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/* M4D @G **SiteFileFetch.java +u&[ j/ */ zk"8mTg package NetFox; iCLH import java.io.*; @]]&^ 7 import java.net.*; 9g\;L:' ~>N63I6 *AP"[W public class SiteFileFetch extends Thread { F{.\i *$ IJt'[&D +xvn n SiteInfoBean siteInfoBean = null; //文件信息Bean G$2@N6 long[] nStartPos; //开始位置 Oxa8u e? long[] nEndPos; //结束位置 .cHkh^EDY FileSplitterFetch[] fileSplitterFetch; //子线程对象 no W]E}nN long nFileLength; //文件长度 |}.}q boolean bFirst = true; //是否第一次取文件 zvVo-{6 boolean bStop = false; //停止标志 bkc*it File tmpFile; //文件下载的临时信息 hNhEA $X5 DataOutputStream output; //输出到文件的输出流 {
0-on"o Ctn
4q'Q //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) z:$ibk4#h public SiteFileFetch(SiteInfoBean bean) throws IOException hO&_VCk { R7U%v"F>` siteInfoBean = bean; !/!ga)Y //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ];lZ:gT tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); jCXBp>9$M if(tmpFile.exists ()) &q@brX<,= { .6T0d
4,1 bFirst = false; Q4hY\\Hi read_nPos(); R :(-"GW' } 6M.|W; else \=7jp|{Yl { Mm(#N/ nStartPos = new long[bean.getNSplitter()]; %1:caa@_p nEndPos = new long[bean.getNSplitter()]; -- FzRO{D } JSi0-S[Y{ ;g? |y(xv vg5_@7 /s~S\dG } 3z(4axH' "TJ*mN.i{} k=[s%O6H public void run() 92t.@!m` { -fl6M-CYX //获得文件长度 ,oh;(|= //分割文件 ]d-.Mw,' //实例FileSplitterFetch vsZ?cd //启动FileSplitterFetch线程 }{VOy PG //等待子线程返回 \Dy|}LE try{ A+gS'DZ9C if(bFirst) W>i"p~! { /.<v,CR nFileLength = getFileSize(); Y#XRn_2D if(nFileLength == -1) QxdC[t$Lp { B~N3k System.err.println("File Length is not known!"); KMz!4N } )S(Ly. else if(nFileLength == -2) XC)9aC@s { *;]}`r System.err.println("File is not access!"); }ePl&-9T } *=2W:,$ else ~bxev/$d { <K`E*IaW for(int i=0;i<nStartPos.length;i++) j7gw?, { xsn=Ji2 F nStartPos = (long)(i*(nFileLength/nStartPos.length)); 4$[o; t> } CDRbYO for(int i=0;i<nEndPos.length-1;i++) {\(MMTQ { gWGDm~+ nEndPos = nStartPos[i+1]; cO*g4VL"[ } N
UX | nEndPos[nEndPos.length-1] = nFileLength; QJRnpN/ } sHc-xnd } (X,i,qK/ xBA"w:< #aU!f"SS //启动子线程 *>KBDFI fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 5C9b*]-# for(int i=0;i<nStartPos.length;i++) e5>'H!) { V7Cnu:0_ fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), "H).2{3(x siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), fDf[:A,8 nStartPos,nEndPos,i); DJL.P6 -W Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); $VvgzjrH fileSplitterFetch.start(); &]#L'D!" } $vf gYl4q // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), R-S<7Q3E0= siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); #%\0][Xf // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", {9U!0h-2" nEndPos = " + nFileLength); fk5'v // fileSplitterFetch[nPos.length-1].start(); <[cpaZT, #mw!_]
@m9pb+=v //等待子线程结束 q\?s<l63 //int count = 0; > 0MP[ //是否结束while循环 Z|uvrFa boolean breakWhile = false; 3T F_$bd{ {uaDpRt GDL/5m# while(!bStop) 1xW!j!A; { B/1j4/MS write_nPos(); Oh*~+/u}q Utility.sleep(500); r
|C.K breakWhile = true; {fzX2qMZ] bGH#s {'5 j)mU`b_ for(int i=0;i<nStartPos.length;i++) A~bSB
n: ' { _|#abLh% if(!fileSplitterFetch.bDownOver) B2ln8NF#Q { )}`z<)3jP breakWhile = false; 6iyl8uL0J break; #dWz,e3 } q`'f
