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/* ur3(HL **SiteFileFetch.java Hw7;;HK
7 */ Z)! qW? package NetFox; G!"YpYml import java.io.*; d*jMZ%@uS import java.net.*; wj,:"ESb4 @CTgT-0! Yn@lr6s public class SiteFileFetch extends Thread { :K-~fA%kt? Q?nN!eT U*i{5/$ SiteInfoBean siteInfoBean = null; //文件信息Bean ;*Ivn@L long[] nStartPos; //开始位置 oE+R3[D?r long[] nEndPos; //结束位置 2^y^q2(r FileSplitterFetch[] fileSplitterFetch; //子线程对象 <}E!w_yi long nFileLength; //文件长度 pnjXf.g"O boolean bFirst = true; //是否第一次取文件 C1jHz boolean bStop = false; //停止标志 /DK"QV!]s File tmpFile; //文件下载的临时信息 mzeY%A<0^ DataOutputStream output; //输出到文件的输出流 bL'aB{s Jll-`b 1 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) P*
w9, public SiteFileFetch(SiteInfoBean bean) throws IOException }\%Fi/6Z{ { K%a%a6k` siteInfoBean = bean; Km(n7Ah" //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); $"FQj4%d tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ;%<,IdhN if(tmpFile.exists ()) 6kNrYom { !9[>L@#G bFirst = false; )+[ gd/<C. read_nPos(); P0W*C6&71| } *pSQU=dmS else [3(74 { +Af"f' ) nStartPos = new long[bean.getNSplitter()]; W+PJZn nEndPos = new long[bean.getNSplitter()]; x c/}#>ED } E7.2T^o;M P>s[tM !ePr5On XZsz/# } mVVD! +3BBQ+x! 8zRP(+&W public void run() sejg&8 { )/pU.Z/ //获得文件长度 zG ^$"f2 //分割文件 \HKxh:F' //实例FileSplitterFetch MRb-H1+Xf //启动FileSplitterFetch线程 vR s,zL$W //等待子线程返回 d/[;
`ZD+ try{ SZ,YS
4M if(bFirst) -=~| ."O { ~$)2s7
O nFileLength = getFileSize(); {OXFN;2 if(nFileLength == -1) ,q}MLTSi { H@q?v+2 System.err.println("File Length is not known!"); U*22h` S } ujlY!-GM else if(nFileLength == -2) _H j!2 ' { Xs~[& System.err.println("File is not access!"); 2w["aVr
= } $wo?!gt else }T&iewk { NYrQ$N" for(int i=0;i<nStartPos.length;i++) v6>_ j
L { {ys=Ndo8 nStartPos = (long)(i*(nFileLength/nStartPos.length)); {u#;?u=| } +kzo*zW$L for(int i=0;i<nEndPos.length-1;i++) j@SQ~AS { $npT[~U5
nEndPos = nStartPos[i+1]; Dp)=0<$y } sg$rzT-S4 nEndPos[nEndPos.length-1] = nFileLength; Tk5W'p|6f } _F$aUtb%O } Dpl A? .P[ _<8 thifRd$4 //启动子线程 :_g$.h%% fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; yXHUJgjl/ for(int i=0;i<nStartPos.length;i++) KY51rw. { [n \2 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ]Q>.HH siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), m 8aITd8 nStartPos,nEndPos,i); [8T^@YN Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); :9QZPsL fileSplitterFetch.start(); 2zs73:z } 1Cgso` // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), v^d]~!h siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); CF?1R // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", (O.d> nEndPos = " + nFileLength); v7iuL6jl // fileSplitterFetch[nPos.length-1].start(); C-\S/yd DXJ`oh 23Nw!6S //等待子线程结束 7?GIS ' //int count = 0; -uMSe~ //是否结束while循环 #~C]ZrK boolean breakWhile = false; $ZugBh[b Rb%8)t
x G!>z;5KuS while(!bStop) +yk24
