/* */^QH@ P
**SiteFileFetch.java l+*&:Q/
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package NetFox; GZip\S4Y
import java.io.*; A\fb<
import java.net.*; v{aq`uH
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public class SiteFileFetch extends Thread { .,0b E
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SiteInfoBean siteInfoBean = null; //文件信息Bean X]%itA
long[] nStartPos; //开始位置 *v
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long[] nEndPos; //结束位置 A A^{B
FileSplitterFetch[] fileSplitterFetch; //子线程对象 2ZcKK8X;7
long nFileLength; //文件长度 zK|i='XSf
boolean bFirst = true; //是否第一次取文件 c(#;_Ve2P
boolean bStop = false; //停止标志 MUnEuhXTr
File tmpFile; //文件下载的临时信息 [F!Y%Zp
DataOutputStream output; //输出到文件的输出流 w[tmCn+
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) vS\Nd1~ ?
public SiteFileFetch(SiteInfoBean bean) throws IOException ]hos+;4p
{ +{<#(}
siteInfoBean = bean; ^ D%FX!$
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ziPR>iz-
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ",6M)3{|c
if(tmpFile.exists ()) #>lG7Ns|4
{ 2i;7{7
bFirst = false; _g%TSumvq<
read_nPos(); Xpe)PXb
} %D$]VSP;
else 0:w"M<80
{ eET&pP3Rp
nStartPos = new long[bean.getNSplitter()]; AIMSX]m
nEndPos = new long[bean.getNSplitter()]; R^?/' dr
} 2c6g>?
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} 1 zw*/dp
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public void run() ZKHG !`X0
{ pRkP~ZISU
//获得文件长度 )nL`H^
//分割文件 svxw^0~a
//实例FileSplitterFetch 8NyJc"T<.
//启动FileSplitterFetch线程 [
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//等待子线程返回 kuyjnSo9i
try{ jCbV,0)^
if(bFirst) _SW3_8SuM.
{ ;r c`OZyE
nFileLength = getFileSize(); i&{DOI%w
if(nFileLength == -1) k0Ol*L!p
{ 2hzsKkrA
{
System.err.println("File Length is not known!"); {~Rk2:gx
} aDO!
else if(nFileLength == -2) y=?)n\f
{ ;>n,:355L
System.err.println("File is not access!"); AGLscf.
} i3rH'B-I.
else eek7=Z
{ |{CfWSB7~@
for(int i=0;i<nStartPos.length;i++) 8Z(Mvq]f&
{ :q#Xq;Wp
nStartPos = (long)(i*(nFileLength/nStartPos.length)); :Nofp&
} phM>.y_
for(int i=0;i<nEndPos.length-1;i++) |*}4 m'c
{ BD(Z5+EU1
nEndPos = nStartPos[i+1]; L4!{h|
} B95B|tU>.
nEndPos[nEndPos.length-1] = nFileLength; /!c${W!sY
} j4qJ.i
}
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//启动子线程 T}8Y6N<\m
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; z11O F
for(int i=0;i<nStartPos.length;i++) h5(4*$%
{ Hy^N!rBxfO
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), r zt Ru
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ZIQ
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nStartPos,nEndPos,i); hEp(A8g)bQ
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); j KoG7HH
fileSplitterFetch.start(); +0OLc2
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} ZpnxecJUJ
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), MdvcnaCG
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 9jw\s P@
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", V,cBk
nEndPos = " + nFileLength); +F^^c2E
// fileSplitterFetch[nPos.length-1].start(); \--8lH -K
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//等待子线程结束 [n:<8ho
//int count = 0; }hhGu\
//是否结束while循环 Y\No4w ^|d
boolean breakWhile = false; , GP?amh
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while(!bStop) >U[j]V]
{ %^ !,t:d
write_nPos(); JU)dr4S?
