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/* bU7n1pzW,o **SiteFileFetch.java "sdzm%
*/ 2h%/exeS; package NetFox; %`?IY < import java.io.*; krFuEaO
import java.net.*; 6* (6>F5 /0A9d-Qd< ]MKW5Kq public class SiteFileFetch extends Thread { XShi[7 AAb3Jf`UW fp^{612O? SiteInfoBean siteInfoBean = null; //文件信息Bean
&gR)Y3 long[] nStartPos; //开始位置 eVGO6 2|! long[] nEndPos; //结束位置 B<%cqz@ FileSplitterFetch[] fileSplitterFetch; //子线程对象 0Q`Dp;a5& long nFileLength; //文件长度 UP' ~D]J boolean bFirst = true; //是否第一次取文件 .nl!KzO6g boolean bStop = false; //停止标志 V:s$V.{! File tmpFile; //文件下载的临时信息
ltK\)L DataOutputStream output; //输出到文件的输出流 0}$Zr*|;Y B<zoa= //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) >g+yw1nC public SiteFileFetch(SiteInfoBean bean) throws IOException ~4fUaMT { P{-j^'y siteInfoBean = bean; 4YX/= //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); /H3z~PBa tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 1DLAfsLlj if(tmpFile.exists ()) iHBetkAu { *t=8^q(K[ bFirst = false; mE\sD<b read_nPos(); D<U^FT } )31{.c/ else /N '0@q { iI.pxo
s nStartPos = new long[bean.getNSplitter()]; |Tv}leJF nEndPos = new long[bean.getNSplitter()]; Xt}
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amvD5 public void run() oN({X/P2j { sE:~+C6o: //获得文件长度 QP>tu1B| //分割文件 *hWpJEV //实例FileSplitterFetch 6Ft?9
B(F: //启动FileSplitterFetch线程 0gTv:1F/ //等待子线程返回 Rxb?SBa try{ 3u[m? Vw if(bFirst) lDsT?yHS`Z { nQ*9E|Vx nFileLength = getFileSize(); X\4d|VJ?m if(nFileLength == -1) ddK\q!0 { iq1HA.X( System.err.println("File Length is not known!"); .bYZkO:oy } &X3G;x2; else if(nFileLength == -2) 2i0 .x { <fSWX>pR System.err.println("File is not access!"); aW=c.Q. } @I"&k!e<2 else 00SYNG! { R5Pk>-KF for(int i=0;i<nStartPos.length;i++) WoV"&9y { Z=ZTSl nStartPos = (long)(i*(nFileLength/nStartPos.length)); pmwVVUEQ } =-bGH
for(int i=0;i<nEndPos.length-1;i++) 5}C.^ J` { qTZ\;[CrP" nEndPos = nStartPos[i+1]; :Oiz|b( } ml,FBBGq|- nEndPos[nEndPos.length-1] = nFileLength; eR3v=Q } kI?+\k\V` } u*}ltR~/ YuXCRw9p; <?Ln`,Duk //启动子线程 pl}nbY fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; C]EkVcKFA for(int i=0;i<nStartPos.length;i++) *c<6 Er>s { OI^??joQ fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ^ YOCHXg siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), W{RZ@3ZY nStartPos,nEndPos,i); HOaNhJ{7D Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); JtvZ~s fileSplitterFetch.start(); #7Fdmnu` } ^%n]_[RUn4 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), vmzc0J+3p siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Yj CH KI"e // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", q@Aw]Kh nEndPos = " + nFileLength); @>fsg-| // fileSplitterFetch[nPos.length-1].start(); *"nN To hv0bs8h oyT`AYa //等待子线程结束 dy>5LzqK3 //int count = 0; K/iFB //是否结束while循环 :
E`78 boolean breakWhile = false; n1U! od \wV^uS X L3m#zW& while(!bStop) <Hf3AB;#4 { G{.[o6> write_nPos(); c>Tf@Aog> Utility.sleep(500); UY6aD~tD0 breakWhile = true; 2U|"]tpM& )2lB i/.#` for(int i=0;i<nStartPos.length;i++) =,b6yV+$D { .C\2f+(U if(!fileSplitterFetch.bDownOver) 1=Kt.tuf { ^Ig QIN breakWhile = false; "T$LJ1E break; dl.gCiI } Cag^$nj } w}]BJ<C if(breakWhile) S zNZY&8
