/* ,y+}0q-Ou
**SiteFileFetch.java /Y>$w$S
*/ vncak
package NetFox; cBO.96ZHE
import java.io.*; ]d}U68$T+
import java.net.*; ue5C
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public class SiteFileFetch extends Thread { O{^ET:K@
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SiteInfoBean siteInfoBean = null; //文件信息Bean ?4kM5NtP
long[] nStartPos; //开始位置 tR,&|?0
long[] nEndPos; //结束位置 R*l#[D5A
FileSplitterFetch[] fileSplitterFetch; //子线程对象 MrW#~S|ED
long nFileLength; //文件长度 oM&}akPE
boolean bFirst = true; //是否第一次取文件 ^11y8[[
boolean bStop = false; //停止标志 z)RJUmY3B
File tmpFile; //文件下载的临时信息 0.9%m7.m
DataOutputStream output; //输出到文件的输出流 _7h:NLd
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) _%xe:X+ M
public SiteFileFetch(SiteInfoBean bean) throws IOException J\kGD
{ &X^ -|7~N
siteInfoBean = bean; "h-G=vo,kl
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); A{HP*x~t
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); yl>V'
if(tmpFile.exists ()) +ld]P}
{ s\)0f_I
bFirst = false; 'UYxVh9D
read_nPos(); (9#$za>
} g H+s)6
else y h
{ m~[4eH,
nStartPos = new long[bean.getNSplitter()]; pf\
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nEndPos = new long[bean.getNSplitter()]; 8QYP\7}o
} >tmv3_<=
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public void run() -W/Lg5eK
{ X 5.%e&`
//获得文件长度 A5UZUU^
//分割文件 D%=VhKq
//实例FileSplitterFetch g[D(]t\#x
//启动FileSplitterFetch线程 kM0TQX)$m
//等待子线程返回 >FVBn;1
try{ pk%%}tP<
if(bFirst) kB2]Z}
{ 0tL#-47
nFileLength = getFileSize(); 88@" +2
if(nFileLength == -1) v%ldg833l
{ ?06+"Z
System.err.println("File Length is not known!"); I@$cw3
} #~_ZG% u
else if(nFileLength == -2) 9J*M~gKbz
{ >/r^l)`9_f
System.err.println("File is not access!"); UABaS(f3
} qG]G0|f
else wWVLwp4-
{ sjZ@}Vk3b
for(int i=0;i<nStartPos.length;i++) 'ie+/O@G
{ _d[4EY
nStartPos = (long)(i*(nFileLength/nStartPos.length)); w$aiVOjgT
} (~6D`g`B
for(int i=0;i<nEndPos.length-1;i++) !Ojf9 6is
{ Jq5](F!z
nEndPos = nStartPos[i+1]; ?tA<:.<vtY
} #OQT@uF!
nEndPos[nEndPos.length-1] = nFileLength; q':P9o*N?
} !kTI@103Wd
} R_vF$X'O w
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//启动子线程 W$>AK_Y}
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; R0WI s:k2
for(int i=0;i<nStartPos.length;i++) 8l50@c4UF~
{ 5x2m]u
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), [U^@Bk h
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), !.EDQ1k
nStartPos,nEndPos,i); nNEIwlj;
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); +o4W8f=Ga
fileSplitterFetch.start(); <`f~Z|/-_(
} f\|R<3 L
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), C$<['D?8
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Dcep^8'
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", X!AD]sK
nEndPos = " + nFileLength); k"L?("~
// fileSplitterFetch[nPos.length-1].start(); &gr)U3w
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//等待子线程结束 mu>L9Z~(L_
//int count = 0; )HL[_WfY
//是否结束while循环 ~Pm[Ud
boolean breakWhile = false; YQ`m;<
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while(!bStop) 7rZE7+%]
{ VGVb3@
write_nPos(); H wu(}
Utility.sleep(500); 2," (
breakWhile = true; w vQ.9
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for(int i=0;i<nStartPos.length;i++) Lc?q0x^s
{ =iFI@2
if(!fileSplitterFetch.bDownOver) P'Gf7sQt7
{ s6YnNJ,SK
breakWhile = false; )/Mk\``j
break; b-"kclK
} ]iHSUP
} qJyGr ?
if(breakWhile) qQ/<\6Sl
break; I&s!} $cD
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//count++; "/~KB~bB
//if(count>4) t91z<Y|
// siteStop(); ndE" v"_H
} z"PU`v
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System.err.println("文件下载结束!"); -h`[w:
} i9O;D*
catch(Exception e){e.printStackTrace ();} f.{/PL
} F=9-po
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//获得文件长度 k "Qr
public long getFileSize() 0/~20 KD{s
{ 0V!@*Z
int nFileLength = -1; zAA3bgaa
try{ loByT
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URL url = new URL(siteInfoBean.getSSiteURL()); 6EY W:o
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 8oxYgj&~X
httpConnection.setRequestProperty("User-Agent","NetFox"); ~]S%b3>
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int responseCode=httpConnection.getResponseCode(); L8.u7(-#
if(responseCode>=400) C?-_8OA
{ qQ^bUpk0
processErrorCode(responseCode); %;-r->
return -2; //-2 represent access is error e00s*LdC
} u[b0MNE~
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String sHeader; wNtPh&
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for(int i=1;;i++) (|t)MnPfY
{ NxzRVsNF
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); {Ip)%uR
//Utility.log(in.readLine()); 34s>hm=0.
sHeader=httpConnection.getHeaderFieldKey(i); Fb^f`UI
if(sHeader!=null) yT pvKCC
{ nZP%Z=p7
if(sHeader.equals("Content-Length")) s{@3G8
{ OtD!@GQ6
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); daN#6e4Z+;
break; *R8qnvE\()
} whb,2=gIE
} VU ,tCTXz
else LvbS")
break; 6SVh6o@]
} s3+6Z~g'B
} ,.-85isco
catch(IOException e){e.printStackTrace ();} y>iot e~
catch(Exception e){e.printStackTrace ();} 0OF ]|hH
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Utility.log(nFileLength); Zzea
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return nFileLength; p({)ZU3
} >#8J@=iuqv
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//保存下载信息(文件指针位置) 4M3{P
private void write_nPos() ,W:Bh$%
{ hJasnY7
try{ C
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output = new DataOutputStream(new FileOutputStream(tmpFile)); 8^)K|+_'m
output.writeInt(nStartPos.length); F]k$O $)0
for(int i=0;i<nStartPos.length;i++) A_xUP9g@?
{ rn"}@5
// output.writeLong(nPos); y+K21(z.
output.writeLong(fileSplitterFetch.nStartPos); QJKVNOo
output.writeLong(fileSplitterFetch.nEndPos); gW_^GrK pI
} XJ9l,:c,
output.close(); [/Ya4=C@
} .BqSE
catch(IOException e){e.printStackTrace ();} 8j%hxAV$
catch(Exception e){e.printStackTrace ();} w7Y>B`wm?
} o^b4l'&o
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//读取保存的下载信息(文件指针位置) xulwn{R s
private void read_nPos() jm$v0=W9#
{ 'l`T(_zL\%
try{ e Zb8x
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Bp:i[9w
int nCount = input.readInt(); &