/* T!^v^m@>y
**SiteFileFetch.java l701$>>
*/ *,=8x\Shp
package NetFox; 9j5-/
import java.io.*; 3[ xHY@c
import java.net.*; /R>YDout}
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public class SiteFileFetch extends Thread { 8~|v:qk
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SiteInfoBean siteInfoBean = null; //文件信息Bean <KI>:@|Sc
long[] nStartPos; //开始位置 :EH>&vm
long[] nEndPos; //结束位置 us.IdG
FileSplitterFetch[] fileSplitterFetch; //子线程对象 :X}Ie P
long nFileLength; //文件长度 bwJluJ,E
boolean bFirst = true; //是否第一次取文件 0+.<BOcW5
boolean bStop = false; //停止标志 Xc~BHEp
File tmpFile; //文件下载的临时信息 n_wF_K\h
DataOutputStream output; //输出到文件的输出流 7c6-
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ]c]^(C
public SiteFileFetch(SiteInfoBean bean) throws IOException 3/]~#y%2
{ _p^Wc.[~M
siteInfoBean = bean; _!w69>Nj
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 9Q7342
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Zvra > %
if(tmpFile.exists ()) u EERNo&
{ bHXoZix
bFirst = false; w U1[/
read_nPos(); XK;Vu#E*^
} r- Y7wM`TZ
else +k/=L9#e
{ wbg?IvY[
nStartPos = new long[bean.getNSplitter()]; K1&t>2=%
nEndPos = new long[bean.getNSplitter()]; _3#_6>=M
} $)KNp dXh
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} yf4 i!~
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public void run() aEun *V^,
{ ]Z52L`k
//获得文件长度 }VHvC"
//分割文件 ~&"'>C#
//实例FileSplitterFetch H wz$zF+R
//启动FileSplitterFetch线程 bkrl>Im<n
//等待子线程返回 .
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try{ ZoCk]hk
if(bFirst) +6^hp-G7
{ 6 B7F
nFileLength = getFileSize(); mXyg\5
if(nFileLength == -1) q%,y66pFr
{ ~ftR:F|9
System.err.println("File Length is not known!"); ]3Jb$Q@
} C^:{y
else if(nFileLength == -2) ~4xn^.w
{ ,| j\x
System.err.println("File is not access!"); z.OJ1vY7
} k`s_31<
else 0n={Mb
{ 90ov[|MkM
for(int i=0;i<nStartPos.length;i++) kv2 H3O
{ 2Zg%4/u,Zp
nStartPos = (long)(i*(nFileLength/nStartPos.length)); `(6cRT`Wp
} h8;H<Y;yQ
for(int i=0;i<nEndPos.length-1;i++) 7|o}m}yVx
{ %zhSSB=BJ
nEndPos = nStartPos[i+1]; 3T[zieX
} czB),vooz
nEndPos[nEndPos.length-1] = nFileLength; b'vIX<
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} _ D"S
} :8N{;aui
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//启动子线程 ZmJ<FF4
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; OM`Ws5W}f
for(int i=0;i<nStartPos.length;i++)
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{ Dr"PS
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), =Wz)(N
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), A7T(p7pP
nStartPos,nEndPos,i); uC[F'\Y
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 0C6T>E7
fileSplitterFetch.start(); 7y$U$6
} 3 FMYs&0r4
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ^Cj3\G4,
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 9V;A+d,
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", E
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nEndPos = " + nFileLength); E5a7p.
// fileSplitterFetch[nPos.length-1].start(); L[U?{
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//等待子线程结束 l7Wdbx5x0
//int count = 0; M<SV H_
//是否结束while循环 e+?;Dc-SJ\
boolean breakWhile = false; ):n'B` f}z
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while(!bStop) Lzx/9PPYn
{ N9u {)u
write_nPos(); 4E$d"D5]>p
Utility.sleep(500); \{qtdTd
breakWhile = true; +F>erdV
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for(int i=0;i<nStartPos.length;i++) <L2z| %`
{ =dp`4N
if(!fileSplitterFetch.bDownOver) R'oGsaPB2
{ hdqr~9
breakWhile = false; $8Z4jo
break; S7@/dHN
} R_vK^Da
} oq,*@5xV2
if(breakWhile) &gI*[5v
break; vtc%MG1
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//count++; Q@*9|6-
//if(count>4) (^]3l%Ed
// siteStop(); /PG%Y]l0b
} ^KV:.up6
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System.err.println("文件下载结束!"); $F]*B
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} g'EPdE
catch(Exception e){e.printStackTrace ();} di<g"8
} +;bZ(_ohG
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//获得文件长度 []?*}o5&>T
public long getFileSize() /74)c~.W
{ G\(*z4@Gz
int nFileLength = -1; dki3(
try{ V|<'o<h8
URL url = new URL(siteInfoBean.getSSiteURL()); lQ4$d{m`
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Q,};O$h
httpConnection.setRequestProperty("User-Agent","NetFox"); 4Vd[cRh2
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int responseCode=httpConnection.getResponseCode(); V8Z@y&ny
if(responseCode>=400) ZbH_h]1$D
{ j_b/66JyN
processErrorCode(responseCode); Zj0h0Vt
return -2; //-2 represent access is error 7>EMr}f C
} rAD4}A_w
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String sHeader; Ft_g~]kZo
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for(int i=1;;i++) !|cM<}TF,
{ :\%hv>}|
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); B|=S-5pv*
//Utility.log(in.readLine()); Qh]k)]+*|
sHeader=httpConnection.getHeaderFieldKey(i); ]|[mwC4
if(sHeader!=null) 7(H?3)%0
{ SE$l,Z"[*b
if(sHeader.equals("Content-Length")) 6}*4co
{ &0{&4,
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); BT
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break; Hdjp^O!
