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/* }}2kA **SiteFileFetch.java j\vK`.z */ bXW)n<y package NetFox; vBpg6
fX import java.io.*; </%H 'V@ import java.net.*; T/K.'92S KZE.}8^%D UVLcR public class SiteFileFetch extends Thread { WY,t> 1c /;0>*ft4 h<M7[p= SiteInfoBean siteInfoBean = null; //文件信息Bean yI%>
w4Z long[] nStartPos; //开始位置 w?*KO?K long[] nEndPos; //结束位置 ]UI+6}r FileSplitterFetch[] fileSplitterFetch; //子线程对象 GKS y|z long nFileLength; //文件长度 o`U\Nhq boolean bFirst = true; //是否第一次取文件 K4yYNlY boolean bStop = false; //停止标志 2%8Y-o? File tmpFile; //文件下载的临时信息 $SXxAS1 DataOutputStream output; //输出到文件的输出流 %(Ys-GeGr b>z.d- //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) qIT{` hX public SiteFileFetch(SiteInfoBean bean) throws IOException L,Nr,QC- { J*Hn/m siteInfoBean = bean; CJOl|"UyJ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); vw]nqS~N tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ;40m goN if(tmpFile.exists ()) 9O Q4\ { ZX;k*OrW bFirst = false; =QfKDA read_nPos(); {|h"/ } h %s else $te,\$&} { nc~d*K\! nStartPos = new long[bean.getNSplitter()]; }Yl=lcvw nEndPos = new long[bean.getNSplitter()]; +E~`H^ } ?<?C*W_ %`1vIr(7 g)A0PvEu UK>=y_FYO } V^z;^mdd \#jDQ )JQQ4D public void run() RM1uYFs< { y7-:l u$9 //获得文件长度 /A.i5=k //分割文件 J_|}Xd)~t6 //实例FileSplitterFetch k#5e:VOb //启动FileSplitterFetch线程 -!>ZATL<B //等待子线程返回 X9A[
try{ 9sj W if(bFirst) AdW2o|Uap { Mgs|*u-5 nFileLength = getFileSize(); FqxOHovE if(nFileLength == -1) W+
'}O< { zZc@;S# System.err.println("File Length is not known!"); SzlfA%4+GR } %Dls36F else if(nFileLength == -2) +4g%?5' { )UZ0gfx System.err.println("File is not access!"); F]A~~P } 7 eQoc2X2 else m'(;uR` { 6q[!X0u for(int i=0;i<nStartPos.length;i++) HL}~W}!j { (g/X(3 nStartPos = (long)(i*(nFileLength/nStartPos.length)); 62l0
Z- } Ru^ ONw" for(int i=0;i<nEndPos.length-1;i++) zO5u{ { B H0#Q5 nEndPos = nStartPos[i+1]; !8@rK$DB } EKd3$(^ nEndPos[nEndPos.length-1] = nFileLength; sMS9!{A } Ipz
1+
#s' } z2Y_L8u2 ?)[zLnxc& Rs F3#H //启动子线程 n*i'v tQ8 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; NVc!g for(int i=0;i<nStartPos.length;i++) dXcPWbrU4 { q _] fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 8yWu{'G siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), k=mT! nStartPos,nEndPos,i); R=amKLD? Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ;*-@OLT_K fileSplitterFetch.start(); (}FW])y } $EQT"ZX>%i // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), N+s?ZE* siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); NB3Syl8g // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", RZ|HwYG nEndPos = " + nFileLength); 02W4-*) // fileSplitterFetch[nPos.length-1].start(); H6ky)kF& xQ#Akd= ,%?; \?b%h //等待子线程结束 mS:j$$]u //int count = 0; d{2y/ //是否结束while循环 s("Cn/ZkS boolean breakWhile = false; gVa+.x] +f
X}O9 QtnM(m while(!bStop) M9Nk=s! 3 { [+%d3+27 write_nPos(); 1 ;\]D9i Utility.sleep(500); :Hzz{' breakWhile = true; T/GgF&i3 >[|GC/C cuQ7kECV for(int i=0;i<nStartPos.length;i++) }fJ:wku { FQk_#BkK if(!fileSplitterFetch.bDownOver) V8sH{R- { .'^6QST breakWhile = false; O t *K+^I break; p.rdSv(8' } 5\akI\ } /nC{)s?S' if(breakWhile) sf |oNOz break; Rwc[:6;fn ]aC':55( yu`KzIU //count++; a=J@yK //if(count>4) QKp+;$SE' // siteStop(); a>o"^%x } qri}=du&F z5XYpi_;[ Rk($lW) System.err.println("文件下载结束!"); r{t.c?/ } ^M`>YOU2+ catch(Exception e){e.printStackTrace ();} <i\UMrD]`: } 2d-TU_JqX yz[%MXI /=8O&1=D //获得文件长度 +
,@ FxZl public long getFileSize() .S~@BI(|< { m b%C}8D int nFileLength = -1; Jj2g5={ try{ |-~b$nUe URL url = new URL(siteInfoBean.getSSiteURL());
b8rp8'M) HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); f ,tW_g httpConnection.setRequestProperty("User-Agent","NetFox"); kQ@gO[hS l6iw=b[?
