/* W({TC
**SiteFileFetch.java A9l})_~i
*/ {_XrZ(y/
package NetFox; o;4e)tK
import java.io.*; BT#=Xh
import java.net.*; k3>ur>aW
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public class SiteFileFetch extends Thread { AOlt,MNpQ
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SiteInfoBean siteInfoBean = null; //文件信息Bean hQ}7Z&O
long[] nStartPos; //开始位置 c\)&yGE
long[] nEndPos; //结束位置 Xvj=*wg\Y
FileSplitterFetch[] fileSplitterFetch; //子线程对象 f UF;SqT
long nFileLength; //文件长度 ?(/j<,m^
boolean bFirst = true; //是否第一次取文件 mDF"&.(j
boolean bStop = false; //停止标志 seuN,jpt
File tmpFile; //文件下载的临时信息 ]a6O(]
DataOutputStream output; //输出到文件的输出流 FfxX)p1t
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) GtM(
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public SiteFileFetch(SiteInfoBean bean) throws IOException 7}'A)C>J;
{ Vvyrty
siteInfoBean = bean; 33<fN:J]f
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); e@:P2(WWl
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ?l,
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if(tmpFile.exists ()) qH
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{ q]N?@l]
bFirst = false; }>;ht5/i/
read_nPos(); wHOlj)CZ
} o\]:!#r{T
else cF_;hD|YZ
{ FS`vK`'
nStartPos = new long[bean.getNSplitter()]; \7t5U7v8U
nEndPos = new long[bean.getNSplitter()]; `?]rr0.}hp
} uojh%@.4
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} %]chL.s
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public void run() xz"Z3B
{ ke}Y2sB
//获得文件长度 ,ykPQzO
//分割文件 4FIV
//实例FileSplitterFetch 3"'# |6O9
//启动FileSplitterFetch线程 bvipbf[m<
//等待子线程返回 QOT)x4!)
try{ Ns.3s7&
if(bFirst) r*6"'W>c6
{ ;V(H7
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nFileLength = getFileSize(); BEXQTM3])I
if(nFileLength == -1) h"u<E\g
{ 9U|<q
System.err.println("File Length is not known!"); y8w0eq94
} msc 1^2
else if(nFileLength == -2)
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{ ,C{^`Bk-W
System.err.println("File is not access!"); ~JwpNJs
} ShWHHU(QQ
else Jt2,LL:G
{ /lLov.
for(int i=0;i<nStartPos.length;i++) ` URSv,(
{ 8"km_[JE e
nStartPos = (long)(i*(nFileLength/nStartPos.length)); c$Xe.:QY
} (VYR!(17
for(int i=0;i<nEndPos.length-1;i++) 9Hf*cQ
{ cW)Oi^q%o2
nEndPos = nStartPos[i+1]; h_&4p=SQ
} L289'Gzg
nEndPos[nEndPos.length-1] = nFileLength; U@.u-)oX
} ;RWW+x8IB
} 8%o~4u3
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//启动子线程 2Vp>"
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; X,RT<GNNb
for(int i=0;i<nStartPos.length;i++) (TEo_BW|+
{ 87^:<\pp
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), \npz.g^c_
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), W\it+/
nStartPos,nEndPos,i); ;".z[l *
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); klgv{_b
fileSplitterFetch.start(); 9?uqQ
} :O9P(X*
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), koOy Z>
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); jrm0@K+<IA
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", H<`^w)?
nEndPos = " + nFileLength); 2X|CuL{]
// fileSplitterFetch[nPos.length-1].start(); O.*jR`l
{
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//等待子线程结束 ~TYbP
//int count = 0; o" |O
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//是否结束while循环 .aNO( /kO
boolean breakWhile = false; j#N(1}r=1
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while(!bStop) luW
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write_nPos(); (E!%v`_0
Utility.sleep(500); |/@0~O(6
breakWhile = true; xME(B@j
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for(int i=0;i<nStartPos.length;i++) o;3j:#3 |
{ fO*)LPen.z
if(!fileSplitterFetch.bDownOver) "
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{ <O ;&qT*b
breakWhile = false; qh%i5Mu
break; oG!6}5
} ~6p5H}'H1
} 6|QTS|!
if(breakWhile) P,(9cyS{
break; ~\2;i]|
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//count++; t-_#Q bzE{
//if(count>4) XmP;L(wa
// siteStop(); avlqDi1l
} F
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System.err.println("文件下载结束!"); <BSSa`N`
} rB,ldy,f
catch(Exception e){e.printStackTrace ();} > gr<^$
} O{~KR/
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//获得文件长度 Q*gnAi&.#
public long getFileSize() D>P;Izb
{ }@wVW))6$
int nFileLength = -1; #+$ zE#je
try{ ?fV?|ZGZI
URL url = new URL(siteInfoBean.getSSiteURL()); {o( *
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); G(3;;F7"
httpConnection.setRequestProperty("User-Agent","NetFox");
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int responseCode=httpConnection.getResponseCode(); 6;gLwOeOHY
if(responseCode>=400) 1t.R+1[c
{ 6Z Xu,ks}
processErrorCode(responseCode); x.ba|:5
return -2; //-2 represent access is error l_6e I
} z?)He)d
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String sHeader; 7SaiS_{:
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for(int i=1;;i++) sdrWOq
{ )AI?x@
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); "TfI+QgLF
//Utility.log(in.readLine()); !~)90Z!
sHeader=httpConnection.getHeaderFieldKey(i); u\f3qc,]F
if(sHeader!=null) B_hPcmB
{ d.p'pGL
if(sHeader.equals("Content-Length"))
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{ =5?.'XMk
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); `%Q&</X
break; wqP2Gw7jh6
} >VP5vkv=
} z|I0-1tAK
else dq(E&`SzK
break; i3P9sdTD
} Hs$'0:
} `^x9(i/NE
catch(IOException e){e.printStackTrace ();} H'Nq#K
catch(Exception e){e.printStackTrace ();} Jld\8=
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Utility.log(nFileLength); >k;p.Pay%
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return nFileLength; KzNm^^#/$A
} { D+Ym%n
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//保存下载信息(文件指针位置) ^^U%cu Kg
private void write_nPos() !>3LGu,
{ ;}K62LSR
try{ 6J\fF tB@V
output = new DataOutputStream(new FileOutputStream(tmpFile)); RU|X*3";T
output.writeInt(nStartPos.length); i'=2Y9S}
for(int i=0;i<nStartPos.length;i++) ,:UX<6l
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{ q_sEw~~@!
// output.writeLong(nPos); a.q;_5\5`
output.writeLong(fileSplitterFetch.nStartPos); x#r<,uNn,
output.writeLong(fileSplitterFetch.nEndPos); nR[^|CAR
} rEM#D]k
output.close(); at|
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} H:Y&OZ
catch(IOException e){e.printStackTrace ();} [1SMg$@<
catch(Exception e){e.printStackTrace ();} |cgui
} cS(;Qs]Q
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//读取保存的下载信息(文件指针位置) 8vSIf+
private void read_nPos() hF>u)%J/S
{ @PX\{6&
try{ 2"X~ju
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); id?E)Jy
int nCount = input.readInt(); 2.nE
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nStartPos = new long[nCount]; <