/* D}Sww5ZmP
**SiteFileFetch.java 3 FV -&Y
*/ l>KkAA
package NetFox; GxEShSGOE
import java.io.*; 6@eF|GoP
import java.net.*; {8h[Bd
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public class SiteFileFetch extends Thread { 5{bc&?"
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SiteInfoBean siteInfoBean = null; //文件信息Bean !F.h+&^D;
long[] nStartPos; //开始位置 T5z]=Pd"^
long[] nEndPos; //结束位置 }1W@
FileSplitterFetch[] fileSplitterFetch; //子线程对象 {Ay dt8
long nFileLength; //文件长度 %D5F7wB
boolean bFirst = true; //是否第一次取文件 @\o"zU
boolean bStop = false; //停止标志 6?;z\AP&
File tmpFile; //文件下载的临时信息 aYDo0?kF'
DataOutputStream output; //输出到文件的输出流 t"Ah]sD
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Fk^N7EJ:$
public SiteFileFetch(SiteInfoBean bean) throws IOException !&9(D^
{ .6xMLo,R
siteInfoBean = bean; mEsb_3?#+
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Od)y4nr3~
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); {ywwJ
if(tmpFile.exists ()) 8|)^m[c&
{ *BdH
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bFirst = false; x7U=1y(
read_nPos(); P_w4
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} w"wW0uE^
else fBj)HoHQW
{ I<ohh`.
nStartPos = new long[bean.getNSplitter()]; kDMvTVd
nEndPos = new long[bean.getNSplitter()]; IEMa/[n/
} sQac%.H;`U
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} 8hD[z}
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public void run() V<J1.8H
{ bo/9k 4N3
//获得文件长度 %,_ZVgh0
//分割文件 2&>t,;v@
//实例FileSplitterFetch C| ~A]wc=
//启动FileSplitterFetch线程 ~x\uZ^:
//等待子线程返回 >&KH!:OX|
try{ 9<.O=-1~
if(bFirst) [
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nFileLength = getFileSize(); E|"SMA,
if(nFileLength == -1) KE~Q88s
{ i7XY3yhC
System.err.println("File Length is not known!"); M7cD!s@'I
} g"1V]
else if(nFileLength == -2) Sv{n?BYq
{ EXCE^Vw
System.err.println("File is not access!"); #Az#_0=
} k`8O/J
else 5MaN
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for(int i=0;i<nStartPos.length;i++) z&amYwQcI
{ tr[}F7n9
nStartPos = (long)(i*(nFileLength/nStartPos.length)); AAlc %d/9
}
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for(int i=0;i<nEndPos.length-1;i++) rM,e$
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nEndPos = nStartPos[i+1]; E5n7
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nEndPos[nEndPos.length-1] = nFileLength; ]O"f %
} r6Yd"~ n
} I"88O4\@
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//启动子线程 at_*Zh(
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; G|rE\h 2w
for(int i=0;i<nStartPos.length;i++) 5p[}<I{
{ LUMbRrD-
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), PlzM`g$A
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), CW
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nStartPos,nEndPos,i); *#XZ*Ga
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); PR.3EL
fileSplitterFetch.start(); 2F:qaz
} ~V8z%s@
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), )y,^M3$?C
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 2Cz haO
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", \"a{\E,{;
nEndPos = " + nFileLength); M,]|L c h
// fileSplitterFetch[nPos.length-1].start(); QM0B6F
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//等待子线程结束 JI5o~;}m
//int count = 0; @(,1}3s
//是否结束while循环 LORcf 1X/
boolean breakWhile = false; 8F}drK9>F
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while(!bStop) YExgUE|
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write_nPos(); h !^=
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Utility.sleep(500); Tlw'05\{J
breakWhile = true; =fcg4h5(
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for(int i=0;i<nStartPos.length;i++) 4@PA+(kvS
{ yH/A9L,Z
if(!fileSplitterFetch.bDownOver) |\,OlX,
{ RxP H[7oZ
breakWhile = false; -'&/7e6>y
break; <CyU9`ye
} za_b jE
} N6Mr#A-{
if(breakWhile) X94a
break; !zA@{gvEc
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//count++; ORExI.<`W
//if(count>4) ;k <dp7^
// siteStop(); cM#rus?)+
} =XP[3~
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System.err.println("文件下载结束!"); =oBpS=<7
} 7r:h_r-
catch(Exception e){e.printStackTrace ();} 8u[_t.y4m
} SMN.AJ
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//获得文件长度 H"A%mrb
public long getFileSize() zHJCXTM
{ -k'<6op
int nFileLength = -1; (80m'.X
try{ vSgT36ZF
URL url = new URL(siteInfoBean.getSSiteURL()); o<G 9t6~
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); qN!oN*
httpConnection.setRequestProperty("User-Agent","NetFox"); GY~$<^AK
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int responseCode=httpConnection.getResponseCode(); |2(q9j
if(responseCode>=400) - x
{ RZa/la*
processErrorCode(responseCode); {;yO3];Hqw
return -2; //-2 represent access is error t>j_C{X1(
} ].d2C J'
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String sHeader; hkMeUxS
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for(int i=1;;i++) }3Es&p$9
{ ({uW-%
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Kd\0nf6
//Utility.log(in.readLine()); }k^uup*{
sHeader=httpConnection.getHeaderFieldKey(i); =ZgueUz,
if(sHeader!=null) i)i>Ulj*i
{ 3[m~-8
if(sHeader.equals("Content-Length")) &[E\2 E
{ X~{6$J|]#i
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); WgNA%.|,
break; @Z5q2Q
} `4"8@>D
} 8lyIL^
else Ot=>~(u0
break; oF%m
} ^C>kmo3J
} {R1]tGOf
catch(IOException e){e.printStackTrace ();} |$Yk)z3
catch(Exception e){e.printStackTrace ();} IwyA4Ak Ru
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Utility.log(nFileLength); +B? qx
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return nFileLength; oo'9ZE/%
}
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//保存下载信息(文件指针位置) N_Us6X
private void write_nPos() g~U(w
{ ETDWG_H |
try{ kWzp*<lWe
output = new DataOutputStream(new FileOutputStream(tmpFile)); Z-@nXt
output.writeInt(nStartPos.length);
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for(int i=0;i<nStartPos.length;i++) 2BccE
{ 6-U_TV
// output.writeLong(nPos); +Mj6.X
output.writeLong(fileSplitterFetch.nStartPos); %i9S"
output.writeLong(fileSplitterFetch.nEndPos); o/AG9|()4
} x@#>l8k?
output.close(); /|EdpHx0
} Nd(,oXa~
catch(IOException e){e.printStackTrace ();} vC]X>P5 Px
catch(Exception e){e.printStackTrace ();} 6h9(u7(-N
} H,>
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//读取保存的下载信息(文件指针位置) ,%pCcM)
private void read_nPos() @A[)\E1
{ C4m+Ta%
try{ b(K"CL\p
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); F^l1WX6
int nCount = input.readInt(); Nl\`xl6y]
nStartPos = new long[nCount]; ;4O[/;i
nEndPos = new long[nCount]; LnR>!0:c
for(int i=0;i<nStartPos.length;i++) Du_5iuMh
{ V]zZb-m=
nStartPos = input.readLong(); *Y> w0k
nEndPos = input.readLong(); ! ._q8q\
} rWht},-|1
input.close(); CE"/&I
} UyGo0POW
catch(IOException e){e.printStackTrace ();} (cj9xROx
catch(Exception e){e.printStackTrace ();} J|WE&5'
} '_v~+
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