/* $ReoIU^<
**SiteFileFetch.java LVt{`
*/ 3z5w}qN]M
package NetFox; M`{~AIqd(
import java.io.*; `IN/1=]5
import java.net.*; !}
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public class SiteFileFetch extends Thread { C
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SiteInfoBean siteInfoBean = null; //文件信息Bean BTi:Bcv k
long[] nStartPos; //开始位置 -SO`wL NV
long[] nEndPos; //结束位置 %VZQX_
FileSplitterFetch[] fileSplitterFetch; //子线程对象 uv>T8(w
long nFileLength; //文件长度 GO3F[l
boolean bFirst = true; //是否第一次取文件 Pi7IBz
boolean bStop = false; //停止标志 vuP.V#
File tmpFile; //文件下载的临时信息 >d1gVBhk
DataOutputStream output; //输出到文件的输出流 $d:>(_p=A
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 6<E4?<O%
public SiteFileFetch(SiteInfoBean bean) throws IOException CB&$tDi
{ @!;EW
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siteInfoBean = bean; e(t,~(
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ;}/@ar7s3
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); R>
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if(tmpFile.exists ()) &tKr
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{ @t W;(8-
bFirst = false; ~QVN^8WPg
read_nPos(); '8 O(J7J
} &2i3"9k
else iP nu *29
{ MJxTzQE
nStartPos = new long[bean.getNSplitter()]; l,(Mm,3
nEndPos = new long[bean.getNSplitter()]; {i}z|'!
} Ujw J}j
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} [5KzawV
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public void run() k{fTqKS%h
{ qT
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//获得文件长度 O^tH43C
//分割文件 "!\O N)l*
//实例FileSplitterFetch 86.LkwlqoH
//启动FileSplitterFetch线程 xUp[)B6?:
//等待子线程返回 D'dE!CAUs
try{ *TacVp
if(bFirst) N;)Y+amg^
{ mQVc ZV
nFileLength = getFileSize(); GQZLOjsop
if(nFileLength == -1) {|{}]B
{ v7;zce/~
System.err.println("File Length is not known!"); ,}9 G|$
} *)PCPYB^
else if(nFileLength == -2) (6Ssk4
{ *Ey5F/N}$H
System.err.println("File is not access!"); ,(%?j]_P2
} <4caG2~q
else m~upTQz
{ 8|\0\Wd;vu
for(int i=0;i<nStartPos.length;i++) m5m'ByX(*
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nStartPos = (long)(i*(nFileLength/nStartPos.length));
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} V !Cu%4
for(int i=0;i<nEndPos.length-1;i++) ;=&D_jGf]
{ dr25;L? B
nEndPos = nStartPos[i+1]; \t'v-x>2y5
} 3 #fOrNU2
nEndPos[nEndPos.length-1] = nFileLength; H|E{n/g
} t#kPEiD
} d+
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//启动子线程 t}Z*2=DO
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 2>Uy`B|f
for(int i=0;i<nStartPos.length;i++) W YHr'xJ
{ q\PHA
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), MhE'_sq
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 3YtFO;-
nStartPos,nEndPos,i); %?o@YwBo^E
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); cfb8kNn~+
fileSplitterFetch.start(); =1rq?M eX
} aJnZco6
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), (9;qV:0`
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); r_sZw@lqJ
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ?J;*
nEndPos = " + nFileLength); w(lxq:>"
// fileSplitterFetch[nPos.length-1].start(); /0w?"2-
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//等待子线程结束 wm3fd7T
//int count = 0; /eM_:H5
//是否结束while循环 \\j98(i
boolean breakWhile = false; M6ol/.G[
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while(!bStop) \O]1QM94Y
{ G4!$48
write_nPos(); =~Ac=j!q
Utility.sleep(500); $N7:;X"l
breakWhile = true; >E;&SX
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for(int i=0;i<nStartPos.length;i++) 0:W*_w0Ge
{ kNX(@f
if(!fileSplitterFetch.bDownOver) :#M(,S"Qq
{ G\ twx ;
breakWhile = false; %cM2;a=2
break; X@,xwsM%tb
} SE0"25\_G
} '/gw`MJ
if(breakWhile) #y~`nyg%|
break; jni }o m
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//count++; %4Nq T
//if(count>4) RvL-SI%E
// siteStop(); dAOmqu,6
} bSW!2#~
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System.err.println("文件下载结束!"); >x%Z^U
} 7)S;VG k
catch(Exception e){e.printStackTrace ();} U=<E,tM
} MC5M><5\
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//获得文件长度 Dk#$PjcRE
public long getFileSize() Jo1=C.V`Y
{ \ H#zRSbZ
int nFileLength = -1; }r&^*"
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try{ A9lnQCsJ
URL url = new URL(siteInfoBean.getSSiteURL()); Sd]` I)
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); xUYUOyV
httpConnection.setRequestProperty("User-Agent","NetFox"); 1>W|vOv"Z?