^I]LoG: int responseCode=httpConnection.getResponseCode(); B$cOssl if(responseCode>=400) rHvF%o { B4`2.yRis processErrorCode(responseCode); 2 ]L=s3 return -2; //-2 represent access is error L +L9Y} } &Fw[YGJayz -glugVq 1TKEm9j]u String sHeader; V?OuIg%=: TqIAWbb& 3^{8_^I for(int i=1;;i++) d)N^PJ/ { ?#d6i$ //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ^;.T}c%N //Utility.log(in.readLine()); O/mR9[} sHeader=httpConnection.getHeaderFieldKey(i); GxxDY]! if(sHeader!=null) yH*hL0mO { lK0s=4c{ if(sHeader.equals("Content-Length")) @&;(D!_& { NwguP nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ?-pi,O~(p break; t{!/#eQC } _}D%iJg# } `)T&~2n else yH^f\u0 break; AIb>pL{ } tv0Ha A } ;(7-WnU8N catch(IOException e){e.printStackTrace ();} te i`/ catch(Exception e){e.printStackTrace ();} N#4N?BBP" +=7:4LFOL #<4--$Xo Utility.log(nFileLength); Jm4#V~w -OrR $w|e f-4.WW2FN return nFileLength; PY?8[A+ } b(l0js ld.7`) /Y,r@D //保存下载信息(文件指针位置) |m)kN2w private void write_nPos() 6gnbkpYi { OiF{3ae( try{ &iqw!
ud output = new DataOutputStream(new FileOutputStream(tmpFile)); qy
,"X)^# output.writeInt(nStartPos.length); YGp)Oy}: for(int i=0;i<nStartPos.length;i++) VevNG* { S/.^7R7{f // output.writeLong(nPos); A?8\Y{FQ output.writeLong(fileSplitterFetch.nStartPos); ,X68xk.' output.writeLong(fileSplitterFetch.nEndPos); 4 /'N|c. } sHdp output.close(); &+01+-1hW } $
KB catch(IOException e){e.printStackTrace ();} %D`o catch(Exception e){e.printStackTrace ();} :_xh(W+2< } =xL )$DTg) n*<v]1 w^HjZV //读取保存的下载信息(文件指针位置) )6-9)pH@) private void read_nPos() Z(e^ iH { hi|! try{ w2dcH4& DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ;JT(3yK4>p int nCount = input.readInt(); ut_pHj@ nStartPos = new long[nCount]; !:3.D, nEndPos = new long[nCount]; 6ZOy&fd,Ty for(int i=0;i<nStartPos.length;i++) fPqr6OYz { ~Y7dH
Dn nStartPos = input.readLong(); c?E{fD"Fc3 nEndPos = input.readLong(); `)Ky0&? } &;c>O input.close(); pK}=*y~$ } =-#G8L%Q catch(IOException e){e.printStackTrace ();} V5p0h~PK catch(Exception e){e.printStackTrace ();} n lGHT } -tLO.JK< "& 25D taWqSq! private void processErrorCode(int nErrorCode) ?X9UTOx { [
MyE2^ System.err.println("Error Code : " + nErrorCode); e,0-)?5R } $_Nf-:D* nP3 E ;11x"S //停止文件下载 vScjq5"p
public void siteStop() d`y!cu2} { @'6"7g bStop = true; *O~e
T for(int i=0;i<nStartPos.length;i++) Bc5+ss fileSplitterFetch.splitterStop(); h6:#!Rg `A@w7J' E4z)Mr# } 6 %Mt } 3=mr
"&]r: //负责部分文件的抓取 78 f$6J q **FileSplitterFetch.java ]?+{aS-]?k */ V3Z]DA package NetFox; }baR5v i3$$,W! `G9 l import java.io.*; tc+WWDP#" import java.net.*; soRv1) el 4?\:{1X= tq1CwzRX public class FileSplitterFetch extends Thread { #W>QY Tp C1kYl0zR[ ^D%Za' String sURL; //File URL $sHP\{ long nStartPos; //File Snippet Start Position QS[L~97m2M long nEndPos; //File Snippet End Position zAzP,1$? int nThreadID; //Thread's ID RE2&mYt boolean bDownOver = false; //Downing is over o\b- _E5"? boolean bStop = false; //Stop identical kYzKU2T\W FileAccessI fileAccessI = null; //File Access interface v=@TWEE ~^jq(:d) Pz*_)N}j > public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ElhRF{R { -a,-J]d0+ this.sURL = sURL; "\C$ this.nStartPos = nStart; @mP]*$00 this.nEndPos = nEnd; *iBTI+"] nThreadID = id; O/s$SX%g fileAccessI = new FileAccessI(sName,nStartPos);//定位 ^zzP. } H %JaZ?( {9Y+.46S i<kD public void run() #'D"