Utility.sleep(500); v_DedVhe
breakWhile = true; 5yP\I+Fm
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for(int i=0;i<nStartPos.length;i++) 8|\8O@
{ a6uJYhS~
if(!fileSplitterFetch.bDownOver) |>dI/_'
{ =w{Z@S(ukz
breakWhile = false; ?`PvL!'
break; lE4HM$p
} _sTROd)Vh
} )8$=C#qC[
if(breakWhile) ^G}47(
break; tM'P m
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//count++; ~kEI4}O
//if(count>4) }khV'6"'|
// siteStop(); ~v|>xqWV
} `u&Rsz&^
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System.err.println("文件下载结束!"); q1d}{DU
} 9,:l8
catch(Exception e){e.printStackTrace ();} -C(crn
} v0H@Eg_
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//获得文件长度 paCV!tP
public long getFileSize() %z,mB$LY
{ rWR}Stc@]
int nFileLength = -1; 7%x[q}
try{ ',JinE95
URL url = new URL(siteInfoBean.getSSiteURL()); ~d|A!S`
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); m8d!<
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httpConnection.setRequestProperty("User-Agent","NetFox"); Bf ~vA4
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int responseCode=httpConnection.getResponseCode(); G}b]w~ML~
if(responseCode>=400) #Y
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{ ix)M`F%P3
processErrorCode(responseCode); RC7]'4o
return -2; //-2 represent access is error 4NheWM6
} UCB/=k^m
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String sHeader; [\v}Ul
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for(int i=1;;i++) 1mOh{:1u
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); EyJJ0
//Utility.log(in.readLine()); (X\@t-8
sHeader=httpConnection.getHeaderFieldKey(i); JfLqtXF[&"
if(sHeader!=null) A$Hfr8w1u
{ R{<kW9!
if(sHeader.equals("Content-Length")) Q ayPo]O
{ jaII r06
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); v3~? ;f,l
break;
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} }ppN k:B
} <Tzrj1"Q3
else D9^h;
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break; n|Q@UPb/=
} 'YmIKIw
} g?goZPZB
catch(IOException e){e.printStackTrace ();} cQy2"vtU
catch(Exception e){e.printStackTrace ();} s>7}zU]
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Utility.log(nFileLength); nP$Ky1y G
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return nFileLength; Z'`<5A%;
} 0l )~i''
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//保存下载信息(文件指针位置) bzBEX mC
private void write_nPos() 4&<oFW\r
{ i[7\[
try{ ^}/PGG\~r
output = new DataOutputStream(new FileOutputStream(tmpFile)); le|~BG hL
output.writeInt(nStartPos.length); 89pEfl j2
for(int i=0;i<nStartPos.length;i++) %g{X ?
{ h7G"G"
// output.writeLong(nPos); V_:1EBzz
output.writeLong(fileSplitterFetch.nStartPos); 4;e5H_}Oo
output.writeLong(fileSplitterFetch.nEndPos); p& y<I6a,
} AYqX|
output.close(); ;DqWh0
} !;q&NHco
catch(IOException e){e.printStackTrace ();} _{I3i:f9X8
catch(Exception e){e.printStackTrace ();} +"\sc;6m.
} P+@/O
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//读取保存的下载信息(文件指针位置) 36}?dRw#p
private void read_nPos() o4G ?nvK-
{ CGW.I$u
try{ T*Y~\~Jhu
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); oK6tTK
int nCount = input.readInt(); ?GKb7Oj
nStartPos = new long[nCount]; >)fi^
nEndPos = new long[nCount]; q/4J.jL
for(int i=0;i<nStartPos.length;i++) 9UdM`v)(
{ rK' L6o
nStartPos = input.readLong(); EH+"~-v)ae
nEndPos = input.readLong(); gX@HO|.t
} >?2M
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input.close(); h5*JkRm
} ysQ_[
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catch(IOException e){e.printStackTrace ();} RIWxs Zt
catch(Exception e){e.printStackTrace ();} ugdQAg
} eBZXI)pPh
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private void processErrorCode(int nErrorCode) M'7f O3&|
{ M8MRoA6F
System.err.println("Error Code : " + nErrorCode); SE@LYeC}dE
} &47i"%
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//停止文件下载 cM(:xv
public void siteStop() OcR$zlgs[v
{ CpUkCgg
bStop = true; [\^n=
for(int i=0;i<nStartPos.length;i++) h]IxXP?h[
fileSplitterFetch.splitterStop(); 1OGx>J6
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} 1{)5<!9! l
} ~^NtO
//负责部分文件的抓取 .5^cb%B*
**FileSplitterFetch.java Zi *2nv'
*/ y;35WtDVb
package NetFox; x,=&JtKVc
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import java.io.*; ~8q)^vm>f?
import java.net.*; :}He\V
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public class FileSplitterFetch extends Thread { zU5v /'h>d
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