/* #TY[\$BHs
**SiteFileFetch.java yvKKE
*/ K;(t@GL?
package NetFox; JuXuS
import java.io.*; 1VO>Bh.Wm
import java.net.*; g6<D 1r
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public class SiteFileFetch extends Thread { }kb6;4>c
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SiteInfoBean siteInfoBean = null; //文件信息Bean TInp6w+u
long[] nStartPos; //开始位置 se]QEd7]7
long[] nEndPos; //结束位置 ln=:E$jX
FileSplitterFetch[] fileSplitterFetch; //子线程对象 YU%U
long nFileLength; //文件长度 L)/^%/!
boolean bFirst = true; //是否第一次取文件 ]Saw}agE[%
boolean bStop = false; //停止标志 [%BWCd8Q~P
File tmpFile; //文件下载的临时信息 e5.sqft
DataOutputStream output; //输出到文件的输出流 FKu^{'Y6E0
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ST^{?Q
public SiteFileFetch(SiteInfoBean bean) throws IOException o^&nkR
{ 6ALUd^
siteInfoBean = bean; tY$4k26
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); }h_=
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tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); '9q:gFO
if(tmpFile.exists ()) nM&UdKf3
{ ,L7:3W
bFirst = false; *v9 {f?
read_nPos(); GxcW^{;
} 8AVG pL
else ALnE[}N6,
{ 5Lm<3:7Q+
nStartPos = new long[bean.getNSplitter()]; 3r,^is
nEndPos = new long[bean.getNSplitter()]; /s~&$(d59o
} \I`g[nT|
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} S.A|(?x
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public void run() cu$i8$?t
{ $79-)4;z4
//获得文件长度 *Wz\FixP0
//分割文件 b R;Wf5
//实例FileSplitterFetch LuW^Ga"E
//启动FileSplitterFetch线程 ,Taq~
//等待子线程返回 23WlUM
try{ b&Go'C{p
if(bFirst) d<B=p&~
{ K_E- Hgg_
nFileLength = getFileSize(); 7[u$!.4{*
if(nFileLength == -1) : yC|Q)
{ WL/9r
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System.err.println("File Length is not known!"); "f<+~
} W0>fu>
else if(nFileLength == -2) )MJy
{ GjvTYg~
System.err.println("File is not access!"); (dVrGa54
} :#zv,U&OC
else ?3+>% bO
{ 0I@Cx{$
for(int i=0;i<nStartPos.length;i++) ac??lHtH9
{ `SSUQ#@
nStartPos = (long)(i*(nFileLength/nStartPos.length)); @&M$oI$4*
} 0vm}[a4+i;
for(int i=0;i<nEndPos.length-1;i++) JqYt^,,Q:
{ vAp?Zl?g
nEndPos = nStartPos[i+1]; uA2-&smw
} ^L;k
nEndPos[nEndPos.length-1] = nFileLength; Q.Ljz
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} &SE+7HXw
} 5!)_"u3
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//启动子线程 mMRdnf!Uid
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; /*yPy?
for(int i=0;i<nStartPos.length;i++) a2N4Jg@
{ 4\%XC
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), mrz@Y0mgL
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ngHPOI16
nStartPos,nEndPos,i); LQrm/)4bF5
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Ghpk0ia%d
fileSplitterFetch.start(); eEG]JH
} [r5k8TB1
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Jz6,2,LN
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); '}q1 F<&
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", &k2nt
nEndPos = " + nFileLength); znl_~:.4]X
// fileSplitterFetch[nPos.length-1].start(); Tx'ctd#Y
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//等待子线程结束 ^ M4-O~
//int count = 0; ~
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//是否结束while循环 kwd)5J
boolean breakWhile = false; X@n\~[.B
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while(!bStop) HGjGV]N5
{ #Qp.O@e
write_nPos(); SZm)`r\A
Utility.sleep(500); W=k%aB?p
breakWhile = true; K2GcU_*t
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for(int i=0;i<nStartPos.length;i++) !bi}9w
{ 9k@`{+wmZ
if(!fileSplitterFetch.bDownOver) X519}
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{ Qb;5:U/x
breakWhile = false; SAEV "
break; 32sb$|eQq
} $q6'VLPo
} s *B-|
if(breakWhile) }@V,v[&e
break; dn1Tu6f;|
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//count++; Hf'yRKACj
//if(count>4) @Sl!p)
// siteStop(); j>0~"A
} 9#;UQ.qA
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System.err.println("文件下载结束!"); ^:RDu q
} Nh[{B{k
catch(Exception e){e.printStackTrace ();} Q4;br?2H
} RO"*&o'K'
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//获得文件长度 Tcglt>tj"
public long getFileSize() [[[QBplJ
{ {:3XP<hqN
int nFileLength = -1; (Rc0 l;
try{ U "qO&;m
URL url = new URL(siteInfoBean.getSSiteURL()); ]PnE%
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ~"*;lT5KX
httpConnection.setRequestProperty("User-Agent","NetFox"); B43o_H|s
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int responseCode=httpConnection.getResponseCode(); Vo%UiVHy
if(responseCode>=400) diLjUC`69
{ D^Z~>D6
processErrorCode(responseCode); A_t<SG5
return -2; //-2 represent access is error O;A/(lPW+
} Hf/2KYZ
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String sHeader; T'*.LpNP,
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for(int i=1;;i++) (8r?'H8ZO
{ IpxFME%!
