/* iHOvCrp+X
**SiteFileFetch.java ^#j{9FpPs
*/ Z@>WUw@F
package NetFox; +3;[1dpgf
import java.io.*; \o!B:Vb<
import java.net.*; cp 7;~i3
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public class SiteFileFetch extends Thread { E'_$?wWn5
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SiteInfoBean siteInfoBean = null; //文件信息Bean q}7(w$&
long[] nStartPos; //开始位置 fL R.2vJ
long[] nEndPos; //结束位置 U[l{cRT
FileSplitterFetch[] fileSplitterFetch; //子线程对象 cU=/X{&Om
long nFileLength; //文件长度 (@u"
boolean bFirst = true; //是否第一次取文件 v%2Jm!i+
boolean bStop = false; //停止标志 a`QKNrA2
File tmpFile; //文件下载的临时信息 m[*y9A1
DataOutputStream output; //输出到文件的输出流 UXV>#U?
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) /SYzo4(
public SiteFileFetch(SiteInfoBean bean) throws IOException WO6; K]
{ A&;Pt/#'
siteInfoBean = bean; ;!N_8{
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//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); RjQdlr6*
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); r)t-_p37
if(tmpFile.exists ()) Xc@%_6
{ N u9+b"Wr
bFirst = false; 7tz#R:
read_nPos(); N]@e7P'9F
} 'WQ<|(:{
else |-k~Fa
{ 5-X(K 'Q
nStartPos = new long[bean.getNSplitter()]; s av
nEndPos = new long[bean.getNSplitter()]; -qndBS
}
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public void run() f0lK,U@P
{ ns[Q %_
//获得文件长度 W_N!f=HW
//分割文件 k7Z1Y!n7
//实例FileSplitterFetch T$;N8x[
//启动FileSplitterFetch线程 Lv?e[GA
//等待子线程返回 ZYX(Cf
try{ *l4`2 eqZ
if(bFirst) Kf7v_T/
{ !;^TW$ G
nFileLength = getFileSize(); %]i("21
if(nFileLength == -1) UK xeN[fv
{ >T~duwS
System.err.println("File Length is not known!"); b:}+l;e52
} \a\ApD
else if(nFileLength == -2) c 7uryL
{ /_*L8b
System.err.println("File is not access!"); {]\!vG6
} .!hB tR
else K2R[u#Q
{ {n>W8sN<
for(int i=0;i<nStartPos.length;i++) pI|H9
{ #/Qe7:l
nStartPos = (long)(i*(nFileLength/nStartPos.length)); %@Ty,d:;=
} *b0f)y3RV
for(int i=0;i<nEndPos.length-1;i++) P*;zDQy
{ 0if~qGm=!
nEndPos = nStartPos[i+1]; PXYo@^ 3
} 9fL48f$
nEndPos[nEndPos.length-1] = nFileLength; w oS I
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} RI%ZT
} _mw(~r8R
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//启动子线程 \!4sd2Yi
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; PjkJsH
for(int i=0;i<nStartPos.length;i++) c}>p"
{ "Q ~-C|x
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), z2lEHa?w
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), #E(
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nStartPos,nEndPos,i); \WeGO.i-
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ?0VLx,kp
fileSplitterFetch.start();
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} ES#K'Lf
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), }TCOm_Y/qL
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); SrVJ Q~:>
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", `<L6Q2Y>j
nEndPos = " + nFileLength); {
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// fileSplitterFetch[nPos.length-1].start(); ~^Y(f'{
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//等待子线程结束 Rg6e7JVu
//int count = 0; 'nM)=
//是否结束while循环 ei8OLcw:x
boolean breakWhile = false; 85fBKpEe
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while(!bStop) kOGpe'bV
{ i+V4_`
write_nPos(); vO)nqtw
Utility.sleep(500); 2ajQ*aNq
breakWhile = true; Y`u.P(7#
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for(int i=0;i<nStartPos.length;i++)
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{ !.'@3-w]
if(!fileSplitterFetch.bDownOver) S/
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{ hD>O LoO
breakWhile = false; ~ 0x9`~
break; b:S#Sz$
} `~"l a>}
} &zF1&J58z
if(breakWhile) 7
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break; ~pqp`
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//count++; \DE`tkV8
//if(count>4) j_?U6$xi
// siteStop(); k.DDfuKN
} uSs~P%@6|
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System.err.println("文件下载结束!"); ^AUmIyf_
} }cll? 2
catch(Exception e){e.printStackTrace ();} PF1m :Iz`d
} zX!zG<<K
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//获得文件长度 P(W7,GD,k
public long getFileSize() /R< Q~G|\
{ xOjCF&W
int nFileLength = -1; =J,aB p
try{ cvbv\G'aT
URL url = new URL(siteInfoBean.getSSiteURL()); $b#"Rv
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); l|fOi A*K
httpConnection.setRequestProperty("User-Agent","NetFox"); /._wXH
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int responseCode=httpConnection.getResponseCode(); {O6f1LuH
if(responseCode>=400) ?<Dinq
{ Rp)82-
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processErrorCode(responseCode); L!-@dz