'B { ULrr=5&8 while(nStartPos < nEndPos && !bStop) J]lrS { gxz-R?. fZ04!R ^bg2[FV try{ #} ~qqJ G2 URL url = new URL(sURL); Unj.f>U HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ~(!XY/0e httpConnection.setRequestProperty("User-Agent","NetFox"); %VYAd)gC String sProperty = "bytes="+nStartPos+"-"; {;toI httpConnection.setRequestProperty("RANGE",sProperty); Nkxmm/Z Utility.log(sProperty); zJP6F.Ov! *n"/a{6> B~o\+n InputStream input = httpConnection.getInputStream(); 7S/G
B //logResponseHead(httpConnection); S}APQ (?_S6HE O5$/55PI byte[] b = new byte[1024]; +fvaUV_- int nRead; ?]D"k4 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) il|1a8M2~ { ee%fqVQ8P nStartPos += fileAccessI.write(b,0,nRead); MZ Aij //if(nThreadID == 1) 3 "o"fl // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); dJT]/g } ?A(QyaKz TIp:FW[ GpZc5c Utility.log("Thread " + nThreadID + " is over!"); ml \4xp, bDownOver = true; n6s}ww) //nPos = fileAccessI.write (b,0,nRead); TXe$<4" } /|xra8?H[ catch(Exception e){e.printStackTrace ();} w"R:\@ F } !9Aaj<yxm } FQ
g~l4WX CPNL
94x EwOV;>@T? //打印回应的头信息 N[k wO1 public void logResponseHead(HttpURLConnection con) PO6&bIr { @V03a
)6,h for(int i=1;;i++) )M)7"PC { V<Z[ nq String header=con.getHeaderFieldKey(i); aN"DkUYZM if(header!=null) 0GJn_@hr //responseHeaders.put(header,httpConnection.getHeaderField(header)); 76u&EG% Utility.log(header+" : "+con.getHeaderField(header)); 5nsq[Q` else v{}#?=I5 break; 7Hm3;P. } *Z|y'<s } $@UN4B?y J~#;<e{\" 6`f2-f9%iq public void splitterStop() \Gc+WpS( { tKpmm`2 bStop = true; qK)73eNSR } V0)fZS@tf F&&$Qn_+ &L^+BQ`O? } V7/I>^X $sEy%- vd8{c7g:n /* 9/nn)soC3 **FileAccess.java l5"OIq *//文件访问(定位,写) #-bA[eQV package NetFox; 7}X[
4("bB import java.io.*; t+eVR8 >Q(3*d > ub|V\M{ public class FileAccessI implements Serializable{ }mAa}{_ ONe# rKJ_ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 ;Rv!k&Df RandomAccessFile oSavedFile; o_'p3nD long nPos; h=:Q-?n- M8tRjNWS? cJrmm2.0kD public FileAccessI() throws IOException DCZ\6WY1G) { L31HGH2l this("",0); rnF/H=I/ } <WcR,d \Cii1\R= <TP=oq?I/ public FileAccessI(String sName,long nPos) throws IOException l g-X:Z. { m&?#;J|B$ oSavedFile = new RandomAccessFile(sName,"rw"); RRI"d~~F6 this.nPos = nPos; v#!%GEg1r oSavedFile.seek(nPos); %T~ig[GstX } |>#{[wko ^_f+15]D (JM5`XwM
public synchronized int write(byte[] b,int nStart,int nLen) 'nwx9]q { `5C,N!d8X int n = -1; gntxNp[9T try{ TTKs3iTXz oSavedFile.write(b,nStart,nLen); Ba!J"b] n = nLen; PBp^|t]E> } 7:2WgLo catch(IOException e) gy_>`16K { zR{W?_cV e.printStackTrace (); k<"oiCE } D/Mi^5H) 4B^ZnFJ%m `-p:vq` return n; nYX@J6! } c|#8T*`C P9vA7[ BDjn
