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/* L ?KEe>;r **SiteFileFetch.java 3)0*hq&83 */ vn}Vb+@R package NetFox; ^@X
=v`C import java.io.*; JpS:}yyJ>N import java.net.*; Pn 7oQA\ `5 e#9@/e NqqLRgMOR' public class SiteFileFetch extends Thread { _rjCwo\ |k
4+I F>*w)6 4~ SiteInfoBean siteInfoBean = null; //文件信息Bean <\zb*e&vr long[] nStartPos; //开始位置 , is
.{y long[] nEndPos; //结束位置 z
eIBB FileSplitterFetch[] fileSplitterFetch; //子线程对象 UQW;!8J#R( long nFileLength; //文件长度 Y,E:? boolean bFirst = true; //是否第一次取文件 AS;{O>}54 boolean bStop = false; //停止标志 k )){1O File tmpFile; //文件下载的临时信息 B u4N~0 DataOutputStream output; //输出到文件的输出流 *QLl
jGe 0HxF#SlKM //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) -JwH^*Ad public SiteFileFetch(SiteInfoBean bean) throws IOException sOJ"~p { -QS_bQG% siteInfoBean = bean; 2~]c`/M3 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); e`}|*^- tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); v/yk T9@; if(tmpFile.exists ()) /.WD'*H { ;oR-\;]/. bFirst = false; =:a3cr~ read_nPos(); pM
VeUK? } ;y k@`< else TR)'I { 1YnDho;~ nStartPos = new long[bean.getNSplitter()]; C5sV-UMR nEndPos = new long[bean.getNSplitter()]; 2! wz#EC } 3U:0 ,-j" [BV{=;iD 8%nTDSp&t g>f(5 } 3*arW|Xm aUA+% T
86}^=-5 public void run() G0*$&G0nb { ,sLV6DM //获得文件长度 5gJQr%pS //分割文件 SH}O?d\Q: //实例FileSplitterFetch b$gDFNa //启动FileSplitterFetch线程 S%%>&^5 //等待子线程返回 CB|z{(&N try{ j@9nX4Z if(bFirst) l_f"}l { {I2j Lc nFileLength = getFileSize(); kc"U)> if(nFileLength == -1) ![Jxh,f { *2@q=R-1 System.err.println("File Length is not known!"); <,cD EN7 } 8@$QN4^u^ else if(nFileLength == -2) $rjv4e}7 { cIgFSwQ4 System.err.println("File is not access!"); jJ?3z,h } J-,T^Wv else bq
~'jg^# { 45-pJf8F for(int i=0;i<nStartPos.length;i++) /-4%ug tD$ { O>k. sO
< nStartPos = (long)(i*(nFileLength/nStartPos.length)); DTr0u}m } i,bFe&7J for(int i=0;i<nEndPos.length-1;i++) 9CL&tpqv
f { ?NHh=H\7u nEndPos = nStartPos[i+1]; '-v~HwC+/T } #4"\\ nEndPos[nEndPos.length-1] = nFileLength; oEi+S)_ } 7z+NR&'M$ } a>Q7Qn x3M`l| i.byHz?/ //启动子线程 ^AEg?[q fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; /Hd\VI for(int i=0;i<nStartPos.length;i++) O~xc>
w { cxmr|-^ fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 4`*jF'N[ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), lv8tS - nStartPos,nEndPos,i); bo@1c0 Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); (nV/-#* fileSplitterFetch.start(); q+m&V#FT% } -i;#4@^ t
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 7v\OS- siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); khEHMvVH // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", h<uRlTk nEndPos = " + nFileLength); n
~
=]/ // fileSplitterFetch[nPos.length-1].start(); n$~RgCf 12rr:(#%s @w|~:>/g //等待子线程结束 w\\ //int count = 0; 8taaBM`: //是否结束while循环 OY@/18D<> boolean breakWhile = false; u37+B ;xj^*b ?EtK/6dJZt while(!bStop) 4lz9z>J.V { duwZe+ write_nPos(); $%!]tNGS Utility.sleep(500); 61wGIN2, breakWhile = true; u/,m2N9cL <GR]A|P ZB%7Sr0 for(int i=0;i<nStartPos.length;i++) <
Gu
