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/*
?}#Iu-IA **SiteFileFetch.java sgRWjrc/ */ 3Hi8=* package NetFox; 6FY.kN\
import java.io.*; lIPz" import java.net.*; \\;y W~ [_:
GQ 8RQv public class SiteFileFetch extends Thread { $laUkD#vz ;vy<!@Y;8 J,\e@ SiteInfoBean siteInfoBean = null; //文件信息Bean M 0$E_* long[] nStartPos; //开始位置 je%D&ci$ long[] nEndPos; //结束位置 b@O{e QB FileSplitterFetch[] fileSplitterFetch; //子线程对象 H4$f+ long nFileLength; //文件长度 NryOdt tI boolean bFirst = true; //是否第一次取文件 jB`:(5%RO boolean bStop = false; //停止标志 +!ZfJZls File tmpFile; //文件下载的临时信息 / }*}r DataOutputStream output; //输出到文件的输出流 u:^sEk"Lk' <GF^VT|Ce //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) !t}yoN
n| public SiteFileFetch(SiteInfoBean bean) throws IOException Z\cD98B# { ]r'D siteInfoBean = bean; M3r;Pdj2r //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); VOIni<9y tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); eD7qc1*G if(tmpFile.exists ()) mtdy@=?1Y { r AE5.Q!u bFirst = false; |a%Wd read_nPos(); hzT)5'_ } F|@\IVEB] else Tgh?=]H { -hc8IS nStartPos = new long[bean.getNSplitter()]; v0?SN>fZ nEndPos = new long[bean.getNSplitter()]; vmh>|N4a7 } 3gnO)"$ &x;n^W;# >P]gjYN xsiJI1/68 } Z{gm4YV J4@-?xj=\q zQ#*O'-n public void run() I?^(j;QpS { .h\Py[h<^ //获得文件长度 |>Fz:b d //分割文件 V7.g, //实例FileSplitterFetch u:mndTpB6x //启动FileSplitterFetch线程 M93*"jA //等待子线程返回 Cc;8+Z=a?G try{ Sp*4Z`^je if(bFirst) gA%
A}) { .rS.
>d^n nFileLength = getFileSize(); >|yP`m if(nFileLength == -1) (.X)= { FBbaLqgVF{ System.err.println("File Length is not known!"); @_7rd } Hp>L}5 y[ else if(nFileLength == -2) `- (<Q;iO { WIuYSt)h System.err.println("File is not access!"); g[bu9i } :Zx|= else `oH4"9&]k3 { SN]g4}K- for(int i=0;i<nStartPos.length;i++) Ln t 1 { lRNm
&3:- nStartPos = (long)(i*(nFileLength/nStartPos.length)); iQS,@6 } oOC&w0 for(int i=0;i<nEndPos.length-1;i++) `(
w"{8laB { _ Yc"{d3S nEndPos = nStartPos[i+1]; 3zu6#3^ } 5-y*]:g( nEndPos[nEndPos.length-1] = nFileLength; ,II3b(l } LrT EF
j } /|<SD.: =,h'}(z_ 0{ ~2mgg h //启动子线程 L`X5\D'X fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; VBw5[ for(int i=0;i<nStartPos.length;i++) 841 y"@*BY { -
jCj_@n fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), e([>sAx!1 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), B\e*-:pq> nStartPos,nEndPos,i); l#%7BGwzY Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); }WaZ+Mdg\ fileSplitterFetch.start(); "qd|!:bE } 9x|`XAB // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), C#^y{q siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); jT}={[9b // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Y;%LwDC nEndPos = " + nFileLength); 8>Cf}TvErx // fileSplitterFetch[nPos.length-1].start(); \$*CXjh3G t$wbwP r-TrA$k //等待子线程结束 _U-`/r o //int count = 0; 9}m?E<6& //是否结束while循环 @!u{>!~0 boolean breakWhile = false; +L`}(yLJ)9 I:G8B5{J sZT~5c8 while(!bStop) ^D6TeH { Z"%. write_nPos(); euVDrJ^ Utility.sleep(500); 2[HPU M2> breakWhile = true; GK!@|Kk8q7 6<$.Z-, oBo*<6 for(int i=0;i<nStartPos.length;i++) x\(#
{ p:5NMo if(!fileSplitterFetch.bDownOver) q4&! mDU { A[ncwJ breakWhile = false; MP)Prl> break; kfZ`|w@q } u~ipB*Zf } aHmg!s}& if(breakWhile) $
P5K break; Pd\4hy yF?O+9R
A "a(4]) //count++; Z,e|L4& //if(count>4) *DC/O(
0 // siteStop(); ]& ckq } 8.n#@% T3@2e0u ) _:=\h5}8 System.err.println("文件下载结束!"); HbI{Xf[6LP } 6V%}2YE?X catch(Exception e){e.printStackTrace ();} vt2.