f break; Bs`mzA54 ?edf$-"z/ {'Y()p3kl //count++; ;`O9YbP# //if(count>4) \G#_z|'dN // siteStop(); 5X>K#N } c/7}5#Rs h`dHk]O ^g|j4N System.err.println("文件下载结束!"); [_eT{v2B4 } ppo.# p0w catch(Exception e){e.printStackTrace ();} %+htA0aX } -{}(U ]=o1to- L+mE& //获得文件长度 Lv?jg?$ public long getFileSize() YqmsL< { We++DWp int nFileLength = -1; xw}rFY$ try{ blLl1Ak URL url = new URL(siteInfoBean.getSSiteURL()); +DG-MM%\ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); `_f&T}] httpConnection.setRequestProperty("User-Agent","NetFox"); &q&~&j'[ MDQ:6Ri #zv&h`gY int responseCode=httpConnection.getResponseCode(); h3bQ<?m if(responseCode>=400) 7H*,HZc@= { Q;N)$Xx processErrorCode(responseCode); /6rQ.+|). return -2; //-2 represent access is error h<V,0sZ&: } o|u4C {j 'qUM38 s 9M^5<8: String sHeader; @~Ys*]4UE LF`]=.Q JMk2OK{0 for(int i=1;;i++) 8[.&ca/[ { QLU <%w:B //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 2ql)]Skg6 //Utility.log(in.readLine()); cuC'
o\f sHeader=httpConnection.getHeaderFieldKey(i); );T&pm:C> if(sHeader!=null) TMD\=8Na { <"K2t
Tg. if(sHeader.equals("Content-Length")) n=)LB&
m { S|xwYaoy% nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); pP#D*hiP-g break; /Xj{]i3{ } e_-7,5Co } dWi<U4 else *o5[P\'6 break; 7O8 @T-f+2 } $}IG+,L } $vK,Gugcx catch(IOException e){e.printStackTrace ();}
_ X catch(Exception e){e.printStackTrace ();} .Tm.M7 \03<dUA6 }Ml BmD Utility.log(nFileLength); \[qxOZ{ %y\5L#T!> uF|Up]Z G return nFileLength; AFM+`{Cq } "uP*pR^ }z#M!~ C:t?HLY)fG //保存下载信息(文件指针位置) *|j4>W\J private void write_nPos() w#hg_RK(Jr { k]C k%[d try{ KgbBa2@+ output = new DataOutputStream(new FileOutputStream(tmpFile)); RT3(utwO output.writeInt(nStartPos.length); R:(i}g<3 for(int i=0;i<nStartPos.length;i++) .N>*+U>>P { P3YM4&6XA // output.writeLong(nPos); S>b
3_D output.writeLong(fileSplitterFetch.nStartPos); |QF_E4ISD output.writeLong(fileSplitterFetch.nEndPos); q"@#FS } }A]eC
output.close(); R!%HQA1U } j/Y]3RSMp catch(IOException e){e.printStackTrace ();} WVsj catch(Exception e){e.printStackTrace ();} =L@CZ" } AbhR* {qlcTc IA&V?{OE@I //读取保存的下载信息(文件指针位置) b%*`}B private void read_nPos() /P-#y@I { 9D &vxKE try{ T{^ P DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); r73W.& int nCount = input.readInt(); l*]hUP J nStartPos = new long[nCount]; .gGO+8[N* nEndPos = new long[nCount]; 7QnWw0 for(int i=0;i<nStartPos.length;i++) mA$86 X_ { 1=5HQ~|[TO nStartPos = input.readLong(); [mQ1r*[j nEndPos = input.readLong(); si)>:e } Nd"IW${Kg input.close(); m&b1H9ymd } h_ccE6]t catch(IOException e){e.printStackTrace ();} "f<gZsb catch(Exception e){e.printStackTrace ();} R2?s
NlF } )ii aT~
] 5M~+F"Hl ,?Ie!r$6 private void processErrorCode(int nErrorCode) Z*f%R\u { bcvm]aPu System.err.println("Error Code : " + nErrorCode); Itv cN } _68vSYr XkkzY5rxOc !;mn]wR>a //停止文件下载 iLJ@oM;2 public void siteStop() yGNpx3H
{ ^n<YO=|u bStop = true; U^|T{g+O for(int i=0;i<nStartPos.length;i++) U}DE9e{/! fileSplitterFetch.splitterStop(); %FM26^ fMUh\u3 #"~\/sb
} @k)J
i!7 } YmFg#eS //负责部分文件的抓取 t:V._@ **FileSplitterFetch.java 0G-obHe0 */ 9G2rVk package NetFox; [zm@hxym kaQNcMcq uF|_6~g import java.io.*; i/n
ee_ import java.net.*; DBsoa0w ZO/Jf Jn~ _q1\8y public class FileSplitterFetch extends Thread { Ipq0
1