s9^_ { \9 ^wM>U if(!fileSplitterFetch.bDownOver) UHxXa*HyI { GadD*psD2 breakWhile = false; `[`eg<xj break; b9"Q.*c<Z^ } jI y'mGaG } Q4Cw{2r if(breakWhile) G2e m>W_n break; Ejn19{ *VL-b8'A< Qy9#(596 //count++; = [:ruE //if(count>4) t/nu/yz5E // siteStop(); iXXgPapz } PY) 74sa 9v/1>rziE ON!1lS System.err.println("文件下载结束!"); eLl;M4d } RX#:27: catch(Exception e){e.printStackTrace ();} 3ne=7Mj } (Kx3:gs
5)mn "|&SC0* //获得文件长度 5 kQC public long getFileSize() sx|=*j,_ { ZfIQ Fh> int nFileLength = -1; g9
g
&] try{ HQ4o^ WC URL url = new URL(siteInfoBean.getSSiteURL()); Wny{qj)= HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); edbzg#wy httpConnection.setRequestProperty("User-Agent","NetFox"); iao_w'tJ Y2Y/laD Q?Q!D+~mND int responseCode=httpConnection.getResponseCode(); DQwbr\xy\ if(responseCode>=400) Xo$(zGb { ^F_c' processErrorCode(responseCode); 7eZ,;
x return -2; //-2 represent access is error +jQW 6k# } ~|+ X(N!y"z Pq !\6s@ String sHeader; ALPZc: k`xPf\^tf BK6oW3wD/ for(int i=1;;i++) *\-6p0~A { joYj`K //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 7)<&,BWc //Utility.log(in.readLine());
NouT~K`' sHeader=httpConnection.getHeaderFieldKey(i); Sh=z if(sHeader!=null) n{=vP`V_ { ~#OnA1) if(sHeader.equals("Content-Length")) <Y<%=` { ".~,(* nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); F d *p3a break; C+jlIT+ } {ge^&l } O &;Cca else Un@d Wf6' break; A"d=,?yE } yP6^&'I+ } 7'CdDB6&. catch(IOException e){e.printStackTrace ();} E%2]c?N5 catch(Exception e){e.printStackTrace ();} V+-%$-w> FAo\`x wNq#vn Utility.log(nFileLength); g2BE-0, R RQ!kVM@ =J<3B
H^m return nFileLength;
c7,p5[ } Qne@Vf kA
Jf9a<[CcV ={B%qq //保存下载信息(文件指针位置) 4Zo.c*
BZ private void write_nPos() <D%.'=%pZ { 6 -N 442 try{ (gQP_Oa( output = new DataOutputStream(new FileOutputStream(tmpFile)); 4*P#3 B'@V output.writeInt(nStartPos.length); 2V:`': for(int i=0;i<nStartPos.length;i++) \0).
ODA( { fl9`Mgu // output.writeLong(nPos); 3fM8W>
*7 output.writeLong(fileSplitterFetch.nStartPos); Iw~R@, output.writeLong(fileSplitterFetch.nEndPos); C[6}
8J| } :Ugf3%sQ output.close(); kZ>_m&g } ))66_bech catch(IOException e){e.printStackTrace ();}
kc-=5l catch(Exception e){e.printStackTrace ();} ,K
8R%B } h'jc4mu0 "m4._4U <Z5-?wgf9 //读取保存的下载信息(文件指针位置) j4k\5~yzS private void read_nPos() gF#HNv { Py y!B try{ 3K!(/,` DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); S6Y2(qdP int nCount = input.readInt(); T\?$7$/V nStartPos = new long[nCount]; .o8Sy2PaV nEndPos = new long[nCount]; -n FKP&P for(int i=0;i<nStartPos.length;i++) ]l>LU2 sx { ^m~&2l\N= nStartPos = input.readLong(); r2yJ{j&s nEndPos = input.readLong(); ti'B}bH>' } 70Jx[3vr input.close(); jVi>9[rz } oq${}n < catch(IOException e){e.printStackTrace ();} 3>M%?d catch(Exception e){e.printStackTrace ();} B\S}*IE } B>.x@(}V~ & OYo x<5ARK6\= private void processErrorCode(int nErrorCode) %|j`z?i| { y^Uh<L0M System.err.println("Error Code : " + nErrorCode); Kv0V`}<Yc } lg"aB 5.1z9[z <yl%q*gls //停止文件下载 z_93j3# public void siteStop() O,6Wdw3+-3 { ~=va<%{
U bStop = true; ;NU-\<Q{ for(int i=0;i<nStartPos.length;i++) .V4- fileSplitterFetch.splitterStop(); (Zg']) 50_[n$tqE plL|Ubn }
J-#V_TzJ? } NNt
