/* v0)I rO
**SiteFileFetch.java !t/I
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*/ R{"Kh2q_
package NetFox; }t }y
import java.io.*; {2Jo|z
import java.net.*; NO5\|.,Z
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public class SiteFileFetch extends Thread { <7-:flQz~
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SiteInfoBean siteInfoBean = null; //文件信息Bean o?zA'5q
long[] nStartPos; //开始位置 ]E/^(T-O
long[] nEndPos; //结束位置 M4[(.8iE
FileSplitterFetch[] fileSplitterFetch; //子线程对象 !Au'WJfE
long nFileLength; //文件长度 5Fa.X|R~
boolean bFirst = true; //是否第一次取文件 wq$+m(
boolean bStop = false; //停止标志 D@@J7
File tmpFile; //文件下载的临时信息 @I_!q*
DataOutputStream output; //输出到文件的输出流 (JV [7u -
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 4mYJ i#e6x
public SiteFileFetch(SiteInfoBean bean) throws IOException !R@v\Eu
{ Z!HQ|')N5
siteInfoBean = bean; &c[.&L,w4
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); r{oRN
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); /j%(Z/RM
if(tmpFile.exists ()) QX`Qnk|Y
{ Cn6<I {`\
bFirst = false; 2z*EamF
read_nPos(); u*n%cXY;J/
} 4WspPHj
else 3i\<#{
{ n:dnBwY
nStartPos = new long[bean.getNSplitter()]; f%#q}vK-
nEndPos = new long[bean.getNSplitter()]; 'P'f`;'_DC
} ":igYh
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} 7LotN6H
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public void run() ]*/%5ZOI&
{ sKu/VAh
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//获得文件长度 +g.lLb*#
//分割文件 *I)F5M
//实例FileSplitterFetch eHX;*~e6)
//启动FileSplitterFetch线程 <rQ+ErDA
//等待子线程返回 opaRk.p
try{ 7&O0
if(bFirst) T~D2rt\
{ uv#."_Va
nFileLength = getFileSize(); )\O;Rt(
if(nFileLength == -1) kg/<<RO
{ 8cKP_Ec
System.err.println("File Length is not known!"); n?a?U:
} >^!)G^B
else if(nFileLength == -2) 1@}s:
{ *'l|ws
System.err.println("File is not access!"); f3;.+hJ])
} bz'#YM
else *@+E82D
{ Z@1vJH6IbA
for(int i=0;i<nStartPos.length;i++) PS:"mP7n
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); 6B8gMO
} &m5FYm\
for(int i=0;i<nEndPos.length-1;i++) ^}Wk
{ yiO/0n Mp
nEndPos = nStartPos[i+1]; +H**VdM6s
} %3kS;AaA
nEndPos[nEndPos.length-1] = nFileLength; Y[~Dj@Q<
} zm~sq_=^
} %mF Z!(
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//启动子线程 fUKi@*^ZUa
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ^.gBHZ
for(int i=0;i<nStartPos.length;i++) UlD]!5NO
{
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), bnzIDsw!Q
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), !,Uzt1K:
nStartPos,nEndPos,i); v\ <4y P
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); O[<YYL0
fileSplitterFetch.start();
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} [sc4ULS &
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), {kOTQG?y
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 8M6wc394
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", &P:2`\'
nEndPos = " + nFileLength); :jHDeF.A
// fileSplitterFetch[nPos.length-1].start(); 5fDp"-
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//等待子线程结束 NK!#K>AO
//int count = 0; /6@$^paB
//是否结束while循环 H"b}lf
boolean breakWhile = false; crlCN
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while(!bStop) 0\KDa$'1k
{ &6O0h0Vy
write_nPos(); \Y$@$)
Utility.sleep(500); D:=Q)Uh0I
breakWhile = true; ^&!iq K2o
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for(int i=0;i<nStartPos.length;i++) ., =\/ C<
{ c2~oPUj
if(!fileSplitterFetch.bDownOver) [kKg?I$D@B
{ H[[#h=r0f
breakWhile = false; LXq0hI
break; +Ua.\1"6
} q]rqFP0C
} e13' dCG
if(breakWhile) 78h!D[6
break; VlFhfOR6t
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//count++; =2OLyZDI
//if(count>4) )u>/:
// siteStop(); La8 D%N
} YgR}y+q^6
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System.err.println("文件下载结束!"); |y DaFv
} EHH+)mlo
catch(Exception e){e.printStackTrace ();} E5Zxp3 N
} P;V5f8r?
