/* J[I"/sdk-
**SiteFileFetch.java 3(oZZz
*/ V#n?&-{V
package NetFox; 8A`p
import java.io.*; okd
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import java.net.*; <P?3GT/
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public class SiteFileFetch extends Thread { S
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SiteInfoBean siteInfoBean = null; //文件信息Bean eH"qI2A
long[] nStartPos; //开始位置 JKEXYE
long[] nEndPos; //结束位置 ?yK%]1O
FileSplitterFetch[] fileSplitterFetch; //子线程对象 \@iOnRuHn9
long nFileLength; //文件长度 -f-O2G=
boolean bFirst = true; //是否第一次取文件 t-?KKU8
boolean bStop = false; //停止标志 uIVTs9\
File tmpFile; //文件下载的临时信息 8`R +y
DataOutputStream output; //输出到文件的输出流 D}k-2RM2k
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) r7]?g~zb
public SiteFileFetch(SiteInfoBean bean) throws IOException mjkw&2
{ 3Vb=6-|
siteInfoBean = bean; Mp DdJ,
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); < e7<t9
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); s$2l"|h>B
if(tmpFile.exists ()) LZZ:P
{ q9g[+*9]$
bFirst = false; V'f&JQA
read_nPos(); UIm[DYMS
} [~Z'xY
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else 5<:VJC<
{ YokZar2a0
nStartPos = new long[bean.getNSplitter()]; S4aHce5PXA
nEndPos = new long[bean.getNSplitter()]; ~|0F?~eR7
} B~'VDOG$Z
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} {YO%JTQ
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public void run() I!soV0VU]
{ >TY5ZRB
//获得文件长度 9 z8<[>
//分割文件 HqnKpZ
//实例FileSplitterFetch c|!A?>O? i
//启动FileSplitterFetch线程 q|]0on~]
//等待子线程返回 U_
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try{ skC|io-Zv
if(bFirst) f2w=ln
{ HHu7{,
nFileLength = getFileSize(); tci%=3,)
if(nFileLength == -1) @7[.>I(
{ 'Kso@St`o
System.err.println("File Length is not known!"); L@k;L
} rO?x/{;ai
else if(nFileLength == -2) :z0>H5
{ %Dr4~7=7a
System.err.println("File is not access!"); l
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} AZ9\>U@hD
else gt t$O
{ j~L1~@
for(int i=0;i<nStartPos.length;i++) N5 rG.6K
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); VgZaDd;
} Uh|__DUkh
for(int i=0;i<nEndPos.length-1;i++) )`+@j.75
{ )D@n?qbG
nEndPos = nStartPos[i+1]; ,<P[CUD&&
} *A1TDc$
nEndPos[nEndPos.length-1] = nFileLength; }jY[| >z
} cVHE}0Xd(
} R$;&O.
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//启动子线程 % 6hw
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ,8"[ /@
for(int i=0;i<nStartPos.length;i++) C}P
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{ ?'/5%f`
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), T;[c<gc/
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), , w'$T)
nStartPos,nEndPos,i); 97))'gC
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ?.Yw%{?TG
fileSplitterFetch.start(); ;`PkmAg
} PSQ:'
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), `)C`_g3Ew
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); CpqSn/
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", v yLAs;
nEndPos = " + nFileLength); v.2Vg
// fileSplitterFetch[nPos.length-1].start(); F/od,w9_
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//等待子线程结束 }B
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//int count = 0; Qhr]eu;z
//是否结束while循环 ?^$4)Y>Kf
boolean breakWhile = false; ^.1VhTB
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while(!bStop) c'#J{3d
{ 6[|<
write_nPos(); ,f0g|5yDf
Utility.sleep(500); AB&wn>q
breakWhile = true; ;{q) |GRF
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for(int i=0;i<nStartPos.length;i++) :0j`yo:w
{ //5_E7Ehu$
if(!fileSplitterFetch.bDownOver) w$;*~Qc
{ Ufe
breakWhile = false; :9
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break; +ZA\M:^b
} 6BN(^y#-X
} kbT-Oz 2
if(breakWhile) Cz);mOb%M%
break; 07"Oj9NlA
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//count++; $~@096`QL<
//if(count>4) Qp{-!*
// siteStop(); s&`XK$p
} r\ Yur
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System.err.println("文件下载结束!"); bl>b/u7/6
} |j}F$*SE[
catch(Exception e){e.printStackTrace ();} h5JwB<8
} 0\ w[_H
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//获得文件长度 "3 oU
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public long getFileSize() Ib8{+j
{ 3 DHA^9<q
int nFileLength = -1; `h3}"js
try{ "EhO )lR
URL url = new URL(siteInfoBean.getSSiteURL()); Jv.R?1;8i
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); .);:K
httpConnection.setRequestProperty("User-Agent","NetFox"); KL"L65g&
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int responseCode=httpConnection.getResponseCode(); Vot+gCZ
if(responseCode>=400) `80Hxp@
{ y+afUJT
processErrorCode(responseCode); "]V|bz o0a
return -2; //-2 represent access is error slfVQ809
} 7O^ S.(
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String sHeader; .LR>&N _U
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for(int i=1;;i++) %\&dFwb
{ S5a<L_
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); qDd/wR,44
//Utility.log(in.readLine()); #e>MNc
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sHeader=httpConnection.getHeaderFieldKey(i); dKpa5f7
if(sHeader!=null) P$Ru NF
{ a\_,_psK
if(sHeader.equals("Content-Length")) |raQ]b@t&
{ beZ| i 1:
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); n`Iy7X
break; >v,j;[(
} (r\h dLX
} T["(YFCByg
else 7!nAWlQ&-E
break; Hvo27THLo
} XO~^*[K
} ++"PPbOe&D
catch(IOException e){e.printStackTrace ();} H H3
catch(Exception e){e.printStackTrace ();} >{Z=cv/6o
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Utility.log(nFileLength); y<d#sv(s
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return nFileLength; P<x
} ~"Ki2'j)^]
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//保存下载信息(文件指针位置) uI&M|u:nT
private void write_nPos() rapca'
{ Uk\U*\.
