/* Rlq7.2cP
**SiteFileFetch.java }icCp)b>v
*/ yM_/_V|G
package NetFox; R<|\Z@z
import java.io.*; 2b"*~O;
import java.net.*; sZ `Tv[
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public class SiteFileFetch extends Thread { M:+CW;||!
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SiteInfoBean siteInfoBean = null; //文件信息Bean @v-^j
long[] nStartPos; //开始位置 1/DtF
long[] nEndPos; //结束位置 1By tu >2
FileSplitterFetch[] fileSplitterFetch; //子线程对象 e(c\ U}&
long nFileLength; //文件长度 v:O{"s
boolean bFirst = true; //是否第一次取文件 G%W9?4_K
boolean bStop = false; //停止标志 1T^WMn:U
File tmpFile; //文件下载的临时信息 ]2AOW}=
DataOutputStream output; //输出到文件的输出流 X 4;U4pU#
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) I68u%fCv
public SiteFileFetch(SiteInfoBean bean) throws IOException SB62(#YR
{ )GP;KUVae
siteInfoBean = bean; te@m#`p9
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); yV^Yp=f_
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); EC+t-:a]
if(tmpFile.exists ()) g6M>S1oOO
{ -gn0@hS0
bFirst = false; {##G.n\~
read_nPos(); ?ANWI8'_j
} Cfi{%,em
else iOfm:DTPr
{ 3.&BhLT
nStartPos = new long[bean.getNSplitter()]; XC<fNK
nEndPos = new long[bean.getNSplitter()]; 8Km&3nCv$Q
} JPI%{@Qc^
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} dSDZMB sd
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public void run() h+km? j
{ axQ>~vWN/
//获得文件长度 @-@Coy 4Tt
//分割文件 o/AG9|()4
//实例FileSplitterFetch hh;kBv07o
//启动FileSplitterFetch线程 Ww<Y]H$xZ<
//等待子线程返回 YidcV lOsO
try{ is;g`m
if(bFirst) M9"Bx/
{ W;u.@I&
nFileLength = getFileSize();
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if(nFileLength == -1) C:Ef6ZW
{ P1F-Wy1
System.err.println("File Length is not known!"); f)sy-o!
} ,TBOEu."4
else if(nFileLength == -2) #Xg;E3BM
{ \8CCa(H
System.err.println("File is not access!"); 'FW?
} Bii'^^I;?
else 86#l$QaK{
{ TQR5V\{&%
for(int i=0;i<nStartPos.length;i++) Z`TfS+O6
{ 'sEnh<
nStartPos = (long)(i*(nFileLength/nStartPos.length)); b9H(w%7ucU
} Q<sqlh!h
for(int i=0;i<nEndPos.length-1;i++) h&4s%:_4
{ @.;+WQE
nEndPos = nStartPos[i+1]; F5?S8=i
} ~&Z>fgOTJ
nEndPos[nEndPos.length-1] = nFileLength; )^:H{1'
} _c-3eQ1
} [Uup5+MCv
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//启动子线程 < $zJi V
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; oN032o?S
for(int i=0;i<nStartPos.length;i++) JBY.er`6C
{ 217G[YE-
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Lu#q o^
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), %+*=Vr
nStartPos,nEndPos,i); TpU\IQ
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); |=;hQ2HyF
fileSplitterFetch.start(); P~ObxY|
} ]p! {
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 3)G~ud
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); _xKn2 ?d8g
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", [c{\el9H
nEndPos = " + nFileLength); a_Y<daRO
// fileSplitterFetch[nPos.length-1].start(); >oW]3)$4S
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//等待子线程结束 bRvGetX
//int count = 0; -,8LL@_
//是否结束while循环 HzTmNm)
boolean breakWhile = false; bYsX?0T!p
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while(!bStop) sS-dHa
{ kqBZsfF
write_nPos(); x9YQd69
Utility.sleep(500); TIGtX]`
breakWhile = true; ^aL> /'Y#|
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for(int i=0;i<nStartPos.length;i++) h56s ~(?O
{ mP ^*nB@,
if(!fileSplitterFetch.bDownOver) pR~"p#Y
{ 7FP
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breakWhile = false; \
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break; ~*G}+Ur$2
} bKPjxN?!9
} _dn*H-5hO
if(breakWhile) G)7J$4R
break; ;0E[ ;
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//count++; 2H`;?#Uq:
//if(count>4)
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// siteStop(); [AAIBb+U
} eLop}*k
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System.err.println("文件下载结束!"); [[8h*[:
} -<gQ>`(0
catch(Exception e){e.printStackTrace ();} OMN|ea.O
} ^p #bxN")
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//获得文件长度 5?gZw;yiv%
public long getFileSize() ;F>I+l_X
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int nFileLength = -1; yg@}j
try{ >U')ICD~
URL url = new URL(siteInfoBean.getSSiteURL()); A/*h[N+2!
