/* a=n*}.
**SiteFileFetch.java XFJGL!wWm[
*/ SB"Uu2)wZ
package NetFox; Zi'}qs$v
import java.io.*; LbCcOkL/@@
import java.net.*; aX
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public class SiteFileFetch extends Thread { Msj(>U&}+
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SiteInfoBean siteInfoBean = null; //文件信息Bean =^a Ngq
long[] nStartPos; //开始位置 >Pa&f20Hp
long[] nEndPos; //结束位置 IZ?+c@t
FileSplitterFetch[] fileSplitterFetch; //子线程对象 j{ QzD^t
long nFileLength; //文件长度 CshYUr -
boolean bFirst = true; //是否第一次取文件 [_kis
boolean bStop = false; //停止标志 WBc ,/lgZ
File tmpFile; //文件下载的临时信息 ux>wa+XFa
DataOutputStream output; //输出到文件的输出流 cV8Bl="gqe
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) p1}umDb%
public SiteFileFetch(SiteInfoBean bean) throws IOException rjk{9u1a"
{ u*n%cXY;J/
siteInfoBean = bean; JK.<(=y\
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); #R^^XG`1
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); GnT Cq_\
if(tmpFile.exists ()) Owd{;
{ _#;UXAi
bFirst = false; M/<>'%sj
read_nPos(); Zw@=WW[Q`p
} 4v[Zhf4JM
else z[vHMJ
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{ +"P!es\q
nStartPos = new long[bean.getNSplitter()]; dV/ ^@[
nEndPos = new long[bean.getNSplitter()]; C[X2]zr
} M%{,?a0V
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} zDK"Y{
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public void run() opaRk.p
{ QYB66g:
//获得文件长度 T~D2rt\
//分割文件 UO~Xzx!e
//实例FileSplitterFetch /9QC$Z):<
//启动FileSplitterFetch线程 /&>vhpZ}
//等待子线程返回 ,M?K3lG\g[
try{ *OM+d$l!
if(bFirst) G!<-9HA5
{ Sm5T/&z
nFileLength = getFileSize(); %p; 'l
if(nFileLength == -1) `J
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{ "A9qC*6[
System.err.println("File Length is not known!"); Pl/}`H:R&
} sa?Ul)L2
else if(nFileLength == -2) >U7{EfUJdx
{ 2=]Xe#5J=
System.err.println("File is not access!"); Ea<kc[Q
} q$iGeE#
else tDWoQ&z2t_
{ xq@_'
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for(int i=0;i<nStartPos.length;i++) tX.fbL@T
{ ]@P!Q&V #
nStartPos = (long)(i*(nFileLength/nStartPos.length)); l$:?82{
} qmy3pnL
for(int i=0;i<nEndPos.length-1;i++) 4Pv Pp{Y
{
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nEndPos = nStartPos[i+1]; bnzIDsw!Q
} E7`Q=4@e
nEndPos[nEndPos.length-1] = nFileLength; goje4;
} gt \O
} !+o`,K TYp
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//启动子线程 hVGK%HCz&
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; @9AK!I8f
for(int i=0;i<nStartPos.length;i++) Ljs4^vy<J
{ v!WkPvU
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), _C4N6YdU
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), |!6<L_31%
nStartPos,nEndPos,i); ZNUSHxA
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Fi8#r)G.