!3 } d&+h}O < Pky9o; tQBRA/ /* ;oc&Hb **SiteInfoBean.java |563D#?cR */ <kx&w(= package NetFox; 7*?}: 9T*v9d rv|)n>m public class SiteInfoBean { )3>hhuaa <psZQdH :R~MO& private String sSiteURL; //Site's URL ~V\D|W9 private String sFilePath; //Saved File's Path w.\&9]P3~ private String sFileName; //Saved File's Name n\^Tq<] a private int nSplitter; //Count of Splited Downloading File \Ol kM< `0Oh_8" Jz2N public SiteInfoBean() "-+\R}q$ {//nSplitter的缺省值为5 ,f[>L|?e //default value of nSplitter is 5 [O?z@)dx this("","","",5); 2(#7[mgPI } "-vW,7y j'MO(ev 9f<MQ6_UU public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) v%iof1 T'
{ YJJB.hR+ sSiteURL= sURL; 5
4L\Jx sFilePath = sPath; AMyIAZnYq) sFileName = sName; V 7Ek-2M this.nSplitter = nSpiltter; }x07^4$j c'S,hCe*
(q(~de } ]Ccg`AR{ 'a\%L:` %)0*&a 4 public String getSSiteURL() U'<KC"f:'! { B4i!/@0s return sSiteURL; {z")7g ]l } Y]B)'[=h ".<DAs j <U!`J[n% public void setSSiteURL(String value) *fn*h[pV& { IHcD*zQ sSiteURL = value; l@\#Ywz } 8q,6}mV
3tZ]4ms} 3<
2}V public String getSFilePath() VrxQc qPr` { Zf65`K3 return sFilePath; SBIj<Yy] } ?C&z]f3(: ~e+\k>^eN @AIaC-,~] public void setSFilePath(String value) RIY,K*f. { #nK>Z[ sFilePath = value; +gJ8{u!=k } k=4N.*#`y /p+>NZ"b H\:lxR^ public String getSFileName() s3R(vd { p%*%n3bw return sFileName; jO1r)hw N> } nysUZB
O"c;|zCc> 06N}k<10O public void setSFileName(String value) Z`KC%!8K { 3
%|86:* sFileName = value; &'}RrW-s } fM^qQM[lG .tzG_ o8-^cP1 public int getNSplitter() j+["JXy { 7w/4QiI return nSplitter; 4bw4cqY; } jkt_5+S w &(|e < S>]pRV9rT public void setNSplitter(int nCount) b7wvaRe. { _;UE9S% nSplitter = nCount; {yB&xj[z } #R.-KUW: } U~j
^I^ twlk-2yT! MgNU`` /* Ksy -e{n **Utility.java dK2p7xo */ T3pmVl package NetFox; kMt 8/ E` "t_-f7fS7 e[/dv)J public class Utility { _G.>+!"2/
2VJR$Pao J1:1B,^y public Utility() <c,u3cp { vbD{N3p)?n HO}Hh[{V9 V` 1/SQX } q~vDz]\G /gu%:vq //线程睡眠 j(k:
@ public static void sleep(int nSecond) 8qEVOZjV& { -OA?BEQ=I try{ PX
n;C/ Thread.sleep(nSecond); Bxfc}vC. } YA
+E\ catch(Exception e) m:WyuU< { ,;Hu=; e.printStackTrace (); - qy6Un+ } PUBWZ^63 } |<.lW Qe}`~a9P //日志 J<dVTxK12 public static void log(String sMsg) 3+G@g#MY { 7qg{v9|, System.err.println(sMsg); EVVP]ND } X'`~s}vGO :SGF45>B@ 3`ELKq public static void log(int sMsg) kMOpi =Z1 { v%s`~~u%^ System.err.println(sMsg); , 'ZD=4_ } ,XIz?R>;c } OZTPOz. dUF&."pW e ;r>snJ=M /* MV\|e1B} **TestMethod.java bBS,-vN */ 8-_QFgY package NetFox; 2cq I[t@0 Z6_N$Z.A AQ+]|XYo_ public class TestMethod { <X7FMNr[ &*7?)eI!i j^;I3_P public TestMethod() KA){''>8 { ///xx/weblogic60b2_win.exe z-LB^kc8oQ try{ @:U+9[ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); qd#sY.|1 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); }p!HT6 tZ SiteFileFetch fileFetch = new SiteFileFetch(bean); fVt9X*xKS fileFetch.start(); F^5?\ } q@@T]V6 catch(Exception e){e.printStackTrace ();} VGceD$< 8g:;)u4$P n%k!vJ)] } xZQg'IT =9z[[dQ|L H]$)Eg%6 public static void main(String[] args) F6K4#t+9 { +> WM[o^I new TestMethod(); 05spovO/' } r4QxoaM } EC\yzH*X 点击下载更多相关资料
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