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int responseCode=httpConnection.getResponseCode(); CtbmX)vE
if(responseCode>=400) F+vgkqs@9
{ 5S'89 r3m
processErrorCode(responseCode); ~ifo7,
return -2; //-2 represent access is error ?i*kwEj=
} ~4th;#'
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String sHeader; E Kks8
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for(int i=1;;i++) A{Giz&p
{ tP2hU[7Z
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); #RoGyrLo
//Utility.log(in.readLine()); ~={8b
sHeader=httpConnection.getHeaderFieldKey(i); Oy$*ZG )
if(sHeader!=null) e:IUO1#
{ M{+Ie?ZI
if(sHeader.equals("Content-Length")) H kDT14 `&
{ #SQao;>
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); rmc0dm&l]
break; bH+p5Fd;
} nG&=$7x^
} RE`XyS0Q
else [QA@XBy6
break; #KZ6S9>@
} '7Dg+a^x7
} 7g3vh%G.
catch(IOException e){e.printStackTrace ();} I&|%Fn
catch(Exception e){e.printStackTrace ();} A?8f 6
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Utility.log(nFileLength); V%?oI]"
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return nFileLength; qsXK4`
} {ScilT
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//保存下载信息(文件指针位置) EY;C5P4
private void write_nPos() a6"Pe07t
{ |Vc8W0~0
try{ L%9DaK
output = new DataOutputStream(new FileOutputStream(tmpFile)); DLe?@R5
output.writeInt(nStartPos.length); jx a?
for(int i=0;i<nStartPos.length;i++) 'E+Ty(ED5
{ j?4k{?x
// output.writeLong(nPos); W!4(EdT*Cq
output.writeLong(fileSplitterFetch.nStartPos); ;
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output.writeLong(fileSplitterFetch.nEndPos); .r+ u pY
} !'(bwbd
output.close(); a5C% OI<
} J3cbDE%^m
catch(IOException e){e.printStackTrace ();} P4"_qxAW
catch(Exception e){e.printStackTrace ();} *[@lp7
} a+ZP]3@
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//读取保存的下载信息(文件指针位置) L=ZKY
private void read_nPos() ~{'.9
{ 4FEOV,n
try{ cf?*6q?n
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ;1^_.3
int nCount = input.readInt(); eZR{M\Q
nStartPos = new long[nCount]; w+gA3Dg
nEndPos = new long[nCount]; Y s[J xP
for(int i=0;i<nStartPos.length;i++) sG*1 ?
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nStartPos = input.readLong(); >t')ZSjRs
nEndPos = input.readLong(); :<f7;.
} #r M/
input.close(); hu.c&Q>
} p<
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catch(IOException e){e.printStackTrace ();} v??}d
catch(Exception e){e.printStackTrace ();} 7k}[x|u
} -S\74hA
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private void processErrorCode(int nErrorCode) 1a4
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{ 2[: *0 DV#
System.err.println("Error Code : " + nErrorCode); / 2>\Z (
} znv2:
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//停止文件下载 o,(MB[|hQ
public void siteStop() WgPpW!`
{ K4NB#
bStop = true; #FKo:id`K
for(int i=0;i<nStartPos.length;i++) o^%4w>|
fileSplitterFetch.splitterStop(); Q.Uyl:^PxU
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} i&\N_PUm[
} 5fuOl-M0W
//负责部分文件的抓取 DJP)V8]!B
**FileSplitterFetch.java ~.7r
*/ Y}%=:Yt
package NetFox; Q`}1 B
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import java.io.*; .w2X24Mmb
import java.net.*; _!6~o>
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public class FileSplitterFetch extends Thread { 4HEp}Y"}V
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String sURL; //File URL M0g!"0?
long nStartPos; //File Snippet Start Position ~E&drl\
long nEndPos; //File Snippet End Position Wo&10S w
int nThreadID; //Thread's ID f@&C
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boolean bDownOver = false; //Downing is over '^"6EF.R
boolean bStop = false; //Stop identical 3D70`u
FileAccessI fileAccessI = null; //File Access interface afOb-G$d=
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 1~NXCIdF
{ WzYy<
this.sURL = sURL; 1V(tt{
this.nStartPos = nStart; z 3)pvX5
this.nEndPos = nEnd; {FyGh
*/
nThreadID = id; :c%vl$
fileAccessI = new FileAccessI(sName,nStartPos);//定位 <Okk;rj2
} m@ b~
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public void run() Q| >
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{ c-8Pc]+g
while(nStartPos < nEndPos && !bStop) {<%zcNKl^L
{ ;B>2oq
#|`/K[.xd%
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try{ wQiRj.
URL url = new URL(sURL); "Wd?U[[
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); M?pu7wa
httpConnection.setRequestProperty("User-Agent","NetFox"); j&) "a,f
String sProperty = "bytes="+nStartPos+"-"; Un\h[m
httpConnection.setRequestProperty("RANGE",sProperty); 4h wUH
Utility.log(sProperty); vy\;#X!
