/* P6'Oe|+'
**SiteFileFetch.java "L^]a$&
*/ QcJ?1GwA"
package NetFox; eMyh&@7(F
import java.io.*; Vm}OrFA
import java.net.*; a@:(L"Or
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public class SiteFileFetch extends Thread { x01 n
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SiteInfoBean siteInfoBean = null; //文件信息Bean A\p'\@f
long[] nStartPos; //开始位置 ]OIB;h;3
long[] nEndPos; //结束位置 Zp@j*P
FileSplitterFetch[] fileSplitterFetch; //子线程对象 :YaEMQJ^
long nFileLength; //文件长度 .CGPG,\2
boolean bFirst = true; //是否第一次取文件 G"P@AOw
boolean bStop = false; //停止标志 ggQ/_F8u
File tmpFile; //文件下载的临时信息 Vg'vL[Y
DataOutputStream output; //输出到文件的输出流 ZXV_Dc
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) |#9Nu9ak
public SiteFileFetch(SiteInfoBean bean) throws IOException C(-w A
{ r
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siteInfoBean = bean; {I'8+~|pZL
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); |Iei!jm
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); x=>B 6o-f
if(tmpFile.exists ()) qv\n]M_&
{ Er/h:=
bFirst = false; B].V|8h
read_nPos(); nmIos]B
} buV{O[
else pQv`fr=
{ ]DVZeI03@
nStartPos = new long[bean.getNSplitter()]; Qj;wklq
nEndPos = new long[bean.getNSplitter()]; iUDN m|e
} ~D# -i >Z
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} &V/n!|q<H
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public void run() SFhi]48&V
{ 4WCWu}
//获得文件长度 OpFe=1Q
//分割文件 sa 8JN.B
//实例FileSplitterFetch o/0cd
//启动FileSplitterFetch线程 >YG1sMV-J
//等待子线程返回 sG-$d\
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try{ <Y%km[Mh
if(bFirst) 38ac~1HjE
{ Gy}WZ9{
nFileLength = getFileSize(); }!_x\eq^
if(nFileLength == -1) Jr|"QRC
{ ~,#zdm1r@
System.err.println("File Length is not known!"); l0Rjq*5hJ
} y04md A6<
else if(nFileLength == -2) ~N
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{ \S#Mc
System.err.println("File is not access!"); &1nZ%J9
} z+3GzDLy
else HURrk~[
{ iCd$gwA>F
for(int i=0;i<nStartPos.length;i++) Pw c)u&
{ MnToL@
nStartPos = (long)(i*(nFileLength/nStartPos.length)); F)fCj^zL
} _:dt8+T#
for(int i=0;i<nEndPos.length-1;i++) =QdHji/sB
{ RRSkXDU}
nEndPos = nStartPos[i+1]; W5 l)mAv
} iczJXA+
nEndPos[nEndPos.length-1] = nFileLength; vNdMPulr{
} <'(O0
} ~x67v+I
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//启动子线程 GJTKqr|1O
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; (]cM;
for(int i=0;i<nStartPos.length;i++) VtM:~|v
{ )|52B;yZx
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 87&BF)]
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), W^U6O&-K
nStartPos,nEndPos,i);
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); :Q\Es:y
fileSplitterFetch.start(); YoC{ t&rY
} Cn\5Vyrl
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), h>0R!Rl8
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); r0MUv}p#|L
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", =yT3#A~<G
nEndPos = " + nFileLength); R1,.H92
// fileSplitterFetch[nPos.length-1].start(); k&JB,d-mJ%
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//等待子线程结束 ;Gf,I1d}{
//int count = 0; ^)i5.o\
//是否结束while循环 :eHD{=
boolean breakWhile = false; A(Tqf.,G
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while(!bStop) [u?*'
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{ cx+w_D9b!
write_nPos(); tccw0
Utility.sleep(500); ,=Q;@Z4 vJ
breakWhile = true; /R/\>'{E&c
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for(int i=0;i<nStartPos.length;i++) U3UKu/Z
{ |gV$ks\<
if(!fileSplitterFetch.bDownOver) )># Y,/q
{ *8I+D>x
breakWhile = false; #\P\(+0K
break; ]TE(:]o7V
} DJWm7 t
} O {hM
if(breakWhile) !sTOo
break; W't?aj I|
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//count++; wSV}{9}wr%
//if(count>4) /JcfAY
// siteStop(); ~8oti4
} 8D
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System.err.println("文件下载结束!"); 7%MD0qm-
} e7O9q8b
catch(Exception e){e.printStackTrace ();} MbT;]Bo
} p1BMQ?=($
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//获得文件长度 1QA{NAnu&
public long getFileSize() R>C^duos.
