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**SiteFileFetch.java J9t? ]9.,:
*/ YhK/pt43C
package NetFox; g<tTZD\g
import java.io.*; $P9$ ,w4
import java.net.*; d3J_IW+8R$
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public class SiteFileFetch extends Thread { ]8nm9qmF<
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SiteInfoBean siteInfoBean = null; //文件信息Bean $ttr_4=
long[] nStartPos; //开始位置 Dk6\p~q
long[] nEndPos; //结束位置 h#;K9#x6
FileSplitterFetch[] fileSplitterFetch; //子线程对象 aq| [g
long nFileLength; //文件长度 _ShJ3\,K
boolean bFirst = true; //是否第一次取文件 3t6'5{
boolean bStop = false; //停止标志 QHz76i!=>
File tmpFile; //文件下载的临时信息 O*CX@Ne
DataOutputStream output; //输出到文件的输出流 {!bJ.O
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) MpvA--
public SiteFileFetch(SiteInfoBean bean) throws IOException U4pvQE.m<
{ Ybg`Z
siteInfoBean = bean; +-137!x\q
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); H
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tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); `g1~ya(MC
if(tmpFile.exists ()) 3<E$m*
{ xF31%b`z:
bFirst = false; 7B :aJfxM
read_nPos(); 2b` M(QL
} DQQjx>CK
else y_r6T
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{ BJrNbo;T
nStartPos = new long[bean.getNSplitter()]; f|E'eFrFk
nEndPos = new long[bean.getNSplitter()]; `t2! M\)
} {<BK@U
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} 'FXZ`+r|
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public void run() %c{)'X
{ :UciFIa
//获得文件长度 ((q(Q9(F
//分割文件 e:R[
//实例FileSplitterFetch ,"ZlY}!Gn
//启动FileSplitterFetch线程 DR=1';63
//等待子线程返回 -lEh}r
try{ =0Sa
if(bFirst) n\Nl2u& m
{ \}W.RQ^3
nFileLength = getFileSize(); G8'3.;"W5
if(nFileLength == -1) $Yc9><i
{ SO"P3X
System.err.println("File Length is not known!"); 58,mu#yq6
} OwUbm0)h^V
else if(nFileLength == -2) mD3#$E!A1
{ /+YWp>6LU
System.err.println("File is not access!"); PN=yf@<V3F
} :8
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else /.bwwj_;
{ 471}'3
for(int i=0;i<nStartPos.length;i++) p10->BBg
{ (z{xd
nStartPos = (long)(i*(nFileLength/nStartPos.length)); GYO"1PM
} 2t<CAKBB
for(int i=0;i<nEndPos.length-1;i++) >{Q2S
{ @}:(t{>;e7
nEndPos = nStartPos[i+1]; Jjv&@a}
} k$c!J'qL&
nEndPos[nEndPos.length-1] = nFileLength; we3t,?`rk7
} v3Kqs:"\
} yFjSvm6
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//启动子线程 PR0]:t)E
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ]h6<o*
for(int i=0;i<nStartPos.length;i++) c9V'Z d#
{ XT)@)c7j
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), .E(Ucnz/
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), I6+5 mv\
nStartPos,nEndPos,i); u}$3.]-.?T
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); t"Rn#V\c."
fileSplitterFetch.start(); %"D-1&%zY
} -VL3em|0
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), L-yC 'C
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); u- ,=C/iU
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", TD<. :ul]
nEndPos = " + nFileLength); qmhHHFjQ
// fileSplitterFetch[nPos.length-1].start(); WD<M
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//等待子线程结束 8l6R.l
//int count = 0; *=rl<?tX
//是否结束while循环 c;VW>&,B
boolean breakWhile = false; 74_ji!
