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/*
P+0xi **SiteFileFetch.java 'r%oOZk)z */ jxaoQeac package NetFox; v2{s2kB= import java.io.*; |Y11sDa9h import java.net.*; ]r6bJ2 Bl];^W^P 6pR#z@, public class SiteFileFetch extends Thread { $@)d9u
cd HV.7IyBA^ X;:xGZ-oY SiteInfoBean siteInfoBean = null; //文件信息Bean +kL(lBv' long[] nStartPos; //开始位置 ]o$/xP long[] nEndPos; //结束位置 h6 i{5\7. FileSplitterFetch[] fileSplitterFetch; //子线程对象 3~ZVAg[c long nFileLength; //文件长度 lv*uXg.k^ boolean bFirst = true; //是否第一次取文件 9,CC1f boolean bStop = false; //停止标志 . $YF|v[= File tmpFile; //文件下载的临时信息 vM/v}6;_K2 DataOutputStream output; //输出到文件的输出流 AtDrQ<>y' $lA,{Q //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 59J9V3na public SiteFileFetch(SiteInfoBean bean) throws IOException UAZ&*{MM^ { hJsC
\ C,^ siteInfoBean = bean; 4
G[hU4L //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Yur)_m tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); @/L. BfTz if(tmpFile.exists ()) |$2N$6\SP { J
*?_SnZ bFirst = false; Vz]=J;`Mz read_nPos(); 5i#w:O\cz } ^^l"brPa else 9G+rxyWMW { D:tZiS=0 nStartPos = new long[bean.getNSplitter()]; ycD.:w p\' nEndPos = new long[bean.getNSplitter()]; 'Y\"^'OU\ } @98SC}}u %)Dd{|c QL18MbfqP T9-a
uK0d } yW?%c#9D bU`yymf{L {+9\o ~ public void run()
Tpx,41(k { 98'XSL| //获得文件长度 %0]b5u //分割文件 [_b='/8 //实例FileSplitterFetch }Xv1KX' //启动FileSplitterFetch线程 I>Fh*2 //等待子线程返回 a&Du5(r;! try{ XF$]KAL0 if(bFirst) Tk&9Klo { %nf=[f nFileLength = getFileSize(); s,H(m8#> if(nFileLength == -1) >[4|6k|\x { B
RjKV System.err.println("File Length is not known!"); Vj`s_IPY } .MARF else if(nFileLength == -2) +N:6wZ7<f { l zPS
RT System.err.println("File is not access!"); mIEaWE;E" } q<[ke
else U]
-@yx { f?zK" for(int i=0;i<nStartPos.length;i++) ]Wt6V^M'@ { )wv[!cYyW nStartPos = (long)(i*(nFileLength/nStartPos.length)); .t[ZXrd|0 } .+L_!A for(int i=0;i<nEndPos.length-1;i++) l!V| T? { 4Olv8nOe< nEndPos = nStartPos[i+1]; aw%vu } )"jn{%/t nEndPos[nEndPos.length-1] = nFileLength; ]{+M>i[ } [k7N+W8 } fUKdC\WL LY:?OGh ?mfWm{QTt //启动子线程 8!Mzr1: fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ,xe@G)a for(int i=0;i<nStartPos.length;i++) %aE7id>v6 { (`.qG
&6p fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), G:C6`uiy` siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 8kM0
nStartPos,nEndPos,i); <ZC^H Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); '#
IuY fileSplitterFetch.start(); !XA%[u } p2DNbY\] // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), as|c`4r\O siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ;6
6_G Sjz // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", }rA+W-7 nEndPos = " + nFileLength); mYOdBd // fileSplitterFetch[nPos.length-1].start(); )LrCoI =| ( WtE`f;Q _6S
b.9m //等待子线程结束 >c\v&k>6. //int count = 0; .O%1)p //是否结束while循环 CSqb)\8Oi* boolean breakWhile = false; akc"}+-oX