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Q#bFW?>y,
//Utility.log(in.readLine()); )W@H
sHeader=httpConnection.getHeaderFieldKey(i); ^saJfr x
if(sHeader!=null) 5m+:GiI
{ g"3h#SMb
if(sHeader.equals("Content-Length")) ,
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{ uREc9z`Q'
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ~P5!VNJ;r
break; Ej1 [ry
} Dz&4za+{
} b)u9#%Q
else ``kKi3TWJ
break; r)mm8MI!Z
} qR_"aQ7s2
} UY**3MK
catch(IOException e){e.printStackTrace ();} ZUyM:$
catch(Exception e){e.printStackTrace ();} zYOPE 6E
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Utility.log(nFileLength); WII_s|YSt%
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return nFileLength; lb1(1|#
} pAmTwe
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//保存下载信息(文件指针位置) LFSOHJj
private void write_nPos() su=.4JcK
{
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try{ sZ'3PNpCP
output = new DataOutputStream(new FileOutputStream(tmpFile)); ?NI)3-l
output.writeInt(nStartPos.length); %!rsu-W:Y
for(int i=0;i<nStartPos.length;i++) ,XP9NHE
{ i=2+1;K
// output.writeLong(nPos); UsQv!Cwu^
output.writeLong(fileSplitterFetch.nStartPos); 2$NP46z}
output.writeLong(fileSplitterFetch.nEndPos); RpLm'~N'
} O!f* @
output.close(); McnP>n
} XB;;OP12
catch(IOException e){e.printStackTrace ();} 4r(rWlM
catch(Exception e){e.printStackTrace ();} ]Ly)%a32
} 'd?8OV
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//读取保存的下载信息(文件指针位置) Y,mH ]
private void read_nPos() sCb?TyN'n
{ "<O?KO3K
try{ ~[9 ]M)=O0
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); dy`~%lX?
int nCount = input.readInt(); 1xtbhk]D
nStartPos = new long[nCount]; gdC=SFb b
nEndPos = new long[nCount]; )QZ?Bf
for(int i=0;i<nStartPos.length;i++) 6ldDt?iSg
{ C1G Wi4)
nStartPos = input.readLong(); SwP h-6
nEndPos = input.readLong(); y6jTT%
} %n}]$
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input.close(); cRg$~rYd
} nj9hRiLn
catch(IOException e){e.printStackTrace ();} {{DW P-v4
catch(Exception e){e.printStackTrace ();} oW+R:2I~O
} FySK&
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private void processErrorCode(int nErrorCode) x@k9]6/zs
{ b`:Eo+p
System.err.println("Error Code : " + nErrorCode); L7xTAFe
} !E7/:t4
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//停止文件下载 g*]<]%Py"
public void siteStop() vRY4N{v(<
{ ,zw
bStop = true; 0^[$0]Mt[
for(int i=0;i<nStartPos.length;i++) fg1 zT~
fileSplitterFetch.splitterStop(); =q"3a9pb7
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} ss2:8up 99
} 6% ,Q
//负责部分文件的抓取 9SFiL#1
**FileSplitterFetch.java %Bo Jt-v
*/ ):[[Ch_
package NetFox; $Y4
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import java.io.*; l;;:3:
import java.net.*; W.CIyGK
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public class FileSplitterFetch extends Thread {
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String sURL; //File URL <=`@`rm{
long nStartPos; //File Snippet Start Position F%|(pHk
long nEndPos; //File Snippet End Position kR_[p._
int nThreadID; //Thread's ID C'$U1%:
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boolean bDownOver = false; //Downing is over CRf^6k_;(
boolean bStop = false; //Stop identical Cv=0&S.