fileSplitterFetch.start(); T*1 `MIkv
} (dnaT-M3
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 7*>(C*q=
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ;!:@3c
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", q]\GBRp
nEndPos = " + nFileLength); x%J.$o[<_
// fileSplitterFetch[nPos.length-1].start(); [}Z!hq
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bNh~=[E
//等待子线程结束 hi0-Sw
//int count = 0; ~{00moN"m
//是否结束while循环 d`sIgll&n
boolean breakWhile = false; kE[Hq-J=N
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while(!bStop) aB ^`3J
{ Aa!#=V1d
write_nPos(); .T*89cEu
Utility.sleep(500); <(tnClAn
breakWhile = true; @g%^H)T
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for(int i=0;i<nStartPos.length;i++) @3_."-d
{ #-7m@EU;O
if(!fileSplitterFetch.bDownOver) 9Ac4'L
{ pT<}n 9yB5
breakWhile = false; ,7os3~Mk9
break; '<% ;Nv
} 7cly{U"
} <BhNmEo)2
if(breakWhile) E2yL9]K2
break; SEsLJ?Dv0
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//count++; C25 2E
//if(count>4) Ct0YwIR*
// siteStop(); cB|Rj}40v
} :WAFBK/x
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} .'\IR
System.err.println("文件下载结束!"); ?/FCq6o
} .Uh|V-
catch(Exception e){e.printStackTrace ();} /r Z`e'}
} Z{rD4S@^
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//获得文件长度 CINC1Ll_24
public long getFileSize() y4`uU1=
{ )~ =g}&
int nFileLength = -1; u>h|A(<
try{ 7f#r&~=
URL url = new URL(siteInfoBean.getSSiteURL()); GcCMCR3
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Wv-nRDNG
httpConnection.setRequestProperty("User-Agent","NetFox"); #*x8)6Ct
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int responseCode=httpConnection.getResponseCode(); Q4QF_um
if(responseCode>=400) YLFM3IaP
{ FiW>kTM8
processErrorCode(responseCode); ))eQZ3ap9
return -2; //-2 represent access is error P"ATqQG%D
} l_0/g^(
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String sHeader; Fv2U@n6'v
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for(int i=1;;i++) :Mzkm^7B
{ LL7un_EC
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); *;X,yEK[
//Utility.log(in.readLine()); 8|H^u6+yz
sHeader=httpConnection.getHeaderFieldKey(i); XpoEZ|0
if(sHeader!=null) ;.#l[
{ X@up=%(
if(sHeader.equals("Content-Length"))
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{ .|x"'3#
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); xe9V'wICp(
break; x'hUw*
} PBY^m+
} Yb=Z`)
else Lzy Ix!S
break; r E<Ou"
} Ub| -Q
} >gGdzL
catch(IOException e){e.printStackTrace ();} L6IF0`M<,I
catch(Exception e){e.printStackTrace ();} T<S_C$O
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Utility.log(nFileLength); O\ph!?L
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return nFileLength; VKb'!Ystl
} 8V(-S,
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//保存下载信息(文件指针位置) $ITh)#Nj
private void write_nPos() yjB.-o('
{ DqbU$jt`
try{ +y\mlfJ.-b
output = new DataOutputStream(new FileOutputStream(tmpFile)); !K5D:x
output.writeInt(nStartPos.length); i\94e{uty[
for(int i=0;i<nStartPos.length;i++) &I=F4 z
{ mCQn '{)
// output.writeLong(nPos); <[w>Mbqj_
output.writeLong(fileSplitterFetch.nStartPos); n1
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output.writeLong(fileSplitterFetch.nEndPos); 9&7$oI$!J
} hB 36o9|9
output.close(); J sc`^a%`'
} -]e@FNL
catch(IOException e){e.printStackTrace ();} '>0rp\jC
catch(Exception e){e.printStackTrace ();} >+E
} c</u]TD
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//读取保存的下载信息(文件指针位置) O0cKmh6=
private void read_nPos() {c\KiWN
{ 6}S1um4 F
try{ o u*`~K|R
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); jg+q{ ^
int nCount = input.readInt(); 0
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nStartPos = new long[nCount]; cBz_L"5vr[
