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**SiteFileFetch.java # Vz9j
*/ AF5.)Y@.
package NetFox; GKf,1kns
import java.io.*; RR h0G>*
import java.net.*; WE""be8
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public class SiteFileFetch extends Thread { u,i~,M
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SiteInfoBean siteInfoBean = null; //文件信息Bean P,y*H_@k
long[] nStartPos; //开始位置 ^CZ!rOSv
long[] nEndPos; //结束位置 (jYHaTL6Y'
FileSplitterFetch[] fileSplitterFetch; //子线程对象 S;#S3?G
long nFileLength; //文件长度 @,
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boolean bFirst = true; //是否第一次取文件 (`+%K_
boolean bStop = false; //停止标志 II$B"-
File tmpFile; //文件下载的临时信息 #({0HFSC:j
DataOutputStream output; //输出到文件的输出流 ZuIr=`"j
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 8>" vAEf
public SiteFileFetch(SiteInfoBean bean) throws IOException X`kTbIZ|
{ #rSm;'%,
siteInfoBean = bean; QDCu
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 3 @XkO
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ! 6yoD
if(tmpFile.exists ()) 0#}Ed Q
{ x(J|6Ey7!n
bFirst = false; ;=goIsk{Q
read_nPos(); nX(2&<
} >`Xikn(
else oNHbQ&h
{ Ua^#.K
nStartPos = new long[bean.getNSplitter()]; hl`4_`3y
nEndPos = new long[bean.getNSplitter()]; h}PeXnRU
} ]?!#*<t r
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} b77Iw%x7
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public void run() ,CiN@T \&
{ 0XV8B
//获得文件长度 ?wzE+p-
//分割文件 ~,[<R
//实例FileSplitterFetch x6Q,$B
//启动FileSplitterFetch线程 r;}%} /IX
//等待子线程返回 LIfQh
try{ @=CN#D12
if(bFirst) =
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{ }7p`8?
nFileLength = getFileSize(); ;&mefaFlWp
if(nFileLength == -1) _*\:UBZx6
{ Fc{M
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System.err.println("File Length is not known!"); )C^ZzmB
} ) #G5XS+)
else if(nFileLength == -2) chw6_ctR>
{ Wk1o H
System.err.println("File is not access!"); U .?N
} MrXmX[1-
else _P6e%O8C#
{ 3[mVPV
for(int i=0;i<nStartPos.length;i++) %JUD54bBt
{ 5>z`==N)
nStartPos = (long)(i*(nFileLength/nStartPos.length)); 8nzDLFxp_
} OW}ny
for(int i=0;i<nEndPos.length-1;i++) >bQ'*!
{ -/ 5" Py
nEndPos = nStartPos[i+1]; l":\@rm`
} M<h2+0(il
nEndPos[nEndPos.length-1] = nFileLength; fTb&k;'LR<
} z%ZAN-
} "+SnHpNx
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//启动子线程 } a#RX$d&
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ~z;G$jd
for(int i=0;i<nStartPos.length;i++) Zb> UY8
{ SUv(MA&
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), XcN"orAo
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), tf1iRXf8
nStartPos,nEndPos,i); pC=kv ve
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); WC2sRv4]3
fileSplitterFetch.start(); D^]g`V*N
} .|ZO2MCd
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 1 Hw %DJ
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); [2h4%{R&
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", | ]#PF*
nEndPos = " + nFileLength); IIj
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// fileSplitterFetch[nPos.length-1].start(); 6"@`iY
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//等待子线程结束 "d1~(0=6<m
//int count = 0; Cp!bsasj
//是否结束while循环 e`]x?t<U4/
boolean breakWhile = false; k*xMe-
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while(!bStop) Y52f8qQq
{ {|!>
{
write_nPos(); 2%!yV~Z
Utility.sleep(500); r.WQ6h/eZ5
breakWhile = true; Fa]|Y
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for(int i=0;i<nStartPos.length;i++) yLpsK[)}\
{ sVT:1 kI
if(!fileSplitterFetch.bDownOver) qYba%g9RN(
{ x:wv#Wh:l7
breakWhile = false; B EN
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break; Q)mYy
} NW=gi
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} 92F9)S{"
if(breakWhile) (:|g"8mQm
break; QOT|6)Yb
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//count++; \mp2LICQg
//if(count>4) BIQQJLu
// siteStop(); +f){x9
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} NeI#gJ1A
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System.err.println("文件下载结束!"); :OEovk(`
} Vi9Kah+
catch(Exception e){e.printStackTrace ();} xLN$!9t
} ^*g= 65!1
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//获得文件长度 uO^,N**R#
public long getFileSize() \&XtPQ
{ c^F@9{I
int nFileLength = -1; jNbU{Z%r
try{ ?1afW)`a.v
URL url = new URL(siteInfoBean.getSSiteURL()); !(H
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); vV
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httpConnection.setRequestProperty("User-Agent","NetFox"); 8T523VI
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int responseCode=httpConnection.getResponseCode(); s#BSZP
if(responseCode>=400) As>-9p>v
{ X$A[~v
processErrorCode(responseCode); 8"=E0(m
return -2; //-2 represent access is error ?B{,%2+
} yg WwUpY
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String sHeader; # A#,]XP
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for(int i=1;;i++) rds4eUxe
{ +*`>7m<^
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); k*u4N
//Utility.log(in.readLine()); M+l~^E0Wj
sHeader=httpConnection.getHeaderFieldKey(i); 1lLXu
if(sHeader!=null) -IE=?23Do?
