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**SiteFileFetch.java es(vWf'
*/ %]Nz54!
package NetFox; rd1&?X
import java.io.*; ix&hsNzD
import java.net.*; ?I 1@:?Qi
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public class SiteFileFetch extends Thread { {+t'XkA
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SiteInfoBean siteInfoBean = null; //文件信息Bean Qg
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long[] nStartPos; //开始位置 O!]wJ
long[] nEndPos; //结束位置 <$njU=YE&
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ^?xXP=/
long nFileLength; //文件长度 ;|/7o@$n
boolean bFirst = true; //是否第一次取文件 }RUC#aW1
boolean bStop = false; //停止标志 6]gs{zG
File tmpFile; //文件下载的临时信息 D0k7)\puQ
DataOutputStream output; //输出到文件的输出流 D1O7S]j
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 28BiuxVW
public SiteFileFetch(SiteInfoBean bean) throws IOException ($W9
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{ ccm <rZ7
siteInfoBean = bean; "ej>1{3Y:=
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); uR)@v^$FE
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ]-fZeyY$
if(tmpFile.exists ()) Il;'s
{ Z gU;=.
bFirst = false; sX_ ^H%fd
read_nPos(); !P92e1
} {fN_itn
else f(n{7
{ d)o<R;F
nStartPos = new long[bean.getNSplitter()]; JrL/LGY
nEndPos = new long[bean.getNSplitter()]; -GKelz?h>
} LbYI{|_Js
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} dadMwe_l0
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public void run() QX]tD4OH
{ (I~,&aBr
//获得文件长度 n`:l`n>N$
//分割文件 xZhD6'Zzz
//实例FileSplitterFetch 5^d%+*l;q
//启动FileSplitterFetch线程 G+g`=7
//等待子线程返回 Ixec]UOS
try{ DU7Ki6
if(bFirst) )v-* Wr eS
{ z!L0j+
nFileLength = getFileSize(); |XH3$;=*h
if(nFileLength == -1) ;5% &q6&a
{ +NXj/
System.err.println("File Length is not known!"); f@/qW!o
} -=sxbs.aA
else if(nFileLength == -2) \A~
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{ *r%mqAx(
System.err.println("File is not access!"); <m6I)}K
} p$%h!.~99T
else ca-n:1
{ u('OHPqq
for(int i=0;i<nStartPos.length;i++) ntkinbbD
{ bA^a@ lv a
nStartPos = (long)(i*(nFileLength/nStartPos.length));
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} 7kwG_0QO
for(int i=0;i<nEndPos.length-1;i++) p.}[!!m P
{ p4AXQuOP
nEndPos = nStartPos[i+1]; lb6s3b
} /1>
nEndPos[nEndPos.length-1] = nFileLength; q,(&2./
} {Jy%h8n*
} 2b"5/$|6
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//启动子线程 h1gb&?w5P
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; QJE-$ :
for(int i=0;i<nStartPos.length;i++) N^ET
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{ }-Ma~/
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), dDuA%V0
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), =Fs LF
nStartPos,nEndPos,i); uE|[7,D7;u
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); -*Pt781
fileSplitterFetch.start(); Zn} )&Xt
} ]`kvq0Gyb
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), J-ZM1HoB
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); gdZVc9_
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", i;xMf5Jz
nEndPos = " + nFileLength); <Ztda !
// fileSplitterFetch[nPos.length-1].start(); eJA{]^Zf
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//等待子线程结束 +UsR
//int count = 0; ,TtDCcjd%f
//是否结束while循环 ,Ex\\p-
boolean breakWhile = false; 2~U+PyeNz
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while(!bStop) stG&(M
{ &sgwY
write_nPos(); *u>\&`h=
Utility.sleep(500); iQIw]*h^
breakWhile = true; `;qZ$HH
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for(int i=0;i<nStartPos.length;i++) Om"3Q/&
{ Mfr#IzNHN
if(!fileSplitterFetch.bDownOver) <khAc1"
{ UmE{>5Pt
breakWhile = false; \|t0~sRwh
break; _Xv/S_yW
} ;$E[u)l
} M(E_5@?3
if(breakWhile) >z
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break; t5APD?5 c
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//count++; 7tpZE+OX
//if(count>4) -YyH"f
// siteStop(); r97[!y1gt
} Y
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System.err.println("文件下载结束!"); NXNon*"
} sZB6zTX
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catch(Exception e){e.printStackTrace ();} HXHPz4
} =eoxT
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//获得文件长度 z n!
public long getFileSize() 49$4
{ K@~#Gdnl
int nFileLength = -1; }x1IFTa!
try{ G0>Wk#or
URL url = new URL(siteInfoBean.getSSiteURL()); IyN9
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); rM=A"
httpConnection.setRequestProperty("User-Agent","NetFox"); yjR
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int responseCode=httpConnection.getResponseCode(); hF7mJ\
if(responseCode>=400) PcHFj+:
{ JJ0
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processErrorCode(responseCode); ejY5n2V#=
return -2; //-2 represent access is error #/dde9y
} jGhg~-m
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String sHeader; 8m6 nw0
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for(int i=1;;i++) mVAm ^JK
{ 7 aD&\?
