/* _ OaRY]
**SiteFileFetch.java C*I(|.i@
*/ %>WbmpIyc
package NetFox; ;50_0Mv;(:
import java.io.*; jAND7&W
import java.net.*; X jE>k!=I
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public class SiteFileFetch extends Thread { =C
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SiteInfoBean siteInfoBean = null; //文件信息Bean ArI]`h'W
long[] nStartPos; //开始位置 ^*^/]vM
long[] nEndPos; //结束位置 *OdX u&5
FileSplitterFetch[] fileSplitterFetch; //子线程对象 !]S=z^"<
long nFileLength; //文件长度 HhkN^S,
boolean bFirst = true; //是否第一次取文件 n~Szf
boolean bStop = false; //停止标志 *C,N'M<u
File tmpFile; //文件下载的临时信息 z]Acs
DataOutputStream output; //输出到文件的输出流 HXJ9xkrr
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) E=/[s]@5
public SiteFileFetch(SiteInfoBean bean) throws IOException >&H~nGP.
{ TRKgBK$,
siteInfoBean = bean; aEx(rLd+
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); .dI)R40L/\
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); agd)ag4"[u
if(tmpFile.exists ()) C$#W{2x%6
{ r(}nhU Q%E
bFirst = false; 9DEh*%q
read_nPos(); [BBpQN.^q6
} b4 hIeBI\
else c6b0*!D"}
{ 7CrpUh
nStartPos = new long[bean.getNSplitter()]; xaL#MIR"u"
nEndPos = new long[bean.getNSplitter()]; Dw |3Z
} ;IC'Gq
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} Q[s2}Z!N;
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public void run() *?8RXer
{ g8yN%)[
//获得文件长度 Ko}2%4on
//分割文件 fr#Qz{
//实例FileSplitterFetch X&\o{w9%
//启动FileSplitterFetch线程 cw+g
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//等待子线程返回 \$;~74}
try{ 8U^D(jrz
if(bFirst) TmiWjQv`
{ 8^w/HCC8O
nFileLength = getFileSize(); 5.k}{{+
if(nFileLength == -1) wZv-b*4
{ ;i9>}]6
System.err.println("File Length is not known!"); Bn-J_-%M
} 1D$::{h
else if(nFileLength == -2) ~Oh=
{ d~<QAh#rG
System.err.println("File is not access!"); sA\L7`2H
} q2!'==h2i
else <9\,QR)
{ =xBT>h;
for(int i=0;i<nStartPos.length;i++) vfXJYw+6_
{ 6z1\a
nStartPos = (long)(i*(nFileLength/nStartPos.length)); &A"e,h(^
} tE:X,Lt[
for(int i=0;i<nEndPos.length-1;i++) H56
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nEndPos = nStartPos[i+1]; !2tw, QM
} =43d%N
nEndPos[nEndPos.length-1] = nFileLength; Tc,$TCF
} o4'Wr
} Oc^m_U8>^
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//启动子线程 hpjUkGm5
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; `x4E;Wjv
for(int i=0;i<nStartPos.length;i++) hA5,w_G/
{ Q,n4i@E
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Q!x`M4
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), IwM8#6;S~
nStartPos,nEndPos,i); CfY7<o1>
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); hU)'OKe
fileSplitterFetch.start(); bHJoEYY^
} Y.9~Bo<<r
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), \KNdZC?V2
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 4$F:NW,v:)
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", W'V@
nEndPos = " + nFileLength); pEkOSG
// fileSplitterFetch[nPos.length-1].start(); `1$y( w]
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//等待子线程结束 `>\4"`I
//int count = 0; +/w(K,
//是否结束while循环 ^ePsIl1E
boolean breakWhile = false; 33,;iE
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while(!bStop) ;*.(.
{ cP,;Qbe
write_nPos(); |&Au6 3
Utility.sleep(500); &q"'_4
breakWhile = true; |@+8]dy:l
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for(int i=0;i<nStartPos.length;i++) X:R%1+&*
{ 'HJ/2-=
if(!fileSplitterFetch.bDownOver) z^gi[
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{ fWd~-U0M^
breakWhile = false; ,zG <7~m
break; b#Jo Xa9
} g%X &f_@
} 9e-*JYF]C
if(breakWhile) R04.K!
