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/* A]<y:^2])C **SiteFileFetch.java `
w=>I */ Z"Zmo>cV4 package NetFox; 3Ko/{f import java.io.*; +Um( h-; import java.net.*; *e<[SZzYZ
//*fSF o#;b public class SiteFileFetch extends Thread { t,QyfN DD7h^-x ]}*R| 1 SiteInfoBean siteInfoBean = null; //文件信息Bean IW>T}@
| long[] nStartPos; //开始位置 _?<|{O long[] nEndPos; //结束位置 7zA'ri3w FileSplitterFetch[] fileSplitterFetch; //子线程对象 8R2QZXJb- long nFileLength; //文件长度 5BWH-2HsB boolean bFirst = true; //是否第一次取文件 >5_2_Y$" boolean bStop = false; //停止标志 "/)#O~ File tmpFile; //文件下载的临时信息 a<@1-j< DataOutputStream output; //输出到文件的输出流 ztnFhJ<a$ MPCBT!o4Z //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 2K<
8 public SiteFileFetch(SiteInfoBean bean) throws IOException }d&_q7L@@6 { VE#Wb7 siteInfoBean = bean; C^3 <={ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); O#b6mKPt;t tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); O|\J}rm' if(tmpFile.exists ()) zxMXXm; { ^2+yHw bFirst = false; ,">]`|? read_nPos();
7_%"BVb" } RzxNbeki[W else ;P;-}u { =V-A@_^!c nStartPos = new long[bean.getNSplitter()]; a,xycX:U nEndPos = new long[bean.getNSplitter()]; uH/J]zKR } Z('Z ,3?Q(=j S\4tzz @ !i{aMxUP } Z LB4m` 0Z~p%C<LW Z?}dq-Vh& public void run() 'w!Cn> { FQm`~rA~zt //获得文件长度 >go,K{cK6 //分割文件 <L`KzaA //实例FileSplitterFetch `2' #!- //启动FileSplitterFetch线程 `rgn<I" //等待子线程返回 RzBF~2 >i try{ _XG/Pp) if(bFirst) .>CPRVuVI { H!?c\7adX nFileLength = getFileSize(); ,.rs(5.z8/ if(nFileLength == -1) !HrKXy0{ { 'L
8n-TyL System.err.println("File Length is not known!"); }&/o'w2wY } qo p^;~ else if(nFileLength == -2) B$-R-S6 { D6%J\C13` System.err.println("File is not access!"); c0PIc^R(@ } |*:'TKzNS else TX$r`~ { JM=JH
51` for(int i=0;i<nStartPos.length;i++) [f)cL6AeF { \!>3SKs(e nStartPos = (long)(i*(nFileLength/nStartPos.length)); *#E
FsUw } u2[iM d for(int i=0;i<nEndPos.length-1;i++) K!:azP,bZ { ?6Jx@ Sh nEndPos = nStartPos[i+1]; NYE`Kin- } 8WtsKOno nEndPos[nEndPos.length-1] = nFileLength; %JXE5l+pJ } W=vG$ } 6`O.!|) TFH \K{DM mk1bcK9 //启动子线程 SNfr"2c'h~ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Px$/ _`H for(int i=0;i<nStartPos.length;i++) ?,p;O { +,2:g}5 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), plUZ"Tr siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), RMK"o? nStartPos,nEndPos,i); eb.O#Y Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 3x5JFM fileSplitterFetch.start(); [baiH|5> } t0o`-d( // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), =o
Xsb siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Du`JaJI // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Q o?O:
nEndPos = " + nFileLength); 6qRx0"qB // fileSplitterFetch[nPos.length-1].start(); `4(e # ,7e
NM" d`P7}*;` //等待子线程结束 {6"Ph(I1 //int count = 0; >ZPsjQuf" //是否结束while循环 )Gj8X}DM boolean breakWhile = false; PUF/#ck _&N2'hG=sn TcIcS]w% while(!bStop) =4[v3Qx { \n{qsf: write_nPos(); IOb*GTb Utility.sleep(500); :E_g"_ breakWhile = true; xgpi-l 9^,Lc1"M> 3^R&:|, for(int i=0;i<nStartPos.length;i++) x$IX5:E#e { :|_'fNd+! if(!fileSplitterFetch.bDownOver) &=#[(vl { *+-}P|S: breakWhile = false; X *&[u7No break; ~p1j`r; } ]%|GmtqZs, } ~KW,kyXBnD if(breakWhile) Qj,]N@7 break; 7[I}*3Q' 7N-w eX :,Pn3xl //count++;
