/* p
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**SiteFileFetch.java ]_$[8#kg
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package NetFox; 5-A\9UC*@
import java.io.*; &nK<:^n
import java.net.*; "gwSJ~:ds
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public class SiteFileFetch extends Thread { 4Po_-4
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SiteInfoBean siteInfoBean = null; //文件信息Bean K<J9~
long[] nStartPos; //开始位置 ~QVH<`sn
long[] nEndPos; //结束位置 F:ELPs4"
FileSplitterFetch[] fileSplitterFetch; //子线程对象 sR8"3b<qA
long nFileLength; //文件长度 #A.@i+Zv
boolean bFirst = true; //是否第一次取文件 ?@8[e9lLD
boolean bStop = false; //停止标志 `y0FY&y=
File tmpFile; //文件下载的临时信息 WF"k[2
DataOutputStream output; //输出到文件的输出流 e';_Y>WQy
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) D)Dr__x
public SiteFileFetch(SiteInfoBean bean) throws IOException 2T`!v
{ y?#
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siteInfoBean = bean; c[e}w+uB
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ']oQ]Yx0
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); g=I})s:CTp
if(tmpFile.exists ()) L0]_X#s>#
{ jh$='G n
bFirst = false; azU"G(6y?+
read_nPos(); -']56o_sQ/
} |K~Nw&rZ]
else S[QrS7
{ I?NyM
nStartPos = new long[bean.getNSplitter()]; (iGTACoF
nEndPos = new long[bean.getNSplitter()]; L rPkxmR
} Wez5N
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} JN6B~ZNf
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public void run() 6zn5UW#q
{ D#z:()VT(
//获得文件长度 GJUL$9
//分割文件 FgI3
//实例FileSplitterFetch jq-_4}w?C
//启动FileSplitterFetch线程 ?hM64jI|
//等待子线程返回 (I}v[W
try{ s(8W_4&'
if(bFirst) Qei"'~1a
{ { "E\Jcjl\
nFileLength = getFileSize(); RGX=)
if(nFileLength == -1) "*H`HRi4T
{ UZ$/Ni
System.err.println("File Length is not known!"); E!AE4B1bd
} c:g'.'/*
else if(nFileLength == -2) Cls%M5MH
{ 07 $o;W@
System.err.println("File is not access!"); '3H_wd
} |)G<,FJQE_
else (tQc
{ vcd\GN*4f
for(int i=0;i<nStartPos.length;i++) {BHO/q3
{ G#1GXFDO{
nStartPos = (long)(i*(nFileLength/nStartPos.length)); PxE3K-S)G
} \|ao`MMaD<
for(int i=0;i<nEndPos.length-1;i++) v.ui!|c
{ b u"!jHPB
nEndPos = nStartPos[i+1]; 0|b>I!_"g
} &VcV$8k
nEndPos[nEndPos.length-1] = nFileLength; ]+$?u&0?w
} W}1
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} bJ;'`sw1
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//启动子线程 2Hv+W-6v
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; yiI1x*^
for(int i=0;i<nStartPos.length;i++) m#F`] {
{ &t-kpA|EG
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ---N9I
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), f
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nStartPos,nEndPos,i); YnP5i#"
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); cs'{5!i]
fileSplitterFetch.start(); wa3}SB
} uM'Jp?