return -2; //-2 represent access is error 4b8!LzKS
} ,2)LH'Xx
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String sHeader; m?_S&/+*
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for(int i=1;;i++) aIk%$M at
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); n-dO |3,
//Utility.log(in.readLine()); //W<\
sHeader=httpConnection.getHeaderFieldKey(i); (i7]N[
if(sHeader!=null)
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{ #5T+P8
if(sHeader.equals("Content-Length")) L^VG?J
{ <!&&Qd-d6H
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); a Kb2:1EQ
break; A1p;Ye>o~
} P}H7WH
} NrTQ}_3)
else "7RQrz
break; VuFH
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} Fk>/
} K.] *:fd
catch(IOException e){e.printStackTrace ();} z@$7T:H>
catch(Exception e){e.printStackTrace ();} 7vV3"uns
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Utility.log(nFileLength); A%u-6"
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{
return nFileLength; 7,_N9Q]rB
} AMvM H
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//保存下载信息(文件指针位置) w/N.#s^
private void write_nPos() G;FY2;adK
{ q?&vV`PG5
try{ -.1x! ~.jX
output = new DataOutputStream(new FileOutputStream(tmpFile)); (eN\s98)/
output.writeInt(nStartPos.length); 0,nDyTS^
for(int i=0;i<nStartPos.length;i++) ]xA;*b;|h
{ 5>q|c`&}E
// output.writeLong(nPos); u%#bu^4"
output.writeLong(fileSplitterFetch.nStartPos); Z*nC
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output.writeLong(fileSplitterFetch.nEndPos); ;]MHU/
} $r9Sn
output.close(); H(!)]dO
} ,~gY'Ql
catch(IOException e){e.printStackTrace ();} o8RagSIo8
catch(Exception e){e.printStackTrace ();} '>Y"s|
} vj^vzFb K
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//读取保存的下载信息(文件指针位置) I1
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private void read_nPos() Q! ]
{ d> `9!)
try{ ?I`']|I
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); kh 17
int nCount = input.readInt(); ~DVAk|fc
nStartPos = new long[nCount]; g%#"
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nEndPos = new long[nCount]; >tqLwC."'
for(int i=0;i<nStartPos.length;i++) 2IqsBK`
{ w:Tz&$&Y$
nStartPos = input.readLong(); WtFv"$V
nEndPos = input.readLong(); $Dd IY}
}
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input.close(); W j/.rG&tE
} $k V^[
catch(IOException e){e.printStackTrace ();} }f<.07
catch(Exception e){e.printStackTrace ();} ykxjT@[
} ]0zXpMNI
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private void processErrorCode(int nErrorCode) ~9p*zC3M
{ 'AE)&56
System.err.println("Error Code : " + nErrorCode); %:N6#;l M
} vN-#Ej.
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//停止文件下载 I7nt<l!
public void siteStop() \D<rT)Tl
{ B[!wo
bStop = true; ATv.3cy
for(int i=0;i<nStartPos.length;i++) L=Fm:O'#2
fileSplitterFetch.splitterStop(); # h]m8
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} Z+=W gEu1
} jnYFA[Ab
//负责部分文件的抓取 ^vLHs=<
**FileSplitterFetch.java q[nX<tO
*/ ]ZelB,7q
package NetFox; _0 USe
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import java.io.*; !%_Z>a
import java.net.*; xXE/pIXw
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public class FileSplitterFetch extends Thread { &eG,CIT
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String sURL; //File URL 4T`u?T]
long nStartPos; //File Snippet Start Position d Ayof=
long nEndPos; //File Snippet End Position 3205gI,
int nThreadID; //Thread's ID \Q|1I
boolean bDownOver = false; //Downing is over G@oY2sM"
boolean bStop = false; //Stop identical 3aQWzEnh
FileAccessI fileAccessI = null; //File Access interface @>_`g=
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException j08}5Eo
{ G%
this.sURL = sURL; En&ESWN
this.nStartPos = nStart; =LL5E}xP
this.nEndPos = nEnd; &7!&]kA+
nThreadID = id; # nwEF QA
fileAccessI = new FileAccessI(sName,nStartPos);//定位 G,e>dp_cPu
} lplEQ]J|
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public void run() .dt7b4.kd
{ 7JD
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while(nStartPos < nEndPos && !bStop) [nJ),9$z_
{ z/)HJo2#
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try{ YQvN;W
URL url = new URL(sURL); $*V:;-H
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); <->Nex
httpConnection.setRequestProperty("User-Agent","NetFox"); ~&4Hc%*IB
String sProperty = "bytes="+nStartPos+"-"; bX:Y5o49
httpConnection.setRequestProperty("RANGE",sProperty); lOt3^`
Utility.log(sProperty); r9sW:cM:e
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InputStream input = httpConnection.getInputStream(); 1hw1AJ}(F
//logResponseHead(httpConnection); F=U3o=-:
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