/* G{s
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**SiteFileFetch.java 0bIhP,4&
*/ i;<H^\%
package NetFox; Ut"F b
import java.io.*; :jWQev"/
import java.net.*; 6$+F5T
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public class SiteFileFetch extends Thread { 5
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SiteInfoBean siteInfoBean = null; //文件信息Bean SR'u*u!
long[] nStartPos; //开始位置 Y&b JKX
long[] nEndPos; //结束位置 >x1?t
FileSplitterFetch[] fileSplitterFetch; //子线程对象 {Ve_u
long nFileLength; //文件长度 H|!|fo-Tx
boolean bFirst = true; //是否第一次取文件 f,Dj@?3+
boolean bStop = false; //停止标志 z!\)sL/"
File tmpFile; //文件下载的临时信息 &q[`lIV, L
DataOutputStream output; //输出到文件的输出流 )mXu{uowr
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ~LN
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public SiteFileFetch(SiteInfoBean bean) throws IOException AtlUxFX0S
{ Rp""&0
siteInfoBean = bean; ~d6zpQf7>
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); y[:xGf]8@
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); #ruL+-8!<
if(tmpFile.exists ()) +,ZQ(
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{ z)y{(gR
bFirst = false; (ft$ R?
read_nPos(); [,ns/*f3R
} w>gB&59r
else G8p6p6*
{ f>_' ]eM%
nStartPos = new long[bean.getNSplitter()]; Y]{~ogsn$:
nEndPos = new long[bean.getNSplitter()]; |"EQyV
} 4] I7t
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} +(|
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public void run() m&8'O\$
{ ^NiS7 )FX
//获得文件长度 niJtgK:H^
//分割文件 iyf vcKO
//实例FileSplitterFetch 3N 5b3F
//启动FileSplitterFetch线程 qUtlh,4)
//等待子线程返回 C.;H?So(
try{ p{4nWeH?B
if(bFirst) p!3!&{
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nFileLength = getFileSize(); ?Q%X,!~\:
if(nFileLength == -1) 0T7""^'&
{ gCY%@?YyN
System.err.println("File Length is not known!"); Z |CL:)h
} -mK;f$X
else if(nFileLength == -2) EG[Rda
{ |.Y}2>{
System.err.println("File is not access!"); "_
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} )> |x 2q
else Z]1jg>")
{ hUGP3ExC*
for(int i=0;i<nStartPos.length;i++) }&O}t{gS*
{ S4FR=QuVQC
nStartPos = (long)(i*(nFileLength/nStartPos.length)); W #kOcw
} R<n'v.~"A
for(int i=0;i<nEndPos.length-1;i++) xF8^#J6>
{ 0'0GAh2
nEndPos = nStartPos[i+1]; I7q}<"`
} tjTnFP/=
nEndPos[nEndPos.length-1] = nFileLength; pw5uH
} %ryYa
} YRm6~c
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//启动子线程 ]3iQpL
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; i917d@r( <
for(int i=0;i<nStartPos.length;i++) zBTyRL
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{ I[v6Y^{q
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), %^CoWbU
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), -'mTSJ.}
nStartPos,nEndPos,i); I8:A]
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); yvp$s
fileSplitterFetch.start(); U sS"WflB
} ~y.t amNW
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), >Kjl>bq
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); TcM;6h`
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", zLda+
nEndPos = " + nFileLength); + =N#6#1
// fileSplitterFetch[nPos.length-1].start(); "MNI_C#{
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//等待子线程结束 txp^3dZ`^
//int count = 0; (6#,
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//是否结束while循环 Y ZyV
boolean breakWhile = false; -\V!f6Q
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while(!bStop) $)6%LG_@
{
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write_nPos(); lOuO~`,J
Utility.sleep(500); E+!A0!1
breakWhile = true; A,;V|jv9
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for(int i=0;i<nStartPos.length;i++) nA?Ks!9T
{ z[~ph/^
if(!fileSplitterFetch.bDownOver) gJC~$/2
{ vlS+UFH0
breakWhile = false; 3BzC'nplm
break;
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} b>Em~NMu_
} /_l$h_{DH
if(breakWhile) o!-kwtw`l
break; cA8A^Iv:0
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//count++; JULns#tx}
//if(count>4) y8arFG
// siteStop(); y1c2(K>tu
} M!)~h<YL
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System.err.println("文件下载结束!"); l}MVk%[
} yJn<S@)VT:
catch(Exception e){e.printStackTrace ();} lzDA0MPI:
} '`nf7b(
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//获得文件长度 ziTE*rNJ
public long getFileSize() [.j&~\AG
{ x=%wPVJ
int nFileLength = -1; tEFbL~n
try{ b[s=FH]#N
URL url = new URL(siteInfoBean.getSSiteURL()); L }L"BY3$
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); J,Rp&tavt:
httpConnection.setRequestProperty("User-Agent","NetFox"); <A`zK
