/* #sTEQjJ,J
**SiteFileFetch.java VIC0}LT0R
*/ Y4E/?37j
package NetFox; >@_im6
import java.io.*; +vW)vS[
import java.net.*; :w`3cwQ
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public class SiteFileFetch extends Thread { j~E",7Q'
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SiteInfoBean siteInfoBean = null; //文件信息Bean ~
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long[] nStartPos; //开始位置 RBwO+J53y
long[] nEndPos; //结束位置 LJFG0 W
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ST5V!jz
long nFileLength; //文件长度 -#In;~
boolean bFirst = true; //是否第一次取文件 'm3t|:nMU
boolean bStop = false; //停止标志 X
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File tmpFile; //文件下载的临时信息 .B72C[' c
DataOutputStream output; //输出到文件的输出流 R\mR $\cS
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) =PkO!Mm8
public SiteFileFetch(SiteInfoBean bean) throws IOException POAw M
{ H#i{?RM@l
siteInfoBean = bean; 2o3EHZ+]cm
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); )@gZ;`n
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 7j$Pt8$
if(tmpFile.exists ()) :O-iykXyI
{ iD`d99f8O
bFirst = false; {2&m`Dbm
read_nPos(); 2 PqS%`XiS
} T!RT<&
else 1PH:\0}
{ g7\,{Bw#E
nStartPos = new long[bean.getNSplitter()]; gU&%J4O
nEndPos = new long[bean.getNSplitter()]; 5%zXAQD=<
} r%@Lej5+
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} NGC,lv
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public void run() WWKvh
{ ,Lpixnm]
//获得文件长度 l<g5yYyf
//分割文件 0 B@n{PvR0
//实例FileSplitterFetch 80b;I|-T,
//启动FileSplitterFetch线程 \1"'E@+
//等待子线程返回 /E;y,o75
try{ ~y HU^5D
if(bFirst) DdQ;Q5|
{ ^y!;xc$(Qs
nFileLength = getFileSize(); (*p ,T
if(nFileLength == -1) +Hvc_Av''
{ 7 c|bc6?
System.err.println("File Length is not known!"); T9W`?A
} rxnFrx
else if(nFileLength == -2) fKH7xu!V4+
{ \Ig68dFf%
System.err.println("File is not access!"); #:jb*d?
} >Fio;cn?
else 54lu2gD'
{ XfPFo6
for(int i=0;i<nStartPos.length;i++) 7?j;7.i
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); N`@NiJ(O;
} :W#rhuzC
for(int i=0;i<nEndPos.length-1;i++) >F1kR\!
{ (jjTK'0[
nEndPos = nStartPos[i+1]; zGKyN@o
} j#r6b]k(Hv
nEndPos[nEndPos.length-1] = nFileLength; vo>d!rVCV
} `?T#Hl>j
} `Z:R Ce^
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//启动子线程 7SD Fz}
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; :y*NM,s
for(int i=0;i<nStartPos.length;i++) m>USD?i
{ >~%e$a7}+
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), +#U|skl
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), &Z(K6U#.
nStartPos,nEndPos,i); **9x?s
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); n0Y+b[+wj
fileSplitterFetch.start(); ^;!0j9"*:
} $mf
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// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ,.eWQK~
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); FZjHw_pP
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", lC:k7<0Ji
nEndPos = " + nFileLength); |4$M]M f0
// fileSplitterFetch[nPos.length-1].start(); ]Chj T}
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//等待子线程结束 +$4(zPs@
//int count = 0; L,y6^J!
//是否结束while循环 8n1'x;
boolean breakWhile = false; !cKz7?w
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while(!bStop) 7Q\|=$2
{ 4tL<q_
write_nPos(); X%yO5c\l2
Utility.sleep(500); 8.F~k~srA
breakWhile = true; COH<Tj
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for(int i=0;i<nStartPos.length;i++) UOQEk22
{ c/c$D;T
if(!fileSplitterFetch.bDownOver) }Zl&]e
{ 21k5I #U
breakWhile = false; r0p w_j
break; YK|bXSA[
} [MuEoWrq(}
} t78k4?
