/* #nzVgV]
**SiteFileFetch.java {eQ')f
*/ /.Fvl;!J;
package NetFox; PCx] >&
import java.io.*; ?)60JWOJ1
import java.net.*; #wvmVB. 5~
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public class SiteFileFetch extends Thread { VkD8h+)
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SiteInfoBean siteInfoBean = null; //文件信息Bean Gp PlO]
long[] nStartPos; //开始位置 ]h`<E~
long[] nEndPos; //结束位置 k *#fN(_
FileSplitterFetch[] fileSplitterFetch; //子线程对象 z1WF@Ej
long nFileLength; //文件长度 Hf
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boolean bFirst = true; //是否第一次取文件 {|jrYU.k~
boolean bStop = false; //停止标志 4)IRm2G
File tmpFile; //文件下载的临时信息 %"1*,g{
DataOutputStream output; //输出到文件的输出流 MmvMuX]#)
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) EE^
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public SiteFileFetch(SiteInfoBean bean) throws IOException 1l~(J:DT
{ YXBU9T{r
siteInfoBean = bean; (Vvs:h%H
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Ep@NT+VnI
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); //ZYN2lT4
if(tmpFile.exists ()) z;74(5?q
{ b')Lj]%;k
bFirst = false; =,UuQJ,l
read_nPos(); l5}b.B^w
} Rzolue 8
else ,%L>TD'48s
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nStartPos = new long[bean.getNSplitter()]; '%D$|)
nEndPos = new long[bean.getNSplitter()]; /{j")
} oI!L2
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public void run() 1e0O-aT#Q
{ !.[N(%"
//获得文件长度 )R QX1("O
//分割文件 j.5;0b_L^
//实例FileSplitterFetch W/U_:^[-
//启动FileSplitterFetch线程 +Y:L4`
//等待子线程返回 d+6 by,'
try{ $c WO`\XM
if(bFirst) ~(|~Ze>
{ 2K8?S
nFileLength = getFileSize(); 1 o;*`
if(nFileLength == -1) c04"d"$ x
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System.err.println("File Length is not known!"); +>F #{b
} ,sM>{NK9R
else if(nFileLength == -2) ,w+}Evp])
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System.err.println("File is not access!"); HfF4BQxm
} #*g .hL<
else
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for(int i=0;i<nStartPos.length;i++) ~4{E0om@
{ LGOeBEAMV^
nStartPos = (long)(i*(nFileLength/nStartPos.length)); T}?vp~./
} w'Kc#2
for(int i=0;i<nEndPos.length-1;i++) C&\vVNV;9
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nEndPos = nStartPos[i+1]; Z1(-FT6O
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nEndPos[nEndPos.length-1] = nFileLength; ()E:gqQ
} +hz^( I7
} )>! IY Q
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//启动子线程 "/EE$eU
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; *L%i-Wg"
for(int i=0;i<nStartPos.length;i++) B>^5h?(lt
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), )A`Zgg'L7D
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ]Tje6iF
nStartPos,nEndPos,i); gAx8r-` `
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ) OqQz7'
fileSplitterFetch.start(); -*?Y4}mK
} K|H&x"t
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 4LCgQS6
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); A/ eZ!"Y
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", HzO6hb{jJO
nEndPos = " + nFileLength); YzcuS/~x
// fileSplitterFetch[nPos.length-1].start(); AX|-Gv
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//等待子线程结束 MuQBn7F{c
//int count = 0; E0 nR Vg
//是否结束while循环 _HT*>-B
boolean breakWhile = false; 0I.9m[<Fc
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while(!bStop) S=Ihg
{ @~!1wPvF`I
write_nPos(); a<.7q1F
Utility.sleep(500); >.D0McQg
breakWhile = true; ;w(]z
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for(int i=0;i<nStartPos.length;i++) %j].'
