/* <Cn-MOoM
**SiteFileFetch.java PL%_V ?z
*/ BEifUgCh
package NetFox; z/6eP`jj
import java.io.*; O6lj^
import java.net.*; DoNbCVZ
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public class SiteFileFetch extends Thread { vezX/x D?
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SiteInfoBean siteInfoBean = null; //文件信息Bean m~#98ZJ^
long[] nStartPos; //开始位置 NR^z!+oSR
long[] nEndPos; //结束位置 T+N%KRl
FileSplitterFetch[] fileSplitterFetch; //子线程对象 V 7%rKK
long nFileLength; //文件长度 97'*Xq
boolean bFirst = true; //是否第一次取文件 V= !!;KR0
boolean bStop = false; //停止标志 |u7vY/
File tmpFile; //文件下载的临时信息 4~DFtWbf
DataOutputStream output; //输出到文件的输出流 hSo\
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) b":cj:mxL
public SiteFileFetch(SiteInfoBean bean) throws IOException YM/GSSq
{ Rb|\!
siteInfoBean = bean; Th'6z#h:U
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); :hCp@{
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); OAR#* ~q
if(tmpFile.exists ()) 7p@qzE
{ /wH]OD{
bFirst = false; iK= {pd
read_nPos(); 3dQV5E.
} I[@}+p0
else N[z7<$$
{ /
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nStartPos = new long[bean.getNSplitter()]; 5e6]v2 k
nEndPos = new long[bean.getNSplitter()]; IF$f^$
} $IUT5Gia`
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} b P4R
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public void run() 1^b-J0
{ _Cj u C`7
//获得文件长度 AQQeLdTq
//分割文件 s(r(! FZ
//实例FileSplitterFetch ]fnc.^{
//启动FileSplitterFetch线程 o!gl
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//等待子线程返回 =K-B
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try{ BC9rsb
if(bFirst) <Gr{h>b
{ Qt+ K,LY
nFileLength = getFileSize(); -|"mB"Dc
if(nFileLength == -1) q}U^H
{ }{ J<Wzw
System.err.println("File Length is not known!"); R<a7TkL4?
} RxjC sjg
else if(nFileLength == -2) +F]X
{ /P Qz$e-!Y
System.err.println("File is not access!"); (kK6=Mrf
} #\GWYWkR
else a=.A/;|0*
{ "z1\I\
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for(int i=0;i<nStartPos.length;i++) GxuFO5wz
{ sFT-aLpL@V
nStartPos = (long)(i*(nFileLength/nStartPos.length)); )F8G q,
} r**u=q%p
for(int i=0;i<nEndPos.length-1;i++) 4S`2")V
{ Fi14_{
nEndPos = nStartPos[i+1]; [x
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} #9F=+[L
nEndPos[nEndPos.length-1] = nFileLength; j[.R|I|
} >MauuL,.j
} ts<5%{M(
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//启动子线程 C1:efa<wV
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Cb%?s
for(int i=0;i<nStartPos.length;i++) oe=^CeW"
{ 4. 7m*
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), _{_ybXG|
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), RLu y;z
nStartPos,nEndPos,i); [nZ3}o
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); pd?3_yU
fileSplitterFetch.start(); BA4qQCS;5
} }S\ \"SBC
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), _?x*F?5=
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); b%IRIi&,
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", m-xSF]q=<
nEndPos = " + nFileLength); PO%Z.ol9
// fileSplitterFetch[nPos.length-1].start(); ,edX;`#
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//等待子线程结束 F4xYfbwY"]
//int count = 0; R^.E";/h
//是否结束while循环 k|(uIU* ]
boolean breakWhile = false; F*_g3K!!
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while(!bStop) K;a]+9C
{ *e&OpVn
write_nPos(); &U^6N+l9
Utility.sleep(500); rvgArFf}]
breakWhile = true; ]?whx&+
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for(int i=0;i<nStartPos.length;i++) OSY$qL2
{ 'H+H4(
if(!fileSplitterFetch.bDownOver) _WO*N9Iz
{ ..`J-k
breakWhile = false; hK5BOq!y
break; tgCEz%
} se(ZiyHp
} D[yOFJ~p)
if(breakWhile) j
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break; .Zv@iL5
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//count++; 00X~/'!
