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/* mOYXd,xd **SiteFileFetch.java -ktYS(8& */ Gs}lw'pK package NetFox; jg3['hTJT import java.io.*; a\I`:RO=<Z import java.net.*; y"nCT3 Mz6|#P}.s Z?w=- public class SiteFileFetch extends Thread { UX'tdB
!A @gJPMgF$F aII:Pzh]B SiteInfoBean siteInfoBean = null; //文件信息Bean @;d7#!:cE long[] nStartPos; //开始位置 NMP*q
@ long[] nEndPos; //结束位置 /bqJ6$ FileSplitterFetch[] fileSplitterFetch; //子线程对象 @(rLn long nFileLength; //文件长度 rX&?Xi1JeV boolean bFirst = true; //是否第一次取文件 `P9%[8`C 9 boolean bStop = false; //停止标志 sY'dN_F File tmpFile; //文件下载的临时信息 ;WL0 DataOutputStream output; //输出到文件的输出流 5d82M s f<3r;F7 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) {|@N~c+ public SiteFileFetch(SiteInfoBean bean) throws IOException Wy$Q!R=i { 5{8,+
Z siteInfoBean = bean; 5cl%>U //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); d _koF-7 tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); f P1fm if(tmpFile.exists ()) mDU-;3OqF { qk(u5Z bFirst = false; * (<3 oIRS read_nPos(); dtq]_HvTJ } yAVt[+0 else vy F(k3W { UIw6~a3E nStartPos = new long[bean.getNSplitter()]; eYRm:KC nEndPos = new long[bean.getNSplitter()]; YA^g[, } ,[Z;"wE knZ<V%/e 1uhSP!b i'vjvc~ } q]t^6m&- !GVxQll[f '
9 public void run() & |o V\L { -3:x(^|:K //获得文件长度 YcBAW4B` //分割文件 fBt7#Tc=U //实例FileSplitterFetch j-etEWOTr //启动FileSplitterFetch线程 GEi^3UD //等待子线程返回 &rxR"^x\ try{ Rd*/J~TK if(bFirst) 3836Di:{ { Cqk6I gw nFileLength = getFileSize(); LIHf]+ if(nFileLength == -1) o>Z+=&BZ@a { $(%t^8{a~G System.err.println("File Length is not known!"); P(Hh%9'( } ZCVN+::Y else if(nFileLength == -2) bpeWK& { _Msaub!N System.err.println("File is not access!"); \Tj(] } bga2{<VF else :dzamHbX9 { -n~VMLd?@ for(int i=0;i<nStartPos.length;i++) 1{S"
axSL { K&noA nStartPos = (long)(i*(nFileLength/nStartPos.length)); b}r3x&) } ~UJ_Rr54 for(int i=0;i<nEndPos.length-1;i++) KcjP39@I { I*K~GXWs# nEndPos = nStartPos[i+1]; DavG=kvd } th*E"@ nEndPos[nEndPos.length-1] = nFileLength; JEes'H}Y } z '%Vy } ?5 d3k% 5 ERycC y C zvi': //启动子线程 WChJ
<[]W fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; D*j\gI for(int i=0;i<nStartPos.length;i++) QRv2%^L { r
yO\$m fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 6y9#am? siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ToVm]zPOUt nStartPos,nEndPos,i); :
LI*#~'Ka Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); vQ}llA
h fileSplitterFetch.start(); w#,C{6 } rB:W\5~7 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), b
fsTe W+ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ,9p
4(jjX // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", p`JD8c nEndPos = " + nFileLength); jM90
gPX>, // fileSplitterFetch[nPos.length-1].start(); y(8AxsROp f+huhJS5e qyuU //等待子线程结束 `=Hh5;ep //int count = 0; y85/qg)H^ //是否结束while循环 #SRGVa`x boolean breakWhile = false; K_B-KK(^ y8un&LP x*[\$E`v while(!bStop) /wL}+ { \6xVIQ& 0 write_nPos(); v7/qJ9l Utility.sleep(500); e? fFh,a breakWhile = true; ~V"D|U;i + .~6p/fHX DO$jX
4 for(int i=0;i<nStartPos.length;i++) |L4K# { :-
ydsR/ if(!fileSplitterFetch.bDownOver) _S#uxgL< { }4kd=]Nk breakWhile = false; 1G+42>?<1 break; Ed)t87E } ><[($Gq`g } n-{G19? if(breakWhile) p/xxoU break; Nq)=E[$ n||/3-HDj _}7N,Cx //count++; =x~HcsJ8!R //if(count>4) +)FB[/pXk // siteStop(); W9?Vh{w } T'l >$6 {ls$#a+d gfs?H # System.err.println("文件下载结束!"); &/4W1=>( } V 3-5:z catch(Exception e){e.printStackTrace ();} /4]M*ls } QOkPliX m-UI^M,@< [dL4u^]{ //获得文件长度 :0j9 public long getFileSize() 2*5Z|
3aX { >v`lsCGb int nFileLength = -1; |b52JF
", try{ `Xnu("w) URL url = new URL(siteInfoBean.getSSiteURL());
