/* Wa>}wA=v
**SiteFileFetch.java K^)Eb(4
*/ Z!a=dnwHz
package NetFox; ~k-y &<UR
import java.io.*; T*/rySs
import java.net.*; XB;7!8|
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public class SiteFileFetch extends Thread { xf\ C|@i
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SiteInfoBean siteInfoBean = null; //文件信息Bean 4$HhP,gL=
long[] nStartPos; //开始位置 )
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long[] nEndPos; //结束位置 <Uk}o8E
FileSplitterFetch[] fileSplitterFetch; //子线程对象 P-9)38`5
long nFileLength; //文件长度 kr^P6}'
boolean bFirst = true; //是否第一次取文件 q5J5>
boolean bStop = false; //停止标志 Gt8M&S-;
File tmpFile; //文件下载的临时信息 xjUT{iwS
DataOutputStream output; //输出到文件的输出流 |#v7/$!
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) D#9m\o_
public SiteFileFetch(SiteInfoBean bean) throws IOException ?um;s-x)
{ ]!W=^!
siteInfoBean = bean; ihhDO mUto
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); U|H=Y"pL
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 6##_%PO<m
if(tmpFile.exists ()) ;0]aq0_#(
{ xk9%F?)
bFirst = false; IEL%!RFG
read_nPos(); 6fE7W>la
} [t m_Mg
else bi',j0B
{ :;%2BSgFU
nStartPos = new long[bean.getNSplitter()]; +[6G5cH
nEndPos = new long[bean.getNSplitter()];
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} <yV"6/l0
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//up5R_nx
public void run() kYE9M8s;
{ >4x(e\B
//获得文件长度 { T/[cu<
//分割文件 T=
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//实例FileSplitterFetch \i>?q
//启动FileSplitterFetch线程 Fk&c=V;SU
//等待子线程返回 x /(^7#u,
try{ 2lZ
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if(bFirst) u74[>^
{ `z}?"BW|
nFileLength = getFileSize(); hE:9{;Gf
if(nFileLength == -1) ;}I:\P
{ [~+wk9P
System.err.println("File Length is not known!"); 2"v6
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} >>4qJ%bL
else if(nFileLength == -2) +)AG*
{ aL\PGdgO
System.err.println("File is not access!"); C!O0xhs
} %:f&.@'r
else LRxZcxmy
{ MVpGWTH@F
for(int i=0;i<nStartPos.length;i++) ~p6 V,Q
{ u4cnE"
nStartPos = (long)(i*(nFileLength/nStartPos.length)); &C5_g$Ma.Z
} +zqn<<9
for(int i=0;i<nEndPos.length-1;i++) 7uqzm
{ B&M%I:i
nEndPos = nStartPos[i+1]; SBu"3ym
} $j%'{)gK
nEndPos[nEndPos.length-1] = nFileLength; L]|gZ&^
} n1ZbRV
} (!u~CZ;
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//启动子线程 93>jr<A
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; *g "Nq+i@
for(int i=0;i<nStartPos.length;i++) 1/B>XkCJ
{ /s&9SYF
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), tn\yI!a
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), -vo})lO
nStartPos,nEndPos,i); PudS2k_Qv
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); fCd&D
fileSplitterFetch.start(); @Rze|
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} ;J( 8
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// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), V;VHv=9`o
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 3Y4?CM&0v
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 94`7a<&ZNL
nEndPos = " + nFileLength); LtF,kAIt7v
// fileSplitterFetch[nPos.length-1].start(); #FLb*%Nr
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//等待子线程结束 AEI>\Y
//int count = 0; oN~&_*FE
//是否结束while循环 T3.&R#1M8-
boolean breakWhile = false; caR<Kb:;*
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while(!bStop) ='r!g
{ f1RWP@iar
write_nPos(); ;vR4XHl|
Utility.sleep(500); un"Gozmt5
breakWhile = true; #6aW9GO
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for(int i=0;i<nStartPos.length;i++) +zN-!5x
{ IJp-BTO{V
if(!fileSplitterFetch.bDownOver) dh\'<|\K
{ G^|:N[>B
breakWhile = false; .[KrlfI
break; m]0;"jeL
} A/$QaB,x
} e`_LEv
if(breakWhile) ;W
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break; ij`w} V
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//count++; 2eS~/Pq5=i
//if(count>4) =!A_^;NQf
// siteStop(); %g$o/A$
} \ A#41
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System.err.println("文件下载结束!"); :K,i\
} T@B/xAq5!