try{ @{lnfOESl
output = new DataOutputStream(new FileOutputStream(tmpFile)); _/ZY&5N
output.writeInt(nStartPos.length); N&`ay{&`:
for(int i=0;i<nStartPos.length;i++) UOOme)\>
{ r^^C9"
// output.writeLong(nPos); 1Di&vpn0u
output.writeLong(fileSplitterFetch.nStartPos); uK5x[m
output.writeLong(fileSplitterFetch.nEndPos);
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} F|Q#KwN
output.close(); e|yuPd
} I0RWdOK8K
catch(IOException e){e.printStackTrace ();} [Cp{i<C
catch(Exception e){e.printStackTrace ();} y8z%s/gRh
} &[5az/Hj*
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//读取保存的下载信息(文件指针位置) +KNr1rG
private void read_nPos() c
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{
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try{ C ,hsr
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); vrbh+
int nCount = input.readInt(); ;D:T
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nStartPos = new long[nCount]; }*.*{I
nEndPos = new long[nCount]; 1PSb72h<
for(int i=0;i<nStartPos.length;i++) >.\E'e5^C
{ PM7/fv*,
nStartPos = input.readLong(); q|J]
nEndPos = input.readLong(); \/v$$1p2
} --kK<9J7
input.close(); sKO
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} )zo ;r!eP
catch(IOException e){e.printStackTrace ();} I#U44+c
catch(Exception e){e.printStackTrace ();} j83
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} Q>$L;1E*,
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private void processErrorCode(int nErrorCode) *cI Xae^Y7
{ ^dv>n]?
System.err.println("Error Code : " + nErrorCode); 7<D_ h/WV
} y{JkY\g
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//停止文件下载 ]U%Tm>s.
public void siteStop() G2D<LRWt4
{ $ cSZX#\
bStop = true; n4johV.#
for(int i=0;i<nStartPos.length;i++) ?f..N,s
fileSplitterFetch.splitterStop(); Kq$1lPI
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} J?'!8,RX
} X)m2{@v D
//负责部分文件的抓取 \ua.%|
**FileSplitterFetch.java g\'sGt3 O
*/ ny=iAZM>q
package NetFox; F1>,^qyG6
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import java.io.*; o@. !Z8
import java.net.*; s8Oz^5p(
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public class FileSplitterFetch extends Thread { ZV;yXLx|
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String sURL; //File URL Yo:&\a K[
long nStartPos; //File Snippet Start Position l<0V0R(
long nEndPos; //File Snippet End Position > R=YF*t
int nThreadID; //Thread's ID zdCt#=QV?R
boolean bDownOver = false; //Downing is over Za w+
boolean bStop = false; //Stop identical JK4 @
FileAccessI fileAccessI = null; //File Access interface CR<l"~X
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException >nX'RE|F
{ .+yJ'*i$d
this.sURL = sURL; <FEO6YP
this.nStartPos = nStart; bX,Z<BvbF
this.nEndPos = nEnd; EX_&wep@1
nThreadID = id; M3%<kk-_
fileAccessI = new FileAccessI(sName,nStartPos);//定位 'mF}+v^
} =#fqFL,
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public void run() JFfx9%Fq
{ R<-KXT9
while(nStartPos < nEndPos && !bStop) &3<]FK
{ +Q.[W`goV
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try{ sC>8[Jatd
URL url = new URL(sURL); i+}M#Y-O
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ("Zi,3"+
httpConnection.setRequestProperty("User-Agent","NetFox"); bGZy0.
