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**SiteFileFetch.java 9oc_*V0<
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package NetFox; L3\#ufytb
import java.io.*; ZbT$f^o}M]
import java.net.*; *yT>
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public class SiteFileFetch extends Thread { Ci-Ze j
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SiteInfoBean siteInfoBean = null; //文件信息Bean A^).i_
long[] nStartPos; //开始位置 '8)kFR^9
long[] nEndPos; //结束位置 8'@5X-nD
FileSplitterFetch[] fileSplitterFetch; //子线程对象 =M-=94
long nFileLength; //文件长度 F&!vtlV)
boolean bFirst = true; //是否第一次取文件 ]CLM'$
boolean bStop = false; //停止标志 toGd;2rl
File tmpFile; //文件下载的临时信息 ?0:]%t18
DataOutputStream output; //输出到文件的输出流 t!3s@
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Y)/|C7~W
public SiteFileFetch(SiteInfoBean bean) throws IOException %bTuE' `b
{ 4Lg
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siteInfoBean = bean; sDNWB_~
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 9l~D}5e7
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); r}qDvC D
if(tmpFile.exists ()) 1A'eH:$
{ g(i6Uj~)
bFirst = false; g|uyQhsg
read_nPos(); ^X{U7?x
} `>UUdv{C
else >z%YKdq
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nStartPos = new long[bean.getNSplitter()]; +0U=UV)U
nEndPos = new long[bean.getNSplitter()]; =| T ^)J
} mOj; 0 R
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public void run() (<>??(VM
{ XgX~K:<jt
//获得文件长度 Hre&a!U
//分割文件 <o|fH~?X
//实例FileSplitterFetch c6 &k?Puy
//启动FileSplitterFetch线程 rzHBop-8
//等待子线程返回 rK'Lvt@w
try{ b||usv[or
if(bFirst) o@gceZuk
{ #pPOQv:~
nFileLength = getFileSize(); (bv{17K
if(nFileLength == -1) :@jctH~
{ %ZD]qaU0
System.err.println("File Length is not known!"); W7A!QS
} Ox#vW6;)
else if(nFileLength == -2) uQc("F
{ F-zIzzb&O
System.err.println("File is not access!"); v#{Nh8n
} U -OD
else ^G`6Zg;
{ l4i51S"
for(int i=0;i<nStartPos.length;i++) >vo 6X]p~
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); |dEPy-Xe
} o_Z9\'u
for(int i=0;i<nEndPos.length-1;i++)
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{ ?"
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nEndPos = nStartPos[i+1]; |Q)mBvvN
} *#>(P
nEndPos[nEndPos.length-1] = nFileLength; '.z7)n
} @2.
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} %dnpO|L
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//启动子线程 Nb:j]U
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; AJ>E\DK0]
for(int i=0;i<nStartPos.length;i++) c-JXWNz
{ Dks n
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Drtg7v{@\
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), OKm,iIp]
nStartPos,nEndPos,i); ?bM%#x{e
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Wjq9f;
fileSplitterFetch.start(); ;"IWm<]h;-
} Uv[a
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// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ($`IHKF1.l
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); _Ycz@Jn
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ;taZixOH
nEndPos = " + nFileLength); XdThl
// fileSplitterFetch[nPos.length-1].start(); 7#+Ih-&EQ
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//等待子线程结束 k-3;3Mq
//int count = 0; aNKw.S>
//是否结束while循环 5@1h^wv
boolean breakWhile = false; *JX$5bZsI
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while(!bStop) l=9D!64
{ ]t!v`TH
write_nPos(); <2@t~9
Utility.sleep(500); 6R^F^<<
breakWhile = true; l-W)?d
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for(int i=0;i<nStartPos.length;i++) ^k%+ao
{ Ht+ro Y
if(!fileSplitterFetch.bDownOver) < w}i
{ lwt,w<E$
breakWhile = false; I`XOvSO
break; -"ZNkC=
} mY"Dw^)
} 6{i0i9Tb
if(breakWhile) `f}ZAX
break; !-T#dU
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//count++; Y_faqmZ9]
//if(count>4) =>PX~/o
// siteStop(); -SD:G]un
} jA?[*HB
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System.err.println("文件下载结束!"); :|k!hG
} hoBFC1
catch(Exception e){e.printStackTrace ();} l+6@,TY1U
} 4J,6cOuW4
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//获得文件长度 Eyf17
public long getFileSize() 74
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{ 0P$19TN
int nFileLength = -1; XdIno}pN
try{ 8bMw.u=F
URL url = new URL(siteInfoBean.getSSiteURL()); m8L %!6o
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); \4$Nx/@Q}
httpConnection.setRequestProperty("User-Agent","NetFox"); 'p[6K'Uq5
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int responseCode=httpConnection.getResponseCode(); o|n;{zT"
if(responseCode>=400) Kc
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{ h\#4[/
processErrorCode(responseCode); IuPDr %
return -2; //-2 represent access is error ~hk!N!J\
} |1ry*~
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String sHeader; #|769=1
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for(int i=1;;i++) L
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{ V^qBbk%l>D
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); :/?
