/* 2i"HqAB
**SiteFileFetch.java l"?]BC~
*/ E6JV}`hSk
package NetFox; [nC4/V+-
import java.io.*; $&Ac5Zo%}
import java.net.*; `M6YblnJZ
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public class SiteFileFetch extends Thread { 2gH_$
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SiteInfoBean siteInfoBean = null; //文件信息Bean e+x*psQ
long[] nStartPos; //开始位置 GGp{b>E+
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long[] nEndPos; //结束位置 0hb/`[Q
FileSplitterFetch[] fileSplitterFetch; //子线程对象 5C*?1&
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long nFileLength; //文件长度 >z5Oy
boolean bFirst = true; //是否第一次取文件 y78z>(jV
boolean bStop = false; //停止标志 h%/ssB
File tmpFile; //文件下载的临时信息 >07shNX
DataOutputStream output; //输出到文件的输出流 >waN;&>/
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) }oV3EIH
public SiteFileFetch(SiteInfoBean bean) throws IOException M-vC>u3Y
{ bbO+%-(X
siteInfoBean = bean; wyNC|P;j$g
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); =}"R5
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); "W3W:vl!
if(tmpFile.exists ()) 3 ^pYCK%
{ :K:f^o]s
bFirst = false; jB` 7T^bU
read_nPos(); .dt#2a_5q
} d~3GV(M
else u9 %;{:]h
{ 3m3
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nStartPos = new long[bean.getNSplitter()]; MHGj vSx
nEndPos = new long[bean.getNSplitter()]; d`UF0T
} *J.c $1#h
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} W.z$a.<(rF
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public void run() 7Onk!NH
{ 3V"dG1?
//获得文件长度 ^z38<L=z"
//分割文件 zv`zsqDJ
//实例FileSplitterFetch CJ0$;et
//启动FileSplitterFetch线程 ktU9LW~
//等待子线程返回 n}+wd9J*!2
try{ W3"vTZJF
if(bFirst) k"0%' Y
{ c
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nFileLength = getFileSize(); cgzy0$8dj\
if(nFileLength == -1) L,O>6~9:^1
{ )Kxs@F
System.err.println("File Length is not known!"); j1W
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} >s44
else if(nFileLength == -2) Io2,% !D
{ 8TUF w@H%
System.err.println("File is not access!"); i'U,S`L6>
} ;g&7*1E
else YmZC?x_{M2
{ zI1(F67d`
for(int i=0;i<nStartPos.length;i++) G,+xT}@wu
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); PQ6T|>
} r$94J'_
for(int i=0;i<nEndPos.length-1;i++) "sdcP8])d
{ <.;@ksCPW{
nEndPos = nStartPos[i+1]; vM5k4%D
} :O5Tr03z
nEndPos[nEndPos.length-1] = nFileLength; G[ ,,L
} \a\^(`3a[
} aeLBaS
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//启动子线程 6-D%)Z(
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; PY[Sz=[
for(int i=0;i<nStartPos.length;i++) /,=Wy"0TJ
{ e!TG< (S
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), =ltbS f7
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), TXA. 6e
nStartPos,nEndPos,i); H't `Q&]a
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ~3LhcU-
fileSplitterFetch.start(); f<Va<TL6-
} FEge+`{,
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), J,CJPUf&
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); /+Wb6{lY
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Dh*~U:6$g
nEndPos = " + nFileLength); n P0Ziu'{
// fileSplitterFetch[nPos.length-1].start(); C~3@M<X
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//等待子线程结束 I|Vk.,
//int count = 0; jB}_Slh1j
//是否结束while循环 :_W0Af09
boolean breakWhile = false; Tb>IHoil
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while(!bStop) 3(oZZz
{ I8E\'`:<
write_nPos(); V#n?&-{V
Utility.sleep(500); 1^n5CI|7u
breakWhile = true; 8A`p
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for(int i=0;i<nStartPos.length;i++) \c5#\1<
{ 'p4da2%
if(!fileSplitterFetch.bDownOver) p{\qSPK
{ ]w1BJZa36
breakWhile = false; (ouRf;\6$8
break; wz*)L
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} U'f$YVc
} wa-_O<
if(breakWhile) 'fp<FeTg
break; NgDZ4&L
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//count++; "<g?x`iz
//if(count>4) -f-O2G=
// siteStop(); t-?KKU8
} Z<$E.##
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System.err.println("文件下载结束!"); N,'[:{GOY
} r7]?g~zb
catch(Exception e){e.printStackTrace ();} iA1;k*)q
} W(]E04
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//获得文件长度 %_%f#S
public long getFileSize() KoxGxHz^Y3
{ {="Su{i}}
int nFileLength = -1; lEVQA*u[
try{ 2l\D~ y
URL url = new URL(siteInfoBean.getSSiteURL()); oF 1W}DtA
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); khKv5K#)
httpConnection.setRequestProperty("User-Agent","NetFox"); cq@_*:~Or
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int responseCode=httpConnection.getResponseCode(); 5<:VJC<
if(responseCode>=400) m=("N
{ Sm*Jysy`
processErrorCode(responseCode); HL}sqcp
return -2; //-2 represent access is error o[Wagg.%
} % RBI\tj
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String sHeader; ,_5YaX:<4
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for(int i=1;;i++) :!Y?j{sGU
{ _taHf %\4
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); `K@df<}%*,
//Utility.log(in.readLine()); d-#u/{jG)
sHeader=httpConnection.getHeaderFieldKey(i); #*7/05)
if(sHeader!=null) FJwZo}<6E
{ 6S&=OK^
if(sHeader.equals("Content-Length")) 9wDBC~.
