/* LP2~UVq
**SiteFileFetch.java F B]Y~;(
*/ ZT0\V
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package NetFox; 1[FN: hm
import java.io.*; 02;jeZ#z
import java.net.*; acd[rjeT
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public class SiteFileFetch extends Thread { O0 'iq^g
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SiteInfoBean siteInfoBean = null; //文件信息Bean g'"~'
long[] nStartPos; //开始位置 mQ"~x]
long[] nEndPos; //结束位置
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FileSplitterFetch[] fileSplitterFetch; //子线程对象 Q:}]-lJg
long nFileLength; //文件长度 w#A)B<Y/"
boolean bFirst = true; //是否第一次取文件 >)>f~ >
boolean bStop = false; //停止标志 -F 5BJk
File tmpFile; //文件下载的临时信息 djd/QAfSC
DataOutputStream output; //输出到文件的输出流 'Y38VOI%
}vndt*F
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ':*H#}Br-#
public SiteFileFetch(SiteInfoBean bean) throws IOException U3(+8}Q
{ Ji4p6$ .j-
siteInfoBean = bean; 7J'%;sH
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Kk3+ ]W<
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); $8tk|uh
if(tmpFile.exists ()) !T6R[
{ `4Yo-@iVP
bFirst = false; `#""JTA"
read_nPos(); oC0ndp~+&
} X9x`i
else FI.te3i?7
{ H$![]Ujq
nStartPos = new long[bean.getNSplitter()]; w~lH2U'k}
nEndPos = new long[bean.getNSplitter()]; `7"="T~ *
} lC<;Q*Y
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} HC iRk1
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public void run() x,B] J4
{ m2]N%Y
//获得文件长度 YWZ;@,W
//分割文件 ImXYI7PL
//实例FileSplitterFetch (W1$+X
//启动FileSplitterFetch线程 <jh4P!\&j
//等待子线程返回 ^<I(
try{ L2H
if(bFirst) w~Tg?RH:
{ yw1&I^7
nFileLength = getFileSize(); {
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if(nFileLength == -1) zPt<b!q
{ &Ok1j0~~
System.err.println("File Length is not known!"); t. P@Ba^
} FnvpnU",
else if(nFileLength == -2) c^}y9% 4c
{ ,54z9F`
System.err.println("File is not access!"); :i.@d?
} qb>ULP0
else W[2]$TwT
{ |UTajEL
for(int i=0;i<nStartPos.length;i++) ;(C<gt,r}
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); oE 'P
} *HoRYCL
for(int i=0;i<nEndPos.length-1;i++) bRAD_
{ (&}[2pb!
nEndPos = nStartPos[i+1]; :[0 R F^2}
} (b25g!
nEndPos[nEndPos.length-1] = nFileLength; Q-7?'\h
} Iz0$T.T
} 25>R^2,LiE
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//启动子线程 '1mk;%
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; .a4,Lr#q.
for(int i=0;i<nStartPos.length;i++) |ADf~-AY
{ dl4n-*h
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), }3
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 4=Th<,<
nStartPos,nEndPos,i); c
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); u)@:V)z
fileSplitterFetch.start(); A
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} `~XksyT
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), jQ{ @ol}n
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); h>pu^ `hk
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", D{(}&8a9
nEndPos = " + nFileLength); ajSB3}PN
// fileSplitterFetch[nPos.length-1].start(); 0qS/>u*
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//等待子线程结束 UarLxPQ
//int count = 0; 8pnD6Lp>
//是否结束while循环 ?UsCSJ1V
boolean breakWhile = false; 505c(+
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while(!bStop) ad}8~6}_&
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write_nPos(); W&hW N9iR
Utility.sleep(500); riW9l6s'
breakWhile = true; .i*oZ'[X
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for(int i=0;i<nStartPos.length;i++) d*8*9CpO:
{ <tvLKx
if(!fileSplitterFetch.bDownOver) Jl_W6gY"Z
{ 6Z|h>H5a
breakWhile = false; 7qqzL_d>
break; P!79{ 8
} qur2t8gnxq
} UF-&L:s[
if(breakWhile) yksnsHs}d
break; 7(}'jZ
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//count++; }U8v
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//if(count>4) %,WH*")
// siteStop(); yeiIP
} CHGa_
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System.err.println("文件下载结束!"); K 4GuOl
} (RFH.iX
catch(Exception e){e.printStackTrace ();} VpJKH\)Rt(
} x3i}IC
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//获得文件长度 j&X&&=
public long getFileSize() e*Wk;D&
{ wp@_4Iq1$
int nFileLength = -1; 8?iI;(
try{ 3RaW\cWzg
URL url = new URL(siteInfoBean.getSSiteURL()); ~B|m"qY{i
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); J$}]p
httpConnection.setRequestProperty("User-Agent","NetFox"); x|m9?[
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int responseCode=httpConnection.getResponseCode(); >e {1e
if(responseCode>=400) c:m=9>3
{ :^ywc O
processErrorCode(responseCode); 'S3<' X
return -2; //-2 represent access is error 2VRGTx
} t.8r~2(?
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String sHeader; <7]HM5h
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for(int i=1;;i++) fk,Vry
{ e ymv/
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Rq}lW.<r
//Utility.log(in.readLine()); \'Ae,q|w
sHeader=httpConnection.getHeaderFieldKey(i); y nmjIQ
if(sHeader!=null) <kFLwF?PM'
{ [XY%<P3D
if(sHeader.equals("Content-Length")) *:yG)J 3F
{ }PJsPIa3j
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ^($'l)I
break; kY$EK]s
} ]P3m=/w
} +7b8 ye
else aB6xRn9
break; CIIjZ)T
} 0FOB5eBR
} tq59w
catch(IOException e){e.printStackTrace ();} ;+wB!/k,
catch(Exception e){e.printStackTrace ();} r+ bGZ
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Utility.log(nFileLength); m'NAM%$}J
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return nFileLength; n- 2X?<_Z
} W q<t+E[
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//保存下载信息(文件指针位置) P{9:XSa%
private void write_nPos() U:TkO=/>:
{ g.&B8e
try{ C{bxPILw
output = new DataOutputStream(new FileOutputStream(tmpFile)); ~^obf(N`
output.writeInt(nStartPos.length); Y ]([K.I=
for(int i=0;i<nStartPos.length;i++) FC1rwXL(
{ ~Y/A]N86,
// output.writeLong(nPos); C*2%Ix18+N
output.writeLong(fileSplitterFetch.nStartPos); t.ulG
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output.writeLong(fileSplitterFetch.nEndPos); W p)!G
} ;NA5G:eQ
output.close(); iI<c
} zgGysjV
catch(IOException e){e.printStackTrace ();}
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catch(Exception e){e.printStackTrace ();} ya&=UoI
} mEJ7e#
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//读取保存的下载信息(文件指针位置) 9:{<