break; xcw%RUC-
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//count++; ?_8%h`z
//if(count>4) ]c5DOv&
// siteStop(); &K+
} dFx2>6AZt
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System.err.println("文件下载结束!"); %A8Pkr<&E
}
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catch(Exception e){e.printStackTrace ();} :jBZK=3F>
} +:fqL
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//获得文件长度 $Z,i|K;
public long getFileSize() A*rZQh
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{ -l\~p4U
int nFileLength = -1; Hde]DK,d
try{ $*YC7f
URL url = new URL(siteInfoBean.getSSiteURL()); N 9c8c
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); j?Cr31
httpConnection.setRequestProperty("User-Agent","NetFox"); C usVW
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int responseCode=httpConnection.getResponseCode(); DLNa6
if(responseCode>=400) i:V0fBR[>
{ c9\B[@-q
processErrorCode(responseCode); 6e-#XCR{
return -2; //-2 represent access is error wCV>F-
} l. XknF
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String sHeader; F9Ifw><XM
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for(int i=1;;i++) ~!8%_J _
{ hZp=BM"bJ
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); *eHA:
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//Utility.log(in.readLine()); 8FxcI!A@
sHeader=httpConnection.getHeaderFieldKey(i); ,:v.L}+Z
if(sHeader!=null) .tZjdNE(h
{ fKPiRlLS
if(sHeader.equals("Content-Length")) ^zvA?'s
{
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); AeNyZ[40T
break; C>.]Bvg
} 1;cv-W
} >v^2^$^u
else ML=hKwCA
break; 1bV 2
} cxtLy&C
} BengRG[
catch(IOException e){e.printStackTrace ();} ?R|fS*e2EB
catch(Exception e){e.printStackTrace ();} @?<N +qdH>
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Utility.log(nFileLength); 2uvQf&,
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return nFileLength; LVPt*S= /
} NWo7wVwc/c
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//保存下载信息(文件指针位置) L eG7x7n
private void write_nPos() '#cT4_D^lI
{
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try{ tx:rj6-z
output = new DataOutputStream(new FileOutputStream(tmpFile)); F|]o9&/<]
output.writeInt(nStartPos.length); l%sp[uqcg
for(int i=0;i<nStartPos.length;i++) j33P~H~
{ 6MLN>)t
// output.writeLong(nPos); w5dIk]T
output.writeLong(fileSplitterFetch.nStartPos); 1R5\GKF6o
output.writeLong(fileSplitterFetch.nEndPos); -4*'WzWr
} "TBQNWZ
output.close(); /RA1d<~$q
} Vu|Br
catch(IOException e){e.printStackTrace ();} veYsctK~
catch(Exception e){e.printStackTrace ();} ^D W#
} !wLH&X$XT
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//读取保存的下载信息(文件指针位置) IyG=
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private void read_nPos() |xsV(jK8
{ $nGbT4sc
try{ j=xtnIq
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); v @$evmA
int nCount = input.readInt();
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nStartPos = new long[nCount]; zCBtD_@
nEndPos = new long[nCount]; 5 `{|[J_[
for(int i=0;i<nStartPos.length;i++) W%cj39$
{ +!L_E6pyXE
nStartPos = input.readLong(); ?RRSrr1
nEndPos = input.readLong(); 66^1&D"
} h30QCk
input.close(); |l6<GWG+
} m'Ek p
catch(IOException e){e.printStackTrace ();} BDRYip[Sa
catch(Exception e){e.printStackTrace ();} (l3UNP
} dVsAX(
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private void processErrorCode(int nErrorCode) b2}QoJ@`
{ yv!''F:9F
System.err.println("Error Code : " + nErrorCode); A/$KA'jX
} gq/ePSa
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//停止文件下载 Ew?/@KAV\
public void siteStop() c5=v`hv
{ h87L8qh9
bStop = true; 48~m=mI
for(int i=0;i<nStartPos.length;i++) 2#n$x*CY
fileSplitterFetch.splitterStop(); :b M$;
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} o%4&1^ Vg
} _} X`t8L h
//负责部分文件的抓取 TN |{P
**FileSplitterFetch.java ?(,5eg
*/ 1VjeP
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package NetFox; zNsL^;uT
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import java.io.*; D25gg
import java.net.*; 3f:1D=f
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public class FileSplitterFetch extends Thread { ZB^4 (F')H
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String sURL; //File URL W
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long nStartPos; //File Snippet Start Position #H|j-RM2
long nEndPos; //File Snippet End Position qh(-shZ4Du
int nThreadID; //Thread's ID [BZ(p
boolean bDownOver = false; //Downing is over rt@-Pw!B
boolean bStop = false; //Stop identical SbPjU50
FileAccessI fileAccessI = null; //File Access interface vU$O{|J
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Y3MR:{}
{ ,5<`+w#a
this.sURL = sURL; !iitx U
this.nStartPos = nStart; li_pM!dWU_
this.nEndPos = nEnd; 2$i 0yPv
nThreadID = id; AXU!-er$
fileAccessI = new FileAccessI(sName,nStartPos);//定位 WlQ&Yau
} xwH|ryfs,Z
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public void run() Lx:9@3'7'
{ v/TlXxfil
while(nStartPos < nEndPos && !bStop) ETWmeMN
{ ,?~UpsUx
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try{ ^SSOh#
URL url = new URL(sURL); _F|_C5A
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); w6In{uO-Z
httpConnection.setRequestProperty("User-Agent","NetFox"); mKFHT
String sProperty = "bytes="+nStartPos+"-"; ]BQWA
httpConnection.setRequestProperty("RANGE",sProperty); >/HU'
Utility.log(sProperty); 'ZZWH
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InputStream input = httpConnection.getInputStream(); io?{ew
//logResponseHead(httpConnection); f_P+qm
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byte[] b = new byte[1024]; I'%H:53^0
int nRead; }Ka.bZS
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ZR q}g:
{ bZ22O"F
nStartPos += fileAccessI.write(b,0,nRead); /'=^^%&:B