{ werTwe2Q
if(sHeader.equals("Content-Length")) E0t%]?1
{ 8+mu'RZ X
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); W.sH
break; /Z1>3=G by
} oAt{#v
} {>h,@
else ],|;
break; f\u5=!kjN
} 9i`MUE1Sh
} !*!i&0QC~R
catch(IOException e){e.printStackTrace ();} fn3DoD+I
catch(Exception e){e.printStackTrace ();} /P[ @o
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Utility.log(nFileLength); BJP^?FUd=,
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return nFileLength; ,<O|#`?"@G
} k vF[d{l
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//保存下载信息(文件指针位置) 1SG^g*mf
private void write_nPos() zbZN-j#
{ g0M/Sv
try{ V8947h|&
output = new DataOutputStream(new FileOutputStream(tmpFile)); i Qa=4'9;
output.writeInt(nStartPos.length); ;mauA#vd
for(int i=0;i<nStartPos.length;i++) c:u2a/Q?
{ y{9<>28
// output.writeLong(nPos); [pzo[0G 'v
output.writeLong(fileSplitterFetch.nStartPos); S{S.H?{F
output.writeLong(fileSplitterFetch.nEndPos); k/m-jm_h
} _zG[b/:p
output.close(); xX~;
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} Gj- *D7X5
catch(IOException e){e.printStackTrace ();} |bX{MF
catch(Exception e){e.printStackTrace ();} F3=iyiz6
} ? oQ_qleuo
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//读取保存的下载信息(文件指针位置) AcIw;
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private void read_nPos() K*aGz8N
{ JQ<9~J
try{ 4mci@1K#^
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); U&OE*dq
int nCount = input.readInt(); `{+aJ0<S
nStartPos = new long[nCount]; >U62vX"
nEndPos = new long[nCount]; X8~gLdv8
for(int i=0;i<nStartPos.length;i++) I,7n-G_'
{ oLc
nStartPos = input.readLong(); FQBAt0
nEndPos = input.readLong(); ~+&Z4CYb
} 4*?JU
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input.close(); 9t"/@CH{
} 0#!Z1:Y
catch(IOException e){e.printStackTrace ();} QN8.FiiD
catch(Exception e){e.printStackTrace ();} ~+anI
} Ixr#zt$T-G
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private void processErrorCode(int nErrorCode) OcZ8:`=%
{ FQO>%=&4
System.err.println("Error Code : " + nErrorCode); 8gXf4A(N
} ~Aoo\fN_U
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//停止文件下载 (k<__W c_t
public void siteStop() (T8dh|
{ X@^"@
bStop = true; N6uKFQL:{
for(int i=0;i<nStartPos.length;i++) 4L/8Hj#g
fileSplitterFetch.splitterStop(); Z:Nm9m
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} i1-wzI
} !--A"
//负责部分文件的抓取 r=:o$e
**FileSplitterFetch.java "dFuQB
*/ zf?U q
package NetFox; a{!
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import java.io.*; ky{-NrK
import java.net.*; DtOL=m]s
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public class FileSplitterFetch extends Thread { "V:E BR
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String sURL; //File URL
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long nStartPos; //File Snippet Start Position mqKr+
long nEndPos; //File Snippet End Position Fa9gr/.F,@
int nThreadID; //Thread's ID |<w
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boolean bDownOver = false; //Downing is over 4<l&cP
boolean bStop = false; //Stop identical p WLFJH}N
FileAccessI fileAccessI = null; //File Access interface /+{1;}AT
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException >
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{ zR6^rq*
this.sURL = sURL; %#-'|~
this.nStartPos = nStart; 6),VN>j
this.nEndPos = nEnd; FX:'38-fk
nThreadID = id; &dvL`
fileAccessI = new FileAccessI(sName,nStartPos);//定位 K0z@gWGE
}
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public void run() [cvtF(,
{ JN<IMH
while(nStartPos < nEndPos && !bStop) "M4gl
{ Ilv
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try{ =d`/BDD
URL url = new URL(sURL); ui4*vjd
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); qFg"!w
httpConnection.setRequestProperty("User-Agent","NetFox"); YDdY'd`*
String sProperty = "bytes="+nStartPos+"-"; g9oYK
httpConnection.setRequestProperty("RANGE",sProperty); TP?HxO_C
Utility.log(sProperty); N
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InputStream input = httpConnection.getInputStream(); t*cVDA&K