f#?fxUH~ //if(count>4) h!&prYx // siteStop(); 94+KdHAo^M } wT `a3Ymm LNrX;{ Z j<u@j+V System.err.println("文件下载结束!"); 9/hrjItV } OlAs'TE^ catch(Exception e){e.printStackTrace ();} SF&BbjBE0 } *"D3E7AO gUxP>hB ? i( % //获得文件长度 >}!mQ pAO public long getFileSize() :X.b}^ Z( { Ko;{I?c int nFileLength = -1; 0}$Hi try{ b+@JY2dvj URL url = new URL(siteInfoBean.getSSiteURL()); 0|$v-`P$ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); odPL{XFj httpConnection.setRequestProperty("User-Agent","NetFox"); %K\?E98M zoOaVV&1 > ?6&c int responseCode=httpConnection.getResponseCode(); Fe]B&n if(responseCode>=400) x*?x=^I{ { Rn{iaM2Y< processErrorCode(responseCode); : y5<go8e return -2; //-2 represent access is error kBYNf = } [* @5\NWR} ;k7xMZs NXNY"r7~ String sHeader; ^zt-HDBR_ ;cPy1 >)spqu] for(int i=1;;i++) !OA]s%u { }&n<uUD H //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); BB~OqZIP //Utility.log(in.readLine()); "Jt.lL ]5 sHeader=httpConnection.getHeaderFieldKey(i); 4zJtOK?r" if(sHeader!=null) :|Ad:fEs { e
' 2F# if(sHeader.equals("Content-Length")) W6"v)Jc>_ { 3
|hHR nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); `0P$#5? break; #;%JT } kMtwiB|7j } x9;gT&@H else EGZb7:Y? break; O9EKRt } fcNL$U&-,i } .2>p3|F catch(IOException e){e.printStackTrace ();} QAvir%Y9Q catch(Exception e){e.printStackTrace ();} &jsVw)Ue 7PANtCFb& t%'Z<DmG+ Utility.log(nFileLength); gF[z fDm $:
]o]a SzUpWy& return nFileLength; oo=Qt(# } hjIT_{mk i?fOK_d \8<BLmf4U //保存下载信息(文件指针位置) Hm$=h>rY9[ private void write_nPos() =,Dqqf { @6mBqcE'? try{ d!:6[7X6 output = new DataOutputStream(new FileOutputStream(tmpFile)); xZ4~Oo@@_' output.writeInt(nStartPos.length); ADpmvW f? for(int i=0;i<nStartPos.length;i++) du)~kU>l { .G+Pe'4a // output.writeLong(nPos); M@?xa/E64 output.writeLong(fileSplitterFetch.nStartPos); p;W.lcO`0 output.writeLong(fileSplitterFetch.nEndPos); w:?oTuw } :,J}z~I,lB output.close(); X LL/4 ) } |!"2fI catch(IOException e){e.printStackTrace ();} L{(QpgHZ catch(Exception e){e.printStackTrace ();} #B:hPZM1 } O2BW6Wc |b*?
qf ^4,a 8` //读取保存的下载信息(文件指针位置) Sqo
:- private void read_nPos() tI7:5Cm { G3rj`Sg^c try{ hi0R.V& DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); L+CyQq int nCount = input.readInt(); rMU T_^ nStartPos = new long[nCount]; xfb]b2 nEndPos = new long[nCount]; L2, 1Kt7 for(int i=0;i<nStartPos.length;i++) z.Y$7bf) { GKoK7qH\J nStartPos = input.readLong(); Hd,p!_ nEndPos = input.readLong(); !zPa_`P } L+'Fs input.close(); xo&]RYG[< } ]79:yMD~ba catch(IOException e){e.printStackTrace ();} ox%9Ph catch(Exception e){e.printStackTrace ();} fH)YFn/ } D<Zp!J1o IdXZoY CMn{LQcC private void processErrorCode(int nErrorCode) RB+N
IoQQ| { hWKJ,r%9; System.err.println("Error Code : " + nErrorCode); nv0]05.4 } t`+'r}=d vP!{",> $ZNu+tn
Y //停止文件下载 J,zO2572u public void siteStop() Q" ,0F{' {
v76D3'8 bStop = true; e0J6Ae4V[ for(int i=0;i<nStartPos.length;i++) z,VD=Hnz fileSplitterFetch.splitterStop(); LrATSq@ Ma+$g1$ bks/`rIA } ed:@C? } Z7RiPSdxp //负责部分文件的抓取 '
4ER00 **FileSplitterFetch.java ET[kpL */ <0S,Q+& package NetFox; SF5@Vg i:Zm*+Gi hs?sGr import java.io.*; +e-G,%>9 import java.net.*; jiYmb8Q4D ZKXo-~=> fgBM_c&9T public class FileSplitterFetch extends Thread { 1&P< !w H'b i| ZceX/ String sURL; //File URL #'q<v"w long nStartPos; //File Snippet Start Position &[At`Nw71 long nEndPos; //File Snippet End Position 1?| flK int nThreadID; //Thread's ID 0
s70r boolean bDownOver = false; //Downing is over 2e|N@j
& boolean bStop = false; //Stop identical ^qC;Nh4F FileAccessI fileAccessI = null; //File Access interface Ton94:9bZ 3;8!rNN ZvUCI8 public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Y&
F=t/U2 { &`fhEN this.sURL = sURL; {&"L~>/o this.nStartPos = nStart; (I@rLvZr{ this.nEndPos = nEnd; eQVZO>)P1+ nThreadID = id; iC*F fileAccessI = new FileAccessI(sName,nStartPos);//定位 [xT:]Pw} } EZYBeqv 9
Rx