)P9{47 {G1aAM\Hz while(!bStop) 1L=Qg4 H { s]<r write_nPos(); v\9,j Utility.sleep(500); cU5"c)$' breakWhile = true; 2T(,H.O hB$Y4~T% m/c&/6nk for(int i=0;i<nStartPos.length;i++) 9_A0:S9Z { /xm#:+Sc if(!fileSplitterFetch.bDownOver) :;*#Qh3" { kPX2e h breakWhile = false; pM'IQ3N break; 5v>{Z0TE[6 } qwNKRqT } 3auJ^B} if(breakWhile) NuS|X
break; {}J@+Zsi (06Vcqg ;ko[(eFN@ //count++; MLD>"W //if(count>4) e]*=sp!T // siteStop(); _QMHPRELk } _?]BVw fByh";<`P l88a#zUQDN System.err.println("文件下载结束!"); &c<}++'h } Q#ZD&RZ9. catch(Exception e){e.printStackTrace ();} yK%GsCJd: } <X I35\^ 4>"cc@8&~ 4lh
//获得文件长度 p-'6_\F.Ke public long getFileSize() q4.dLU,1 { 'f?&EsIV? int nFileLength = -1; eFj6p< try{ _z(5e URL url = new URL(siteInfoBean.getSSiteURL()); Ad`[Rt']kI HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); B`?N0t%X httpConnection.setRequestProperty("User-Agent","NetFox"); rv%ye
H
C=dx4U~
*n*N|6+ int responseCode=httpConnection.getResponseCode(); PZ!dn%4jy if(responseCode>=400) yhtvr5z1 { bhqq processErrorCode(responseCode); I~]Q55 return -2; //-2 represent access is error (XG[_ } Q+!0)pG5# Oa\ `; rTsbP40 String sHeader; +>!B(j\gx O{B
e )E~ ^0s\/qyqm for(int i=1;;i++) J%\~<_2ny { x'@32gv //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Y0X"Zw //Utility.log(in.readLine()); -#S)}NEn sHeader=httpConnection.getHeaderFieldKey(i); CEX}`I*- if(sHeader!=null) 4g 6ksdFQ { ?lc[hH if(sHeader.equals("Content-Length")) r}y[r}vk { 7dlKdKH nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); N7~)qqb break; rZ!Yi*? f } :<N6i/ } RhV:Z3f`6 else {KU. break; X@yr$3vC } e:$7^Y,U/ } /Oggt^S catch(IOException e){e.printStackTrace ();} W) 33;E/} catch(Exception e){e.printStackTrace ();} K{zCp6 2GiUPtO&Gj FM9X}%5nu9 Utility.log(nFileLength); ;Y@!:p-H %l8*t$8 4#@W;' return nFileLength; UKKSc>D1 } sw41wj tIyuzc~U Y3P.| //保存下载信息(文件指针位置) ];pf private void write_nPos() p- "Z'$A` { Vedyy\TU try{ $*AC>i\ output = new DataOutputStream(new FileOutputStream(tmpFile)); r)6uX output.writeInt(nStartPos.length); >k&8el6h for(int i=0;i<nStartPos.length;i++) {*?sVAvj { @q> ktE_ // output.writeLong(nPos); V\@jC\-5Vt output.writeLong(fileSplitterFetch.nStartPos); N;Z`%& output.writeLong(fileSplitterFetch.nEndPos); *?^Z)C> } Sg. +`xww3 output.close(); e$Xq } C5PmLiOHY> catch(IOException e){e.printStackTrace ();} 4-7kS85 catch(Exception e){e.printStackTrace ();} |RR%bQ^{ } fjIcB+Z _e?q4>B)c ]DC;+;8Jc //读取保存的下载信息(文件指针位置) I!$jYY2 private void read_nPos() Ic[}V0dk { 49+ >f try{ p{ @CoOn DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); mVv\bl?< int nCount = input.readInt(); G}!7tU nStartPos = new long[nCount]; 6o=qJ`m[? nEndPos = new long[nCount]; xH_A@hf; for(int i=0;i<nStartPos.length;i++) Lh8bQH { =zeFK_S! nStartPos = input.readLong(); %6NO 0 F^ nEndPos = input.readLong(); .
