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/* X)3(.L **SiteFileFetch.java S`kOtZ_N n */ Pxr/*X package NetFox; #^T`vTD- import java.io.*; z=>fBb>w7 import java.net.*; d,^O[9UWo !UoA6C: nm5DNpHk public class SiteFileFetch extends Thread { &>\;4E.O5 *V2;ds.~ p~w] ~\ SiteInfoBean siteInfoBean = null; //文件信息Bean ?06gu1z/ long[] nStartPos; //开始位置 roQI;gq^ long[] nEndPos; //结束位置 kSz+UMC-7: FileSplitterFetch[] fileSplitterFetch; //子线程对象 Tw-NIT) long nFileLength; //文件长度 WGv 47i boolean bFirst = true; //是否第一次取文件 |]< 3cW+ boolean bStop = false; //停止标志 gy.UTAs
N File tmpFile; //文件下载的临时信息 LSC[S: DataOutputStream output; //输出到文件的输出流 Gn2{C% <wSJK //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) @vl$[Z| public SiteFileFetch(SiteInfoBean bean) throws IOException !8G)`' { NVMn7H}>
siteInfoBean = bean; B'yjMY![
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); M@.l#
[@U tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Q5ASN"_ if(tmpFile.exists ()) H^-Y]{7 { :+"4_f0 bFirst = false; ;oOTL'Vu read_nPos(); 4t[7lL`Z } l2LQV]l else E+ /Nicn= { FOG{dio nStartPos = new long[bean.getNSplitter()]; x$d[Ovw- nEndPos = new long[bean.getNSplitter()]; \foThLx } bN_e~ z hL3up] pZ __g?xw $]DuO1H./ } 6\7c: t<v.rb :`N&BV public void run() 5=?P6I_$G { hQ|mow@Zmz //获得文件长度 m \)B=H!bz //分割文件 xrg"/?84 //实例FileSplitterFetch eke[{%L //启动FileSplitterFetch线程 Cu+p!hV //等待子线程返回 {]dxFhe) try{ 3=
=["hO if(bFirst) ,!{8@*!=s { d~<$J9% nFileLength = getFileSize(); ;KQU%
k$ if(nFileLength == -1) S(PV*e8 { J@-'IJ System.err.println("File Length is not known!"); ??/bI~Sd } zx$YNjeV else if(nFileLength == -2) Jq0sZ0j { M+&~sX*a System.err.println("File is not access!"); 3
`_/h' ~ } Xe);LhDC else 1J!v;Y\\ { LLgw1 @-D for(int i=0;i<nStartPos.length;i++) B!+c74 { 9Kd=GL_ nStartPos = (long)(i*(nFileLength/nStartPos.length)); y[i}iT/~ } c[-N A for(int i=0;i<nEndPos.length-1;i++) 7rdmj[vu {
AOg'4 nEndPos = nStartPos[i+1]; &| (K#|^@ } p6j-8ggL nEndPos[nEndPos.length-1] = nFileLength; ;T^s&/>E } #mU\8M, } AW r2Bv |5vJ:'` I w%\
n XJ //启动子线程 _#K|g#p5 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; .!4'Y} for(int i=0;i<nStartPos.length;i++) 25OQY.>bE { KiXfR\S~C fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 4 ?BQ&d siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), h{)m}"n<R nStartPos,nEndPos,i); e`0C0GaP Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); F$8:9eL,T fileSplitterFetch.start(); ~u*4k:2H } [k
7HLn) // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Y^]n>X siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); o`CM15d*7o // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", RFbf2s\t nEndPos = " + nFileLength); RJ?)O#} // fileSplitterFetch[nPos.length-1].start(); ~m fG
Yk" Q9cSrU[$ qXtC7uNj$ //等待子线程结束 cpk\;1&t //int count = 0; !mK()# 6 //是否结束while循环 Sd6O?&( boolean breakWhile = false; W<q<}RSn %i? Py*WHHO while(!bStop) bg|$1ue { j*QdD\) write_nPos(); S5JMt;O Utility.sleep(500); )L&y@dy) breakWhile = true; H{=]94 q&:7R