catch(Exception e){e.printStackTrace ();} U[-o> W#
} 9MJG;+B~
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//获得文件长度 _Kf% \xg
public long getFileSize() 3AtGy'NTp
{ q-2Bt,Y
int nFileLength = -1; ]IQ&>z}<
try{ YQvD|x
URL url = new URL(siteInfoBean.getSSiteURL()); V#$RR!X'
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); A2Ed0|B y
httpConnection.setRequestProperty("User-Agent","NetFox"); ',@3>T**
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int responseCode=httpConnection.getResponseCode(); >Eto(
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if(responseCode>=400) K#d`Hyx
{ ;?iW%:_,
processErrorCode(responseCode); %3-y[f
return -2; //-2 represent access is error Np9<:GF1
} zrgk]n;Pq
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String sHeader; R4cM%l_#W
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for(int i=1;;i++) &i6mW8l
{ n0 {i&[I~+
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 9wwqcx)3(
//Utility.log(in.readLine()); '[:D$q;
sHeader=httpConnection.getHeaderFieldKey(i); ~rKrpb]ow
if(sHeader!=null) D?_Zl;bQ'^
{ 4N3R|
if(sHeader.equals("Content-Length")) 5coyr`7mP
{ VA_PvL.9
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); }!r|1$,kL
break; <{cQM$#
} \'D0'\:vz
} !CT5!5T
else Qd$nH8ED Y
break; Ya"a`ozq
} =s2*H8]
} osAd1<EIC
catch(IOException e){e.printStackTrace ();} f}f9@>.
catch(Exception e){e.printStackTrace ();} >*_$]E
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Utility.log(nFileLength); 266h\2t6
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return nFileLength; g|yvF-+
}
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//保存下载信息(文件指针位置) ] 72`};
private void write_nPos() *zvx$yJ?
{ (exa<hh
try{ b9HtR -iR;
output = new DataOutputStream(new FileOutputStream(tmpFile)); 6j]0R*B7`Q
output.writeInt(nStartPos.length); m8hk:4Ae
for(int i=0;i<nStartPos.length;i++) g7`LEF <A
{ w``ST
// output.writeLong(nPos); <)c)%'v
output.writeLong(fileSplitterFetch.nStartPos); 9IfmW^0
output.writeLong(fileSplitterFetch.nEndPos); ;))+>%SGCt
} c9u`!'g`i
output.close(); K!Y71_#
} Yu^4VXp~M%
catch(IOException e){e.printStackTrace ();} ~Otoqu|
catch(Exception e){e.printStackTrace ();} ,f'CD{ E
} 9F;>W ET
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//读取保存的下载信息(文件指针位置) K;H&n1
private void read_nPos() YfKdR"i+.
{ 8^+%I/S$
try{ qWPkT$ u
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); rcG"o\g@+
int nCount = input.readInt(); ,m|h<faZL
nStartPos = new long[nCount]; 'yEHI
nEndPos = new long[nCount]; LYK"( C
for(int i=0;i<nStartPos.length;i++) }!.(n=idZ
{ YZ8>OwQz2
nStartPos = input.readLong(); 0-Ku7<a
nEndPos = input.readLong(); O;jrCB
} (vJNHY M
input.close(); /%1ON9o>
} 2-v%`fA
catch(IOException e){e.printStackTrace ();} !PQ<04jA!
catch(Exception e){e.printStackTrace ();} y/7\?qfTk
} xdt-
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private void processErrorCode(int nErrorCode) vr6w^&[c^
{ Y)2,PES=
System.err.println("Error Code : " + nErrorCode); p]+Pkxz]'
} >@_^fw)
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//停止文件下载 I-(zaqp@
public void siteStop() SZ'R59Ee<
{ flbd0NB
bStop = true; ;$wVu|&
for(int i=0;i<nStartPos.length;i++) !?h;wR
fileSplitterFetch.splitterStop(); >SHhAEF
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} K
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} n 0L^e
//负责部分文件的抓取 /7F:T[
**FileSplitterFetch.java _Q 4)X)F
*/ dcN22A3
package NetFox; %l[( Iw
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import java.io.*; &B1Wt