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); T
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httpConnection.setRequestProperty("User-Agent","NetFox"); .[X"+i\
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int responseCode=httpConnection.getResponseCode(); JWs?az
if(responseCode>=400) ,zrShliU
{ qt#4i.Iu+
processErrorCode(responseCode); N`i`[ f
return -2; //-2 represent access is error Nx4X1j?-n
} 3`\)Qm
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String sHeader; Y@M
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for(int i=1;;i++) vE+OL8 V
{ xDBHnr}[
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); +S>}<OE
//Utility.log(in.readLine()); IpMZ{kJlv`
sHeader=httpConnection.getHeaderFieldKey(i); @](\cT64i3
if(sHeader!=null) f:K`MW
{ T@H2[ 7[;
if(sHeader.equals("Content-Length")) T~'9p`IW
{ * E3
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); O1K~]Nt
break; z;EnAy {9
} *Ad7GG1/u
} p~THliwd
else w~(x*R}
break; aF\?X&|
} 1z[GY RSt
} 5Pl~du
catch(IOException e){e.printStackTrace ();} :-kXZe
catch(Exception e){e.printStackTrace ();} g"Z X1X
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Utility.log(nFileLength); A?xb
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return nFileLength; C=/nZGG
}
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//保存下载信息(文件指针位置) pQY.MZSA
private void write_nPos() 6uijxia
{ 61J01(+|
try{ R]Q4+
output = new DataOutputStream(new FileOutputStream(tmpFile)); Q`}n;DV
output.writeInt(nStartPos.length); oGLSk(T&I
for(int i=0;i<nStartPos.length;i++) L.xzI-I@D
{ FT*
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// output.writeLong(nPos); ]{[VTjC7rY
output.writeLong(fileSplitterFetch.nStartPos); 7^~pOFdH
output.writeLong(fileSplitterFetch.nEndPos); WqC6c&NM
} &:` 7
output.close(); fxQN
} [-sE:O`yt
catch(IOException e){e.printStackTrace ();} F=hfbCF5x
catch(Exception e){e.printStackTrace ();} ^J>jU`)CJ
} M,Px.@tw.
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//读取保存的下载信息(文件指针位置) e.0vh?{\
private void read_nPos() )]%GNdU
{ %Ya-;&;`
try{ OwQ 9y<v
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); V\kf6E
int nCount = input.readInt(); 1Ly?XNS
nStartPos = new long[nCount]; J|Lk::Ri
nEndPos = new long[nCount]; U"xI1fg%b
for(int i=0;i<nStartPos.length;i++) Y1
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{ VPf*>ph=
nStartPos = input.readLong(); kvdzD6T
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nEndPos = input.readLong(); HPT9B?^
} Ox&g#,@h
input.close(); O;:8mm%(
} t9PS5O ;
catch(IOException e){e.printStackTrace ();} -[a0\H
catch(Exception e){e.printStackTrace ();} (0"9562
} f$k#\=2%
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private void processErrorCode(int nErrorCode) EPr{1Z
{ u:N/aaU=
System.err.println("Error Code : " + nErrorCode); X63DBF4A
} /wCee G,<
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//停止文件下载 DnaG$a<
public void siteStop() ~?6V-m{>#
{ P7E}^y`e
bStop = true; KI$?0O
for(int i=0;i<nStartPos.length;i++) U;6~]0^K
fileSplitterFetch.splitterStop(); $RKd@5XP
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} lV$U!v:b
} J
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//负责部分文件的抓取 Os8]iNvW\
**FileSplitterFetch.java 6yTL7@V|B
*/ u3 ?+Hu|*T
package NetFox; ygUvO3Z
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import java.io.*; bR*T}w$<
import java.net.*; c.,:rX0S
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public class FileSplitterFetch extends Thread { KL.{)bi
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String sURL; //File URL g=b[V
long nStartPos; //File Snippet Start Position n1uJQt
long nEndPos; //File Snippet End Position / vje='[!