e@6<mir[4 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Mjrl KI}f/ httpConnection.setRequestProperty("User-Agent","NetFox"); $z]gy]F C w`v\
9 E3y" int responseCode=httpConnection.getResponseCode(); g&H6~ +\ if(responseCode>=400) `6b!W0$
- { }r6SV%]: processErrorCode(responseCode); HP2]b?C return -2; //-2 represent access is error #m6 eG&a } _U)DL=a' INsc!xOQ e;56}w String sHeader; h84}lxT^] ^PfFW [Zk|s9 for(int i=1;;i++) PWOV~`^; { z1?7}9~`0c //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 6';'pHqe //Utility.log(in.readLine()); )%U&z>^P sHeader=httpConnection.getHeaderFieldKey(i); 9Nglt3J[ if(sHeader!=null) <1VzQH!o { 1_THBL26d if(sHeader.equals("Content-Length")) %<JjftNQ { P7(+{d{ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); JGp~A#H& break; &+=A;Y) } EUU9JnQhBJ } n3-u.Fb else PBb@J'b break; >n)N=Zyu } V4}9f5FR } RX%*:lXi_ catch(IOException e){e.printStackTrace ();} !MNUp(: catch(Exception e){e.printStackTrace ();} w%)=`'s_ 6|t4\' BCk$FM@ Utility.log(nFileLength); iVzv/Lqm1 ~oh=QakW Z+@" return nFileLength; 2P~zYdjS } M;={] w@n b2.
xJ4 {n=)<w //保存下载信息(文件指针位置) z@^l1)m private void write_nPos() 0m6Vf
x { Ps(3X@ try{ CE:TQzg output = new DataOutputStream(new FileOutputStream(tmpFile)); *[(O&L&0 output.writeInt(nStartPos.length); fP%hr gL for(int i=0;i<nStartPos.length;i++) >Qz#;HI { $ckX H,l_ // output.writeLong(nPos); 1g5%Gr/0$5 output.writeLong(fileSplitterFetch.nStartPos); 'H<?K output.writeLong(fileSplitterFetch.nEndPos); @;M( oFS9 } 9~bje^M output.close(); g= k}6"F~ } i2/:'
i catch(IOException e){e.printStackTrace ();} Zh]d&Xeq catch(Exception e){e.printStackTrace ();} Glcl7f"<^ } &xMR{: ={-\)j R3<>]/1p|P //读取保存的下载信息(文件指针位置) h #Od tc1) private void read_nPos() 7-.YVM~R { ?N<* ATCL try{ 6]rIYc[, DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); *<#jr int nCount = input.readInt(); 11}X2j~Ww nStartPos = new long[nCount]; W~k"`g7uu nEndPos = new long[nCount]; MQY^#N for(int i=0;i<nStartPos.length;i++) L"A,7@:Vd { NduvfA4 nStartPos = input.readLong(); RxY
;'NY nEndPos = input.readLong(); -mOSB(#bo } A9ia[2[ input.close(); wGD".CS0 } T>e!DOW; catch(IOException e){e.printStackTrace ();} =0TnH<` catch(Exception e){e.printStackTrace ();} mS5'q q;t } DcE)6z# e)LRD&Q uA7~`78 private void processErrorCode(int nErrorCode) %+YLe-\? { O&Q_vY System.err.println("Error Code : " + nErrorCode); N^pTj<M<g } OACRw%J:X{ $]Kgs6=r Ol6jx%Je` //停止文件下载 os|8/[gT public void siteStop() "qjkwf)\ { at]=SA bStop = true; >{p&_u.r- for(int i=0;i<nStartPos.length;i++) P%
_cIR fileSplitterFetch.splitterStop(); I?LJXo \O sx IvL7jl j+"i$ln+s } B*p`e1 } \:9dt8(-U //负责部分文件的抓取 0m7ANqE[Z **FileSplitterFetch.java wv>*g:El' */ zD:"O4ZM^^ package NetFox; O-y/K2MC* k'E3{8<! Mh"DPt9@J import java.io.*; %yX?4T;b import java.net.*; 'd 4I/ losm< [ Hw public class FileSplitterFetch extends Thread { rXc-V},az8 QE*O~Yj 16ahU$@- String sURL; //File URL ~A2{$C long nStartPos; //File Snippet Start Position \B) a57 long nEndPos; //File Snippet End Position r:lv[/D int nThreadID; //Thread's ID iz!E1(z( boolean bDownOver = false; //Downing is over B/.+&AJw boolean bStop = false; //Stop identical A&X(\ c M FileAccessI fileAccessI = null; //File Access interface EjW3_ % sS(t
}$ &NZl_7PL public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException =(:{>tO_" { (? j $n?p this.sURL = sURL; =NLsT.aa this.nStartPos = nStart; gcDo o2RE this.nEndPos = nEnd; nf=*KS\v nThreadID = id; a3D''Ra fileAccessI = new FileAccessI(sName,nStartPos);//定位 e f8_w6i } .'N:]G@! ([SrIG> X \^a(B{ public void run() 07 [%RG { |^9+c2 while(nStartPos < nEndPos && !bStop) 5Z"IM8? { G<n(\85X A2>rS s+IU%y/9$a try{ vFKX@wV S URL url = new URL(sURL); /{@^h#4M1 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); </!