i$u } G<D8a2q d"06
gp \<*F#3U1 //获得文件长度 cWZITT{A public long getFileSize() tWTHyL { 'z
AvQm int nFileLength = -1; =eUKpYI
try{ GdI,&|/ URL url = new URL(siteInfoBean.getSSiteURL()); {?0'(D7. HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); t;6<k7h httpConnection.setRequestProperty("User-Agent","NetFox"); q+9->D(6 Q=Mv"~2>B `G1"&q,i int responseCode=httpConnection.getResponseCode(); ^tGAJ_b79 if(responseCode>=400) o>C,Db~L/ { L6PgWc;m processErrorCode(responseCode); oI/_WY[t return -2; //-2 represent access is error ][jwy-Uy; } 5\C(2naf
8sG?|u [0y,K{8t String sHeader; |ymW0gh7o$ r9WR1&T) '`2'<^yO for(int i=1;;i++) :_6o|9J\t { ,"is%O. //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); kC%H E //Utility.log(in.readLine()); wGNEb sHeader=httpConnection.getHeaderFieldKey(i); :rQDA=Ps if(sHeader!=null) eN.6l2- { XYuX+&XW/ if(sHeader.equals("Content-Length"))
*6` ^8Y\ { 1>rQ).eT nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); !DFTg4xb break; P"^Yx8 L# } <q!HY~"V } j0}wv~\ else R9R~$@~G break; mMwV5\( } syW[uXNLZ } x5uz$g catch(IOException e){e.printStackTrace ();} X^N6s"2 catch(Exception e){e.printStackTrace ();} J FnE{ ocWl]h]. @2h hB W Utility.log(nFileLength); >IrQhSF
7;q0'_G eLPtdP5k return nFileLength; IC'+{3.m8 } Ft11?D
B d9:I.SA)E dY&v(~&;] //保存下载信息(文件指针位置) #~nXAs]Q private void write_nPos() y/Y}C.IWp) { \Hrcf +` try{ hGY-d}npAJ output = new DataOutputStream(new FileOutputStream(tmpFile)); /)J]ItJlz output.writeInt(nStartPos.length); W7WHDL^ for(int i=0;i<nStartPos.length;i++) \99'#]\_/E { ]NTQF/ // output.writeLong(nPos); G<-KwGy,D output.writeLong(fileSplitterFetch.nStartPos); 4AJT)I. output.writeLong(fileSplitterFetch.nEndPos); %<nGm\ } 8iaMr278W output.close(); &?bsBqpN } ~/K&=xE catch(IOException e){e.printStackTrace ();} NzyEsZ]$ catch(Exception e){e.printStackTrace ();} ai$l7]7 } pP":,8Q{ ^g6v#]&WA aSIb0`(3 //读取保存的下载信息(文件指针位置) `oikSx$vB. private void read_nPos() =t-Ud^3 { !9
kNL try{ |OF3O,5z DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); #oTVfY# int nCount = input.readInt(); g]L8Jli nStartPos = new long[nCount]; ,H"}Rw nEndPos = new long[nCount]; 1q!k#Cliu for(int i=0;i<nStartPos.length;i++) 1$03:ve1 { J' P:SC1 nStartPos = input.readLong(); ^2$b8]q nEndPos = input.readLong(); YU-wE';H6 } TxK
v!-1 input.close(); \A\ } oCOv
6( catch(IOException e){e.printStackTrace ();} [>?|wQy >= catch(Exception e){e.printStackTrace ();} h SS9mQ } =<H ekiYM G`%rnu @JhkUGG]p private void processErrorCode(int nErrorCode) )J @[8 x` { J[?oV;O System.err.println("Error Code : " + nErrorCode); jRC{8^98 } \Qah*1 oQ]FyV RyX11XU //停止文件下载 *(yw6(9% public void siteStop() c{1)-&W { A}9^,C$# bStop = true; 3l~7 for(int i=0;i<nStartPos.length;i++) 1YMi4. fileSplitterFetch.splitterStop(); =p[Sd*d %IVM1 Xk%eU>d } b*h:e.q } o'$- //负责部分文件的抓取 .jP|b~ **FileSplitterFetch.java P??P"^hU */ Vbp@n package NetFox; .$cX:"_Mk n%36a(]
t <(Ar[Rp import java.io.*; 2
oL$I(83 import java.net.*; C<a&]dN/ &?QKWxN IxWi>8
