-
UID:2537
-
- 注册时间2006-05-09
- 最后登录2020-05-29
- 在线时间3小时
-
- 发帖8
- 搜Ta的帖子
- 精华
0
- 铜板1641
- 人品值95
- 贡献值0
- 交易币0
- 好评度8
- 信誉值0
- 金币0
-
访问TA的空间加好友用道具
- 发帖
- 8
- 铜板
- 1641
- 人品值
- 95
- 贡献值
- 0
- 交易币
- 0
- 好评度
- 8
- 信誉值
- 0
- 金币
- 0
- 所在楼道
|
/* 6ZP(E^. **SiteFileFetch.java Nn!+,;ut */ W*Zkc:{eB package NetFox; _V7s#_p import java.io.*; g/CSGIIT import java.net.*; 1_PoqD!q &,{fw@#)_ M
l Jo`d public class SiteFileFetch extends Thread { _`&m\Qe> 1v.c 6~ Rwz0poG`WG SiteInfoBean siteInfoBean = null; //文件信息Bean *U&0<{|T long[] nStartPos; //开始位置 "_-Po^u=r long[] nEndPos; //结束位置 %A1o.{H FileSplitterFetch[] fileSplitterFetch; //子线程对象 TO]@
Zu1 long nFileLength; //文件长度 ~*z% e*EL boolean bFirst = true; //是否第一次取文件 RtTJ5@V( boolean bStop = false; //停止标志 ME46V6[LX] File tmpFile; //文件下载的临时信息 =P't(< DataOutputStream output; //输出到文件的输出流 7z JRJ*NB Yc_8r+;( //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) p<2L.\6" public SiteFileFetch(SiteInfoBean bean) throws IOException 2^h27A { <m)$K siteInfoBean = bean; D$
dfNiCH //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Xg|B \\ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); J:CXW%\ <q if(tmpFile.exists ()) K1 EynU
I { I>]oS(GNT bFirst = false; lr>oYS0 read_nPos(); 5m\<U` } 8']M^|1 else e7Xeo +/ { 6#7Lm) g8 nStartPos = new long[bean.getNSplitter()]; m$}R% nEndPos = new long[bean.getNSplitter()]; KL1/^1 } \^L`7cBL 8 OY 3A ]zE;Tw.S [^Os kJ4 } x@P y>f2 $PTP/^ m0ER@BXRn public void run() {o_X`rgrL { _=_Px@<Q //获得文件长度 ,k )w6) //分割文件 1+szG1U= //实例FileSplitterFetch =RA / //启动FileSplitterFetch线程 b6nsg| //等待子线程返回 }()5"QB try{ y"bByd|6 if(bFirst) n0r+A^] { gd%NkxmW nFileLength = getFileSize(); q)X$^oE!6 if(nFileLength == -1) OK[T3/v, { ^t` k0< System.err.println("File Length is not known!"); -lbm*
-( } XG{{ 2f else if(nFileLength == -2) Tl(^ { F,W~,y System.err.println("File is not access!"); "-e
\p lKj } G18F&c~ else sqEI4~514 { $?Yry.2 for(int i=0;i<nStartPos.length;i++) /oR0+sH] { Dv| #u|iw nStartPos = (long)(i*(nFileLength/nStartPos.length)); @mOH"acGn? } k;K)xb[w | for(int i=0;i<nEndPos.length-1;i++) U
9_9l7&r { "+kL)] nEndPos = nStartPos[i+1]; fkuLj%R } ii[F]sR\ nEndPos[nEndPos.length-1] = nFileLength; qkt0**\ } =
s>T;| } zKw`Md .aO,8M u$DHVRrF< //启动子线程 Wvbf"hq fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; kpJ@M%46