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while(!bStop) ]*).3<Lw
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write_nPos(); /}Max@.`
Utility.sleep(500); 5 Jd,]~KAP
breakWhile = true; EG,RlmcPp
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for(int i=0;i<nStartPos.length;i++) n,`&f~tap
{ [dL#0~CL$
if(!fileSplitterFetch.bDownOver) U.&=b<f(0r
{ Zi^&x6y^
breakWhile = false; >354O6
break; ~%cbp&s*/q
} _15r!RZ:1
} w1[F]|
if(breakWhile) P:=3;d{v
break; *g7dB2{
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//count++; R ~#\gMs
//if(count>4) 2|+**BxHD
// siteStop(); E1=]m
} .- {B
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System.err.println("文件下载结束!"); ^8DC
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} ^J?I-LG
catch(Exception e){e.printStackTrace ();} d+$a5 [^9
} RV-7y^[]^
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//获得文件长度 !ce:S!P
public long getFileSize() ygh*oVHO
{ 72.ZE%Ue
int nFileLength = -1; smJ%^'x
try{ lj(}{O
URL url = new URL(siteInfoBean.getSSiteURL());
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); !ce5pA
httpConnection.setRequestProperty("User-Agent","NetFox"); >J+hu;I5
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int responseCode=httpConnection.getResponseCode(); QOMh"wC3
if(responseCode>=400) __OD^?qa
{ #)z_TM07P
processErrorCode(responseCode); 46Vx)xX
return -2; //-2 represent access is error &Nl:
} VU 9w2/cM
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String sHeader; adRvAq]mA
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for(int i=1;;i++) A70x+mjy^T
{ N;Wm{~Zhb
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 0x*L"HD
//Utility.log(in.readLine()); #**vIwX-Q
sHeader=httpConnection.getHeaderFieldKey(i); ]X%T^3%G
if(sHeader!=null) kO>F, M
{ LR|L P)I
if(sHeader.equals("Content-Length")) v47Y7s:uQ
{ `KgIr,Q)
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); v2][gn+58
break; !lpKZG
} bxLeQWr6
} /{QR:8}-Q
else vau0Jn%=ck
break; u czOSd
} D',[M)
} 8K$q6V%#
catch(IOException e){e.printStackTrace ();} u2}zRC=
catch(Exception e){e.printStackTrace ();} 8&+m5xS
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Utility.log(nFileLength); JO{Rth
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return nFileLength; IWc?E
} x=]PE}<E
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//保存下载信息(文件指针位置) *c<0cHv*
private void write_nPos() e!BablG[
{ ]w*w@:Zk
try{ 6'E3Q=}d
output = new DataOutputStream(new FileOutputStream(tmpFile)); b8o}bm{s
output.writeInt(nStartPos.length); C5k\RS9
for(int i=0;i<nStartPos.length;i++) E3%:7MB
{ =GGt:3Kx-
// output.writeLong(nPos); <B"M} Y>_P
output.writeLong(fileSplitterFetch.nStartPos); fiG/"/u
output.writeLong(fileSplitterFetch.nEndPos); GO3F[l
} ii,/omn:
output.close(); OZ,%T9vP
} 0 1~&H8 =
catch(IOException e){e.printStackTrace ();} r92C^h0
catch(Exception e){e.printStackTrace ();} 3"9'MDKH
} |^ K"#K
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//读取保存的下载信息(文件指针位置) AiMD"7
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private void read_nPos() e(t,~(
{ !>olD_
try{ pyvZ[R9
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); cU`sA_f
int nCount = input.readInt(); YS7R8|
nStartPos = new long[nCount]; 5yC$G{yV
nEndPos = new long[nCount]; AL(YQ)-Cg
for(int i=0;i<nStartPos.length;i++) +aa( YGL
{ /<J&ZoeJB
nStartPos = input.readLong(); u>e4;f`F
nEndPos = input.readLong(); 8
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} ?=C?3R
input.close(); #:C?:RMS
} }\p>h
catch(IOException e){e.printStackTrace ();} y:\ ^[y IQ
catch(Exception e){e.printStackTrace ();} S w<V/t
} o'9K8q\1
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private void processErrorCode(int nErrorCode) #+X|,0p
{ ]yzqBbV
System.err.println("Error Code : " + nErrorCode); m@qM|%(0x
} _'g'M=E
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//停止文件下载 {|{}]B
public void siteStop() v7;zce/~
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bStop = true; C&d%S|:IR
for(int i=0;i<nStartPos.length;i++) >,ThIwRN
fileSplitterFetch.splitterStop(); p^=>N9
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} < C{-ph
} &3jq'@6
//负责部分文件的抓取 i{['18Q$F3
**FileSplitterFetch.java 2<