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/* v){ .Z^_C **SiteFileFetch.java @H !$[m3 */ "uLjIIl package NetFox; +!f=jg06 import java.io.*; ( 6(x'ByT import java.net.*; E1;@=#t2i q_
=b<.; e6=]m#O9 public class SiteFileFetch extends Thread { ]*O/+ ]CU]pK?nq >r &;3:" SiteInfoBean siteInfoBean = null; //文件信息Bean 9;yn}\N ` long[] nStartPos; //开始位置 74<!&t long[] nEndPos; //结束位置 PNW \*;j FileSplitterFetch[] fileSplitterFetch; //子线程对象 7^}Ll@ long nFileLength; //文件长度 /S:F)MO9 boolean bFirst = true; //是否第一次取文件 yBLK$@9 boolean bStop = false; //停止标志 7=@jARW& File tmpFile; //文件下载的临时信息 )pw&c_x DataOutputStream output; //输出到文件的输出流 *%Qn{x s08u @ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) rzp +: public SiteFileFetch(SiteInfoBean bean) throws IOException ,mPnQ? { *M7E#bQ5B siteInfoBean = bean; 4E44Hzs //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); D[O{(<9 tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); elG;jB if(tmpFile.exists ()) UEak^Mm;=2 { $ _8g8r} bFirst = false; <"o"z2 read_nPos(); hO{cvHy` } .s/fhk, else *9ywXm&? { [6jbgW~E nStartPos = new long[bean.getNSplitter()]; SM[Bv9|0 nEndPos = new long[bean.getNSplitter()]; HxK$ 4I` } 8\<jyJ p}Fs'l?7Rq wix5B@ Li 2Zndp } wwKh CmH n(~\l#o@ L.6WiVP) public void run() doHF|<s { 5>9Y|UU //获得文件长度 JT[*3h //分割文件 uhN%Aj\iu( //实例FileSplitterFetch NGYyn`Lx //启动FileSplitterFetch线程 h5
Vv:C //等待子线程返回 Q bhW!9(, try{ H* !EP if(bFirst) %/kyT%1 { G;gJNK"e nFileLength = getFileSize(); 4
;Qlu if(nFileLength == -1) A5#y?Aq { v"+k~:t* System.err.println("File Length is not known!"); XwM611 } }~Q"s2 else if(nFileLength == -2) h72UwJ2rw { 4VN aq<8 System.err.println("File is not access!"); Z?i /r5F } }aB#z<B6 else #s5 pz8v { KsAH]2Q% for(int i=0;i<nStartPos.length;i++) F=G{)*Ih { *X%m@KLIKv nStartPos = (long)(i*(nFileLength/nStartPos.length)); P+e KZo } m}VM+= for(int i=0;i<nEndPos.length-1;i++) i5hD# { G@S&1=nj3 nEndPos = nStartPos[i+1]; ~;-9X| } 9?+9UlJ7K nEndPos[nEndPos.length-1] = nFileLength; <<MjC5 } ]O:M$ $ } _i}wK?n L{g E'jCC ,xJrXPW //启动子线程 rl:KJ\*D fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; b syq* for(int i=0;i<nStartPos.length;i++) T+"f]v { 8F;>5i fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), zIQzmvf siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), _BnTv$.P nStartPos,nEndPos,i); E]^5I3=O Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); /I&wj^ fileSplitterFetch.start(); _17|U K|N } uK*Nu^ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Bp AB5=M0 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); B7NtkMK // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 5,+\`!g nEndPos = " + nFileLength); )J/HkOj"V // fileSplitterFetch[nPos.length-1].start(); uMXc0fs!$ toa-Wa{ 8uG0^h} //等待子线程结束 _3Q8n| //int count = 0; Mjpo1dw //是否结束while循环 @b!"joEy boolean breakWhile = false; A3P9.mur k/Mp6<?C: ~M?|Vn while(!bStop) O^{1RV3:,T { t7#lsd`_ write_nPos(); .I?@o8'x Utility.sleep(500); c $;\i breakWhile = true; Qqs"?Z,P <FFJzNc+ cErI%v}v0 for(int i=0;i<nStartPos.length;i++) bk#xiuwT { 5$l9@0D.