for(int i=0;i<nStartPos.length;i++) UtPLI al { !}YAdZJ fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), %`>nS@1zp siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ?I6fye7 nStartPos,nEndPos,i); m? eiIrMW Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); >zw.GwN| fileSplitterFetch.start(); q*U*Fu+ } K{&mI/; // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), nxUJN1b!N siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); _-q.Q^ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", pWy=W&0~qf nEndPos = " + nFileLength); YLqGRE`W // fileSplitterFetch[nPos.length-1].start(); $bW3_rl%X f\]sz?KY _,p/l&< //等待子线程结束 $+P>~X) //int count = 0; ?oVx2LdD| //是否结束while循环 %-)H^i~]% boolean breakWhile = false; /xsF90c\h 1n=lqn/ &~8oQC-eF while(!bStop) N >FKy'.gk { ]JCvyz
H
write_nPos(); Ja,wfRq Utility.sleep(500); KC/=TSSXd. breakWhile = true; -m)X]]~C pOGeruu? v=0(~<7B for(int i=0;i<nStartPos.length;i++) GR&z, { .:@Ykdm4I if(!fileSplitterFetch.bDownOver) fKeT,U`W { GGNvu)" breakWhile = false; Bzkoo J break;
3L<wQ( } 7op`s5i } &+cEV6vb+ if(breakWhile) iIMd!Q.)@ break; ~D<IB#C D&od?3}E "Ue.@> //count++; Mmxlp.l //if(count>4) 5*+!+V^?X // siteStop(); (zgW%{V@ } 0xxg|;h.,g d6'{rje( c9HrMgW System.err.println("文件下载结束!"); n!NS(.o } tXoWwQD;Y catch(Exception e){e.printStackTrace ();} q;R],7Re } ;|pBFKx J#w
J4! }T; P~aG //获得文件长度 Tu$f? public long getFileSize() Wl B { b<a4'M int nFileLength = -1; (pY 7J try{ @Fluc,Il URL url = new URL(siteInfoBean.getSSiteURL()); +
,%&e HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); B|R@5mjm httpConnection.setRequestProperty("User-Agent","NetFox"); Sx708`/Ep ]Y%Vio JG" R\2 int responseCode=httpConnection.getResponseCode(); ey2S#%DF] if(responseCode>=400) $CY~5A `l9 { @aAW*D~-J processErrorCode(responseCode); |%J {RA return -2; //-2 represent access is error 4[.oPK=i } 4[;X{ ! F<L
EQ7T
W{5#@_pL String sHeader; _kj wFq ur3(HL [NaN>BZ? for(int i=1;;i++) !qv ea,vw { (MR_^t //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); zfc'=ODX //Utility.log(in.readLine()); SW*"\X; sHeader=httpConnection.getHeaderFieldKey(i); : ]sUpO if(sHeader!=null) $K]m{ { Z1 Bp+a3 if(sHeader.equals("Content-Length")) MXw hxk#E { b6Wqr/ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); byLft1 break; b:Wm8pp? } xCg52zkH# } ox(j^x]NC else <}E!w_yi break; pnjXf.g"O } C1jHz } /DK"QV!]s catch(IOException e){e.printStackTrace ();} mzeY%A<0^ catch(Exception e){e.printStackTrace ();} bL'aB{s Jll-`b 1 e4!:c^? Utility.log(nFileLength); X' d9[). $ {O# Km(n7Ah" return nFileLength; $"FQj4%d } m;'6MHx; PK{acen jF0jkj1&/[ //保存下载信息(文件指针位置) {)BTR %t private void write_nPos() gu0j.XS^ { \9cG36 try{ 6G
