/* 0\QYf0o
**SiteFileFetch.java ]C+eJ0"A
*/ E#8J+7
package NetFox; .!!79 6hS
import java.io.*; q^u6f?B
import java.net.*; -.^@9
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public class SiteFileFetch extends Thread { 'wegipK~R
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SiteInfoBean siteInfoBean = null; //文件信息Bean KhLg*EL
long[] nStartPos; //开始位置 Mi_[9ku>%
long[] nEndPos; //结束位置 9#s,K! !3{
FileSplitterFetch[] fileSplitterFetch; //子线程对象 nz}]C04:-
long nFileLength; //文件长度 J: L -15
boolean bFirst = true; //是否第一次取文件 5X0_+DdeL
boolean bStop = false; //停止标志 u2f `|+1^y
File tmpFile; //文件下载的临时信息 4p*?7g_WVH
DataOutputStream output; //输出到文件的输出流 32TP Mk
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) BW+qp3 k\
public SiteFileFetch(SiteInfoBean bean) throws IOException p.qrf7N$
{ 9 J$Y,Z
siteInfoBean = bean; &f$a1#O}dx
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); lF)0aDk'h
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ojiM2QT}m
if(tmpFile.exists ()) YNuewD
{ 1VRqz5
bFirst = false; [B.W1 GL!
read_nPos(); pq%t@j(X
} wEZqkV
else p!. /
{ F%w\D9+P
nStartPos = new long[bean.getNSplitter()]; E
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nEndPos = new long[bean.getNSplitter()]; &;'w8_K"^
} W,0KBkkp
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} hnH)Jy;>
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public void run() 4Sd+"3M
{ 1Kp?bwh"u
//获得文件长度 0V{>)w!Fo
//分割文件 TG""eC!E
//实例FileSplitterFetch >\N$>"~a
//启动FileSplitterFetch线程 wY."Lw> 6
//等待子线程返回 Ubn
try{ @G^j8Nl+J}
if(bFirst) :YkDn~@
{ M'pY-/.
nFileLength = getFileSize(); 7{?lEQ&UE
if(nFileLength == -1) BBaHMsr
{ 54, Ju'r
System.err.println("File Length is not known!"); BA`kxL/x
} }W^V^i )
else if(nFileLength == -2) 0Og/47dO.2
{ 3JwSgc b
System.err.println("File is not access!"); t[L2'J.5
} s?1-$|*
else iPRJA{$b_
{ U"jUMOMZ;
for(int i=0;i<nStartPos.length;i++) <m|FccvQ
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); krnvFZRTQ
} N^nDWK
for(int i=0;i<nEndPos.length-1;i++) EBN]>zz
{ C.B8 J"T-
nEndPos = nStartPos[i+1]; ;jpw"-J`
} zIX}[l4EW~
nEndPos[nEndPos.length-1] = nFileLength; 8'
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} |V*e2w
} )wyu+_:
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//启动子线程 [kU[}FT
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; gwkZk-f\p
for(int i=0;i<nStartPos.length;i++) uWM4O@Qn)d
{ g[uE@Gaj&
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), x_>"Rnv:K
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), see'!CjVo2
nStartPos,nEndPos,i); "N=&4<]I5
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); R[2[[M
fileSplitterFetch.start(); 'Gm!Jblo@
} K~9 jin
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), am)J'i,
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); j$JV(fz
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", G5X|JTzpu<
nEndPos = " + nFileLength); g/J^K*3]
// fileSplitterFetch[nPos.length-1].start(); <3J=;.\6
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//等待子线程结束 "X!_37kQ
//int count = 0; -&HoR!af
//是否结束while循环 ~h~r]tV*+
boolean breakWhile = false; ZFd{q)qe
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while(!bStop) +eH=;8
{ (\AszLW
write_nPos(); iIC9rso"Q1
Utility.sleep(500); U iPVZ@?
