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/* !6:q#B* **SiteFileFetch.java <,S0C\la= */ #UN(R package NetFox; F +e
J9 import java.io.*; {V&
2k9* import java.net.*; ;0}8vs p{:r4!*L QiU!;!s public class SiteFileFetch extends Thread { -e_+x'uF x~."P*5 8.ek_r SiteInfoBean siteInfoBean = null; //文件信息Bean a$p2I+lX long[] nStartPos; //开始位置 5- Q`v/w; long[] nEndPos; //结束位置 5BKmp-m FileSplitterFetch[] fileSplitterFetch; //子线程对象 [,_M@g3 long nFileLength; //文件长度 zdA:K25" boolean bFirst = true; //是否第一次取文件 0`X%& boolean bStop = false; //停止标志 Zp|LCE" File tmpFile; //文件下载的临时信息 xNt DataOutputStream output; //输出到文件的输出流 x/$s:[0B# #80*3vi~F //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) <@CBc:j0 public SiteFileFetch(SiteInfoBean bean) throws IOException @Kri)U
i { 7pNTCZY| siteInfoBean = bean; qL^}t_> //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); SM:SxhrGt tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); M%7H-^{ if(tmpFile.exists ()) \~xOdqF/ { ?v2OoNQ
bFirst = false; @URLFMFi read_nPos(); S EY } nLq7J: else ?U0iHg{ { T6f{'.w nStartPos = new long[bean.getNSplitter()]; sY,!Ir`/` nEndPos = new long[bean.getNSplitter()]; (^g?/i1@d } +j 5u[X '3uj6Wq2 _C?<re3* tkdhT8_ } z;x`dOP ZNPzQ:I@ V"VWHAu*.w public void run() D%LM"p { uPe4Rr //获得文件长度 96F:%|yG //分割文件
~4Is //实例FileSplitterFetch okX\z[X //启动FileSplitterFetch线程 fiTMS: //等待子线程返回 R~b9) try{ sZ-]yr\E" if(bFirst) -5\aL"?4 { ,TU!W|($ nFileLength = getFileSize(); sTqy-^e7 if(nFileLength == -1) 1G|Q~%cv { %dZD;Vhg System.err.println("File Length is not known!"); w;Qo9=- } /#$bb4 else if(nFileLength == -2) fDq,
)~D { ac.O#6& System.err.println("File is not access!"); #I@]8U#,": } sXTt)J else 4:cbasy { L4sN)EI for(int i=0;i<nStartPos.length;i++) o<-%)#e { #s1M>M) nStartPos = (long)(i*(nFileLength/nStartPos.length)); @Risabn } *6*#"#D for(int i=0;i<nEndPos.length-1;i++) X5wS6v)#( { P0Na<)\'Y! nEndPos = nStartPos[i+1]; CV4V_G } L5yxaF{] nEndPos[nEndPos.length-1] = nFileLength; 1s\10 hK1c } 1:7>Em<s } o;Zoj} `#fOY$#XB CpS'2@6 //启动子线程 w0SzK-& fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; TFxb\ for(int i=0;i<nStartPos.length;i++) NOx&`OU+ { .EloBP fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), *U54x
/w| siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), F.A<e #e? nStartPos,nEndPos,i); ;~]&$2sk Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); K?[pCF2C fileSplitterFetch.start(); 'n:Ft } j)-D.bY0 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), @+1E|4L1vf siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 9 b]U&A$ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", no?)GQ nEndPos = " + nFileLength); @hzQk~Gdi // fileSplitterFetch[nPos.length-1].start(); xxkP4,(p #j-,#P@ ~n[LL)v //等待子线程结束 {]<D"x; //int count = 0; qoZ* sV //是否结束while循环 +1d\ZZA|6& boolean breakWhile = false; +ZRsa`'^ TP{a*ke^5, =_":Z!_ while(!bStop) }#'KME4 { MruWt* write_nPos(); mApn(& Utility.sleep(500); 2zFdKs, breakWhile = true; u~s'<c+8_ Z~ ?:r Km,tfM5j for(int i=0;i<nStartPos.length;i++) ]3={o3[: { M8[YW|VkP if(!fileSplitterFetch.bDownOver) "[[fQpe4@ { $#RD3#=?u breakWhile = false; do[K-r break; J $e.$ah; } o B6"D } #
Jdip) if(breakWhile) :ZL>JVk break; l*v([@A\ ,6M-xSDs s`#hk^{ //count++; raqLXO!j //if(count>4) d:pp,N~2o // siteStop(); 5)nv } NWAF4i&$ EPa3Yb?BGb Y43#]; System.err.println("文件下载结束!"); mCz6& } w4x 8
