/* <cv1$
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**SiteFileFetch.java Bh,)5E^m
*/ (VaN\+I:T
package NetFox; $p3Wjf:bH
import java.io.*; wDSUMB<?
import java.net.*; P"h\7V,d%
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public class SiteFileFetch extends Thread { (+LR u1z
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SiteInfoBean siteInfoBean = null; //文件信息Bean lF8dRIav
long[] nStartPos; //开始位置 k!/_/^{
long[] nEndPos; //结束位置 z|]oM#Gt
FileSplitterFetch[] fileSplitterFetch; //子线程对象 S"^KJUUc
long nFileLength; //文件长度 //M4Sq(
boolean bFirst = true; //是否第一次取文件 @'r`(o3z!Z
boolean bStop = false; //停止标志 pR6A#DgB
File tmpFile; //文件下载的临时信息 As'M39*V
DataOutputStream output; //输出到文件的输出流 Flujwh@rg
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) j]B$(pt
public SiteFileFetch(SiteInfoBean bean) throws IOException VuMDV6^Z
{ C6'*/wq
siteInfoBean = bean; $',GkK{NX
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); G#n^@kc*,
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); g<iwxF
if(tmpFile.exists ()) @yn^6cE
{ cCh5Jl@Z
bFirst = false; _%Jl&0%q
read_nPos(); a^XTW7]r
} X&9^&U=e
else $
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{ \2R`q*a+
nStartPos = new long[bean.getNSplitter()]; !qTpQ5Dm
nEndPos = new long[bean.getNSplitter()]; Ho )t=qn
} yp[<9%Fi
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} ^J#?hHz
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public void run() n&0mz1rw
{ #gX%X~w$F
//获得文件长度 6z9R1&~%
//分割文件 <OR.q
//实例FileSplitterFetch 24H^hN9
//启动FileSplitterFetch线程 XlPK3^'N)h
//等待子线程返回 )g9)IF
try{ }[>RxHd
if(bFirst) ~t{D5#LVHa
{ Q$xa
nFileLength = getFileSize(); A~6%,q@^jh
if(nFileLength == -1) 9tzoris[~
{ :LZ-da"QR
System.err.println("File Length is not known!"); Bmx(qE
} -Q<z1vz
else if(nFileLength == -2) o,S!RG&
{ gt
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System.err.println("File is not access!"); qhV,u;\.
} ]>
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else Ci]'G>F@"
{ Y%78>-2L
for(int i=0;i<nStartPos.length;i++) Zz"I.$$[M
{ W<\ kf4Y
nStartPos = (long)(i*(nFileLength/nStartPos.length)); TqS2!/jp
} )ZT6:)
for(int i=0;i<nEndPos.length-1;i++) DNm(:%)0
{ ZhhI@_sz
nEndPos = nStartPos[i+1]; BCBEX&0hk{
} ;\<""Yj@l
nEndPos[nEndPos.length-1] = nFileLength; OZ(Dpx(Q
} SQh+5
} y]yine
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//启动子线程 H"#)&a7
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; AI&qU/}
for(int i=0;i<nStartPos.length;i++) GxYW4b
{ @)o0GHNP
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), "Z;~Y=hC13
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), w?kGi>7E
nStartPos,nEndPos,i); L<bYRGz
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Wu4ot0SZ
fileSplitterFetch.start(); ]kRI}Om2
} :~vxZ*a
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ~V @;(_T
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); <v]z6B@9!
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 7e1dEgn
nEndPos = " + nFileLength); T
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// fileSplitterFetch[nPos.length-1].start(); -7k[Vg?
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//等待子线程结束 G;/Q>V
//int count = 0; w'A tf
//是否结束while循环 <O.Kqk*
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boolean breakWhile = false; N*Yy&[
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while(!bStop) RL6Vkd?
