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/* T@n};,SQ **SiteFileFetch.java Y"m}=\4{ */ FJW,G20L package NetFox; i&)OJy import java.io.*; T~?&hZ> import java.net.*; m*KI'~#$% G12o?N0p %F:; A public class SiteFileFetch extends Thread { g12.4+ T[J8zLO /\E3p6\* SiteInfoBean siteInfoBean = null; //文件信息Bean nD=N MqQ & long[] nStartPos; //开始位置 1IK*j+% long[] nEndPos; //结束位置 F 9q!Upr_+ FileSplitterFetch[] fileSplitterFetch; //子线程对象 LftGA7uGJ) long nFileLength; //文件长度 Ve40H6Ox boolean bFirst = true; //是否第一次取文件 ]2iEi`"[ boolean bStop = false; //停止标志 W4nhPH( File tmpFile; //文件下载的临时信息 ;g<y{o"Q3p DataOutputStream output; //输出到文件的输出流 OgCNqW
d- bhfC2@ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) N#X*
0i" public SiteFileFetch(SiteInfoBean bean) throws IOException i> {0h3Y { @U =~c9 siteInfoBean = bean; w+XwPpM0.n //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); [o
6 tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ?rdWhF] if(tmpFile.exists ()) %+C6#cj { pM*(
kN bFirst = false; RiIafiaD read_nPos(); >#Bu [nD% } ]tmMk7 else veS)
j?4 { X 0LC:0+ nStartPos = new long[bean.getNSplitter()]; VpED9l]y nEndPos = new long[bean.getNSplitter()]; M L7 vP } +\>op,_9I WkPT6d ._&SS,I5VZ LO38}w<k } Y&$puiH-j x l=i_ &Cr4<V6-q public void run() Z55C4F5v { &=wvlI52` //获得文件长度 ]?Q<lMG //分割文件 >g{b'Xx //实例FileSplitterFetch /!*=* //启动FileSplitterFetch线程 pLMaXX~4_ //等待子线程返回 LQ||7>{eX try{ gYmO4/c,
if(bFirst) [?2,(X0yh1 { KfQR(e9n nFileLength = getFileSize(); $JiypX^DOP if(nFileLength == -1) ]y"=/Nu-Ja {
.P ??N System.err.println("File Length is not known!"); ,!P}Y[| } bb-u'"5^] else if(nFileLength == -2) O! _d5r&, { Z,8t!Y System.err.println("File is not access!"); *lQa^F } CKC5S^Mx else pxW*kS { R
pT7Nr for(int i=0;i<nStartPos.length;i++) @Z<Z//^k { XS.*CB_m_ nStartPos = (long)(i*(nFileLength/nStartPos.length)); vr_Z0]4`C9 } bP4}a!t+n for(int i=0;i<nEndPos.length-1;i++) 4"\%/kG { WzBr1
ea{I nEndPos = nStartPos[i+1]; :kd]n$] } v8C4BuwA nEndPos[nEndPos.length-1] = nFileLength; 7'|aEH } t8*NldC } }?sC1]-j& y!_8m#n S 3kVN[0 //启动子线程 6wZ)GLW[ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; =RQI5nHdw for(int i=0;i<nStartPos.length;i++) $\PU Y8 { as[! 9tB] fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), F#.ph?W siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Hk=HO|&<XB nStartPos,nEndPos,i); r4b-.>w Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); S7~HBgS< fileSplitterFetch.start(); }eveNPB{5 } >G As&\4hs // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), .-Dc%ap] siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); al7D3J // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", >qd=lm <, nEndPos = " + nFileLength); buhbUmQ2 // fileSplitterFetch[nPos.length-1].start(); NnaO!QW% K@a#^lmd xT!<x({ //等待子线程结束 QH?sx k2 //int count = 0; Bi>]s%zp //是否结束while循环 _7dp(R boolean breakWhile = false; ,,lR\!>8 "CZv5) uJ0Wb$% while(!bStop) }^^c/w_ { "+Sq}WR write_nPos(); _z9~\N/@[ Utility.sleep(500); F6C7k9 breakWhile = true; |f(*R_R "akAGa!V+ lR]FQnZ for(int i=0;i<nStartPos.length;i++) @|e
we.r { kU.@HJ[@j if(!fileSplitterFetch.bDownOver) Qraa0]56 { #qeC)T breakWhile = false; 6E.[F\u break; s-~`Ao'
< } DgB;6Wl } _/Ay$l;F if(breakWhile) `g0^W/j break; ES8(:5 \r [@A3O ]bYmM@