{ @FnI?Rx
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Ok~W@sYST
break; >TQBRA;'
} GP7)m
} w50Bq&/jX
else fW4cHB9|
break; I]WeZ,E
} ?( dYW7S
} Vm,f3~
catch(IOException e){e.printStackTrace ();} r%m7YwXo
catch(Exception e){e.printStackTrace ();} kS\.
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Utility.log(nFileLength); DS,FVh".|
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return nFileLength; +DbWMm
} "o5gQTwb
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//保存下载信息(文件指针位置) tci%=3,)
private void write_nPos() HC;I0&v>
{ 8t*%q+Z
try{ 5w [=
output = new DataOutputStream(new FileOutputStream(tmpFile)); mB|mt+
output.writeInt(nStartPos.length); M_e$l`"G
for(int i=0;i<nStartPos.length;i++) *|gs-<[#X
{ eV{FcJha
// output.writeLong(nPos); zcD_}t_K
output.writeLong(fileSplitterFetch.nStartPos); "<jEI /
output.writeLong(fileSplitterFetch.nEndPos); mZ0oa-Iy
} %Dr4~7=7a
output.close(); 0@FM^ejA#
} e
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catch(IOException e){e.printStackTrace ();} @BHS5^|
catch(Exception e){e.printStackTrace ();}
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} "aCb;2Rs
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//读取保存的下载信息(文件指针位置) 4gkV]"
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private void read_nPos() #Wc #fP
{ T
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try{ 3}#XA+Z
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); b#I*~
int nCount = input.readInt(); >2Qqa;nx|
nStartPos = new long[nCount]; ?lwQne8/
nEndPos = new long[nCount]; kj3o1 Y
for(int i=0;i<nStartPos.length;i++) u0oYb_Yv
{ M6hvi(!X2
nStartPos = input.readLong(); vb"dX0)<
nEndPos = input.readLong(); 1-NX>E5
} dj'8x48H2W
input.close(); nwZr3r
} ,<P[CUD&&
catch(IOException e){e.printStackTrace ();} *A1TDc$
catch(Exception e){e.printStackTrace ();} }jY[| >z
} #!d^3iB2
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private void processErrorCode(int nErrorCode) xm10
{ /E4 }d=5L
System.err.println("Error Code : " + nErrorCode); ,8"[ /@
} C}P
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//停止文件下载 ~~:8Yv[(
public void siteStop() 97))'gC
{ >5@vY?QXO
bStop = true; })0 7u
for(int i=0;i<nStartPos.length;i++) %M,d/4=P
fileSplitterFetch.splitterStop(); `jQ}^wEgu
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} R5;eR(24G
} `i)ePiE
//负责部分文件的抓取 ?5YmE(v7
**FileSplitterFetch.java PD
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*/ +-!|%jG`%v
package NetFox; h. (;GJO
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import java.io.*; B?ob{K@
import java.net.*; PUZXmnB
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public class FileSplitterFetch extends Thread { ~B*\k^t`
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String sURL; //File URL oJJk
long nStartPos; //File Snippet Start Position 2SPFjpG8n
long nEndPos; //File Snippet End Position .f<VmUca
int nThreadID; //Thread's ID fYQi#0drn
boolean bDownOver = false; //Downing is over i`nw"8
boolean bStop = false; //Stop identical '/Cz{<,
FileAccessI fileAccessI = null; //File Access interface Ce'2lo
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException j% USu+&
{ 8(/f!~
this.sURL = sURL; p,u<gJUL
this.nStartPos = nStart; KIBZQ.uG
this.nEndPos = nEnd; |Sv #f2`
nThreadID = id; 2d;xAX ]
fileAccessI = new FileAccessI(sName,nStartPos);//定位 PW//8lsR
} >Wit"p
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public void run() |wb(rua
{ hG;=ci3EE
while(nStartPos < nEndPos && !bStop) y'O{8Q8T
{
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try{ JR<-'
URL url = new URL(sURL); .d!*<`S|
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 3R:i*8C
httpConnection.setRequestProperty("User-Agent","NetFox"); <.(/#=2
String sProperty = "bytes="+nStartPos+"-"; z slEUTj)
httpConnection.setRequestProperty("RANGE",sProperty); 1HWJxV"
Utility.log(sProperty); j4SGA#;v
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InputStream input = httpConnection.getInputStream(); L.:QI<n
//logResponseHead(httpConnection); _%TeTNY#
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byte[] b = new byte[1024]; N&h!14]{Z
int nRead; 6Oba}`)q9
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 1`_)%Y[ZJ
{ dsZ( D:)
nStartPos += fileAccessI.write(b,0,nRead); 4bzn^
//if(nThreadID == 1) w]-iM
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); O Lup`~
} G( \1{"!
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Utility.log("Thread " + nThreadID + " is over!"); y/6LMAI
bDownOver = true; |B$\3,
//nPos = fileAccessI.write (b,0,nRead); A y[L{!)2{
} KmOa^vY1.T
catch(Exception e){e.printStackTrace ();} xLK0~|_#!
} 'R'a/ZR`B7
} 9:w,@Phe
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//打印回应的头信息 qML*Kwg
public void logResponseHead(HttpURLConnection con) .%Q Ea_\
{ Byj~\QMD|
for(int i=1;;i++) -?1J+}?
{ iPO
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String header=con.getHeaderFieldKey(i); HYmUxheN2
if(header!=null) Hll}8d6[
//responseHeaders.put(header,httpConnection.getHeaderField(header)); Ht^2)~e~:
Utility.log(header+" : "+con.getHeaderField(header)); Py]ci`27
else c!^}!32j)
break; \o)4m[oF
} <1.mm_pw
} -%)
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public void splitterStop() xF|*N<9(</
{ .LR>&N _U
bStop = true; Z?'|9FM
} ea>\.D-S
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