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Hq 188<
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); .GcKa024
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", as_PoCoss
nEndPos = " + nFileLength); C6yuX\
// fileSplitterFetch[nPos.length-1].start(); eR" <33{
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//等待子线程结束 @ry_nKr9
//int count = 0; ]g&TKm
//是否结束while循环 1'\/,Es
boolean breakWhile = false; IaXeRq?<
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while(!bStop) alvrh'51
{ 6K<K
write_nPos(); Tu 7QCr5*
Utility.sleep(500); v}Fr@0%
breakWhile = true; JO<wU
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for(int i=0;i<nStartPos.length;i++) 3%ZOKb"D*
{ *=c1do%F
if(!fileSplitterFetch.bDownOver) RdML3E
{ ;d9QAN&0}
breakWhile = false; baK$L;Xo:
break; # Vha7
} I.k
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} b>N8F^}~O
if(breakWhile) uRr o?m<
break; 4_cqT/
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//count++; IobD3:D8W
//if(count>4) :Zz
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// siteStop(); \K!VNB>h
} xK\d4"
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System.err.println("文件下载结束!"); \} :PLCKT
} 5o8EC"
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catch(Exception e){e.printStackTrace ();} %1$,Vs<RH
} >
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//获得文件长度 [1
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public long getFileSize() 2('HvH]k
{ Hg$lXtn]
int nFileLength = -1; qeZ? 7#Gf
try{ 46&/gehr
URL url = new URL(siteInfoBean.getSSiteURL()); NPe%F+X
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); <HVt
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httpConnection.setRequestProperty("User-Agent","NetFox"); Tyf`j,=
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int responseCode=httpConnection.getResponseCode(); 'u b@]ru|
if(responseCode>=400) $'hEz/
{ :A'y+MnK<
processErrorCode(responseCode); ';=O 0)u
return -2; //-2 represent access is error '(L7;+E
} pD#rnp>WWt
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String sHeader; )f<z%:I+Z
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for(int i=1;;i++) W]5w \
{ *itUWpNhr
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ^RtIh-Z.9
//Utility.log(in.readLine()); b?QoS|<e?
sHeader=httpConnection.getHeaderFieldKey(i); ^qD$z=z-
if(sHeader!=null) |2n4QBH!
{ Y\?"WGL)p
if(sHeader.equals("Content-Length")) >e[i5
{ K}MK<2vU
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); <;Zmjeb+#
break; (rm?jDm
} I75DUJqy]
} &AbNWtCV+G
else *.d)OOpLo
break; \ Et3|Iv
} (S\[Y9
} zsyIV!(
catch(IOException e){e.printStackTrace ();} #KexvP&*
catch(Exception e){e.printStackTrace ();} orMwAV
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Utility.log(nFileLength); X))/ m[_[
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return nFileLength; p xa*'h"b^
} GH:jH]u!V
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//保存下载信息(文件指针位置) MJ
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private void write_nPos() "N bq#w\
{ A1>OY^p3%
try{ 70tH:Z)"
output = new DataOutputStream(new FileOutputStream(tmpFile)); {dMsz
output.writeInt(nStartPos.length);
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for(int i=0;i<nStartPos.length;i++) CxO ob1@
{ dufu|BL|}
// output.writeLong(nPos); Ata:^qI
output.writeLong(fileSplitterFetch.nStartPos); UJ7*j%XQz_
output.writeLong(fileSplitterFetch.nEndPos); %oa-WmWm
} *Y7u'v
output.close(); tm RXgTS
} k],Q9
catch(IOException e){e.printStackTrace ();} rgtT~$S
catch(Exception e){e.printStackTrace ();} =BAW[%1b
} ryUQU^v
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//读取保存的下载信息(文件指针位置) jc[Y}gd,
private void read_nPos() V/
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{ '3DXPR^B6
try{ iYm-tsER;
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); .P%bkD6M
int nCount = input.readInt(); YdC6k?tzS
nStartPos = new long[nCount]; F]]]y5t
nEndPos = new long[nCount]; q" sed]
for(int i=0;i<nStartPos.length;i++) -g Sa_8R
{ %JD,$pPs
nStartPos = input.readLong(); 9YQb&
nEndPos = input.readLong(); ^{;oM^Q'
} Z|j>gq
input.close(); e9 5Lo+:f
} < ?}-$
catch(IOException e){e.printStackTrace ();} &LZn
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catch(Exception e){e.printStackTrace ();} {xB!EQ"
} s.N/2F&*W
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private void processErrorCode(int nErrorCode) .A{tQ1&_
{ QIvVcfM^
System.err.println("Error Code : " + nErrorCode); {e9@-
} JZ*/,|1}EC
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//停止文件下载 L<-_1!wh
public void siteStop() )<;Y-u.UW
{ Eog0TQ+*
bStop = true; )E@.!Ut4o
for(int i=0;i<nStartPos.length;i++) JNYFD8J~
fileSplitterFetch.splitterStop(); z] PSpUd
}mq6]ZrK
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} xU>WEm2
} " H&W}N
//负责部分文件的抓取 \lf;P?M^
**FileSplitterFetch.java #9}D4i.`}
*/ m^f0V2M_
package NetFox; ?o4C;
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import java.io.*; JG!mc7
import java.net.*; Cc' 37~6~P
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public class FileSplitterFetch extends Thread { YYl 4"l
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