Sre catch(Exception e){e.printStackTrace ();} pRU6jV 6e) } '|d (<.[ 3Aj_,&X.@( rqF PUp //获得文件长度 O]Kb~jkd public long getFileSize() tLvli>y@ { /ruf1?\,R int nFileLength = -1; %eV`};9 try{ %'=oMbi>i4 URL url = new URL(siteInfoBean.getSSiteURL()); Nl_;l HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); D{loX6 httpConnection.setRequestProperty("User-Agent","NetFox"); =d5!O~}r> :jUuw:\ `+f\Q2]Z int responseCode=httpConnection.getResponseCode(); Vks,3$ if(responseCode>=400) L3GJq{t { 3?%kawO& processErrorCode(responseCode); )I>rC%2P return -2; //-2 represent access is error mCE})S } UpIf t=@P 7S1!|*/
I U3V<ITZI8t String sHeader; :9`1bZ?a =#^dG''*" YpKai3 B for(int i=1;;i++) SW; bE { ZH}NlEn //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 41zeN++ //Utility.log(in.readLine()); ho20>vw# sHeader=httpConnection.getHeaderFieldKey(i); 0*AlLwO if(sHeader!=null) up1aFzY|6x { AO]lXa if(sHeader.equals("Content-Length")) |X.z|wKT6 { nB]Q^~jX nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 8;'n.SC{ break; *Qf}4a0 } YiJu48J } <R(2 9QN else P
X0#X=$ break; -J30g\ } y?JbJ } i3"sArP"| catch(IOException e){e.printStackTrace ();} {S}@P~H= catch(Exception e){e.printStackTrace ();} q
kKABow Sy'>JHx yTn@p(J Utility.log(nFileLength); </=PN1=A UZ!hk*PF &\H5*A.HkA return nFileLength; u l%bo%&~
} L%0lX$2&\ /trc&V :acQK=fe //保存下载信息(文件指针位置) !kcg#+s91 private void write_nPos() ~"mZ0E { 2o$8CR; try{ +o3g]0 output = new DataOutputStream(new FileOutputStream(tmpFile)); Z:v1?v output.writeInt(nStartPos.length); :=Q|gRTL* for(int i=0;i<nStartPos.length;i++) 16>uD;G { oB\Xl)A< // output.writeLong(nPos); 1IV
0a output.writeLong(fileSplitterFetch.nStartPos);
xAjQW= output.writeLong(fileSplitterFetch.nEndPos); SRTpE, } [:QMnJ output.close(); nX~MoWH1 } :#/bA& catch(IOException e){e.printStackTrace ();} E5(Y*m! catch(Exception e){e.printStackTrace ();} Wj:QC<5
v } )^\='(s x/7G0K2\} ?lK!OyCkc //读取保存的下载信息(文件指针位置) ay_D.gxz private void read_nPos() m%[t&^b}T { =5ih,>>g try{ FZ9<Q DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); g#4gGhI int nCount = input.readInt(); gQuw|u nStartPos = new long[nCount]; ?iX=2- nEndPos = new long[nCount]; !_9$[Oq~ for(int i=0;i<nStartPos.length;i++) Uot-@|l { `I8^QcP nStartPos = input.readLong(); j/<y nEndPos = input.readLong(); xp&!Cl>C3\ } Zir`IQ$ input.close(); <L~xR5 } XijLS7Aw| catch(IOException e){e.printStackTrace ();} ~vGtNMQg catch(Exception e){e.printStackTrace ();} RfBb{?PP) } ~TH5>``;gF fmJW d| @MB _gt)7? private void processErrorCode(int nErrorCode) 4w( vRe { $NT9LtT@K System.err.println("Error Code : " + nErrorCode); tb0E?&M } N1~V +_mM D:E~yh)$- 0f%:OU5Y //停止文件下载 X`n0b< public void siteStop() <83gn
:$ { ;q; C^l bStop = true; `4H9f&8( for(int i=0;i<nStartPos.length;i++) Qe$>Jv5 fileSplitterFetch.splitterStop(); K$cIVsfr " ^baiN@ac 'd^gRH<z } aNC,ccm } 5TneuG[OD //负责部分文件的抓取 +n[wkgFd **FileSplitterFetch.java !t
Oky */ 6KCmswvE package NetFox; *+j{9LK En9]x"_ cIvYfgIo9 import java.io.*; YC&jKx .> import java.net.*; B21AcE @JEmybu _S2^;n? public class FileSplitterFetch extends Thread { :6$4K"^1 (+LR u1z 4l}M
i String sURL; //File URL N>fYH.c3Y long nStartPos; //File Snippet Start Position 1m`tqlFU9 long nEndPos; //File Snippet End Position g!p_c int nThreadID; //Thread's ID n
[Xzo} boolean bDownOver = false; //Downing is over oPu|Q^I= boolean bStop = false; //Stop identical V$<G)dwUG5 FileAccessI fileAccessI = null; //File Access interface zQ5jx5B": z8(R.TB F|Dz]ar public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException /QXs-T}d { '?G[T28 this.sURL = sURL; 3y=<w|4F this.nStartPos = nStart; Q^Z<RA(C this.nEndPos = nEnd; c =N]!