//if(count>4) Wnm?a!j5
// siteStop(); UIPi<_Xa
} owM3Gz%?UA
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System.err.println("文件下载结束!"); scZdDbL6+
} N/IDj2C4
catch(Exception e){e.printStackTrace ();} XUTI0
} CT(VV6I\
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//获得文件长度 do@`(f3g
public long getFileSize() fG_.&!P
{ hfw$820y[
int nFileLength = -1; \Jq$!foYx
try{ ^x8*]Sz#x
URL url = new URL(siteInfoBean.getSSiteURL()); }q7rR:g
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ;;#28nV
httpConnection.setRequestProperty("User-Agent","NetFox"); //T1e7)
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int responseCode=httpConnection.getResponseCode(); /Z`("X?_Kf
if(responseCode>=400) E_k<EQ%r
{ LE#ko2#ke
processErrorCode(responseCode); &Z3g$R 9
return -2; //-2 represent access is error 6a$=m3ic
} x$ z9:'U
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String sHeader; ,rkY1w-
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for(int i=1;;i++) $<'i+kK
{ LE$_qX`L
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); QlT{8uw)
//Utility.log(in.readLine()); |-t>_+. J'
sHeader=httpConnection.getHeaderFieldKey(i); 1o5n1
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if(sHeader!=null) hr9rI
{ qbcaiU`-^"
if(sHeader.equals("Content-Length")) r: Ij\YQ
{ 2GB)K?1M
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); /BeA-\B
break; 2UqLV^ZY
} EMK>7 aks
} B.
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else "*E06=fiG
break; YhQ;>Ko
} =SMI,p&
} -CePtq`
catch(IOException e){e.printStackTrace ();} .&Tcds
catch(Exception e){e.printStackTrace ();} n~`1KC4
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Utility.log(nFileLength); `?@7T-v
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return nFileLength; _OR@S%$
} l@:|OGD;8
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//保存下载信息(文件指针位置) Y'n+,g
private void write_nPos() j'xk[bM
{ F<R+]M:fa
try{ fSR+~Vy
output = new DataOutputStream(new FileOutputStream(tmpFile)); x$p_mWC
output.writeInt(nStartPos.length); /4K ^-
for(int i=0;i<nStartPos.length;i++) BF >678h
{ D=ZH? d
// output.writeLong(nPos); "}/$xOl"
output.writeLong(fileSplitterFetch.nStartPos); :<Z>?x
output.writeLong(fileSplitterFetch.nEndPos); :`U@b
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} ,e]|[,r#5
output.close(); YC,s]~[[
} (tY0 /s
catch(IOException e){e.printStackTrace ();} uB&um*DP
catch(Exception e){e.printStackTrace ();} }\
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} |/!3 N
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//读取保存的下载信息(文件指针位置) ONr}{T%@/
private void read_nPos() 8Qm%T7]UFb
{ k+nfW]UNF
try{ ?7?hDw_Nk
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Ih RWa|{I
int nCount = input.readInt(); I;u1mywd
nStartPos = new long[nCount]; <.d^jgG(j
nEndPos = new long[nCount]; xJ=@xfr$
for(int i=0;i<nStartPos.length;i++) 9|('*
{ mT:Z!sS
nStartPos = input.readLong(); "~:AsZ"7
nEndPos = input.readLong(); <4{Jm8zJ
} uC2-T5n'
input.close(); O%hmGW4
} Qf=+%-$Y
catch(IOException e){e.printStackTrace ();} S!Z2aFj
catch(Exception e){e.printStackTrace ();} ^*-6PV#Z
} 6!& DH#M
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private void processErrorCode(int nErrorCode) PP1?UT=]
{ * |dz.Tr
System.err.println("Error Code : " + nErrorCode); j*7#1<T
} -9f+O^x
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//停止文件下载 o$Jop"To
public void siteStop() C*C;n4 AT
{ Of@LEEh6
bStop = true; \x(ILk|'c
for(int i=0;i<nStartPos.length;i++) Tl/!Dn
fileSplitterFetch.splitterStop(); ()\=(n!J
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} &xg