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//Utility.log(in.readLine()); /:A239=+ ?
sHeader=httpConnection.getHeaderFieldKey(i); gjT`<CW
if(sHeader!=null) oIE(`l0l
{ 2\$<&]q
if(sHeader.equals("Content-Length")) }1CO>a<
{ hHw1<! M
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 8_>:0(y
break; ;/m>c{
} WR.7%U';
} S WsD]rn
else gDfM} 2]/
break; ,9=P=JH
} p(4Ek"
} G@ybx[_[@
catch(IOException e){e.printStackTrace ();} +A,cdi9z
catch(Exception e){e.printStackTrace ();} b2F1^]p
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Utility.log(nFileLength); {Q K9pZB
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return nFileLength; ]6=opvm
} g+.E=Ef8<4
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//保存下载信息(文件指针位置) 3joMtRB>;
private void write_nPos() d9D*w/clMi
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try{ "J
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output = new DataOutputStream(new FileOutputStream(tmpFile)); wL0"1Ya
output.writeInt(nStartPos.length); rUiUv(q
for(int i=0;i<nStartPos.length;i++) =g@hh)3wP
{ @izS_I,
// output.writeLong(nPos); H<b4B$/
output.writeLong(fileSplitterFetch.nStartPos); 4f0dc\$
output.writeLong(fileSplitterFetch.nEndPos); \BsvUGd
} WWTJ%Rd|
output.close(); g]}]/\
} 1^;&?E
catch(IOException e){e.printStackTrace ();} <* PjG}Z.
catch(Exception e){e.printStackTrace ();} x~yd/ R
} [qt^gy)
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//读取保存的下载信息(文件指针位置) .fW`/BXE
private void read_nPos() V|0UwS\n
{ VKrKA71Z~
try{ Z3T26Uk
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); / dn]`Ge)
int nCount = input.readInt(); R91u6r#
nStartPos = new long[nCount];
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nEndPos = new long[nCount]; t;ga>^NA"
for(int i=0;i<nStartPos.length;i++) s{j3F
{ zwHTtE
nStartPos = input.readLong(); p/s5[>N
nEndPos = input.readLong(); CV7.hF<
} z!j`Qoh?V9
input.close(); wA)R7%&
} XlNB9\"5
catch(IOException e){e.printStackTrace ();} s*}d`"YvH
catch(Exception e){e.printStackTrace ();} ?at~il$z'
} PsD]gN5"
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private void processErrorCode(int nErrorCode) &jPsdv h
{ &l|B>{4v
System.err.println("Error Code : " + nErrorCode); r>q`# ~
} 8i"{GGVC
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//停止文件下载 u09OnP\
public void siteStop() K<_H`k*x
{ ;6)|'3.B9
bStop = true; CnA*o 8w
for(int i=0;i<nStartPos.length;i++) zKWi9
fileSplitterFetch.splitterStop(); S"Zs'7dy`
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} CGg6n CB
} D{z=)'/F
//负责部分文件的抓取 qC|re!K
**FileSplitterFetch.java aA
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*/ ->#7_W
package NetFox; &k{@:z
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import java.io.*; 42Ffx?Qmv
import java.net.*; hQ8{
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public class FileSplitterFetch extends Thread { @',;/j80
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String sURL; //File URL /iQ>he~fy
long nStartPos; //File Snippet Start Position yq,5M1vR
long nEndPos; //File Snippet End Position @+!d@`w:z2
int nThreadID; //Thread's ID EX5kF
boolean bDownOver = false; //Downing is over D 7E^;W)H
boolean bStop = false; //Stop identical |)_<