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**SiteFileFetch.java R}Z2rbt
*/ |;(0]
package NetFox; Q[.HoqWK
import java.io.*; ?cD2EX%(
import java.net.*; r@]iy78
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public class SiteFileFetch extends Thread { kESnlmy@J
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SiteInfoBean siteInfoBean = null; //文件信息Bean )NL_))\
long[] nStartPos; //开始位置 29AWg(9?aS
long[] nEndPos; //结束位置 B0eKj=y;
FileSplitterFetch[] fileSplitterFetch; //子线程对象 #a=~a=c(^
long nFileLength; //文件长度 Z2hIoCT
boolean bFirst = true; //是否第一次取文件 `%A>{ A"
boolean bStop = false; //停止标志 {/PiX1mn
File tmpFile; //文件下载的临时信息 ^h\Y.
DataOutputStream output; //输出到文件的输出流 p}O[A`
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) >'96SE3
public SiteFileFetch(SiteInfoBean bean) throws IOException 0dKi25J
{ xRPUGGv
siteInfoBean = bean; Hlye:.$
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); J}3 7 9
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); bO\E)%zp
if(tmpFile.exists ()) l!YjDm{E
{ $g+q;Y~i0
bFirst = false; 5>*~1}0T
read_nPos(); |}^BF%8V:
} 8^|lsB}x?
else qJPEq%'Q
{ UCF'%R
nStartPos = new long[bean.getNSplitter()]; z]O,Vqpl?
nEndPos = new long[bean.getNSplitter()]; B$@fE}
} 'SE?IE {
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} EoD[,:*
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public void run() &['cZ/bM
{ @Ap~Wok
//获得文件长度 dpWBY3(7a
//分割文件 [W{WfJ-HwG
//实例FileSplitterFetch !<I3^q
//启动FileSplitterFetch线程 S@PAtB5
//等待子线程返回 t;e+WZkV
try{ VQ((c:+!
if(bFirst) /WWD;keP5
{ s`Z'5J;S
nFileLength = getFileSize(); v<c@bDZ>
if(nFileLength == -1) 22gk1'~dO
{ .S=^)
System.err.println("File Length is not known!"); ?cdjQ@j~h
} SBynu
else if(nFileLength == -2) xU_Dg56z'&
{ 3iC$ "9!p
System.err.println("File is not access!"); I? o)X!
} c[QXc9
else %qj8*1
{ Az"(I>VfD
for(int i=0;i<nStartPos.length;i++) }"CX`
{ [[sfuJD
nStartPos = (long)(i*(nFileLength/nStartPos.length)); 6I`Lszs
} leSR2os
for(int i=0;i<nEndPos.length-1;i++) {D9m>B3"{
{ C/L+gU&
nEndPos = nStartPos[i+1]; "UDV4<|^k
} Hp!c\z;
nEndPos[nEndPos.length-1] = nFileLength; Q4vl
} f R?Xq@c
}
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//启动子线程 mqFo`Ee
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 7@*l2edXm+
for(int i=0;i<nStartPos.length;i++) /degBL+
{ UZ` <D/
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), S"wn0B$"
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), =Pu;wx9
nStartPos,nEndPos,i); xOAA1#
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); &>]c"?C*
fileSplitterFetch.start(); V`/D!8>
} tUPdq 0%t[
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), $xl>YYEBMH
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); +>uiI4g
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", C%l+<wpXO
nEndPos = " + nFileLength); S[zX@3eZV
// fileSplitterFetch[nPos.length-1].start(); wmQT$`$b
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//等待子线程结束 &+v!mw >
//int count = 0; yaD_c;
//是否结束while循环 NEb M>1>^
boolean breakWhile = false; [G/ti&Od^
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while(!bStop) 2sryhS'(H
{ ~dFdO7
write_nPos(); d@ ?++z
Utility.sleep(500); #OT8_D
breakWhile = true; c{X:0man
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for(int i=0;i<nStartPos.length;i++) 6yN8(&`
{ wcI?.
if(!fileSplitterFetch.bDownOver) |\W9$V
{ i:coNK)4
breakWhile = false; ` ,O#r0m
break; &=-ZNWNo
} ev}ugRxt|k
} P wY~L3,
if(breakWhile) #!i&
break; v3ky;~ke
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//count++; % >\v6ea
//if(count>4) 6|Qg=4_FHt
// siteStop(); /#C}1emK
} dpPu&m+
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System.err.println("文件下载结束!"); ZVin+ z
} $xK2M
catch(Exception e){e.printStackTrace ();} 2`?58&
} 3iI 4yg
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//获得文件长度 \pVmSac,
public long getFileSize() ,3As
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{ ruKm_j#J
int nFileLength = -1; eq!>~: #
try{ >$RQ
URL url = new URL(siteInfoBean.getSSiteURL()); 3;hztCZj
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); hN5?u:
httpConnection.setRequestProperty("User-Agent","NetFox"); Us.")GiHE
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int responseCode=httpConnection.getResponseCode(); R'udC}
if(responseCode>=400) @|jLw($Ly
{ PXRkK63
processErrorCode(responseCode); |g@n'^]
return -2; //-2 represent access is error vo]!IY
} IOjp'6Yr
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String sHeader; $Sx(vq6(
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for(int i=1;;i++) LrGLIt`
{ =sYUzYm
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); e` QniTkT
//Utility.log(in.readLine()); j+9;Cp]N V
sHeader=httpConnection.getHeaderFieldKey(i); 3!H&bOF
if(sHeader!=null) JdK'~-L
{ _-M27^\vV
if(sHeader.equals("Content-Length")) cOq'MDr
{ zarxv|
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); JoCZ{MhM
break; KmYSYNr@,
} sYG:\>}ie
} 2:6W_[7l!