`m8 \ httpConnection.setRequestProperty("User-Agent","NetFox"); ^f*}]`S String sProperty = "bytes="+nStartPos+"-"; 1{D_30sG. httpConnection.setRequestProperty("RANGE",sProperty); M &`ZF Utility.log(sProperty); eD5:0;X2 ,p2BB"^_i #yz5CWu InputStream input = httpConnection.getInputStream(); W[Kv
Qt3% //logResponseHead(httpConnection); )c|S)iJ7=z V@krw"vW I3sH8/* byte[] b = new byte[1024]; gwVfiXR4 int nRead; wMFo8;L while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) n[DQ5l { :'1UX <&B nStartPos += fileAccessI.write(b,0,nRead); l{q$[/J~) //if(nThreadID == 1) W=b<"z]RE // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); [O~'\Q } #m>Rt~(,S :lf;CT6$ OSP#FjH Utility.log("Thread " + nThreadID + " is over!"); ~DY5`jV bDownOver = true;
/tIR}qK //nPos = fileAccessI.write (b,0,nRead); YdsY2 } LF o{,%B catch(Exception e){e.printStackTrace ();} '2)c;/-E } DXX(q k)6 } xW|^2k 7C~qAI6Eg xX;@
BS //打印回应的头信息 P(iZGOKUs= public void logResponseHead(HttpURLConnection con) CbPCj.MH { 0LI:R'P+P[ for(int i=1;;i++) 2K >tI9); { F:$Dz?F0v String header=con.getHeaderFieldKey(i); 'zYKG5A if(header!=null) "V/|RC //responseHeaders.put(header,httpConnection.getHeaderField(header)); j5hM|\] Utility.log(header+" : "+con.getHeaderField(header)); Mou@G3 else 6 0C;J!D break; :CH*~o } \1`L-lz } e|Ip7` "F_o%!l z3F ^OU public void splitterStop() dFdll3bC { }mGOEG|F2 bStop = true; e<_yr>9g" } JtB"Dh D@]gc&JN[ VyRU_<xP } ZHPsGHA TTNgnP -KzU'' /* RX]x3- **FileAccess.java G` !ff *//文件访问(定位,写) _W@SCV)yH package NetFox; *7L*:g import java.io.*; OBF3)L] XBJ9"G5 2m`4B_g A
public class FileAccessI implements Serializable{ c k~gB 8 I'1~d%$ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 XTIRY4{
d RandomAccessFile oSavedFile; lHYu-}TNP long nPos; ~&E|;\G "|1MJuY_6 6k#H>zY, public FileAccessI() throws IOException Effp^7 3 { m7:E73: this("",0); Salu[)+? } [\9WqHs E\M{/.4 4 DNgQ.lV public FileAccessI(String sName,long nPos) throws IOException wp/u*g { 4fDo }~ oSavedFile = new RandomAccessFile(sName,"rw"); 'pE %'8R this.nPos = nPos; )B d`N^k+ oSavedFile.seek(nPos); FV[6">;g } 1'|6IR1' )g4oUZDF IBwquw+ public synchronized int write(byte[] b,int nStart,int nLen) 47Y|1 { Q37VhScs int n = -1; K#"@nVWJ.m try{ eO,
oSavedFile.write(b,nStart,nLen); /)80@ n = nLen;
]
=Js 5 } //--r5Q catch(IOException e) {$iJYS\ { (xU+Y1*g"% e.printStackTrace (); k&nhF9Y4 } _ Ko0 FNZB M _/[n/"gn return n; l<<G".? } 1B3,lYBM mB(*)PwZ 0XlX7Sk+ } i'!M<>7 >l$vu-k)~4 @LY 5]og /* O$
i6r]j_ **SiteInfoBean.java ;(w=}s%]+ */ `w Sg/ package NetFox; ";~}"Yz?[ ]\nG1+ta K{VF_S: public class SiteInfoBean { BfOG e!Si =erA.u Vvx(7p-GQ private String sSiteURL; //Site's URL $"{V],:T
| private String sFilePath; //Saved File's Path ADX} private String sFileName; //Saved File's Name XA])<dZ