.Ci 4Y?fbb< for(int i=0;i<nStartPos.length;i++) &~eCDlX/ { 7NJl+*u if(!fileSplitterFetch.bDownOver) d>Tv?'o`q { <7y/)b@ breakWhile = false; IS8 sJ6") break; V~PGmn[V } :NLY;B` } ?*V\
-7jg if(breakWhile) ?u2\*@C break; e^*&& S<(i /5Z+ d\qszYP[ //count++; pq0Z<b;2 //if(count>4) .+>fD0fW7Y // siteStop(); fmYx } /'8%=$2Kw /[ m7~B]QE iJOoO"Ai System.err.println("文件下载结束!"); xlZh(pf } yPmo1|'X>d catch(Exception e){e.printStackTrace ();} 3F,M{'q } Ju>QQOxi| dkg`T#} 1a9' *[ //获得文件长度 [`tOhL public long getFileSize() X(Af`KOg[ { Vw;iE=L int nFileLength = -1; G739Ne[gL try{ G9xl-ag+z URL url = new URL(siteInfoBean.getSSiteURL()); iAe"oXK| HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); #TUm&2 +V httpConnection.setRequestProperty("User-Agent","NetFox"); #reR<qp&] n$ByTmKxv k|x mZA* int responseCode=httpConnection.getResponseCode(); Dz hLb8k if(responseCode>=400) !l dE9 . { '[6]W)f processErrorCode(responseCode); :&5u) return -2; //-2 represent access is error Rm3W&hQ } zecM|S _ 7r,GdP . !_Y%+Rkp0 String sHeader; &=t~_ Dc ],AtR1k At>e4t2@ for(int i=1;;i++) )[Rwc#PA; { G l/3*J //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); qh bagw~ //Utility.log(in.readLine()); .\H-?6R^ sHeader=httpConnection.getHeaderFieldKey(i); 5[\g87\ if(sHeader!=null) bLl
?!G. { PUea`rE?R if(sHeader.equals("Content-Length")) ]l }v { "LYhYkI nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 8;~,jZ
s break; @/aJi6d"^E } MuO(%.H } j^/<:e c. else N]8/l:@ break; Lm$KR!z } 1grcCL
q } Y".?j5f? catch(IOException e){e.printStackTrace ();} F+c8
O catch(Exception e){e.printStackTrace ();} ?b d&Av /slCK4vFc H^*[TX=#[ Utility.log(nFileLength); CWZv/>,% tZ) ,Z< Fu?_<G%Ynp return nFileLength; eOVln1a } c 9gm% s'/_0 ;U0w<>4L //保存下载信息(文件指针位置) J}Z\I Y, private void write_nPos() 0XE6Hw { JWu0VLo try{ Y)8 Py1} output = new DataOutputStream(new FileOutputStream(tmpFile)); XR=ebl output.writeInt(nStartPos.length); %N\45nYU: for(int i=0;i<nStartPos.length;i++) !*^+7M { ;|= 5)KE // output.writeLong(nPos); O&CY9
2)Lk output.writeLong(fileSplitterFetch.nStartPos); "kt7m output.writeLong(fileSplitterFetch.nEndPos); =H-BsX?P } Yk{4 3yw output.close(); mr>E'd.' } r"L:Mu catch(IOException e){e.printStackTrace ();} 1"A"AMZf catch(Exception e){e.printStackTrace ();} H(?+-72KX } (eT9N_W 5!i\S[: &6GW9pl[ //读取保存的下载信息(文件指针位置) 4D.h~X4 private void read_nPos() U2Siw { ZdhA:}~^E try{ )fuAdG DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 4,`t9f^: int nCount = input.readInt(); ZDK+>^A) nStartPos = new long[nCount]; FKtCUq,: nEndPos = new long[nCount]; q.hpnE~#lh for(int i=0;i<nStartPos.length;i++) W)2k>cS { {Y+e|B0 nStartPos = input.readLong(); 4\U"e* nEndPos = input.readLong(); }P!:0w3 } ?S)Pv53>} input.close(); $*fEgU% c } TD ;u" catch(IOException e){e.printStackTrace ();} o|KmKC n> catch(Exception e){e.printStackTrace ();} Fyz1LOH[X } UZJs!#P m2% Q9X+H4`}y private void processErrorCode(int nErrorCode) it j&L <e { 0 4ceDe System.err.println("Error Code : " + nErrorCode); !9S!zRy@ } R-Tf9?) TY+Rol;! F{&0(6^p! //停止文件下载 x;&iLQZh public void siteStop() 2Zq_zvKUt { ;k1VY
