/* W>K^55'
**SiteFileFetch.java T5S4,.o9W
*/ Yj%]|E-
package NetFox; a.Ho>(V/4
import java.io.*; ^*K=wE}AG
import java.net.*; ]&cnc8tC
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public class SiteFileFetch extends Thread { 1Kg0y71"
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SiteInfoBean siteInfoBean = null; //文件信息Bean L, JQ\!c
long[] nStartPos; //开始位置 ?'a8QJo
long[] nEndPos; //结束位置 JMb_00r
FileSplitterFetch[] fileSplitterFetch; //子线程对象 dftBD
long nFileLength; //文件长度 s]arNaaA
boolean bFirst = true; //是否第一次取文件 x:Y9z_)O
boolean bStop = false; //停止标志 ;G[V:.o-
File tmpFile; //文件下载的临时信息 22gh!F%)
DataOutputStream output; //输出到文件的输出流 j[>cv;h
;
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) y0zMK4b
public SiteFileFetch(SiteInfoBean bean) throws IOException +P/kfY"
{ wP!X)p\
siteInfoBean = bean; p3Sh%=HE'
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); A#{63_H
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); bsIG1&n'T
if(tmpFile.exists ()) IhnBp 6p9
{ p_FM 2K7!
bFirst = false; nhV"V`|d
read_nPos(); wQ}r/2n|^
} RBX<>*
else #[93$)Gd!
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nStartPos = new long[bean.getNSplitter()]; i5,iJe0cA
nEndPos = new long[bean.getNSplitter()]; ).T&fa"
} >=~\b
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public void run() 0RUk^
{ 6Rc=!_v^
//获得文件长度 Knq9"k
//分割文件 i?00!t
//实例FileSplitterFetch / f%mYL
//启动FileSplitterFetch线程 yI0bSu<j-
//等待子线程返回 K/Q"Z*
try{ _(W@FS
if(bFirst) Dg&84,bv^
{ #6`5-5Ks;
nFileLength = getFileSize(); P3M$&::D-
if(nFileLength == -1) Fn4v/)*H
{ 04a
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System.err.println("File Length is not known!"); f5jl$H.
} JF~i.+{h
else if(nFileLength == -2) u-_r2U
{ Gp"GTPT{
System.err.println("File is not access!"); ?J}Q&p.
} c_lHj#A(l
else )>volP
{ {SoI;o_>
for(int i=0;i<nStartPos.length;i++) v4$/LUJZp
{ UKS5{"=T[
nStartPos = (long)(i*(nFileLength/nStartPos.length)); #c"eff
} lC i{v.
for(int i=0;i<nEndPos.length-1;i++) mU'<:gL+
{ m[hL
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nEndPos = nStartPos[i+1]; %!aU{E|@_
} lu8G$EQI
nEndPos[nEndPos.length-1] = nFileLength; rfXxg^
} 12$0-@U
} >)><u4}
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//启动子线程 JA^o/%a^
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ^X#y'odtbS
for(int i=0;i<nStartPos.length;i++) ]
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{ +v~xgUs
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ! 'zd(kv<
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), T$Z9F^w
nStartPos,nEndPos,i); TpjiKM
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); y^.66BH
fileSplitterFetch.start(); *}[\%u$ T
} }Zhe%M=}G
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), RLF&-[mr3
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); x4_IUIgh
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", qJey&_
nEndPos = " + nFileLength); }@DCc f$<
// fileSplitterFetch[nPos.length-1].start(); v.0qE}'
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//等待子线程结束 kA:Y^2X'
//int count = 0; Fs+tcr/\[
//是否结束while循环 O
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boolean breakWhile = false; @W,jy$U
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while(!bStop) yR}.Xq/
{ {U4!sJSl1
write_nPos(); /dnwN7Gf
Utility.sleep(500); `e[S Zj\
breakWhile = true; Q>niJ'7WF
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for(int i=0;i<nStartPos.length;i++) [%W'd9`>
{ Ufr@j` *
if(!fileSplitterFetch.bDownOver) ^r}c&@
{ ?R`S-
breakWhile = false; ggso9ZlLu+
break; WBe0^=x
} FO{=^I5YA
} 1 ZdB6U0
if(breakWhile) PKm|?kn{0(
break; $l.*;h *
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//count++; cNll??j
//if(count>4) `oRyw6Sko
// siteStop(); h~dQ5%
}
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System.err.println("文件下载结束!"); 8|&,JdT
} qGk+4 yC
catch(Exception e){e.printStackTrace ();} R2bq hSlF
} Im]@#X
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//获得文件长度 K#"=*p,
public long getFileSize() u@a){A(P
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int nFileLength = -1; @T1G#[C~t
try{
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URL url = new URL(siteInfoBean.getSSiteURL()); UpoSC
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); -@Ap;,=
httpConnection.setRequestProperty("User-Agent","NetFox"); Y,]Lk<Hm3
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int responseCode=httpConnection.getResponseCode(); ?0qVyK_1
if(responseCode>=400) xC76jE4
{ 0TN28:hcD
processErrorCode(responseCode); (P>nA3:UXB
return -2; //-2 represent access is error *,u3Wm|7
} cXweg;
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String sHeader; 7lC$UQ x8
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for(int i=1;;i++) Ku5||u.F4*
{ X'A`"}=_
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Bwg(f_[1
//Utility.log(in.readLine()); uHbg&eW
sHeader=httpConnection.getHeaderFieldKey(i); ixTjXl2g
if(sHeader!=null) jCd]ENl+_
{ VFE@qX|
if(sHeader.equals("Content-Length")) |3$Ew.
{ J+D|/^
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); "O$bq::(]e
break; l5z//E}W
} _{|a<Keq|
} W]4Z4&