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/* ?gjM]Ki%: **SiteFileFetch.java ~=P&wBnJ */ GiB3.%R` package NetFox; n.,\Z(l|0 import java.io.*; <FmrYwt import java.net.*;
N\DEY] fR!'i):u Os9xZ public class SiteFileFetch extends Thread { h<i.@& nJ.pPzH2g InMeD[*^ SiteInfoBean siteInfoBean = null; //文件信息Bean DqrS5!C long[] nStartPos; //开始位置 di`Ql._M long[] nEndPos; //结束位置 13s!gwE) FileSplitterFetch[] fileSplitterFetch; //子线程对象 >+R`3|o
' long nFileLength; //文件长度 L~Epd.,Dt boolean bFirst = true; //是否第一次取文件 Q4-d2I>0 boolean bStop = false; //停止标志 qHg\n)R"x! File tmpFile; //文件下载的临时信息 T30!'F(*, DataOutputStream output; //输出到文件的输出流 URmx8=q gKcP\m //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) `DO`c>>K public SiteFileFetch(SiteInfoBean bean) throws IOException 0U ?1Yh7
m { mkTf}[O siteInfoBean = bean; ^-P lTmT //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); (w?@qs! tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ^~|P[} if(tmpFile.exists ()) gSK
(BP| { +60zJ4 bFirst = false; }Gr5TDiV0\ read_nPos(); Ua\g*Cxh } B+eB=KL else ZT95g { L{Epkay,{ nStartPos = new long[bean.getNSplitter()]; |HI=ykfI nEndPos = new long[bean.getNSplitter()]; EbuOPa } q
.nsGbl \TkBV?W pNr3u zm\=4^X } ,SuF1&4 { ;);E OF,<K%A public void run() <^|8\<J { I,QJ/sI //获得文件长度 fyT:I6* //分割文件 *-T3'beg //实例FileSplitterFetch 8263
//启动FileSplitterFetch线程 A!H6$-W|p //等待子线程返回 /"tVOv# try{ soA>&b!? if(bFirst) yPn5l/pDDr { u2y?WcMv nFileLength = getFileSize(); J:)Q)MT24: if(nFileLength == -1) x "]%q^x { KQaw*T[Q3w System.err.println("File Length is not known!"); fyYT #r } #* j else if(nFileLength == -2) {l.) *#O { 1$?O5.X: System.err.println("File is not access!"); xKEHNgen } h|m h_T{+ else *5sr\b4#S { "d/x`Dx for(int i=0;i<nStartPos.length;i++) ik_Ll| { 724E(?>J nStartPos = (long)(i*(nFileLength/nStartPos.length)); Vd4x!Vk } [G+M94[A for(int i=0;i<nEndPos.length-1;i++) -lRXH7|X { k4'rDJfB nEndPos = nStartPos[i+1]; ZGSb&!Ke } thOQcOf0$ nEndPos[nEndPos.length-1] = nFileLength; 0XSZ3dY&+ } ;n00kel$ } ko@I]gi2 Nj*J~&6G (ScL C //启动子线程 rr'RX fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; w'~f Z* for(int i=0;i<nStartPos.length;i++) pq#Hca[ { Q?L-6]pg fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), fxXZ^#2wX siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ^;$a_eR nStartPos,nEndPos,i); ?W1(
@. Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); E).Nu fileSplitterFetch.start(); L,p5:EW8. } {tk42}8k // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 5'?K(Jdmp siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); bT,]=h"0 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", U
PGS nEndPos = " + nFileLength); acdaDY // fileSplitterFetch[nPos.length-1].start(); 4(& W>E lE`hC#m PZKKbg2S //等待子线程结束 ox{)O/aj //int count = 0; H5S>|"`e`e //是否结束while循环 AVGb;)x# boolean breakWhile = false; {1'XS,2 }=?kf3k `22F@JYN while(!bStop) )/HSt%> { &`0y<0z write_nPos(); :@KWp{ D7 Utility.sleep(500); `XB(d@% breakWhile = true; VzA~w`$d ;<Oe\X {kD|8["Ie' for(int i=0;i<nStartPos.length;i++) 5 .0BaVwi { =PP]LDlJs if(!fileSplitterFetch.bDownOver) 0yfmQ=,X { ~#h@.yW^JN breakWhile = false; 8h=H\v^f break;
R,x\VX!| } =7e~L 3 K } 36@)a5 if(breakWhile) `S2YBKz,1 break; m%m/#\J E |t1D8){! ~=aGv%vX
//count++; \kF}E3~+# //if(count>4) eA$9)K1GO // siteStop(); 5O#CdN-S } 2.p7fu U`ey7
,oT?-PC$z System.err.println("文件下载结束!"); LUna stA^ } wr~# rfH catch(Exception e){e.printStackTrace ();} MIub^ $<C } .!\y<9 1RY}mq ?9mFI (r~ //获得文件长度
1t+]r:{ public long getFileSize() oil s;*q { R{NmWj['Mg int nFileLength = -1; T|GRkxd,E3 try{ [( BA:x1 URL url = new URL(siteInfoBean.getSSiteURL()); Nj1vB;4Nx HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); F6dm_Oq& httpConnection.setRequestProperty("User-Agent","NetFox"); 8iB1a6TlL !sfOde)$ 8E H#IiP int responseCode=httpConnection.getResponseCode(); :aV(i.LW
if(responseCode>=400) O _yJR { 4Smno%jq processErrorCode(responseCode); <:-|>R". return -2; //-2 represent access is error @2v L'6 } QKL5!