int nThreadID; //Thread's ID jfqWcX.X=
boolean bDownOver = false; //Downing is over =[t( [DG
boolean bStop = false; //Stop identical U`<EpO{j|
FileAccessI fileAccessI = null; //File Access interface 52l|
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException A~nq4@uj
{ (rZq0*
this.sURL = sURL; s4MP!n?gB
this.nStartPos = nStart; YV{^S6M
this.nEndPos = nEnd; l%fnGe` _
nThreadID = id; M29[\@zL
fileAccessI = new FileAccessI(sName,nStartPos);//定位 $hndb+6q
} *M+:GH/5
/
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public void run() # dW$"u
{ 1x M&"p:
while(nStartPos < nEndPos && !bStop) >\}2("bv
{ Gu*;z% b2
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try{ \)y5~te*
URL url = new URL(sURL); Jev@IORN\
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); jW2z3.w
httpConnection.setRequestProperty("User-Agent","NetFox"); ] =>vv;L
String sProperty = "bytes="+nStartPos+"-"; ;13lu1
httpConnection.setRequestProperty("RANGE",sProperty); ,a^_
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Utility.log(sProperty); ?PyI#G
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InputStream input = httpConnection.getInputStream(); _u{D #mmO
//logResponseHead(httpConnection); JsfbY^wz
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byte[] b = new byte[1024]; JWMIZ{/M
int nRead; $vGl Z<3g
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 'cH),~ z
{ (X>r_4W$
nStartPos += fileAccessI.write(b,0,nRead); I|Z5*iXqCm
//if(nThreadID == 1) d<7xSRC
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); DNki
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} 1__p1
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Utility.log("Thread " + nThreadID + " is over!"); mjBXa
bDownOver = true; [.Kia
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//nPos = fileAccessI.write (b,0,nRead); ;K$E;ZhPN
} !WVF{L,/I
catch(Exception e){e.printStackTrace ();} VEb}KFyP
} ix7N q7!N
} P-^Z7^o-bX
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//打印回应的头信息 qr<5z. %
public void logResponseHead(HttpURLConnection con) Gt6$@ji4u
{ *QjFrw3
for(int i=1;;i++) P}?,*'b
{ A`X$jpAn&
String header=con.getHeaderFieldKey(i); k*z)AR
if(header!=null) 3TtnLay.k
//responseHeaders.put(header,httpConnection.getHeaderField(header)); 5Z`f)qE
Utility.log(header+" : "+con.getHeaderField(header)); jw(v08u >
else _h@e.BtDs
break; !n)2HDYhx,
} zJdlHa{
} \i`/k(
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public void splitterStop() HlI*an
{ <5C3c&sds
bStop = true; G.T}^xHmL
} kCN9`9XI{
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} ;znIY&Z
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/* kS=OX5
**FileAccess.java ~p8-#A)X,)
*//文件访问(定位,写) [gH
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package NetFox; nJ'O(Wh,)
import java.io.*; }v@w(*)h:
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public class FileAccessI implements Serializable{ P) GBuW
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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 `4 w0*;k;
RandomAccessFile oSavedFile; ho fZpM
long nPos; KcNEB_i
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public FileAccessI() throws IOException /-G;#Wm
{ 'iUfr@
this("",0); Tv~<W4
} 9s5CqB
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public FileAccessI(String sName,long nPos) throws IOException K^s!0[6
{ duT2:~H2
oSavedFile = new RandomAccessFile(sName,"rw");
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this.nPos = nPos; TQ>kmHWf/
oSavedFile.seek(nPos); CKNH/[ZR,
} rv:,Os_
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public synchronized int write(byte[] b,int nStart,int nLen) i&{8a3B
{ dl(cYP8L
int n = -1; rc9 \
try{ " 0K5
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oSavedFile.write(b,nStart,nLen); i nF&Pv