Ie} bStop = true; #3C]" for(int i=0;i<nStartPos.length;i++) /GP:W6:6z6 fileSplitterFetch.splitterStop(); LqQ&4I V'N]u(^ {f6~Vwf } gE&83i" } 1A7(s0J8 : //负责部分文件的抓取 1VXn`O?LW **FileSplitterFetch.java ]|Iczg- */ #9(iu S+BU package NetFox; Y0Rk:Njc St3/mDtH e&pt[W}X%u import java.io.*; H"JzTo8u import java.net.*; ,7Q b24A {tXyz[;i1} Wh?3vZ^ public class FileSplitterFetch extends Thread { X5)].[d yEL5U{ 2reQd47 String sURL; //File URL t] G hONN long nStartPos; //File Snippet Start Position v00w
GOpW long nEndPos; //File Snippet End Position J.,7d , int nThreadID; //Thread's ID >{h/4T@ boolean bDownOver = false; //Downing is over /a-OBU boolean bStop = false; //Stop identical 3jM+j_nR FileAccessI fileAccessI = null; //File Access interface $Ehe8,=fj ]EvK.ORy F$,i_7Z&6 public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Dv BRK}' { dJ,,yA* this.sURL = sURL; =eeZtj. this.nStartPos = nStart; 4^w`]m this.nEndPos = nEnd; /kFw(l_. nThreadID = id; T;Ra/H fileAccessI = new FileAccessI(sName,nStartPos);//定位 O1z3( } $gcC}tX ESY\!X:| *edhJUT public void run() uWr vkLGN { g/z7_Aq/ while(nStartPos < nEndPos && !bStop) C1(0jUz { J+nUxF;EE V%w]HIhq $@ZrGT try{ 3B ;aoejHm URL url = new URL(sURL); '_M"yg6d HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); :&=`xAX- httpConnection.setRequestProperty("User-Agent","NetFox"); k
3oR: String sProperty = "bytes="+nStartPos+"-"; \yo)oIi[p httpConnection.setRequestProperty("RANGE",sProperty); 7,D6RP(b Utility.log(sProperty); &n2dL->*# R` >z>!) -W"w InputStream input = httpConnection.getInputStream(); 5PT*b}g@ //logResponseHead(httpConnection); 5l
/EZ\q w;DRC5V> ~&8bVA= . byte[] b = new byte[1024]; sG k'G573 int nRead; kKNrCv@64d while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 6tT*b@/_o { y[~w2a&+ nStartPos += fileAccessI.write(b,0,nRead); l%xjCuuhU //if(nThreadID == 1) ]n&Eb88 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); d7!, } :J;*]o: {$qLMx'; GPU,.s"&( Utility.log("Thread " + nThreadID + " is over!"); R(cM4T.a bDownOver = true; CoQ<Ky}* //nPos = fileAccessI.write (b,0,nRead); .hytn`+9 } F*/J`l catch(Exception e){e.printStackTrace ();} =bl6: } #BwkbOgr } eQ eucmQd{ 4X:S#z
J4^aD;j //打印回应的头信息 ]w9\q*S] public void logResponseHead(HttpURLConnection con) De:| T8& { HF]|>1WV[ for(int i=1;;i++) q5ja \ { LRmH@-qP String header=con.getHeaderFieldKey(i); 20k@!BNq if(header!=null) S,2{^X //responseHeaders.put(header,httpConnection.getHeaderField(header)); A\};^Y Utility.log(header+" : "+con.getHeaderField(header)); &0%x6vea else LIMPW w g break; GUdVsZjz( } vvcA-k? } zQyt 1&! T!Eyq,] Pa\"l'!>^ public void splitterStop() .7M:AS> { u(g0Ob bStop = true; t73" d#+ } M"<B@p]rk: u8i!Fxu QwgP+ M+ } "1%YtV5R{ EnnE@BJ" u40<>A /* YO`V'6\ **FileAccess.java ?'r=>'6D *//文件访问(定位,写) |$a!Zx94^ package NetFox; HmZ* import java.io.*; d{G*1l(X We*&\e+"T =^S1+B
MY- public class FileAccessI implements Serializable{ "3X~BdH&J KO5! (vi@ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 3zuYN-; RandomAccessFile oSavedFile; jK9#.