public class FileSplitterFetch extends Thread { Gq1C"s$4' <ndY6n3 J)Yz@0#T(; String sURL; //File URL uaP5(hUI long nStartPos; //File Snippet Start Position nX7F<k4G2 long nEndPos; //File Snippet End Position -2}ons( int nThreadID; //Thread's ID y{(Dv} boolean bDownOver = false; //Downing is over j07A>G-= boolean bStop = false; //Stop identical Cd^1E]O0{ FileAccessI fileAccessI = null; //File Access interface !U4YA1>> g/$RuT2U <bW~!lv public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException \bF<f02P { R$u1\r1I this.sURL = sURL; F7C+uGTs this.nStartPos = nStart; 4Hf'/%kW this.nEndPos = nEnd; XLiwE$:t% nThreadID = id; ~5|R`% fileAccessI = new FileAccessI(sName,nStartPos);//定位 fGeie m } s~(`~Y4 )Az0.} b(@GKH"W public void run() ^"lEa-g& { Xl<*Fn? while(nStartPos < nEndPos && !bStop) GBS+ 4xL| { 7R5ebMW
V *\:sHVyG( a6h+?Q7uF try{ `j'1V1 URL url = new URL(sURL); |AExaO"jk HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); k fY; httpConnection.setRequestProperty("User-Agent","NetFox"); Xajt][ String sProperty = "bytes="+nStartPos+"-"; |ul{d| httpConnection.setRequestProperty("RANGE",sProperty); % mPv1$FH Utility.log(sProperty); 'e<8j VPO~veQ PQ_A^ 95 InputStream input = httpConnection.getInputStream(); AwuhFPG //logResponseHead(httpConnection); w#BT/6W&G ODRy 2H8\P+ byte[] b = new byte[1024]; -0`n(`2 int nRead; er
BerbEEH while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) Yevd h< { 8.wtv5eZ nStartPos += fileAccessI.write(b,0,nRead); 4!ZT_q //if(nThreadID == 1) >@G"*le*) // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); y~OP9Tg } mIrN~)C4\ FnOahLS >U\P^yU Utility.log("Thread " + nThreadID + " is over!"); 1\lZ&KX$i bDownOver = true; <ir]bQT //nPos = fileAccessI.write (b,0,nRead); By[M|4a } 5(1c?biP& catch(Exception e){e.printStackTrace ();} :>ca).cjac } ^u90N>Dvq } q3v5gz^t ntPX?/ N2j^fZd_ //打印回应的头信息 WCqa[=v)t public void logResponseHead(HttpURLConnection con) _ A{F2M { !%(kMN for(int i=1;;i++) W%&s$b( { ?%ltoezf String header=con.getHeaderFieldKey(i); -+2A@kmEJ if(header!=null) 4%<wxrod //responseHeaders.put(header,httpConnection.getHeaderField(header)); G[`2Nd< Utility.log(header+" : "+con.getHeaderField(header)); PD^ 6Ywn>s else /={N^8^=x break; u^'X>n)oL# } +o,f:Ih } icVB?M,m ;U a48pSv q!><:"#[G public void splitterStop() :YX5%6 { [\fwnS_1 bStop = true; e `JWY9% } 2*gB ~Jn4 LV$Ko_9eA 'vq0Tw5 } x{G 'IEf f4 +P2j XXwo(trs~= /* g&.OJ **FileAccess.java NTCFmdbs 6 *//文件访问(定位,写) ZcHIk{| package NetFox; [T[]U import java.io.*; 5V/]7>b1 ,|#biT-<T Wi\k&V.mE public class FileAccessI implements Serializable{ $Dv5TUKw 9`H4"H>yG //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 tblduiN RandomAccessFile oSavedFile; #
eFdu long nPos; f\RTO63|O _T805<aUW\ %'X7T^uE public FileAccessI() throws IOException k7sD"xR3 { dxS5-aWy9w this("",0); Cd6th
F) } 33~8@]b z'O+B} k1P'Q&Na public FileAccessI(String sName,long nPos) throws IOException 5vS[{;<& { tU!Yg"4Q oSavedFile = new RandomAccessFile(sName,"rw"); fb[lL7 this.nPos = nPos; Z rgv* oSavedFile.seek(nPos); UbIUc}ge } =jxy4`oF "|,KXv') ~GJ;;v1b2 public synchronized int write(byte[] b,int nStart,int nLen) /Q89 y[ { QTN24 q4 int n = -1; #_IuB) qy try{ {+Wknm% oSavedFile.write(b,nStart,nLen); oxI?7dy5 n = nLen; 7GErh, } Q$k#q<+0 catch(IOException e) B