nEndPos = new long[nCount]; @A;Ouu(
for(int i=0;i<nStartPos.length;i++) Bgy?k K2[
{ t,>j{SK ~
nStartPos = input.readLong(); 'awZ-$#
nEndPos = input.readLong(); .GH#`j
} R<FW?z*
input.close(); +Oa+G.;)o4
} NP< {WL#
catch(IOException e){e.printStackTrace ();} l7M![Ur
catch(Exception e){e.printStackTrace ();}
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} QH.zsqf(
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private void processErrorCode(int nErrorCode) ZXL
{ pR*)\@ma
System.err.println("Error Code : " + nErrorCode); Tyk\l>S
} ]<B@g($
* M,'F^E2
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//停止文件下载 e~iPN.'1
public void siteStop() #V:28[
{ QXg9ah~
bStop = true; s!Y`1h{
for(int i=0;i<nStartPos.length;i++) )/_T`cN
fileSplitterFetch.splitterStop(); XEvDtDR
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} :L'U>)k
} Y,;$RV@g
//负责部分文件的抓取 q]r?s%x
**FileSplitterFetch.java byB
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*/ ZuIw4u(9
package NetFox; R;2q=%
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import java.io.*; z=/xv},
import java.net.*; Z;4pI@u
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public class FileSplitterFetch extends Thread { A(dWAe,
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String sURL; //File URL
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long nStartPos; //File Snippet Start Position E`aAPk_y
long nEndPos; //File Snippet End Position e"]*^Q
int nThreadID; //Thread's ID Fo86WP}
boolean bDownOver = false; //Downing is over nL]-]n;
boolean bStop = false; //Stop identical <~}#Q,9
FileAccessI fileAccessI = null; //File Access interface 2^.qKY@g@
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{ :m%n-
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException e6JT|>9A7
{ rs?"pGz;
this.sURL = sURL; @M!WosRk
this.nStartPos = nStart; IS9}@5`'
this.nEndPos = nEnd; +o7Np|Ou
nThreadID = id; d5z?QI
fileAccessI = new FileAccessI(sName,nStartPos);//定位 X'W8 mqk
} eO?.8OM-a
= ^OXP+o
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public void run() f#3U,n8:
{ _xVtB1@kLM
while(nStartPos < nEndPos && !bStop) AO"pm
{ 43p0k&;-7
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try{ Ous_269cM
URL url = new URL(sURL); UNB'Xjp}@
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); !0+!%Nr>J
httpConnection.setRequestProperty("User-Agent","NetFox"); {vL4:K
String sProperty = "bytes="+nStartPos+"-"; Ka$YKY,
httpConnection.setRequestProperty("RANGE",sProperty); sMhUVc4
Utility.log(sProperty); b9(_bsc
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InputStream input = httpConnection.getInputStream(); q\f Z Q
//logResponseHead(httpConnection); 0s#`H
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byte[] b = new byte[1024]; @! gJOy
int nRead; >,V~-Tp
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) K4V\Jj1l
{ | ]DJz
nStartPos += fileAccessI.write(b,0,nRead); ^3B&E^R
//if(nThreadID == 1) <,S5(pZ
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ~VqDh*0
} wx,yx3c (
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Utility.log("Thread " + nThreadID + " is over!"); #ARQB2V
bDownOver = true; |*w}bT(PfR
//nPos = fileAccessI.write (b,0,nRead); j~ )GZV
} uR:@7n
catch(Exception e){e.printStackTrace ();} @},25"x)
} p[zKc2 TPk
} vA r
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//打印回应的头信息 !Xzne_V<
public void logResponseHead(HttpURLConnection con) JQtBt2
{ tf5h/:
for(int i=1;;i++) {M.OOEcIp
{ #J,?oe=<4
String header=con.getHeaderFieldKey(i); N5SePA\ ,?
if(header!=null) *C*'J7
//responseHeaders.put(header,httpConnection.getHeaderField(header)); yX'f"*
Utility.log(header+" : "+con.getHeaderField(header)); uV@#;c4
else Rz Os,
break; S-$N! G~!