L9` J Xo_l #.$p7] String sHeader; rtS(iD@B" DM/J,q
UO5^4 for(int i=1;;i++) ,}2M'DSWa { x|<rt966A //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); >:4}OylhM //Utility.log(in.readLine()); tQ< ou, sHeader=httpConnection.getHeaderFieldKey(i); T)6p,l if(sHeader!=null) IVzJ| { ,@tYD(Z if(sHeader.equals("Content-Length")) \m1r(*Ar { A7>0Pn%D3 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 3Ew-Ia%A break; vRp =L54z } V.Dqbv } g05:A0X# else 'uGn1|Pvy break; \9geDX9A } [?r`8K2!, } T3u%V_ catch(IOException e){e.printStackTrace ();} )TnxsFC catch(Exception e){e.printStackTrace ();} Lfx&DK ! qXR>Z=K< 5rRYv~+ Utility.log(nFileLength); M&Sjo' ( . h`-aO u C|5eV=f)P return nFileLength; lsU|xOB } MLtfi{;LH |!euty :: 6AKH0t|4 //保存下载信息(文件指针位置) u3(zixb private void write_nPos() F-k3'eyY { P6&@fwJ< try{ 51W\ %aB output = new DataOutputStream(new FileOutputStream(tmpFile)); l3R`3@ output.writeInt(nStartPos.length); ;g?oU"Y M for(int i=0;i<nStartPos.length;i++) dX-{75o5P { {1li3K&0s // output.writeLong(nPos); "
|[w.` output.writeLong(fileSplitterFetch.nStartPos); F<Js"z+ output.writeLong(fileSplitterFetch.nEndPos); cW4:eh } 'e_^s+l)a output.close(); {" S"V } &Ey5 H?U! catch(IOException e){e.printStackTrace ();} xgn@1.}G catch(Exception e){e.printStackTrace ();} ~J^Gzl } !FX0Nx=oi Uh'3c" 'e^,#L_!o //读取保存的下载信息(文件指针位置) kngkG|du private void read_nPos() "toyfZq@ { v!27q*;8H try{ 7dyGC:YuTL DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); #56}RV1 int nCount = input.readInt(); YHAhF@& nStartPos = new long[nCount]; B!0o6)u' nEndPos = new long[nCount]; 6+u}'mSj8 for(int i=0;i<nStartPos.length;i++) D^yZ!}Kl { ZgQ4~s nStartPos = input.readLong(); ~B;kFdcVXn nEndPos = input.readLong(); <^snS,06 } j|gQe .,1 input.close(); r1b{G%;mJ } :#s6, catch(IOException e){e.printStackTrace ();} U\a.'K50F catch(Exception e){e.printStackTrace ();} pp@Jndlg } DP ,owk Kmc*z (Q fgIzT!fyz private void processErrorCode(int nErrorCode) +EjH9;gx { c,pR+DP System.err.println("Error Code : " + nErrorCode); )#n0~7
& } @[h)M3DFd GEj/Z};;[b /tR@J8pV //停止文件下载 mz$)80ly public void siteStop() d2`m0U { *@/1]W bStop = true; >
2_xRn<P for(int i=0;i<nStartPos.length;i++) !)gTS5Rh: fileSplitterFetch.splitterStop(); z(b0U6)qQ xO?w8 *d BwMi@r
= } X3&-kU } 95LZG1]Rb //负责部分文件的抓取 3Kuu9<0 **FileSplitterFetch.java qn)
VKx= */ Br^4N9 package NetFox; dz@L}b* g$bbm}6S )7!q>^S{B import java.io.*; aVkgE> import java.net.*; 9RA~#S|(T qd$Y"~Mco gS{hfDpk,h public class FileSplitterFetch extends Thread { 4UwXrEQp F/,K8<|r> _~~:@fy String sURL; //File URL I~Y1DP)R long nStartPos; //File Snippet Start Position tgmG#b* long nEndPos; //File Snippet End Position lh^-L+G:Ok int nThreadID; //Thread's ID (ndXz boolean bDownOver = false; //Downing is over yF2|w=! boolean bStop = false; //Stop identical OXu*wl(z FileAccessI fileAccessI = null; //File Access interface N
