/* k:P$LzIB
**SiteFileFetch.java SFO&=P:U
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package NetFox; 1!/-)1t
import java.io.*; v.`+I-\.z)
import java.net.*; k!E"wJkpz
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public class SiteFileFetch extends Thread { f9']
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SiteInfoBean siteInfoBean = null; //文件信息Bean ,h!X k
long[] nStartPos; //开始位置 )vHi|~(
long[] nEndPos; //结束位置 /2h][zrZ[.
FileSplitterFetch[] fileSplitterFetch; //子线程对象 rl|Q)A{
long nFileLength; //文件长度 ahp1!=Z-=
boolean bFirst = true; //是否第一次取文件 &|=?acv
boolean bStop = false; //停止标志 5<N~3
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File tmpFile; //文件下载的临时信息 v>at/ef
DataOutputStream output; //输出到文件的输出流 _0]QS4a][c
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) OROqT~6G
public SiteFileFetch(SiteInfoBean bean) throws IOException k5X b}@
{ /c^e&D
siteInfoBean = bean; aQh?}=d a
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 2v\W1VF
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); |#cAsf_{
if(tmpFile.exists ()) D -iUN
{ 5bBCpNa
bFirst = false; 1NGyaI
read_nPos(); s]bPV,"p
} qC.i6IL
else qvTKfIl{
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nStartPos = new long[bean.getNSplitter()]; vXf:~G]
nEndPos = new long[bean.getNSplitter()]; lA4hm4"i(,
} ._ih$=
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public void run() &oc_a1R
{ tGqQJT#mr7
//获得文件长度 +_-Y`O!Q
//分割文件 )"-fHW+fy
//实例FileSplitterFetch \6 LcV ik
//启动FileSplitterFetch线程 ]
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//等待子线程返回 *JS"(. '(
try{ 9C>ynH
if(bFirst) 9;pzzZ
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nFileLength = getFileSize(); /KP_Vc:g2_
if(nFileLength == -1) 1:YAn
{ Vs|sw
System.err.println("File Length is not known!"); h=Oh9zsz8
} ,0.|P`|w
else if(nFileLength == -2) J5-rp|
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System.err.println("File is not access!"); `~|DoSi^d
} s79q5
else 2|
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{
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for(int i=0;i<nStartPos.length;i++) N[]U%9[=2F
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); w0$R`MOR+
} # a.\P.{L
for(int i=0;i<nEndPos.length-1;i++) ]'E}
{ Z3Gm
nEndPos = nStartPos[i+1]; Jtpa@!M
} 7Qt2gf
nEndPos[nEndPos.length-1] = nFileLength; |9x%gUm
} sD.6"w7}
} 6l<1A$BQ
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//启动子线程 `M,Nd'5&|
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; oq243\?Y
for(int i=0;i<nStartPos.length;i++) v=j>^FZ
{ |O%:P}6c
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), |o|gP8
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Ys)+9yPPn
nStartPos,nEndPos,i); v'K
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); XEa~)i{O
fileSplitterFetch.start(); FBcm;cjH
} BjwMb&a;
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 5nY9Ls(e
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); N JXa_&_
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", :mzCeX8 *
nEndPos = " + nFileLength); G^ K*+
// fileSplitterFetch[nPos.length-1].start(); 4VC/-.At
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//等待子线程结束 Ko@zk<~"[
//int count = 0; !+5C{Hs2
//是否结束while循环 |x*{fXdMhr
boolean breakWhile = false; P_v0))n{
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while(!bStop) SHytyd
{ 5FZ47m ~{Z
write_nPos(); `D4oAx d9
Utility.sleep(500); ?VUgwP_=
breakWhile = true; 9/FG,9
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for(int i=0;i<nStartPos.length;i++) fm[_@L%
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if(!fileSplitterFetch.bDownOver) /A0 [_
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breakWhile = false; c6f|y_2
break; OiYNH~hv
} xq#U4E
} U LV)0SB
if(breakWhile) ?e"Wu+q~L
break; '" ^ B&W
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//count++; xX[?L9RGz
//if(count>4) bl$+8!~
// siteStop(); <j{0!J@:
} "xL;(Fqu
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System.err.println("文件下载结束!"); sM#!Xl;
} &G0l&8pa
catch(Exception e){e.printStackTrace ();} tZdwy> ;
} N>Vacc_[
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//获得文件长度 [`y:M&@
public long getFileSize() cWgbd^J
{ 6F@zCv"w
int nFileLength = -1; *?EO n -
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URL url = new URL(siteInfoBean.getSSiteURL()); - 3C* P
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); DZ%g^DRZX
httpConnection.setRequestProperty("User-Agent","NetFox"); ZMdM_i?
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int responseCode=httpConnection.getResponseCode(); <QYCo1_
if(responseCode>=400) fO[Rf_
{ >{phyByI
processErrorCode(responseCode); JZs|~@
return -2; //-2 represent access is error CP c"
} 7p
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String sHeader; qk_p}l-F1
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for(int i=1;;i++) ~C}(\8g
{ 34X(J-1\|i
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Bpk@ {E9
//Utility.log(in.readLine()); /Ki0+(4
sHeader=httpConnection.getHeaderFieldKey(i); n@G:e-m{A
if(sHeader!=null) A8_\2'b
{ Sf+(1_^`t
if(sHeader.equals("Content-Length")) }9L 40)8
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader));
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break; 2(+RIu0d
} <Cf7E
} Zp/qs
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else XD_P\z
break; &