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/* n4XMN\:g{ **SiteFileFetch.java
Tu'E{Hw */ 7j95"mI package NetFox; :(RL8 import java.io.*; <EOg,"F import java.net.*; IwnYJp:9v Ta,u-!/I y!BB7cK6 public class SiteFileFetch extends Thread { n<+~ zQ iF+S%aPd# M Yu?&}%^ SiteInfoBean siteInfoBean = null; //文件信息Bean WY3_7k8u long[] nStartPos; //开始位置 U0zW9jB long[] nEndPos; //结束位置 UzN8G$92qF FileSplitterFetch[] fileSplitterFetch; //子线程对象 B\NcCp`5 long nFileLength; //文件长度 @!,D%]8" boolean bFirst = true; //是否第一次取文件 (c
1u{ boolean bStop = false; //停止标志 XZ;*>( File tmpFile; //文件下载的临时信息 :Z]/Q/$ DataOutputStream output; //输出到文件的输出流 @s3aR*ny$ fg< (bXC //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) +-'`Q Ae public SiteFileFetch(SiteInfoBean bean) throws IOException |zg=+ { XZ!cW=bqS siteInfoBean = bean; 7- (>"75Q| //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); e|35|I ' tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); \}n !yYh( if(tmpFile.exists ()) {W]bU{%. { v5P*<U Ax bFirst = false; /1H9z`qV read_nPos(); rn[$x(G } ,WzG.3^m else JIB?dIN
1 { qW+=g]x\ nStartPos = new long[bean.getNSplitter()]; HarYV : nEndPos = new long[bean.getNSplitter()]; vRq=m8 } [`cdlx?Eh fc[" #R5we3&p ttTI#Fr2 } `\nON 70d] d+M| b"`ru~] public void run() \=$EmHF { zK[
7:< //获得文件长度 5/zf
x //分割文件 fpI;`s //实例FileSplitterFetch >2FAi., //启动FileSplitterFetch线程 pE~9o 9 //等待子线程返回
$@5%5 try{ j\%?<2dj= if(bFirst) 1y_fQ+\2A { +"TI_tK,S nFileLength = getFileSize(); dxk;@Tz if(nFileLength == -1) "
&_$V@S { _K*\}un2 System.err.println("File Length is not known!"); EY,;e\7O, } )w^GPlh else if(nFileLength == -2) [u,hc/PL { ~% D^Ga7 System.err.println("File is not access!"); jdV .{8@ } CM+F7#T?n else nNd`]F^U { Q$/V) 0 for(int i=0;i<nStartPos.length;i++) +9Xu"OFm { ey'pm\Z nStartPos = (long)(i*(nFileLength/nStartPos.length)); a3b2nAI l } u^j8
XOT for(int i=0;i<nEndPos.length-1;i++) a!TBk=P { 8<E!rn- nEndPos = nStartPos[i+1]; 4r68`<mn[ } 6M
O|s1zk nEndPos[nEndPos.length-1] = nFileLength; 3ybK6!g`[ } @&!=m]D* } U)O?|
VN^o <XkkYI( ,6S_&<{ //启动子线程 o|zrD~&$ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; JL}hOBqfI for(int i=0;i<nStartPos.length;i++) {mCKTyN+ { [
t>}SE fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), aYv'H siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), UE}8Rkt nStartPos,nEndPos,i); Jdk3)
\ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); bIvJs9L fileSplitterFetch.start(); uzzWZ9Tv } yv6Zo0s<J // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), mq|A8>g siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); BK`Q)[ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 0~PXa(!^K nEndPos = " + nFileLength); I?^Q084 // fileSplitterFetch[nPos.length-1].start(); 3D 4]yR5 %J/fg<W1 "z{_hp{T^ //等待子线程结束 ^g}gT-l% //int count = 0; :,xyVb+ //是否结束while循环 ^P3g9'WK boolean breakWhile = false; .(P@Bl]XJ Fy4< D[>XwL while(!bStop) Ak%no3:9 { b@{%qh,C write_nPos(); 2|T|K?R^ Utility.sleep(500); *_2O*{V breakWhile = true; GY0XWUlC oP43 NN~ X\c1q4oB[ for(int i=0;i<nStartPos.length;i++) PsF- 9&_ { @1J51< x if(!fileSplitterFetch.bDownOver) z$I[kR%I{ { N+C%Z[gt[ breakWhile = false; >Rl0%! break; ]noP } Et@=Ic^E } rA1zyZlz if(breakWhile) ^5FJ}MMJf break; ,Do$`yO+ 0~@L%~