/CS } OuTV74 if(breakWhile) M?eP1v:<+G break; e$Ds2%SaT UhDQl%&He ]- 1(r, //count++; Xb%q9Z //if(count>4) WMf /
S"= // siteStop(); (@+pz/ } t<p#u=jOa z3tx]Ade 6(bN*. System.err.println("文件下载结束!"); z4:!*:.Asu } )t|:_Z catch(Exception e){e.printStackTrace ();} G&g;ROgY } \%a0Lp{ I [<RhaZz NZvgkci_(u //获得文件长度 [`\VgKeu public long getFileSize() AOR?2u { i<^X z int nFileLength = -1; Y\]ZIvTSb try{ )}@D\(/@ URL url = new URL(siteInfoBean.getSSiteURL()); ~v;I>ij HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); nHdQe httpConnection.setRequestProperty("User-Agent","NetFox"); XHk"nbj xpR`fq 1&=)Bxg4 int responseCode=httpConnection.getResponseCode(); Ek)drt7cy if(responseCode>=400) t{]Ew4Y4%O { U6M~N0)Yr processErrorCode(responseCode); Ib# -M;{ return -2; //-2 represent access is error U#[&( } 1!v{#w{u7 S;% &X ,<Q String sHeader; pWV_KS d?*]/ZiR PEf yHf7` for(int i=1;;i++) }HoCfiE=X { e'3V4iU] //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ="voJgvw //Utility.log(in.readLine()); $gUlM+sK sHeader=httpConnection.getHeaderFieldKey(i); |H?t+Dyn)q if(sHeader!=null) _Vr- bpAf { v76Gwu$d if(sHeader.equals("Content-Length")) W@T\i2r$z { {cXr!N^K nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); &>JP.//spi break; |(>`qL{| } QoZV6 } lmeTW0U@9( else tAAMSb9[d break; n~I-mR)" } BDI|z/~& } [H}>
2Q catch(IOException e){e.printStackTrace ();} {<,%_pJR catch(Exception e){e.printStackTrace ();} r].n=455[ ~7PD/dre #f2Ot<#- Utility.log(nFileLength); .4+Rac 5kiW@{m <w2h@ea return nFileLength; }=-0DSLVj } '=_(fa, yvYMk(LSF f% pT-# //保存下载信息(文件指针位置) *dw.=a9 private void write_nPos() e|]e\Or> { XGl2rX& try{ W+ S~__K output = new DataOutputStream(new FileOutputStream(tmpFile)); +S4n416K output.writeInt(nStartPos.length); io4<HN for(int i=0;i<nStartPos.length;i++) Cyg2o<O@ { ) E^S+ps // output.writeLong(nPos); [YOH'i&X output.writeLong(fileSplitterFetch.nStartPos); Z`S#> o output.writeLong(fileSplitterFetch.nEndPos); w2DC5ei' } b#_RZ output.close(); 2ioHhcYdJU } ~>CvZ7K catch(IOException e){e.printStackTrace ();} +RooU?Aq catch(Exception e){e.printStackTrace ();} 7:jLZ!mgi } 7f>=-sv B>53+GyMV ok:uTeJI //读取保存的下载信息(文件指针位置) S1QMS private void read_nPos() uM2@&)u { AF'< try{ %(YQ)=w DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); `Lr], >aG int nCount = input.readInt(); /|?$C7%a\D nStartPos = new long[nCount]; up5f]:! nEndPos = new long[nCount]; A=<7*E for(int i=0;i<nStartPos.length;i++) 2HeX( rB { &,&+p0CSI! nStartPos = input.readLong(); hXTfmFy{n nEndPos = input.readLong(); hF2e-- } 42dv3bE" input.close(); 1/}H
0\9' } =-U0r$sK+F catch(IOException e){e.printStackTrace ();} sO.MUj; catch(Exception e){e.printStackTrace ();} gm9*z.S\' } &K/?# i7Qb~RW KQ\K:# private void processErrorCode(int nErrorCode) .#( vx; { Q-<]'E#\( System.err.println("Error Code : " + nErrorCode); 6