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); \X.=3lc&
//Utility.log(in.readLine()); )o</gt )
sHeader=httpConnection.getHeaderFieldKey(i); z
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if(sHeader!=null) 32LB*zc
{ N>Y50
if(sHeader.equals("Content-Length")) Z;'.pU~
{ /j/%wT2m
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 08?MS_
break; Z*>/@ J}
} f$|v0Xs
} o>-v?Ug
else s7i.p]
break; e=UVsYNx
} z\8yB`8b^
} MH;%Y"EI
catch(IOException e){e.printStackTrace ();} {4aY}=
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catch(Exception e){e.printStackTrace ();} Q]5^Eiq8
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Utility.log(nFileLength); sg"D;b:X
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return nFileLength; 3t{leuO'
} lO:{tV
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//保存下载信息(文件指针位置) |kNGpwpI
private void write_nPos() ^r_lj$:+$
{ LA`VqJ
try{ x0h3jw+6
output = new DataOutputStream(new FileOutputStream(tmpFile)); ![]I%'s
output.writeInt(nStartPos.length); u\6]^T6
for(int i=0;i<nStartPos.length;i++) n=o'ocdS)
{ tm1UH 4
// output.writeLong(nPos); 6Hbf9,vI
output.writeLong(fileSplitterFetch.nStartPos); `h9)`*
output.writeLong(fileSplitterFetch.nEndPos); V<V\0n!0
} J-\?,4mcP
output.close();
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} n`z+ w*
catch(IOException e){e.printStackTrace ();} ^%%5
catch(Exception e){e.printStackTrace ();} >-@ U_p
} CCh8? sM
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//读取保存的下载信息(文件指针位置) m_"p$m;
private void read_nPos() TBKd|D'H
{
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try{ _|
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); -+=:+LhSMb
int nCount = input.readInt(); #H6g&)Z_
nStartPos = new long[nCount]; @fH&(@
nEndPos = new long[nCount]; c\MsVH2|
for(int i=0;i<nStartPos.length;i++) A$%!9Cma
{ CTkN8{2S
nStartPos = input.readLong(); )ozcr^
nEndPos = input.readLong(); )ClMw!ZrU
} 2vkB<[tSs
input.close(); >6I.%!jU
} 3[=`uO0\7
catch(IOException e){e.printStackTrace ();} aR)en{W
catch(Exception e){e.printStackTrace ();} V9E6W*IE
} Lkl|4L
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private void processErrorCode(int nErrorCode) >U~|R=*
{ ?S&w0}R
System.err.println("Error Code : " + nErrorCode); sVZZp
} ljJz#+H2_
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//停止文件下载 x1BOW
public void siteStop() GX@W"y
{ W8,t l>(
bStop = true; J,1osG<6x
for(int i=0;i<nStartPos.length;i++) t+ S~u^
fileSplitterFetch.splitterStop(); Sq-3-w,R~
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} U$A7EFK'
} Q-`{PJ(p
//负责部分文件的抓取 D!RE-w92X
**FileSplitterFetch.java (}C^_q:7d
*/ fNqmTRu
package NetFox; 7SK3
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import java.io.*; TsX+. i'
import java.net.*; <4Q1 2:
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public class FileSplitterFetch extends Thread { -jVaS wt
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String sURL; //File URL Dr6s^}}~n
long nStartPos; //File Snippet Start Position g8,?S6\nMz
long nEndPos; //File Snippet End Position =a9etF%B
int nThreadID; //Thread's ID ~#x:z^U
boolean bDownOver = false; //Downing is over NuD[-;N]
boolean bStop = false; //Stop identical |)-|2cPRur
FileAccessI fileAccessI = null; //File Access interface b4v(k(<
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 1 Itil~
{ Q=(@K4
this.sURL = sURL; o9ctJf=qn
this.nStartPos = nStart; %GX uuE}mX
this.nEndPos = nEnd; R VkU+7
nThreadID = id; ^`rpf\GX(
fileAccessI = new FileAccessI(sName,nStartPos);//定位 "]T$\PJun
} \TbsoWX
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public void run() m
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{ T A\4uy6o
while(nStartPos < nEndPos && !bStop) ou'~{-_xd
{ VT%
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try{ CGC-"A/W
URL url = new URL(sURL); pcy<2UV
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 5{13V*<
httpConnection.setRequestProperty("User-Agent","NetFox"); D0/DI
String sProperty = "bytes="+nStartPos+"-"; dn ZzA
httpConnection.setRequestProperty("RANGE",sProperty); /2;dH]o0
Utility.log(sProperty); ]cm6 |`pz
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InputStream input = httpConnection.getInputStream(); &~~aAg
//logResponseHead(httpConnection); +Qh[sGDdY
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byte[] b = new byte[1024]; 7}4'dW.
int nRead; <nWKR,
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) , 3X: )
{ N]14
nStartPos += fileAccessI.write(b,0,nRead); 9u,8q:I.?
//if(nThreadID == 1) G'f9N^w
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); <4bz/^
} <S1??
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Utility.log("Thread " + nThreadID + " is over!"); {O^TurbTFA
bDownOver = true; mn]-rTr
//nPos = fileAccessI.write (b,0,nRead); t;8\fIW5
} Al7<s
catch(Exception e){e.printStackTrace ();} B.$PhmCG
} [o2w1R\H+x
} "h=6Q+Ze
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//打印回应的头信息 0"EoC
public void logResponseHead(HttpURLConnection con) "S5S|dBc
{ g(aZT#i i=
for(int i=1;;i++) 4YszVT-MU~
{ AR%hf
String header=con.getHeaderFieldKey(i); "8 N"Udu
if(header!=null) TQP+>nS,
//responseHeaders.put(header,httpConnection.getHeaderField(header)); R?cUy8?'S
Utility.log(header+" : "+con.getHeaderField(header)); _!n}P5
else OJAx:&