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/* =>Ae]mi7 **SiteFileFetch.java /oe0 */ R-n%3oh package NetFox; 7>7n|N import java.io.*; g- #eMQ%J import java.net.*; n}Thc6f3D Rq(+zL(f +>ituJ public class SiteFileFetch extends Thread { zB y%$5~Fw u]B
b ^[ 0|va}m`<3G SiteInfoBean siteInfoBean = null; //文件信息Bean nq7)0F%e long[] nStartPos; //开始位置 ~qb?#IY]` long[] nEndPos; //结束位置 D.AiqO<z FileSplitterFetch[] fileSplitterFetch; //子线程对象 a&[[@1OY long nFileLength; //文件长度 yT3K 2A boolean bFirst = true; //是否第一次取文件 ~O./A-l boolean bStop = false; //停止标志 M[b~5L+S File tmpFile; //文件下载的临时信息 $aXYtHI DataOutputStream output; //输出到文件的输出流 .ZQXY%g 2mj>,kS?c //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) |OF3J,q public SiteFileFetch(SiteInfoBean bean) throws IOException bU}!bol { /Y\q&} siteInfoBean = bean; -{eiV0<^ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 7 je1vNs tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); /mE:2K]C if(tmpFile.exists ()) c?xeBC1- { vA*NJ%&` bFirst = false; ND9;%<80 read_nPos(); k]& I(VQ" } w\t else .*FlB>1jy { /%?bO- nStartPos = new long[bean.getNSplitter()]; 0x'Fi2=` nEndPos = new long[bean.getNSplitter()]; $3#oA.~R/ } W#b++}S mMhe,8E& _;(QMeR 3joMtRB>; } \hzx? 3_VWtGQ qj*BV public void run() IfRrl/!nw { %ULd_ES^ //获得文件长度 ?K}KSJ6_ //分割文件 JLyFkV/
//实例FileSplitterFetch 84Hm
PPt //启动FileSplitterFetch线程 WFeaX7\b //等待子线程返回 5U<o%+^El try{ A]V<K[9:b if(bFirst) mW_A3S5 { Q%GLT,f1. nFileLength = getFileSize(); E\}Q9,Z$ if(nFileLength == -1) Xw^:<Nx: { DUm/0q& System.err.println("File Length is not known!"); QQ,w:OjA0 } )>=|oY3 else if(nFileLength == -2) )^^}!U#|e { ~>$(5s2 System.err.println("File is not access!"); 10/3 -)+ } !q PUQ+ else J_|>rfW { ~0.@1zEXj for(int i=0;i<nStartPos.length;i++) YX2j;Y? { pk=z<OTb nStartPos = (long)(i*(nFileLength/nStartPos.length)); M[T!AO-S$ } p:U{3uN 62 for(int i=0;i<nEndPos.length-1;i++) 3^&pb { ] @1ncn7N nEndPos = nStartPos[i+1]; RzSN,bLR } p7O4CP>9[ nEndPos[nEndPos.length-1] = nFileLength; p/s5[>N } CV7.hF< } z!j`Qoh?V9 WHF:>0B XlNB9\"5 //启动子线程 s*}d`"YvH fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 0$49X for(int i=0;i<nStartPos.length;i++) 2I39fZa { Un[#zh<4 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), &jPsdv h siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), gzdgnF2 nStartPos,nEndPos,i); 8|Y^z_C Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ~yf 5$~Z fileSplitterFetch.start(); MN)<Tr2f } mKq9mA"(E // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), `Op
";E88 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); %s)E}cGH // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ~GY;{ nEndPos = " + nFileLength);
IWpUbD|kC // fileSplitterFetch[nPos.length-1].start();
Q{Bj(f 7y`~T+ 2W~2Hk=0+% //等待子线程结束 TT&!WbA-Hk //int count = 0; o_$r*Z|HG //是否结束while循环 RMrt4:-DI boolean breakWhile = false; gA) F uTJ?@^nq \S2'3SDd/ while(!bStop) Wj*6}N/ { wy&*6>. write_nPos(); O "h+i>|l Utility.sleep(500); #QDV_ziE5 breakWhile = true; XJ NKM~ ,wEM {k]VT4/ for(int i=0;i<nStartPos.length;i++) `RzM)ILl { \1B*iW if(!fileSplitterFetch.bDownOver) SoY&R= { Ia"bP` L breakWhile = false; :3Jh f$ break; I5"=b}V5 } u})JQ<| } \)"qN^we if(breakWhile) NAocmbfNz break; -jw=Iyv "7
4 L ]V]o%onW //count++; XF$C)id2p //if(count>4) nW%c95E // siteStop(); BPOWo8TqD^ } &]c9}Ic dCyQC A[ *:_hOOT+[ System.err.println("文件下载结束!"); f3h9CV } Y\x
Xo? catch(Exception e){e.printStackTrace ();} Qqaf\$X } QtzHr bcE DjLXq ~5#7i_%@E} //获得文件长度 wLbnsqa public long getFileSize() Y{'G2)e { Stw6%T- int nFileLength = -1; y|mR'{$I try{ gy[uqm_ T URL url = new URL(siteInfoBean.getSSiteURL()); \
a<Ye
T HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 1wM
p3 httpConnection.setRequestProperty("User-Agent","NetFox"); 1|89-Ii] 5~?