else :< d.
break; I0qSx{K
} RnaxRnXVR
} Tx19\\r
catch(IOException e){e.printStackTrace ();} n?[JPG2X
catch(Exception e){e.printStackTrace ();} 9Ev<t\B
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Utility.log(nFileLength); Q:5^K
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return nFileLength; dKk#j@[n"
} (^@rr[.o7
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//保存下载信息(文件指针位置) C$+z1z.!
private void write_nPos() VL?sfG0
{ 'xP&u<(F
try{ $1E'0M`
output = new DataOutputStream(new FileOutputStream(tmpFile)); 2A95vC'u>|
output.writeInt(nStartPos.length); ..K@'*u
for(int i=0;i<nStartPos.length;i++) sy]hMGH:3W
{ 1o8C4?T&
// output.writeLong(nPos); Ov-Y.+L:
output.writeLong(fileSplitterFetch.nStartPos); Hh1]\4D,4
output.writeLong(fileSplitterFetch.nEndPos); F<+!28&h
} [X%Wg:K
output.close(); Z^[
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} Img$D*BM
catch(IOException e){e.printStackTrace ();} Ym8
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catch(Exception e){e.printStackTrace ();} cp)BPg
} */6lyODf
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//读取保存的下载信息(文件指针位置) * @=ZzL
private void read_nPos() Uk'bOp
{ 1s _N!a
try{ PU2^4h/[`
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); >lV'}0u)
int nCount = input.readInt(); Nrn_Gy>|D
nStartPos = new long[nCount]; KPrH1 [VU
nEndPos = new long[nCount]; &|K9qa~)Y
for(int i=0;i<nStartPos.length;i++) *yZ `aKfH
{ {zTnE?(o`
nStartPos = input.readLong(); YZk.{#^ c
nEndPos = input.readLong(); ! }>CEE
} 67g"8R#.V
input.close(); jf^BEz5
} ,gdud[&|;
catch(IOException e){e.printStackTrace ();} Ntt*}|:QV<
catch(Exception e){e.printStackTrace ();} w$DHMpW'
} ]<*-pRN
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private void processErrorCode(int nErrorCode) }3}H}
{ zMXQfR
System.err.println("Error Code : " + nErrorCode); b]b+PK*h
} ~JS BZ@
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//停止文件下载 3oOr*N3R
public void siteStop() 6E#znRi6IE
{ dSI<s^n
bStop = true; we/sv9v}n
for(int i=0;i<nStartPos.length;i++) Ii&\LJ
fileSplitterFetch.splitterStop(); RG.wu6Av
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} NZ"nG<;5
} \2^o,1r/
//负责部分文件的抓取 +'$5Jtz
**FileSplitterFetch.java SU5O+;{`'
*/ X`fb\}~R(
package NetFox; ka_(8
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import java.io.*; +ag_ w}
import java.net.*; q-s(2C
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public class FileSplitterFetch extends Thread { KL yI*`
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String sURL; //File URL G*f\
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long nStartPos; //File Snippet Start Position h343$,))u
long nEndPos; //File Snippet End Position 2FcNzAaV
int nThreadID; //Thread's ID brX[-
boolean bDownOver = false; //Downing is over \(MIDCZ@-
boolean bStop = false; //Stop identical ^
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FileAccessI fileAccessI = null; //File Access interface 9:P\)'y?
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException (6Ciqf8
{ I^Dm 3yz
this.sURL = sURL; N8iLI`
this.nStartPos = nStart; ?>Ngsp>-P
this.nEndPos = nEnd; 2?{'(iay
nThreadID = id; 9:*[Q"v
fileAccessI = new FileAccessI(sName,nStartPos);//定位 6>]w1
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} ;0U*N &
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public void run() NBL%5!'
{ H:)_;k
while(nStartPos < nEndPos && !bStop) @^Rl{p
{ UM/!dt}DnF
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try{ f^ja2.*%?
URL url = new URL(sURL); a^8PB|G
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ' 55G:r39
httpConnection.setRequestProperty("User-Agent","NetFox"); I~;w Q
String sProperty = "bytes="+nStartPos+"-"; {
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httpConnection.setRequestProperty("RANGE",sProperty); +0?1"2
Utility.log(sProperty); D4\[D8pD
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InputStream input = httpConnection.getInputStream(); H,c`=Ii3
//logResponseHead(httpConnection); K9-9 c"cz
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byte[] b = new byte[1024]; 5DDSo0E
int nRead; VEp cCK
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) tY>Zy1hlI
{ T(qTipq0
nStartPos += fileAccessI.write(b,0,nRead); '#XT[\
//if(nThreadID == 1) 9a @rsyX
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); vz~Oi
} @mJ~?d95v
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