/* r8`ffH
**SiteFileFetch.java W=~~5jFX
*/ .]8ZwAs=&
package NetFox; c[0}AGJ
import java.io.*; E>6MeO
import java.net.*; KjD/o?JUr
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public class SiteFileFetch extends Thread { j\eI0b @*
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SiteInfoBean siteInfoBean = null; //文件信息Bean ju8>:y8
long[] nStartPos; //开始位置 9)l$ aBa
long[] nEndPos; //结束位置 k
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FileSplitterFetch[] fileSplitterFetch; //子线程对象 .yoH/2h
long nFileLength; //文件长度 3(>B Ke
boolean bFirst = true; //是否第一次取文件 tj' \tW+s'
boolean bStop = false; //停止标志 %Hu5K>ZNYp
File tmpFile; //文件下载的临时信息 t*p71U4+I
DataOutputStream output; //输出到文件的输出流 s
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) &sl0W-;0
public SiteFileFetch(SiteInfoBean bean) throws IOException bTI|F]^!
{ .#EFLXs
siteInfoBean = bean;
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//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ,V7nzhA2
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Z3Og=XHR
if(tmpFile.exists ()) x[cL
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{ N:^n('U&j
bFirst = false; lqy Qf$t
read_nPos(); :a!^
} _5w]a 2
else Q3 ea{!r
{ %:i7s-0w
nStartPos = new long[bean.getNSplitter()]; Jx:Y-$
nEndPos = new long[bean.getNSplitter()]; \<bx[,?
} n3WlZ!$
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} [z:!j$K
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public void run() ;[ZEDF5H
{ juJklSD
//获得文件长度 GblA9F7
//分割文件 nkPh,X\N0
//实例FileSplitterFetch 9+|$$)
//启动FileSplitterFetch线程 U4'#T%*
//等待子线程返回 jRa43ck
try{ RbB.q p
if(bFirst) p%ki>p )E|
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nFileLength = getFileSize(); x>K Or,f
if(nFileLength == -1) yxPazz
{ /|}EL%a
System.err.println("File Length is not known!"); l$KA)xbI
} v&\Q8!r_
else if(nFileLength == -2) hPB9@hT$
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System.err.println("File is not access!"); :
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} ,)cM3nu
else #~]zhHI
{ gT.sjd
for(int i=0;i<nStartPos.length;i++) As&Sq-NWf
{ %@b0[ZC
nStartPos = (long)(i*(nFileLength/nStartPos.length)); :U|1 xgB
} LENq_@$
for(int i=0;i<nEndPos.length-1;i++) dFxIF;C>/
{ M)Z7k/=<P
nEndPos = nStartPos[i+1]; K8|r&`X0
} bW427B0
nEndPos[nEndPos.length-1] = nFileLength; n`_{9R
} >b}o~F^J
} 6yG^p]zZ
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//启动子线程 'ZF{R3Xu
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; =ZznFVJ`={
for(int i=0;i<nStartPos.length;i++) NG=-NxEcN
{ bSlF=jT[S
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), /{J4:N'B>
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), t.y2ff<[U
nStartPos,nEndPos,i); NN{?z!
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); /U*C\ xMm
fileSplitterFetch.start(); X,%
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} M]
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// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 9rX&uP)j^#
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); e2Pcm_Ahv*
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", a5"D @E
nEndPos = " + nFileLength); 5V~oIL
// fileSplitterFetch[nPos.length-1].start(); &m7]v,&
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//等待子线程结束 _.Nbt(mz
//int count = 0; y14;%aQN
//是否结束while循环 +) om^e@.
boolean breakWhile = false; 76Cl\rV
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while(!bStop) +o{R _
{ r+i($jMs
write_nPos(); NNR`!Pty
Utility.sleep(500); | j`@eF/"
breakWhile = true; P1 8hxXE3
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for(int i=0;i<nStartPos.length;i++) [b%D3-}'
{ SM#]H-3
if(!fileSplitterFetch.bDownOver) 4he GnMD
{ 65P0,b6"OT
breakWhile = false; /t57!&
break; aiUY>M#|
} =:Fc;n>c<K
} $9#H04.x
if(breakWhile) x /S}Q8!"}
break; \ZFGw&yN
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//count++; ]@c+]{
//if(count>4) #U4F0BdA
// siteStop(); iN\4gQ!
} LgU_LcoM*
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System.err.println("文件下载结束!"); {SPq$B_VR
} BLdvyVFx
catch(Exception e){e.printStackTrace ();} &j`} vg
} '~<m~UXvD#
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//获得文件长度 qPK*%Q<;
public long getFileSize() \;3~a9q%
{ YeL#jtC
int nFileLength = -1; ~s*)f.l
try{ *uf'zQ<9
URL url = new URL(siteInfoBean.getSSiteURL()); =pO^7g
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ~O0 $Suv
httpConnection.setRequestProperty("User-Agent","NetFox");
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int responseCode=httpConnection.getResponseCode(); C*_C;6.~Y
if(responseCode>=400) c
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{ SI-q C
processErrorCode(responseCode); g`' !HGY
return -2; //-2 represent access is error 4N_R:B-Vu
} uAJx.>$b
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String sHeader; b9J_1Gl]
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for(int i=1;;i++) @ $ ;q;
{ mbTEp*H
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); fI}to&qk
//Utility.log(in.readLine()); v5#jZ$<F
sHeader=httpConnection.getHeaderFieldKey(i); wedbx00o
if(sHeader!=null) EoR}Af
{ x.!V^HQSN
if(sHeader.equals("Content-Length")) w!-gJmX>
{ l'-Bu(
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 5h=}j
break; KE5kOU;
} '4+
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} :Uzm
else (l~AV9!m:
break; 2^[`e g
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} S]e|"n~@
catch(IOException e){e.printStackTrace ();} SumF
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catch(Exception e){e.printStackTrace ();} s 8jV(P(O
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Utility.log(nFileLength); pHXm>gTd,J
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return nFileLength; +ZaSM~
} #C74z$
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//保存下载信息(文件指针位置) / |;RV"
private void write_nPos() Ct <udO
{ Pe_W;q.
try{ GbY7_N
output = new DataOutputStream(new FileOutputStream(tmpFile)); Y1W1=Uc uk
output.writeInt(nStartPos.length); 36&e.3/#
for(int i=0;i<nStartPos.length;i++) Eak$u>Fd8c
{ rK6l8)o
// output.writeLong(nPos); |/|5UiX7
output.writeLong(fileSplitterFetch.nStartPos); T"}5}6rSG
output.writeLong(fileSplitterFetch.nEndPos); *MFIV02[N
} T9E+\D
output.close(); r,8 [O
} bivuqKA
catch(IOException e){e.printStackTrace ();} x*\Y)9Vgy
catch(Exception e){e.printStackTrace ();} -e"H ^:
} )5Q~I,dP
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//读取保存的下载信息(文件指针位置) lwxaMjaL4K
private void read_nPos() "+R+6<