zrHWVD r\nKJdh;ka ab"6]%_ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException C>l{_J)n { w_zUA'n+ this.sURL = sURL; o[Ojl.r< this.nStartPos = nStart; @c3GJ'"X this.nEndPos = nEnd; fKEZlrw nThreadID = id; 7G6XK fileAccessI = new FileAccessI(sName,nStartPos);//定位 Jv_KZDOdk } 2stBW5v3 JF{yhx,+p 0_nY70B public void run() (4:&tm/; { Y)~Y; ;/G while(nStartPos < nEndPos && !bStop) hF m_`J&" { 4#<r}j12z 5Bwr\]%$P UqVcN$^b try{ ,q9nHZG^ URL url = new URL(sURL); o>Fc.$ngZ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Vo1,{"k httpConnection.setRequestProperty("User-Agent","NetFox"); _FpZc?= String sProperty = "bytes="+nStartPos+"-"; )y~FeKh httpConnection.setRequestProperty("RANGE",sProperty); g2?kC^=z= Utility.log(sProperty); ~!V5Ug_2 j:|um&`) q,Oj InputStream input = httpConnection.getInputStream(); QuB`}rfLf //logResponseHead(httpConnection); \!-IY r'|V z*/h qg7qTF& byte[] b = new byte[1024]; \\ZR~f!< int nRead; 7hV9nuW while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) Go^a~Sf$ { e6G=Bq$ nStartPos += fileAccessI.write(b,0,nRead); rC !!X //if(nThreadID == 1) 8>R 75dw // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); qu8!fFQjYL } t(~V:+W 9 \@\r`=WgB ~wejy3|@0 Utility.log("Thread " + nThreadID + " is over!"); p :v'"A} bDownOver = true; ;+-@AYl //nPos = fileAccessI.write (b,0,nRead); kdgU1T@y. } i}tBB~] catch(Exception e){e.printStackTrace ();} EWb'#+BP } E=*82Y=B } |_6V+/?"?` UO1WtQyu,H f6of8BOg //打印回应的头信息 biLNR"/E public void logResponseHead(HttpURLConnection con) [TW?sW^0 { lmGVSdo
for(int i=1;;i++) c*m7'\ { $a@T:zfe String header=con.getHeaderFieldKey(i); CI#6r8u if(header!=null) ]2_b_ok //responseHeaders.put(header,httpConnection.getHeaderField(header)); ^
gMkQYo(# Utility.log(header+" : "+con.getHeaderField(header)); 9 HiH6f^5 else cD%_+@GaU break; 7:M`k #oDP } *+i1m`6Q } VxP cC+ )X2/_3 +nIjW;RU public void splitterStop() ?5IF;vk { >eC>sTPQ{ bStop = true; hl/) 1sOIR } WR.>?IG2E 3LkcK1x. Ueb&<tS } 0X<U.Sxn tH)fu%:p -u$U~?|` /* 8}?wi[T **FileAccess.java Bjp4:;Bb *//文件访问(定位,写) j[RY package NetFox; KXiStwS import java.io.*; RxYC]R^78 h}U>K4BJ xxQgX~'x public class FileAccessI implements Serializable{ Y6[O
s1 V q[4RAd^P //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 @$|8zPs RandomAccessFile oSavedFile; ri1;i= W long nPos; :\]qB& 6pdek3pOCt v8y !zo' public FileAccessI() throws IOException d6XdN { 4J{W8jX this("",0); [$D%]]/, } -y'tz,En. s}<i[hY> ILIv43QKM( public FileAccessI(String sName,long nPos) throws IOException 0<)Ep~! { XE$;Z'Qhjm oSavedFile = new RandomAccessFile(sName,"rw"); 4d8}g25C this.nPos = nPos; &U_T1-UR2 oSavedFile.seek(nPos); 2@Zw#2|] } 717OzrF}A? 8xt8kf*k {yFMY?6rf public synchronized int write(byte[] b,int nStart,int nLen) v@,`(\Ca' { !q1XyQX int n = -1; i.0d>G><@ try{ 4*9BAv oSavedFile.write(b,nStart,nLen); G2dPm}s ZG n = nLen; pD]2.O } ujLje:Yc catch(IOException e) w:9M6+mM^ { OyQ[}w3o| e.printStackTrace (); o]B2^Yq;x } wAo6:)
Q">wl MM*9Q`cB return n; r2\}_pIj } ?L"x>$ i(4.7{* QN;GMX5& } I9h{fB 5&_R+g G_}oI|B /* c~= {A **SiteInfoBean.java gZ
