/* vl#/8]0!
**SiteFileFetch.java E|>I/!{u7`
*/ ql#K72s
package NetFox; h %nZKhm
import java.io.*; !hq7R]TC+
import java.net.*; |0&S>%=
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public class SiteFileFetch extends Thread { vmoqsdZ/
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SiteInfoBean siteInfoBean = null; //文件信息Bean
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long[] nStartPos; //开始位置 IOA{lN6
long[] nEndPos; //结束位置 4nY2v['m0
FileSplitterFetch[] fileSplitterFetch; //子线程对象 GB+G1w
long nFileLength; //文件长度 ESs)|t h
boolean bFirst = true; //是否第一次取文件 h*d,AJz &.
boolean bStop = false; //停止标志 yR`-rJb V
File tmpFile; //文件下载的临时信息 ~DJ/sY2/
DataOutputStream output; //输出到文件的输出流 ;'h7
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) %=]{~5f>
public SiteFileFetch(SiteInfoBean bean) throws IOException L^=>)\R2$[
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siteInfoBean = bean; '.iUv#j4Sh
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); EgY]U1{
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); PQfx0n,
if(tmpFile.exists ()) v uJ~Lg{
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bFirst = false; u4S3NLG)
read_nPos(); dlWw=^
} D1w_Vpz
else :>,d$f^tqE
{ 3{%/1>+x5
nStartPos = new long[bean.getNSplitter()]; D\k);BU~
nEndPos = new long[bean.getNSplitter()]; H(pOR<`
} 0trFLX
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} HP7Ec
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public void run() 9A6ly9DIS
{ 83S],L
//获得文件长度 iw#luHcJ
//分割文件 I*#~@:4*
//实例FileSplitterFetch pG"
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//启动FileSplitterFetch线程 Ad"::&&Wk
//等待子线程返回 $)'{+1
try{ vOqYt42
if(bFirst) 97
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{ eSvu:euv
nFileLength = getFileSize(); eZUK<&0x5
if(nFileLength == -1) UL oTPx@N
{ N%T-Q9k
System.err.println("File Length is not known!"); 'aCnj8B
} _-D(N/
else if(nFileLength == -2)
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{ ALKhZFuz
System.err.println("File is not access!"); (Q@m;i>
} im&|H-
else M0^r!f>O
{ 0]" j,
for(int i=0;i<nStartPos.length;i++) 6Fm.^9@
{ Jus)cO#I
nStartPos = (long)(i*(nFileLength/nStartPos.length)); XL+kEZ|3
} P[Qr[74)
for(int i=0;i<nEndPos.length-1;i++) 9
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{ :!3P4?a
nEndPos = nStartPos[i+1]; 0[PP-]JS
} 9_HEImk
nEndPos[nEndPos.length-1] = nFileLength; H(0d(c1s
} Vbwbc5m}
} ^@6eN]
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//启动子线程 k_!z=6?[:
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; c*3ilMP\4
for(int i=0;i<nStartPos.length;i++) D0(gEb
{ C&"8A\we
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), [%b<%m}L-
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 87*R#((
nStartPos,nEndPos,i); s&c^Wr
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); |C5i3?
fileSplitterFetch.start(); !x,3k\M
} AKS(WNGEp
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), BG'gk#J+f
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); %`` FIv15w
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", `E}2|9
nEndPos = " + nFileLength); ']qC,;2
// fileSplitterFetch[nPos.length-1].start(); 2)U3/TNe
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//等待子线程结束 +8~S28"Wg3
//int count = 0; R
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//是否结束while循环 ~M <4HC
boolean breakWhile = false; +wQGC
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while(!bStop) (=p}b:Z
{ *yt/
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write_nPos(); I{M2nQi
Utility.sleep(500); H-I*;
breakWhile = true; Ue8_Q8q5
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for(int i=0;i<nStartPos.length;i++) f(9w FT
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if(!fileSplitterFetch.bDownOver) +|o-lb
{ ysL8w"t
breakWhile = false; [TNYPA>{
break; [t ^|l?
} `5>IvrzXrK
} XbHcd8N T
if(breakWhile) Bw{W-&$o
break; &qo'ge8p
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//count++; ~L?p/3m
//if(count>4) t[3Upe%
// siteStop(); 8^M5u>=t;
} S-v9z:M3
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System.err.println("文件下载结束!"); 8fdOV&&D~i
} XLM 9+L
catch(Exception e){e.printStackTrace ();} S:DB%V3
} 0`OqD d
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//获得文件长度 q/]tJ{FI
public long getFileSize() <nIU]}q
{ &npf
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int nFileLength = -1; CNP?i(Rk
try{ q.MM|;_u`
URL url = new URL(siteInfoBean.getSSiteURL()); FmnA+fA
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); S>**hMU%
httpConnection.setRequestProperty("User-Agent","NetFox"); HI:E&20y
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int responseCode=httpConnection.getResponseCode(); az`5{hK
if(responseCode>=400) 15 SIZ:Q
{ CIV6Qe"<
processErrorCode(responseCode); '"I"D9;9
return -2; //-2 represent access is error O1/!)E!
} @^`-VF
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String sHeader; HLk/C[`u,
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for(int i=1;;i++) ,(lD5iN
{ bXt A4O
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); K)^.96{/@
//Utility.log(in.readLine()); j8N8|\n-
sHeader=httpConnection.getHeaderFieldKey(i); fDqlN`P@
if(sHeader!=null) smk0 *m4
{ qo'pU/@
if(sHeader.equals("Content-Length")) 23Eg|Xk
{ +y -:(aP
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); :<nL9y jt
break; R$PiF1ffj
} eYS
} CVu'uyy
else @ '<lD*W
break; ULsz<Hj
} ~PS%^zxyn
} vR:t4EJ`
catch(IOException e){e.printStackTrace ();} q!NwfXJM
catch(Exception e){e.printStackTrace ();} Ndx='j0
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Utility.log(nFileLength); [rGR1>U?i
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return nFileLength; ]%NCKOM
} ]>x674H
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//保存下载信息(文件指针位置) AvH/Q_-b
private void write_nPos() Qa"R?dfr
{ pQW^lqwZ:6
try{ W6]iJ
output = new DataOutputStream(new FileOutputStream(tmpFile)); b$g.">:$
output.writeInt(nStartPos.length); :Rq@ %rL
for(int i=0;i<nStartPos.length;i++) f61~%@fE
{ b/E1v,/<
// output.writeLong(nPos); S0kH/A
output.writeLong(fileSplitterFetch.nStartPos); [_b10Z'{
output.writeLong(fileSplitterFetch.nEndPos); SkN^ytKE
} JB**z00;
output.close(); y:pypuwt;
} Be?mIwc_g
catch(IOException e){e.printStackTrace ();} ,P5HR+h
catch(Exception e){e.printStackTrace ();} -@AGQ+e
} 6`%}s3Xq
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//读取保存的下载信息(文件指针位置) "BEU%,w
private void read_nPos() C%G-Ye|@
{ [<OMv9(l'o
try{ }8 ,b;Q
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); l$PO!JRD
int nCount = input.readInt(); |RHX2sso
nStartPos = new long[nCount]; $8X?|fV)
nEndPos = new long[nCount]; vChkSY([
for(int i=0;i<nStartPos.length;i++) @p}H@#/u\
{ 92eS*x2@
nStartPos = input.readLong(); *FOTq'%i
nEndPos = input.readLong(); #]n[
} TS@EE&W