\ if(!fileSplitterFetch.bDownOver) mAqDjRV1 { sB}]yw breakWhile = false; $,1dQeE break; wV<7pi } y<r}"TAf- } Uku5wPS if(breakWhile) :jNYP{Br break; 4yV].2#rl" ;cP8 ?U C;1PsSE+A //count++; Q/_#k/R //if(count>4) wuK=6RL // siteStop(); ~bU7QLr } pD`/_-=^h yM$J52#d# QrjDF> System.err.println("文件下载结束!"); DMgBcP } o 5Zyh26 catch(Exception e){e.printStackTrace ();} [$:,-Q @ } vd~U@-C=R :=g.o;(/N ?#[)C=p]z //获得文件长度 c;!g public long getFileSize() Vb6K:ZnF { #;j9}N int nFileLength = -1; i&ts YnP2 try{ 4_Rdp`x#J URL url = new URL(siteInfoBean.getSSiteURL()); n`5WXpz4; HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 4KIWb~0Y httpConnection.setRequestProperty("User-Agent","NetFox"); Cyk s 'Tf9z+0; _'iDF int responseCode=httpConnection.getResponseCode(); HFh /$VM if(responseCode>=400) l)}t,!M6 { b;vNq processErrorCode(responseCode); ]S/G\z return -2; //-2 represent access is error tW6#e(^l6 } u*R7zY K^D82tP a|x8=H String sHeader; T&}Ye\% V:^H4WvL\W 9`X&,S~e for(int i=1;;i++) N=fz/CD)I { -q2MrJ* //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); $adq7 //Utility.log(in.readLine()); mZoD033H sHeader=httpConnection.getHeaderFieldKey(i);
h)B!LAr
if(sHeader!=null) CyTFb$Z { lSCY5[? if(sHeader.equals("Content-Length")) Z] { @H { JLUms nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); i&F~=Q` break; fGO*%) } g5}7y\ } FN{/.?w( else >ZCo 8aK break; 9+VF<;Xw } JLW$+62 } K`+vfqX catch(IOException e){e.printStackTrace ();} ?[SVqj2- catch(Exception e){e.printStackTrace ();} &l^n4 BR3mAF wixD\t59X Utility.log(nFileLength); rgR?wXW]jE elKx]%k*) y9
uVCR return nFileLength; i7v/A&Rc } Z[;#|$J *PcVSEP/0 @,6ST0xT ( //保存下载信息(文件指针位置) &wGg6$ private void write_nPos() sMJ#<w}Q { g\J)= ,ju, try{ )+B=z}:Nfz output = new DataOutputStream(new FileOutputStream(tmpFile)); GMb!Q0I8 output.writeInt(nStartPos.length); W:B }u\)C for(int i=0;i<nStartPos.length;i++) =
o+7xom { @^HwrwRA // output.writeLong(nPos); }:^X X0:FK output.writeLong(fileSplitterFetch.nStartPos); KZ\dB;W<| output.writeLong(fileSplitterFetch.nEndPos); sA2o2~AmM } jEE_D +K output.close(); Q!)z)-hI } bw;iz,Z catch(IOException e){e.printStackTrace ();} N l|^o{# catch(Exception e){e.printStackTrace ();} }~GV'7d1 } Q0SW;o7 XPVV+. g^n;IE$B //读取保存的下载信息(文件指针位置) ORtg>az\% private void read_nPos() ;qG1r@o { x 8M#t(hw try{ h9Z[z73_a DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); |+mOH#Aty int nCount = input.readInt(); 5:_~mlfi nStartPos = new long[nCount]; I$Eg$q nEndPos = new long[nCount]; hLn&5jYHvt for(int i=0;i<nStartPos.length;i++) #mTMt;x { Ctj8tK$D nStartPos = input.readLong(); )+k[uokj nEndPos = input.readLong(); jDp]R_i } JchA=n input.close(); p}r yKW\cJ } 1J+3a-0 catch(IOException e){e.printStackTrace ();} 59/Q*7ZJ catch(Exception e){e.printStackTrace ();} !xJFr6G~8 } =%)}) {V=vnL-- o]
S`+ZcV private void processErrorCode(int nErrorCode) Lqq*Nr { Q%$i@JH`m System.err.println("Error Code : " + nErrorCode); M3PVixli3 } J;"nm3[.q \|Y{jG<cu +E)e1:8 //停止文件下载 {;;eOxOP| public void siteStop() \hu':@} { 8}J(c=4Gk bStop = true; i!y\WaCp for(int i=0;i<nStartPos.length;i++) ?^ eJ: fileSplitterFetch.splitterStop(); f5N<3 m= w[M5M2CF xz="|HD); } BMe72 } myffYK, //负责部分文件的抓取 [I_BCf **FileSplitterFetch.java a\Tr!Be, */ {MA@A5 package NetFox; =cknE= m_~y !__D}k, import java.io.*; @gY'YA8m import java.net.*; 0yKwH\S fg< (bXC +-'`Q Ae public class FileSplitterFetch extends Thread { ?F!W# XZ!cW=bqS 7- (>"75Q| String sURL; //File URL MQjG<O\ long nStartPos; //File Snippet Start Position EOofa6f&l long nEndPos; //File Snippet End Position +6wx58.B& int nThreadID; //Thread's ID 6@i|Kw(: boolean bDownOver = false; //Downing is over ~ }Kp boolean bStop = false; //Stop identical z`;&bg\8 FileAccessI fileAccessI = null; //File Access interface S/KVN(Z )|MIWgfWN Cd$dnHVh public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException P~n8EO1r { w
