/* tS7u#YMh
**SiteFileFetch.java U_No/$ b
*/ 2Mda'T8
package NetFox; 9iE66N>z
import java.io.*; ]'q<wPi
import java.net.*; D~:fn|/Brp
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public class SiteFileFetch extends Thread { ,R+u%bmn#
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SiteInfoBean siteInfoBean = null; //文件信息Bean wah`
long[] nStartPos; //开始位置 S SXSgp
long[] nEndPos; //结束位置 L/I-(08!Y:
FileSplitterFetch[] fileSplitterFetch; //子线程对象 _c2#
long nFileLength; //文件长度 nq=fSK(
boolean bFirst = true; //是否第一次取文件 l;uEw
boolean bStop = false; //停止标志 /L.a:Er$
File tmpFile; //文件下载的临时信息 ?*4zNhL
DataOutputStream output; //输出到文件的输出流 p98lu'?@
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) P7b2I=t
public SiteFileFetch(SiteInfoBean bean) throws IOException ]Gr'Bt /
{ dQ[lXV[}v
siteInfoBean = bean; WxFjpJt
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ARE~jzakg
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); /Q!F/HY3ZS
if(tmpFile.exists ()) vF,l?cU~
{ W5p}oN
bFirst = false; RC 48e._t
read_nPos(); c nzPq\
} JI&>w-~D
else R|suBF3
{ TO.NCO\x
nStartPos = new long[bean.getNSplitter()]; luMNi^FQ
nEndPos = new long[bean.getNSplitter()]; II91Ia
} jnTl%aQYc
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} b Y>Ug{O;
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public void run() L!5f*
{ k=@Q#=;*[W
//获得文件长度 '.=Z2O3p
//分割文件 [Ue>KG62=
//实例FileSplitterFetch P}5aN_v\
//启动FileSplitterFetch线程 zE[c$KPP
//等待子线程返回 ^{s)`j'I*
try{ mT.F$Y9
if(bFirst) Cn,jLy
{ HiC\U%We
nFileLength = getFileSize(); 6"DvdJ0MB
if(nFileLength == -1) r#XDgZtI
{ :* 'i\
System.err.println("File Length is not known!"); )"1D-Bc\Q
} oVu>jO:.
else if(nFileLength == -2) en
{ -b{*8(d<I
System.err.println("File is not access!"); gor6c3i
} x!< C0N>?z
else M;(lc?Rv
{ TX>;2S3q
for(int i=0;i<nStartPos.length;i++) pTTif|c
{ MwuH.# Ez
nStartPos = (long)(i*(nFileLength/nStartPos.length)); D,hl+P{^K
} 6?_Uow}
for(int i=0;i<nEndPos.length-1;i++) ;02lmpBj
{ ?eu=0|d
nEndPos = nStartPos[i+1]; 4_mh
} .,c8cq?
nEndPos[nEndPos.length-1] = nFileLength; K|B1jdzL
} PQfx0n,
} {>z.y1
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//启动子线程 Rl,B !SF
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; +`[$w<I
for(int i=0;i<nStartPos.length;i++) `S!`=26Z!
{ ';1
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), !{4p+peqJV
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), YB 4R8}4
nStartPos,nEndPos,i); ZFRKh:|
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 9@h>_1RJz
fileSplitterFetch.start(); y,%w`
} nK:39D$(
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 04(h!@!g:
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); $)'{+1
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 7mu%| !
nEndPos = " + nFileLength); DF|qNX
// fileSplitterFetch[nPos.length-1].start(); We" "/X
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//等待子线程结束 r2Q"NVw
//int count = 0; J)R2O4OEd
//是否结束while循环 o?b"B+#
boolean breakWhile = false; t >8t|t+
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while(!bStop) <cl$?].RE!
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write_nPos(); A$-{WN.W
Utility.sleep(500); xd>2TW l#
breakWhile = true; t rHj7Nw
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for(int i=0;i<nStartPos.length;i++) %~6+=*(\
{ D0(gEb
if(!fileSplitterFetch.bDownOver) /WM
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{ 87*R#((
breakWhile = false; au GN~"n^
break; {2V=BDS|?K
} {t9U]hX%A[
} %2>FSE
if(breakWhile) '2%hc\P6P
break; s_RYYaM
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//count++; /1O6;'8He
//if(count>4) K<V(h#(.@
// siteStop(); %';n9M
} q6osRK*20
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System.err.println("文件下载结束!"); A^g81s.5
} >(\[ $
catch(Exception e){e.printStackTrace ();} S46[2-v1
} y{kXd1,
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//获得文件长度 Bw{W-&$o
public long getFileSize() BURiLEYZl
{ ?lbX.+
int nFileLength = -1; u_mm*o~)g
try{ k5<lkC2z
URL url = new URL(siteInfoBean.getSSiteURL()); h; {?z
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); !4
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httpConnection.setRequestProperty("User-Agent","NetFox"); 2Y$==j
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int responseCode=httpConnection.getResponseCode(); 2wu
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if(responseCode>=400) FxD" z3D
{ YP#OI6u
processErrorCode(responseCode); );=JoRQ{
return -2; //-2 represent access is error 71wyZJ
} Ef7Kx49I
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String sHeader; +LrW#K;
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for(int i=1;;i++) Q>||HtF$A
{ M?]ObIM:5
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 6Q\n<&,{
//Utility.log(in.readLine()); !(+?\+U lE
sHeader=httpConnection.getHeaderFieldKey(i); {9P<G]Z
if(sHeader!=null) 1tg
{ 2Q<_l*kk(
if(sHeader.equals("Content-Length")) `M\L6o
{ }~\J7R'
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); lJq
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break; `.><$F
} bv|v9_i
} 5*ABw6'6
else =. OWsFv
break; CuDU~)`
} .t\Yv/|`
} {_ Wtk@
catch(IOException e){e.printStackTrace ();} .o
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catch(Exception e){e.printStackTrace ();} Kz 'W
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Utility.log(nFileLength); W;j*lII
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return nFileLength; _*&<hAZj
} W6]iJ
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//保存下载信息(文件指针位置) nEs l
private void write_nPos() ,![C8il,
{ g[!sGa&
try{ Be?mIwc_g
output = new DataOutputStream(new FileOutputStream(tmpFile)); qOkw6jfluh
output.writeInt(nStartPos.length); drF"kTD"7
for(int i=0;i<nStartPos.length;i++) 6eQrupa
{ s2&UeYbIs
// output.writeLong(nPos); Hs2L$TX
output.writeLong(fileSplitterFetch.nStartPos); w)3LY F
output.writeLong(fileSplitterFetch.nEndPos); |RHX2sso
} mnG\UK,k
output.close(); \b~zyt6-
} %K?~$;Z.
catch(IOException e){e.printStackTrace ();} TS@EE&W