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**SiteFileFetch.java .DR<Te
*/ (
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package NetFox; ~ !
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import java.io.*; "
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import java.net.*; qg!|l7e
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public class SiteFileFetch extends Thread { R_68-WO
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SiteInfoBean siteInfoBean = null; //文件信息Bean MHai%E
long[] nStartPos; //开始位置 n\5RAIg
long[] nEndPos; //结束位置 x2z;6)
FileSplitterFetch[] fileSplitterFetch; //子线程对象 W$rH"_@m
long nFileLength; //文件长度 < hO
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boolean bFirst = true; //是否第一次取文件 T/xp?Vq6/
boolean bStop = false; //停止标志 K]|> Et`
File tmpFile; //文件下载的临时信息 O.Iu6D
DataOutputStream output; //输出到文件的输出流 :GW&O /Yo
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) %1O[i4s:-
public SiteFileFetch(SiteInfoBean bean) throws IOException H5]^
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{ 2eC(Ijq[a
siteInfoBean = bean; !V\Q<So<
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); T
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tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); t{FlB!jv
if(tmpFile.exists ()) ;._7jFj.
{ 8&~~j7p,
bFirst = false; k^%B5
read_nPos(); )m{Ye0!RD
} AUNQA
else $m+sNEAa
{ UIAj]
nStartPos = new long[bean.getNSplitter()]; x-<)\L&
nEndPos = new long[bean.getNSplitter()]; gV`=jAE_
} [],1lRYI9_
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public void run() Nl9I*x^e
{ 7&"n`@(.!
//获得文件长度 }X_;X_\3;'
//分割文件 T4 N~(Fi)
//实例FileSplitterFetch R8UYP=Kp
//启动FileSplitterFetch线程 mp?78_I)
//等待子线程返回 3=$q
try{ >sjhA|gXk
if(bFirst) hL;8pE8
{ !F4@KAv
nFileLength = getFileSize(); 6"t;gSt4
if(nFileLength == -1) L%$|^T=%
{ E+ tB&
System.err.println("File Length is not known!"); N,
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} D?,#aB"
else if(nFileLength == -2) M$d%p6Cv
{ G4;3cT3'
System.err.println("File is not access!"); aKlUX
} ;?~$h-9)
else 1q3(
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{ R:AA,^Z
for(int i=0;i<nStartPos.length;i++) 1>Dl\czn
{ 5"]~oPK
nStartPos = (long)(i*(nFileLength/nStartPos.length)); P"?FnTbv[
} 7Wa?$6d
for(int i=0;i<nEndPos.length-1;i++) [NIlbjYH
{ ELjK0pE}-
nEndPos = nStartPos[i+1]; #D9e$E(J^
} 2gjGeM
nEndPos[nEndPos.length-1] = nFileLength; zrv#Xa!O\
} ^6P3%
} 6ubL1K
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//启动子线程 >'5_Y]h4m|
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; |*X*n*oI
for(int i=0;i<nStartPos.length;i++) K+)%KP
{ zYv#:>C8
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), |Uk"
{
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), q;D+ai
nStartPos,nEndPos,i); F@!Td(r2
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); qG/fE'(j&
fileSplitterFetch.start(); pdb1GDl0q
} w pt='(
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), %?hsoj&k
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); m8JR@!t7
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Ty@=yA17
nEndPos = " + nFileLength); gx:;&4AD
// fileSplitterFetch[nPos.length-1].start(); ).HDru-2
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//等待子线程结束 5P hX"7
//int count = 0; <U9/InN0[
//是否结束while循环 EQIo5
boolean breakWhile = false; {"H2 :-t<
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while(!bStop) Ei3zBS?J)
{ ia{c
write_nPos(); NLe}Jqp
Utility.sleep(500); %=<IGce
breakWhile = true; (9mM kU=
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for(int i=0;i<nStartPos.length;i++) '[(nmx'yVJ
{ Gy Qm/I
if(!fileSplitterFetch.bDownOver) +wk`;0s A
{ N_Af3R1_
breakWhile = false; ^, i>'T
break; F'?I-jtI
} ;C/bJEgdd
} +~U=C9[gj
if(breakWhile) uH^PQ
break; Hv<'dt$|
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//count++; s&{Qdf
//if(count>4) Lj%{y.Rj
// siteStop(); q 'a
} 5NXt$k5
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System.err.println("文件下载结束!"); 0ZPV'`KGp
} 9kY[j2,+
catch(Exception e){e.printStackTrace ();} 8g7,2f/ }
} kK~IwA
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//获得文件长度 ?68uS;
public long getFileSize() :Ze+%d=
{ :y,v&Kk#T
int nFileLength = -1; 8Chu"PM%-J
try{ Ei@M$Fd
URL url = new URL(siteInfoBean.getSSiteURL()); I5);jgb
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); m>e3vu
httpConnection.setRequestProperty("User-Agent","NetFox"); dYojm1MQ
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int responseCode=httpConnection.getResponseCode(); rp:wQH7
if(responseCode>=400) <B&R6<]T
{ k6?cP0I)5
processErrorCode(responseCode); VzRx%j/i
return -2; //-2 represent access is error j%*7feSNC
} 7/X"z=Q^|
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String sHeader; 6j8<Q 2
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for(int i=1;;i++) 9-bG<`v\E
{ H.O(*Q=
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); [H"#7t.V-~
//Utility.log(in.readLine()); )Z@-DA*Q-
sHeader=httpConnection.getHeaderFieldKey(i); g"!\\:M
if(sHeader!=null) -lRhz!E]
{ [~k]{[NJ
if(sHeader.equals("Content-Length")) (%Oe_*e}Y
{ ^2M!*p&h
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ~j @UlP
break; <-jGqUN_I
} fjDpwb:x)
} /k"hH\Pp
else 8!h'j
break; ._p""'Sa
} \w)?SVp
} 76#.F
catch(IOException e){e.printStackTrace ();} *"G 8
catch(Exception e){e.printStackTrace ();} N^elVu4 K
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Utility.log(nFileLength); ^ZQCIS-R
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return nFileLength; eZO9GMO
} s5Fr)q// !