//count++; g1(5QWb //if(count>4) +[4y)y` // siteStop(); U]g9t<jD } ab]Q1kD hFxT@I~ wc&D[M]-/ System.err.println("文件下载结束!");
7NnXt' } A;o({9VH`Z catch(Exception e){e.printStackTrace ();} ~ H/ZiBL@ } >qmNT/ DfVJ~,x~ O- LwX
> //获得文件长度 M }q;\} public long getFileSize() '`f+QP=` { C
&y
2I int nFileLength = -1; c;zk{dP try{ OXn-!J90P URL url = new URL(siteInfoBean.getSSiteURL()); O,S>6o)? HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); UT[{NltH httpConnection.setRequestProperty("User-Agent","NetFox"); $xcZ{C ;'
H\s [JV?Mdzu int responseCode=httpConnection.getResponseCode(); 4t3>`x
7 if(responseCode>=400) s!>9od6^ { W=OryEV? processErrorCode(responseCode); (@;^uVJP return -2; //-2 represent access is error < RtyW } m9+?>/R PZlPC#E- bm4Bq>*=U String sHeader; kE|x'(x #)]/wqPoW mIqm/5 for(int i=1;;i++) =E^/gc%X { I5`>XfO) //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); G;EJ\J6@Yw //Utility.log(in.readLine()); 23 #JmR sHeader=httpConnection.getHeaderFieldKey(i); t*H|*L#YR if(sHeader!=null) ^7Z;=]8J { %b2Hm9r+ if(sHeader.equals("Content-Length")) e,lLHg { ]E'?#z.t nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); !nlr!+(fV break; L
4Z+8* } {F S)f } #;?/fZjY else q8FpJ\ break; rS8\Vf]F } 'GiN^Y9dcc } .w'b%M catch(IOException e){e.printStackTrace ();} -=5~-72~ catch(Exception e){e.printStackTrace ();} ?/-WH?1I ]cVDXLj$ DbX7?Jr Utility.log(nFileLength); ]yL+lv ;jN1n
xF =1'WZp}D5 return nFileLength; bf{_U%` } ,np|KoG|M 5FF28C)>/ 65*Hf3~~ //保存下载信息(文件指针位置) w{So(AF private void write_nPos() Q1rEUbvCE { '> n&3`r5 try{ hw*u. 46 output = new DataOutputStream(new FileOutputStream(tmpFile)); *c&OAL] output.writeInt(nStartPos.length); LZ.Xcy for(int i=0;i<nStartPos.length;i++) A1`6+8}o;b { aw~h03R_Z // output.writeLong(nPos); *::.Uo4O output.writeLong(fileSplitterFetch.nStartPos); ,v#n\LD` output.writeLong(fileSplitterFetch.nEndPos); dUl"w`3 } kqxq'Aq)d output.close(); pl)?4[`LUc } AO|1m$xf catch(IOException e){e.printStackTrace ();} wu`+KUx catch(Exception e){e.printStackTrace ();} U^% )BI } Fq5u%S !
Vlx I,HtW ), //读取保存的下载信息(文件指针位置) e6
x#4YH private void read_nPos() /e^) *r { )N607 Fa- try{ 5MKM;6cA&p DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); |v5
ge3- int nCount = input.readInt(); ~I%164B+/ nStartPos = new long[nCount]; nZ (wfNk nEndPos = new long[nCount]; =&qH%S6 for(int i=0;i<nStartPos.length;i++) >5"e<mwD7d { E)f9`][ nStartPos = input.readLong(); f?ibyoXL nEndPos = input.readLong(); 8oXp8CC } qswC>Gi input.close(); (
^@i(XQ } '}B"071)< catch(IOException e){e.printStackTrace ();} 1s(]@gt catch(Exception e){e.printStackTrace ();} ~K99DK. } M_.Jmh<&& m%>}T75C^ _nEVmz!zg private void processErrorCode(int nErrorCode) ;134$7!Y { +zq"dj_ System.err.println("Error Code : " + nErrorCode); 3S2Alx!6 } #7}M\\$M ZH8 w^} (_CvN=A //停止文件下载 ^FBu|eAkE public void siteStop() CSq|R-@<U { ?Tu=-ppw bStop = true; &}7R\co3 for(int i=0;i<nStartPos.length;i++) JtxVF!v fileSplitterFetch.splitterStop(); EzjK{v"> N5ZOpRH{ 1_v\G } _z{9V7n4 } vNuws_ //负责部分文件的抓取 ITTEUw~+o **FileSplitterFetch.java EG$-D@o\I */ W6i9mER- package NetFox; W*CRxGyZCl VwZ~ntk ;in-)`UC! import java.io.*; :yJ([ import java.net.*; cfa1"u""e B@0#*I