FileAccessI fileAccessI = null; //File Access interface lubS{3<
7)]G"m{
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException GS^4tmc
{ RcE%?2lD
this.sURL = sURL; ]zm6;/S
this.nStartPos = nStart; ~>EVI=?
this.nEndPos = nEnd; >]`x~cE.5
nThreadID = id; C^~iz
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fileAccessI = new FileAccessI(sName,nStartPos);//定位 BxG;vS3>*e
} ](ninSX1w
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public void run() ?:2Xh/8-
{ cP
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while(nStartPos < nEndPos && !bStop) v;A
{ I[|I\tW
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try{ Tv KX8 m"
URL url = new URL(sURL); aG ,uF
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); - t+Mh.
httpConnection.setRequestProperty("User-Agent","NetFox"); 'F~u \m=E
String sProperty = "bytes="+nStartPos+"-"; g?`J ,*y
httpConnection.setRequestProperty("RANGE",sProperty); I
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Utility.log(sProperty); *Zvw&y*
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InputStream input = httpConnection.getInputStream(); I@B7uFj
//logResponseHead(httpConnection); bM'AD[
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byte[] b = new byte[1024]; nZ*P:K t:
int nRead; nGt8u4gcP
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) MoA{ /{
{ g,;MV7yE
nStartPos += fileAccessI.write(b,0,nRead); 7MfT~v
//if(nThreadID == 1) tX_eN
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); (!b:
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} c' 6H@m#=
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Utility.log("Thread " + nThreadID + " is over!"); s5pY)6)
bDownOver = true; TQou.'+v
//nPos = fileAccessI.write (b,0,nRead); xI@~I g
} d.Z]R&X08
catch(Exception e){e.printStackTrace ();} xv:?n^yt.[
} jBC9Vt;B
} A>?fbY2n
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//打印回应的头信息 g U?)
public void logResponseHead(HttpURLConnection con) x6t;=
{ |^F-.Z
for(int i=1;;i++) eZ!k'bS=
{ qkIU>b,B
String header=con.getHeaderFieldKey(i); $o/>wgQY-
if(header!=null) @2mP
//responseHeaders.put(header,httpConnection.getHeaderField(header)); 9ZBF1sMg
Utility.log(header+" : "+con.getHeaderField(header)); [a3
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else "jHN#}
break; CytpL`&^]
} pR"qPSv'
} "|.(yN
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public void splitterStop() - -G1H
{ k mjm6
bStop = true; B /W$RcV
} E(@;p%:
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} ~laZ(Bma);
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/* Pio^5jhB6
**FileAccess.java z+*Z<c5d
*//文件访问(定位,写) -?W@-*J
package NetFox; |6>_L6t
import java.io.*; 9zJ`;1
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public class FileAccessI implements Serializable{ qj&)w9RLJE
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 mV,R0olF
RandomAccessFile oSavedFile; ^aXBt
long nPos; ZhsZywM
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public FileAccessI() throws IOException U3}R^W~eb
{ _
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this("",0); ]D%k)<YK
} N-gRfra+8L
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public FileAccessI(String sName,long nPos) throws IOException blcKtrYg
{ vgj^ -
oSavedFile = new RandomAccessFile(sName,"rw"); O@iW?9C+
this.nPos = nPos; Gq*)]X{Ua
oSavedFile.seek(nPos); E0Q"qEvU
} R(sM(x5a`
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public synchronized int write(byte[] b,int nStart,int nLen) d 4]%Wdvf
{ BuTIJb+Q\
int n = -1; H|UL5<:]D
try{ %z~U@Mka
oSavedFile.write(b,nStart,nLen); ^d80\PXz
n = nLen; :eW~nI.Vc
} hli10p$
catch(IOException e) !dY:S';~
{ bZ.N7X PH
e.printStackTrace (); 6>:~?gs
} d|]O<]CG_
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return n; wkD:i 2E7
} (0W}e(D8
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} fm%RNAPvc
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/* `{F~'t['
**SiteInfoBean.java R*Z]
*/ |xZcT4
package NetFox; mE`qvavP|/
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public class SiteInfoBean { xn@0pL3B~
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private String sSiteURL; //Site's URL q9Sz7_K
private String sFilePath; //Saved File's Path -Zg @D(pF
private String sFileName; //Saved File's Name Reu{
private int nSplitter; //Count of Splited Downloading File *Ca)RgM
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public SiteInfoBean() UZP6x2:=
{//nSplitter的缺省值为5 _i[)$EgFm
//default value of nSplitter is 5 2BDan^:-Av
this("","","",5); Wi[m`#
} -I-Uh{)j
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) xs!g{~V{
{ 1Xr"h:U_X
sSiteURL= sURL; u\R`IZ&O
sFilePath = sPath; QZ3(u<f
sFileName = sName; HDVl5X`j'
this.nSplitter = nSpiltter; fu<2t$Cn>
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} u=;nU(]M '
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public String getSSiteURL() oD#>8Aw s
{ 7sc<dM
return sSiteURL; R
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} ncattp
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public void setSSiteURL(String value) RO{@RhnV
{ iv:/g|MBI&
sSiteURL = value; /J.\p/%\
} 6lmiMU&