\
pe[V~F //count++; 36x5 q 1 //if(count>4) .dg 4gr\D // siteStop(); xy-$v } #G[
*2h~99 s&_IWala (d5vH)+A System.err.println("文件下载结束!"); N>cp>&jV } oneSgJ catch(Exception e){e.printStackTrace ();} I;Z`!u:+ } >~^mIu_BH v
,G-k2$Qe 8vX*SrM //获得文件长度 OxmlzQ"vM public long getFileSize() N$ qNe'b { @>
+^< int nFileLength = -1; pZ@W6} try{ /`j K URL url = new URL(siteInfoBean.getSSiteURL()); OGE#wG"S HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); t`Y1.]@U httpConnection.setRequestProperty("User-Agent","NetFox"); Lv, ji_ H(5ui`' s ~q#[5l(r8 int responseCode=httpConnection.getResponseCode(); kw}ISXz v if(responseCode>=400) 9Ww=hfb5UW { *'`3]!A processErrorCode(responseCode); lo>-}xd return -2; //-2 represent access is error 9m#H24{V' } 9+N._u &ESR1$)'P @LkW_ String sHeader; ![X.% ]Nd'%M tx|"v|&e2 for(int i=1;;i++) mAYr<= { )z4kP09 //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); !5'
8a5 //Utility.log(in.readLine()); I")"s sHeader=httpConnection.getHeaderFieldKey(i); @$b+~X)7 if(sHeader!=null) um_M}t{ { go%X%Os] if(sHeader.equals("Content-Length")) nkCRe { ./BP+\)lO nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); *~t$k56 break; (X`t"*y" } *`pec3" } 3MBz else P7BJ?x break; ru6H nLhL } t+4%,n f_1 } iK6<^,]' catch(IOException e){e.printStackTrace ();} z}b U\3! catch(Exception e){e.printStackTrace ();} zOdasEd8! /O(;~1B Cn./N aq Utility.log(nFileLength); CgT QGJ}- 5x1jLPl' 3/SqXu return nFileLength; v_1JH<GJ- } b#\kZ/W -~Z@, i$LV44 //保存下载信息(文件指针位置) UNZVu~WnF private void write_nPos() P".qL5 { $nD k
mKl try{ ~]_jKe4W output = new DataOutputStream(new FileOutputStream(tmpFile)); ReGO9} output.writeInt(nStartPos.length); K~hlwjrt for(int i=0;i<nStartPos.length;i++) EJ
&ZZg { ^x1D]+ // output.writeLong(nPos); x+)hL
D[
n output.writeLong(fileSplitterFetch.nStartPos); <4A(Z$ZX) output.writeLong(fileSplitterFetch.nEndPos); gQ+_&'C } j|$y)FBX output.close(); BUy}Rn } .*wjkirF#~ catch(IOException e){e.printStackTrace ();} jtVPv] catch(Exception e){e.printStackTrace ();} Z]> e & N } uwS'*5tU FUTyx" hwol7B> //读取保存的下载信息(文件指针位置) !PP?2Ax private void read_nPos() Nm:|C 3_I { $gD(MKR)~ try{ ;Wrd=)Ka DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); s)&R W#:X int nCount = input.readInt(); =ILo`Q~ nStartPos = new long[nCount]; xzf)_ < nEndPos = new long[nCount]; T?}=k{C] for(int i=0;i<nStartPos.length;i++) |sZ9/G7 { q&Ua(I
nStartPos = input.readLong(); J`D< nEndPos = input.readLong(); V:"\(Y } va*>q-QCr input.close(); cF<DUr)Ve } pcxl2I catch(IOException e){e.printStackTrace ();} ()IgSj?, catch(Exception e){e.printStackTrace ();} #(Yb
lY } qP .VK?jF| o _,$`nEJ H&K)q5~ private void processErrorCode(int nErrorCode) s].Cx4VQ { 0#[Nfe* System.err.println("Error Code : " + nErrorCode); LF,c-Cv!jL } ;7og apWrcaj 1nM?>j%k //停止文件下载 j~j
V`>A public void siteStop() ne~#{q { GH)+yD[o bStop = true; ~|d?o5W for(int i=0;i<nStartPos.length;i++) %KVRiX fileSplitterFetch.splitterStop(); 5>k~yaju/ <HX-qNA? [(^''*7r+T } HBkQ`T } GISI8W^ //负责部分文件的抓取 6 VJj(9% **FileSplitterFetch.java 21J82M */ g=' 2~c package NetFox; Y?SJQhN6W oTa+E'q NZ? =pfK\s import java.io.*; E]Gq!fA&< import java.net.*; ;0}"2aGY Z"8cGN' 2OOj8JS public class FileSplitterFetch extends Thread { eMMiSO!3 VQJ5$4a& "%iR-s_> String sURL; //File URL
