/*
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**SiteFileFetch.java 4?'vP '
*/ WYUDD_m
package NetFox; mOsp~|d
import java.io.*; =Nxkr0])!
import java.net.*; gVOAB-nw
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public class SiteFileFetch extends Thread { 0+* NHiH
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SiteInfoBean siteInfoBean = null; //文件信息Bean 7~mhWPzMwB
long[] nStartPos; //开始位置 7#0buXBg
long[] nEndPos; //结束位置 sI!H=bp-8
FileSplitterFetch[] fileSplitterFetch; //子线程对象 U\Wo&giP[
long nFileLength; //文件长度 tbd=A]B-
boolean bFirst = true; //是否第一次取文件 l[38cF
boolean bStop = false; //停止标志 @i1e0;\
File tmpFile; //文件下载的临时信息 "%gsGtS
DataOutputStream output; //输出到文件的输出流 eyCZ[SC
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类)
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public SiteFileFetch(SiteInfoBean bean) throws IOException ##7y|AwK
{ GkIY2PD
siteInfoBean = bean; =1l6(pJ
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); rG-T Dm
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); bP&QFc
if(tmpFile.exists ()) ixdsz\<
{ %L+q:naZe
bFirst = false; L=4+rshl!_
read_nPos(); !mmMAsd,
} (90/,@66l
else _fHml
{ b|d-vnYE
nStartPos = new long[bean.getNSplitter()]; 52e>f5m.
nEndPos = new long[bean.getNSplitter()]; I+8n;I)]X
} FmL]|~
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} 7MKX`S
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public void run() ? nd:
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{ kOYUxr.b
//获得文件长度 w7V\_^&Id
//分割文件 7Q}pKq]P
//实例FileSplitterFetch M3pE$KT0x
//启动FileSplitterFetch线程 %c }V/v_h
//等待子线程返回 pjWRd_h.
try{ %=`JWLLG
if(bFirst) kJWg},-\
{ Hc)z:x;Sj
nFileLength = getFileSize(); {{?g%mQ6
if(nFileLength == -1)
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{ HC%Hbc~S_Q
System.err.println("File Length is not known!"); !GqFX+!Ju
} i}) s4%a
else if(nFileLength == -2) &|/_"*uM
{ L8VOiK=,
System.err.println("File is not access!"); ;o_F<68QP
} v`HER6
else nI\6aG?`
{ Y}:~6`-jj
for(int i=0;i<nStartPos.length;i++) uzy5rA==
{ 9P?0D
nStartPos = (long)(i*(nFileLength/nStartPos.length)); #Iw(+%D
} $Habhw
for(int i=0;i<nEndPos.length-1;i++) jx: IK
{ w&p+mJL.
nEndPos = nStartPos[i+1]; 3
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} CL=%eSsuD
nEndPos[nEndPos.length-1] = nFileLength; C0wtMD:G
} [n2B6Px
} #S}orWj
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//启动子线程 EuK}L[Kl
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; b3ohTmy4(
for(int i=0;i<nStartPos.length;i++) YV
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{ j9p6rD
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), #De>EQ%
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), x[(6V'
nStartPos,nEndPos,i); ?b
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); PsC")JS
fileSplitterFetch.start(); T8XrmR&?PX
} C= ~c`V5>r
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), tn]nl!_@
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); U'fP
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", {q-&!l|
nEndPos = " + nFileLength); J2bvHxb Rd
// fileSplitterFetch[nPos.length-1].start(); j#l=%H
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//等待子线程结束 nf.Ox.kM)
//int count = 0; -@pjEI
//是否结束while循环 VW-qQe
boolean breakWhile = false; )PX VR
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while(!bStop) <J/ =$u/
{ d54iZ`
write_nPos(); 5 ~Wg=u<6
Utility.sleep(500); ov6xa*'a
breakWhile = true; ul~ux$a
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for(int i=0;i<nStartPos.length;i++) g6GkA.!X$
{ WR;1
if(!fileSplitterFetch.bDownOver) !nv wRQ
{ L5&M@YTH
breakWhile = false; 1-2hh)
break; n(:<pz
} Q+:y
} ]; w 2YR
if(breakWhile) P`Np+E#I
break; LgqQr6y"
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//count++; V=O52?8
//if(count>4) zF1!a
// siteStop(); Abc{<4 z0?
