/* P b-4$n2c
**SiteFileFetch.java A^c
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package NetFox; ::p%R@?
import java.io.*; s
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import java.net.*; 00B,1Q HP
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public class SiteFileFetch extends Thread { %Rt
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SiteInfoBean siteInfoBean = null; //文件信息Bean Bz(L}V]\k
long[] nStartPos; //开始位置 uZTbJ3$$
long[] nEndPos; //结束位置 Yl&bv#[z
FileSplitterFetch[] fileSplitterFetch; //子线程对象 >Hu3Guik]
long nFileLength; //文件长度 xS4?M<|L63
boolean bFirst = true; //是否第一次取文件 u9{SG^
boolean bStop = false; //停止标志 N\"Hf=Y(~
File tmpFile; //文件下载的临时信息 EQe$~}[
DataOutputStream output; //输出到文件的输出流 q[Tl#*P?y
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) JXV#V7
public SiteFileFetch(SiteInfoBean bean) throws IOException _?]W%R|
{ JXjH}C
siteInfoBean = bean; GkxQEL
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); DS+BX`i%#p
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); O=vD6@QI
if(tmpFile.exists ()) 9mW
{ Py?e+[cN
bFirst = false; `,O"^zR)z
read_nPos(); L#?mPF
} 0 .UN
else l,9rd[
{ ]4/C19Fe!
nStartPos = new long[bean.getNSplitter()]; @EURp
nEndPos = new long[bean.getNSplitter()]; DR
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} EL%P v1
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} :]4s;q:m
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public void run() ~]24">VZf
{ m7`S@qG
//获得文件长度 ecx_&J@D
//分割文件 h@]{j_$u
//实例FileSplitterFetch PdEPDyFk h
//启动FileSplitterFetch线程 D-D8La?0p
//等待子线程返回 NiEz3ODSi
try{ ]N,'3`&::
if(bFirst) Q@|"xKa
{ h+7U'+|%A
nFileLength = getFileSize(); *%\Xw*\0
if(nFileLength == -1) $WE=u 9m
{ ;pS+S0U
System.err.println("File Length is not known!"); t<"`gM^|
} P9R-41!
else if(nFileLength == -2) c(29JZ
{ eY%Ep=J
System.err.println("File is not access!"); _+)n}Se
} H@1qU|4
else EiP N44(
{ V6+:g=@U-l
for(int i=0;i<nStartPos.length;i++) @Z7s3b
{ >l=jJTJ;q
nStartPos = (long)(i*(nFileLength/nStartPos.length)); Uu@qS
} B
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for(int i=0;i<nEndPos.length-1;i++) Ki1 zi~
{ ks69Z|D
nEndPos = nStartPos[i+1]; J*zQ8\f=}
} APJFy@l}
nEndPos[nEndPos.length-1] = nFileLength; !]9qQ7+R%
} _{
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} s'd\"WaQV
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//启动子线程 bdvpH DA
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ;mr*$Iu 7|
for(int i=0;i<nStartPos.length;i++) 0'Qvis[kt
{ X{[$4\di{
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), D51s)?
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 4/_!F'j
nStartPos,nEndPos,i); FW)~e*@8=
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); a[,p1}!_
fileSplitterFetch.start(); 5Q:49S47
} wzmQRn;s
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), :c Er{U8
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); B/mfm 7
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", h`eHoKJ#w
nEndPos = " + nFileLength); 56u_viZ=8
// fileSplitterFetch[nPos.length-1].start(); pV!WZUfg
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//等待子线程结束 <u1`o`|-
//int count = 0; ]l3Y=Cl
//是否结束while循环 C[l5[DpH
boolean breakWhile = false; g $^Yv4
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while(!bStop) hBifn\dFr
{ 'Q=(1a11
write_nPos(); )c 79&S
Utility.sleep(500); bj_/
breakWhile = true; ka{!' ^
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for(int i=0;i<nStartPos.length;i++) (yeWArQ
{ k!x`cp
if(!fileSplitterFetch.bDownOver) *o!#5c
{ rt?*eC1b+Z
breakWhile = false; r^ '
break; K$s{e0
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} ?%D nIl>
}
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if(breakWhile) /)dyAX(
break; A6E~GJa
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//count++; NSR][h_
//if(count>4) >7cDfv"
// siteStop(); r;>.*60AT
} |@f\[v9`
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System.err.println("文件下载结束!"); /1bQ
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} 9/I
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catch(Exception e){e.printStackTrace ();} 5)0'$Xxqa0
} F[)tg#}@G
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//获得文件长度 N0ef5J
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public long getFileSize() ^V]IPGV
{ \>{;,f
int nFileLength = -1; ZqjLZ9?q
try{ o!c~"
URL url = new URL(siteInfoBean.getSSiteURL()); ]mC5Z6,1s
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); k\g:uIsv$
httpConnection.setRequestProperty("User-Agent","NetFox"); >LPIvmT4D?
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int responseCode=httpConnection.getResponseCode(); J: I@kM
if(responseCode>=400) I%B\Wy/j^
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processErrorCode(responseCode); mHH>qW{`
return -2; //-2 represent access is error 58eO|c(
} VtGZB3
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String sHeader; PY&mLux%
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for(int i=1;;i++) Z.s0ddMs
{ 2lqy <o
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); F6>oGmLy
//Utility.log(in.readLine()); .Sv/0&O
sHeader=httpConnection.getHeaderFieldKey(i); 7")~JBH
if(sHeader!=null) +wI<w|!
{ 8PWEQ<ev7>
if(sHeader.equals("Content-Length")) >Pvz5Hf/wW
{ b"B:DDw00
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ,/!^ZS*
break; q0NToVo@
} *>xCX
} }d5~w[
else P'*Fd3B#A=
break; bL+}n8B
} \5Y<UJKi
} ~@T`0W-Py
catch(IOException e){e.printStackTrace ();} \p]B8hLW
catch(Exception e){e.printStackTrace ();} %joU}G;"
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Utility.log(nFileLength); jX^_(Kg
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return nFileLength; )t CNp
} :H+8E5
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//保存下载信息(文件指针位置) ~qK/w0=j
private void write_nPos() QZ*gR#K]Sz
{ $+$l?2
try{ P]armg%
output = new DataOutputStream(new FileOutputStream(tmpFile)); p./0N.
output.writeInt(nStartPos.length); ;WgUhA
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for(int i=0;i<nStartPos.length;i++) OB*V4Yv
{ ?/myG{E
// output.writeLong(nPos); G.PRPl
output.writeLong(fileSplitterFetch.nStartPos); BfD&