/* "P#1=
**SiteFileFetch.java vVSDPlN;
*/ .B<Bqr@?8
package NetFox; +@^);b6
import java.io.*; l3p :}A
import java.net.*; 3s?u05_
NW5OLa")J<
Q;VuoHj!
public class SiteFileFetch extends Thread { o/7u7BQl2
+'c+X^_
2Q%7J3I
SiteInfoBean siteInfoBean = null; //文件信息Bean uarfH]T{
long[] nStartPos; //开始位置 'm~=sC_uL
long[] nEndPos; //结束位置 9h6Oq(0b8
FileSplitterFetch[] fileSplitterFetch; //子线程对象 .,z6a
long nFileLength; //文件长度 TMMJ5\t2
boolean bFirst = true; //是否第一次取文件 N8pL2y:R[P
boolean bStop = false; //停止标志 \mh #MMp
File tmpFile; //文件下载的临时信息 F4G81^H
DataOutputStream output; //输出到文件的输出流 9o5D3
d
K
=MQ/z#:-P
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) .\_RavW23
public SiteFileFetch(SiteInfoBean bean) throws IOException T4wk$R
L
{ F<b'{qf"
siteInfoBean = bean; ':;k<(<-
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); tgG*k$8z
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); m=l'9j"D
if(tmpFile.exists ()) M\4`S&
{ K [DpH&
bFirst = false; t?G6|3
read_nPos(); 2lsUCQI;
} -ymDRoi
else \t=0rFV)t
{ :sg}e
nStartPos = new long[bean.getNSplitter()]; Dj96t5R
nEndPos = new long[bean.getNSplitter()]; HuTtp|zM>
} LE<J<~2Z
24#qg'
L>~Tc
.+ u
b\
} 1X5g(B
JXJ+lZmsz
^C'0Y.H S
public void run() :+Ukwno?/
{ 1V1I[CxlX
//获得文件长度 70 7( LG
//分割文件
Qh&Qsyo%
//实例FileSplitterFetch _|GbU1Hz
//启动FileSplitterFetch线程 [-$
Do
//等待子线程返回 ]S&ki}i&
try{ Su,:f_If,
if(bFirst) !-7n69:G
{ *"w hup[
nFileLength = getFileSize(); 4l
ZK@3
if(nFileLength == -1) 0i_:J
{ klJ21j0Bb2
System.err.println("File Length is not known!"); ;B=aK"\
} ia'z9
else if(nFileLength == -2) Q"qI'*Kgt
{ fYUV[Gm
System.err.println("File is not access!"); l{Df{1b.
} L_!ShE
else :/|"db&`
{ O,B\|pd2
for(int i=0;i<nStartPos.length;i++) 95mf
{ j-ej7
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ac l<dY6
} DD$>3`
for(int i=0;i<nEndPos.length-1;i++) GV Xdyi
{ G@H!D[wd
nEndPos = nStartPos[i+1]; "9s_[e
} V_SH90@)+
nEndPos[nEndPos.length-1] = nFileLength; z/{X{+Z
} h )
Wp
} =Hd yra
n6%`
DRQx5fgL
//启动子线程 J |q(HpB
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; #; ?3kuq(
for(int i=0;i<nStartPos.length;i++) @[3c1B6K
{ S\TXx79PhC
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), *vaYI3{qN
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ps 3)d
nStartPos,nEndPos,i); 3
39q%j$
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); bGWfMu=n
fileSplitterFetch.start(); hN'])[+V
} Tsg9,/vXM
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), )SmnLvL
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); KRaL+A
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", LQR2T5S/Q,
nEndPos = " + nFileLength); 4qie&:4j
// fileSplitterFetch[nPos.length-1].start(); F]3Y,{/V
s7Agr!>f
BNK]Os
//等待子线程结束 nzflUR{`-
//int count = 0; h+g\tYWGP
//是否结束while循环 #Lhv=0op
boolean breakWhile = false; G|g^yaq>
nQc#AFg
/WTEz\k
while(!bStop) O]u'7nO{{
{ "Q.*
write_nPos(); S!b18|o"
Utility.sleep(500); s/D)X=P1
breakWhile = true; WBE>0L
C{}_Rb'x
@V*dF|# /
for(int i=0;i<nStartPos.length;i++) q7X]kr*qx
{ OH\^j1x9I
if(!fileSplitterFetch.bDownOver) 8?+|4:#=*J
{ .Fn|Okn^gr
breakWhile = false; hk~/W}sI
break; >aVgI<
} ]b4IO4T
} $,4h\>1WP
if(breakWhile) WkTJ M
break; fM;,9
Rg?6e N
7N9NeSH
//count++; /}? 7Eni
//if(count>4) @[n#-!i
// siteStop(); 9"P|Csj
} bx3Q$|M?