`> { 19E8'@ write_nPos(); tt0f-:# Utility.sleep(500); @zU6t|mhz breakWhile = true; .J)I | ' 6W]9$n\"? ABD)}n=%c for(int i=0;i<nStartPos.length;i++) ?0v-qj+ { NbgK@eV}+{ if(!fileSplitterFetch.bDownOver) i{`FmrPO~ { $a
]_w.@ breakWhile = false; JM x>][xD break; pe] A5\4c } 60J;sGW } G9xmmc if(breakWhile) _B/dWA,P break; 2jR r,Nl "4riSxEyF }o(zj=7 //count++; MvK !u //if(count>4) PIu1+k.r? // siteStop(); yku5SEJ\ } 0
q}*S~ vms|x wb $~VRza 8Q System.err.println("文件下载结束!"); JtEo'As:[ } 1IC~e^" catch(Exception e){e.printStackTrace ();} 5ni~Q 9b } T
6)bD& b{L/4bu r:f[mk"-"A //获得文件长度 S-
pV_Ff public long getFileSize() K/i*w<aPb7 { `6lr4Kk @R int nFileLength = -1; V^3L3|k try{ r'^Hg/Jzt URL url = new URL(siteInfoBean.getSSiteURL()); G,o6292hj HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); E"qRw_
~t httpConnection.setRequestProperty("User-Agent","NetFox"); &cxRD Y9uC&/_C $c]fPt"i int responseCode=httpConnection.getResponseCode(); D^l%{IG
if(responseCode>=400) ,z;cbsV-{ { ]P.'>4 processErrorCode(responseCode); :=u?Fqqws return -2; //-2 represent access is error xe{!wX } %E#s\B,w _ba>19csq% +jS|2d String sHeader; Sdt`i NdMb)l)m nuk*.Su for(int i=1;;i++) NidIVbT.A { v|uAzM{73 //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ABQ('#78 //Utility.log(in.readLine()); oW ::hB sHeader=httpConnection.getHeaderFieldKey(i); s5CXwM6cx if(sHeader!=null) 7
n8"/0kc: { fI&t] if(sHeader.equals("Content-Length")) U>]$a71 { &;^YBW :I nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); }=< break; YC++&Nk } ;j[>9g } h"X;3b^ m else .E`\MtA break; X:HacYqtC } T ]t'39 } i,>khc catch(IOException e){e.printStackTrace ();} hIy ~B[' catch(Exception e){e.printStackTrace ();} &J[:awQX 63\/ *
NNB %zG;Q@ Utility.log(nFileLength); w65K[l;2 K2TcOFQ J] {QB^? return nFileLength; ]^h]t~ } Uwf+ yv t. ]A~WIF //保存下载信息(文件指针位置) >V-A;S: private void write_nPos() [@VP?74 {
}Yb[ try{ ^E;kgED5 output = new DataOutputStream(new FileOutputStream(tmpFile)); U#lCj0iUt, output.writeInt(nStartPos.length); IwQ"eUnK for(int i=0;i<nStartPos.length;i++) eD,.~Y#?= { _zY#U9 // output.writeLong(nPos); FHj"
nB output.writeLong(fileSplitterFetch.nStartPos); ur)9x^y output.writeLong(fileSplitterFetch.nEndPos); Of*Pw[vD } 4 ezEW|S output.close(); _
TiuY } ] eotc2?u catch(IOException e){e.printStackTrace ();} jyZ (RB catch(Exception e){e.printStackTrace ();} bo2H]PL* } = bfJ^]R B^4&-z2| E{XH?_xo //读取保存的下载信息(文件指针位置) |XQIfW]A private void read_nPos() 'GNK "XA^ { SheM|I~de try{ \H1(PA DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); \y97W&AN int nCount = input.readInt(); J"!vu.[ nStartPos = new long[nCount]; \hTm)-FP nEndPos = new long[nCount]; mk;&yh for(int i=0;i<nStartPos.length;i++) 4w*Skl=F} { fz|cnU nStartPos = input.readLong(); IHB}`e| nEndPos = input.readLong(); 3eb%OEMYk } Si_ _8D input.close(); Z"/p,A9W9| } uZNTHD catch(IOException e){e.printStackTrace ();} }JF13beU catch(Exception e){e.printStackTrace ();} 3
}duG/ } \nXtH}9ZF =$u!