Rm ~> lqEa public class FileSplitterFetch extends Thread { Bp5ra9*5+~ 9+s&|XS* |9IOZ>H9 String sURL; //File URL l&e$:=;8 long nStartPos; //File Snippet Start Position 3oH/34jj long nEndPos; //File Snippet End Position q*`
m%3{ int nThreadID; //Thread's ID qQG? k~r boolean bDownOver = false; //Downing is over ~u2f`67{ boolean bStop = false; //Stop identical ruB D
^- FileAccessI fileAccessI = null; //File Access interface g<M!]0OK C58o="L3S j>:N0:
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 7Re\*[)T { CMOyK^(e this.sURL = sURL; .74C~{}$ this.nStartPos = nStart; Pmd[2/][ this.nEndPos = nEnd; 0H^*VUyW/ nThreadID = id; Fb8d=Zc fileAccessI = new FileAccessI(sName,nStartPos);//定位 hhZ%{lqL } " M?dU^U^ .Wy' PuGs%{$(h public void run() &Mudu/KTr { H)gc"aRe;Y while(nStartPos < nEndPos && !bStop) 5|K[WvG@Co { "G.X=,
V U4K ZPk Cb+$|Kg/"b try{ "0#(<zb| URL url = new URL(sURL); !bYVLFp=\_ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Ry]9n.y httpConnection.setRequestProperty("User-Agent","NetFox"); QSa#}vCp* String sProperty = "bytes="+nStartPos+"-"; R2-F@_ httpConnection.setRequestProperty("RANGE",sProperty); 3e1-w$z&S Utility.log(sProperty); {j]cL!Od 43M.Hj] bo\Ah/. InputStream input = httpConnection.getInputStream(); Q*PcO \Y!y //logResponseHead(httpConnection); w?|qKO ;
YQB SE^l`.U@ byte[] b = new byte[1024]; :?g+\:`/0j int nRead; ,@?9H ~\ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) };9s8VZE { ,h'Q nStartPos += fileAccessI.write(b,0,nRead); iCg%$h //if(nThreadID == 1) e"eIQI|N // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); E7? n'!= } j<0;JAL {2P18&=
ux(~+<k Utility.log("Thread " + nThreadID + " is over!"); `pZX!6Wn bDownOver = true; Z.Z;p/4F //nPos = fileAccessI.write (b,0,nRead); C`kqsK } ~//E'V- catch(Exception e){e.printStackTrace ();}
wLqj<ot }
J@_^] } _",(!( L@6]~[JvP KhB775 //打印回应的头信息 ^GY^g-R public void logResponseHead(HttpURLConnection con) O)VcW/ { 5!qf{4j for(int i=1;;i++) *p\Zc*N;% { ;)CN=J! String header=con.getHeaderFieldKey(i); O(8CrKYY if(header!=null) u_9c> //responseHeaders.put(header,httpConnection.getHeaderField(header)); ui#nN Utility.log(header+" : "+con.getHeaderField(header)); .Hqq!& else 5=
&2= break; kG!hqj } xlwf @XW } T:{r*zLSN [(#)9/3, # M/n\em"X public void splitterStop() 'hBnV xd& { !JrKTB% bStop = true; hZ
e{Ri } 5yoi;$~}_0 M NwY
f7Nmvla[q } Ul]7IUzsu `j)56bR W5`p Qdk /* ?VE'!DW **FileAccess.java l_:P| *//文件访问(定位,写) Nr>UZlU8 package NetFox; b:Zh|- import java.io.*; c]#}#RJ`\ *.>@ -sJD:G,% public class FileAccessI implements Serializable{ bs~P C@`#@1X //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Icg-rwa<Z RandomAccessFile oSavedFile; b,~pwbHf long nPos; ^t
gjs$M| -`\rDPGf E#rQJ public FileAccessI() throws IOException vMou`[\WlJ { ,s3| this("",0); 6&SNFOX{@ } zytN leyc ^" ?a)KC
{q8|/{; public FileAccessI(String sName,long nPos) throws IOException :+jg311} { `&q+ f+z oSavedFile = new RandomAccessFile(sName,"rw"); {u1|`=; this.nPos = nPos; Lr*PbjQDIY oSavedFile.seek(nPos); :K2
X~Ty } $#D#ezvxe ~"`e9Im mp$IhJ6# public synchronized int write(byte[] b,int nStart,int nLen) `Pj7:[."[ { er3~gm int n = -1; ^lV}![do! try{ V>)/z|[ oSavedFile.write(b,nStart,nLen); MSM8wYcD n = nLen; dyn)KDS } ~%>i lWaHB catch(IOException e) *'8q?R?7g { dNt^lx e.printStackTrace (); vkGF_aenk } |wuTw| \X*y~)+K` LZ_VLW9wE return n; ,S`n?.&& 7 } 5O]tkHYR
