/* |Hfl&3
**SiteFileFetch.java q4)Ey
*/ $}db /hY*
package NetFox; 9T$u+GX'
import java.io.*; Jns/v6
import java.net.*; ]Ym=+lgi
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public class SiteFileFetch extends Thread { X CzXS.
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SiteInfoBean siteInfoBean = null; //文件信息Bean y[7C% Wj
long[] nStartPos; //开始位置 /,X7.t_-
long[] nEndPos; //结束位置 9l#gMFknI
FileSplitterFetch[] fileSplitterFetch; //子线程对象 IYLZ
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long nFileLength; //文件长度 $.9 +{mz
boolean bFirst = true; //是否第一次取文件 '<W<B!HP5Z
boolean bStop = false; //停止标志 !x8kB
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File tmpFile; //文件下载的临时信息 bfhz?,b
DataOutputStream output; //输出到文件的输出流 x df?nt
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) "ct58Y@
public SiteFileFetch(SiteInfoBean bean) throws IOException pUGN!3
{ t?HF-zQ
siteInfoBean = bean; # v+;:
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); hox< vr4
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); j-QGOuvW
if(tmpFile.exists ()) lM$t!2pRB
{ u(AA`S"
bFirst = false;
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read_nPos(); D&-vq,c
} wh*:\_!0\
else ZL,6_L/
{ bf(+ldq
nStartPos = new long[bean.getNSplitter()]; R1Yqz $#
nEndPos = new long[bean.getNSplitter()]; 94y9W#
} V,m3-=q
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} %XR<isn
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public void run() WU7cF81$
{ JL``iA
//获得文件长度 c@9##DPn
//分割文件 &y\igX1
//实例FileSplitterFetch (Igu:=
//启动FileSplitterFetch线程 L0xsazX:x
//等待子线程返回 9OfU7_m
try{ K'V 2FTJI
if(bFirst) cl_TF[n?
{ a MsJO*;>
nFileLength = getFileSize(); x%pRDytA
if(nFileLength == -1) S2Vx e@b)
{ 6uqUiRs()
System.err.println("File Length is not known!"); HD H
} lCHo+>\Z
else if(nFileLength == -2) ?aFZOc4
{ 5aG5BA[N
System.err.println("File is not access!"); (2tH"I
} LZa%
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else xj7vI&u.
{ n$xszuNJ`
for(int i=0;i<nStartPos.length;i++) MOeoU1Hn
{ ZJvo9!DL|
nStartPos = (long)(i*(nFileLength/nStartPos.length)); h1*FPsc
} 5VZjDg?
for(int i=0;i<nEndPos.length-1;i++) 7DZTQUb"
{ nd.hHQ
nEndPos = nStartPos[i+1]; 7 OWsHlU
} #
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nEndPos[nEndPos.length-1] = nFileLength; ,_bp)-O G
} xh r[A
} }#bZ8tm&
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//启动子线程 &oEyixe
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; fbV@= (y?
for(int i=0;i<nStartPos.length;i++) ]'g:B p
{ @k9Pz<ub
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 7f
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 0MrN:M2B
nStartPos,nEndPos,i); (0}j]p'w
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); #D0 ~{H
fileSplitterFetch.start(); `O
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} G1[(F`t>
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), B!uxs
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); He<;4?:
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", +q-c8z
nEndPos = " + nFileLength); ]!faA\1
// fileSplitterFetch[nPos.length-1].start(); LQ>$>A(
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//等待子线程结束 .
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//int count = 0; ,cD1{T\
//是否结束while循环 5k~\or 5_
boolean breakWhile = false; m9!DOL1pl
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while(!bStop) N<n8'XDdG
{ 4 4`WYK l
write_nPos(); |]tZ hI"3<
Utility.sleep(500); &F`L}#oL&
breakWhile = true; y!5:dvt
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for(int i=0;i<nStartPos.length;i++) uY]T:UVk
{ ]5)"gL%H`
if(!fileSplitterFetch.bDownOver) .<.#aY;N
{ lRH0)5`
breakWhile = false; Bq{]Eh0%
break; [4\aYB 9N
} u>}zm_
} t)'dF*L
if(breakWhile) nALnB1
break; 7UDq/:}Fo
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//count++; OfJd/D
//if(count>4) jzMg'z/@J
// siteStop(); v#F-<?Vv
} 3a^)u-9,x
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System.err.println("文件下载结束!"); x=vK
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} BUDGyl/=
catch(Exception e){e.printStackTrace ();} X|Dpt2A=
} 0e\y~#-
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//获得文件长度 QoWR@u6a
public long getFileSize() Y$+QNi
{ )ji@k(x27q
int nFileLength = -1; 6Hl<,(vn
try{ o?y"]RCM
URL url = new URL(siteInfoBean.getSSiteURL()); :~erh}~ps
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); gCL{Cw
httpConnection.setRequestProperty("User-Agent","NetFox"); <r3Jf}%tT
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int responseCode=httpConnection.getResponseCode(); 69iM0X!'u
if(responseCode>=400) ,(;5%+#n
{ fB7ljg
processErrorCode(responseCode); YuA7r"c
return -2; //-2 represent access is error ^}@`!ON
} ])=H
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String sHeader; ]zcV]Qj$~
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for(int i=1;;i++) Pa[?L:E
{ !-ZP*V3}h
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 1@@y]s_.a
//Utility.log(in.readLine()); zWtj|%ts
sHeader=httpConnection.getHeaderFieldKey(i); 9cz )f\
if(sHeader!=null) zuMO1s
{ @.1Qs`pt
if(sHeader.equals("Content-Length")) >]-<uT_
{ p7$3`t6u
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); )tvc/)&A}
break; _0m}z%rI
} F^]aC98]1
} !?6.!2
else qsTq*G
break; "vsjen.K>
} V(DjF=8
} F^xaz^=`u
catch(IOException e){e.printStackTrace ();} R}hlDJ/m-
catch(Exception e){e.printStackTrace ();} 0JyqCbl
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Utility.log(nFileLength); r_q~'r35 _
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return nFileLength; Bd8hJA
} nSS}%&a:LX
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//保存下载信息(文件指针位置) C[g&F0 6
private void write_nPos() soDfi-2o3
{ Yx!n*+ :J
try{ s<,"Hsh^CR
output = new DataOutputStream(new FileOutputStream(tmpFile)); QU,?}w'?d
output.writeInt(nStartPos.length); %uW<
for(int i=0;i<nStartPos.length;i++) =/m}rcDN
{ PYaOH_X.