#}Q/ output = new DataOutputStream(new FileOutputStream(tmpFile)); :+qF8t[L output.writeInt(nStartPos.length); pm_`>3 for(int i=0;i<nStartPos.length;i++) ;5zz<;Zy { x c/}#>ED // output.writeLong(nPos); E7.2T^o;M output.writeLong(fileSplitterFetch.nStartPos); P>s[tM output.writeLong(fileSplitterFetch.nEndPos); !ePr5On } XZsz/# output.close(); mVVD! } +3BBQ+x! catch(IOException e){e.printStackTrace ();} 8zRP(+&W catch(Exception e){e.printStackTrace ();} ZZHDp&lh} } ]L9s%]o DVSL [p?_ np8gKVD //读取保存的下载信息(文件指针位置) |C!ox hu< private void read_nPos() ^G4Py<s { .!f$
\1l try{ Y8m1M-#w DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); .#rJ+.2 int nCount = input.readInt(); `(YxI nStartPos = new long[nCount]; umiBj)r nEndPos = new long[nCount]; E%rk[wI for(int i=0;i<nStartPos.length;i++) 'eLqlu|T { M_"L9^^>N nStartPos = input.readLong(); q1QL@Ax nEndPos = input.readLong(); \P.I)n`8 y } X~lVVBO input.close(); h| ,:e;>} } 6LalW5I catch(IOException e){e.printStackTrace ();} BI3@|,._N catch(Exception e){e.printStackTrace ();} Lv|q } n?- }) {so`/EWa [H6hyG~ private void processErrorCode(int nErrorCode) a0D%k: k5 { D|e
uX7b System.err.println("Error Code : " + nErrorCode); l|kSsP:GO } FFu9&8Y ,.kha8v CIb2J)qev //停止文件下载 U)E(`{p] public void siteStop() >8k_n { GBRa.;Kk bStop = true; /atW8 `& for(int i=0;i<nStartPos.length;i++) R)QC)U fileSplitterFetch.splitterStop(); /ro=?QYb ~GL]wF2# n ~shK<!C } -'t)=YJ } "Y~:|?(@- //负责部分文件的抓取 c_vqL$Dl **FileSplitterFetch.java cc~O&?)i */ n=y[CKS package NetFox; %-c*C $ P} 0%-JC v":x4!kdX import java.io.*; b:tob0TB import java.net.*; Zc
W:6po> j2QmxTa! /SrCElabP public class FileSplitterFetch extends Thread { 1Cv- ?u "
4@ mF,Y?ax String sURL; //File URL zi]\<?\X long nStartPos; //File Snippet Start Position &Low/Y'.jJ long nEndPos; //File Snippet End Position s'%R int nThreadID; //Thread's ID 8W,Jh8N6 boolean bDownOver = false; //Downing is over FVaQEMZ^ boolean bStop = false; //Stop identical m^ tFi7c FileAccessI fileAccessI = null; //File Access interface y:~ZLTAv C|}iCB -"=U?>( public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException `f*Q$Ulqx { Q9Kve3u-i this.sURL = sURL; mi,E- this.nStartPos = nStart; P<M?Qd1. this.nEndPos = nEnd; $W!!wN=B nThreadID = id; kBD>-5Sn_T fileAccessI = new FileAccessI(sName,nStartPos);//定位 ihIVUu-M } \=:~ki=@B )qo {c1X d@XV:ae public void run() __|+w<] { .QZaGw=,z while(nStartPos < nEndPos && !bStop) _qw?@478 { #xX5,r0 B0dQ@Hq* a&c6.#E{y try{ <{V(.