String sProperty = "bytes="+nStartPos+"-"; L6T_&AiL$
httpConnection.setRequestProperty("RANGE",sProperty); aC*J=_9o#
Utility.log(sProperty);
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InputStream input = httpConnection.getInputStream(); TUG3#PSnm*
//logResponseHead(httpConnection); Mtu8zm
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byte[] b = new byte[1024]; 6o!"$IH4
int nRead; ^IpS 3y
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) Ne%X:h
{ WVZ\4y
nStartPos += fileAccessI.write(b,0,nRead); n):VuOjm
//if(nThreadID == 1) AOpfByw
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); fOfp.`n
} YpJzRm{Ra
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Utility.log("Thread " + nThreadID + " is over!"); Y3?kj@T`i
bDownOver = true; uJQeZEe
//nPos = fileAccessI.write (b,0,nRead); HO"(eDW6z
} >|<6s],v
catch(Exception e){e.printStackTrace ();} J{H475GqiT
} }U9e#>ex
} a`}-^;}SW
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//打印回应的头信息 pxgv(:Tw
public void logResponseHead(HttpURLConnection con) ;k>{I8L~
{ FXbNmBXF
for(int i=1;;i++) AWw:N6\
{
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String header=con.getHeaderFieldKey(i); ipsNiFv:
if(header!=null) /)~McP3
//responseHeaders.put(header,httpConnection.getHeaderField(header)); [X|P(&\hQd
Utility.log(header+" : "+con.getHeaderField(header)); OA+W$
else d/e9LK
break; 7{6wNc
} fy-(B;
} epQ7@9,Q
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public void splitterStop() h<?Vzl
{ kHJjdgV
bStop = true; GE>&fG
} uy$o%NL-7
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} fSj^/>
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/* B|!Re4`0
**FileAccess.java d6uL;eR
*//文件访问(定位,写) )pg?Z M9
package NetFox; lm$T`:c
import java.io.*; wDn5|F}i&
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public class FileAccessI implements Serializable{ x,n;GR
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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 wuPx6hCl
RandomAccessFile oSavedFile; &TKB8vx=#
long nPos; @hk~8y]rz
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public FileAccessI() throws IOException j &~OR6
{ (i {
this("",0); xR$xAcoSB
} 1Eh(U
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public FileAccessI(String sName,long nPos) throws IOException C/)Xd^#
{ 5K,Y6I&$SJ
oSavedFile = new RandomAccessFile(sName,"rw"); W}Z'zU?[
this.nPos = nPos; 0Nmd*r
oSavedFile.seek(nPos); K?) &8S
} @X|Cu bJ
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public synchronized int write(byte[] b,int nStart,int nLen) (R{WJjj
{ )nQ.6
int n = -1; cO'
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try{ fxjs"rD5
oSavedFile.write(b,nStart,nLen); }.x?$C+\"
n = nLen; a(F%M
} A%pcPzG;
catch(IOException e) {@k5e)
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{ K"eW.$
e.printStackTrace (); QD<f)JZK
} /mmCqP
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return n; '(;`t1V8k
} rlgp1>89
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} c{zQX0
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/* 4&}LYSZl
**SiteInfoBean.java 2}K7(y!?u
*/ 0X.pI1jCO
package NetFox; Yz4Q!tL
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public class SiteInfoBean { SZNM$X|T
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private String sSiteURL; //Site's URL :A>cf}
private String sFilePath; //Saved File's Path BZe x
private String sFileName; //Saved File's Name h49|x&03
private int nSplitter; //Count of Splited Downloading File 3 cu`U`
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public SiteInfoBean() J;HkR9<C
{//nSplitter的缺省值为5 eVS6#R]'m
//default value of nSplitter is 5 5?{a=r9
this("","","",5); 2/3,%5j_
} uL`;KD
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) xx_]e4
{
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sSiteURL= sURL; x[zt(kC0+
sFilePath = sPath; D:4Iex9$F"
sFileName = sName; (w}iEm\b
this.nSplitter = nSpiltter; h,"K+$
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} r>+\9q1
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public String getSSiteURL() VyK[*kyN
{ j#rjYiYKy
return sSiteURL; /I(IT=kp
} Y j;KKgk
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public void setSSiteURL(String value) OrNi<TY>
{ ~bC{R&p
sSiteURL = value; @m[q0G}
} kaqH.e(
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public String getSFilePath() yY+)IU.
{ |uf{:U)
return sFilePath; xM"k qRZ
} pUi|&F K">
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public void setSFilePath(String value) `f?v_Ui-$
{ 0]p!
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sFilePath = value; 46OYOa
} I?r7dQEm
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public String getSFileName() O/
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{ ^E{M[;sF3y
return sFileName; bk^W]<:z`
} LX;w~fRr.
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public void setSFileName(String value) ;;;aM:6\
{ >zx]%
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sFileName = value; <+o*"z\mI
} 1$mxMXNsJ
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public int getNSplitter() ;r'y/Y'?
{ E0?R,+>&4
return nSplitter; 6:_@ ;/03%
} IdTatE|^
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public void setNSplitter(int nCount) -hL 0}Wy$N
{ [&y