<gp?}Lk
XNJ4T]><
System.err.println("文件下载结束!"); t7+A!7b{
} s6bsVAO>
catch(Exception e){e.printStackTrace ();} bHwEd%f
} m^_=^z+
kU<t~+
l[}4
X/
//获得文件长度 c2npma]DZ
public long getFileSize() tq3_az ~1
{ y}odTeq
int nFileLength = -1; C ^Y\?2h1
try{ 8-2`S*
URL url = new URL(siteInfoBean.getSSiteURL()); 4V,.Oi
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); $GJT
httpConnection.setRequestProperty("User-Agent","NetFox"); x|6]+?l@6
wX,V:QE
vQMBJ&
int responseCode=httpConnection.getResponseCode(); `R[Hxi
if(responseCode>=400) }E
'r?N
{ bNea5u##
processErrorCode(responseCode); W:]FYC
return -2; //-2 represent access is error Ww7Ya]b.k
} 3A#Tn7
,EB}IG]
z5>I9R^q;
String sHeader; :?t~|7O:
2c9?,Le/;
]b4WfIu
for(int i=1;;i++) ?{ir$M
{ 4%(Ji
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Cx7-I0!
//Utility.log(in.readLine()); !U^{`V jp[
sHeader=httpConnection.getHeaderFieldKey(i); +hxG!o?O
if(sHeader!=null) A6&*VD
{ d#ir=+o{h
if(sHeader.equals("Content-Length")) !J`lA
{ gYKz,$
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 2B,O/3y
break; O*EV~{K
} /A=w`[<
} 6%v9o?:~l
else -=ZL(r
1
break; JB_fS/I
} sXIYl% d
} R?{+&r.X
catch(IOException e){e.printStackTrace ();} F/>_PH57
catch(Exception e){e.printStackTrace ();} Wlj&_~
h@:K=ggK
Zj`WRH4
Utility.log(nFileLength); :D.0\.p
=*mT{q@
~Z\:Nx
return nFileLength; =6%oW2E\
} TktH28tK
R@vcS=m7
E[H
//保存下载信息(文件指针位置) zKJ2~=
private void write_nPos() .|UQ)J?s
{ +&EXTZ@o
try{ FfoOJzf~o
output = new DataOutputStream(new FileOutputStream(tmpFile)); gAqK)@8-
output.writeInt(nStartPos.length); -3 I3 X
for(int i=0;i<nStartPos.length;i++) $NXP)Lic)
{ aB9!}3@
// output.writeLong(nPos); ud1M-lY\U
output.writeLong(fileSplitterFetch.nStartPos); rO1!h%&o"
output.writeLong(fileSplitterFetch.nEndPos); 3*b5V<}'|
} [M?2axOC
output.close(); ahBqYAK9
} V$^jlWdR
catch(IOException e){e.printStackTrace ();} ]-fkmnmWX
catch(Exception e){e.printStackTrace ();} \o9 \ikR
} )9QtnM
XX6Z|Y5.
7>vm?a^D2&
//读取保存的下载信息(文件指针位置) 9Em#Ela
private void read_nPos() *XVwTW[a
{ A4K.,bZ
try{ [Kgb#L'{
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); |c_qq Bd
int nCount = input.readInt(); jc}G+|`
nStartPos = new long[nCount]; !vnQ;g5
nEndPos = new long[nCount]; vF$i"^;tJ;
for(int i=0;i<nStartPos.length;i++) #(8|9
{ "q@m6fs
nStartPos = input.readLong(); c OYDN[k
nEndPos = input.readLong(); Gr"CHz/
} ?1e{\XW
input.close(); ;JW_4;-
} QTV*m>D
catch(IOException e){e.printStackTrace ();} .n-#A
catch(Exception e){e.printStackTrace ();} y8Va>ul"U
} FL0uY0K
yV30x9i!2
I.2J-pu}
private void processErrorCode(int nErrorCode) eL!41_QI
{ sV^:u^
System.err.println("Error Code : " + nErrorCode); ']]d-~:
} r~w.J+W
s\ IKSoE
*7BfK(9T
//停止文件下载 k;WD[SV
public void siteStop() 4zug9kFK
{ hlTbCl
bStop = true; RaZ>.5
D
for(int i=0;i<nStartPos.length;i++) 92+8zX
fileSplitterFetch.splitterStop(); c\bL_
{pzj@b 1S
ZykMri3bi
} W:w~ M'o
} s}D>.9
//负责部分文件的抓取 ]BQYVx/
**FileSplitterFetch.java @[$_cGR7
*/ y4V:)@P
package NetFox; s0kp(t!fiu
S}m_XR]
V7ph^^sC}
import java.io.*; :Mf"
import java.net.*; $Y$9]G":
#el27"QP0
Fe+
@;
public class FileSplitterFetch extends Thread { iyskADS
s?SspuV
x 3@-E
String sURL; //File URL ao(T81
long nStartPos; //File Snippet Start Position ~MpikBf
long nEndPos; //File Snippet End Position ;"3B,Yj
int nThreadID; //Thread's ID k3\N.@\
boolean bDownOver = false; //Downing is over D}-.<
boolean bStop = false; //Stop identical XQ}Zr/f6
FileAccessI fileAccessI = null; //File Access interface =;}W)V|X)S
|(7}0]BP0
xQy,1f3s+
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ~j0rORy]
{ 'J|2c;M\x
this.sURL = sURL;
B.z$0=b
this.nStartPos = nStart; %+7]/_JO&