o%Sl { SY@;u<Pd e.printStackTrace (); jlqSw4_ } MIiBNNURX 'X4)2iFV Oi@|4mo return n; 7@k3-?q } G-:7,9 7>0/$i#'Vl x]R0zol } ]!jfrj #3RElI (WY9EJ<s, /* v:w^$]4 **SiteInfoBean.java NMC0y|G */ V_ntS&2o package NetFox; =@hCc Nm-E4N#'i 0;OZ|;Z public class SiteInfoBean { ~Dw%
d; n\BV*AH */@I$* private String sSiteURL; //Site's URL XJwgh y?( private String sFilePath; //Saved File's Path 4L97UhLL private String sFileName; //Saved File's Name F~OQ'59!Pf private int nSplitter; //Count of Splited Downloading File @`^Z5n.4 *mYGs )| -Edi"B4K public SiteInfoBean() F|oyrG {//nSplitter的缺省值为5 ,K30.E //default value of nSplitter is 5 OJM2t`}_t this("","","",5); 9q[[
,R
} B|M@o^Tf 0~DsA Ua [T/S/@IT public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) $
)2zz>4 { SD@ 0X[ sSiteURL= sURL; ?=-/5A4K sFilePath = sPath; b+f
' sFileName = sName; W?ghG this.nSplitter = nSpiltter; MhD=\Lpj\ a^[s[j#^,
j>.1RG } }6{00er ~xws5n}F 1L?W+zMO public String getSSiteURL() P"@^BQ4 { K_.|FEV return sSiteURL; N_+D#Z.g } WZTv \-[ >bsg `@u9 fx. public void setSSiteURL(String value) =n@\m< { i 2[8^o`_ sSiteURL = value; x~D8XN{ } 2jkma :$' R4DfqX zQu9LN public String getSFilePath() txX>zR*)
{ ?UeV5<TewS return sFilePath; aJ1{9 5ea } Kf,AnKkn' A
;|P\V OekE]`~w public void setSFilePath(String value) @2_E9{ T { y Tk1 sFilePath = value; :TV`uUE } T+%P+ ~9;udBfwF ) <w`:wD public String getSFileName() #nZPnc: { ^L.'At return sFileName; $ma@z0%8} } p^ OHLT 3m$Qd#| ]-;JHB5A_: public void setSFileName(String value) @,W5K$Ka= { t/3qD7L sFileName = value; _[wG-W/9R } ^B7Ls{ l%2 gM7WMY >m%7dU public int getNSplitter() lB#7j { ^E+fmY2a return nSplitter; Np$ue
}yr } {qCFd E!L_"GW }-9 c1&m public void setNSplitter(int nCount) O+[s4] { ~K(mt0T) nSplitter = nCount; )YwLj&e4tf } .%M80X{5~ } Re*~C: WQBV~.<Yv 2dbn~j0 /* q:vGG K^ **Utility.java |nqN95'u+] */ =gZA9@]W2 package NetFox; _({wJ$aYC 7>AMzNj u?'J1\z public class Utility { j}fSz)`i kD)]\ l?L s=J* public Utility() J?hs\nA { gebL6oc% ni<\AF]` :H:+XIgoR } }2Y`Lr 3|EAOoWnK //线程睡眠 4C*0MV public static void sleep(int nSecond) 2NB$(4/ { z2#k/3%o= try{ 53^3..E| Thread.sleep(nSecond); I\IDt~ } >Qg-dJt[ catch(Exception e) mSO7 r F { 1hc`s+N e.printStackTrace (); OXB 5W#$ } E[BM0.#bZ } oE0~F|(\1 S5YEz
XG //日志 7=&+0@R#/d public static void log(String sMsg) E*s _Y { =T)y(]
;M$ System.err.println(sMsg); ]]y,FQ,r } 9`KFJx6D $-s8tc( }U%T6~_wR public static void log(int sMsg) O:imX>|u { ]!s@FKC{; System.err.println(sMsg); /fU-0a8 } RS@G.| } aadw#90 uh>"TeOi [<d_#(]h' /* Y3-f68*( **TestMethod.java X0]$Ovq( l */ }VHvC" package NetFox; KUUZN bkrl>Im<n (CAkzgTfc public class TestMethod { /-(OJN5F^ C 7YS>?^] vJsg6oH public TestMethod() H. o3d/8: { ///xx/weblogic60b2_win.exe IIF <Zkpb try{ ='-/JH~ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); -<e_^ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); Jid_&\ SiteFileFetch fileFetch = new SiteFileFetch(bean); +"|TPKas fileFetch.start(); "{c@}~ } &!FI!T
-WH catch(Exception e){e.printStackTrace ();} Gh<#wa['} fwa*|y; @4Q/J$ } GgE
38~A4 =)x+f/c] :'[ha$ public static void main(String[] args) ?u0qYep: { ]O0u.=1k new TestMethod(); Cm0K-~
U } 6y"T;.FAo } o
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