{ G%S6$@:
write_nPos(); PkTfJQP8
Utility.sleep(500); cg,Ua!c
breakWhile = true; ZP-dW|<[x
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for(int i=0;i<nStartPos.length;i++) S`=n&'
{ 6JSY56v
if(!fileSplitterFetch.bDownOver) (VyA6a8
{ b4CF`BG
breakWhile = false; )Ob]T{GY
break; H8&p<=
} \ZMP_UU(
} j9:/RJS
if(breakWhile) 1SUzzlRx
break; X]!D;7^
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//count++; LKx` v90p
//if(count>4) r!kLV )_
// siteStop();
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} oSY7IIf%L
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System.err.println("文件下载结束!"); P`EgA
} 0Gsu
catch(Exception e){e.printStackTrace ();} Jt]&;0zn2
} H@D;e
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//获得文件长度 .*Vkua
public long getFileSize() !^iwQ55e2A
{ `*aBRwvK~
int nFileLength = -1; &s8<6P7
try{ g*y/j]
URL url = new URL(siteInfoBean.getSSiteURL()); K(VW%hV1
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); tuLH}tkNY
httpConnection.setRequestProperty("User-Agent","NetFox"); ARF\fF|<2
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int responseCode=httpConnection.getResponseCode(); c<4F4k7
if(responseCode>=400) l^W uS|G[
{ ]
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processErrorCode(responseCode); mI"D(bx\
return -2; //-2 represent access is error AbfZ++aJ
} =K(JqSw+M
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String sHeader; TSjIz5
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for(int i=1;;i++) +sf .PSz$
{ ]Blf9h7
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); zvO:"w}
//Utility.log(in.readLine()); iZxt/}1X0
sHeader=httpConnection.getHeaderFieldKey(i); 8lP6-VA
if(sHeader!=null) BzN@gQo
{ #U ASH&
if(sHeader.equals("Content-Length")) U~H?4Izl=
{ 66\jV6eH7L
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); cyQBqG
break; Lm6**v
} ->gZ)?Fqy
} <)U4Xz ?
else 3t"4TjAy
break; _<*Hv*Zm
} 6F|j(LB
} `A)"%~
catch(IOException e){e.printStackTrace ();} *Y6xvib9*
catch(Exception e){e.printStackTrace ();}
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Utility.log(nFileLength); [6tSYUZs
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return nFileLength; qCPmbg
} :50b8
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//保存下载信息(文件指针位置) N#ioJ^}n:
private void write_nPos() '@=PGpRF
{ u2iXJmM*
try{ xDLG=A%]z
output = new DataOutputStream(new FileOutputStream(tmpFile)); Vba.uKNjk
output.writeInt(nStartPos.length); !{%&=tIZ
for(int i=0;i<nStartPos.length;i++) I#rubAl
{ e0HfP v_
// output.writeLong(nPos); 'LS z f/w
output.writeLong(fileSplitterFetch.nStartPos); j/!H$0PN
output.writeLong(fileSplitterFetch.nEndPos); y~
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} ]$b2a&r9
output.close(); 3n;K!L%zMT
} #&
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catch(IOException e){e.printStackTrace ();} s60
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catch(Exception e){e.printStackTrace ();} k G0Yh2;#
} |>
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//读取保存的下载信息(文件指针位置) ^Q}eatEn
private void read_nPos() f 2YLk
{ &[[K"aM1
try{ $ &UZy|9
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); &qM[g9
int nCount = input.readInt(); ci9R.U)
nStartPos = new long[nCount]; EcL-V>U#M
nEndPos = new long[nCount]; rNDrp@A>
for(int i=0;i<nStartPos.length;i++) p9eRZVy/
{ U9hS<}<Ki
nStartPos = input.readLong(); k@mVxnC
nEndPos = input.readLong(); eD?3"!c!
} Vr.Y/3N&'
input.close(); ;q>9W,jy
} V@-)\RZm
catch(IOException e){e.printStackTrace ();} f .
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catch(Exception e){e.printStackTrace ();} <If35Z)~
} xg@NQI@7
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private void processErrorCode(int nErrorCode) c3%@Wj:fo
{ !^c@shLN4
System.err.println("Error Code : " + nErrorCode); 8jlLUG:g
} ~nLN`Hd
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//停止文件下载 bpAv1udX-W
public void siteStop() FDzqL;I
{ h&