+ )`{m |\b X<. l(9$ String sURL; //File URL $0K@=7ms long nStartPos; //File Snippet Start Position %XeN_
V long nEndPos; //File Snippet End Position <uS/8MP{ int nThreadID; //Thread's ID 3Mm_xYDud boolean bDownOver = false; //Downing is over P(Rl/eyRM boolean bStop = false; //Stop identical W|Sab$h FileAccessI fileAccessI = null; //File Access interface Iox )- b/qK/O8J vdvnwzp!l public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException s@iY'11 { l1lYb;C this.sURL = sURL; Z2yO /$< this.nStartPos = nStart; Cw(yp u this.nEndPos = nEnd; D@9 +yu=S nThreadID = id; QD{1?aY fileAccessI = new FileAccessI(sName,nStartPos);//定位 4U}J?EB?K } (0#$%US\ F(."nUrf I<sUB4T>#W public void run() lb}RPvQE { fap]`P~#L while(nStartPos < nEndPos && !bStop) IAGY-+8e { mF~]P8 <z2.A/L 2[3t7 C try{ QtG6v<A URL url = new URL(sURL); ps:`rVQ7 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 13Z,;YW httpConnection.setRequestProperty("User-Agent","NetFox"); _*?qOmf= String sProperty = "bytes="+nStartPos+"-"; O9d"Z$~n=j httpConnection.setRequestProperty("RANGE",sProperty); <`=Kt[_BQ Utility.log(sProperty); P2f^]z UCmy$aW -Z:x!M[Xr InputStream input = httpConnection.getInputStream(); vX6JjE! //logResponseHead(httpConnection); &PL=nI\) LFxk.-{= +%,oq]<[, byte[] b = new byte[1024]; LI3L~6A> int nRead; F.aG7 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) N0^SWA|S { jlF3LK)9q nStartPos += fileAccessI.write(b,0,nRead); +aEm]=3 //if(nThreadID == 1) $
-<(geI // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 9M7P|Q } #yR&|*@ MG.c`t/w l#T%N@X Utility.log("Thread " + nThreadID + " is over!"); ~' 955fK> bDownOver = true; _+aR|AEC //nPos = fileAccessI.write (b,0,nRead); '{.4~: } X>uLGr> catch(Exception e){e.printStackTrace ();} sCY } 7bO>[RQB } gI2'[OU yv]|Ce@8A cMT:Ij]; //打印回应的头信息 MK/8<i<. public void logResponseHead(HttpURLConnection con) tF-l=ph}` { A'~mJO/ for(int i=1;;i++) 8]vut{ { !LpjTMYs String header=con.getHeaderFieldKey(i); F."ZCEb if(header!=null) e4Qjx*[G //responseHeaders.put(header,httpConnection.getHeaderField(header)); PPySOkmS3 Utility.log(header+" : "+con.getHeaderField(header)); T6\]*mlr else _6c/,a8;*J break; B@ufrQ#Y. } z a_0-G%C2 } Tq)hAZ \}.bTca W$,/hB& z public void splitterStop() `W+-0F@Y?@ { bfncO[Q,? bStop = true; `S-l.zSZ4B } hg0{x/Dgny d`flYNg4 TW(X#T@Z6I } { ?jXPf ]R}(CaT1 4[kyzz x /* N;-%:nC **FileAccess.java BxV>s+o&] *//文件访问(定位,写) u
ynudO package NetFox; n CX{tqy import java.io.*; eXnSH$uI wN%lc3[/z2 (G./P@/[ public class FileAccessI implements Serializable{ 6S{F4v2/0 Uvc$&j^k //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 t}Td$K7 RandomAccessFile oSavedFile; z?Z"*z long nPos; d(^HO~p 6A.%)whI; %vZHHBylu public FileAccessI() throws IOException
Pvt!G { &v;fK$=2C this("",0); .s4v*bng } V0
Z8VqV pT~3<
, :8/ 6dx@Y( public FileAccessI(String sName,long nPos) throws IOException #*y.C[^5{ { 7 qn=W oSavedFile = new RandomAccessFile(sName,"rw"); e>c
-b^{& this.nPos = nPos; }{@y]DcdM4 oSavedFile.seek(nPos); ^;s/4 } 3`{
vx rloxM~7!,) j<BRaT public synchronized int write(byte[] b,int nStart,int nLen) jz=V*p}6 { y*sVimx int n = -1; pnp8`\cIH try{ p&<n_b oSavedFile.write(b,nStart,nLen); CC3i@ n = nLen; D8~\*0-> } )h0>e9z>Y catch(IOException e) z<fd!g+^ { [$d]U. e.printStackTrace (); d&|5Rk