5govor } %f]#P8VP y[_k/.1 (]]hSkE //停止文件下载 !xsfhLZK public void siteStop() *vb"mB { ?bZH Aed bStop = true; ?NMk|+ for(int i=0;i<nStartPos.length;i++) 0m_yW$w fileSplitterFetch.splitterStop(); )3h\QE!z sYKx3[ V/ AQ,lLn+ } a-NTA } }Ng P`m //负责部分文件的抓取 <M:BN6-yG **FileSplitterFetch.java 7e"}ojt$ */ 8['R D`O package NetFox; .+:iAnf Q#eMwM#~ T[\1=h] import java.io.*; HI8mNX3 "j import java.net.*; '`jGr+K,wU :v^/k]S D3o,2E(o public class FileSplitterFetch extends Thread { > 80{n8 /!5Wd(: ] ?DU8 String sURL; //File URL m{q'RAw long nStartPos; //File Snippet Start Position (:l6R9'= long nEndPos; //File Snippet End Position 5JzvT JMx int nThreadID; //Thread's ID n>'(d*[e& boolean bDownOver = false; //Downing is over S=qh7ML boolean bStop = false; //Stop identical KFrsXf FileAccessI fileAccessI = null; //File Access interface $)M3fZ$# )iN;1> f}-'67*Y public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException <i~xJi%1# { \J^#2{d this.sURL = sURL; >=@-]X2%j this.nStartPos = nStart; 2`=jKt this.nEndPos = nEnd; YC6T0m nThreadID = id; 4(Lmjue]? fileAccessI = new FileAccessI(sName,nStartPos);//定位 si0}b~t } wps/{h, #UM,)bH D[$"nc/ public void run() CNNqS^ct { [> HKRVy while(nStartPos < nEndPos && !bStop) [mtp-4* { ob7'''i VX)8pV$ 65LtCQ} try{ *;A ;)' URL url = new URL(sURL); a{8a[z HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); "| '~y}v_ httpConnection.setRequestProperty("User-Agent","NetFox"); dseI~} String sProperty = "bytes="+nStartPos+"-"; ZLQmEF[> httpConnection.setRequestProperty("RANGE",sProperty); !#0)`4O Utility.log(sProperty); j<^!"_G]*? 5%,3)H{;t r^
r+h[V InputStream input = httpConnection.getInputStream(); _}R$h=YD //logResponseHead(httpConnection); Z
'5itN^ YSnh2 Bq J9T2 p\5 byte[] b = new byte[1024]; 7@c!4hmrU int nRead; Myc-lCE while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) P+CV4;Xz { rNN>tpZ} nStartPos += fileAccessI.write(b,0,nRead); 8Ths"zwn //if(nThreadID == 1) Y'/6T]a // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); \[G'cE } ifn=De3+ zhJeTctRz PD&e6;rj; Utility.log("Thread " + nThreadID + " is over!"); HoQb.Z bDownOver = true; YIe1AF} //nPos = fileAccessI.write (b,0,nRead); ZF7@ b/-me } k3Yu"GY^ catch(Exception e){e.printStackTrace ();} 8qe[x\,"8 } ?m)<kY } <'\Nv._2a u&~Xgq5[ J^+w]2`S //打印回应的头信息 F,_L}
public void logResponseHead(HttpURLConnection con) er3Mvw { 6))":<J for(int i=1;;i++) v`4w=!4 { 9^*RK6 String header=con.getHeaderFieldKey(i); %H\b5&
_y if(header!=null) dgVGP_~ //responseHeaders.put(header,httpConnection.getHeaderField(header)); DAw1S$dM Utility.log(header+" : "+con.getHeaderField(header)); BK!Yl\I< else &4%pPL\f break; {a[BhK'g } TuwP'g[ } 'n|U
6J;!p/C8E D`XXR}8V public void splitterStop() ;@;aeu { ^wy bStop = true; $#=d@Nw_ } ?+}Su'pv} 9a_P 9s3w Yc#Uu8f- } 9R=avfI ZA=J`->k h2Q'5G /* I"&cr>\ **FileAccess.java {\>4)TA *//文件访问(定位,写) -VohU-6 | package NetFox; YdD; Qx#O import java.io.*; Jt$YSp=!! &g?GF\Y uzp\V
39 public class FileAccessI implements Serializable{ L@Rgiq|v-| +s#%\:Y M //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 P(PBOB97 RandomAccessFile oSavedFile; t|@5,J long nPos; {t;o^pUF `n>/MY 21!X[)r public FileAccessI() throws IOException ..yV=idI { f`4=Bl&"{ this("",0); jI,[(Z> } %;&lVIU0 v7(7WfqP ;Tbo \Wp9 public FileAccessI(String sName,long nPos) throws IOException ]]p\1G { *k(FbZ oSavedFile = new RandomAccessFile(sName,"rw"); 7nPg2K& this.nPos = nPos;
bZ`#;D< oSavedFile.seek(nPos); u-~ec{oBu } DVd8Ix <
+c8`N'~ |k~AGc public synchronized int write(byte[] b,int nStart,int nLen) >FE8CH!W& { ")8l'^Mq2 int n = -1; |-JG _i try{ eX\v;~W* oSavedFile.write(b,nStart,nLen); w,P@@Q E n = nLen; gb,ZN^3<- } ltOS()[X catch(IOException e) g:uVl;> { J *LPv9) e.printStackTrace (); L\mF[Kd#+T } ?EUg B\ La6