;
{ QK5y%bTSA
if(!fileSplitterFetch.bDownOver) 728}K^7:
{ iA~b[20&
breakWhile = false; WC!b B
break; ASuxty
} I#Q
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} o:\RJig<
if(breakWhile) TtL2}Wdd.%
break; Jmb [d\ /D
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//count++; $*| :A
//if(count>4) jafq(t
// siteStop(); VV(>e@Bc4
} mm3goIi;Y
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System.err.println("文件下载结束!"); J&{qe@^
} \C3ir &
catch(Exception e){e.printStackTrace ();} ?VMj;+'tr
} U~8.uldnF
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//获得文件长度 ZQvpkO7}M
public long getFileSize() mMqT-jT
{ $+IE`(Ckf
int nFileLength = -1; z8bDBoD6
try{
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URL url = new URL(siteInfoBean.getSSiteURL()); U[zY0B
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ,jBd3GdlZ
httpConnection.setRequestProperty("User-Agent","NetFox"); H_'i.t 'SS
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int responseCode=httpConnection.getResponseCode(); IMY?L
if(responseCode>=400) d 7A08l{
{ pRtxyL"y
processErrorCode(responseCode); }>JFO:v&
return -2; //-2 represent access is error @GGzah#
} ZdEeY|j
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String sHeader; 0fvQPs!O
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for(int i=1;;i++) #&.&Uu$
{ <^,w,A
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 2}u hPW+
//Utility.log(in.readLine()); Fzk
sHeader=httpConnection.getHeaderFieldKey(i); Y[gj2vNe4g
if(sHeader!=null) c'_-jdi`>_
{ f>JuxX\G
if(sHeader.equals("Content-Length")) pN<wO1\9
{ lgZ3=h
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); )5lo^Qb
break; b=a&!r5M
} xm>RLx}9
} DCb\=E
else ze
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break; >9W ;u`
} . m_y5J
} L0SeG:
catch(IOException e){e.printStackTrace ();} &I.UEF2,
catch(Exception e){e.printStackTrace ();} *=L3bBu?
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Utility.log(nFileLength); t=iSMe
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return nFileLength; m~9Qx`fi`
} v'B++-%
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//保存下载信息(文件指针位置) CzxU
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private void write_nPos() 1TfK"\
{ hS&,Gm`^
try{ L)VEA8}
output = new DataOutputStream(new FileOutputStream(tmpFile)); )((Jnm D
output.writeInt(nStartPos.length); 2%N$Y]
for(int i=0;i<nStartPos.length;i++) nBL7LocvR
{ ~C<
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// output.writeLong(nPos); WO$PW`k
output.writeLong(fileSplitterFetch.nStartPos); v$"#9oh
output.writeLong(fileSplitterFetch.nEndPos); V\@h<%{^%7
} z8M^TV
output.close(); g^(wZ$NH
} 9i WDEk
catch(IOException e){e.printStackTrace ();} $j^Jj
catch(Exception e){e.printStackTrace ();} goi.'8M|/b
} (,PO(
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//读取保存的下载信息(文件指针位置) OA2<jrGB!
private void read_nPos() } ab@Nd$
{ PygT_-3z{
try{ $78fR8|r-
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); PJN TIa
int nCount = input.readInt(); au2ieZZ[
nStartPos = new long[nCount]; z
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nEndPos = new long[nCount]; T%K(opISc(
for(int i=0;i<nStartPos.length;i++) XJsHy_6
{ =)m2u2c M
nStartPos = input.readLong(); UiA\J
nEndPos = input.readLong();
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} 9 )u*IGj
input.close(); 6
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} CJk$o K{Q
catch(IOException e){e.printStackTrace ();} H
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catch(Exception e){e.printStackTrace ();} .&.j?kb
} E\#hcvP
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private void processErrorCode(int nErrorCode) /j./
{ {gluK#Qm
System.err.println("Error Code : " + nErrorCode); T5NO}bz
} Z5;1ySn{
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//停止文件下载 U?JZ23>bbw
public void siteStop() {bL6%._C
{ ,Cj1S7GFR
bStop = true; /K2VSj3\
for(int i=0;i<nStartPos.length;i++) [wP;g'F
fileSplitterFetch.splitterStop(); w"$CV@AJ
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} d7qY(!&
} ,K .P,z~*
//负责部分文件的抓取 Ojq>4=Z\
**FileSplitterFetch.java uQWJ7Xm
*/ R_\{a*lV0
package NetFox; vb)Z&V6(
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