nStartPos.length;i++) %ucmJ-<y#
{ CK`3
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Kp=3\) &
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), $d??(
nStartPos,nEndPos,i); )i6U$,]
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); kq.R(z+
fileSplitterFetch.start(); F0ivL`
} ks`
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ;Q,).@<C
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); |s3HeY+Co
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", U+}9X^
nEndPos = " + nFileLength); sxQ ,x/O
// fileSplitterFetch[nPos.length-1].start(); *ej o6>
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//等待子线程结束 hr}R,BR|
//int count = 0; Ef*.}gcU
//是否结束while循环 sFz4^Kn
boolean breakWhile = false; nTtt$I@hW
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while(!bStop) OFAqP1o{$
{ q2U"k
write_nPos(); R^O)fL 0_
Utility.sleep(500); LAVt/TcZS|
breakWhile = true; 2'^OtM,
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for(int i=0;i<nStartPos.length;i++) ;51!aC
{ #&8pp8wd,}
if(!fileSplitterFetch.bDownOver) ~i&< !O&
{ ToXFMkwY
breakWhile = false; {8p?we3l1
break; Qs[EA_
} 9DAwC:<r
} OsSiBb,W79
if(breakWhile) >`V|`Zi ?
break; _j<M}
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//count++; r_<i*l.
//if(count>4) \C\y'H5
// siteStop(); OuIW|gIu0
} cz~11j#
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System.err.println("文件下载结束!"); [Ik
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} .;v'oR1x5
catch(Exception e){e.printStackTrace ();} PaI63 !
} o|n0?bThS-
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//获得文件长度 eS%6hUb
public long getFileSize() "ZB`fNE
{ UlZ)|Ya<M
int nFileLength = -1; [ Zqg"`
try{ *8eh%3_$h
URL url = new URL(siteInfoBean.getSSiteURL()); jP6G.aiO
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); tfIBsw.
httpConnection.setRequestProperty("User-Agent","NetFox"); B-p5;h>
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int responseCode=httpConnection.getResponseCode(); ' g!_Flk
if(responseCode>=400) NP`ll0s
{ en6AAr:U}
processErrorCode(responseCode); {ZI6!zh'
return -2; //-2 represent access is error _Wsk3AP
} tJfN6
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String sHeader; 8$tpPOhzb
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for(int i=1;;i++) 7Ki7N{Kt
{ m64\@
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ]`U?<9~Ob
//Utility.log(in.readLine()); z#67rh{
sHeader=httpConnection.getHeaderFieldKey(i); D(?#oCCA
if(sHeader!=null) S5vMP
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{ g
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if(sHeader.equals("Content-Length")) j`M<M[C*4N
{ BnY|t2r
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); (&x\,19U$
break; c`=hK*
} 3/<^R}w\
} J-?(sjIX
else j'b4Sbs-f
break; 4KB?g7_*
} 5.UgJ/
} J, U~.c
catch(IOException e){e.printStackTrace ();} j-E>*N}-_
catch(Exception e){e.printStackTrace ();} D"aQbQP
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Utility.log(nFileLength); 5 :>
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return nFileLength; _
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} DuZ]g#
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//保存下载信息(文件指针位置) [NDYJ'VGe
private void write_nPos() mw.aavB
{ @D{[Hj`<
try{ r/:'}os;
output = new DataOutputStream(new FileOutputStream(tmpFile)); @TG~fJSA12
output.writeInt(nStartPos.length); )Em,3I/.l
for(int i=0;i<nStartPos.length;i++) o: DnZN
{ Li$k<AM
// output.writeLong(nPos); 'v)+S;oB
output.writeLong(fileSplitterFetch.nStartPos); S8<aq P
output.writeLong(fileSplitterFetch.nEndPos); 0kEq|k9
} skArocs
output.close(); WL]'lSHa
} e.h:9`"*
catch(IOException e){e.printStackTrace ();} 88U
catch(Exception e){e.printStackTrace ();} N=x,96CF
} N/.9Aj/h~&
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//读取保存的下载信息(文件指针位置) YR#1[fe*_
private void read_nPos() 0M.[) @
{ P3>2=qK"E(
try{ 0 ']M,iC/
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ^<b.j.$<z
int nCount = input.readInt(); 0+h?Bk
nStartPos = new long[nCount]; %uMsXa
nEndPos = new long[nCount]; KwyXM9h6=
for(int i=0;i<nStartPos.length;i++) M,lu)~H
{ J(L$pIM
nStartPos = input.readLong(); p 1fnuN |,
