/* xIS\4]F?r
**SiteFileFetch.java 6.7`0v?,n
*/ vh<]aiY
package NetFox; QN)/,=#
import java.io.*; fKPiRlLS
import java.net.*; JVD@I{
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public class SiteFileFetch extends Thread { pi^^L@@d
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SiteInfoBean siteInfoBean = null; //文件信息Bean 66I|0_
long[] nStartPos; //开始位置 }s`jl``PM
long[] nEndPos; //结束位置 P3+)pOE-SI
FileSplitterFetch[] fileSplitterFetch; //子线程对象 aeG#:
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long nFileLength; //文件长度 ML=hKwCA
boolean bFirst = true; //是否第一次取文件 9
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boolean bStop = false; //停止标志 Aivu %}_|
File tmpFile; //文件下载的临时信息 _ff=B
DataOutputStream output; //输出到文件的输出流 DCEvr" (
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 2(c<U6#C'l
public SiteFileFetch(SiteInfoBean bean) throws IOException 4a(g<5wfI
{ JK@izI
siteInfoBean = bean; |HaU3E*R
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); aDm-X r
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); *]{9K
if(tmpFile.exists ()) tU+@1~
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{ 2"pE&QNd
bFirst = false; xB?S#5G}
read_nPos(); F,'^se4&
} ddUjs8VvJ
else `U{o:
{ YWt"|
nStartPos = new long[bean.getNSplitter()]; qR [}EX&3
nEndPos = new long[bean.getNSplitter()]; =q_&*'
}
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public void run() opUKrB
{ `A4QU,0
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//获得文件长度 Bg+<*z-?e
//分割文件 y)?W-5zL
//实例FileSplitterFetch pRQfx^On
//启动FileSplitterFetch线程
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//等待子线程返回 ,^MW)Gf<
try{ 7,V!Iv^X
if(bFirst) g5kYyE
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nFileLength = getFileSize(); w\"n!^ms
if(nFileLength == -1) n:5O9,umZ
{ ?=;e.qK=71
System.err.println("File Length is not known!"); es.\e.HK
} ,cGwtt(
else if(nFileLength == -2) Gt\K Ln
{ /RA1d<~$q
System.err.println("File is not access!"); jSeA%Te
} $I}Hk^X
else xJ[k#?T'
{ 88 tFB
for(int i=0;i<nStartPos.length;i++) ()@.;R.Z
{ {V]Qwz)1
nStartPos = (long)(i*(nFileLength/nStartPos.length)); CX&yjT6`
} eZN3H"H
for(int i=0;i<nEndPos.length-1;i++) 7]M,yIwc
{ ?)Czl4J
nEndPos = nStartPos[i+1]; &xGfkCP.]
} z:ru68
nEndPos[nEndPos.length-1] = nFileLength; <B]i80.
} Dyouk+08x
} 1jUhG2y
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//启动子线程 3PvZ_!G
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; P`Hd*xh".j
for(int i=0;i<nStartPos.length;i++) zCBtD_@
{ /XWPN(JC?
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), [#hl}q(P#
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 4pfix1F g
nStartPos,nEndPos,i); `mq4WXO\
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Vq .!(x
fileSplitterFetch.start(); Kc JP^
} ]v^`+s}3
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), bMqu5G_q
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 1^x2WlUm4
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", E&iWtwkz
nEndPos = " + nFileLength); =M/UHOY
// fileSplitterFetch[nPos.length-1].start(); .gM>FUH3L
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//等待子线程结束 Ww'TCWk@
//int count = 0; r?5@Etpg
//是否结束while循环 Uf7F8JZmM
boolean breakWhile = false; <\}Y@g8
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while(!bStop) <iXS0k
{ b2}QoJ@`
write_nPos(); #czyr@
Utility.sleep(500); -~<q,p"e
breakWhile = true; 5,0wj0l
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for(int i=0;i<nStartPos.length;i++) =& Tu`m
{ 6uCk0
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if(!fileSplitterFetch.bDownOver) 7'{Yz
{ r'9=kx
breakWhile = false; Y6;0khp
break; =XacG}_
} |oBdryi
} a!0?L0_W&
if(breakWhile) 7/D9n9F
break; _M"$5
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//count++; uhw5O9
//if(count>4) Eis%)oE
// siteStop(); `jUS{ 3^
} B(en5|
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System.err.println("文件下载结束!"); WB=<W#?w7%
} ?G>5 D`V
catch(Exception e){e.printStackTrace ();} nIT ^'
} Kc9mI>u H
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//获得文件长度 I?> -
public long getFileSize() #)PGQ)(
{ 6XOpB^@
int nFileLength = -1; zNsL^;uT
try{ -X&!dV:= 4
URL url = new URL(siteInfoBean.getSSiteURL()); J++sTQ(!?
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); AG$-U2ap
httpConnection.setRequestProperty("User-Agent","NetFox"); a_pCjG89
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int responseCode=httpConnection.getResponseCode(); Z|Lh^G
if(responseCode>=400)
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{ :i,c<k
processErrorCode(responseCode); H%NLL4&wu
return -2; //-2 represent access is error 9$P l'>5
} F'5d\ v
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String sHeader; ~U7\ LBF
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for(int i=1;;i++) uu@'02G8
{ YW$x:
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); M;p q2$
//Utility.log(in.readLine()); [BZ(p
sHeader=httpConnection.getHeaderFieldKey(i); T24#gF~
if(sHeader!=null) E?m#S
{ @rK>yPhf
if(sHeader.equals("Content-Length")) C>\!'^u1
{ QnP?;
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 2p3u6\y
break; q|
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} |Z7bd^
} t~<-4N$(
else @'<j!CqQ
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break; 1[gjb((
} P{i8
} <k-@R!K~JC
catch(IOException e){e.printStackTrace ();} U70@}5!
catch(Exception e){e.printStackTrace ();} [q>i
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Utility.log(nFileLength); (fGJP*YO
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return nFileLength; 6dS1\Y
} _@~kYz
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//保存下载信息(文件指针位置) oIL+@}u7
private void write_nPos() qiKtR
{ 5.K$
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try{ ETWmeMN
output = new DataOutputStream(new FileOutputStream(tmpFile)); #PLB$$
output.writeInt(nStartPos.length); w`#0
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for(int i=0;i<nStartPos.length;i++) m/F(h-?
{ Zz)oMw
// output.writeLong(nPos); !K^kKP*l
output.writeLong(fileSplitterFetch.nStartPos); NX{-D}1X=
output.writeLong(fileSplitterFetch.nEndPos); }Mb'tGW
} _F|_C5A
output.close(); p4t!T=o/
} 2wuW5H8w{
catch(IOException e){e.printStackTrace ();} KlqJEtO_
catch(Exception e){e.printStackTrace ();} @8M2'R\
} WPp\sIP
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//读取保存的下载信息(文件指针位置) 'ZZWH
private void read_nPos() $:gSc&mx
{ C(|T/rQ-
try{ K9N0kBJ0<
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); >->xhlL*
int nCount = input.readInt(); >*i8RqU
nStartPos = new long[nCount]; #2vG_B<M)
nEndPos = new long[nCount]; HAUTCX
for(int i=0;i<nStartPos.length;i++) -IsdU7}
{ (zYSSf!I
nStartPos = input.readLong(); K"6+X|yxE
nEndPos = input.readLong(); gS<