nLLHggNAV long nStartPos; //File Snippet Start Position MhB=+S[@ long nEndPos; //File Snippet End Position ?=o]Wx0(9 int nThreadID; //Thread's ID HOI`F3#XI boolean bDownOver = false; //Downing is over ,3TD $2};. boolean bStop = false; //Stop identical kR|DzB7 FileAccessI fileAccessI = null; //File Access interface 2F)OyE .\\#~r`t 3 /|^^v DL public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Jx[e{o)o { )uJ`E8>- this.sURL = sURL; Z`h_oK#y15 this.nStartPos = nStart; 20xGj?M this.nEndPos = nEnd; x-k/rZ nThreadID = id; F,$$N> fileAccessI = new FileAccessI(sName,nStartPos);//定位 AyXKhj#Ml } NNV.x7 24k}~"We p+1B6 j public void run() H0Xda.Y( { pNme jz: while(nStartPos < nEndPos && !bStop) E$fy*enON { R1%T>2"~& !f[N&se 3JO:n6 try{ B
~bU7.Cd URL url = new URL(sURL); 3gXUfv2ID HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); #3jZ7RqzQ httpConnection.setRequestProperty("User-Agent","NetFox"); A)0m~+?{J String sProperty = "bytes="+nStartPos+"-"; 'n`$c{N<tM httpConnection.setRequestProperty("RANGE",sProperty); ,
Vr6
Utility.log(sProperty); w0OK.fj lcLxqnv m/c~2?-; InputStream input = httpConnection.getInputStream(); T>?1+mruM //logResponseHead(httpConnection); Xq$0% WjG eh=bClk nr%^:u byte[] b = new byte[1024]; q "vT]=Y}: int nRead; h v+i{Z9!] while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 438>)= { _e^V\O> nStartPos += fileAccessI.write(b,0,nRead); nsn,8a38 //if(nThreadID == 1) g)Uh
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); hRiGW_t } qt)mUq;> sMo%Ayes m=y)i]=1 Utility.log("Thread " + nThreadID + " is over!"); ?|F;x" bDownOver = true; 3Q6#m3AWY //nPos = fileAccessI.write (b,0,nRead); _dY}86{ }
Hh/#pGf2 catch(Exception e){e.printStackTrace ();} SQRz8,sqkw } +4Ra N`I } <AXYqH7%A v:ZD}Q_ Lg53
Ms% //打印回应的头信息 <0MUn#7' public void logResponseHead(HttpURLConnection con) Kn]WXc|(" { hj[g2S%X for(int i=1;;i++) }e6:&`a xD { 3@A k6Uh String header=con.getHeaderFieldKey(i); ucO]&'hu: if(header!=null) V)@scB|>, //responseHeaders.put(header,httpConnection.getHeaderField(header)); 4df1)<}U- Utility.log(header+" : "+con.getHeaderField(header)); [C#pMLp,~ else =1uI >[aN break; Np)!23 " } {RO=4ba{J } &}?e:PEy nhxl# tt91)^GdYa public void splitterStop() od|.E$B { mcracj[B bStop = true; Q?q
m~wD } m]vr|:{6/ Sy~Mh]{E IT"jtV } EZFWxR/
YDL)F<Y Gj?q+-d!(5 /* ]].21 **FileAccess.java y->iv% *//文件访问(定位,写) h Nwb.[ package NetFox; U3QnWPt}> import java.io.*; O*7~t17 ;RYKqUE LdL\B0^l public class FileAccessI implements Serializable{ <WmCH+>?r )<&QcO_ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 K!mgh7Dx RandomAccessFile oSavedFile; ' ga2C\) long nPos; 5sUnEHN =Ch#pLmH $<#sCrNX public FileAccessI() throws IOException '%4,! { Ks-><-2+N this("",0); _Fjv.VQ, } >aK&T" Q.yoxq e%\K I\u public FileAccessI(String sName,long nPos) throws IOException AJ}Q,E { "/=xu| oSavedFile = new RandomAccessFile(sName,"rw"); H9?~#GPb this.nPos = nPos; cR} =3|t oSavedFile.seek(nPos); ~+hG}7(: } wz=I+IN: Gz:a1-x S7*:eo public synchronized int write(byte[] b,int nStart,int nLen) 5 Da(DA { G_@H:4$3 int n = -1; 04TV./uA try{ 9|,AhyhO oSavedFile.write(b,nStart,nLen); (@9-"W n = nLen; Z$@Nzza- } U# gmk0>t{ catch(IOException e) Zuf&maa S { 4a~_hkY] e.printStackTrace (); +{Ttv7l_2 } ,q1RJiR FE.:h'^h K9iR>put return n; }^t?v*kcA } 5q[@N J N 2\,6 < 1^mO"nX } l0f6L xfz $I%]jAh6 .*{LPfD| /* YDJc@*D **SiteInfoBean.java !% Md9Mu!o */ (nm&\b~j package NetFox; H^~!t{\ ic+iTH bVym public class SiteInfoBean { ;nbvn L`BLkDm
