/* sC"w{_D@*4
**SiteFileFetch.java ,]t_9B QK
*/ oHfr
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package NetFox; 0[H/>%3O
import java.io.*; # a4OtRiI
import java.net.*; E
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public class SiteFileFetch extends Thread { %4R1rUrgt|
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SiteInfoBean siteInfoBean = null; //文件信息Bean g'!"klS93
long[] nStartPos; //开始位置 rPr]f;
long[] nEndPos; //结束位置 ~p'|A}9[/
FileSplitterFetch[] fileSplitterFetch; //子线程对象 W$7H "tg
long nFileLength; //文件长度 K20Hh7cVJ
boolean bFirst = true; //是否第一次取文件 Y4N7# 5
boolean bStop = false; //停止标志 7'At_oG
File tmpFile; //文件下载的临时信息 G'Wp)W;])\
DataOutputStream output; //输出到文件的输出流 3zmbx~| =\
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) xxg/vaQt=s
public SiteFileFetch(SiteInfoBean bean) throws IOException 2xUgM}e
{ #""T>+
siteInfoBean = bean; R@uA4Al
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); r#oJch=
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); +2tFX
if(tmpFile.exists ()) s;l"'6:_
{ Q(Yn8t
bFirst = false; OVxg9
read_nPos(); _KtV`bF
} :,yC\,H^
else MtF^}/0w!`
{ '.N}oL<gP
nStartPos = new long[bean.getNSplitter()]; T12Zak4.=
nEndPos = new long[bean.getNSplitter()]; y8C8~ -&OK
} <_kA+&T
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} XM"Qs.E
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public void run() @vib54G
{ +e.w]\}
//获得文件长度 hbr3.<o1lY
//分割文件 !%t2ZQJq
//实例FileSplitterFetch F&+qd`8J
//启动FileSplitterFetch线程 2"shB(:z>
//等待子线程返回 8D@J d
try{ 0s{7=Ef
if(bFirst) IsJx5GO
{ f8WI@]1F
nFileLength = getFileSize(); Fv)E:PnKC
if(nFileLength == -1) 9LBZMQ
{ ? EHheZ{
System.err.println("File Length is not known!"); f52P1V]
} fI<d&5&g
else if(nFileLength == -2) gs/o cu
{ &%@O V:C
System.err.println("File is not access!"); mvTp,^1
} XR[=W(m}
else W#^.)V
{ wD$UShnm9-
for(int i=0;i<nStartPos.length;i++) AOKC1iD%Y
{ kw#-\RR_c
nStartPos = (long)(i*(nFileLength/nStartPos.length)); X's<+hK&
} $)X8'1%6
for(int i=0;i<nEndPos.length-1;i++) ,LSiQmV5
{ [eOv fD
nEndPos = nStartPos[i+1]; Ok\X%avq
} < FO=PM
nEndPos[nEndPos.length-1] = nFileLength; vp*+Ckd
} "dDrw ]P;
} Gky^S#
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//启动子线程 :{lP9%J-
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; SA=>9L,2
for(int i=0;i<nStartPos.length;i++) YOrq)_ l
{ pz)>y&_o
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), xh9$ZavB*
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), %OO}0OW
nStartPos,nEndPos,i); RB% y($
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 1 ^= QIX
fileSplitterFetch.start(); +DR$ >a
} x{<l8vL=-c
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), NT5'U
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); fG$LqzyqlK
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", w=rD8@
nEndPos = " + nFileLength); Hk h'h"_r
// fileSplitterFetch[nPos.length-1].start(); hKWWN`;b !
