/* "3Ec0U \s
**SiteFileFetch.java Nz2}Ma 2
*/ F7mzBrz
package NetFox; wLW!_D,/R
import java.io.*; Wkf)4!
import java.net.*; !I:6L7HdwB
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public class SiteFileFetch extends Thread { z.7 UfLV9
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SiteInfoBean siteInfoBean = null; //文件信息Bean )\t#e`3
long[] nStartPos; //开始位置 .Yo#vV
long[] nEndPos; //结束位置 7n%QP
FileSplitterFetch[] fileSplitterFetch; //子线程对象 W(EU*~<UC
long nFileLength; //文件长度 <>p\9rVp*^
boolean bFirst = true; //是否第一次取文件 $.v5G>-)3
boolean bStop = false; //停止标志 GK:*|jV
File tmpFile; //文件下载的临时信息 d!,V"*S
DataOutputStream output; //输出到文件的输出流 l'c|I
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) c D7q;|+
public SiteFileFetch(SiteInfoBean bean) throws IOException $lUZm\R|k
{ lxV>
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siteInfoBean = bean; Jzh_`jW0l
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 89~) nV)
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ?9/%K45
if(tmpFile.exists ()) oU67<jq
{ AM\`v'I*6
bFirst = false; Z#d_<e?
read_nPos(); m/CA
} GQT|T0>Ro
else ,>e)8
{ 4uD!-1LT@
nStartPos = new long[bean.getNSplitter()]; c}$?k@=
nEndPos = new long[bean.getNSplitter()]; z;1yZ4[G
} ]l`?"X|^
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} PJO +@+"{@
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public void run() Iy\K&)5?
{ H2[S]`?
//获得文件长度 =p ^Sn,t
//分割文件 Q_]O[Kx
//实例FileSplitterFetch jg' 'T1)
//启动FileSplitterFetch线程 dfO84Z}
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//等待子线程返回 iw<+rh*C
try{ WY #pzBA
if(bFirst) iwrS>Sm
{ q>f1V3
nFileLength = getFileSize(); Q;Xb-\\
if(nFileLength == -1) vxY7/ _]
{ [Nsv]Yz
System.err.println("File Length is not known!"); 8+Oyhd*|
} x_AG=5OJX,
else if(nFileLength == -2) {
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{ ,,lrF.
System.err.println("File is not access!"); PudwcP{
} ,\xeNUZd
else 6E85mfFS
{ ' !ZFK}
for(int i=0;i<nStartPos.length;i++) T ^%$
{ px".pYr0
nStartPos = (long)(i*(nFileLength/nStartPos.length)); S"V|BU
} JM@MNS_||(
for(int i=0;i<nEndPos.length-1;i++) mQ:lj$Gf
{ j8_WEjG
nEndPos = nStartPos[i+1]; U2\zl
} ['e8Xz0
nEndPos[nEndPos.length-1] = nFileLength; e%u1O-*
} 9!}&&]Q`
} >Y!5c 2~`;
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//启动子线程 K9:I8E<
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; hZU@35~BN
for(int i=0;i<nStartPos.length;i++) =T|Z[/fto
{ H<Ed"-n$I<
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), rq:R6e
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), /2tgxm$}
nStartPos,nEndPos,i); Xq` '^)
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); cEhwv0f!qS
fileSplitterFetch.start(); 2a3i]e5Kt
} s:~3|D][
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), #0zMPh /U}
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ej4xW~_
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 3T+#d-\
nEndPos = " + nFileLength); /:~mRf^
// fileSplitterFetch[nPos.length-1].start(); _r^Cu.[7
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//等待子线程结束 8fY1~\G:\
//int count = 0; [f!sBJ!
//是否结束while循环 OjcxD5"v9
boolean breakWhile = false; =I-SQI8
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while(!bStop) _
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{ 4en[!*
write_nPos(); ]hJ#%1
Utility.sleep(500); NnRR"'
breakWhile = true; )`, Bt
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for(int i=0;i<nStartPos.length;i++) tg_v\n
{ R/VrBiw
if(!fileSplitterFetch.bDownOver) TyI"fP
{ }'U"HHv
breakWhile = false; /J")S?. [u
break; WPPz/c|j
} 7j8nDX<
} }\!&3^I
if(breakWhile) $<xa "aN!
break; vc0'x4
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//count++; &-mPj82R
//if(count>4) mI_ ?hl?Pv
// siteStop(); iaPrkMhd
} wi-O}*O
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System.err.println("文件下载结束!"); qq9fZZb
} @*`9!K%
catch(Exception e){e.printStackTrace ();} =87.6Ai
} -rb]<FrL^
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//获得文件长度 ?nZQTO7
public long getFileSize() I<PKwT/?
{ -HutEbkjx
int nFileLength = -1; p~1!O]qLt
try{ +KGZk?%
URL url = new URL(siteInfoBean.getSSiteURL()); #+I)<a7\
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ]k
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httpConnection.setRequestProperty("User-Agent","NetFox"); "ph&hd}S
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int responseCode=httpConnection.getResponseCode(); {ULy B$\-
if(responseCode>=400) )`<-
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{ )L fXb9}
processErrorCode(responseCode); %%5K%z,R#
return -2; //-2 represent access is error 6EfGJq
} yU`"]6(@[
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String sHeader; f4eLnY
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for(int i=1;;i++) Z:7X=t=
{ tu{y
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); yyCx;
//Utility.log(in.readLine()); $Pv;>fHu
sHeader=httpConnection.getHeaderFieldKey(i); m/vwM"
if(sHeader!=null) wju2xM
{ $n>|9(K8
if(sHeader.equals("Content-Length")) ?|Y/&/;%I
{ o0t/
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); C QO gR GW
break; YbjeM6#E
} BIyNiol$AJ
} S^ij %
else ZtG5vdf
break; =gL~E9\
} fS2 ^$"B|
} k=L(C^VP
catch(IOException e){e.printStackTrace ();} :y#KR\T1
catch(Exception e){e.printStackTrace ();} <7Igd6u
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Utility.log(nFileLength); AWSe!\b
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return nFileLength; 3%c{eZxG=
} 9nIBs{`/Ac
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//保存下载信息(文件指针位置) NgH"jg-
private void write_nPos() eF)vx{s
{ DSiI%_[Ud
try{ e+J|se4L5
output = new DataOutputStream(new FileOutputStream(tmpFile)); p<hV7x-{
output.writeInt(nStartPos.length); 'U=D6X%V9m
for(int i=0;i<nStartPos.length;i++) A'(v]w
{ {p#[.E8
// output.writeLong(nPos); Okd?=*sBx
output.writeLong(fileSplitterFetch.nStartPos); -UgD
output.writeLong(fileSplitterFetch.nEndPos); pi`sx[T@{Z
} =+@Ip Xj
output.close(); 5\1C@d
} B1\@ n$
catch(IOException e){e.printStackTrace ();} W
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catch(Exception e){e.printStackTrace ();} 2x3'm
} CYlZ<