{ <2.87:
int nFileLength = -1; /r8'stRzv
try{ og?>Q i Tr
URL url = new URL(siteInfoBean.getSSiteURL()); -22]|$f
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); $.5f-vQp
httpConnection.setRequestProperty("User-Agent","NetFox"); c4Leh"ry
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}CM</
int responseCode=httpConnection.getResponseCode(); av8\?xmo.$
if(responseCode>=400) -%G}T}"_
{ uY_vX\;67z
processErrorCode(responseCode); ?'8(']/
return -2; //-2 represent access is error VG=mA4Dd
} %"jp':
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String sHeader; uHQf <R$:
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for(int i=1;;i++) v'e5j``=
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); >WZ_) `R
//Utility.log(in.readLine()); Ovhd%qV;Y
sHeader=httpConnection.getHeaderFieldKey(i); ! N!A%
if(sHeader!=null) 0XzrzT"&
{ uE=pq<
if(sHeader.equals("Content-Length")) c $fYK
{ ~lQ<#*wl
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ~Qm<w3oy
break; = }!4%.$
} EpCT !e
} *dpKo&y
else v;ZIqn"
break; - %'ys
} isR)^fI|
} h?-*SLT
catch(IOException e){e.printStackTrace ();} P 5_l&
catch(Exception e){e.printStackTrace ();} oD8X]R,
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Utility.log(nFileLength); %NH{%K,
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return nFileLength; RQ*oTsq
} O?OG`{k
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//保存下载信息(文件指针位置) !?aL_{7J
private void write_nPos() K?]c
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try{ d) $B
output = new DataOutputStream(new FileOutputStream(tmpFile)); 7H$wpn
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output.writeInt(nStartPos.length); 9k*1_
for(int i=0;i<nStartPos.length;i++) Mrly(*!U"@
{ sIz*r Gz
// output.writeLong(nPos); :YUQKy
output.writeLong(fileSplitterFetch.nStartPos); GS qt:<Qs
output.writeLong(fileSplitterFetch.nEndPos); V+>.Gf
} pRc<U^Z.h
output.close(); =%ry-n G
} P+gYLX8
catch(IOException e){e.printStackTrace ();} N6<G`k,
catch(Exception e){e.printStackTrace ();} \ sc's7
} >mCS`D8
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//读取保存的下载信息(文件指针位置) m[$pj~<\
private void read_nPos() %<yH6h*u
{ }HLV'^"k
try{ )Q5ja}-{V
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); |HfN<4NL
int nCount = input.readInt(); eZvG
nStartPos = new long[nCount]; uD8,E!\
nEndPos = new long[nCount]; %$ ^eY'-'
for(int i=0;i<nStartPos.length;i++) }pOJ M&I
{ qu+Zl1~$]
nStartPos = input.readLong(); LQDU8[-
nEndPos = input.readLong(); S&z8-D=8k
} bo_Tp~j
input.close(); sA:k8aj
} nS9 kwaO
catch(IOException e){e.printStackTrace ();} BWev(SF{Ny
catch(Exception e){e.printStackTrace ();} W_FN*Er
} !K8V":1du#
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private void processErrorCode(int nErrorCode) w#w?Y!JXo
{ ){FXonVP
System.err.println("Error Code : " + nErrorCode); u0i;vO)MNt
} w<$0n#5
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//停止文件下载 2&KM&NX~
public void siteStop() 2E_d$nsJ
{ ~`!{5:v
bStop = true; 9`|~-b
for(int i=0;i<nStartPos.length;i++) o?((FW5.;
fileSplitterFetch.splitterStop(); <:!;79T\
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} DEN (pA\
} ^hyp}WN
//负责部分文件的抓取 :#nv:~2]
**FileSplitterFetch.java PsOu:`=r
*/ h%+6y
package NetFox; O]-s(8Oo3
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import java.io.*; 5"^Z7+6
import java.net.*; z8*{i]j
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public class FileSplitterFetch extends Thread { 2y#[uSqB
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String sURL; //File URL SE0&CV4
long nStartPos; //File Snippet Start Position ]h4r@L3
long nEndPos; //File Snippet End Position =b/:rSd$NA
int nThreadID; //Thread's ID y25L`b
boolean bDownOver = false; //Downing is over -;W`0k^
boolean bStop = false; //Stop identical S0jYk (
FileAccessI fileAccessI = null; //File Access interface P> [,,w
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException OTV$8{
{ /4%ycr6
this.sURL = sURL; @zq]vX-A_
this.nStartPos = nStart; Mcm%G#
this.nEndPos = nEnd; ~X<Ie9m1x
nThreadID = id; Cs?[
fileAccessI = new FileAccessI(sName,nStartPos);//定位 Lf0Wc'9{
} E`gUNAKQ
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public void run() hVf;{p
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{ P`]p&:
while(nStartPos < nEndPos && !bStop) {L.=)zt>
{ tEjT$`6hp
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try{ l2
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URL url = new URL(sURL); dH_g:ocA
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 3}gf%U]L
httpConnection.setRequestProperty("User-Agent","NetFox"); vq-#%o
String sProperty = "bytes="+nStartPos+"-"; CCp&+LRvR
httpConnection.setRequestProperty("RANGE",sProperty); JH`oa1b
Utility.log(sProperty); <
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InputStream input = httpConnection.getInputStream(); tVqc!][
//logResponseHead(httpConnection); m$WN"kV`,9
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byte[] b = new byte[1024]; .u\xA7X
int nRead; _8ubo\M~
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) /& wA$h
{ /@feY?glc
nStartPos += fileAccessI.write(b,0,nRead); &)GlLpaT
//if(nThreadID == 1) 5rlZ'>I.
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); s8|Fe_
} @8"cT-
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Utility.log("Thread " + nThreadID + " is over!"); f0]`TjY
bDownOver = true; r0j+P%
//nPos = fileAccessI.write (b,0,nRead); _>4Qh#6K
} @zi_@B
catch(Exception e){e.printStackTrace ();} tr-muhuK
} Dh.pH1ZY3n
} Eq6.
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//打印回应的头信息 'm|PSwB7
public void logResponseHead(HttpURLConnection con) z\r29IRh
{ At)\$GJ
for(int i=1;;i++) m(p0)X),_i
{ :!<