/* ,QZNH?Cp/
**SiteFileFetch.java +*')0I
*/ 'k1vV
package NetFox; |{j\7G*5
import java.io.*; .}4^b\
import java.net.*; lI&5.,2MP
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public class SiteFileFetch extends Thread { ndE" v"_H
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SiteInfoBean siteInfoBean = null; //文件信息Bean h)o5j-M>4
long[] nStartPos; //开始位置 G,,7.%eib=
long[] nEndPos; //结束位置 a?NoNv)&
FileSplitterFetch[] fileSplitterFetch; //子线程对象 iYR`|PJi
long nFileLength; //文件长度 6z3`*B
boolean bFirst = true; //是否第一次取文件 }[O/u <Z
boolean bStop = false; //停止标志 c)q'" r
File tmpFile; //文件下载的临时信息 -NL=^O$G
DataOutputStream output; //输出到文件的输出流 y/\0qQ/
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 4^uwZ:
public SiteFileFetch(SiteInfoBean bean) throws IOException )"sJaHx<
{ G>?'b
siteInfoBean = bean; zAA3bgaa
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); i[r>^U8O
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); BHrNDpv
if(tmpFile.exists ()) kWm[Lt
{ |-zefzD|
bFirst = false; ~]S%b3>
read_nPos(); rIRkXO)
} s^lm
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else ^a #
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nStartPos = new long[bean.getNSplitter()]; CeD(!1VG
nEndPos = new long[bean.getNSplitter()]; v;$cx*?
} & Do|Hw
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public void run() .'Rz
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{ ?'%9
//获得文件长度 sNbCOTow
//分割文件 f`Wces=5
//实例FileSplitterFetch YLkdT%
//启动FileSplitterFetch线程 y|h:{<
//等待子线程返回 b8~7C4
try{ 'j oE-{
if(bFirst) &C&?kS(
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nFileLength = getFileSize(); 34s>hm=0.
if(nFileLength == -1) hutdw>
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System.err.println("File Length is not known!"); ~X2
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else if(nFileLength == -2) s{@3G8
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System.err.println("File is not access!"); sA1 XtO<&7
} em,j>qp
else ]<<+#Rg
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for(int i=0;i<nStartPos.length;i++) b+!I_g4P
{ o)SA^5
nStartPos = (long)(i*(nFileLength/nStartPos.length)); S<=|i
} /}&@1
for(int i=0;i<nEndPos.length-1;i++) oV,lEXz
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nEndPos = nStartPos[i+1]; fF.qQTy;7
} oaMh5FPy
nEndPos[nEndPos.length-1] = nFileLength; D4;6}gRC
} l>{+X )
} h$#zuqm
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//启动子线程 y_A7CG"^
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ?CHFy2%Y
for(int i=0;i<nStartPos.length;i++) J]mq|vE
{ |:G`f8q9
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), $]I",ef
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), vm4q1!!(
nStartPos,nEndPos,i); /Zm5fw9
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); YdiXj |k+
fileSplitterFetch.start(); HP
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} g)UYpi?p-}
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 3X]\p}]z
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); d`ESe'j:
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 6j5?&)xJ
nEndPos = " + nFileLength); g4=6\vg
// fileSplitterFetch[nPos.length-1].start(); w?Nx^)xX
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//等待子线程结束 O({vHqN>
//int count = 0; MsLQ'9%Au
//是否结束while循环 t]PO4GA
boolean breakWhile = false; UCDvN
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while(!bStop)
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{ BBUXoz
write_nPos(); i=DoK{`L
Utility.sleep(500); \[F4ooe
breakWhile = true; .pd_SQ~
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for(int i=0;i<nStartPos.length;i++) 50J"cGs~
{ Q?"-[6[v
if(!fileSplitterFetch.bDownOver) XF=GmkO
{ 53jtwklA
breakWhile = false; o;<oXv
break; MF%>avRj
} wD'LX
} BR[f{)a5
if(breakWhile) b*@y/ e\u`
break;
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//count++; q9mYhT/Im
//if(count>4) FMBzTD
// siteStop(); ~IP3~m D
} ]'a9>o
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System.err.println("文件下载结束!"); _m8JU
} BoMf#l.3B
catch(Exception e){e.printStackTrace ();} TRSR5D[
} c7$U0JO
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//获得文件长度 3kl\W[`?
public long getFileSize() \hcb~>=C
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int nFileLength = -1; (HZzA7eph
try{ V3]"ROH
URL url = new URL(siteInfoBean.getSSiteURL()); C)Ez>~Z
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); hc4W|Ofj
httpConnection.setRequestProperty("User-Agent","NetFox"); ND|!U#wMNV
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int responseCode=httpConnection.getResponseCode(); 1]lm0bfs
if(responseCode>=400) |( =`l
{ ]/y&5X
processErrorCode(responseCode); 3#@ETt0X(
return -2; //-2 represent access is error &bO0Rn1F
} "jyh.@<
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String sHeader; c>*RQ4vE
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for(int i=1;;i++) s)~60c
{ '[h|f
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ^KsiTVY
//Utility.log(in.readLine()); 5YG?m{hyn_
sHeader=httpConnection.getHeaderFieldKey(i); f/:XIG
if(sHeader!=null) Y:0SrB!\
{ z7H[\ 4A!>
if(sHeader.equals("Content-Length")) b6k'`vLA
{ j+c<0,Kj
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); h6dVT9
break; TCd1JF0
} ^BruRgc+
} ~X/1%
else `<C/-Au
break; B0^0d*8t|@
} B0KZdBRx}
}
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catch(IOException e){e.printStackTrace ();} wER>a (
catch(Exception e){e.printStackTrace ();} JKkR963 O
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Utility.log(nFileLength); `.FvuwP
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