} [9m3@Yd'
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System.err.println("文件下载结束!"); ^HKXm#vAB
} oaIk1U;g
catch(Exception e){e.printStackTrace ();} ~k"+5bHa*
} d:=' Xs
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//获得文件长度 HIg2y
public long getFileSize() '7iz5wC#
{ kSAVFzUS
int nFileLength = -1; T5XXC1+
try{ UP~28%>X
URL url = new URL(siteInfoBean.getSSiteURL()); `m,4#P-kj
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); [!'+}
httpConnection.setRequestProperty("User-Agent","NetFox"); 6Yu:v
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int responseCode=httpConnection.getResponseCode(); +|A`~\@N
if(responseCode>=400) P}R:o
{ -ng1RA>
processErrorCode(responseCode); mRk)5{
return -2; //-2 represent access is error ':*H#}Br-#
} i8]EIXbMX
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String sHeader; 6= iHw24
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for(int i=1;;i++) mZ)>^.N6
{ p3s i\Fm!
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); c%H' jB[
//Utility.log(in.readLine()); #<{v~sVp&
sHeader=httpConnection.getHeaderFieldKey(i); MIMC(<
if(sHeader!=null) X/5m}-6d]
{ X\^nV
if(sHeader.equals("Content-Length")) [doEArwn
{ )Z7Vm2a
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); X\^V{v^-
break; 2]!@)fio`
} xS*UY.>
} HsY5wC
else -3K h
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break; w~lH2U'k}
} XwH>F7HPe
} dC=[o\
catch(IOException e){e.printStackTrace ();} 4G&`&fff]
catch(Exception e){e.printStackTrace ();} \Kl20?
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Utility.log(nFileLength); /jv/qk3i
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return nFileLength; rXx#<7`
} ,\4]uZ<
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//保存下载信息(文件指针位置) e~)[I! n
private void write_nPos() 8^7Oc,:~
{ I)rnF
try{ qng ~,m
output = new DataOutputStream(new FileOutputStream(tmpFile)); y`I>|5[`
output.writeInt(nStartPos.length); ImXYI7PL
for(int i=0;i<nStartPos.length;i++) \&"C
{ \xYVnjG,
// output.writeLong(nPos); 4Aj~mA
output.writeLong(fileSplitterFetch.nStartPos); dNACE*g;q
output.writeLong(fileSplitterFetch.nEndPos); lF}[ YL
} >pq~ &)^u
output.close(); @16GF!.
} p9v:T1?
catch(IOException e){e.printStackTrace ();} $xO8?
catch(Exception e){e.printStackTrace ();} 8Qv s\TY
} `v*HH}aDO
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//读取保存的下载信息(文件指针位置) $n<a`PdH
private void read_nPos() h"FI]jK|}
{ @MSmg3&
try{ lQ8hY$
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); F#Lo^ 8
int nCount = input.readInt(); br I;}m
nStartPos = new long[nCount]; 80lei
nEndPos = new long[nCount]; '*J+mZt N
for(int i=0;i<nStartPos.length;i++) ]!/
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nStartPos = input.readLong(); qb>ULP0
nEndPos = input.readLong(); r:*G{m-
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input.close(); j=r1JV
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} ;aQ``B
catch(IOException e){e.printStackTrace ();} _ *f>UW*,
catch(Exception e){e.printStackTrace ();} @*z"Hi>4
} 'D\X$^J^
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private void processErrorCode(int nErrorCode) *HoRYCL
{ t2[/eM.G
System.err.println("Error Code : " + nErrorCode); \VpEUU6^U
} JR!-1tnc
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