59_dE <CS(c|7 private void processErrorCode(int nErrorCode) l{5IUuUi { "sS}N%! System.err.println("Error Code : " + nErrorCode); bGN:=Y' } 6Y^23W F &*##bA"!B Vx$ \hcG //停止文件下载 WJQvB=D& public void siteStop() +9M^7/}H { :0Bq^G"ge bStop = true; \HqNAE2T for(int i=0;i<nStartPos.length;i++) t)~"4]{*}D fileSplitterFetch.splitterStop(); @@R7p tI`Q /a5@ BBaQ}{F8>2 } *1uKr9 } o*-)Tq8GHE //负责部分文件的抓取 U_M$#i{_ **FileSplitterFetch.java Z?6%;n^ 54 */ @3) (BpFe package NetFox; dzARI` J1,9kCO (/z_Q{"N import java.io.*; E%yNa]\P import java.net.*; o*b] p- *QpMF/<? SON-Z"v public class FileSplitterFetch extends Thread { +NeOSQSj \.0^n3y VU#`oJ:{ String sURL; //File URL X.OD`.!> long nStartPos; //File Snippet Start Position q8FTi^=Kb long nEndPos; //File Snippet End Position 0pK=o"^?@ int nThreadID; //Thread's ID 7S-ys+ boolean bDownOver = false; //Downing is over MDnKX?Y boolean bStop = false; //Stop identical G/k2Pe{SL FileAccessI fileAccessI = null; //File Access interface vleS2-]| XeW<B0~ 6g2a[6G5 public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException S'k_olx7 { I&2c&yO this.sURL = sURL; H['N this.nStartPos = nStart; Vy6qbC-Kt this.nEndPos = nEnd; VyXKZ%\dQ/ nThreadID = id; _G[g;$< fileAccessI = new FileAccessI(sName,nStartPos);//定位 i5en*)O8 } ~FZ&.<s
xu>9(,l
-?H#LUk public void run() &b.=M>\9Q { ?ME6+Z\ while(nStartPos < nEndPos && !bStop) [glLre^ { oL!EYbFD'Z 5-|:^hU9 ,-$LmECg try{ ,g%0`SO URL url = new URL(sURL); $ZUdT HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 18|m)(W httpConnection.setRequestProperty("User-Agent","NetFox"); '<jyw String sProperty = "bytes="+nStartPos+"-"; u#Pa7_zBj] httpConnection.setRequestProperty("RANGE",sProperty); #pT"BSz] Utility.log(sProperty); Vrjc~>X \MsTB|Z ]}Mj)J" m InputStream input = httpConnection.getInputStream(); p09HL%~R //logResponseHead(httpConnection); 3r<~Q7e X@'uy<tI- Qk0R a_ byte[] b = new byte[1024]; spGb!Y`mR int nRead; HD@$t)mn while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) )YYf1o[+ { /1Qr#OJ(] nStartPos += fileAccessI.write(b,0,nRead); BTlk
E tm //if(nThreadID == 1) HeK/7IAqp // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); c%^7!FSg } 7G:s2432 AhCW'. )s)I2Z+ Utility.log("Thread " + nThreadID + " is over!"); 4qphA9i1 bDownOver = true; h(<,fg1 //nPos = fileAccessI.write (b,0,nRead); /vY(o1o
x } _- [''(E catch(Exception e){e.printStackTrace ();} o906/5M } bH-ub2@qO } P#E &|n7DT Yab%/z2: _A M*@|p, //打印回应的头信息 l3KVW5-!gS public void logResponseHead(HttpURLConnection con) kj|6iG { 8|b3j^u for(int i=1;;i++) 2;[D;Y} { P]<4R:yb String header=con.getHeaderFieldKey(i); so^lb?g if(header!=null) :#2Bw]z&z //responseHeaders.put(header,httpConnection.getHeaderField(header)); eeIhed9
Utility.log(header+" : "+con.getHeaderField(header)); g!cUF+ else })uGRvz break; KgV3j]d } *?o{9v5}( } %?LOs
H jNu9KlN !GOM5z, public void splitterStop() [N1hWcfvd { h"`ucC8X bStop = true; )S`jFQ1 } W>!_|[a UU'|Xz9~ :iFIQpk } wNq;;AJ$ p/(~IC"!J BLN^ <X/ /* .b\$MZ"( **FileAccess.java 8iW;y2qF *//文件访问(定位,写) 0$_oT;{8 package NetFox; M@h|bN import java.io.*; ~i@Y|38C r~+\
Y"rM "nm FzN public class FileAccessI implements Serializable{ b'P eH\h{ K6y :mJYp\ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 ZPc@Zr`z RandomAccessFile oSavedFile; $f,n8]
long nPos; MWI4Y@1bS BQBeo&n6 )Y]{HQd public FileAccessI() throws IOException 0~HKiH- { pX/n)q[ this("",0); cKN$ =gd } !l_lo`) .U"8mP=& I96Ci2)m public FileAccessI(String sName,long nPos) throws IOException :`E8Z:-R { Q9Uf.Lh2 oSavedFile = new RandomAccessFile(sName,"rw"); ;=geHiQHA this.nPos = nPos; fR)m%m oSavedFile.seek(nPos); 6}4'E } z ?[r }K1JU`Lz "8~:[G# public synchronized int write(byte[] b,int nStart,int nLen) !l|5z G