]o3A8 } 2E`~ qn input.close(); U,Z"G1^ } [ME}Cv`?<E catch(IOException e){e.printStackTrace ();} u\{qH!?t catch(Exception e){e.printStackTrace ();} ]Q6+e(:~ZH } .e`,{G(5q7 ?Yq J.F; .O5LI35, private void processErrorCode(int nErrorCode) r-RCe3%g% { w=f0*$ue+w System.err.println("Error Code : " + nErrorCode); |Z`M*.d+ } @gt)P4yE )Qh>0T+( cS<TmS! //停止文件下载 Qw24/DJK public void siteStop() .UM<a
Ik { t6'61*)|0 bStop = true; D9 qX->p for(int i=0;i<nStartPos.length;i++) ! jbEm8bt fileSplitterFetch.splitterStop(); _Kc1 Dh2:2Rz=#7 2.[_t/T } Y%<`;wK=^ } `9.dgV //负责部分文件的抓取 I2TD.wuIW **FileSplitterFetch.java mD9STuA$H */ 79)A%@YHQQ package NetFox; B0f_kH~p~ "'['(e+7 :{[<g]( import java.io.*; u5Qp/ag?N import java.net.*; `S"W8_m M[ x_#m| jja{*PZ6H public class FileSplitterFetch extends Thread { X'cf&>h r%0pQEl [NYj.#,oR String sURL; //File URL IE&_!ce long nStartPos; //File Snippet Start Position JXpoCCe long nEndPos; //File Snippet End Position >|wKXz int nThreadID; //Thread's ID f?,-j>[.=f boolean bDownOver = false; //Downing is over ~O \}/I28 boolean bStop = false; //Stop identical ?n!lUr$:y FileAccessI fileAccessI = null; //File Access interface 4\p$4Hs} tf4*R_6;1$ ecn}iN public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException :/+>e
IE { 2
9q?$V( this.sURL = sURL; +0VG[c\8 this.nStartPos = nStart; A#<vG1 this.nEndPos = nEnd; S8\+XJ nThreadID = id; aK]7vp+ fileAccessI = new FileAccessI(sName,nStartPos);//定位 E@:Q 'g% } TbOJp [}z?1Gj;W( 2=>*O public void run() e#tIk;9Xz { nz^nptw while(nStartPos < nEndPos && !bStop) XJe/tR { X]qCS0GD' GGH;Z WSe #C4|@7w% try{ :]'q#$! URL url = new URL(sURL); d!o.ASL{ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); _*Pfp+if httpConnection.setRequestProperty("User-Agent","NetFox"); xJ-*%'(KZ String sProperty = "bytes="+nStartPos+"-"; 1Yud~[c httpConnection.setRequestProperty("RANGE",sProperty); cn$5:%IK Utility.log(sProperty); ji}#MBac ASR-a't6 wTTRoeJ} InputStream input = httpConnection.getInputStream(); djUihcqA` //logResponseHead(httpConnection); lqF>=15 ~L~]QN\3 u=%y byte[] b = new byte[1024]; o~= iy int nRead; s3seK6x' while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ! Q!&CG5l { dsV ~|D6: nStartPos += fileAccessI.write(b,0,nRead); 7R: WX: //if(nThreadID == 1) ozU2 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); [eyb7\#
} V"O9n[ | H.:9:I[n KGu= ; Utility.log("Thread " + nThreadID + " is over!"); `qE4U4 bDownOver = true; J;~E<_"Hn //nPos = fileAccessI.write (b,0,nRead); /9 pbnzn } W,Ty=:qm* catch(Exception e){e.printStackTrace ();} _
\l
HI } K5{{:NR$ } QP:9%f>= .:8[wI_f mH)OB?+lq //打印回应的头信息 GMBJjP&R] public void logResponseHead(HttpURLConnection con) PB+\jj { 5C B%=iL{ for(int i=1;;i++) g92dw<$> { ;Z*'D} String header=con.getHeaderFieldKey(i); (-\]A| if(header!=null) /l^y}o %? //responseHeaders.put(header,httpConnection.getHeaderField(header)); usy,V"{ Utility.log(header+" : "+con.getHeaderField(header)); UeA2c_
5 else zj{(p Z1 break; I0iY+@^5 } _lP4}9p } 7,h3V=^)Q Qwv '< 9\AS@SH{^T public void splitterStop() wlr Ign% { AFGwT%ZD bStop = true; KSc~GP_ } j{)~QD ? jB!W2~Z Y''6NGf } a%E8(ms37y M6_-f ;. r{S=Z~J /* =U NT.] **FileAccess.java )pS8{c)E *//文件访问(定位,写) dQ<(lzS~ package NetFox; 9`BEi(z import java.io.*; &\k?xN zw]3Vg{T Ukc'?p,* public class FileAccessI implements Serializable{ jn$j^51`C wWTQ6~Y%d //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 '0RRFO RandomAccessFile oSavedFile; ^X&)'H long nPos;
