/* 5^|"_Q#:
**SiteFileFetch.java p+D=}O
*/ u`p_.n:5)
package NetFox; 1jOKcm'#
import java.io.*; Qk7J[4
import java.net.*; v!!;js^
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public class SiteFileFetch extends Thread { Y2vj}9jK
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SiteInfoBean siteInfoBean = null; //文件信息Bean &
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long[] nStartPos; //开始位置 _sm;HH7'*
long[] nEndPos; //结束位置 4Bo<4 4-,
FileSplitterFetch[] fileSplitterFetch; //子线程对象 C
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long nFileLength; //文件长度 o>K &D$J;O
boolean bFirst = true; //是否第一次取文件 DrFu r(=T
boolean bStop = false; //停止标志 3jg'1^c
File tmpFile; //文件下载的临时信息 y1Z1=U*!
DataOutputStream output; //输出到文件的输出流 GXEcpc08
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 4f
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public SiteFileFetch(SiteInfoBean bean) throws IOException :tlE`BIp
{ @{bb'q['@
siteInfoBean = bean; 5h(jeT8"
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); u7(];
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); =f4<({9
if(tmpFile.exists ()) h+xA?[c=
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bFirst = false; B<C&ay
read_nPos(); /.2u.G
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else :s-EG;.
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nStartPos = new long[bean.getNSplitter()]; y;,y"W
nEndPos = new long[bean.getNSplitter()]; OgTSx
} _]EyEa
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} 1(#RN9
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public void run() 9^p32G
{ @jKDj]\
//获得文件长度 ,N0uR@GN
//分割文件 )8bFGX7|
//实例FileSplitterFetch !3QRzkJX~
//启动FileSplitterFetch线程 c G*(C
//等待子线程返回 5Fr;
try{ A ~XOK;sB
if(bFirst) >.LgsMRIKi
{ RCQAtBd
nFileLength = getFileSize(); /+N|X
if(nFileLength == -1) >.n;mk
{ ennR@pg
System.err.println("File Length is not known!"); ?Oqzd$-
} V 1*Ad
else if(nFileLength == -2) 44Q9 *."
{ U~CdU
System.err.println("File is not access!"); ki`8(u6l
} H)`@2~Y
else yz8-&4YRNd
{ J2'W =r_#
for(int i=0;i<nStartPos.length;i++) ,y{0bq9*2
{
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); CQ$::;
} /M]eZ~QKD
for(int i=0;i<nEndPos.length-1;i++) k*OvcYL1A
{ %`eJ66T
nEndPos = nStartPos[i+1]; /Ht/F)&P
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nEndPos[nEndPos.length-1] = nFileLength; @~s~/[
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} RA}U#D:$i
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//启动子线程 k)|'JDm
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ZWFG?8lJ
for(int i=0;i<nStartPos.length;i++) #n=A)#'my
{ [f=.!\0\
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), {v,{x1
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), })KJ60B
nStartPos,nEndPos,i); 5Yn{?r\#F
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ,TEuM|
fileSplitterFetch.start(); @W#fui<<}Y
} LSSW.Oz2L
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), %V31B\]Nz7
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); L
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// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Ut]2` 8-
nEndPos = " + nFileLength); 6zv;lx0<D&
// fileSplitterFetch[nPos.length-1].start(); amMjuyW
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//等待子线程结束 "havi,m
//int count = 0; ob)Q,;8R
//是否结束while循环 D DQs42[
boolean breakWhile = false; sw [oQ!f
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while(!bStop) 1B6C<cL:sU
{ 8~.iuFp
write_nPos(); ';&0~ [R[
Utility.sleep(500); .N/GfR`0/<
breakWhile = true; |O57N'/
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for(int i=0;i<nStartPos.length;i++) xLe
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{ B*y;>q "{U
if(!fileSplitterFetch.bDownOver) h (qshbC}
{ 0{-`Th+h
breakWhile = false; #fwzFS \XL
break; Ica3
} mm_^gQ,`
} xIM8
if(breakWhile) =Na/3\^WP
break; *e%Dg{_
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//count++; 5.O-(eSa0&
//if(count>4) 2dXU0095
// siteStop(); ;0;3BH A
} "fRlEO[9
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System.err.println("文件下载结束!"); XI]OA7Zis
} Y_$^:LG
catch(Exception e){e.printStackTrace ();} =
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} &1*4%N@'
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//获得文件长度 c =jcvDQ6W
public long getFileSize() NR;q`Xe-
{ '&N: S-
int nFileLength = -1; 2_Pz^L
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URL url = new URL(siteInfoBean.getSSiteURL()); N
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); BHF{-z
httpConnection.setRequestProperty("User-Agent","NetFox"); 2^cAK t6bC
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int responseCode=httpConnection.getResponseCode(); 's =Q.s
if(responseCode>=400) `kqT{fs
{ d|>9rX+f
processErrorCode(responseCode); c zZrP"
return -2; //-2 represent access is error se~ *<5
} :|?~B%-p[
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String sHeader; Tf9&,!>V
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for(int i=1;;i++) mw:3q6
{ )W[KD,0+j
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); QV`X?m
//Utility.log(in.readLine()); OI'uH$y
sHeader=httpConnection.getHeaderFieldKey(i); u86J.K1Q
if(sHeader!=null) g ^D)x[
{ JOA%Y;`<#
if(sHeader.equals("Content-Length")) :X3rd|;kc
{ \%w7D6dEZ
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); \B*k_W/r@
break; #rh0r`
} {fAh@:{@
} (jp1; #P!
else xnl<<}4pJ
break; {;]uL`abi?
} :`{9x%o;
} *raIV]W3
catch(IOException e){e.printStackTrace ();} #cw!
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catch(Exception e){e.printStackTrace ();} nvU+XCx
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Utility.log(nFileLength); [37f#p
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return nFileLength; #gxRTx
} 1.hOE>A%
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//保存下载信息(文件指针位置) ~*66 3pA
private void write_nPos() |usnY
{ XS}Zq4H
try{ <ol$-1l#9
output = new DataOutputStream(new FileOutputStream(tmpFile)); /.pa
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output.writeInt(nStartPos.length); ^ %~Et>C
for(int i=0;i<nStartPos.length;i++) 3&.TU5]`-
{ FiV^n6-F`
// output.writeLong(nPos); >GdLEE'w
output.writeLong(fileSplitterFetch.nStartPos); 9`LU=Xv/
output.writeLong(fileSplitterFetch.nEndPos); 7VEt4
} Ig40#pA
output.close(); E'S<L|A/
} 8.Pcr<