n //负责部分文件的抓取 i/j53towe **FileSplitterFetch.java CRBj> */ 0vETg'r package NetFox; vjjVZ FFa =/XB" TZ *>MySiF import java.io.*; }@eIO| import java.net.*; :*f 2Bn @}=(4% hw$!LTB2 public class FileSplitterFetch extends Thread { d~1uK-L]* rk6K0TQ8 nr2 Q[9~ String sURL; //File URL _Jy7` 4B. long nStartPos; //File Snippet Start Position F~q(@.b long nEndPos; //File Snippet End Position 1U%
/~ int nThreadID; //Thread's ID Kv<f<>|L boolean bDownOver = false; //Downing is over ^M{,{bG boolean bStop = false; //Stop identical j$K*R." FileAccessI fileAccessI = null; //File Access interface AbxhNNK z',Fa4@z DQT'OZ:w public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException [\AOr`7 { 0j_kK this.sURL = sURL; c/Xg ARCO this.nStartPos = nStart; rtS' 90` this.nEndPos = nEnd; l+[:Cni nThreadID = id; R&9FdM3K`: fileAccessI = new FileAccessI(sName,nStartPos);//定位 'IG@JL' } _0(%^5Y 1W\E`)Z}] m>%b4M public void run() !$A/.;0$ { DY -5(6X while(nStartPos < nEndPos && !bStop) 3/>7b( { 1rJ2}d\y MjU|XQS: t%;w<1E try{ 2 /FQ;<L URL url = new URL(sURL); (J[Xryub HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); lDTHK2f httpConnection.setRequestProperty("User-Agent","NetFox"); -QroT`gy String sProperty = "bytes="+nStartPos+"-"; 3V<@Vkf5 httpConnection.setRequestProperty("RANGE",sProperty); .4p3~r?=S Utility.log(sProperty); AH|gI2 @^A5{qQ\ #obRr#8 InputStream input = httpConnection.getInputStream(); '`3#FCg //logResponseHead(httpConnection); @@)2 12 1>"-!ADm !bP%\)5 byte[] b = new byte[1024]; PD)"od int nRead; ,;_+o] while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) )P$|9<_q7x { tO&ffZP8$ nStartPos += fileAccessI.write(b,0,nRead); v8)"skVnFG //if(nThreadID == 1) CuWJai:nQ; // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); fC[za,PXaE } EHk\Q\ HR}O:2' DsejZ& Utility.log("Thread " + nThreadID + " is over!"); H+4j.eVzZU bDownOver = true; P.}d@qD{) //nPos = fileAccessI.write (b,0,nRead); J#zr50@@ } 3''Sx8p catch(Exception e){e.printStackTrace ();} ]1|P|Jp } h q)1YO } >#w;67he2 ZEAUoC1E1 JVYH b 60Z //打印回应的头信息 ;f=m+QXU public void logResponseHead(HttpURLConnection con) <eoie6@3 { |^6{3a for(int i=1;;i++) EU$.{C_O( { Ks-$:~?5": String header=con.getHeaderFieldKey(i); j,.\QwpU if(header!=null) %up?70 //responseHeaders.put(header,httpConnection.getHeaderField(header)); ;f[lq^eV Utility.log(header+" : "+con.getHeaderField(header)); E5w;75, else }d<R
5 break; 7uF|Z( } 7;s#QqG`I } Y()"2CCV f8Iddm# Nc;O)K!FH public void splitterStop() 8R,<S-+v { p49]{2GXb bStop = true; cJ;Nh>ey } k, HC"?K X2z<cJG|d@ U ? +_\ } x4oWZEd =]Vz=< |A%9c.DG. /*
lN,?N{6s **FileAccess.java j]Jgz< *//文件访问(定位,写) BAf$tyh package NetFox; 8]ZzO(=@{ import java.io.*; .T|
}rB<c (N7uaZ?Z V!W.P public class FileAccessI implements Serializable{ qCV<-o |'Fe?~P` //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 9}(w*>_L RandomAccessFile oSavedFile; 558P"w0"X long nPos; 9a}9cMJ^" M|WBJ'#x0 Y%pab/Y public FileAccessI() throws IOException CKYg!\g(: { CM;b_E)9)f this("",0); =p+y$ } CSO'``16 &{}Mds jJy:/!i public FileAccessI(String sName,long nPos) throws IOException EB~]6.1 { ?sf<cFF oSavedFile = new RandomAccessFile(sName,"rw"); 1E+12{~m"i this.nPos = nPos; g!'R}y oSavedFile.seek(nPos); > |$]=e,Z } l<6u@,%s
2 !s&|lI %rzPh<>e public synchronized int write(byte[] b,int nStart,int nLen) T @ c~ql { 0j.K?]f)h int n = -1; E}@C4pS try{ "
