/* f@,hO5h(_|
**SiteFileFetch.java * wQZ'
*/ {HE.mHy
package NetFox; ;
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import java.io.*; TZ`]#^kU
import java.net.*; 1.ugXD
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public class SiteFileFetch extends Thread { :&\E\9
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SiteInfoBean siteInfoBean = null; //文件信息Bean Kuzy&NI^w
long[] nStartPos; //开始位置 2#Q"@
long[] nEndPos; //结束位置 XEe+&VQmY
FileSplitterFetch[] fileSplitterFetch; //子线程对象 SFm.<^6
long nFileLength; //文件长度 BLYk
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boolean bFirst = true; //是否第一次取文件 (p#;6Xhf
boolean bStop = false; //停止标志 &*?!*+!,i
File tmpFile; //文件下载的临时信息 Vq;{+j(
DataOutputStream output; //输出到文件的输出流 IhFw {=2*
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) PPIG?fK)
public SiteFileFetch(SiteInfoBean bean) throws IOException 83O^e&Bt
{ Q Kuc21
siteInfoBean = bean; [^"(%{H
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Y-q,Ovf!
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); &VBD2_T
if(tmpFile.exists ()) ~{]m8a/ `6
{ @bVh?T0~F,
bFirst = false; Wb-'E%K
read_nPos(); 1:~m)"?I_^
} &,gryBN
else 9zGKQ |X)
{ oXZ@*
nStartPos = new long[bean.getNSplitter()]; '| Q*~Lh
nEndPos = new long[bean.getNSplitter()]; -|iA!w#31
} ;V(}F!U\z
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} w<^2h}5
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public void run() "u$]q1S
{ d'@H@
//获得文件长度 TKs@?Q,J
//分割文件 $S-;M0G
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//实例FileSplitterFetch 'MM~~:
//启动FileSplitterFetch线程 Jj _+YfIM
//等待子线程返回 LRlk9:QD>
try{ oDiv9jm
if(bFirst) zyQEz#O
{ ~$&r(9P
nFileLength = getFileSize(); O%h
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if(nFileLength == -1) O5n]4)<
{ l4.@YYzbp.
System.err.println("File Length is not known!"); u2Z^iY
} )RKhEm%Vr2
else if(nFileLength == -2) Tqh Rs
{ @^jLYu|W
System.err.println("File is not access!"); gJfL$S'w
} MvwJ(3
else H;8]GE2n
{ _=$!T;}lE
for(int i=0;i<nStartPos.length;i++) p:n^c5
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); XA^:n+Yo
} ee?Mo`
for(int i=0;i<nEndPos.length-1;i++) 0r&9AnnWu+
{ *LQY6=H
nEndPos = nStartPos[i+1]; bM_(`]&*
} f9bz:_;W_
nEndPos[nEndPos.length-1] = nFileLength; PSw+E';
} DG
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} !d@`r1t
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//启动子线程 0cU^ue%
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; { qx,X.5$
for(int i=0;i<nStartPos.length;i++) vrDRSc6_
{ uzA'D ~)P
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), *F&&rsb
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), <plR<iI.
nStartPos,nEndPos,i); %dR./{txT
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 7C
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fileSplitterFetch.start(); ~n
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} JNl+UH:.
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), / kGX 6hh
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ><7`$ 2Or
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", <TuSU[]
nEndPos = " + nFileLength); &4FdA|9T
// fileSplitterFetch[nPos.length-1].start(); rl7Y=*Dv
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//等待子线程结束 :_zKUv]
//int count = 0; wpI4P:
//是否结束while循环 8PS:yBkA|
boolean breakWhile = false; ![tI(TPq
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while(!bStop) t1^96@m^
{ *p!dd?8
write_nPos(); ~.PYS!" +
Utility.sleep(500); 1ouTZ'c?
breakWhile = true; FCPRg^=<!~
c y$$}
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for(int i=0;i<nStartPos.length;i++) Qd?P[xm
{ uy{KV"%"^g
if(!fileSplitterFetch.bDownOver) BI]t}7
{ d`/{0 :F
breakWhile = false; I SmnZ@
break; B)dynGF8i
} N!,l4!M\N
} 0k 8SDRWU
if(breakWhile) /K<Nlxcm
break; 0]~n8mB>
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//count++; )^+$5OR\c
//if(count>4) wP9C\W;
// siteStop(); '5--eYG
} *1n:
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System.err.println("文件下载结束!"); d6VKUAk'7>
} [PT_y3'%
catch(Exception e){e.printStackTrace ();} Y# #J
} ?`>yl4
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//获得文件长度 ;Z*RCuwg
public long getFileSize() );[`rXH_
{ Su7?-vY
int nFileLength = -1; SccU@3.X~
try{ q.7CPm+
URL url = new URL(siteInfoBean.getSSiteURL()); ?H`LrL/k
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); N\?iU8w=
httpConnection.setRequestProperty("User-Agent","NetFox"); lI 8"o>-~
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}!LYV
int responseCode=httpConnection.getResponseCode(); l
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if(responseCode>=400) slx^" BF^
{ DiX4wmQ
processErrorCode(responseCode); jDoWSYu4tY
return -2; //-2 represent access is error d<Di;5
} PD?H5W3@
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String sHeader; 9HE)!Col
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for(int i=1;;i++) l;2bBx7vW
{ Oq("E(z+f
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); +*dJddz
//Utility.log(in.readLine());
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sHeader=httpConnection.getHeaderFieldKey(i); ,y.0Cb0
if(sHeader!=null) b6lL8KOu
{ y^
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if(sHeader.equals("Content-Length")) X DX_c@U
{ P7o6B,9
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); V)`?J)
break; 7 mN?;X33
} ft7wMi
} .28*vkH%C=
else k"Is.[I?^
break; r,}Zc W+
} V= _8G3
} R
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catch(IOException e){e.printStackTrace ();} /~yqZD<O
catch(Exception e){e.printStackTrace ();} ";~#epPkX
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Utility.log(nFileLength); y8L:nnSj
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return nFileLength; @MM|.#
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} K!9=e7|P
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//保存下载信息(文件指针位置) 8,R]R=
private void write_nPos() uC3$iY:_e
{ YmwVa
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try{ ?YS`?Rr
output = new DataOutputStream(new FileOutputStream(tmpFile)); a'\`Mi@rb
output.writeInt(nStartPos.length); Li'T{0)1)
for(int i=0;i<nStartPos.length;i++) >GcFk&x
{ YZk& 'w
// output.writeLong(nPos); zx!1jS
output.writeLong(fileSplitterFetch.nStartPos); z}&