// output.writeLong(nPos); }^Z< dbt
output.writeLong(fileSplitterFetch.nStartPos); t:disL&!E
output.writeLong(fileSplitterFetch.nEndPos); 6kC)\uy
} `u$24h'!
output.close();
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} f)WPOTEY
catch(IOException e){e.printStackTrace ();} kHZKj!!R
catch(Exception e){e.printStackTrace ();} so'eZ"A:
} aC4m{F[
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//读取保存的下载信息(文件指针位置) hl}dgp((
private void read_nPos()
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{ x7Eeb!s0f,
try{ noFh p
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); WVj&0
int nCount = input.readInt(); ^T=5zqRD
nStartPos = new long[nCount]; bnIf}ut-G
nEndPos = new long[nCount]; ,I=O"z>9
for(int i=0;i<nStartPos.length;i++) oUCVd}wH
{ :%pw`b, =V
nStartPos = input.readLong(); [&fWF~D-p<
nEndPos = input.readLong(); =g1 D;
} 1/!nV
input.close(); Qve`k<Cj"
} K:C+/O
catch(IOException e){e.printStackTrace ();} b\H/-7<
catch(Exception e){e.printStackTrace ();} /oB K&r[(
} H_v/}DEG
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private void processErrorCode(int nErrorCode) ;wfH^2HxE)
{ :LG}yq^
System.err.println("Error Code : " + nErrorCode); YK7gd|LR]
} Ed4_<:
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//停止文件下载 A-}PpH~.Z
public void siteStop() +ESX.Vel
{ CRP7U
bStop = true; [@jp9D
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for(int i=0;i<nStartPos.length;i++) i_'|:Uy*F
fileSplitterFetch.splitterStop(); !N@Yh"c
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} X+fuhcn
} K%o6hBlk_
//负责部分文件的抓取 T
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**FileSplitterFetch.java @DRfNJ}
*/ \3,$YlG
package NetFox; % jYQ
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import java.io.*; Z1E`I89<
import java.net.*; Q3'(f9
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public class FileSplitterFetch extends Thread { o%y+Y;|?J
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String sURL; //File URL ;))[P_$zB
long nStartPos; //File Snippet Start Position
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long nEndPos; //File Snippet End Position h'z+8X_t
int nThreadID; //Thread's ID OLhWkN,qA
boolean bDownOver = false; //Downing is over v)X[gt
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boolean bStop = false; //Stop identical +-xSuR,
FileAccessI fileAccessI = null; //File Access interface '` BjRg57]
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException `Pz!SJ|
{ 5pN08+
this.sURL = sURL; Off: ~
this.nStartPos = nStart; E1mI Xd;.
this.nEndPos = nEnd; A=\'r<:
nThreadID = id;
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fileAccessI = new FileAccessI(sName,nStartPos);//定位 p0%6@_FT~
} 4DG 9`5.
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public void run() sYW1T @
{ 4okHAv8;
while(nStartPos < nEndPos && !bStop) LrmtPnL
{ dT*f-W
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try{ |TNiKy
URL url = new URL(sURL); &Nj:XX;X
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Gx~"iM
httpConnection.setRequestProperty("User-Agent","NetFox"); Cv?<}q
String sProperty = "bytes="+nStartPos+"-"; +qu@dU0\`|
httpConnection.setRequestProperty("RANGE",sProperty); x _YV{
Utility.log(sProperty); 9/8@
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InputStream input = httpConnection.getInputStream(); W? 6
//logResponseHead(httpConnection); @5dBb+0J
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byte[] b = new byte[1024]; <*b]JY V@
int nRead; iPtm@f,bI
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) CU7iva
{ j|VlHDqR
nStartPos += fileAccessI.write(b,0,nRead); eX]9mQ]E
//if(nThreadID == 1) ,&O:/|c E
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); T^-H_|/M
} ,i$(yx?
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Utility.log("Thread " + nThreadID + " is over!"); Sf.8Ibw
bDownOver = true; T{ v<