} L/U^1=Wi*O
} \:To>A32
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public void splitterStop() 2;z~xR
{ E W{vF|
bStop = true; :=iP_*#
} nSM8o<)H
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} xxsax/h
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/* srh>"
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**FileAccess.java 9uNkd2#
*//文件访问(定位,写) z;dFS
package NetFox; 3Dd"qON!
import java.io.*; ZJ$nHS?ra
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public class FileAccessI implements Serializable{ ?51Y&gOEZ
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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 "zn<\z$l
RandomAccessFile oSavedFile; * 7<{Xbsj^
long nPos; 0I`)<o-
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public FileAccessI() throws IOException /*zngp@
{ v*.[O/,EBR
this("",0); JjXuy7XQ
} cL]vJ`?Ih
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public FileAccessI(String sName,long nPos) throws IOException a+U^mPe
{ *CIR$sS
oSavedFile = new RandomAccessFile(sName,"rw"); V+A9.KoI
this.nPos = nPos; G<2OL#Y-
oSavedFile.seek(nPos); S[2uez`
} ?>p(*
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public synchronized int write(byte[] b,int nStart,int nLen) pn:) Rq0
{ X{ZcJ8K
int n = -1; Z8 X=Md8=
try{ ;V=Y#|o
oSavedFile.write(b,nStart,nLen); eWgqds
n = nLen; >o]!-46
} R 2{ kS
catch(IOException e) = 02$Dwr
{ B=>VP-:
e.printStackTrace (); O3YD
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} VP7g::Ab
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+ Z7 L&BI
return n; ,[}
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} R;G"LT
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} _uYidtxo=
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/* 4
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**SiteInfoBean.java hLv~N}
*/ SH009@l_8
package NetFox; F&Bh\C)]
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public class SiteInfoBean { QGR}`n2D
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private String sSiteURL; //Site's URL \W,,@-
private String sFilePath; //Saved File's Path bPlqS+ai_
private String sFileName; //Saved File's Name !nBE[&
private int nSplitter; //Count of Splited Downloading File i-<1M|f
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public SiteInfoBean() pZ@)9c
{//nSplitter的缺省值为5 |g$n-t
//default value of nSplitter is 5 yDE0qUO
this("","","",5); >-%}'iz+
} @L 9C_a
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) <-]qU}-
{ JNJ96wnX1
sSiteURL= sURL; N<$dbqoT|
sFilePath = sPath; V,*<E &+
sFileName = sName; RZ6[+Ygn
this.nSplitter = nSpiltter; A"V($:>U
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} c SV`?[a
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public String getSSiteURL() e#5LBSP
{ 'o!{YLJ fM
return sSiteURL; _x2i=SFo*$
} Mur)'
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public void setSSiteURL(String value) ^%qe&Pe2
{ :pp@x*uNP
sSiteURL = value; ~\{a<-R
} ki8;:m4
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public String getSFilePath() ]RvFn~E!s
{ x(tf0[g
return sFilePath; Hdn%r<+c
} ev{;}2~V
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public void setSFilePath(String value) j6JK4{
{ .:b&$~<
sFilePath = value; Fhk 8
} >iKbn
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public String getSFileName() , S
}
{ 1^HmM"DD
return sFileName; !bq3c(d
} 7~ I*u6zY
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public void setSFileName(String value) 0p31C7!
{ e!B>M{
sFileName = value; ^E#i5d+'N
} .XVW2ISv
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)&") J}@
public int getNSplitter() -Gyj]v5y`c
{ Cd7imj
return nSplitter; YjR`}rdwo
} {tDH !sX
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public void setNSplitter(int nCount) c{,VU.5/
{ %FhUjHm
nSplitter = nCount; nn?h;KzB
} y!kU0
} %`# HGji)
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/* b)(rlX
**Utility.java d$gT,+|vu
*/ $SbgdbX
package NetFox; nkxv,_)ZT
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public class Utility { |nMg.t`8
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public Utility() 0|=,!sY
{
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} IyPk3N
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//线程睡眠 itn<