=11 URL url = new URL(sURL); Mxyb5h HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); glM$R &/ httpConnection.setRequestProperty("User-Agent","NetFox"); n%-R[vW String sProperty = "bytes="+nStartPos+"-"; `(_s|-$ httpConnection.setRequestProperty("RANGE",sProperty); KH(%? Utility.log(sProperty); gMWjk7 <}<zgOT[1! =cm~vDl[ InputStream input = httpConnection.getInputStream(); lku[dQdk //logResponseHead(httpConnection); Ye2 {f"F _AAaC_q !g5xq byte[] b = new byte[1024]; VUPXO int nRead; "alyfyBu'M while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) x4;"!Kq\ { kEOS{C%6R nStartPos += fileAccessI.write(b,0,nRead); JBE!j-F //if(nThreadID == 1) x:),P-~w // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); m[~V/N3 } Xejo_SV&? >qS9PX 5-aj2>=7 Utility.log("Thread " + nThreadID + " is over!"); x[h^[oF0 bDownOver = true; bwD,YC //nPos = fileAccessI.write (b,0,nRead); S ?{#r } zsX1 QN16 catch(Exception e){e.printStackTrace ();} Z>)Bp/- } xJ>fm%{5 } OBOtu u. p"n$!ilbm fGUE<l //打印回应的头信息 >O*IQ[r- public void logResponseHead(HttpURLConnection con) CE#gfP { F`gi_;c for(int i=1;;i++) *=]&&< { ^(vs.U^U< String header=con.getHeaderFieldKey(i); _ba>19csq% if(header!=null) #gz
M| //responseHeaders.put(header,httpConnection.getHeaderField(header)); 9$cWU_q{ Utility.log(header+" : "+con.getHeaderField(header)); /67 h&j else g.BdlVB\ break; q"\Z-D0B4 } e+~\+:[? } AgS7J(^&3 wQ^EYKD -:|?h{q?u public void splitterStop() `o=q%$f#k~ { }4 )H bStop = true; d:BG#\e]v } Y w^m wSa)*]% &dM.
d! } 0AZ")<^~7 ZCmgs4W! LAB=Vp1y3[ /* ,?>s>bHV **FileAccess.java X:HacYqtC *//文件访问(定位,写) T ]t'39 package NetFox; ZA0mz 65 import java.io.*; vHyC; 4' zHA!%>%' 7 HIeJ public class FileAccessI implements Serializable{ TE3lK(f d,+Hd2o^X //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 B2>H_dmQ RandomAccessFile oSavedFile; ;LcZ`1 long nPos; 3EJj9}#x"' G<}()+L $"+djI?E9 public FileAccessI() throws IOException B3We|oe ! { rDm~h~u5 this("",0); 1oR7iD^ } Zq+v6fk_Mn >3p\m [k.t WA,& public FileAccessI(String sName,long nPos) throws IOException Q# ~Q=T'< { |2O]R s oSavedFile = new RandomAccessFile(sName,"rw"); 4 ezEW|S this.nPos = nPos; 6 Q%jA7 oSavedFile.seek(nPos); R%{<mno/_ } SIBtmm1W 7''??X A,JmX public synchronized int write(byte[] b,int nStart,int nLen) ns9U/:L { /rK}?U int n = -1; wxKX{Bs try{ ?qPo=~y01 oSavedFile.write(b,nStart,nLen); SheM|I~de n = nLen; uxXBEq; } J%u=Ucdh catch(IOException e) 0(eBZdRO { a L} %2 e.printStackTrace (); J"!vu.[ } cS5Pl ,]|#[ 8 j'Gt&\4 return n; PQy4{0 _ } -.1y(k^4E '*K :
lx YmL06<Mh } 95ZyP! ni.cTOSx nCUg,;_= /* w mn+ **SiteInfoBean.java A
9( x */ 3x`| package NetFox; "un]Gc umjt]Gu[ }q_<_lQ public class SiteInfoBean { 2M.fLQ? Kz~ps
5 j]{_s"O private String sSiteURL; //Site's URL N4v~;;@(
private String sFilePath; //Saved File's Path NSxoF3 private String sFileName; //Saved File's Name PRx8I