p )JR5z @Drl5C}+ } SQK82/ 8ly)G K(upzn*a /* us|Hb **SiteInfoBean.java 1DcBF@3sWG */ >^g2Tg: package NetFox; QEt"T7a[/ (jU_lsG UwS7B~ public class SiteInfoBean { Iga+8k Y2l;NSWU 8o|C43Q_ private String sSiteURL; //Site's URL ;AOLbmb)H4 private String sFilePath; //Saved File's Path =bD.5,F) private String sFileName; //Saved File's Name uNuFD|aQ. private int nSplitter; //Count of Splited Downloading File T=-UcF y-.{){uaD \v-I<":: public SiteInfoBean() au50%sA~
{//nSplitter的缺省值为5 U'" #jT //default value of nSplitter is 5 [#@lsI this("","","",5); %zGv+H? } y$-@|M$GG }W 5ks-L6 u5ZyOZ; public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) @u/CNx,`X { l@GJcCufE sSiteURL= sURL; hE=xS:6 sFilePath = sPath; OV;VsF sFileName = sName; "A
Bt this.nSplitter = nSpiltter; T_Tu>wQX !~?/D "0PsCr}! } {u
y^Bui} b?`2LAgn #|je m public String getSSiteURL()
$6UU58>n { jcj8w return sSiteURL; N}n3 +F } CQ6I4k H0"'jd Wm-$l public void setSSiteURL(String value) %D#&RS { <v -YMk@ sSiteURL = value; y(g]:# } M.y!J
Ddq*}Pf0K J2x}@p public String getSFilePath() 9b=0
4aWHm { Z|*#)<|~ return sFilePath; l9|K,YVW } E]n]_{BN] HEFgEYlO T8g\_m public void setSFilePath(String value) O0'|\:my { O6?{@l sFilePath = value; IYq#|^)5+ } =C,DR4xh 0^V<,CAV 7NT}
Zwf public String getSFileName() a"YVr'| { 9jf9u0 return sFileName; V]J"v#!{ } D<FQVdP WynTU? .^=I&X/P public void setSFileName(String value) u(1m#xr8$ { dDl+ sFileName = value; :35h0;8+ } @a]cI 3t+{~{Dj 9Cd/SlNV2 public int getNSplitter() BQWgL { KxKZC}4m return nSplitter; N{g7 } ,m`&J? E)m \KSwh Dx /w&v public void setNSplitter(int nCount) \H>T[ { ,_(=w.F
nSplitter = nCount; ~cp=B>*( } *LBF+L^C% } nkPlfH \9p.I?= [I%eRo[ /* Jxe 5y3*
( **Utility.java #y#TEw, */ X1P1
$RdkR package NetFox; 4.,|vtp ] +%`WCr9 z6M5'$\y public class Utility { ^, =}'H] ~28{BY
[>GblL public Utility() v `/nX-> { cu?6\@cD Xp<O %KO8i)n } 5s^vC2$) Wx3DWY; //线程睡眠 lt4IoE`tk? public static void sleep(int nSecond) _z%\53h { V+1c<LwT try{ r0k:RJP Thread.sleep(nSecond); x1wD`r } H(n
fHp.3 catch(Exception e) S"Vr+x? { *^] e.printStackTrace (); ~2hzyEh } Q`J U[nY } W?E01"p y=\&z&3$ //日志 :tFcPc' public static void log(String sMsg) e^\(bp+83
{ ]6v7iuvI System.err.println(sMsg); xv$fw> } LC=M{\
K%%Ow 3`SH-"{j% public static void log(int sMsg) %jj-\Gz! { )ZLj2H < System.err.println(sMsg); !p\
@1? } /J-.K*xKt } &,p6lbP K($+ILZ })@xWU6! /* C<:wSS^@1 **TestMethod.java 0# 1~'e */ P;y!Y/$ C package NetFox; ^=-25%&^ lws.;abm%n !}P^O(oY public class TestMethod { @/As|) D.7cWR`Wp B(71I; public TestMethod() |uFb(kL[U { ///xx/weblogic60b2_win.exe l#ct;KZ try{ g1F9IB42@< SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); nw*a?$S3 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); {s*1QBM$\Z SiteFileFetch fileFetch = new SiteFileFetch(bean); ~a7@O^q4 fileFetch.start(); \hlS?uD\ } h
Ks
catch(Exception e){e.printStackTrace ();} Wn;%B].I '^7Z]K <v G~&q
} :G9d,B7* dwvc;f- vfc5M6Vm)< public static void main(String[] args) H
9/m6F { er
1zSTkg new TestMethod(); `3K."/N6c } IYptNR } UZiL NKc 点击下载更多相关资料
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