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//保存下载信息(文件指针位置) VVrwOoCN
private void write_nPos() n'64;J5
{ Q59/ex
try{ Bx X$5u
output = new DataOutputStream(new FileOutputStream(tmpFile)); hZNEv|
output.writeInt(nStartPos.length); Plz-7fy33
for(int i=0;i<nStartPos.length;i++) qCJ=Z
{ ~Y/z=^
// output.writeLong(nPos); o G_~3Kt
output.writeLong(fileSplitterFetch.nStartPos); ~B@}R
output.writeLong(fileSplitterFetch.nEndPos); cq^sq1A:
} wt7.oKbW
output.close(); Xn7[n
} 12r` )
catch(IOException e){e.printStackTrace ();} 4NVgOr:
catch(Exception e){e.printStackTrace ();} &?$\Y,{
} Cals?u#U=
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//读取保存的下载信息(文件指针位置) 2uo8j F.h
private void read_nPos() f
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{ ~{
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try{ [w%#<5h
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); W:ixzpQ
int nCount = input.readInt(); pa]
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nStartPos = new long[nCount]; -v*x V;[
nEndPos = new long[nCount]; \FI^Vk
for(int i=0;i<nStartPos.length;i++) ^~I @
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{ X"J%R/f
nStartPos = input.readLong(); iE{Oit^aG
nEndPos = input.readLong(); `03<0L
} +IsWI;lp
input.close(); >1XL;)IL>
} d x359
catch(IOException e){e.printStackTrace ();} x9*ys;~w
catch(Exception e){e.printStackTrace ();} Rc7.M"wzjX
} mahi7eU
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private void processErrorCode(int nErrorCode) T^.{9F]*S
{ $wXih#7
System.err.println("Error Code : " + nErrorCode); fle0c^ =
} \2eFpy(
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//停止文件下载 j];1"50?
public void siteStop() n^Au*'
{ 7dhn'TW
bStop = true; k <}I<Or
for(int i=0;i<nStartPos.length;i++) `]yKM0 Z
fileSplitterFetch.splitterStop(); qi[(*bFK7
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} s#Q_Gu
} LsotgQ8
//负责部分文件的抓取 >\-3P$
**FileSplitterFetch.java bG1 ofsU
*/ 3&'R1~Vh
package NetFox; Cs;<'[_?YO
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import java.io.*; AuM:2N2
import java.net.*; L(Rorf~V
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public class FileSplitterFetch extends Thread { 1(F'~i|5
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String sURL; //File URL [b pwg&Oo
long nStartPos; //File Snippet Start Position pgfu+K7?w
long nEndPos; //File Snippet End Position {G]`1Q1DR
int nThreadID; //Thread's ID &*c'uNw
boolean bDownOver = false; //Downing is over Bzm.X=U:
boolean bStop = false; //Stop identical 8I {56$
FileAccessI fileAccessI = null; //File Access interface H!^C 2
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 4}PeP^pj
{ K+t];(
this.sURL = sURL; 0wYiu
this.nStartPos = nStart; n%8#?GC`
this.nEndPos = nEnd; V'$oTZ`
nThreadID = id; m4\g o
fileAccessI = new FileAccessI(sName,nStartPos);//定位 oYGUjI
} )da:&F -
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public void run() Fj48quW1\P
{ FRD<0o /`
while(nStartPos < nEndPos && !bStop) fzOMX
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{ *@=fq|6l 2
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