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**SiteFileFetch.java z "+Mrew
*/ usEwm,b)
package NetFox; r *$Ner
import java.io.*; pGf@z:^{*-
import java.net.*; aYuD>rD
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public class SiteFileFetch extends Thread { UW9?p}F
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SiteInfoBean siteInfoBean = null; //文件信息Bean b&=5m
long[] nStartPos; //开始位置 :>TEDy~O%
long[] nEndPos; //结束位置 )//I'V
FileSplitterFetch[] fileSplitterFetch; //子线程对象 wjh=Q
long nFileLength; //文件长度 'ihhoW8
boolean bFirst = true; //是否第一次取文件 L0&RvI#
boolean bStop = false; //停止标志 AJSx%?h:6
File tmpFile; //文件下载的临时信息 y`$Q\}fS
DataOutputStream output; //输出到文件的输出流 +T=(6dr
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) zN{K5<7o
public SiteFileFetch(SiteInfoBean bean) throws IOException ;x:rZV/
{ q^A+<d
siteInfoBean = bean; H|ER
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); >m#e:[N
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ?V}j`r8|\4
if(tmpFile.exists ()) /DqLrA
{ B*~5)}1op
bFirst = false; =xNv\e
read_nPos(); !2z?YZhu
} ?{U
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else 1fo
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{ >[Ye
nStartPos = new long[bean.getNSplitter()]; j:,NE(DF
nEndPos = new long[bean.getNSplitter()]; .[Ap=UYI>
} mk3_
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} cZ(elZ0~
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public void run() `u.t[
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//获得文件长度 t^[8RhD
//分割文件 Q 2A7mGN
//实例FileSplitterFetch @ JvPx 0
//启动FileSplitterFetch线程 &AlJ "N|
//等待子线程返回 ?%VI{[y#>
try{ -F=v6N {
if(bFirst) ?H_LX;r
{ mo1oyQg8
nFileLength = getFileSize(); RN)dS>$
if(nFileLength == -1) ?-tVSRKQ
{ TZtjbD>B
System.err.println("File Length is not known!"); T]j.=|,d
} K9vIm4::d$
else if(nFileLength == -2) dgDy5{_
{ ->h6j
System.err.println("File is not access!"); /'Pd`Nxl.
} uZZU{U9h
else 7},)]da>,'
{ w=|GJ0
for(int i=0;i<nStartPos.length;i++) *=fr8
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); `+t.!tv!
} l~D N1z6`
for(int i=0;i<nEndPos.length-1;i++) >6oOZbUY0
{ it>r+%
nEndPos = nStartPos[i+1]; I+ es8
} nuo Pg3Nl
nEndPos[nEndPos.length-1] = nFileLength; TRZRYm"
} JT9N!CGZ
} $!5\E>y#
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//启动子线程 v4RlLgdS%
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; i/b'4o=8
for(int i=0;i<nStartPos.length;i++) XX1Il;1G#
{ l<Q>N|1#k%
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), |oub!fG4
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), d*oUfiW
nStartPos,nEndPos,i); DI`%zLDcY
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ,-+"^>
fileSplitterFetch.start(); j
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} tTN?r 8
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Dfd-^N!
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); k'$!(*]\b
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", k8,?hX:
nEndPos = " + nFileLength); s/:Fwr4q#a
// fileSplitterFetch[nPos.length-1].start(); p'sc0@}_O
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//等待子线程结束 v|ox!0:#
//int count = 0; w'X]M#Q><
//是否结束while循环 oo=#XZkk
boolean breakWhile = false; *_ +7ni
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while(!bStop) tA$)cg+.
{ <`!PCuR
write_nPos(); Qm8)4?FZ
Utility.sleep(500);
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breakWhile = true; |0{u->+ )
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for(int i=0;i<nStartPos.length;i++) \@}#Gez
{ ri1C-TJM)
if(!fileSplitterFetch.bDownOver) q8:{Nk
{ E42eOGp9i
breakWhile = false; @<M*qK1h
break; B/Gd(S`@q
} -[OXSaf6
} Omi^>c4G
if(breakWhile) $|$e%
break; |wox1Wt|E
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//count++; 24Z]%+b*E
//if(count>4) Y${l!+q
// siteStop(); O[9-:,B{w
} }j1!j&&
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System.err.println("文件下载结束!"); #Fu>|2F|
} .+y>8h3{
catch(Exception e){e.printStackTrace ();} ;nmM7TZ;
} l{ex?
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//获得文件长度 w(1Gi$Z(Q)
public long getFileSize() VGw(6`|!
