/* j0L%jz
**SiteFileFetch.java < dE7+w
*/ %1{S{FB
package NetFox; vu.ug$T
import java.io.*; 9BakxmAc
import java.net.*; @g[ijs\
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public class SiteFileFetch extends Thread { O.dZ3!!+
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SiteInfoBean siteInfoBean = null; //文件信息Bean w_U#z(W3l
long[] nStartPos; //开始位置 8;qOsV)UDT
long[] nEndPos; //结束位置 ^X#)'\T
FileSplitterFetch[] fileSplitterFetch; //子线程对象 eV_",W
long nFileLength; //文件长度 0Y0z7A:
boolean bFirst = true; //是否第一次取文件 D Z~036
boolean bStop = false; //停止标志 ]fY:+Ru
File tmpFile; //文件下载的临时信息 x<t?Yc9
DataOutputStream output; //输出到文件的输出流 F4=X(P_6
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) M7qg\1L
public SiteFileFetch(SiteInfoBean bean) throws IOException 6Lq8#{/]u
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siteInfoBean = bean; {U9{*e$=
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); [Qr_0O
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); =8vwaJ
if(tmpFile.exists ()) ]Y,V)41gCE
{ +v%+E{F$+
bFirst = false; h9d*N 9!;M
read_nPos(); &xr (Kb
} ]@_|A, ]
else Z2;~{$&M+
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nStartPos = new long[bean.getNSplitter()]; f3;[ZS
nEndPos = new long[bean.getNSplitter()]; 5> 81Vhc,
} M3eSj`c3
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} ,jnaa (n
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public void run() U4"&T,'lTL
{ $LBgBH&z
//获得文件长度 s4Jy96<
//分割文件 a/CY@V-
//实例FileSplitterFetch [+@T"2h2b
//启动FileSplitterFetch线程 [:izej(\
//等待子线程返回 F.Bij8\
try{ A'uubFRL2[
if(bFirst) O*F= xG
{ Y|#<kS
nFileLength = getFileSize(); OgK' ~j
if(nFileLength == -1) }Oe4wEYN)
{ HKC&grp
System.err.println("File Length is not known!"); m8l!+8
} -Zg.o$
else if(nFileLength == -2) }_}LaEYAo
{ yJw.z#bB#
System.err.println("File is not access!"); 6m:$RW
} B90fUK2g
else F)aF.'$-/
{
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for(int i=0;i<nStartPos.length;i++) 6/0bis
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{ ihct~y-9W
nStartPos = (long)(i*(nFileLength/nStartPos.length)); F$s:\N
} ]P_yN:~
for(int i=0;i<nEndPos.length-1;i++) =Q# (2
{ n"I{aJ]K
nEndPos = nStartPos[i+1]; r0<zy_d'
} /BS yanro
nEndPos[nEndPos.length-1] = nFileLength; a0k/R<4
} dA#'HMh@
} z
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//启动子线程 4`sW_
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fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; U]M5&R=?
for(int i=0;i<nStartPos.length;i++) UD&pL'{s
{ usU6,
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ;|,*zD
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), K7,Sr1O `
nStartPos,nEndPos,i); _Q*,~ z~
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); EO/TuKt
fileSplitterFetch.start(); {P ==6/<2o
} [KEw5-=i@
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), &<(&u`S
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 0<Rq
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", =>e>
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nEndPos = " + nFileLength); =)!~t/
// fileSplitterFetch[nPos.length-1].start(); m&--$sr
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//等待子线程结束 ^HWa owy=
//int count = 0; nKch:g
//是否结束while循环 Upc_"mkI.
boolean breakWhile = false; Xz'o<S
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while(!bStop) M?qvI
{ nYTPcT4x|
write_nPos(); ,UxAHCR~9
Utility.sleep(500); !dwa. lZ&X
breakWhile = true; u"U7aYGkY
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for(int i=0;i<nStartPos.length;i++) 'On%p|s)H
{ XrGP]k6.^
if(!fileSplitterFetch.bDownOver) I$ ?.9&.&
{ &Y2Dft_K
breakWhile = false; tf>"fU\P
break; -=2V4WU~
} TV?MB(mN
} ]9}^}U1."
