/* ]J^9iDTTA
**SiteFileFetch.java eqt+EiH
*/ }$K2h*
package NetFox; %-~W|Y
import java.io.*; +39Vxe:Oy
import java.net.*; -Yaw>$nJ
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public class SiteFileFetch extends Thread { >*xa\ve
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SiteInfoBean siteInfoBean = null; //文件信息Bean ^ <Z^3c>/
long[] nStartPos; //开始位置 FzOr#(^
long[] nEndPos; //结束位置 cD-.thHO
FileSplitterFetch[] fileSplitterFetch; //子线程对象 A>"v1Wk
long nFileLength; //文件长度 4(aDi;x "w
boolean bFirst = true; //是否第一次取文件 7m;2M]BRi
boolean bStop = false; //停止标志 4X2XSK4
File tmpFile; //文件下载的临时信息 SnK j:|bV
DataOutputStream output; //输出到文件的输出流 |aiP7C
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ALw5M'6q0\
public SiteFileFetch(SiteInfoBean bean) throws IOException ={9G.%W
{ [\o+I:,}wi
siteInfoBean = bean; 1vTncU!
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); WZk\mSNV
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); q% Eze
if(tmpFile.exists ()) |Rr^K5hmD
{ ?Gq'r2V
bFirst = false; CIt>D'/YT
read_nPos(); Rd5ni2-nve
} %0]vW;Q5
else {~g(WxE
{ 6qA48:/F=
nStartPos = new long[bean.getNSplitter()]; _=c>>X
nEndPos = new long[bean.getNSplitter()]; $9znRTFEj
} )!1; =
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} e&dE>m
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public void run() IAt;?4
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//获得文件长度 g-=)RIwm
//分割文件 tt=?*n
//实例FileSplitterFetch H'myd=*h~8
//启动FileSplitterFetch线程 ?iH`-SY
//等待子线程返回 Ti/t\'6
try{ r3o_mO?X
if(bFirst) L&1VPli
{ ; Xy\7tx
nFileLength = getFileSize(); uLYz!E+E
if(nFileLength == -1) e{edI{g
{ !1f8~"Z
System.err.println("File Length is not known!"); z`-?5-a]I
} +zxj-diM
else if(nFileLength == -2) u,0N[.&N
{ 2Mc/ah
System.err.println("File is not access!"); Sf>R7.lpP
}
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else !Gu,X'#Ab
{ u49zc9
for(int i=0;i<nStartPos.length;i++) `fEB,0j^
{ &x{CC@g/
nStartPos = (long)(i*(nFileLength/nStartPos.length)); nu,#y"WQ
} qO=_i d
for(int i=0;i<nEndPos.length-1;i++) #5GIO
{ (: IUg
nEndPos = nStartPos[i+1]; >_QC_UX>4i
} VOBzB]
nEndPos[nEndPos.length-1] = nFileLength; u7>b}+ak&
} -f0Nb+AR
} !dB {E
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//启动子线程 ` bd
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; <8MKjf
for(int i=0;i<nStartPos.length;i++) `r+"2.z*
{ 27*u^N*z@
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), jw$3cwddH
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 4C^;lK
nStartPos,nEndPos,i); P"0S94o:5J
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); V,bfD3S3
fileSplitterFetch.start(); THirh6
} b:.aZ7+4
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), A87JPX#R?
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 'v^CA}
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", c[]_gUp8
nEndPos = " + nFileLength); bs!N~,6h
// fileSplitterFetch[nPos.length-1].start(); 5uMh#dm^
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//等待子线程结束 _aVrQ@9
//int count = 0; F)/}Q[o8
//是否结束while循环 JqTkNKi/s
boolean breakWhile = false; _^Lv8a3(O
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while(!bStop) I_@\O!<y}
{ }}XYV eI
write_nPos(); cZKK\hf<
Utility.sleep(500); ) W)m?%
breakWhile = true; UKp- *YukT
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for(int i=0;i<nStartPos.length;i++) !b0'd'xe
{ 7''l\3mIn
if(!fileSplitterFetch.bDownOver) pv&:N,p
{ 3o%,8l,
breakWhile = false; @cdd~9w
break; %3scz)4$
} naCPSsei
} 2bxkZS]
if(breakWhile) 24"Trg\WK[
break;
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//count++; 8;;!2>N
//if(count>4) uZ( I|N$
// siteStop(); H];|<G
} R*IO%9O
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System.err.println("文件下载结束!"); ?-0k3
} %)T>Wn%b]v
catch(Exception e){e.printStackTrace ();} ;4tVFqR
} +[*VU2f t
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//获得文件长度 aO('X3?
public long getFileSize() ZB GLwe
{ C
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int nFileLength = -1; )ALPMmlRs
try{ pkpD1c^
URL url = new URL(siteInfoBean.getSSiteURL()); IRNL(9H
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); |WH'aGG
httpConnection.setRequestProperty("User-Agent","NetFox"); b'Qia'a%
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int responseCode=httpConnection.getResponseCode(); &Yi)|TU3'R
if(responseCode>=400) [hA%VF.9
{ "l!WO`.zp=
processErrorCode(responseCode); M3@Wb@
return -2; //-2 represent access is error Hrq1 {3~
} ^]w!ow41
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String sHeader; 24PEt%2
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for(int i=1;;i++) 'HTr02riY
{ sHD8#t^{
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); py.lGywb_
//Utility.log(in.readLine()); /%9D$\
sHeader=httpConnection.getHeaderFieldKey(i); $E3-</ f
if(sHeader!=null) e*p7(b-
{ zWpJ\/k~
if(sHeader.equals("Content-Length")) r2}u\U4>
{ =; Gw=m(
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); %0C<_drW
break; u- PAi5&n
} GZ0?