~ } 4 Cd5-I 9__Q-J p8-$MF]]6 return n; K$}K2w } $?z}yx$ +'93%/: YG=:lf } ZWS:-]P. -
uO(qUa# *6AqRE /* L.. **SiteInfoBean.java ~J~R.r/ */ ?F$ #t6Q package NetFox; G;wh).jG5 NCzabl @@\px66 public class SiteInfoBean { MxX)&327 kiyKL:6D| #Q["[}flVv private String sSiteURL; //Site's URL "O$WfpKX private String sFilePath; //Saved File's Path OIw[sum2 private String sFileName; //Saved File's Name bw/mF5AsW private int nSplitter; //Count of Splited Downloading File qHyOaKMd Z{l`X#': `#!>}/m public SiteInfoBean() 4:O.x#p {//nSplitter的缺省值为5 1GkoE //default value of nSplitter is 5 ft@#[Bkx this("","","",5); GoX<d{ } .+?]"1>] _ Dz*% Ho(}_Q& public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) I
H#CaD { *>[q*SF sSiteURL= sURL; p-(V2SP/)t sFilePath = sPath; %q eNC\6N sFileName = sName; o2$A2L9P this.nSplitter = nSpiltter; OKau3T] Y^d#8^cP +.^pAz U}R } 4)}>dxv l]t^MEoc8 l'2vo=IQ public String getSSiteURL() FGc#_4SiL { `S?_=JIX return sSiteURL; !h}Vz } L">jSZW[[ jJvd!,=) D_ej%QtB@ public void setSSiteURL(String value) )`Qr=DIsW { uhaHY`w sSiteURL = value; Ywt9^M|z; } n|Y}M]u, G#NbLj`h v5?)J91 public String getSFilePath() KkzG#'I1 {
zZ51jA9x return sFilePath; qJl DQc- } J%q)6& "9Q_lVI|Q E;4d lL`* public void setSFilePath(String value) ${ DSH { k'e1ZAn sFilePath = value; #^|2PFh5 } 8~.8"gQ |7Z}#eP// kDQE*o public String getSFileName() l$HBYA\Qh { /']`}*d return sFileName; ;F%EW`7 } B 2_fCSlg oL>o*/ d%q&[<'jf public void setSFileName(String value) n^qwE { Q=[ IO,f sFileName = value; HKOSS-`5 } 2t?>0)*m wXdt\@Qr D]'8BS3 public int getNSplitter() vt(}8C+ { XS&;8 PO return nSplitter; B
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/=#~8 &FZ~n?;hQ public void setNSplitter(int nCount) ) R5[aO { &K=)YpT nSplitter = nCount; ,PKUgL}w } v-!Spf } <+%y 1`Bhis9X8 }+u<w{-7/ /* ,ag*
/ **Utility.java <5FGL96 */ CL(D&8v8~ package NetFox; ||7x51-yj ,%V%g!6{ Y|/,*,u+ public class Utility { r`+G9sj3U =&.9z 4A Pu BE=9, public Utility() :Us+u-~ { SD:Bw0gzrI .K#'
Fec
2Mw` } Ib/e\+H\ z<yqQ[ //线程睡眠 7o*~zDh@fH public static void sleep(int nSecond) /6 x[C { PCc{0Rp\vk try{ D7B g!* Thread.sleep(nSecond); iM8l,Os]<f } }^n"t>Z8 catch(Exception e) fP( n 3Q { =gd~rk9 e.printStackTrace (); k%N$eO$ } Vm I
Afe } ?4W6TSW-' \vL{f;2J //日志 !L)|N< public static void log(String sMsg) _4k zlD { vr
kj4Jf System.err.println(sMsg); i~4$V } (ze9-!% d:z7
U 6s!=de public static void log(int sMsg) +J42pSxzoo { Ycxv=Et System.err.println(sMsg); <fgf L9- } J/Ch
/Sa } | NFDrm >pq=5Ha& HMKogGTTo /* x IL]Y7HWM **TestMethod.java Qk.[# */ 9!Fg1h= package NetFox; I "R<XX d=g,s[FMm !(j<Y0xo: public class TestMethod { iE
,"YCK 2ryg3%+O 9wC=' public TestMethod() u*7>0o|H: { ///xx/weblogic60b2_win.exe i>pUTT
_[ try{ mJVru0 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); "1Y DT-I" //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); og*ti!Z SiteFileFetch fileFetch = new SiteFileFetch(bean); >T\^dHtz fileFetch.start(); _2}/rwVg } _znn `_N:v catch(Exception e){e.printStackTrace ();} i$!K{H1{9 U[ogtfv`m qvJQbo[.9P } Y)AHM0;g gm: xtN "Z-YZ>2 public static void main(String[] args) axkNy}ct { NV2$ >D new TestMethod(); ;s$
P?(' }
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