if(breakWhile) wFG3KzEq ~
break; 8XbA'% o
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//count++; z-M3
//if(count>4) 9x,RvWTb
// siteStop(); ]Q[p@gLd
} ss;R8:5
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System.err.println("文件下载结束!"); F~A 'X
} [O:
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catch(Exception e){e.printStackTrace ();} t_mIOm)S%
} y:v, j42%
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//获得文件长度 Mq';S^
public long getFileSize() cuOvN"nuNj
{ %Uz(Vd#K
int nFileLength = -1; =8U&[F
try{ Q:J^"
URL url = new URL(siteInfoBean.getSSiteURL()); >X*Mio8P#
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); sz9L8f2
httpConnection.setRequestProperty("User-Agent","NetFox"); CI3XzH\IX*
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int responseCode=httpConnection.getResponseCode(); re> rr4@
if(responseCode>=400) DTWD|M
{ _X@v/sAy
processErrorCode(responseCode); '\jd#Kn'h
return -2; //-2 represent access is error (b`]M`Fc
} % YOndIS:
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String sHeader; )7_"wD`
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for(int i=1;;i++) zt^48~ry
{ 2t $ j
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); @LJpdvb
//Utility.log(in.readLine()); Ivb4P`{
sHeader=httpConnection.getHeaderFieldKey(i); ,t1abp{A
if(sHeader!=null) #s!'+|2n
{ TX#m&vh
if(sHeader.equals("Content-Length")) P./VmY'
{ {3&|tk!*
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); QBR=0(giF
break; kI%%i>Y}
} \>Efd
} (Vo>e =q
else 7Pa@1']
break; jsNF#yE>
} Wh&8pH:
} "?| > btr
catch(IOException e){e.printStackTrace ();} o/ui)U_
catch(Exception e){e.printStackTrace ();} Y#g4$"G9
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Utility.log(nFileLength); '=l[;Q^Q
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return nFileLength; S4=R^];l
} Q,80 Hor#J
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//保存下载信息(文件指针位置) W\18{mbuy
private void write_nPos() 3"rzb]=R
{ 1h.)#g?{
try{ wY"Q o7
output = new DataOutputStream(new FileOutputStream(tmpFile)); 7.j[a*^
output.writeInt(nStartPos.length); .; )l
for(int i=0;i<nStartPos.length;i++) '?({;/L
{ %$TGzK 1
// output.writeLong(nPos); p019)X|vx
output.writeLong(fileSplitterFetch.nStartPos); 1Z,[|wJ
output.writeLong(fileSplitterFetch.nEndPos); ^Idle*+
} NH0qVQ@A
output.close(); , lJv
} c2K:FdB
catch(IOException e){e.printStackTrace ();} g(#f:"
catch(Exception e){e.printStackTrace ();} `SVmQSwO[
} `)QCn<
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//读取保存的下载信息(文件指针位置) ;U_QvN|
private void read_nPos() +S=Rn,
{ vVE7fq3
try{ UQ4% Xp
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); nJ"
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int nCount = input.readInt(); d[;.r
nStartPos = new long[nCount]; \w'*z&`W9
nEndPos = new long[nCount]; +kFxi2L6
for(int i=0;i<nStartPos.length;i++) ,6r{VLN
{ gkHNRAL
nStartPos = input.readLong(); cCR+D.F
nEndPos = input.readLong(); bBY^+c<
}
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input.close(); T,$WlK
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} kCXdGhb
catch(IOException e){e.printStackTrace ();} `l*;t`h
catch(Exception e){e.printStackTrace ();} I<A6Z&*un
} ?ByM[E$
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private void processErrorCode(int nErrorCode) 2./3 \n2
{ +Y+Y6Ac[}
System.err.println("Error Code : " + nErrorCode); r:]1O*
} @9&P~mo/
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//停止文件下载 \Vl`YYjZ
public void siteStop() Jnv@.
{ |c`w'W?C6
bStop = true; > ,DbNmi
for(int i=0;i<nStartPos.length;i++) ;.bm6(;
fileSplitterFetch.splitterStop(); WMj}kq)SY)
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} 7-BvFEM;
} RW P<B0)
//负责部分文件的抓取 4WB-Ec
**FileSplitterFetch.java AdWq Q
*/ b
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package NetFox; m:hY`[ f6
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import java.io.*; KOwOIDt
import java.net.*; yOvm`9
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public class FileSplitterFetch extends Thread { 0T>H)c6:\
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String sURL; //File URL %r+vSGt;5
long nStartPos; //File Snippet Start Position |$7vI&m
long nEndPos; //File Snippet End Position p7H3J?`w1+
int nThreadID; //Thread's ID 5cWw7V<m
boolean bDownOver = false; //Downing is over =v*.p=r
boolean bStop = false; //Stop identical PH{_,X
FileAccessI fileAccessI = null; //File Access interface rL5z]RY
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 6b!F 1
{ OnWx#84
this.sURL = sURL; w4LScvBg
this.nStartPos = nStart; 'L{8@gqi
this.nEndPos = nEnd; 5 Qoew9rA
nThreadID = id; !u]1dxa
fileAccessI = new FileAccessI(sName,nStartPos);//定位 NuU9~gSQ
} X(7qZ
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public void run() sFBneBub
{ 1[]&(Pa
while(nStartPos < nEndPos && !bStop) vp(;W,ba:|
{ #b7$TV
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try{ $TI5vhQ
URL url = new URL(sURL);
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); jg&E94}+
httpConnection.setRequestProperty("User-Agent","NetFox"); ;us%/kOR
String sProperty = "bytes="+nStartPos+"-"; ",)Qc!^P$
httpConnection.setRequestProperty("RANGE",sProperty); aTzjm`F0
Utility.log(sProperty); hkOsm6
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InputStream input = httpConnection.getInputStream(); 1bw{q.cmD
//logResponseHead(httpConnection); yAN=2fZm
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byte[] b = new byte[1024]; 2<hpK!R
int nRead; D/=5tOy
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) mR;qMX)0h
{ +x1eJug4
nStartPos += fileAccessI.write(b,0,nRead); Tz9`uW~Mf
//if(nThreadID == 1) \(">K
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); j:w{;(1=W
} >><.3
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Utility.log("Thread " + nThreadID + " is over!"); !d&C>7nb
bDownOver = true; .SWt3|Pi5
//nPos = fileAccessI.write (b,0,nRead); 2y%,p{="
} mYc.x
catch(Exception e){e.printStackTrace ();} #Oha(mRY
} zm,@]!wI
} 'Z`$n8
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//打印回应的头信息 (5Sivw*mP
public void logResponseHead(HttpURLConnection con) IG3,XW
{ $x6$*K(F
for(int i=1;;i++) %AN/>\#p
{ &P,^.'
String header=con.getHeaderFieldKey(i); ?X&6M;Zi
if(header!=null) W>b(Om_%
//responseHeaders.put(header,httpConnection.getHeaderField(header)); `HuCT6O
Utility.log(header+" : "+con.getHeaderField(header)); eyp,y2Tz
else *.&