5!ndu this.sURL = sURL; KC#kss this.nStartPos = nStart; J,.j_ii`! this.nEndPos = nEnd; WFQ*s4 R( nThreadID = id; q.U*X5 fileAccessI = new FileAccessI(sName,nStartPos);//定位 !4i,%Z&6 } i#Ne'q;T ll 6]W~[ZC EaJDz`T} public void run() ~r{\WZ. { J~M H_N while(nStartPos < nEndPos && !bStop) |;X?">7NW { N:"M&EUM 7AS.)Q#=x Smi%dp. try{ H^]Nmd8Q) URL url = new URL(sURL); Q@ykQ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); L?AM&w-cg9 httpConnection.setRequestProperty("User-Agent","NetFox"); -ryDsq String sProperty = "bytes="+nStartPos+"-"; Tyg$`\# httpConnection.setRequestProperty("RANGE",sProperty); /h1dm, Utility.log(sProperty); 8Pl+yiB/o` w++B-_ pjaiAe!k InputStream input = httpConnection.getInputStream(); Tz+HIUIxF //logResponseHead(httpConnection); $,xtif0 -[i40
1 h[Ndtq>3{ byte[] b = new byte[1024]; 2V#c[%vI int nRead; d08`42Z69 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) Tb5$ { r\4*\ nStartPos += fileAccessI.write(b,0,nRead); OL,/-;z6 //if(nThreadID == 1) !C9ps]6 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); $]Q*E4(kV9 } .rt8]% !:]s M-cCt >!:$@!6L Utility.log("Thread " + nThreadID + " is over!"); 2GHXn:V bDownOver = true; i*mZi4URN //nPos = fileAccessI.write (b,0,nRead);
'7S!6kd? } 34/]m/2NZK catch(Exception e){e.printStackTrace ();} lGD%R'} } HPu/. oE } krEH`f L:|X/c9r[ EqNz L*E //打印回应的头信息 ]Ct`4pA public void logResponseHead(HttpURLConnection con) =
]dz1~/ { Q#yu( for(int i=1;;i++) 0})7of { xI.Orpw String header=con.getHeaderFieldKey(i); 4?P%M"\Iv if(header!=null) Fi?U)T+%+ //responseHeaders.put(header,httpConnection.getHeaderField(header)); lp37irI: Utility.log(header+" : "+con.getHeaderField(header)); JLFFh!J else J};u25:} break; A{DIp+ } WI*^+E&=* } c%xED%X9 F]URf&U t z
+ public void splitterStop() wHBHkz { CrRQPgl+u bStop = true; 60U{ e}Mkb } !0!P.Q8>& i/C
-{+}U zR3lX}g } PMz{8
F []6ShcqJ[v r?Zy-yQ /* C{d8~6 **FileAccess.java `g4Ekp'Rp[ *//文件访问(定位,写) pQ[o3p!&9 package NetFox; !_^{udB} import java.io.*; v;N1' @&i#S}%/ +[X.-,yW public class FileAccessI implements Serializable{ a `[?,W:q |2t7G9[n //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 VrAXOUJw6 RandomAccessFile oSavedFile; 0,"n-5Im long nPos; u@:=qd=\ c1)BGy li OTNZ!U/)j public FileAccessI() throws IOException Hz!U_? { qJbhPY8Ak this("",0); [i<$ZP } 8a":[Q[ f2R+5`$ -Z/6;2Q public FileAccessI(String sName,long nPos) throws IOException c|R3,<Q] { `/gEKrhL- oSavedFile = new RandomAccessFile(sName,"rw"); BW;=i. this.nPos = nPos; (TbB?X} oSavedFile.seek(nPos); ||*&g2Y } A^= Hu,"e U:pLnNp` fRv
S@ public synchronized int write(byte[] b,int nStart,int nLen) :)
Fp
B" { YQB]t=Ha int n = -1; QJ(e*/ try{ YfrTvKX oSavedFile.write(b,nStart,nLen); 4? /ot;>2 n = nLen; ~'Qpf 8) } ^%4(
