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**SiteFileFetch.java y:A0!75
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package NetFox; 2YN`:"
import java.io.*; Y=rr6/k
import java.net.*; s{k\1P(G}
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public class SiteFileFetch extends Thread { t~M<j|]k
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SiteInfoBean siteInfoBean = null; //文件信息Bean o(``7A@7a
long[] nStartPos; //开始位置 epbp9[`
long[] nEndPos; //结束位置 xI<dBg|]+
FileSplitterFetch[] fileSplitterFetch; //子线程对象 `e9uSF:9C
long nFileLength; //文件长度 dI!/:x
boolean bFirst = true; //是否第一次取文件 =CVT8(N*
boolean bStop = false; //停止标志 +wUhB\F
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File tmpFile; //文件下载的临时信息 -$)Et |
DataOutputStream output; //输出到文件的输出流 "<2bjy
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) o3yqG#dA
public SiteFileFetch(SiteInfoBean bean) throws IOException "?{yVu~9
{ 7:L~n(QpP
siteInfoBean = bean; '&QT}B
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 0X?fDz}jd
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); .O#lab`:2
if(tmpFile.exists ()) E)hinH
{ 9-Qtj49
bFirst = false; C%c `@="b
read_nPos(); na3kHx@
} WHZng QmY
else SU'1#$69F
{ "|'`'W
nStartPos = new long[bean.getNSplitter()]; x#0@$
nEndPos = new long[bean.getNSplitter()]; $M`;."
} 02^(z6K'&?
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} W>s'4C`
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public void run() jN}7BbX
{ +@uC:3jM
//获得文件长度 {}o>nenx\
//分割文件 p\_qHq\;j
//实例FileSplitterFetch U9o*6`"o
//启动FileSplitterFetch线程 =Xjuz:9D~
//等待子线程返回 8Qz7uPq
try{ d+2O^of:T
if(bFirst) *@arn Eu
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nFileLength = getFileSize(); z){UuiUM+=
if(nFileLength == -1) '}`hY1v
{ SfobzX}~Jh
System.err.println("File Length is not known!"); ?SO F
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} wwcwYPeg
else if(nFileLength == -2) 06@0r
{ /^33 e+j
System.err.println("File is not access!"); M}oj!xGB
} 9;Pu9s[q2
else ms\/=96F
{ dezL{:Ya
for(int i=0;i<nStartPos.length;i++) D
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{ HA.NZkq.tV
nStartPos = (long)(i*(nFileLength/nStartPos.length)); cevV<Wy+
} Q xF8=p
for(int i=0;i<nEndPos.length-1;i++) DET!br'z5
{ 4fu\3A&
nEndPos = nStartPos[i+1]; Go+xL/f
} %M)oHX1p
nEndPos[nEndPos.length-1] = nFileLength; 9Oo*8wvGG
} fpK0MS]=b
} Ul713Bjz
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//启动子线程 9 /Ai(
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; GE~(N N
for(int i=0;i<nStartPos.length;i++) K?Xo3W%K
{ ^z%o];
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), P$6f +{
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), i3 l #~
nStartPos,nEndPos,i); &X]=Qpl
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); @Uj_+c
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fileSplitterFetch.start(); qtwT#z;Y
} :&1=8^B Y
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), itC *Z6^
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); kk/+Vx~
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Ss<_K>wk
nEndPos = " + nFileLength); K*_{Rs0P
// fileSplitterFetch[nPos.length-1].start(); fs3-rXoB
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//等待子线程结束 !7kLFW
//int count = 0; n<%=~1iY+
//是否结束while循环 LA;V}%y?
boolean breakWhile = false; .,ppGc|*
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while(!bStop) vNK`Y|u@
{ g]==!!^<D
write_nPos(); (ifqwl62
Utility.sleep(500); ){:q;E]^fB
breakWhile = true; qr'x0r|<>
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for(int i=0;i<nStartPos.length;i++) /Oq)3fU
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{ `bZ2x@
if(!fileSplitterFetch.bDownOver) /jZaU`
{ &Hlm{FHU
breakWhile = false; q:2aPfo&
break; e>?_)B4
} B8cBQ v
} {?@t/.4[W3
if(breakWhile) ;T5,T
break; "}'8`k+d
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//count++; -~vl+L
//if(count>4) IFd )OZ5
// siteStop(); fCt^FU
} "<PoJPh
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System.err.println("文件下载结束!"); IgPV#
} 3d,-3U
catch(Exception e){e.printStackTrace ();} #D|!
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} 3bbp>7V!