,MO nThreadID = id; *_<*bhR< fileAccessI = new FileAccessI(sName,nStartPos);//定位 to!W={S<ol } <,pLW~2-" FPMSaN P K%c ATA3 public void run() <`xRqe:&9 { HS`bto0* while(nStartPos < nEndPos && !bStop) \8*,&ak% { #1't"R+3M 5d?!<(e6 _%Jl&0%q try{ }C{}oLz URL url = new URL(sURL);
#
5f|1O HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); [ lzy &To httpConnection.setRequestProperty("User-Agent","NetFox"); ]EM)_ :tRf String sProperty = "bytes="+nStartPos+"-"; H@2v<e@ httpConnection.setRequestProperty("RANGE",sProperty); #HM\a Utility.log(sProperty); L_gsG|xX )YnI!v2T ui56<gI- InputStream input = httpConnection.getInputStream(); Wl !!5\ //logResponseHead(httpConnection); ^KZAYB9C moVa'1ul XW~ BEa byte[] b = new byte[1024]; EK8E int nRead; \Qi#'c$5+a while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) Xrj(,| { < R|)5/9 nStartPos += fileAccessI.write(b,0,nRead); M8?#%x6;N //if(nThreadID == 1) cPx~|,)l // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); d7gH3 l } A )RI:?+ Y*kh$E%<# FU5LYXCs Utility.log("Thread " + nThreadID + " is over!");
&6\r bDownOver = true; I[g?Ju > //nPos = fileAccessI.write (b,0,nRead); urT/+deR } n~,]KdU] catch(Exception e){e.printStackTrace ();} z^P* : } Pu$kj"|q*[ } j$|j8? 4aalhy<j ^fE\ S5P //打印回应的头信息 =wIdC3Ph public void logResponseHead(HttpURLConnection con) C`2*2Y%xkG { y /X:=d6" for(int i=1;;i++) Ko$ $dkSE { QDjW!BsX3 String header=con.getHeaderFieldKey(i); FtFv<UV if(header!=null) %UUp=I //responseHeaders.put(header,httpConnection.getHeaderField(header)); W(&Go'9e" Utility.log(header+" : "+con.getHeaderField(header)); FI?gT else ]^*_F break; *`+<x } L876$ } {WYu0J@ 6z9R1&~% ,30FGz^i public void splitterStop() IS,zy+w { ;#Jq$v)D bStop = true; d,Cz-.'sOf } P\q <d )g9)IF |t4Gz1"q=8 } 4i_spF-3 !paN`Fz\a Q$xa /* n0+g]|a
AF **FileAccess.java P9
{}&z%: *//文件访问(定位,写) zB#_:(1qK package NetFox; :LZ-da"QR import java.io.*; LN@E\wRw{r N{1.gS FF%\gJ public class FileAccessI implements Serializable{ 0Y5LDP gt
=j5 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 r/mA2 RandomAccessFile oSavedFile; 8%;}LK long nPos;
E
fP>O IvEMg2f} %^a]J"Ydi8 public FileAccessI() throws IOException pT("2:)x { /^++As0pY this("",0); aL8p"iSG9 } TpJg-F ZB~l2 dV5PhP>6 public FileAccessI(String sName,long nPos) throws IOException 2wB.S_4"-< { u
iBl#J Q oSavedFile = new RandomAccessFile(sName,"rw"); p+orBw3 this.nPos = nPos; 5~@?>)TBv oSavedFile.seek(nPos); ;\<""Yj@l } |RR"'o_E J"%8:pL ! 9d_Gf- public synchronized int write(byte[] b,int nStart,int nLen) G;2R]H#p { XOu+&wOu int n = -1; H"#)&a7 try{ n11LxGwk oSavedFile.write(b,nStart,nLen); 1i4WWK7k n = nLen; h7bPAW=( } <_"B}c/2$ catch(IOException e) %9t{Z1$ { f"vk# 3 e.printStackTrace (); _,DO~L } }sf YCz }TSgAwsbC Kb^>X{ return n; vTpStoUM } fx<FIj7 8$\Za,)g t:\l&R& } GHv{ n%F-cw ID)^vwn /* `-4'/~G **SiteInfoBean.java (jMtN?&0H- */ DH:J package NetFox; dw~[9oh ypH8QfxLTr (VR"Mi4 public class SiteInfoBean { |)9thIQF #S%4? yB.G=90 private String sSiteURL; //Site's URL XcOA)'Py private String sFilePath; //Saved File's Path BU!#z(vU private String sFileName; //Saved File's Name 4avc=Y5 private int nSplitter; //Count of Splited Downloading File M ~als3 Q8;#_HE gc##V]OD public SiteInfoBean() @|BD|{k {//nSplitter的缺省值为5 ,I ZqLA //default value of nSplitter is 5 0x\2#i this("","","",5); cA<<&C } rOW;yJ[