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//等待子线程结束 vPz7*w
//int count = 0; ,J!$Q0 e
//是否结束while循环 r-.@MbBm
boolean breakWhile = false; 1TGRIe)
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while(!bStop) v*=P
{ A(
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write_nPos(); +s"6[\H1d
Utility.sleep(500); A 0k?$ko
breakWhile = true; H;=Fq+
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for(int i=0;i<nStartPos.length;i++) 4m1r@
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{ G--X)h-
if(!fileSplitterFetch.bDownOver) %>i:C-l8
{ ja';NIO-
breakWhile = false; tS]
break; TSsZzsdr2
} ZCPUNtOl
} L1/`/
if(breakWhile) Kmx^\vDs
break; A&~fw^HM
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//count++; RK|*yt"f"
//if(count>4) Hn(1_I%zF
// siteStop(); Ws@'2i\;
} |9c~kTjK
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System.err.println("文件下载结束!"); 4r1\&sI$~
} &R_7]f+%)
catch(Exception e){e.printStackTrace ();} ~,HFd`
} @>(KEjQTz
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//获得文件长度 _q27
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public long getFileSize() EaO@I.[
{ qMNWw\k
int nFileLength = -1; lZcNio
try{ LJ(WU)CPc
URL url = new URL(siteInfoBean.getSSiteURL()); nG!<wlY14P
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 8I#ir4z#<
httpConnection.setRequestProperty("User-Agent","NetFox"); 'cXdc
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int responseCode=httpConnection.getResponseCode(); sV
if(responseCode>=400) .Q*X5Fc
{ }#O!GG{
processErrorCode(responseCode); F`nQS&y
return -2; //-2 represent access is error ijF_
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} hJ'H@L7
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String sHeader; \beO5]KS<
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for(int i=1;;i++) 7Gc{&hp*
{ fe?Z33V
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); .w9LJ
//Utility.log(in.readLine()); FM@iIlY"
sHeader=httpConnection.getHeaderFieldKey(i); Zh<;r;2
if(sHeader!=null) u]J@65~'b
{ pE4a ~:
if(sHeader.equals("Content-Length")) I0)`tQ+
{ W_\zx<m
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); fGo4&( U
break; k"(]V
} nVb@sI{{k
} BX@Iq
else Wy}I"q[~So
break; I &t~o
} x *eU~e_jP
} E
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catch(IOException e){e.printStackTrace ();} }rTH<!j
catch(Exception e){e.printStackTrace ();} e#(Ck{e
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Utility.log(nFileLength); tgK
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return nFileLength; !'7fOP-J]
} Jg6Lr~!i
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//保存下载信息(文件指针位置) xt{'Be&Ya+
private void write_nPos() wl
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{ E$e7(D
try{ /Rp]"S
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output = new DataOutputStream(new FileOutputStream(tmpFile)); C6_(j48&
output.writeInt(nStartPos.length); J3K=z
for(int i=0;i<nStartPos.length;i++) IV QH
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{ yBIlwN`kB
// output.writeLong(nPos); 'Wonz<{'
output.writeLong(fileSplitterFetch.nStartPos); ]T4/dk&|o^
output.writeLong(fileSplitterFetch.nEndPos); OZ,kz2SF#
} )?L=o0
output.close(); 5gszAvOO
} m7 =$*1k
catch(IOException e){e.printStackTrace ();} sGvbL-S-f:
catch(Exception e){e.printStackTrace ();} S2~cAhR|M
} J~Xv R
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//读取保存的下载信息(文件指针位置) WL$^B@gXQ
private void read_nPos() j=_rUc'Me
{ &J[a.:..
try{ X|M!Nt0'
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); YeX*IZX8
int nCount = input.readInt(); +Q*`kg'
nStartPos = new long[nCount]; g;IlS*Ld
nEndPos = new long[nCount]; Y4T")
for(int i=0;i<nStartPos.length;i++) [\uR3$j#
{ 2EY"[xK|
nStartPos = input.readLong(); dn6B43w
nEndPos = input.readLong(); DA=U=F
} _`$LdqgE
input.close(); q>q:ZV
} <Ox[![SR
catch(IOException e){e.printStackTrace ();} yoi4w 7:
catch(Exception e){e.printStackTrace ();} &4'<