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} C( 8i0(1
else W[BZ/
break; t!QuM_i3
} jY%&G#4
} 6nh!g
catch(IOException e){e.printStackTrace ();} ;q]Jm
catch(Exception e){e.printStackTrace ();} dfY(5Wc+f
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Utility.log(nFileLength); hc
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return nFileLength; d4KTwn5g
} I
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//保存下载信息(文件指针位置) uKc x$
private void write_nPos() IvGQ7
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{ eqbQ,, &
try{ 0+MNu8t
output = new DataOutputStream(new FileOutputStream(tmpFile)); \MBbZB9@
output.writeInt(nStartPos.length); 2g5i3C.q$
for(int i=0;i<nStartPos.length;i++) HA&7
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{ $U%M]_
// output.writeLong(nPos); Z-|.j^n
output.writeLong(fileSplitterFetch.nStartPos); 0Jz H dz
output.writeLong(fileSplitterFetch.nEndPos); Oxs O
} }a?PBo`
output.close(); 85CH%
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} ~_opU(;f
catch(IOException e){e.printStackTrace ();} aX`"V/
catch(Exception e){e.printStackTrace ();} TI4#A E
} ,5oe8\uz
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//读取保存的下载信息(文件指针位置) (5-
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private void read_nPos() 68Po`_/s
{ nZZNx
try{ JPQWRK^
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); su;u_rc,
int nCount = input.readInt(); G165grGFd
nStartPos = new long[nCount]; 2%|
nEndPos = new long[nCount]; X[/>{rK
for(int i=0;i<nStartPos.length;i++) 0VsQ$4'V^
{ ?>c*[>LpZ
nStartPos = input.readLong(); 6.
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nEndPos = input.readLong(); "fK`F/
} *69{#qN
input.close(); -e<d//>
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catch(IOException e){e.printStackTrace ();} Fp'qn'){:#
catch(Exception e){e.printStackTrace ();} ^X-3YhJ4U
} ,/0Q($oz
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private void processErrorCode(int nErrorCode) GL;@heP
{ 3ARvSz@5
System.err.println("Error Code : " + nErrorCode); Gk_%WY*
} ,=sbK?&
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//停止文件下载 DUH\/<^g
public void siteStop() {UqS q
{ wM.z/r\p
bStop = true; X&C&DTB
for(int i=0;i<nStartPos.length;i++) j("$qpv
fileSplitterFetch.splitterStop(); \H(r }D$u<
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} >,c$e' h
} 8VG6~>ux'>
//负责部分文件的抓取 ^n8ioL\*i
**FileSplitterFetch.java +m?;,JGt
*/ &\<!{Y<'
package NetFox; MJ5Ymt a
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import java.io.*; ,TeJx+z^
import java.net.*; LX<arHz
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public class FileSplitterFetch extends Thread { <JtH/oN
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String sURL; //File URL ]vj.s/F~
long nStartPos; //File Snippet Start Position L1J \C
long nEndPos; //File Snippet End Position /V'^$enK!}
int nThreadID; //Thread's ID U@t"o3E
boolean bDownOver = false; //Downing is over $DPMi9,7^
boolean bStop = false; //Stop identical 8yW 8F26
FileAccessI fileAccessI = null; //File Access interface wyzx9`5~d
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException '?| (QU:)F
{ feJzX*u
this.sURL = sURL; 9Z?P/
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this.nStartPos = nStart; 7D'-^#S5
this.nEndPos = nEnd; /#mq*kNIM6
nThreadID = id; .II*wKk
fileAccessI = new FileAccessI(sName,nStartPos);//定位 b1+6I_u.
} H~Z$ pk%
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public void run() C]@v60I
{
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while(nStartPos < nEndPos && !bStop) }"}
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{ 'Cki"4%<
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try{ a[e&O&Z
URL url = new URL(sURL); hz:^3F`>/&
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); $'Pn(eZHGv
httpConnection.setRequestProperty("User-Agent","NetFox"); q%H`/~AYM
String sProperty = "bytes="+nStartPos+"-"; G.j R
httpConnection.setRequestProperty("RANGE",sProperty); S8=Am7D]1
Utility.log(sProperty); g/*x;d=
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InputStream input = httpConnection.getInputStream(); 7JC^+rk
//logResponseHead(httpConnection); c}XuzgSY
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byte[] b = new byte[1024]; ZD$W>'m{F
int nRead; K&L9Ue
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) NxOiT#YH
{ euxkw]`h6
nStartPos += fileAccessI.write(b,0,nRead); J#k3iE}
//if(nThreadID == 1) '(ZJsw
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Mn)>G36(
} Oup5LH!sW
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Utility.log("Thread " + nThreadID + " is over!"); .`I;qF
bDownOver = true; \o|5/N
//nPos = fileAccessI.write (b,0,nRead); 0wFa7PyG?
} L&D+0p^lI
catch(Exception e){e.printStackTrace ();} =1!,A
} \VL_
} wEQ7=Gyx
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//打印回应的头信息 i|`b2msvd
public void logResponseHead(HttpURLConnection con) Sf_q;Ws
{ _'eG
for(int i=1;;i++) |)%]MK$;
{ [{s 1=c
String header=con.getHeaderFieldKey(i); 4[\$3t.L
if(header!=null) / 7i>0J]
//responseHeaders.put(header,httpConnection.getHeaderField(header)); JPo.&5k
Utility.log(header+" : "+con.getHeaderField(header)); 33R1<dRk
else D)kh"cK*1
break; UJ\[^/t
} {z^6V\O5
} WA'&