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int nFileLength = -1; ;Qi }{;+
try{ .bf<<+'o
URL url = new URL(siteInfoBean.getSSiteURL()); 9kKnAf4Z
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); D\^WXY5e%y
httpConnection.setRequestProperty("User-Agent","NetFox"); xjdw'v+qZo
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int responseCode=httpConnection.getResponseCode(); A>NsKWf{
if(responseCode>=400) yBLUNIr
{ }<MR`h1
processErrorCode(responseCode); +:6Ii9GN
return -2; //-2 represent access is error &X`u9 V
} 5j"1z1_&
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String sHeader; .BO<
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for(int i=1;;i++) 5/m$)wE
{ <-UOISyf
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); J
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//Utility.log(in.readLine()); ^TXf sQs
sHeader=httpConnection.getHeaderFieldKey(i); Swtbl`,
if(sHeader!=null) :9l51oE7
{ 1u]P4Gf=
if(sHeader.equals("Content-Length")) p4VqV6LwD
{ }8'&r(cN4
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); |0bc$ZY:
break; <Wl(9$
} ,/&Zw01dGN
} }tST)=M`
else %u p}p/?
break; ;52'}%5
} V'Qn sI
} km:nE: |
catch(IOException e){e.printStackTrace ();} %@ mGK8
catch(Exception e){e.printStackTrace ();} i(2y:U3[@
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Utility.log(nFileLength); 0)uYizJce
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return nFileLength; h3u1K>R)
} =Pe><k
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//保存下载信息(文件指针位置) 7z~Ghz
private void write_nPos() 9x~-*8aw
{ OIaYHA
try{ <o:@dS
output = new DataOutputStream(new FileOutputStream(tmpFile)); [JTto!Ih$
output.writeInt(nStartPos.length); U; xF#e
for(int i=0;i<nStartPos.length;i++) 0vs0*;F;
{ (7$$;
// output.writeLong(nPos); O>DNC-m)i{
output.writeLong(fileSplitterFetch.nStartPos); =~FG&rk^
output.writeLong(fileSplitterFetch.nEndPos); (N~$x
} ){Mu~P
output.close(); SKXBrD=-
} _JGs}aQ
catch(IOException e){e.printStackTrace ();} j kn^Z":
catch(Exception e){e.printStackTrace ();} ~krS#\
} ?~ULIO'
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//读取保存的下载信息(文件指针位置) M<8ML!N0;t
private void read_nPos() O ++/ry%k
{ N=,j}FY
try{ eE:&qy^
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); LhJ a)jFQ
int nCount = input.readInt(); 1]4^V7y
nStartPos = new long[nCount]; u@ N~1@RT|
nEndPos = new long[nCount]; k1N$+h
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for(int i=0;i<nStartPos.length;i++) B0mLI%B
{ gb-{2p>}
nStartPos = input.readLong(); Yx?aC!5M
nEndPos = input.readLong(); -rY 7)=
} Ya4?{2h@+
input.close(); M^SuV
} mv
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catch(IOException e){e.printStackTrace ();} ~I_owCVZ
catch(Exception e){e.printStackTrace ();} EZr6oO@Nc
} 9q4_j
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private void processErrorCode(int nErrorCode) ['Z{@9
{ <O857j
System.err.println("Error Code : " + nErrorCode); `6w#8}
} (6xDu.u?A
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//停止文件下载 Y_H/3?b%
public void siteStop() Ky9W/dCR
{ -Wjh* *
bStop = true; K} x/ BhE+
for(int i=0;i<nStartPos.length;i++) yqcM(,0]
fileSplitterFetch.splitterStop(); tEhr
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} Enj_tJs
} .|]IwyD
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//负责部分文件的抓取 ! *a[jhx
**FileSplitterFetch.java [e4![G&y`
*/ 6$e]i|e
package NetFox; G%hO\EO
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import java.io.*; :1<~}*B@{
import java.net.*; 3IyZunFT
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public class FileSplitterFetch extends Thread { M<oA<#IW
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String sURL; //File URL O~'FR[J
long nStartPos; //File Snippet Start Position {\We72!
long nEndPos; //File Snippet End Position !t-K<'
int nThreadID; //Thread's ID yq*JdTF
boolean bDownOver = false; //Downing is over fi=?n{e'
boolean bStop = false; //Stop identical H-&3}
FileAccessI fileAccessI = null; //File Access interface <aVfJd/fT
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException B_~jA%0m'
{ P4%>k6X
this.sURL = sURL; nPf'ee
this.nStartPos = nStart; euZ(}+N&
this.nEndPos = nEnd; ?`. XK}
nThreadID = id; M_&4]\PkCy
fileAccessI = new FileAccessI(sName,nStartPos);//定位 T|+$@o
} |\{Nfm=:%
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public void run() >UN vkQ:
{ hWxT !
while(nStartPos < nEndPos && !bStop) iwo$\
{ ~07RFR
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try{
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URL url = new URL(sURL); H-a^BZ&iU
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); -A;w$j6*
httpConnection.setRequestProperty("User-Agent","NetFox"); "^"'uO$
String sProperty = "bytes="+nStartPos+"-"; @XBH.A^7r
httpConnection.setRequestProperty("RANGE",sProperty);
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Utility.log(sProperty); E\!n49
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InputStream input = httpConnection.getInputStream(); ,>w}xWSYpG
//logResponseHead(httpConnection); 6+ANAk
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byte[] b = new byte[1024]; Q?]w{f(
int nRead; 4?]ZV_BD
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 1PIzV:L\
{ >)sqh ~P
nStartPos += fileAccessI.write(b,0,nRead); |8'B/
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//if(nThreadID == 1) u_Zm1*'?B
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 85C#ja1&