/* 9TW8o}k`
**SiteFileFetch.java H
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*/ 4]u,x`6C
package NetFox; k) 3s?
import java.io.*; *s36OF!
import java.net.*; :5<#X8>d
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public class SiteFileFetch extends Thread { :'ihE\j
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SiteInfoBean siteInfoBean = null; //文件信息Bean ytob/tc
long[] nStartPos; //开始位置 ?GfxBZWJ
long[] nEndPos; //结束位置 z^9E;
FileSplitterFetch[] fileSplitterFetch; //子线程对象 6*V8k%H
long nFileLength; //文件长度 E6JV}`hSk
boolean bFirst = true; //是否第一次取文件 Fi/jR0]e2
boolean bStop = false; //停止标志 "YD.=s
File tmpFile; //文件下载的临时信息 u<C$'V
DataOutputStream output; //输出到文件的输出流 @7]\y7D
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) b+_hI)T
public SiteFileFetch(SiteInfoBean bean) throws IOException 0hb/`[Q
{ N@}gLBf
siteInfoBean = bean; /xF 9:r
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); wU.'_SBfB
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); "C& J wm?
if(tmpFile.exists ()) }oV3EIH
{ Slo9#26
bFirst = false; dUZ$wbV%h
read_nPos(); +{'lZa
} s?5d
else #*\Ry/9Q
{ {dDq*sLf
nStartPos = new long[bean.getNSplitter()]; u9 %;{:]h
nEndPos = new long[bean.getNSplitter()]; +fkP+RVY
} .byc;9M%
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} j_(?=7Y3g
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public void run() OX`?<@6
{ xP42xv9U
//获得文件长度 Ls lM$
//分割文件 k"0%' Y
//实例FileSplitterFetch >J9IRAm}sc
//启动FileSplitterFetch线程 ysL0hwir
//等待子线程返回 uF+);ig
try{ gYRqqV
if(bFirst) \f6lT3"VN
{ /j$$0F>s7
nFileLength = getFileSize(); Zp^)_ 0
if(nFileLength == -1) $ #TID=
{ -6(h@F%E
System.err.println("File Length is not known!"); U`:l AG
} o`oRG)QC
else if(nFileLength == -2) ~}epq6L>
{ FpwlV}:
System.err.println("File is not access!"); aeLBaS
} \MfR #k0
else 5dbX%e_OP
{ f S(^["*G
for(int i=0;i<nStartPos.length;i++) /,=Wy"0TJ
{ U+:S7z@j?
nStartPos = (long)(i*(nFileLength/nStartPos.length)); 8''9@xz
} ?aP1
for(int i=0;i<nEndPos.length-1;i++) Rc$=+K#
{ '2;Ny23
nEndPos = nStartPos[i+1]; FRb&@(;
} mvUVy1-c
nEndPos[nEndPos.length-1] = nFileLength; jI@bTS o
} E!:.G+SEl
} cP/F|uG5
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//启动子线程 ,e}mR>i=e
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; !~6'@UYo
for(int i=0;i<nStartPos.length;i++) ZE5-i@1
{ 1^n5CI|7u
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), DW'0j$;
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), AJJ%gxqGq
nStartPos,nEndPos,i); I^rZgp<'i
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); sa\|"IkD2
fileSplitterFetch.start();
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} Om &{4a\
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), d;@E~~o?B]
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); p,_6jdz
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", j TB<E=WC
nEndPos = " + nFileLength); F[Guy7?O
// fileSplitterFetch[nPos.length-1].start(); ~ wJ3AqNC?
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//等待子线程结束 1{;[q3a
//int count = 0; p@!@^1j=
//是否结束while循环 >*<6 zQf
boolean breakWhile = false; USHlb#*
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while(!bStop) q9g[+*9]$
{ P!>{>r4
write_nPos(); }uV?
