/* gM|X":j
**SiteFileFetch.java bA#E8dlC_
*/ CORNN8=k
package NetFox; }#@P+T:b
import java.io.*; WU1I>i
import java.net.*; (,\`?g
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public class SiteFileFetch extends Thread { 2vKnxK+ 5
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SiteInfoBean siteInfoBean = null; //文件信息Bean Ai iOs?
long[] nStartPos; //开始位置 aisX56Lc
long[] nEndPos; //结束位置 hB<.u
FileSplitterFetch[] fileSplitterFetch; //子线程对象 nM8aC&Rd\
long nFileLength; //文件长度 Dbyy H_
boolean bFirst = true; //是否第一次取文件 NVFAmX.Z:
boolean bStop = false; //停止标志 <2y~7h:
File tmpFile; //文件下载的临时信息 ^~MHxF5d
DataOutputStream output; //输出到文件的输出流 'rf='Y
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) =fBJQK2sk
public SiteFileFetch(SiteInfoBean bean) throws IOException zE.4e&m%Z?
{ {NE;z<,*:
siteInfoBean = bean; 9>le-}~
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); }W<]fK
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); >C_! }~
if(tmpFile.exists ()) f%*-PW^*
{ ]-{T-*h:
bFirst = false; V0JoUyZ
read_nPos(); CNcH)2Mk
} nC`#Hm.V%
else 6?}8z
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nStartPos = new long[bean.getNSplitter()]; r~nrP=-%
nEndPos = new long[bean.getNSplitter()];
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} >E"FoZM=
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public void run() lu-VBVwR
{ :g<dwuVO
//获得文件长度 tvRa.3
//分割文件 "cJ5Fd:*
//实例FileSplitterFetch 0?,EteR
//启动FileSplitterFetch线程 HdWghxz?)
//等待子线程返回 L1)?5D
try{ 'U}i<^,c
if(bFirst) 8Qu].nKe
{ 8agd{bxU
nFileLength = getFileSize(); l`$f@'k
if(nFileLength == -1) gWgK
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System.err.println("File Length is not known!"); `q_7rrkO
} (nda!^f_s
else if(nFileLength == -2) "{{xH*ij'
{ =t)eT0
System.err.println("File is not access!"); >y]YF3?
} 9@D,ZSi
else &Vgjd>
{ NJl|/(]v
for(int i=0;i<nStartPos.length;i++) @Gn9x(?J
{ Fd'Ang6"
nStartPos = (long)(i*(nFileLength/nStartPos.length)); )sNtwSl^
} "t_] Qu6
for(int i=0;i<nEndPos.length-1;i++) gn(n</\/O
{ ITbl%q
nEndPos = nStartPos[i+1]; 2?
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} 8KoPaq
nEndPos[nEndPos.length-1] = nFileLength; =~aJ]T}(
} O4$:
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} 2! wz#EC
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//启动子线程 ,9+@\
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; _'j>xK
for(int i=0;i<nStartPos.length;i++) G0*$&G0nb
{ C!Tl?>Tt
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), e[e2X<&0RT
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Uc9Uj
nStartPos,nEndPos,i); I|R9@
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ]i$CE|~
fileSplitterFetch.start(); UJ6WrO5#kB
} 'Z&A5\~
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), t5e(9Yhj
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); r2&{R!Fj`
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Bq@G@Qi
nEndPos = " + nFileLength); $\P!P.
// fileSplitterFetch[nPos.length-1].start(); has5"Bb
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//等待子线程结束 &$+yXN
//int count = 0; eN jC.w9
//是否结束while循环 TUk1h\.q
boolean breakWhile = false; 7x1jpQ-
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while(!bStop) 3cOXtDV YT
{ 8o4
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write_nPos(); ^AEg?[q
Utility.sleep(500); ].1R~7b
breakWhile = true; fitm*
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for(int i=0;i<nStartPos.length;i++) ("9)=x *5
{ 'vCFT(C-
if(!fileSplitterFetch.bDownOver) N:&Gv'`
{ n
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breakWhile = false; xwz2N5
break; cPtP?)38.
} L:%h]-
} %F{@DN`
if(breakWhile) ;xj^*b
break; ~w!<J-z)
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//count++; {cG&l:-r
//if(count>4) ZB%7Sr0
// siteStop(); HF0J>Clq
} rgOB0[
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System.err.println("文件下载结束!"); Q4Cw{2r
} t/y0gr tm6
catch(Exception e){e.printStackTrace ();} 58=fT1
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} ;H}?8L
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//获得文件长度 X\flx~
public long getFileSize() ^IC|3sr
{ xe_c`%_
int nFileLength = -1; ^#_@Kq%th
try{ n.Ekpq\
URL url = new URL(siteInfoBean.getSSiteURL()); i5:fn@&
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 4S+P]U*jW
httpConnection.setRequestProperty("User-Agent","NetFox"); LnM+,cBz
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int responseCode=httpConnection.getResponseCode(); C
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if(responseCode>=400) rw58bkh6
{ B6|=kl2C
processErrorCode(responseCode); hXZk$a'
return -2; //-2 represent access is error tX6n~NJ$
} ]BX|G`CCc
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String sHeader; ALPZc:
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for(int i=1;;i++) F DXAe-|Q
{ qJrK?:O;
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 4fQ<A <2/
//Utility.log(in.readLine()); Z+FJ cvYx
sHeader=httpConnection.getHeaderFieldKey(i); ".~,(*
if(sHeader!=null) k${25*M!3
{ a$"3T
if(sHeader.equals("Content-Length")) E ekX|*
{ X`#vH8
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); <D!"<&N