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int responseCode=httpConnection.getResponseCode(); 3s
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if(responseCode>=400) VSLi{=#
{ k|D =Q
processErrorCode(responseCode); &~{0@/
return -2; //-2 represent access is error I:Q3r"1
} yYN _]&ag
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String sHeader; GMW,+
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for(int i=1;;i++) &X&msEM
{
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); cl1>S 3
//Utility.log(in.readLine()); TKs l.|
sHeader=httpConnection.getHeaderFieldKey(i); bJ5 VlK67R
if(sHeader!=null) GX0S9s
{ u #Y#,:{
if(sHeader.equals("Content-Length")) dk>qTY+j5
{ `),ACkU>U
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); _oAWj]~rO
break; %D6HY^]ayw
} E@[ZwTnJ
} wGhy"1g#
else L)yc_ d5
break; @tzL4hy%^j
} ={[9kR i
} Ce`#J6lT
catch(IOException e){e.printStackTrace ();} #Pr
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catch(Exception e){e.printStackTrace ();} V<ExR@|}.%
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Utility.log(nFileLength); hA:RVeS{
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return nFileLength; M T]2n{e
} 4D=^24f`0
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//保存下载信息(文件指针位置) aaRc?b'/
private void write_nPos() C7Ny-rj}IA
{ Gph:'3
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try{ #fT<]j(
output = new DataOutputStream(new FileOutputStream(tmpFile)); zTS P8Q7
output.writeInt(nStartPos.length); hmp!|Q[)
for(int i=0;i<nStartPos.length;i++) oxZXY]$y
{ XpIl-o&re
// output.writeLong(nPos); (,^jgv|I
output.writeLong(fileSplitterFetch.nStartPos); 0'zX6%
output.writeLong(fileSplitterFetch.nEndPos); hF`Qs
} w itx_r
output.close(); P&sYS<9q
} ^t}8E2mq
catch(IOException e){e.printStackTrace ();} lcfX(~/m^
catch(Exception e){e.printStackTrace ();} " 3tk"#.#
} (8Q*NZ
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//读取保存的下载信息(文件指针位置) =O??W8u
private void read_nPos() "Ta"5XW
{ bwyj[:6l
try{ lN~u='Kc
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); z$Z{ LR
int nCount = input.readInt(); \'.|7{Xu
nStartPos = new long[nCount]; s6(bTO.
nEndPos = new long[nCount]; `G "&IQ8.
for(int i=0;i<nStartPos.length;i++) 7u<C&Z/
{ wu~ ?P `
nStartPos = input.readLong(); LXS)(-&
nEndPos = input.readLong(); T7LO}(I.&
} {66P-4Ev(
input.close(); Ft<B[bQ
} ycj\5+g
catch(IOException e){e.printStackTrace ();} ^SWV!rrg
catch(Exception e){e.printStackTrace ();} +j(7.6ia
} w)Z-, J
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private void processErrorCode(int nErrorCode) jX&/ e'B
{ 9a$ 7$4m
System.err.println("Error Code : " + nErrorCode); g).IF.
} 0JU+v:J[=
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//停止文件下载 0S#T}ITm4Z
public void siteStop() wo5fGQJ
{ *('Vyd!n
bStop = true; P2g}G4qf
for(int i=0;i<nStartPos.length;i++) nO
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fileSplitterFetch.splitterStop(); SQ-CdpT<
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} a St:G*a"
} MeDlsO
//负责部分文件的抓取 CPci
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**FileSplitterFetch.java MnTqWC90
*/ !0X/^Xv@=
package NetFox; gt\*9P
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import java.io.*; mGh8/Xt
import java.net.*; V6kJoSyde
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public class FileSplitterFetch extends Thread { eOZ"kw"uHu
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String sURL; //File URL ,m[#<}xXA
long nStartPos; //File Snippet Start Position j7yUya&
long nEndPos; //File Snippet End Position Bmv5yc+;
int nThreadID; //Thread's ID |h-e+Wh1
boolean bDownOver = false; //Downing is over @ +yjt'B
boolean bStop = false; //Stop identical 8fA8@O}
FileAccessI fileAccessI = null; //File Access interface ( 9(NP_s
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ?X@uR5?{
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this.sURL = sURL; \[<8AV"E-'
this.nStartPos = nStart; u9j1>QU
this.nEndPos = nEnd; h3j`X'
nThreadID = id; YQ`88z
fileAccessI = new FileAccessI(sName,nStartPos);//定位 r<!/!}fE,
} zxC~a97`
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public void run() \kP1 Jr
{ G;AJBs>Y}
while(nStartPos < nEndPos && !bStop) 6+/BYN!&4
{ n!h952"
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try{ VJS1{n=;k
URL url = new URL(sURL); "0m\y+%8
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); $GQ{Ai:VwF
httpConnection.setRequestProperty("User-Agent","NetFox"); />O.U?