Utility.sleep(500); L*SSv
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breakWhile = true; d~P<M3#>
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for(int i=0;i<nStartPos.length;i++) =2vMw]
{ #buV;!_!E?
if(!fileSplitterFetch.bDownOver) X+'^Sp
{ {m*V/tX
breakWhile = false; r=iMo7q
break; oZ\qT0*eb
} .5#tB*H
} iA^+/Lt
if(breakWhile) %FR^[H]
break; :<WQ;q
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//count++; I]WeZ,E
//if(count>4) [Q.4]K2
// siteStop(); wn A%Nh7
} zvK5Zxl
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System.err.println("文件下载结束!"); DS,FVh".|
} 8y4D9_{
catch(Exception e){e.printStackTrace ();} #.<F5
} hB GGs
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//获得文件长度 SJ WP8+
public long getFileSize() BJ.8OU*9]S
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int nFileLength = -1; UmD-7Fd
try{ ==jw3_W
URL url = new URL(siteInfoBean.getSSiteURL()); G=bP<XF
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); :hhE=A>X
httpConnection.setRequestProperty("User-Agent","NetFox"); v(Zi;?c
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int responseCode=httpConnection.getResponseCode(); j~L1~@
if(responseCode>=400) Jr>S/]"
{ ~q_+;W.
processErrorCode(responseCode);
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return -2; //-2 represent access is error Dy{`">a
} /@nRL
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String sHeader; MkNURy>n&
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for(int i=1;;i++) ,I&0#+}n
{ a6k(O8Ank3
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); @<TfA>*VJ
//Utility.log(in.readLine()); ,8"[ /@
sHeader=httpConnection.getHeaderFieldKey(i); 0iZ9a/v
if(sHeader!=null) `7qp\vYL
{ n40MP5RxY
if(sHeader.equals("Content-Length")) AIxBZt7{b
{ %M,d/4=P
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); On.x~t
break; v yLAs;
} wAOVH].
} wh m tEY
else c.{&~
break; V-ouIqnI
} Gxa.<E^k
} &P{p\ v2Y
catch(IOException e){e.printStackTrace ();} c'#J{3d
catch(Exception e){e.printStackTrace ();} HFx"fT
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Utility.log(nFileLength); %FWfiFV|<
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return nFileLength; . nF
} BvW gH.OX
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//保存下载信息(文件指针位置) s>``-
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private void write_nPos() fQ.>G+0I>
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try{ D:vUy*
output = new DataOutputStream(new FileOutputStream(tmpFile)); v?TJ!o
output.writeInt(nStartPos.length); cTaD{!zm5
for(int i=0;i<nStartPos.length;i++) *n_4Rr
{ MHyl=5
// output.writeLong(nPos); UG'U
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output.writeLong(fileSplitterFetch.nStartPos); ^?]H$e
output.writeLong(fileSplitterFetch.nEndPos); S=amj cC
} Heif FJn
output.close(); jsaCnm>&
} Bt7v[Ot
catch(IOException e){e.printStackTrace ();} J+NK+,_*M
catch(Exception e){e.printStackTrace ();} )$4DH:WN
} gI5nWEM0{
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//读取保存的下载信息(文件指针位置) ViT 5Jn7
private void read_nPos() i6:yNb ='
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try{ ~[y+B0I3
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); UBHQzc+,
int nCount = input.readInt();
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nStartPos = new long[nCount]; bCe-0!Q
nEndPos = new long[nCount]; _1c_TM h}9
for(int i=0;i<nStartPos.length;i++) SfL`JNi)
{ =?Md&%j
nStartPos = input.readLong(); E(LE*J
nEndPos = input.readLong(); Byj~\QMD|
} [gp:nxyfQm
input.close(); y+afUJT
} F/>Pvq]
catch(IOException e){e.printStackTrace ();} yZ0ZP
catch(Exception e){e.printStackTrace ();} (b}7Yb]#c
} u`@FA?+E1
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private void processErrorCode(int nErrorCode) |6^ K
{ aBi:S3 qk
System.err.println("Error Code : " + nErrorCode); B&N&e