s o}<4*qlI public void run()
!xwG%{_ { E"L2&. while(nStartPos < nEndPos && !bStop) 1Jj Y! { 06Gt&_Q JKX_q&bUw cW{1
Pz^_ try{ iR\Hv'| URL url = new URL(sURL); f}L*uw HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 0jzbG]pc:E httpConnection.setRequestProperty("User-Agent","NetFox"); @o-B{EH8 String sProperty = "bytes="+nStartPos+"-"; l$YC/bP httpConnection.setRequestProperty("RANGE",sProperty); VL[kJi
Utility.log(sProperty); >/#KI~}'N _ib"b# _$p$") InputStream input = httpConnection.getInputStream(); 3 ( ]M{4j //logResponseHead(httpConnection); 7c;9$j OKHX)"j\\ ^::EikpF% byte[] b = new byte[1024]; P1 zdK0TM int nRead; ~l$3uN[g while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) IJJ%$%F/ { MgC:b-&5_ nStartPos += fileAccessI.write(b,0,nRead); T<I=%P) //if(nThreadID == 1) m] W5+ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); uK'&Dam } !gLkJ) DaH?@Q XK"-' Utility.log("Thread " + nThreadID + " is over!"); Uh'#izm[l bDownOver = true; Lgz$]Jbl8 //nPos = fileAccessI.write (b,0,nRead); *c)uGz'cD
} /1 RAAa catch(Exception e){e.printStackTrace ();} \V>?Do7 } +`sv91c } gt\MS;jMa :d8W+|1u cv(PP-'\ //打印回应的头信息 {,cCEXag% public void logResponseHead(HttpURLConnection con) k/03ZxC- { jt@SZI` for(int i=1;;i++) <F
)_!0C { 0A:n0[V:] String header=con.getHeaderFieldKey(i); fGv#s
X if(header!=null) zFQ&5@43 //responseHeaders.put(header,httpConnection.getHeaderField(header)); Q`#4W3-, Utility.log(header+" : "+con.getHeaderField(header)); !;Jmg else BI:k#jO! break; TM8=U-A } huudBc
A[ } 5`]UE7gT nr)c!8 p7ir*r/2 public void splitterStop() c>1RP5vx { ZvGgmLN bStop = true; UA~RK2k? } {"vkji> ]hud4i~ >|Q:g,I } NWfAxkz{/ ?k[p<Uo 3M0+"l(X /* \7z^!m **FileAccess.java
Ke-)vPc *//文件访问(定位,写) Wy]^Ub gW package NetFox; 4gSH(*} import java.io.*; b.O9ITR J4=_w m uW!xY public class FileAccessI implements Serializable{ $hR)i IkzTJ%> //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 #&8}<8V RandomAccessFile oSavedFile; 0lM{l? long nPos; }<jb vCeK NDO\B,7 %~NH0oFO public FileAccessI() throws IOException <P%}|@ { ( #Z` this("",0); Y`6rEA0 } qW_u %b?$@H-Re ?hYqcT[% public FileAccessI(String sName,long nPos) throws IOException pWE `x|J { WqrgRpM{ oSavedFile = new RandomAccessFile(sName,"rw"); Q6C-4ja this.nPos = nPos; ?y XAu0 oSavedFile.seek(nPos); Lh$dzHq } O)R(==P26P BsZ{|,oQnZ %m{U&
-(l@ public synchronized int write(byte[] b,int nStart,int nLen) 5wC* ?>/ { ]>i~6!@ int n = -1; jx_4B%kzq try{ jY!ZkQsVe oSavedFile.write(b,nStart,nLen); $mA5@O~C5\ n = nLen; IB9%QW"0 } nL]^$J$ catch(IOException e) P5QQpY{<I { ']ood! e.printStackTrace (); /"qcl7F } t>UkE9=3\ tGcya0RL ! o,5h|\ return n; ]r]k-GZ$ } S\NL+V?7h e yw'7 d6 _C"r } h7_)%U<J2 K_-d( *HM?YhR /* ,je`YEC **SiteInfoBean.java P}3}ek1Ax */ GgFi9Ffj package NetFox; 1D([@)^ ~H@+D}J? &[|VZ[ public class SiteInfoBean { mjnUs-`W| HO|-@yOF^ xcCl
(M]+ private String sSiteURL; //Site's URL |E/L.gdP7 private String sFilePath; //Saved File's Path 7_KhV private String sFileName; //Saved File's Name %NHYW\sKX private int nSplitter; //Count of Splited Downloading File N1--~e u~ F;xQ e5v`;(^M public SiteInfoBean() GtI6[ :1t {//nSplitter的缺省值为5
6DSH`-; //default value of nSplitter is 5 {6vEEU this("","","",5); |@VF.)_ } bNzqls$ }3/~x J>S3sP public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) *ftC_v@p5 { h!]"R<QQdu sSiteURL= sURL; X.|Ygx sFilePath = sPath; v1[_}N9f>H sFileName = sName; 0^ !Gib this.nSplitter = nSpiltter; {0jIY nZvU'k: J0<p4%Cf } f5dR 5G sroGER. ]= x
1`j public String getSSiteURL() q7]>i!A { R e:T9K'e return sSiteURL; ?KN:r E } !r&Bn6* r)l` ^o<[.