0 long nPos; a!Ht81gj 7,&M6<~ { x/~gp public FileAccessI() throws IOException ;7w4BJcq'] { rq_0"A this("",0); [,As;a*o } LP-_i}Kq i*ErxWzu 68-2EWq public FileAccessI(String sName,long nPos) throws IOException l#k&&rI5x. { 4<Q^/-W oSavedFile = new RandomAccessFile(sName,"rw"); Rx%SeM2 this.nPos = nPos; T?V!%AqY: oSavedFile.seek(nPos); v[I,N$: } $`Hb- Fl0 :Z :o+&>z public synchronized int write(byte[] b,int nStart,int nLen) 19.oW49Sw { ;ro%Wjg`} int n = -1; ?kKr/f4N try{ v3/l=e?u oSavedFile.write(b,nStart,nLen); iW,fKXuo&y n = nLen; uKE?VNC] } , UiA?7k catch(IOException e) #Z>EX?VS: { u[G`_Y{=EM e.printStackTrace (); WXX)_L$2 } /7[X_)OG KR sY `[Y qxW^\u!< return n; "0]s|ys6< } \:@yfI@ 8Jb N&C WG=~GDS> } Vp
j[)W%L <Gkmk?x`A z)&ZoSXWc /* ^7>k:|7-t **SiteInfoBean.java IMtfi(Y%F */ "D1u2>( package NetFox; i]M:ntB" *
j]"I=D 2GC{+* public class SiteInfoBean { 9qXKHro }Z Nyd ]p5]n*0X private String sSiteURL; //Site's URL h1+lVAQbT private String sFilePath; //Saved File's Path E[kf%\
private String sFileName; //Saved File's Name (Y>|P private int nSplitter; //Count of Splited Downloading File pRrokYM
d wseb]=U k1HVvMD< public SiteInfoBean() dD.;P=AP {//nSplitter的缺省值为5 "Q< //default value of nSplitter is 5 E\lel4ai this("","","",5); t],5{UF } jNu`umS Lx#CFrLQ* .R5(k'g? public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) LOX} { KKJ)BG?qZ sSiteURL= sURL; CE;J`; sFilePath = sPath; CP"
sFileName = sName; 5KI lU78 this.nSplitter = nSpiltter; t`oH7)nut q@0g KC&U *j"u~ NF } FQW{c3%qZ *p Q'w Vnvfu!>( public String getSSiteURL() vE<z0l { GZCX m+ return sSiteURL;
0V[`zOO(o } #$;i 4a uXkc07 r' F\IJim-Rh public void setSSiteURL(String value) hF;TX.Y6 { 49d02AU% sSiteURL = value; QK0-jYG^ } Oi-=
Fp A4 cypb6Q_ public String getSFilePath() S2,tv { [oS4WP return sFilePath; vn5O8sD } odaCKhdk _KZ&/ wJ Qm7n-+ public void setSFilePath(String value) h5^qo ^;g7 { $3c9iVK~_ sFilePath = value; o7=#ye&P } aTU[H~dTU N6UPD11}6 ` 5lW public String getSFileName() @:%p#$V { cf`g.9pjlx return sFileName; _ISaO
C{2- } B57MzIZi] #WqpU. 5R}K8"d public void setSFileName(String value) 'Tbdo >y { T;`2t; sFileName = value; 9^<Y~rkm
} u|{(m_"H CEHtr90P B+r$_L&I public int getNSplitter() 0Q4i<4 XW { qayM0i>> return nSplitter; "%E<%g } s9aa _Th u/ZV35z M,we9];N public void setNSplitter(int nCount) Q@0Zh,l { 3]wV 1<K nSplitter = nCount; lv!8)GX| } V7(-<})8 } wS+ekt5 pgipT#_K (\$=de>? /* b9RJ>K **Utility.java +Z=%4 */ KJP}0|[ package NetFox; qLWM,[Og 6QM$aLLP? dng^#|X)? public class Utility { >i!y[F wmB_)`QNP Bk2j|7
public Utility() cyTBp58
{ cJLAP%.L s8V:;$ ! /mG-g%gE } u?7^+z Y?#aUQc //线程睡眠 F!7\Za, public static void sleep(int nSecond) ?A]/
M~3B { tV"Jh>Z try{ K3xt,g
Thread.sleep(nSecond); w:nLm, } {!>'#
F^e catch(Exception e) :`B70D8ku { Dn[u zY6 e.printStackTrace (); ~i
UG2 4v } UZRN4tru6 } 3-v&ktD&N' dJ.up*aR //日志 6`WI
S4 public static void log(String sMsg) '_B;e=v` { ?*L{xNC# System.err.println(sMsg); AwtiV-w } `R
m<1 :j&- Lc e4LJ3y&z" public static void log(int sMsg) WX4f3Um { vI \8@97 System.err.println(sMsg); }uiD8b{I } 3g87i r } a[=;6! p\22_m_wd ;pt.)5 /* hV}C.- 6h **TestMethod.java C8KV<k */ {HbSty package NetFox; '37 <+N 'OI(MuSn ib%'{?Q. public class TestMethod { k2/t~|5 w0P Atu 3R<VpN){ public TestMethod() 4w#:?Y
_\[ { ///xx/weblogic60b2_win.exe =wznkqyhi try{ !CUM*<iV SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5);
xV"~?vD //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 8lFYk`|g SiteFileFetch fileFetch = new SiteFileFetch(bean); 3w}ul~>j fileFetch.start();
G *
=> } w* \JA+ catch(Exception e){e.printStackTrace ();} 2sYz$ZGC"# :u`gjj$:s ,wZq~;2 } 4ufT-&m};s KEjMxOv1 "#P#;]\ ` public static void main(String[] args) tQE<'94A { "2ZuI;w new TestMethod(); 7QdboEa } _'Rg7zHTp- } -ND1+`yD 点击下载更多相关资料
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