{ 8i|w(5m; int n = -1; n8uv#DsdK try{ Y7#-Fra0W oSavedFile.write(b,nStart,nLen); Na$Is'F&p n = nLen; b8$gx:aJ>$ } CSGz3uC2D catch(IOException e) Rp*R:3
C { ~ zil/P8 e.printStackTrace (); RletL) } QYa(N[~a %)[+%57{ lZyG)0t,g return n; @[#$J0qq } s
<
W?0 lV5/ qb5#_1qz+^ } ysmNio ?pYKZg/c %STliJ /* %|^OOU} **SiteInfoBean.java
)x}l3\s */ %{(x3\ *& package NetFox; hX`hs-*qM o;W`4S^ $ e\h}A6 public class SiteInfoBean { 'eo
KZX+ i<H wTmm$ B=>RH!& private String sSiteURL; //Site's URL Q:|l`*.R private String sFilePath; //Saved File's Path K=C!b? private String sFileName; //Saved File's Name o Y1';&BO9 private int nSplitter; //Count of Splited Downloading File rj6tZJZ#o0 Ma'_e=+A =Zu^8 0/ public SiteInfoBean() /n5F(5< {//nSplitter的缺省值为5 %q!8={J8 //default value of nSplitter is 5 T[,/5J this("","","",5); U~}
U\_ } HDda@Jy {fha`i pl5P2&k public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 5DXR8mLoaJ { by'DQ 00 sSiteURL= sURL; ^qg?6S4 sFilePath = sPath; L7= Q<D< sFileName = sName; "6R
5+ this.nSplitter = nSpiltter; z
>YFyu#LF 'mH )d VA"*6F } Xg=x7\V GK9/D|h4 %]gn?`O public String getSSiteURL() :N<.?%Kf { s:2|c]wQ#R return sSiteURL; ~6pr0uyO` } yC3yij<oR 2:BF[c` 9Ro6fjjE public void setSSiteURL(String value) -29gL_dk. { 2u"7T_"2D sSiteURL = value; =/u%c! } pG34Qw V7Z4T6j4 rQOWLg!" public String getSFilePath() t~e<z81p { ~_9n .C return sFilePath; b{d4xU8' } ) c/%
NiN < -uc."6\ 'Q
=7/dY3I public void setSFilePath(String value) 2+cNo9f { 9%iUG(DC sFilePath = value; `C_jP|[e } BnCKSg7V ed!:/+3e/ zF@o2<cD@ public String getSFileName() &O)&k { ?9HhG?_x return sFileName; RP2_l$ } WpS1a440 ^A][)*SZ YXU|h public void setSFileName(String value) $B#6tk~u { Bd^"=+c4 sFileName = value; 'S<%Xm } W(25TbQ [L6w1b, ^9_UUzf\ public int getNSplitter() c(U { [w0/\]o return nSplitter; Z2Zq'3* } y8s!M [3W*9j ;uqx@sx ; public void setNSplitter(int nCount) `:wvh( { f`8OM}un& nSplitter = nCount; ESg+n(R } YC=S5; } T#
lP!c WKpA| !mRx$
%ul /* hH->%* **Utility.java >tG+?Y'{ */ ?
b[n|^wS package NetFox; 7l."b$U4yv !ph" mf$-
li]
6Pj, public class Utility { =39 ?:VoD EQIUSh)M `p0ypi3hn public Utility() A])P1c. 7" { KECElK3uj yMc:n"-[ Jz:r7w{4eB } Bi~:>X\[^6 spQLG_o,J //线程睡眠 1|ZhPsD.}g public static void sleep(int nSecond) ++}\v9Er { GIftrYr try{ *U=]@I}J Thread.sleep(nSecond); {ub/3Uh } o5Y2vmz?9 catch(Exception e)
sM\lO { 85|fyX e.printStackTrace (); tfkr+
/ } >p])it[q&$ } B|%tE{F 02JoA+ //日志 zTo8OPr public static void log(String sMsg) ~u&|G$1!0 { W~ULc9 System.err.println(sMsg); 6QZ5|T ] } q
(+ZwaV@ C+F*690h 4ZC!SgJo public static void log(int sMsg) 64j|}wJ$ { ~%#mK:+ System.err.println(sMsg); `C_'|d<HA } b-@\R\T } 7S$&S; PT9v*3Bq~ R4e&^tI@* /* 8[bkHfI **TestMethod.java DF1<JdO+ */ LS.r%:$mb package NetFox; K(T\9J. 'GJVWpvUU M R'o{?{e` public class TestMethod { n&-496H VY+>=! DB`QsiC) public TestMethod() 5IqQ |/m<6 { ///xx/weblogic60b2_win.exe fT
Y/4( try{ !q4x~G0d SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); W9J1= //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); :Dl%_l SiteFileFetch fileFetch = new SiteFileFetch(bean); W W "i fileFetch.start(); r;iV$Rq! } *(GZ^QH. catch(Exception e){e.printStackTrace ();} 8v
yG*UK {UH9i'y:t :DkAQ-<~ } ~fzuwz dl l%4Sd O.k\]' public static void main(String[] args) zuL7%qyv { 0y%L-:/c| new TestMethod(); *]s&8/Gmb } ';RI7)< } x:5dCI
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