/* ~]n=TEJ>
**SiteFileFetch.java h2i1w^f
*/ !\^W *nQ>l
package NetFox; $H&:R&Us
import java.io.*; d b*J
import java.net.*; 9kbczL^Y
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public class SiteFileFetch extends Thread { >t%@)]*N
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SiteInfoBean siteInfoBean = null; //文件信息Bean (Ap?ixrR_
long[] nStartPos; //开始位置 'T;;-M3*
long[] nEndPos; //结束位置 -MFePpUt
FileSplitterFetch[] fileSplitterFetch; //子线程对象 "z_},TCy
long nFileLength; //文件长度 D6C h6i5$
boolean bFirst = true; //是否第一次取文件 t
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boolean bStop = false; //停止标志 %8d]JQ
File tmpFile; //文件下载的临时信息 +*aC
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DataOutputStream output; //输出到文件的输出流 dQO5
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ,R-aO= %
public SiteFileFetch(SiteInfoBean bean) throws IOException agQDd8 oX
{ Lg|d[*;'7
siteInfoBean = bean; $R:Q R?
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); m1xR uj]
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); T8yMaC
if(tmpFile.exists ()) O{Z${TC[
{ eo.B0NZsF
bFirst = false; QGE0pWL-a
read_nPos(); J"TF@7{p
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else w6pXF5ur>
{ >2X-98,
nStartPos = new long[bean.getNSplitter()]; \)ZCB7|
nEndPos = new long[bean.getNSplitter()]; Eh$1piJG
} <d >!%
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} >`0mn|+
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public void run() %joL}f[
{ dcyHp>\)|
//获得文件长度 Cl{Ar8d}
//分割文件 2u+!7D!w$
//实例FileSplitterFetch g!9|1z
//启动FileSplitterFetch线程 [1 O{yPV3s
//等待子线程返回 $g/h=w@
try{ ;~'& m
if(bFirst) g(,^';j
{ [AA}P/iW
nFileLength = getFileSize(); i83[':
if(nFileLength == -1) d[XMQX
{ nd7g8P9p
System.err.println("File Length is not known!"); U]@?[+I0]
} 0=K8 nxdx
else if(nFileLength == -2) Y*S:/b~y
{ JYv<QsD
System.err.println("File is not access!"); o"_'cNAz
} `!AI:c*3p1
else `#vbV/sM
{ A7|L|+ ?
for(int i=0;i<nStartPos.length;i++) AWKJ@&pA9m
{ G=SMz+z
nStartPos = (long)(i*(nFileLength/nStartPos.length)); a6 1!j>Kx
} 9C0#K\
for(int i=0;i<nEndPos.length-1;i++) iq[IZdza
{ 1ANb=X|hig
nEndPos = nStartPos[i+1]; vm'Z A7f6
} lW|v_oP9
nEndPos[nEndPos.length-1] = nFileLength; JodD6;P
} ic"8'Rwb
} Vzo<ma^
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//启动子线程 QWEE%}\3}
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; @BF1X.4-+
for(int i=0;i<nStartPos.length;i++) wy0?*)~
{ yMTO 5~U{
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), M.r7^9 P
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), }a.j~>rq
nStartPos,nEndPos,i); ! ?/:p.
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Pg{1' -
fileSplitterFetch.start(); 0H]{,mVs
} KIag(!&
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ,&qC
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 4+s6cQ]S`
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", k)|.<
nEndPos = " + nFileLength); %yu =,J j
// fileSplitterFetch[nPos.length-1].start(); " aCAA#$J
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//等待子线程结束 _lFw1pa#\
//int count = 0; *8/Xh)B;
//是否结束while循环 fe,6YXUf
boolean breakWhile = false; Zd-6_,r
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while(!bStop) AyOibnoZ2E
{ V?1 $H
write_nPos(); 5UO+c(T
Utility.sleep(500); -4&
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breakWhile = true; C5,fX-2Q
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for(int i=0;i<nStartPos.length;i++) .
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{ tmooS7\a
if(!fileSplitterFetch.bDownOver) ACdPF_Y]
{ ABX%oZ7[|o
breakWhile = false; A>1$?A8Q
break; .t5.(0Xk[A
} 4^F%bXJ)
} 9ziFjP+1
if(breakWhile) =I@t%Y
break; (^m]
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//count++; jk03 Hd
//if(count>4) Aj4 a-vd.