9or r QzdHA return n; !v2/sq$G } `GE8?UO- [w}- )&c sd4eG } A^}# ql9n`?Q ~Jf(M^E /* /BgXY}JC. **SiteInfoBean.java 6EC',=)6R */ n]6'!Eo package NetFox; OK4r) ,LZA\XC v
RD/67 public class SiteInfoBean { 38sLyoG=i =b66H]h? XrUI[ryE private String sSiteURL; //Site's URL #j7&2L private String sFilePath; //Saved File's Path Zf>:h private String sFileName; //Saved File's Name r!b>! private int nSplitter; //Count of Splited Downloading File 8}yrsF# 'LoWp} f9 dQ;8,JzIw& public SiteInfoBean() Dt!KgI3 {//nSplitter的缺省值为5 $mK;{9Z
//default value of nSplitter is 5 z1b@JCWE this("","","",5); ~g{1lcqQP } 8$c) ]Bv 9O &]!ga .+(ED public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) h,y_^cf { =WUNBav sSiteURL= sURL; HG /fp<[ sFilePath = sPath; -pJ\_u/&%` sFileName = sName; 6`-<N ! this.nSplitter = nSpiltter; Yv=L'0K& :UT\L2 q= U
_pPI$ = } OfrzmL<K v,opyTwG| $<nD-4p public String getSSiteURL() O!>#q4&] { xVsI#`<a return sSiteURL; e
6wevK\ } @ddCVxd @D[+@N &@xm< A\S public void setSSiteURL(String value) ?Xpk"N7 { j#3IF *" sSiteURL = value; q-^{2.ftcx } !]?kvf-3e !'!\>x$ 1Ov oW Nx public String getSFilePath() \DlMOG { #-b}QhxH return sFilePath; [.Fm-$M- } s Y4wdG p%iZ6H>G tVf):}<h public void setSFilePath(String value) AaU!a { |L89yjhWBs sFilePath = value; 7$Wbf4 } .qf~t/o OXl0R{4 \R-'<kN.* public String getSFileName() ttB>PTg# { {~#PM>f return sFileName; pVzr]WFx } 9GT}_
^fb !,Cbb } C%ZPWOc_8 public void setSFileName(String value) e]dFNunFq0 { kaoiSL<[6 sFileName = value; B\aVE|~PB } oLq N 1`s^r+11: tnBCO%uG public int getNSplitter() rf`xY4I\ { 2qV oe}F return nSplitter; 2 p}I } Brd9"M|d 9@mvG^ CGb4C(%-7 public void setNSplitter(int nCount) A@:U|)+4 { WWOt>C~zV nSplitter = nCount; cf^ i!X0 } YRv96|c, }
M_%c9g@x O'@[f{ [}l 90 lP /* 4#:Eq=(W **Utility.java
}J-e:FUF# */ (c"!&&S^ = package NetFox; VfDa>zV3 @SaxM4 oIj-Y`92! public class Utility { xpu2RE <Ter\o5% yh|+Usa public Utility() C(z'oi:f { Ro `Xs.X m6}_kzFz S,avvY.U\ } lOe|]pQ., E`C!q
X> //线程睡眠 yOAC<<Tzus public static void sleep(int nSecond) KDV.ZSF7 { ufw[Ei$I: try{ Y%|dM/a` Thread.sleep(nSecond); T5I#7LN# } d%nX;w,
catch(Exception e) 4vvQ7e7 { G+k wG)K e.printStackTrace (); .j>MsQP#\C } 23,pVo } 3u+i ]|=`-)AP3 //日志 c9c3o{(6Y public static void log(String sMsg) XJy.xI>; { L
8;H_:~_' System.err.println(sMsg); a'n17d& } ~_F;>N~ T(]*jaB 0*oavY* public static void log(int sMsg) 02NVdpo[wU { >ZeARCf"f System.err.println(sMsg); TXf60{:f } Z5*(xony0 } N[fwd=$\# xirq$sEl L<B)BEE. /* }QQ 7jE **TestMethod.java `R7dn/ */ X?&{<
vz package NetFox; _6`GHx '=\>n(%Q utl-#Wwt/ public class TestMethod { #sg
dMrVQ "68X+! cu'( Hj public TestMethod() G)M! ,
Q { ///xx/weblogic60b2_win.exe o`7 Z<HF try{ :xbj&
l SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 5ug|crX //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); ;volBfv SiteFileFetch fileFetch = new SiteFileFetch(bean); }; M@JMu, fileFetch.start(); .jC5 y& } kt\,$.v8 catch(Exception e){e.printStackTrace ();} EA9.?F
jENC1T( g>w {{G } ".N{v1 jAv3qMQA HvKdV`bz public static void main(String[] args)
4~ L1~Gk { . &`YlK new TestMethod(); >}2
,2 } /lPnf7 } fR+{gazk
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