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**SiteFileFetch.java 8D6rShx =
*/ \:D"#s%x
package NetFox; HGl.dO7NU
import java.io.*; A#KfG1K>
import java.net.*; \zx$]|AQ
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public class SiteFileFetch extends Thread { ['jr+gIfQ
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SiteInfoBean siteInfoBean = null; //文件信息Bean $
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long[] nStartPos; //开始位置 r%412#
long[] nEndPos; //结束位置 `|WEzW~
FileSplitterFetch[] fileSplitterFetch; //子线程对象 SBh"^q
long nFileLength; //文件长度 Q]hl+C$d"/
boolean bFirst = true; //是否第一次取文件 <tto8Y
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boolean bStop = false; //停止标志 G;Py%8
File tmpFile; //文件下载的临时信息 Y4Y~ep
DataOutputStream output; //输出到文件的输出流 6'45c1e
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) $L"h|>b\o
public SiteFileFetch(SiteInfoBean bean) throws IOException X;7hy0Y
{ (d>}Fp
siteInfoBean = bean; _bn
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//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); )18C(V-x
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); O
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if(tmpFile.exists ()) M2pFXU?]
{ Z]08gH
bFirst = false; X+kgx!u'y
read_nPos(); ?Sr7c|a2
} W^YaC
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else H*HL:o-[
{ zvK'j"Wq=
nStartPos = new long[bean.getNSplitter()]; sf"vi i,1A
nEndPos = new long[bean.getNSplitter()]; -CLBf'a
} %U6A"?To
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public void run() @Yn+ir0>O
{ K5!OvqzG
//获得文件长度 '<{Jlz(u9
//分割文件 `j8pgnY>5~
//实例FileSplitterFetch |]5`T9K@b#
//启动FileSplitterFetch线程 b/?)_pg
//等待子线程返回 "!ks7:}v
try{ +{0v@6<(02
if(bFirst) #I1q,fm
{ ?Wc+
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nFileLength = getFileSize(); X0Wx\xDg[
if(nFileLength == -1) ?j&ZzK'#^
{ SY.ZEJcv
System.err.println("File Length is not known!"); !
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} |DYgc$2pN
else if(nFileLength == -2) cn: L]%<
{ ?dPr HSy
System.err.println("File is not access!"); C\4d.~C:w3
} >gDeuye
else k~F;G=P
{ n?;h-KKO:
for(int i=0;i<nStartPos.length;i++) `<{LW>Lb
{ P\WFm
nStartPos = (long)(i*(nFileLength/nStartPos.length)); W-*HAS
} {Fqwr>e
for(int i=0;i<nEndPos.length-1;i++) C^;>HAK|F
{ &u~Pp=kv
nEndPos = nStartPos[i+1]; "j&'R#$&d
} S+"Bq:u"
nEndPos[nEndPos.length-1] = nFileLength; N<ux4tz
} H32o7]lT
} ]&N>F8.L+
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//启动子线程 o".,JnbXl
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; YUHiD*
for(int i=0;i<nStartPos.length;i++) ~KRS0^
{ @v#,SF {
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), &>B"/z
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), z(>QGzyc
nStartPos,nEndPos,i); +xvn n
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ^Ua6.RH8
fileSplitterFetch.start(); bLSc=f&
} \Z,{De%
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), w$Fg0JS
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); {
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// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", M9""(`U
nEndPos = " + nFileLength); m"'}{3$%
// fileSplitterFetch[nPos.length-1].start(); $8xb|S[
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//等待子线程结束 SZyORN
//int count = 0; % P Ex
//是否结束while循环 #]6{>n1*+w
boolean breakWhile = false; J8i,[,KcE
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while(!bStop) JSi0-S[Y{
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write_nPos(); Mn/@?K?y
Utility.sleep(500); hl7 z1h
breakWhile = true; NPS*0 y/
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for(int i=0;i<nStartPos.length;i++) g&y^ r/
{ dzBP<Xyh
if(!fileSplitterFetch.bDownOver) as|w} $
{ gFKJbjT|
breakWhile = false; `d$@1
break; ~!5=o{wy
} #XA`n@2Uoo
} !{(Bc8
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if(breakWhile) tV`=o$`
break; RG""/x;
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//count++; giX[2`^NG
//if(count>4) R-j*fO}
// siteStop(); eF22 ~P
} .=
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System.err.println("文件下载结束!"); ]5c(:T F
} +IWH7 qRtp
catch(Exception e){e.printStackTrace ();} {V2"Pym?
} +q'1P}e
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//获得文件长度 v={{$=/t
public long getFileSize() ur\6~'l4
{ 7>__ fQu
int nFileLength = -1; 3@Mh* \;\b
try{ Qk:Lo*!
URL url = new URL(siteInfoBean.getSSiteURL()); &Y=0 0
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); `a4&_`E,p
httpConnection.setRequestProperty("User-Agent","NetFox"); {g<D:"Q
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int responseCode=httpConnection.getResponseCode(); )*;Tt @'y
if(responseCode>=400) &Mk!qE<:N
{ %S^hqC
processErrorCode(responseCode); #f2k*8"eAF
return -2; //-2 represent access is error !%,7*F(
} _|#abLh%
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String sHeader; i D IY|
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for(int i=1;;i++) G+8)a$?v
{ W^tD6H;
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 0\tac/
//Utility.log(in.readLine()); S} m=|3%y
sHeader=httpConnection.getHeaderFieldKey(i); -[7+g
if(sHeader!=null) #cfiN b}GX
{ Yub}AuU`v
if(sHeader.equals("Content-Length")) #c^]p/
{ iWf+wC|
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 1_]X
break; .n]"vpWm[
} Xxg|01
} NZvgkci_(u
else yxt"vm;
break; o72r `2
} kw#X,hP
} ;'n%\*+fHH
catch(IOException e){e.printStackTrace ();} Z!"-LQJ
catch(Exception e){e.printStackTrace ();} 6dIPgie3w
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Utility.log(nFileLength); w.?4}'DK
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return nFileLength; >3uNh:|>/
} |H?t+Dyn)q
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//保存下载信息(文件指针位置) ks#3
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private void write_nPos() 'Lrn<
{ lmeTW0U@9(
try{ =NF0E8O
output = new DataOutputStream(new FileOutputStream(tmpFile)); fN&\8SPE
output.writeInt(nStartPos.length); zZ=SAjT QP
for(int i=0;i<nStartPos.length;i++) A(FnU:
{ Z =+Z96
// output.writeLong(nPos); JQ03om--(
output.writeLong(fileSplitterFetch.nStartPos); qbv\uYow3k
output.writeLong(fileSplitterFetch.nEndPos); '=_(fa,
} EQm{qc;
output.close(); ?\V#^q-
} E_ns4k#uG
catch(IOException e){e.printStackTrace ();} ;4rhhh&