) public void setSSiteURL(String value) x(r+P9f\< { cz.3|Lby sSiteURL = value; 5h_5Z~ } 6nw&$I pVokgUrC Wpm9`K public String getSFilePath() H*!5e0~rR { N7.
@FK return sFilePath; X.J } /#q")4Mf |+ 7f2C Q)6va}2ai public void setSFilePath(String value) #Q6w+" { =Lw3
\5l sFilePath = value; 3XVk#)lw } E3\ZJjG ua& @GXvZ U}P,EP%p public String getSFileName() ~w.2-D { LcUlc)YH5 return sFileName; r\mPIr| } j 2}v} [yd6gH W8/(;K`/ public void setSFileName(String value) i-13~Dk { !UNNjBBP7 sFileName = value; ^8742. } ?V+wjw P>htQ V/H@vKN2 public int getNSplitter() STT2o= { XJFnih return nSplitter; E%*AXkJ'dZ } dq8+m(7k 6F5,3& /?3:X* public void setNSplitter(int nCount) NNX%Bq { %]jQ48^R nSplitter = nCount; -Cj_B\ } z> :U{!5k } 'O "kt T o>u!CL< IA4+ad'\E /* 9v?V **Utility.java X%J%A-k] */ %|?1B$s0 package NetFox; !GN Xt4D 1o#vhk/"+ zz3 r<?#5 public class Utility { [:pl-_.C DcU C, n0FYfqH public Utility() + U5U.f% { h]}`@M" 3:" &Z6t# GN%<"I. } SQIdJG^: 0^iJlR2 //线程睡眠 %gTVW!q public static void sleep(int nSecond) PN9^[X { z[biK|YL try{ yM17H\ = Thread.sleep(nSecond); ;&`:|Hf* } >nNl^ yqW catch(Exception e) SY8U"Qc;9 { R9E6uz.j e.printStackTrace (); `t9.xB#Z } Qg{WMlyOP } FG _, {9{J^@ @ //日志 $O]^Xm3{@ public static void log(String sMsg) &:#A+4& { $[w|oAwi System.err.println(sMsg);
3se$,QmN } H
oS|f0 mrReast 1w) fu public static void log(int sMsg) C$ hQN { nr<.YeJ System.err.println(sMsg); M/)B" q } R}.3|0 } 1O9$W?)Q ,#Ln/; Nc"NObe /* AA_@\:w^ **TestMethod.java "_oLe;?$c */ 'W+i[Ep5Q package NetFox; G)4SWu0<t m/" J
s \3:
L Nt public class TestMethod { 6.UKB<sV 1::LN(`< K
/8qB~J* public TestMethod() 6*V8k%H { ///xx/weblogic60b2_win.exe }2mI*"%)\u try{ GM77Z.Y SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); Q.>/*8R; //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); [{/$9k-aF? SiteFileFetch fileFetch = new SiteFileFetch(bean); ef,F[-2^o fileFetch.start(); Ki63Ox^O } ^K/G 5 catch(Exception e){e.printStackTrace ();} ofl'G] /$+ >Ban?3{ l)%mqW% } 'me:Zd LAos0bc)w\ .c|9..Cq= public static void main(String[] args) OU6^+Ta { 2\,e new TestMethod(); CY5w$E } oM2|]ew) } *n;>p_# 点击下载更多相关资料
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