// siteStop(); {;c'@U
} At4\D+J{Vs
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System.err.println("文件下载结束!"); )Y7H@e\1
} Og/aTR<;=
catch(Exception e){e.printStackTrace ();} bOFzq>k_
} ` 3qf}=Z`
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//获得文件长度 8(L$a1#5W
public long getFileSize() }kqh[`:
{ ,X4+i8Yc
int nFileLength = -1; Mw/9DrE7/
try{ o@e/P;E
URL url = new URL(siteInfoBean.getSSiteURL()); (Xh<F
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); sFTAE1|
httpConnection.setRequestProperty("User-Agent","NetFox"); WiS3W;
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int responseCode=httpConnection.getResponseCode(); XB7Aa)
if(responseCode>=400) nF <K84
{ ES~b f
processErrorCode(responseCode); pCs3-&rI3
return -2; //-2 represent access is error mgAjD.
} im2mA8OH
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String sHeader; _ ;j1g%
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for(int i=1;;i++) R^l0Bu]X
{ Z7a@$n3h
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 6]brL.eGj
//Utility.log(in.readLine()); EZ)b E9
sHeader=httpConnection.getHeaderFieldKey(i); &n6{wtBP
if(sHeader!=null) q]?qeF[
{ tO M$'0u
if(sHeader.equals("Content-Length")) MzIDeZ
{ 4z0gyCAC A
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 4&mY-N7A
break; M\R+:O&
} dk|LC-]`A
} |OH*c3~r
else GW,EyOE+~
break; /mkT7,]
} Lh[0B.g<
} rl|'.~mc
catch(IOException e){e.printStackTrace ();} uy{O
catch(Exception e){e.printStackTrace ();} & FhJ%JK
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Utility.log(nFileLength); 4z<c8
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return nFileLength; ;'S,JGpvT
} duG!QS:
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//保存下载信息(文件指针位置) ^*ZaqMA
private void write_nPos() 32ki ?\P
{ t2dsYU/
try{ 9JA@m
output = new DataOutputStream(new FileOutputStream(tmpFile)); OJ&'Z}LB
output.writeInt(nStartPos.length); l
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for(int i=0;i<nStartPos.length;i++) ]Y[N=G
{ 2IB{FO/
// output.writeLong(nPos); (<Cq_Kw
output.writeLong(fileSplitterFetch.nStartPos); j\ y!
output.writeLong(fileSplitterFetch.nEndPos); vb>F)X?b_
} +=($mcw#[
output.close(); r2RJb6
} @[r[l#4yUi
catch(IOException e){e.printStackTrace ();} eK7A8\;e
catch(Exception e){e.printStackTrace ();} c(Dp`f,
} v'hc-Q9+>
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//读取保存的下载信息(文件指针位置) 1M`E.Ztw*
private void read_nPos() ,WyEwc]
{ x1 |/
try{ 3 yx[*'e$
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); rj=as>6B
int nCount = input.readInt(); {!2K-7;
nStartPos = new long[nCount]; +R*DE5dz
nEndPos = new long[nCount]; 7NvKpinQ
for(int i=0;i<nStartPos.length;i++) $FPq8$V
{ 2K:A4)jZ
nStartPos = input.readLong(); }d.X2?
nEndPos = input.readLong(); &PC6C<<f
} =;Q/bD->
input.close(); ](JrEg$K
} T,!EL+o4
catch(IOException e){e.printStackTrace ();} R'gd/.[e
catch(Exception e){e.printStackTrace ();} FAM{p=t]HT
} F3bTFFt
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private void processErrorCode(int nErrorCode) _$UJ'W})/
{ X.<3/
System.err.println("Error Code : " + nErrorCode); Z^'~iU-?
} h3`}{
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//停止文件下载 1m5l((d
public void siteStop() Rw'}>?k]
{ :)lS9<Y}
bStop = true; N}#Rw2Vl
for(int i=0;i<nStartPos.length;i++) 1'f_C<.0
fileSplitterFetch.splitterStop(); )%^l+w+&
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