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//获得文件长度
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public long getFileSize() bZCNW$C3l
{ ZRn!z`.0
int nFileLength = -1; PL*1-t?#
try{ i:n1Di1~E
URL url = new URL(siteInfoBean.getSSiteURL()); I*EHZctH
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); |'!9mvt=
httpConnection.setRequestProperty("User-Agent","NetFox"); M d.^r5r
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int responseCode=httpConnection.getResponseCode(); q vGP$g
if(responseCode>=400) =v6qr~
{ JLh{>_Rr
processErrorCode(responseCode); Ocf :73t
return -2; //-2 represent access is error V*%Lc9<d
} r68d\N`.
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String sHeader; 4;)aGN{e
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for(int i=1;;i++) 3Q2z+`x'
{ TQ69O +
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); i/j eb*d0
//Utility.log(in.readLine()); Jk_}y
sHeader=httpConnection.getHeaderFieldKey(i); .2x`Fj;o1
if(sHeader!=null) v@Bk)Z
{ +P|Z1a -jB
if(sHeader.equals("Content-Length")) 7CSd}@71\
{ (
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); &w{:
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break; =q<t,U P8
} ^
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} #sb@)Q
else LDYk\[81
break; x.ucsb
} w'&QNm>
} Q+zy\T
catch(IOException e){e.printStackTrace ();} VskdC?yIp
catch(Exception e){e.printStackTrace ();} ~!#2s'
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Utility.log(nFileLength); Wq"^ {
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return nFileLength; *x@.$=NF"
} XpT+xv1`;
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//保存下载信息(文件指针位置) ~vw$Rnotz
private void write_nPos() [zr2\(
{ N(Xg#m
try{ kA{eT
output = new DataOutputStream(new FileOutputStream(tmpFile)); E=RX^ 3+}
output.writeInt(nStartPos.length); KCi0v
for(int i=0;i<nStartPos.length;i++) gmdA1$c
{ >L,Pw1Y0W[
// output.writeLong(nPos); VdF<#(X+
output.writeLong(fileSplitterFetch.nStartPos); 25/M2u?
output.writeLong(fileSplitterFetch.nEndPos); ?;ovh nY)
} 4rH:`494
output.close(); F+285JK
} m?`?T
catch(IOException e){e.printStackTrace ();} bI+ TFOP
catch(Exception e){e.printStackTrace ();} 68nBc~iAm
} Q=#@g
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//读取保存的下载信息(文件指针位置) FGu#Pa
private void read_nPos() L
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{ xAu&O\V
try{ Zz^!QlF
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); `c /mmS
int nCount = input.readInt(); >m4HCs>
nStartPos = new long[nCount]; mM\jU5P:^
nEndPos = new long[nCount]; 57`9{.HB
for(int i=0;i<nStartPos.length;i++) ;\rKkH"K8n
{ {:ZsUnzm
nStartPos = input.readLong(); FSA"U9 w<
nEndPos = input.readLong(); Bw4 _hlm
} K%(DRkj)
input.close(); w?"s6L3
} baz~luM
catch(IOException e){e.printStackTrace ();} /tu\q
catch(Exception e){e.printStackTrace ();} {]3Rk
} ~s-"u
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private void processErrorCode(int nErrorCode) *IV_evgM7
{ DRmN+2I
System.err.println("Error Code : " + nErrorCode); N\W4LO6
} ,&0iFUwN_
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//停止文件下载 $-"V
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public void siteStop() F.@U
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{ %617f=(E?!
bStop = true; X$9
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for(int i=0;i<nStartPos.length;i++) +=g9T`YbE
fileSplitterFetch.splitterStop(); (VB-5&b
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