4{Udz! 9 #Y2`pT zmb@*/fK public FileAccessI() throws IOException p![&8i@ym { vU}: U)S this("",0); $ 6!iBX@ } Sph*1c(R *Tp]h 0 vTd-x>n public FileAccessI(String sName,long nPos) throws IOException >jMH#TZaX { "15=ET oSavedFile = new RandomAccessFile(sName,"rw"); ]G*$W+G] this.nPos = nPos; +i=p5d5 oSavedFile.seek(nPos); C8.W5P[U } e!Br>^8l JT)k :!O><eQw public synchronized int write(byte[] b,int nStart,int nLen) =Z`0>R` { >A($8=+#x int n = -1; U
Du~2% try{ HN68!v}C| oSavedFile.write(b,nStart,nLen); cy3M^_5B< n = nLen; fK_~lGY( } SA+d&H}Fc catch(IOException e) 9|=nV|R'6 { lR@& Z6lw e.printStackTrace (); W2 <3C } K/| .&iN(Bd A"4@L*QV return n; 3ji:O T } +
|C=ZU ^f|<R8 ` -~O/NX } V#J"c8n 7|Dn+= lw[<STpD; /* ([KN*OF **SiteInfoBean.java XG&K32_fs */ X NE+(Bt package NetFox; }0;Sk(B> C[8Kl D $XGtS$ public class SiteInfoBean { 0T))>.iu# {eR9 ;2! {|6z+vR private String sSiteURL; //Site's URL gz61FW private String sFilePath; //Saved File's Path 5B*qbM private String sFileName; //Saved File's Name $.:3$et@/ private int nSplitter; //Count of Splited Downloading File sPCMckt |>2:eH CH;;V3 public SiteInfoBean() tpYa?ZCM
{//nSplitter的缺省值为5 eYEc^nC,c) //default value of nSplitter is 5 Hk u=pr3Gn this("","","",5); 4RQ5(YTTuR } o56kp3b)b ~@P )tl> j=ihbR^]Tl public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) Q2c*.Y { N9]xJgTze sSiteURL= sURL; 4ht\&2&: sFilePath = sPath; uyT/Xzo3 sFileName = sName; Rp/-Pv
this.nSplitter = nSpiltter; -H\,2FO O2 v. 5pJ*1pfeo } L~eAQR bUs|t t5)J;0/ public String getSSiteURL() TyOH`5D { uV~e|X
"9s return sSiteURL; :woa&(wN;1 } <Wy>^<` *]x_,:R6Ow a)S7}0|R public void setSSiteURL(String value) C) .2gQ
G { ce' TYkPM sSiteURL = value; 0JXqhc9' } TpP8=8_Lh <AUWby," l!IGc: public String getSFilePath() ``9 GY { 2[up+;%Y return sFilePath; oT3Y!Y3=< } #C\4/g?=, Jqru AW< >Z\BfH public void setSFilePath(String value) ]a/'6GbR { GZ8:e3ri sFilePath = value; I7mG/ } <zfKC ;fGx;D (M`|'o! public String getSFileName() Ro r2qDF { LC-)'Z9}5 return sFileName; ]US[5)EL- } %;O}FyP s, XM9h>P4 Y8ehmz|g]J public void setSFileName(String value) H06Bj(Y! { G$5m$\K sFileName = value; ]W)
jmw'mo } \+Y!ILOI GDPo`#~ HFS+QwHW public int getNSplitter() jvs[ / { .wc
= ] return nSplitter; Jps .;yjk } ;&?pd"^<_Z A/ 0qk daX*}Ix public void setNSplitter(int nCount) 7& 6Y { +v15[^F nSplitter = nCount; R]QpMj%o } nY^Nbh0 } d
4O ;[6&0!N\ ~FUa:KYD /* k'+}92
o **Utility.java ,
Oli */ @vs@>CYdz package NetFox; ~7SH4Cr J70D+ N5 n> public class Utility { L2|aHI1'l 0*7*RX 8A{6j public Utility() 7X'y>\^w^> { ;NsO vWY(% Q, r4eUZ .8R } RP`
`mI ?_ RYqolz //线程睡眠 ek)Xrp:2 public static void sleep(int nSecond) 6/2v { x /
XkD]Hq try{ R^P_{_I*" Thread.sleep(nSecond); 8$}OS- } 2)\vj5<~$ catch(Exception e) t(?<#KUB- { 7+XM3 e.printStackTrace (); gfo}I2" } 'sU)|W(3U } &" h]y?Q "mZ.V //日志 ?R6`qe_F public static void log(String sMsg) 0BTLcEqgZ { <_:zI r, System.err.println(sMsg); kRot7-7I| } +d39f-[ E
$6ejGw- 1d v=xe. public static void log(int sMsg) ')o0O9/; { xP@/9SM System.err.println(sMsg); r
nBOj#N } }uQ${]&D } Do;#NLrWb yJD>ny y1,5$0@G /* |:2c$zq **TestMethod.java m m, lhIh */ ULl_\5s2 package NetFox; y1C/v:;
lbkLyp2 #T%zfcUj public class TestMethod { _413\`%8? xzk}[3P{ l3J$md|f public TestMethod() oI@9}* { ///xx/weblogic60b2_win.exe nem@sB;v# try{ PDC]wZd/ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); {;k_!v{ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); K`4GU[ul SiteFileFetch fileFetch = new SiteFileFetch(bean); V0NVGRQ fileFetch.start(); sh6(z?KP } %#k,6;m catch(Exception e){e.printStackTrace ();} gaeOgP.0 =kFuJ
x)f `-O=>U5nH } _4R,Ej} y Nva1I og-]tEWA1 public static void main(String[] args) sv=H~wce { K^H>~`C= new TestMethod(); Z[}
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