J abv] int responseCode=httpConnection.getResponseCode(); TP^0`L if(responseCode>=400) 0nuFWV { A,/S/_Q= processErrorCode(responseCode); P$QfcJq&c* return -2; //-2 represent access is error 3WVHI$A9 } $_UF9l0 &pAT pQ hv3F String sHeader; GgYomR: Vqr&)i"b$ eyWwE% for(int i=1;;i++) DQ}]'*@? { iB`m!g6$ //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); -|kDa1knA //Utility.log(in.readLine()); YD%Kd&es sHeader=httpConnection.getHeaderFieldKey(i); +Lr0i_al if(sHeader!=null) N!3f1d7RQ { ;vx9xs?6 if(sHeader.equals("Content-Length")) HTG;'$H^ { /P%:u0fX, nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); >JMKEHl.q break; S'e2~-p0F } I|:j~EY } aU! UY( else @mazwr{B break; re*/JkDq3K } V]2z5u_q } kShniN catch(IOException e){e.printStackTrace ();} ublY!Af catch(Exception e){e.printStackTrace ();} YGO@X(ej, $} Myj'`r |+bG~~~%j Utility.log(nFileLength); .,,73" .wSAysiQ|P v>5F[0gE return nFileLength; B+LNDnjO] } V_kE"W) sFTIRVXN, jj2UUQ| //保存下载信息(文件指针位置) 4Ojw&ys@V private void write_nPos() U{Z>y?V/ { ^J_hkw~gO try{ ,d+mT^jN output = new DataOutputStream(new FileOutputStream(tmpFile)); 2vC=.1k output.writeInt(nStartPos.length); 2 *$n? for(int i=0;i<nStartPos.length;i++) K&h6#[^\d { DPOPRi~ // output.writeLong(nPos); Ah`dt8t output.writeLong(fileSplitterFetch.nStartPos); 4@I]PG output.writeLong(fileSplitterFetch.nEndPos); EUkNh>U? } =)8Ct output.close(); 68*{Lo?U } _;{-w%Vf catch(IOException e){e.printStackTrace ();} qg/5m;U catch(Exception e){e.printStackTrace ();} gib]#n1!p } z"#.o^5 !)=o,sVA CmOb+:4@K //读取保存的下载信息(文件指针位置) Ul
Iw&U private void read_nPos() EoeEg,'~F { EiUV?Gvz try{ P$Q&xN<#) DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ~aG-^BAS int nCount = input.readInt(); (Nahtx!/9 nStartPos = new long[nCount]; %"zJsYQ! nEndPos = new long[nCount]; Biwdb for(int i=0;i<nStartPos.length;i++) $5r,Q{;$ { O@rb4( nStartPos = input.readLong(); }TW=eu~ nEndPos = input.readLong(); !*gAGt_ } >``GDjcJ input.close(); ,GIqRT4K } |Y11sDa9h catch(IOException e){e.printStackTrace ();} ]r6bJ2 catch(Exception e){e.printStackTrace ();} Bl];^W^P } 6pR#z@, aw1J#5j`n HV.7IyBA^ private void processErrorCode(int nErrorCode) X;:xGZ-oY { f,>i%. System.err.println("Error Code : " + nErrorCode); ex458^N_ } ]o$/xP rUjr'O0 G65N: //停止文件下载 D$E9%'ir public void siteStop() `t&;Yk]-L { C5UDez bStop = true; S+Yg!RrNqj for(int i=0;i<nStartPos.length;i++) ;g
jp&g9Q fileSplitterFetch.splitterStop(); 6,1|y%(f 5QJL0fc
h$\hPLx } us%RQ8=k } zQ}N
mlk //负责部分文件的抓取 CaBS0'
n **FileSplitterFetch.java %LHV 0u */ [Gy'0P(EQ package NetFox; V?BVk8D}; Pltju4.:C K3DJ"NJ<Ji import java.io.*; -d'|X`^nE import java.net.*; GNc|)$ ,0]28D nn4Sy,cz public class FileSplitterFetch extends Thread { FaE orQ g"S+V#R d
A{Jk String sURL; //File URL T(^8ki long nStartPos; //File Snippet Start Position gq3OCA!cX long nEndPos; //File Snippet End Position GuvF int nThreadID; //Thread's ID |LE++t*X~ boolean bDownOver = false; //Downing is over mtddLd, boolean bStop = false; //Stop identical e622{dfVS FileAccessI fileAccessI = null; //File Access interface v^fOT5\ lG>e6[Wc ^\jX5)2{ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException W%K8HAP " { 4CT9-2UC this.sURL = sURL; z,YUguc|