us}U */ 8l<~zIoO package NetFox; tm.&k6% tILnD1q hyY^$p+ public class SiteInfoBean { | Pqs)Mb] v}<z_i5/C. e 8^%}\F private String sSiteURL; //Site's URL o\qeX|.70 private String sFilePath; //Saved File's Path !Pu7%nV. private String sFileName; //Saved File's Name 7
6HB@'xY private int nSplitter; //Count of Splited Downloading File [6?x 6_M X7SSTcA (L!u[e0[# public SiteInfoBean() y2PxC. - {//nSplitter的缺省值为5 _zLEHEZ- //default value of nSplitter is 5 W+.?J
60 this("","","",5); *7qa]i^] } n.A*(@noe f5R%F~ %5;kNeD\Fq public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) sA
}X)aP { iHWt;] sSiteURL= sURL; Lve$H(GHT sFilePath = sPath; oTA'=<W?D sFileName = sName; ?h8/\~Dw this.nSplitter = nSpiltter; @"^(} 6 -./Y XX*f } QzYaxNGv r<*Y1;7H' 72y!cK6 public String getSSiteURL() Lya?b { "?YpF2pD return sSiteURL; |h:3BV_ } 'v@1_HHW\ ^Cg@'R9 Fh)YNW@ public void setSSiteURL(String value) Kw>gg { v=H!Y"; sSiteURL = value; Pv@;)s(- } !" : arK m>b
i$Y 98WJ"f_ # public String getSFilePath() NO#^_N`#\ { a[gN+DX%L return sFilePath; td+[Na0d } EtB56FU\ ,I[A~ Pq(
)2B public void setSFilePath(String value) ix}*whW=U { W/;qMP1"- sFilePath = value; J15$P8J } yDw^xGws ;Y16I#?;Kh F~O!J@4] public String getSFileName() ;:gx;'dm5 { Iyvl6 return sFileName; YCQ+9 } /t?(IcP5 YJwz*@l hO:X\:G public void setSFileName(String value) FdJC@Y-#uA { uO-R:MC sFileName = value; ]0:R^dHE } x9CI>l K#{E87G( ("BFI public int getNSplitter() XC{(O:EG { <`m.Vbvm" return nSplitter; HM1y$ej } gf2w@CVF>= =U".L 9P)<CD0 public void setNSplitter(int nCount) o[ %Q&u { V1;Qt-i nSplitter = nCount; (;h]'I@ } Ic&t_B*i}] } BmUzsfD 3B"rI $Y0bjS2J /* @;,O V&XYn **Utility.java I.e' */ z(orA} [ package NetFox; qkUr5^1 @4B2O"z` 0I?3@Nz6 public class Utility { <p0$Q!^dK= (\/HGxv Yhw* `"X public Utility() (Fgt #H(B { Dfhs@ z A# M JN KZ'9 } fp![Pbms. lIFU7g //线程睡眠 N[+dX_h public static void sleep(int nSecond) }lb.3fqiA { (kuZS4Af try{ B=c^ma Thread.sleep(nSecond); \!V6` @0KC } 0\~Zg catch(Exception e) sTqB%$K} { \%Smp2K e.printStackTrace (); [1UqMkXtf } sk3;;<H } X0$_KPn |}|;OG //日志 8say"Qz public static void log(String sMsg) ha),N<' { n|*V
8VaL System.err.println(sMsg); mDmWTq\ } 5nn*)vK { I^|bQ3sor XN0Y#l public static void log(int sMsg) E{ ,O} { _#F'rl6' System.err.println(sMsg); .e AC!R } -&A[{m <,> } DRIv<=Bt {L eEnh- tVcs r /* E)E! **TestMethod.java i=a LC*@ */ >D;hT*3 package NetFox; W<L6, HKkf+)%)x dW`D?$(@, public class TestMethod { `IoX'|C[h kt#W~n z Y|g#V- public TestMethod() K5lp-F { ///xx/weblogic60b2_win.exe [s2V-'2 try{ h<.[U
$, SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); ,lJ6"J\8. //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); h'x~"k1 SiteFileFetch fileFetch = new SiteFileFetch(bean); TH!8G,(w fileFetch.start(); Mg$9'a"[\ } ,]mwk~HeF catch(Exception e){e.printStackTrace ();} %}!}2s.A 1znV>PO! 03o3[g? } tl5IwrF6; :gq@/COo( o
z{j2% public static void main(String[] args)
1}E@lOc { d6EY'*0 new TestMethod(); Ekme62Q>u } J\'5CG }
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