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//获得文件长度 ZdE>C
public long getFileSize() e-[>( n/[
{ _o@(wGeu#
int nFileLength = -1; ]dPVtk
try{ rao</jN.9
URL url = new URL(siteInfoBean.getSSiteURL()); F[>7z3I
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 1fz*SIjG
httpConnection.setRequestProperty("User-Agent","NetFox"); U}tl_5%)
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int responseCode=httpConnection.getResponseCode(); >.DF"]XM
if(responseCode>=400) B<|:K\MA
{ OOEV-=
processErrorCode(responseCode); qn2o[x
return -2; //-2 represent access is error !MZ+- dpK
} ZWf-X
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String sHeader; O0@w(L-
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for(int i=1;;i++) GE%2/z p
{ RY9+ 9i
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); xj0cgK|!
//Utility.log(in.readLine()); ,/i_QgP
sHeader=httpConnection.getHeaderFieldKey(i); F0@Qgk]\
if(sHeader!=null) FJO"|||Y'|
{ .CVUEK@Z4
if(sHeader.equals("Content-Length")) C@*%AY
{ S3SV.C:z>
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ?QGmoQ)
break; z)5S^{(
} ! mm5I#s
} Ds{{J5Um%
else ?3`q+[:
break; PKi_Zh.D
}
}c}
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} >4,{6<|
catch(IOException e){e.printStackTrace ();} pJd 0k"{
catch(Exception e){e.printStackTrace ();} L'>s(CR
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Utility.log(nFileLength); mKV'jm0
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return nFileLength; "LOnDa7E^
} Yj)
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//保存下载信息(文件指针位置) )7W6-.d
private void write_nPos() qtHfz"p
{ K'NcTw#f
try{ 9SY(EL
output = new DataOutputStream(new FileOutputStream(tmpFile)); NH'iR!iGo
output.writeInt(nStartPos.length); wy''tqg6
for(int i=0;i<nStartPos.length;i++) Rvvh{U;t
{ &Cq{
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// output.writeLong(nPos); z!:'V]
output.writeLong(fileSplitterFetch.nStartPos); ^|aNG`|O
output.writeLong(fileSplitterFetch.nEndPos); co/7l sW
} " \:ced
output.close(); "IG+V:{ou
} +3Y!xD?=
catch(IOException e){e.printStackTrace ();} 2/@D7>F&g
catch(Exception e){e.printStackTrace ();} O-j$vzHpdY
} 8a9RML}G<
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//读取保存的下载信息(文件指针位置) n>P!u71
private void read_nPos() 7UKYmJk.
{ }~Q5Y3]#~
try{ Q2eXK[?*
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); L,~MicgV
int nCount = input.readInt(); 6Nt$ZYS
nStartPos = new long[nCount]; c&f
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nEndPos = new long[nCount]; 1TjZ#yP%1
for(int i=0;i<nStartPos.length;i++) aX^+ O,
{ 9cQ_mgch
nStartPos = input.readLong(); nLy#|C
nEndPos = input.readLong(); Qw?+!-7TN
} C c*({
input.close(); tWY2o3j
} ''S&e
catch(IOException e){e.printStackTrace ();} LmQ/#Gx
catch(Exception e){e.printStackTrace ();} K;U39ofW
} WA.AFt
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private void processErrorCode(int nErrorCode) $%PVJs
{ e"Rm_t
System.err.println("Error Code : " + nErrorCode); %y"J8;U
} \ZD[!w7
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//停止文件下载 5|w&dM
public void siteStop() ~ y;y(4<
{ 8$vK5Dnn8
bStop = true; <y)E>Fl
for(int i=0;i<nStartPos.length;i++) +l?; )
fileSplitterFetch.splitterStop(); Yv)aAWEa
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} ALGgAX3t
} c8A`<-\MfB
//负责部分文件的抓取 V5"HwN+`
**FileSplitterFetch.java IfV
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*/ q0O&UE)6Y
package NetFox; 0JY WrPR
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import java.io.*; %f&< wC
import java.net.*; SwH2$:f
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public class FileSplitterFetch extends Thread { :b/jNHJU
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String sURL; //File URL h`5)2n+ P
long nStartPos; //File Snippet Start Position >dQ K.CG
long nEndPos; //File Snippet End Position N/~N7MwJj
int nThreadID; //Thread's ID |(% u}V?
boolean bDownOver = false; //Downing is over .px:e)iW
boolean bStop = false; //Stop identical *'ZN:5%H
FileAccessI fileAccessI = null; //File Access interface Vhg1/EgUr
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException l@~LV}BI
{ @Doyt{|T
this.sURL = sURL; xiM&$<LpR
this.nStartPos = nStart; IFuZ]CBz
this.nEndPos = nEnd; X-JV'KE}^z
nThreadID = id; TGV
fileAccessI = new FileAccessI(sName,nStartPos);//定位 UAYd?r
} c[cAUsk i
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public void run() #DI$Oc
{ &