nEndPos = input.readLong(); (#BA{9T,^
} Dn!V)T
input.close(); Fm{y.URo
} Etk<`GRfA
catch(IOException e){e.printStackTrace ();} pswppC6f
catch(Exception e){e.printStackTrace ();} w|#79,&
} 9 f+7vCA
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private void processErrorCode(int nErrorCode) b6VAyTa
{ 1 Qkuxw
System.err.println("Error Code : " + nErrorCode); }DwXs` M7
} evP`&23tP
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//停止文件下载 4QDzG~N4)|
public void siteStop() 9`b3=&i\
{ o!&*4>tF
bStop = true; sk/Mh8z
for(int i=0;i<nStartPos.length;i++) bZJiubBRI
fileSplitterFetch.splitterStop(); ea/6$f9^
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} $S/ 8T
} =="SW"vNi
//负责部分文件的抓取 *n\qV*|6bI
**FileSplitterFetch.java )nV x 2m4
*/ U)6JJv
package NetFox; ]5CFL$_Q{
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import java.io.*; kE}Ib4]J
import java.net.*; Bf'(JJ7&N
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public class FileSplitterFetch extends Thread { #/6X44
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String sURL; //File URL C2T,1 =
long nStartPos; //File Snippet Start Position )c_ll;%
long nEndPos; //File Snippet End Position _\zfXHp
int nThreadID; //Thread's ID J KGZ0yn
boolean bDownOver = false; //Downing is over VB%xV
boolean bStop = false; //Stop identical 7[PXZT
FileAccessI fileAccessI = null; //File Access interface rL/+`H
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ~f:fOrLE#
{ }M@ pdE
this.sURL = sURL; 2J5dZYW
this.nStartPos = nStart; 8h=XQf6k0
this.nEndPos = nEnd; c@P,
nThreadID = id; dEnhNPeRl
fileAccessI = new FileAccessI(sName,nStartPos);//定位 *BV .zbGm
} Q*5d~Yr ]R
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public void run() Gy5W;,$q
{ 0%GWc}o
while(nStartPos < nEndPos && !bStop) uB?YJf .T@
{ TnrMR1Zx
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try{ .0
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URL url = new URL(sURL); \$I
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); e#
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httpConnection.setRequestProperty("User-Agent","NetFox"); A{k@V!A%
String sProperty = "bytes="+nStartPos+"-"; {u5@Yp
httpConnection.setRequestProperty("RANGE",sProperty); ? "gy`oCv
Utility.log(sProperty); }\ F>z
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+}!eAMQ
InputStream input = httpConnection.getInputStream(); $i hIHl6'
//logResponseHead(httpConnection); C%&7,F7
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byte[] b = new byte[1024]; >_".
int nRead; pJIH_H
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) "#()4.9
{ _gHJ4(?w
nStartPos += fileAccessI.write(b,0,nRead); KRQ/wuv
//if(nThreadID == 1) |cacMgly
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); >;Bhl|r~z
} F&\o1g-L
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Utility.log("Thread " + nThreadID + " is over!"); "v06Fj>q
bDownOver = true; )]}*oO
//nPos = fileAccessI.write (b,0,nRead); A,osrv
} @UA>6F
catch(Exception e){e.printStackTrace ();} :5(TOF
} LLMkv!%D
} Y+N87C<
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//打印回应的头信息 z t1Q_;
public void logResponseHead(HttpURLConnection con) W$&Q.Z
{ 6 B
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for(int i=1;;i++) ]PFc8qv{
{ fAK
String header=con.getHeaderFieldKey(i); ?'%&2M zM
if(header!=null) S'WmPv
//responseHeaders.put(header,httpConnection.getHeaderField(header)); _ n>0!
Utility.log(header+" : "+con.getHeaderField(header)); sTb/l!=o
else ^ZsME,
break; 1_'ZbZv4h
}
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} &sW/r::,
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public void splitterStop() o8" [6Ys
{ c}Qc2D3*
bStop = true; Zqao4
} uGv+c.~[j
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} 67e1Y@Xu
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/* XDn$=`2
**FileAccess.java YpWu\oP
*//文件访问(定位,写) PU8R
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package NetFox; k";;Snk
import java.io.*; dO=<3W
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public class FileAccessI implements Serializable{ k_skn3,u
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