if(breakWhile) qy/t<2'
break; 1-sG`%
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//count++; /PE L[Os
//if(count>4) Oh,]"(+
// siteStop(); Cq}E5M
} q!YAA\'31
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System.err.println("文件下载结束!"); /1b7f'
} `r&]Ydu:
catch(Exception e){e.printStackTrace ();} h*\u0yD)
} pL2{zW`FDh
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//获得文件长度 c-ql
public long getFileSize() |u+!CR
{ /z: mi
int nFileLength = -1; dQy K4T
try{ ipS:)4QFxJ
URL url = new URL(siteInfoBean.getSSiteURL()); V+t's*9o3
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); m"wP]OQH*+
httpConnection.setRequestProperty("User-Agent","NetFox"); N t\ZM
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int responseCode=httpConnection.getResponseCode(); o_03Io
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if(responseCode>=400) Y}
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{ S1U[{R?,
processErrorCode(responseCode); BO.Db``
return -2; //-2 represent access is error \} _,g
} ~7m+N)5
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String sHeader; gj
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for(int i=1;;i++) L+}<gQJ(
{ P~%+KxwZQ
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); b7B|$T,
//Utility.log(in.readLine());
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sHeader=httpConnection.getHeaderFieldKey(i); U>DCra;
if(sHeader!=null) kT:I.,N
{ tHK>w%|\R
if(sHeader.equals("Content-Length")) zjOOEvi
{ B<0Kl.V
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); h`iOs>
break; mhB2l/
} -+0kay%
} wxYGr`f
else opMnLor
break; `evF?t11X
} 5lM2nhlf'b
} 'u~0rMe4})
catch(IOException e){e.printStackTrace ();} W#=,FZT
catch(Exception e){e.printStackTrace ();} hCS}
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Utility.log(nFileLength); ESYF4-d+
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return nFileLength; 2t
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} e.~11bx
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//保存下载信息(文件指针位置) Eku9u
private void write_nPos() G? XS-oSv
{ -$DfnAh
try{ Ri~$hs!
output = new DataOutputStream(new FileOutputStream(tmpFile)); B(k tIy
output.writeInt(nStartPos.length); *UJ4\
for(int i=0;i<nStartPos.length;i++) gKQV99
{
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// output.writeLong(nPos); /;Hr{f jl{
output.writeLong(fileSplitterFetch.nStartPos); {/H<_
output.writeLong(fileSplitterFetch.nEndPos); O1S7t)ag
} >7zC-3
output.close(); ^
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} F"UI=7:o
catch(IOException e){e.printStackTrace ();} JO+tY[q
catch(Exception e){e.printStackTrace ();} x7U=1y(
} 8-B7_GoJ+B
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//读取保存的下载信息(文件指针位置) ir/uHN@
private void read_nPos() N+@ Ff3M
{ yCvtglAJ4
try{ cw{TS
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); `Y5LAt:
int nCount = input.readInt(); KE@+I.x
nStartPos = new long[nCount]; {
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nEndPos = new long[nCount]; eqsmv[
for(int i=0;i<nStartPos.length;i++) 7XK0vKmW3
{ 66,(yxg
nStartPos = input.readLong(); nqm=snh
nEndPos = input.readLong(); 4P k%+l
} 2Y23!hw
input.close(); bo/9k 4N3
} HyVV,q^E
catch(IOException e){e.printStackTrace ();} <Q\KS
catch(Exception e){e.printStackTrace ();} %DYh<U4N
} +tT"
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private void processErrorCode(int nErrorCode) wW1VOj=6V"
{ n@RmH>"
System.err.println("Error Code : " + nErrorCode); ={sjoMW
} CTRUr"
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//停止文件下载 EXCE^Vw
public void siteStop() $|- Lw!)D
{ mi7?t/D1Z
bStop = true; *VsVCUCz5*
for(int i=0;i<nStartPos.length;i++) kt2_WW[
fileSplitterFetch.splitterStop(); fq6Obh=A#
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} S
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} S3ooG1 4Ls
//负责部分文件的抓取 Op ar+|p\
**FileSplitterFetch.java cZNcplt8
*/ E=ijt3
package NetFox; $lJcC |*
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import java.io.*; !HDb{f
import java.net.*; 0w3c8s.
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