}g>kpa0c {-HDkG' 8 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) fe|g3>/| { _lXt8}:+ sSiteURL= sURL; !x7o|l|cP sFilePath = sPath; !n eo\ sFileName = sName; |=O1Hn this.nSplitter = nSpiltter; JT04vm4 RwW$O@0 A;,Dg=FL/ } f3G1r5x 'G8 ?'u_) }S */b1 public String getSSiteURL() X]!D;7^ { W .U+.hR return sSiteURL; }z
wX } ys%zlbj[ m2(E>raV6 :k~dj C public void setSSiteURL(String value) ox[ .)v { oSY7IIf%L sSiteURL = value; y@3Q;~l, } n3$gx,KL 3C M^j<9 [/cIUQ public String getSFilePath()
Yl~$V( { Jt]&;0zn2 return sFilePath; -w]/7cH } w>[T&0-N Ns<?b;aK &RW`W)0; public void setSFilePath(String value) W pN.]x { 2 z7}+lH sFilePath = value; \0?$wIH? } U;U08/y O9^T3~x[V
WK==j1 public String getSFileName() XQ?fJWLU
{ )3%@9 return sFileName; ,?(ciO) } xQU"A2{}> MDHb'<o?y t'g^W public void setSFileName(String value) @h}`DNaZ^ { <6jFKA< sFileName = value; mI"D(bx\ } _Yq@ FOu ORBxD"J& % (<(Y public int getNSplitter() Fp%Ln(/m { Y:psZ return nSplitter; _ym"m,,7? } VEs5;]#<2D rF] +,4 aSL6zye
, public void setNSplitter(int nCount) +sf .PSz$ { c}-(. eu nSplitter = nCount; dJD(\a>r.u } W5SN I>|E } 89HsPB1"t 3^wC<ZXcD ER^QV(IvP8 /* opp!0:jS* **Utility.java q3h'l, */ $1Z6\G O package NetFox; A@$kLex rs]I Ew$I\j* public class Utility { -RMi8{ <)U4Xz ? U| 5-0 u5 public Utility() 6BAW { fS=hpL6]@ (Rd$VYuf qP1FJ89H } ;Vu5p#,O<M 41Ve}% //线程睡眠 4kl Ao$ public static void sleep(int nSecond) BKIjNV3 { )Gk`[*q ; try{ )T|L,Lp Thread.sleep(nSecond); Eu,`7iQ?( } ,6,]#R
:J catch(Exception e) fex,z%}p { 9P WY52! e.printStackTrace (); BRv x[u } x#H
3=YD* } GP a`e /*rhtrS) //日志 u2iXJmM* public static void log(String sMsg) V/%~F6e { ~Z)/RT/ System.err.println(sMsg); szmmu*F,U: } 5@!st OW@\./nM w_wslN,) public static void log(int sMsg) 7cTk@Gq { ]$b2a&r9 System.err.println(sMsg); ~nY]o"8D } K8I$]M } `[fxyg:u vbG]mMJ "TOa=Tt{, /* {XCf-{a]~ **TestMethod.java tJ0NPI56yP */ +&=?BC}L9^ package NetFox; WyhhCR=; 0JjUAxNq WT\<.Py public class TestMethod { Af(WV>' z@ 35NZn (5Nv8H8| public TestMethod() {y)s.b~JB { ///xx/weblogic60b2_win.exe X[yNFW}S2W try{ vX|UgK?2^ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); /~p+j{0L3W //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); Wr?'$: SiteFileFetch fileFetch = new SiteFileFetch(bean); c3TKl/ fileFetch.start(); !ZXUPH } ]/X(V|t catch(Exception e){e.printStackTrace ();} '@nbqM \;X+X,M 5 `/< v^ } *#
{z 3{+ KzUlTl0 RO(TvZ0pE public static void main(String[] args) ;3eKqr0 { TI|/u$SJ<Z new TestMethod(); 5VW|fI } #U
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