this.nStartPos = nStart; S=SncMO nE this.nEndPos = nEnd; Cpv%s 1M nThreadID = id; $4JX#lkt fileAccessI = new FileAccessI(sName,nStartPos);//定位 $#3<rcOq } "IJMvTmj [Od9,XBa .fY<"2g public void run() l>Ja[`X@ { y4rJ- while(nStartPos < nEndPos && !bStop) Z3>3&|& { _)2TLA
n3 >Eg .c +N:6wZ7<f try{ xGv,%'u\ URL url = new URL(sURL); G;c0 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 6RQCKN)
httpConnection.setRequestProperty("User-Agent","NetFox"); k+GnF00N^8 String sProperty = "bytes="+nStartPos+"-"; bI6wE'h httpConnection.setRequestProperty("RANGE",sProperty); <SdJM1%Qo Utility.log(sProperty); .eB"la|d {eN{Zh5" FKnQwX.0 InputStream input = httpConnection.getInputStream(); VQjFEJ //logResponseHead(httpConnection); 1";e'?^x SliQwm5 -G#@BtB2+ byte[] b = new byte[1024]; EiP&Y,vT int nRead; (A fbS=[ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) '4lT*KN7\ { wf<`J/7u nStartPos += fileAccessI.write(b,0,nRead); yPG\ &Bo //if(nThreadID == 1) }.V0SM6 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); >@"3Q` } IYg3ve`x TxxB0 nk$V{(FJ Utility.log("Thread " + nThreadID + " is over!"); o+Ti$`2<O7 bDownOver = true; ur,"K'w //nPos = fileAccessI.write (b,0,nRead); bTy)0ta>AF } <;0N@
catch(Exception e){e.printStackTrace ();} ';|>`< } {^5<{j3e }
)k] !u V3~a!k 8421-c6y> //打印回应的头信息 jI2gi1,a public void logResponseHead(HttpURLConnection con) bW.zxQ: { *
r4/|.l for(int i=1;;i++) ^'53]b: { SOQ-D4q String header=con.getHeaderFieldKey(i); vp75u93 if(header!=null) 2n;;Tso" //responseHeaders.put(header,httpConnection.getHeaderField(header)); n.6
0$kR` Utility.log(header+" : "+con.getHeaderField(header)); U2>dwn else Fif^V break; h)l&K%4; } qb&NS4# } eTRx 6Fri( <Bb<?7q$ld fy=C!N&/ public void splitterStop() p2c=;5|/Q { $N+{r= bStop = true; hB$Y4~T% } m/c&/6nk 9_A0:S9Z /xm#:+Sc } U[e8K kPX2e h .6 ?>t!&W /* 5v>{Z0TE[6 **FileAccess.java qwNKRqT *//文件访问(定位,写) G9y12HV package NetFox; dMs39j import java.io.*; {F6dSF` :n>ccZeMv ,dj*p,J public class FileAccessI implements Serializable{ CVSsB:H6e s@)"IdSA( //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 EfBVu RandomAccessFile oSavedFile; !k= 0X\5L long nPos; :_QAjU ['Y+z2k |RAQ% VXm public FileAccessI() throws IOException :CkR4J!m3 { o=RqegL this("",0); _`X#c-J } 2hwXWTSu "X{aS} Y0u'@l_[F public FileAccessI(String sName,long nPos) throws IOException 7fW=5wc { )Rhf f$ oSavedFile = new RandomAccessFile(sName,"rw"); \abAPo this.nPos = nPos; Q(;B) oSavedFile.seek(nPos); OBw`!G*w } [
4Y
`O `k}l$ih`X nc\C4g public synchronized int write(byte[] b,int nStart,int nLen) ? __aVQ7 { VM]GYz|#] int n = -1; APtselC try{ 7tfivIj)e oSavedFile.write(b,nStart,nLen); ueE?"Hk n = nLen; 4/`h@]8P } A M1C