kDiK`i oSavedFile.write(b,nStart,nLen); J2YQdCL n = nLen; z3oi( } 3k Ci5C catch(IOException e) (l{vlFWd { '![oLy e.printStackTrace (); *g/klK } =[6^NR( a`xq
h2P !+l'<*8V return n; =Zd(<&B K }
is'V%q qt/K$' "-J5!y*,Y } 4&/CES JU 9GJ" 22gh!F%) /* j[>cv;h
; **SiteInfoBean.java * {g3ia */ 3H,E8>Vd package NetFox; jvzioFCt #36QO
g^ AQBF public class SiteInfoBean { N[%u>! T$4{fhV
\ zWHq4@K private String sSiteURL; //Site's URL x9_mlZ private String sFilePath; //Saved File's Path g@.$P>Bh private String sFileName; //Saved File's Name y.r N( private int nSplitter; //Count of Splited Downloading File (eHyas %X Vwkvu&4 /:{%X(8 public SiteInfoBean() Cf{F"o {//nSplitter的缺省值为5 2]>O ZhS //default value of nSplitter is 5 zM'eqo>!c> this("","","",5); ^Q6J$"Tj } N]<(cG&p vQAFg G FFHq':v public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) :^;c(>u{ { oMh$:jR $ sSiteURL= sURL; 0RUk^ sFilePath = sPath; $|K
d<wv sFileName = sName; aeqz~z2~8s this.nSplitter = nSpiltter; VYvfx dP5x]'"x 3EoCEPb# } NvR{S /Z (O.%Xbx3 &#r+a' public String getSSiteURL() 5> k:PKHL { @u~S!(7.Wi return sSiteURL; baxZ>KNi } )*') I>c,Bo7 k+<945kC public void setSSiteURL(String value) m'4f'tbN { rzjVUPdnh sSiteURL = value; c_lHj#A(l } )>volP lj4Fg*/Yn Zt=|q$" public String getSFilePath() Q&9yrx. { P 7x;G5'. return sFilePath; 3h:j.8Z } =ily=j"hK 20:F$d Lvk}% ,S8t public void setSFilePath(String value) *$f=`sj { D3pz69W sFilePath = value; kfy!T rf } 6Q.S QY\k3hiqn X{9^$/XsJ public String getSFileName() q
z)2a2C { a#oROb-*~ return sFileName;
Fr%# } ! 'zd(kv< T$Z9F^w TpjiKM public void setSFileName(String value) m]p{]6h { Q*ITs!~Z sFileName = value; \pmS*Dt } K$E3RB_F b#j:)PA0C 2HbnE& public int getNSplitter() eUPa5{P { 9&mSF0q return nSplitter; bO~y=Pa\ } B(Sy.n WT
*"V<Z R@e'=z[%1 public void setNSplitter(int nCount) AGBV7Kk { exRw, Nk4 nSplitter = nCount; 7DB_Z/uU } ,_z79tC{s } {U4!sJSl1 /dnwN7Gf &kb`)F3nU /* FD=%
4#| **Utility.java c*USA
eP */ n<?U6~F&~ package NetFox; qxL\G &~ 7qKz_O ~!S3J2kG{ public class Utility { )^(*B6;z5 Zxk~X}K\P ffKgVQux public Utility() s%[F,hQRk { | /.J{=E0K 5Qgu:)} 2"/MM2s } l#)X/(?; {UiSa'TR1b //线程睡眠 0G%9
@^B public static void sleep(int nSecond) #w$Y1bjn { {Jr1K, try{ &L|oqXE0L Thread.sleep(nSecond); q'3{M]Tk } -V$|t< catch(Exception e) jNZ.Fb { )u?f| D e.printStackTrace (); 8R~<$xz } =lacfPS } U,GSWMI/K VRo&1: //日志
\;;M")$ public static void log(String sMsg) T,38Pu@r { -t-f&`S|| System.err.println(sMsg); 6 2xOh\( } `sjY#Ua< 5Cf!NNV 4jT6h9% public static void log(int sMsg) /2^L;# { "2%z;!U1 System.err.println(sMsg); aq,1'~8XR } xC76jE4 } 0TN28:hcD so))J`ca) u=`H n-( /* .1QGNW **TestMethod.java +LHU}'| */ *CN *G" package NetFox; d3%qYL_+a Y,L`WeQY. 4P{|H public class TestMethod { c~|(j \FI !Vpi1N\ )k<cd.MX public TestMethod() U1`5P!ov { ///xx/weblogic60b2_win.exe J"gMm@#C4 try{ ~E}kwF SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); zCs34=3D[ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); HcRw9,I' SiteFileFetch fileFetch = new SiteFileFetch(bean); dCx63rF`G fileFetch.start(); uYW4$6S3 } &1\/B catch(Exception e){e.printStackTrace ();} ,GOIg|51 rFzNdiY W]4Z4& |