. private int nSplitter; //Count of Splited Downloading File 2<i!{;u$qL '=39+*6? I@T8Iv= public SiteInfoBean() Z_$%. {//nSplitter的缺省值为5 "H7dft/ //default value of nSplitter is 5 Xnt~]k\" this("","","",5); #jkf1"8 C } v&9y4\j Z?6%;n^ 54 Lb!Fcf|h public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) pV9IHs} { &q3"g*q sSiteURL= sURL; FEW14U'O sFilePath = sPath; DGRXd# sFileName = sName; )B
T this.nSplitter = nSpiltter; T/b6f;t-s 0]'7_vDs| \.0^n3y } VU#`oJ:{ 3-[q4R 7r7YNn/? public String getSSiteURL() 'H3^e} { @ju@WY45$^ return sSiteURL; rNrxaRQ } RmI]1S_= <lgYcdJ eX?OYDDC0j public void setSSiteURL(String value) Tl%`P_J)-S { EMh7z7}Rr sSiteURL = value; ERUz3mjA/ } ]_Vx{oT7 hW%TM3l} t#V!8EpBg public String getSFilePath() (]Z_UTT { /sUYU(3 return sFilePath; Ghu#XJB? } riUwBiVa?2 2V"B:X\ v:f}XK< public void setSFilePath(String value) ]%hn`ZJ { s6H]J{1F sFilePath = value; RM]\+BK } fFMlDg[]; 2L:_rR#w q['Euy public String getSFileName() J28M@cn { Tre]"2l return sFileName; ;%B(_c } bk[U/9Z\ Pj[PIz Cw
iKi^m public void setSFileName(String value) 1Lc#m`Jln { 6o!!=}'E[ sFileName = value; O_2pIbh } BHIRHmM<Y Lco~,OE ~d
o9;8v public int getNSplitter() Sj-n;F|=X { spGb!Y`mR return nSplitter; 9`T)@Uj2n } HD@$t)mn 3]OE}[R Y4OPEo 5o public void setNSplitter(int nCount) e{h<g>7 { rDD:7*z nSplitter = nCount; HeK/7IAqp } [/,) } 8{|8G-Mi ",p;Sd 0QBiC]9 /* 6|K5!2 **Utility.java
d:_t-ZZo */ 0m7Y>0wC6T package NetFox; S(o#K|)> \(3y7 D !lREaSM public class Utility { gcii9vz
` q
VjdOY:z gD0eFTN public Utility() OtY`@\hy { a Fc1|.Nm .4_o>D A|CmlAW~^ } *]. 7dec/ sW Qfr$^A //线程睡眠 Bp*K]3_ public static void sleep(int nSecond) &Q9qq~ { KLU-DCb% try{
jPC[_g Thread.sleep(nSecond); Ot$-!Y;< } >L|;|X!m9\ catch(Exception e) [=x[ w70 { Jz?j[ e.printStackTrace (); ;5wn67' } `Y+J-EQ } :Gv1?M ~fBtQGdX //日志 WKQ^NEqr3 public static void log(String sMsg) =Ee&da^MB { cec9l65d System.err.println(sMsg); n?oW < & } ]fm'ZY& 4]rnY~ tN[L@t9#cr public static void log(int sMsg) _geWE0
E { #m lS}~n System.err.println(sMsg); Hh%I0# } Jx_cf9{ } _G_Cj{w lackB2J9 A ?42<J%p
/* zuP B6W ^ **TestMethod.java
*aX F5S */ B6=ebM`q package NetFox; ,c$,!.r rjl`&POqc 32l3vv.j public class TestMethod { a! (4Ch v.\*./-i -Btk 3 public TestMethod() 2;xIL] { ///xx/weblogic60b2_win.exe +_7*iJtD5 try{ ~)*,S^k(C. SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); `{4i)n%e& //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); .\K_@M SiteFileFetch fileFetch = new SiteFileFetch(bean); tWo{7) Eb fileFetch.start(); _my"%@n } 3sc+3-TF catch(Exception e){e.printStackTrace ();} *RT>`,t/ 6~OoFm5 bf0+DvIB } )Z[ft 9K/HO!z m 2-Sx public static void main(String[] args) s.EI`*xylY { eD-#b| new TestMethod(); R|JC1f8P5 } `id9j } mCRt8rY; 点击下载更多相关资料
|