$ catch(IOException e) 4I#eC#" { \Ul.K!b7 e.printStackTrace (); |DFvZ6} } e@,u`{C[ :Hf0Qx6 QLB1:O> return n; g<rKV+$6 } RFn0P)9& VTJIaqw i#]aV]IT } 1t\b a1x Z4HA94 D-o7yc"K /* b,rH&+2H **SiteInfoBean.java 2i7i\?<. */ s?@)a,C%k package NetFox; <nb3~z1 $p0 /6c DD@)z0W public class SiteInfoBean { 0 .FHdJ< 1~R$$P11[9 R*Xu(89 private String sSiteURL; //Site's URL sMz^!RX@ private String sFilePath; //Saved File's Path ?}=-eJ(7e private String sFileName; //Saved File's Name &'huS?gA9 private int nSplitter; //Count of Splited Downloading File J~iOP W8G9rB|T MS st public SiteInfoBean() )H;pGM: {//nSplitter的缺省值为5 C?w<$DU //default value of nSplitter is 5 &$b\= this("","","",5); TDAWI_83- } .B 85!lCF %K%^ ]{ q?imE ~&U public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) r)6uX { e' U"`)S sSiteURL= sURL; j!lAxlOX sFilePath = sPath; y^mWG1"O sFileName = sName;
b(}Gm@# this.nSplitter = nSpiltter; N;Z`%& *?^Z)C> Sg. +`xww3 } e$Xq C5PmLiOHY> 4-7kS85 public String getSSiteURL() |RR%bQ^{ { fjIcB+Z return sSiteURL; _e?q4>B)c } ]DC;+;8Jc I!$jYY2 Ic[}V0dk public void setSSiteURL(String value) i<4>\nc { pKt-R07* sSiteURL = value; )YzH k ;( } XMN?;Hj> 6o=qJ`m[?
JJ/1daj public String getSFilePath() ,&.W6sW { Z0[)u_< return sFilePath; ;dqk@@O"( } J Q)4}t JkSdLj yaH
Trh% public void setSFilePath(String value) >aEL;V=}P { G3RrjWtO sFilePath = value; dSOlD/c
} Fw_
(q! KqM! ! May&@x/oMS public String getSFileName() 4meidKw] { u(pdP" return sFileName; 1Yc%0L( } hD nM+4D _\
. Xh.+pJl,* public void setSFileName(String value) I86e&"40 { 8{R_6BS sFileName = value; ! jbEm8bt } _Kc1 J0^{,eY< cPpu public int getNSplitter() 5cD
XWF { h [nH<m return nSplitter; n?'d|h } &EAk
z [096CK ]>tq|R78 public void setNSplitter(int nCount) 3g4e']t { `1nRcY nSplitter = nCount; 9<xTu>7J } BG'6;64kx6 } a
@6^8B?w; G/v|!}?wG ds-
yif6 /* SHMl%mw **Utility.java _h0- */ c {1V. package NetFox; ?22d},. mfXD1]<. `.{U-U\ public class Utility { ; D1FAz pG/
NuImA yh S#&)O public Utility() WK
pUn8&N
{ }<vvxi Vy]A,Rn7 B,3 t` } +0VG[c\8 A#<vG1 //线程睡眠 S8\+XJ public static void sleep(int nSecond) `SCy<w3$+[ { E@:Q 'g% try{ TbOJp Thread.sleep(nSecond); [}z?1Gj;W( } IuNkfBe4m catch(Exception e) e#tIk;9Xz { nz^nptw e.printStackTrace (); XJe/tR } E]NY
(1 } GGH;Z WSe #C4|@7w% //日志 BsKbn@'uC public static void log(String sMsg) p~h4\.*` { t) LU\! System.err.println(sMsg); 0z/h+, } g;8M<`qvf 1Yud~[c Zp`~}LV{ public static void log(int sMsg) My. dD'C { C1 W>/?XC System.err.println(sMsg); PC|'yAN:
} C5Xof|#p| } 9qEOgJ [6H}/_nD ]3}feU+ /* oew|23Ytb **TestMethod.java A^-iHm */ %*6RzJO6 package NetFox; @:
Z#E[N H {(;B5rs a2o.a2
public class TestMethod { >rKhlUD zhX;6= X2 /9 pbnzn public TestMethod() X<Z(]`i { ///xx/weblogic60b2_win.exe _
\l
HI try{ K5{{:NR$ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); QP:9%f>= //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); .:8[wI_f SiteFileFetch fileFetch = new SiteFileFetch(bean); mH)OB?+lq fileFetch.start(); GMBJjP&R] } }wfI4?}j} catch(Exception e){e.printStackTrace ();} ^p,3)$ 2 l(Dee Y ? ~,JY } gwiR/(1 Tv\HAK<N ~
7}] public static void main(String[] args) /_q#ah { M|k&TTV new TestMethod(); to'j2jP } %*jGim~s } U+} y
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