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InputStream input = httpConnection.getInputStream(); u(V4KUk
//logResponseHead(httpConnection); is_`UDaB
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byte[] b = new byte[1024]; $$+6=r}
int nRead; ;,GE!9HW
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 3Tv;<hF
{ aV`4M VWOz
nStartPos += fileAccessI.write(b,0,nRead); A|p O
//if(nThreadID == 1) DP`$gd
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); X&EcQ
} KrN#>do&<
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Utility.log("Thread " + nThreadID + " is over!"); OpeK-K
bDownOver = true; _
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//nPos = fileAccessI.write (b,0,nRead); F aO=<jYi
} HVG9 C$
catch(Exception e){e.printStackTrace ();} 2@WF]*Z
} `h+ia/
} wlr/zquAE9
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//打印回应的头信息 BhC.#u/
public void logResponseHead(HttpURLConnection con) ++ !BSQ e
{ )HWf`;VQ
for(int i=1;;i++) @mM'V5_#
{ ek6PMZF:'
String header=con.getHeaderFieldKey(i); 8*yhx
if(header!=null) yZFm<_9>
//responseHeaders.put(header,httpConnection.getHeaderField(header)); [U[saR\
Utility.log(header+" : "+con.getHeaderField(header)); #xZ7%
else 'ms&ty*T
break; Dlhb'*@
} f%ude@E3
} 2VaQxctk
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public void splitterStop() o#Q0J17i?
{ >]uV
bStop = true; |~vo
} 1?s]nU
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} ;A)w:"m
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/* ?:F#WDD
**FileAccess.java Iqe=)
*//文件访问(定位,写) Q $Y ]KV
package NetFox; 9A0wiKp
import java.io.*; I_66q7U"0
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public class FileAccessI implements Serializable{ lJHV c"*/
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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 '?Fw]z1$
RandomAccessFile oSavedFile; K4938
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long nPos; -Bymt[
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public FileAccessI() throws IOException 2t'^
{ &wc%mQV
this("",0); 8z\v|-%Z
} \d~sU,L;]
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public FileAccessI(String sName,long nPos) throws IOException -7^?40A
{ KICy!
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oSavedFile = new RandomAccessFile(sName,"rw"); !.>TF+]
this.nPos = nPos; Q
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oSavedFile.seek(nPos); LPr34BK
} R$qp3I
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public synchronized int write(byte[] b,int nStart,int nLen) p^1s9CM%
{ (3kz(6S
int n = -1; 3(D!]ku~m
try{ KG:CVIW
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oSavedFile.write(b,nStart,nLen); ~"-+BG(5
n = nLen; >
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} os/_ObPiX
catch(IOException e) O3,IR1
{ :=
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e.printStackTrace (); &~`Ay4hq
} [|{2&830
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return n; n^Co
} uA#uq^3
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} CjW`cHd
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/* VKUoVOFvPR
**SiteInfoBean.java &3a1(>(7F
*/ ico%_fp
package NetFox; xb`,9.a7
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public class SiteInfoBean { 9C;Hm>WEpP
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private String sSiteURL; //Site's URL
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private String sFilePath; //Saved File's Path ,l}mCY
private String sFileName; //Saved File's Name !brXQj8D7
private int nSplitter; //Count of Splited Downloading File H(}Jt!/:
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public SiteInfoBean() $$my,:nH
{//nSplitter的缺省值为5 <_X`D4g]XO
//default value of nSplitter is 5 !V|%n(O"
this("","","",5); 5\hJ&
} JIeKp7;^
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) .9r+LA{
{ n/ ]<Bc?
sSiteURL= sURL; pv/LTv
sFilePath = sPath; @KtQ~D
sFileName = sName; #Av6BGM|,
this.nSplitter = nSpiltter; f+*wDH
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} a~#MMl
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public String getSSiteURL() Mlr]-Gu5Z
{ >cVEr+r9t
return sSiteURL; | g o jb
} g.3 .
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public void setSSiteURL(String value) ,:RHhg
{ oSGx7dj+
sSiteURL = value; cT8b$P5w
} R4xoc;b
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public String getSFilePath() ?|Q[QP
{ _oOEMQb
return sFilePath; 9wR-0E
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} vkFfHzR$
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public void setSFilePath(String value) v4X\LsOP
{ ZHA6BVVT
sFilePath = value; .QwwGm
} g~zz[F 8U
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public String getSFileName() Q@M>DA!d^V
{ N#C"@,}Y
return sFileName; eVRFb#EU0e
} -K+" :kiS
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public void setSFileName(String value) r3 OTU$t?
{ #X~{p4Lr
sFileName = value; Kk?]z7s-4
} l)JNNcej
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public int getNSplitter() ql
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{ '%JIc~LJ
return nSplitter; 8H0d4~Wg
} e|ChCvk
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public void setNSplitter(int nCount) *k&yD3br-V
{ {Q/XV=
nSplitter = nCount; H.sYy-_]F
} :o!bz>T
} ~
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/* j%|#8oV
**Utility.java A6?+$ Hr
*/ a}oFL%=?
package NetFox; /FzO9'kj
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public class Utility { _RzwE$+9
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public Utility() XYBvM]
{ jzRfD3_s
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