6IA~bkc} private String sSiteURL; //Site's URL O B:G5B` private String sFilePath; //Saved File's Path =:DNb( private String sFileName; //Saved File's Name IN"qJ3<k private int nSplitter; //Count of Splited Downloading File E*zk?G| +9t@eHJT1 fsu'W]f public SiteInfoBean() ]v#Q\Q8> {//nSplitter的缺省值为5 uzOZxW[e //default value of nSplitter is 5 ul
E\>5O4h this("","","",5); OLq/OO,w } H4U;~)i rHznXME$wZ /C"E*a public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) a"EXR-+8 { />$kDe sSiteURL= sURL; q-H]Hxv sFilePath = sPath; G|V ^C_: sFileName = sName; e>/PW&Z8Z this.nSplitter = nSpiltter; wp$=lU{B G 7u85cie h4U .wk } hM-qC|! v?}/WKe+0 z
'j%.Dd8 public String getSSiteURL() Mppb34y { y3vOb , 4 return sSiteURL; SRMy#j- } B; ~T|ex u z[B7k%} YS9| J=!~ public void setSSiteURL(String value) D .E>Y { {"s8X(#_sC sSiteURL = value; 1cPi>?R: } kC)dia{$ x9a0J1Nb-h K:y>wyzl public String getSFilePath() *ood3M[M^ { vg<_U&N=-r return sFilePath; qzq>C"z\Y$ } u >x2 R]dc(D
U7O2. y+ public void setSFilePath(String value) A\:M}D-( { l#Iof)@# sFilePath = value; F$.M2*9 } I3$v-OiL 7l?-2I'c `*!.B public String getSFileName() nRvV+F0# { +:D0tYk2B return sFileName; {oO!v}] } ^7=yjD` Yk }zN_v cOIshT1 public void setSFileName(String value) O*CKyW_$t { [qc90)^Q, sFileName = value; wEk9(| } /#blXI p<
XjiRq OA[w|Tt public int getNSplitter() .iw+# { :[Fwc return nSplitter; )V3G~p=0 } kIQMIL0+ Xf:-K(%e bBGLf)fsTG public void setNSplitter(int nCount) t1xX B^.M{ { Fm:Ri$iT nSplitter = nCount; =*t)@bn } gq/q]Fm\ } O -@7n0 Hh,\>= ': 8I
JFQDGA9 /* N'IzHyo. **Utility.java T<! TmG */ J-=&B5"O> package NetFox; azN<]u@. LFtnSB8 [<6ez;2q' public class Utility { n{|~x":9V :[!rj r" ^P>8 public Utility() i9$
-lk { B\BP:;" yYF%U7N/n I~EJctOG } "H6DiPh.E a&9+< //线程睡眠 sOv:/' public static void sleep(int nSecond) ZfoI7<?33 { @r=O~x try{ 64Q{YuI Thread.sleep(nSecond); rcAx3AK. } {o AJL catch(Exception e) o[aRG7C { fE,\1LK4 e.printStackTrace (); c.r]w } z" 4$mh } [WuN?H -:Yx1Y3
[ //日志
y3kXfSe public static void log(String sMsg) 0rooL<~fa { _>0I9.[5 System.err.println(sMsg); KftZ^mk+p } uK1DC i .*i.Z l.El3+ public static void log(int sMsg) (6!W8x7 { !np-Jmi System.err.println(sMsg); L~=h?C< } c#Y/?F2p } PIl:z?q({ J.35Ad1hM ?`lIsd /* K8daSvc **TestMethod.java qJj"WU5 */ 6;Wns' package NetFox; b dP @^Q a/^ojn 3P N<J public class TestMethod { wa2?%y_G !UDTNF?1 :;HJ3V; public TestMethod() t,Ss3 { ///xx/weblogic60b2_win.exe `B-jwVrN( try{ oP!oU2eqK SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); =~15q=XY0 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); '9.L5*wh] SiteFileFetch fileFetch = new SiteFileFetch(bean); !W^P|:Qt fileFetch.start(); ~x4]^XS } 5LM Ay" catch(Exception e){e.printStackTrace ();} f0S$p
R jI[Y< (F ; =*>ri } )G
a5c #?u#=] P-U9FKrt public static void main(String[] args) Xw)W6H| { C;>!SRCp new TestMethod(); Z4KYVHD, } =^3 Z
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