String sProperty = "bytes="+nStartPos+"-"; i QvqifDmh
httpConnection.setRequestProperty("RANGE",sProperty); M3s:B& /
Utility.log(sProperty); ,U.|+i{
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InputStream input = httpConnection.getInputStream(); kiu#THF
//logResponseHead(httpConnection); ^zKP5nzL
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byte[] b = new byte[1024]; VEx
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int nRead; m%U$37A1
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) y4,t=Gq7^
{ GpXU&A'r
nStartPos += fileAccessI.write(b,0,nRead); zU";\);
//if(nThreadID == 1) %Mf3OtPiJW
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); TNlS2b1
} ~|&To>
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Utility.log("Thread " + nThreadID + " is over!"); G$t:#2
bDownOver = true; R<Ct{f!
//nPos = fileAccessI.write (b,0,nRead); @+hO,WXN
} b&!x.+d-z
catch(Exception e){e.printStackTrace ();} 9>ML;$T&
} .NMZHK?%
} TRFza}4:i
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//打印回应的头信息 VKu|=m2vB
public void logResponseHead(HttpURLConnection con) USV;j%U4*
{ a 1~@m[
for(int i=1;;i++) b$Q#Fv&P
{ __i))2
String header=con.getHeaderFieldKey(i); oT- Y
if(header!=null) J :l%
//responseHeaders.put(header,httpConnection.getHeaderField(header)); IYe ,VL
Utility.log(header+" : "+con.getHeaderField(header)); K<p)-q
else 9^@#Ua
break; u(~( +1W
} !BR@"%hx
} &"=<w
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public void splitterStop() Fr hI[D
{ 86W.z6
bStop = true; A>rN.XW
} 3-_`x9u*
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} v
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/* A[H"(E#k
**FileAccess.java @VnK/5opS
*//文件访问(定位,写) rhC
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package NetFox; v\-7sgZR
import java.io.*; KA
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public class FileAccessI implements Serializable{ D YTC2
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 ^F87gow%`B
RandomAccessFile oSavedFile; B1o*phM
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long nPos; W"H(HA
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public FileAccessI() throws IOException sK7b4gmK
{ ,R=)^Gh{
this("",0); 5)i+x-
} qTV.DCP
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public FileAccessI(String sName,long nPos) throws IOException T_oL/x_;
{ M!
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oSavedFile = new RandomAccessFile(sName,"rw"); lGX8kAv?
this.nPos = nPos; K*N8Vpz(
oSavedFile.seek(nPos); 14yzGhA
} {$'oKJy*
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public synchronized int write(byte[] b,int nStart,int nLen) uwu`ms7z 2
{ +,J!xy+~,
int n = -1; 9%DLdc\z;
try{ j!K{1s[.y
oSavedFile.write(b,nStart,nLen); EB8<!c ?
n = nLen; ~Z5Wwp]a
} *P+8^t#Vp
catch(IOException e) te&p1F
{ ?e[]UO
e.printStackTrace (); J:0`*7
} U8 n=Ro
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return n; c4M]q4]F
} kjj?X|Un
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} <4%PT2R
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/* 9C| -|mo
**SiteInfoBean.java 3j w4#GW
*/ yi,Xs|%.
package NetFox; bqRO-\vO
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public class SiteInfoBean { )gNVJ
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private String sSiteURL; //Site's URL :@J.!dokF
private String sFilePath; //Saved File's Path +6f[<^K#
private String sFileName; //Saved File's Name >/y+;<MZ
private int nSplitter; //Count of Splited Downloading File L%I8no-Q
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public SiteInfoBean() lA,*]Mr~
{//nSplitter的缺省值为5 YH{FTVOt{C
//default value of nSplitter is 5 3'[
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this("","","",5); e# KP3Lp
} :jGgX>GG
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) %^bN^Sq
-
{ DaqpveKa
sSiteURL= sURL; F,JqHa9
sFilePath = sPath; t8t+wi!
sFileName = sName; "^5 %g%
this.nSplitter = nSpiltter; :tX,`G
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} =7-@&S=?s
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public String getSSiteURL() K"VRHIhfg
{ |%fM*F^7/
return sSiteURL; 6='x}Qb \H
} #)( D_*
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public void setSSiteURL(String value) qfyuq]
{ _hi8mo
sSiteURL = value; `D0Hu!;
} *w6(nG'M{
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public String getSFilePath() 2~QN#u|UC3
{ P
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return sFilePath; zE]h]$oi
} =Y-mc#{8
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public void setSFilePath(String value) HI{IC!6
{ nmUMg
sFilePath = value; o7v,:e:
} B-[qS;PY%
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public String getSFileName() CF/8d6}Vf
{ z460a[Wl
return sFileName; Mtq^6`JJ'
} 4_h?E:sBb
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public void setSFileName(String value) ^"EK:|Y4%K
{ yn.f?[G2
sFileName = value; <{1=4PA
} 48n 7<M;I
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public int getNSplitter() y!jq!faqt
{ dR
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return nSplitter; ;7N~d TBQ
} S3> <zGYk
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public void setNSplitter(int nCount) \Culf'iX
{ ,2lH*=m;
nSplitter = nCount; aYcc2N%C
} 9u] "($
} Oq*=oz^~1
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/* &