private int nSplitter; //Count of Splited Downloading File TGLkwXOkT oWyg/{M [BhpfZNKRA public SiteInfoBean() S&-sl {//nSplitter的缺省值为5 TJY$<: //default value of nSplitter is 5 MW9B
-x this("","","",5); ,IUMH]D } U]sU
b3 (2@b ,w^ -b@E@uAX/ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) SX}GKu { |xzqYu?o sSiteURL= sURL; +!POKr sFilePath = sPath; 6,G^iv6H sFileName = sName; 5q]u: this.nSplitter = nSpiltter; {s8''+Q#(- 'D(Hqdr;: n#3y2,Ml } pmCBe6n\l i/xPO HqgTu` public String getSSiteURL() nGW
wXySq { if5Y!Tx?G return sSiteURL; z@y*
jT } $#4z>~0 [v-?MS 6@2p@eYo public void setSSiteURL(String value) LWbWj ^ { MC#bo{Bq3- sSiteURL = value; |iM*}Ix- } E08AZOY&g B4R,[WE" RqHxKj public String getSFilePath() e;3$7$n Pv { Lu:!vTRmw return sFilePath; \)BKuIP } @=wAk5[IN 54F([w 8zj09T[ public void setSFilePath(String value) l^`!:BOtR { k9 *0xukJ sFilePath = value; |r-<t } `?JrC3 6lT'%ho}B FA{I
S0 public String getSFileName() uy\YJ.WMQ { [9?=&O#* return sFileName; {OAy@6
+ } f| N(~ mA^>Y_: iI&SI#;
_ public void setSFileName(String value) =As'vt
0 { *C\4%l sFileName = value; cJ8*[H<NV } 6C]!>i}U Tao lX*$5 OD1ns public int getNSplitter() r)j#Skh]. { R:.7c(s return nSplitter; ^\+6*YE 4 } I:6xDDpZG` KktTR`W RM<\bZPc public void setNSplitter(int nCount) M2xUs { 3al5Vu2: nSplitter = nCount; j|aT`UH03 } }4
$EN } -nk %He r kD4}jV Gj)Qw6
/* *Mp<4B **Utility.java BK /;HG */ v>R.M"f package NetFox; V)(pe #P qw, >~ _^'k_a public class Utility { %ANPv = r*p%e\ 3 NX=dx&i>+ public Utility() 9hguC yr@h { ~r>UjC_
B: Mvcl9 F 1zc4l6 } 9MYt4 3p4bOT5 //线程睡眠 >y8Z{ALQ5 public static void sleep(int nSecond) 3o^V$N. { 57MoO try{ AT9SD vJ Thread.sleep(nSecond);
Y-{spTI } WI~%n
catch(Exception e) VmT5?i { ^X;>?_Bk e.printStackTrace (); eD(a
+El} } T ]zjJwa } g1{wxBFE 9E#(i P //日志 oaXD^H\ public static void log(String sMsg) sO6t8)$b { %4-pw|': System.err.println(sMsg); hBqu,A } U&/S >S3 >b <A&R%5Vs public static void log(int sMsg) *oWzH_ { =N0cz% System.err.println(sMsg); =~S
} o{Ep/O` } uJ y@ vVf!XZF d!X?R} /* 5(|ud)v **TestMethod.java HWU{521 */ ZT8j9zs package NetFox; Oxvw`a# A&7jE:Ew `&6]P :_qp public class TestMethod { puyL(ohem j w462h S\rfR N public TestMethod() ;lEiOF+d { ///xx/weblogic60b2_win.exe +=8Po'E^!d try{ x}[` - SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); ,5?MRqCM //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); W!^=)Qs
SiteFileFetch fileFetch = new SiteFileFetch(bean); l`]!)j|+ fileFetch.start(); M*HG4(n0 } !Ch ya catch(Exception e){e.printStackTrace ();} e_;6UZ+ igL^k`&5^" /Rz,2jfRx' } 6};oLnO ou-;k
} /W>"G1) public static void main(String[] args) 7L6M#B[)e5 { ?n+\T'f! new TestMethod(); q<8HG_ } Z}C%%2Iz } aKy|$
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