} V-"#Kf9
} !.O;SG
else %PPkT]~\
break; <irr.O
} s,M]f,T
} 8/~@3-9EK
catch(IOException e){e.printStackTrace ();} eUD 5V
catch(Exception e){e.printStackTrace ();} m`4N1egCt
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Utility.log(nFileLength); J@rBrKC
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return nFileLength; 2N.!#~_2 D
} "M,Hm!j
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//保存下载信息(文件指针位置) ~b[5}_L=>
private void write_nPos() V]Uc@7S/
{ >&T J
try{
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output = new DataOutputStream(new FileOutputStream(tmpFile)); q{!ft9|K\d
output.writeInt(nStartPos.length); 6f+@@=Xc
for(int i=0;i<nStartPos.length;i++) !)`m mr
{ hl,x|.f}4Y
// output.writeLong(nPos); )?(_vrc<
output.writeLong(fileSplitterFetch.nStartPos); |w>d]eA5
output.writeLong(fileSplitterFetch.nEndPos); '1Ex{$Yk
} $`L
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output.close(); _gpf9ad
} v}@Uc-(
catch(IOException e){e.printStackTrace ();} "a<:fEsSE
catch(Exception e){e.printStackTrace ();} C~M,N|m+^
} qI[AsM+
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//读取保存的下载信息(文件指针位置) t*-_MG
private void read_nPos() 5K=>x<
{ #zc$cr
try{ r\q|DZ7
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); i1Y<[s
int nCount = input.readInt(); o%$R`;
nStartPos = new long[nCount]; }RQHsS
nEndPos = new long[nCount]; SOS|3q_`
for(int i=0;i<nStartPos.length;i++) 3X9
{ G(1_P1
nStartPos = input.readLong(); `b_n\pf]
nEndPos = input.readLong(); /K<>OyR?
} iS`ok
input.close(); 6s$h _$[X
} Y*S(uqM
catch(IOException e){e.printStackTrace ();} :S+Bu*OyH
catch(Exception e){e.printStackTrace ();} ^[q/w<_j~
} 1W7ClT_cQ
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private void processErrorCode(int nErrorCode) \WZSY||C|_
{ Zy>y7O(,
System.err.println("Error Code : " + nErrorCode); M2A_T.F=H
} 98CS|NEe
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//停止文件下载 NHhKEx0Gtu
public void siteStop() YIHGXi<"n
{ F*y7 4j,
bStop = true; :]8!G- Z
for(int i=0;i<nStartPos.length;i++) 2HDWlUTNVO
fileSplitterFetch.splitterStop(); yz%o?%@
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} t;t;+M|W
} n9k-OGJ
//负责部分文件的抓取 W}WDj:
**FileSplitterFetch.java ^,Ft7 JAn
*/ UvL=^*tm
package NetFox; rW*[sLl3
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import java.io.*; sTxbh2
import java.net.*; ,fhK
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public class FileSplitterFetch extends Thread { tjcsT>
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String sURL; //File URL H9[0-Ur5
long nStartPos; //File Snippet Start Position w|-m*v
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long nEndPos; //File Snippet End Position 4@Bl 1b[<
int nThreadID; //Thread's ID 12}!oS~_
boolean bDownOver = false; //Downing is over j!IkU}*c
boolean bStop = false; //Stop identical &HqBlRo
FileAccessI fileAccessI = null; //File Access interface f/sLQdK,
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException (:RYd6i
{ L!Gpk)}[i
this.sURL = sURL; nlc$"(eA[H
this.nStartPos = nStart; ^a7a_M
this.nEndPos = nEnd; kXOc)
nThreadID = id; lXutZ<S[
fileAccessI = new FileAccessI(sName,nStartPos);//定位 M'@
} 4!-/m7%eF
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public void run() *d-JAE
{ C-^8;xd
while(nStartPos < nEndPos && !bStop) K!v\r"N
{ jN/snU2\0
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try{ Y"TrF(C
URL url = new URL(sURL); P6`LUyz3
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); bj@f<f`
httpConnection.setRequestProperty("User-Agent","NetFox"); CxrsP.
String sProperty = "bytes="+nStartPos+"-"; )eH?3""
httpConnection.setRequestProperty("RANGE",sProperty); #`%V/ #YK
Utility.log(sProperty); JHJ]BMm
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InputStream input = httpConnection.getInputStream(); ?BU?c:"f
//logResponseHead(httpConnection); !HF<fn
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byte[] b = new byte[1024]; r<