%68 catch(IOException e) 5wE !_ng>| { &ESR1$)'P e.printStackTrace (); @LkW_ } ![X.% ]Nd'%M tx|"v|&e2 return n; mAYr<= } X"qbB4(I 6%ti B? oRvm*"8B } x#}j3"
PP 2U+z~ :+gCO!9Y /* q*<J$PI **SiteInfoBean.java MSYLkQ}_b */ eqUn8<<s package NetFox; Z>MJ0J76]
$V {- @= T0np<l]A public class SiteInfoBean { w'!}(Z5X? [r~rIb%Zj \3y=0 private String sSiteURL; //Site's URL *C:q _/ private String sFilePath; //Saved File's Path 6!Tf'#TV~! private String sFileName; //Saved File's Name Lct+cKKU private int nSplitter; //Count of Splited Downloading File x1hs19s CgT QGJ}- /kviO@jm4( public SiteInfoBean() E{k%d39> {//nSplitter的缺省值为5 g)r,q&* //default value of nSplitter is 5 ~_ l:b this("","","",5); P".qL5 } -)->Jx:{ l`5}i|4KTW \Dsl7s= public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) i]^*J1a { E<m"en&v sSiteURL= sURL; -"JE-n sFilePath = sPath; n4d(` sFileName = sName; Z]> e & N this.nSplitter = nSpiltter; .D2ub/er 0 *Yivx6 |#khwH } Nno={i1jk *}WqYqOow s)&R W#:X public String getSSiteURL() {*]=qSz { '?!<I return sSiteURL; *.;}OX^X } Y @ ,e ])ZJ1QL1 BKjPmrZ| public void setSSiteURL(String value) ewff(e9 { 2Z1(J% 7 sSiteURL = value; K
v># } z )}wo3 8'_
]gfF VTX'f2\ public String getSFilePath() ,vY
I
O { u #QSa$P return sFilePath; [?r\b } ?Kz`
O>"6 6`$z*C2{ FVLA^$5c public void setSFilePath(String value) x?k |i}Q { bA9dbe sFilePath = value; w!Lb;4x ? } nOoh2jUM E=U^T/ ^~kFC/tQ public String getSFileName() "@<g'T0 { /)<7$ return sFileName; 0BwQ!B. } 9lwo/(s 6nk|*HPz JC?V].) y5 public void setSFileName(String value) *q9$SDm { )da8Ru sFileName = value; !m.')\4< } 2!& ;ZcT, K0!#l Br C&K(({5O public int getNSplitter() E]Gq!fA&< { ;0}"2aGY return nSplitter; Z"8cGN' } 2OOj8JS y]z# ?? B!C32~[ public void setNSplitter(int nCount) 3G0\i!*t { [8g\pPQ nSplitter = nCount; !~DkA7i 55 } i*rv_G|(Zj } +( 7vmC. KE1@z] ]tV{#iIJ* /* *xN jhR]7v **Utility.java HDG"a&$
*/ FQ&VM6_ package NetFox; SxQDqoA~ ;@\JscNJ| x~,?Zj)n?C public class Utility { ll^O+>1dO e/I{N0SR o~N-x* public Utility() `)_FO]m}jS { 6E%k{ r .:Xe* Q ?fwr:aP~ } t-{OP?cE1
jS)-COk //线程睡眠 )n61IqrW public static void sleep(int nSecond) c^UM(bW { Tfs9<k>G# try{ j[
YTg] Thread.sleep(nSecond); 9_^V1+
} 78A4n C catch(Exception e) $w}aX0dK& { %ieAY-<" e.printStackTrace (); q:eAL'OkM } JugQ +0 } F#9KMu<<cI l@9:VhU( //日志 _E-GHj>k
z public static void log(String sMsg) SQCuY<mD { E0'6 !9y System.err.println(sMsg); ::t!W7W } PU\q.y0R #.K&]OV/88 PltPIu)F public static void log(int sMsg) uB9+E%jOdQ { G!Q)?N System.err.println(sMsg); {i?K~|
h } a .Vs>1 } ITOGD ? 7dDQI7^( RLr-xg$K-t /* dz DssAHy **TestMethod.java .j,&/y& */ >@\-m package NetFox; 2 z l 4}b:..Ku +DDvM;31w public class TestMethod { 6H9]]Unju [IW7]Fv<F dv>zK#! public TestMethod() p_N=V. w { ///xx/weblogic60b2_win.exe ozr+6z try{ sVf7g? SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); r F-yD1 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); .5zJ bZ9 SiteFileFetch fileFetch = new SiteFileFetch(bean); ;]e"bX fileFetch.start(); V)@scB|>, } N($]))~3& catch(Exception e){e.printStackTrace ();} =sJHnWL[ [C#pMLp,~ =1uI >[aN } Np)!23 " {RO=4ba{J &}?e:PEy public static void main(String[] args) nhxl# { l#:Q V: new TestMethod(); r#}%sof } mcracj[B } Q?q
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