breakWhile = true; f/|a?n2\hm
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for(int i=0;i<nStartPos.length;i++) rkER`
{ jw6 ng>9
if(!fileSplitterFetch.bDownOver) j2C^1:s@m
{ ^{:[^$f:l
breakWhile = false; aNh1e^j
break; <jg
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} jAK`96+D~b
} \)s 3]/"7
if(breakWhile) r]K0
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break; 0v,`P4_k
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//count++; ]mDsUZf<
//if(count>4) #|2g{7g*
// siteStop(); qoyGs}/I8
} 4$#ia
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System.err.println("文件下载结束!"); d#$i/&gE
} FCw
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catch(Exception e){e.printStackTrace ();} 2* cKFv{
} FnU{C= P
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//获得文件长度 ,L;c{[*rh
public long getFileSize() N'W>pU
{ Ij,?G*
int nFileLength = -1; 9dhFQWz"
try{ YfYL?G
URL url = new URL(siteInfoBean.getSSiteURL()); u8)r
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ;z=C^'
httpConnection.setRequestProperty("User-Agent","NetFox"); :8/M6-EK
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int responseCode=httpConnection.getResponseCode(); Z6HkQ=A64
if(responseCode>=400) . KSr@Gz
{ _jI)!rfb
processErrorCode(responseCode); x[h<3V"
return -2; //-2 represent access is error S7~l%G>]b
} nD{;4$xP`
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String sHeader; d%|#m)
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for(int i=1;;i++) c^/?VmCQ}
{ ?.'oxW
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); rD)v%vvr&`
//Utility.log(in.readLine()); ?VHwYD.B
sHeader=httpConnection.getHeaderFieldKey(i); 5v03<m0`y
if(sHeader!=null) AhFI, x
{ B7^n30+L
if(sHeader.equals("Content-Length")) h4xf%vA(;
{ %EhU!K#[
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ^bgm0,M
break; ROiX=i
} !wufoK
} "VOWV3Z
else ;$&5I9N
break; 2SCf]&
} {?M*ZRO'
} '/)_{Ly
catch(IOException e){e.printStackTrace ();} +,w|&y
catch(Exception e){e.printStackTrace ();} iZqFVr&JF
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Utility.log(nFileLength); loVvr"&g
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return nFileLength; ,lG wW8$R
} ?;kc%Rz
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//保存下载信息(文件指针位置) ~5?n&pF
private void write_nPos() D&lXi~Z%.
{ ,Onm!LI=
try{ lfG&V +S1
output = new DataOutputStream(new FileOutputStream(tmpFile)); gKH"f%lK
output.writeInt(nStartPos.length); GHrT?zEX
for(int i=0;i<nStartPos.length;i++) ,oVBgCf
{ S:T>oFUot
// output.writeLong(nPos); n`2"(7Wj
output.writeLong(fileSplitterFetch.nStartPos); 5/VB'N#7s
output.writeLong(fileSplitterFetch.nEndPos); `v+O5
} {Q3#]Vu
output.close(); 5m;wMW<
} zEL[%(fnc
catch(IOException e){e.printStackTrace ();} ?ew]i'9(
catch(Exception e){e.printStackTrace ();} N=Yi:+
} ^bw~$*"j#
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//读取保存的下载信息(文件指针位置) ^ x#RUv
private void read_nPos() KTREOOu .t
{ ^mb*w)-p?
try{ JO$]t|I
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); |?Uc:VFF
int nCount = input.readInt(); #j5^/*XW
nStartPos = new long[nCount]; 5?Ao9Q]@
nEndPos = new long[nCount]; AxQ/
for(int i=0;i<nStartPos.length;i++) yodrX&"
{ q\=[v
nStartPos = input.readLong(); 5~6y.S
nEndPos = input.readLong(); 9Qd'=JQl
} *qOCo_=P8
input.close(); ;a77YLTQ
} &3/H
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catch(IOException e){e.printStackTrace ();} jWCC`0
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catch(Exception e){e.printStackTrace ();} <qiap2
} enepAu-="p
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