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/* Qo4]_,kR **SiteFileFetch.java }JeGjpAcV */ ;ug&v
C package NetFox; T4]/w|?G import java.io.*; P6u9Ngay import java.net.*; T&oY:1D,g 5k)QjZo a:r8Jzr public class SiteFileFetch extends Thread { f-F+Y`P V:fz =ps3=D SiteInfoBean siteInfoBean = null; //文件信息Bean 9.{u2a\ long[] nStartPos; //开始位置 9E'fM long[] nEndPos; //结束位置 P(l$5x]g, FileSplitterFetch[] fileSplitterFetch; //子线程对象 B5GT^DaT long nFileLength; //文件长度 JF!JY( U, boolean bFirst = true; //是否第一次取文件 yS^";$2Tc boolean bStop = false; //停止标志 mKugb_d? File tmpFile; //文件下载的临时信息 oM G8?p DataOutputStream output; //输出到文件的输出流 R9A8)dDz ]i(tou-[i //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) '-oS=OrZ public SiteFileFetch(SiteInfoBean bean) throws IOException :.e`w#$7 { N7Kq$G2O siteInfoBean = bean; 9]< p //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); i,r O3Jn tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); z#ab
V1
Xi if(tmpFile.exists ()) VCSHq&p8 { {F6>XuS=u bFirst = false; twv|,kM read_nPos(); 48hu=,)81* } =iW!Mq else Ebw1 %W KC { $N'AZY]4] nStartPos = new long[bean.getNSplitter()]; cXU8}>qY7 nEndPos = new long[bean.getNSplitter()]; w#vSZbh } Uy2NZ%rnt "(zvI>A )h6hN"#V5 g HdNqOy
c } UCG8=+t5T e/Wrm^]y Ydm0 public void run() jd8`D6|Z { f4UnLig //获得文件长度 *oopdGue //分割文件 ZUePHI-dP //实例FileSplitterFetch UF0W%Z //启动FileSplitterFetch线程 ,n<t':- //等待子线程返回 'n4Ro|kA try{ s~
||Vv! if(bFirst) nr7#}pzo { 1/X@~ nFileLength = getFileSize(); r<VZEbm) if(nFileLength == -1) Oxo?\
:T { fFDI qX System.err.println("File Length is not known!"); O'm><a>8 } O<7Q>m else if(nFileLength == -2) YXz*B5R { K.) ionb System.err.println("File is not access!"); uu ahR } =^8*]/k else 5&?[Vt { x\PZ.o for(int i=0;i<nStartPos.length;i++) %LyZaU_sB { <7'`N\a nStartPos = (long)(i*(nFileLength/nStartPos.length)); a%| I'r } FvYgp bEZ for(int i=0;i<nEndPos.length-1;i++) ~tK4C | { Hdvtgss! nEndPos = nStartPos[i+1]; HYcLXh vgu } o>WB,i^ G nEndPos[nEndPos.length-1] = nFileLength; <Qg).n>;z } 8(-V pU } ffoL]u\ <A|X4; 3y^PKIIrt //启动子线程 %Ms"LoK fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; X$*MxMNs for(int i=0;i<nStartPos.length;i++) Pq\
`0/4_ { kY>jp@wV fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), mzw`{Oy>L siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), e&~vO| 3w% nStartPos,nEndPos,i); ]oT8H?%*Y Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Dzd[<Qln fileSplitterFetch.start(); n/W@H Im# } [|iWLPO1&k // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), -R%T Dx siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); J)7\k$ D // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", p7{2/mj nEndPos = " + nFileLength); pK` 1pfih // fileSplitterFetch[nPos.length-1].start(); WX"iDz. r<'ni G47(LE"2b //等待子线程结束 !8g419Yg //int count = 0; hcn$uyP //是否结束while循环 ?^Gi;d5 boolean breakWhile = false; ,+w9_Gy2H -e_91WI *Bfo"["0. while(!bStop) cp1-eR_& { /80H.|8O write_nPos(); ]MD,{T9l\> Utility.sleep(500); zM+4<k_dH] breakWhile = true; LZ#=Ks pbCj
^ { 6
#Qm7s- for(int i=0;i<nStartPos.length;i++) -VZn`6%s { jY;T:C-T if(!fileSplitterFetch.bDownOver) Wd`*<+t] { cNbH:r"Ay breakWhile = false; oW}nr<G{< break; } 6 ,m2u } n[S-bzU^t } \;XDPC j if(breakWhile) VSx9aVPkC break; Q};n%&n& fe!eZiE '/OcJVSR //count++; @h&:xA56 //if(count>4) epicY // siteStop(); }b5omHUE% } y^!>'cdV YD3jP}Ym QhhL_vP System.err.println("文件下载结束!"); GB%kxtGD;\ } ,NO2{Ha$ catch(Exception e){e.printStackTrace ();} n;@.eC,T/ } Hs:0j$ mXY G^} !hs33@*u~ //获得文件长度 2jf73$F public long getFileSize() L<XAvg { p<
Y-b,& int nFileLength = -1; o3"Nxq"U try{ (]E0fjk URL url = new URL(siteInfoBean.getSSiteURL()); #fYRsVQ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); K`=9"v'f+ httpConnection.setRequestProperty("User-Agent","NetFox"); HVJqDF &\>=4)HB; {MRXKnm;e int responseCode=httpConnection.getResponseCode(); zRU9Q2Y if(responseCode>=400) d*YVk{s7V { {+~ JTrp processErrorCode(responseCode); '[Sm w'n6- return -2; //-2 represent access is error |}7!'f\M } ]'NL-8x"> nt&"?
/s 57fl<IM String sHeader; 4wMZNa<Sx y
Nc@K| ?gsPHP US for(int i=1;;i++) j.&Y'C7GOC { KuRJo] //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); /7 8zs- //Utility.log(in.readLine()); ;J@U){R sHeader=httpConnection.getHeaderFieldKey(i); XS}-@5TI if(sHeader!=null) 216`rQ}z { )x,/+R]{8l if(sHeader.equals("Content-Length")) 2tb+3K1 { {RGQX"k nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 7lx"
X0w*m break; {Gr"lOi*@ } hgj ]Jr } 0 <E2^ else eB&.keO
break; qfkdQ/fP } y7t'I.E[+ } 2 \<u;9 catch(IOException e){e.printStackTrace ();} BM~6P|&qD catch(Exception e){e.printStackTrace ();} *@ { ?8do4gT+1 ECyG$j0 Utility.log(nFileLength); _l"=#i@L rB|1<jR pO/vD~C> return nFileLength; ~<.{z]*O } /-knqv k|czQ"vaI y|0!sNg //保存下载信息(文件指针位置) <vE|QxpR private void write_nPos() yH(3 m# { q@G}Hjn try{ xHCdtloi?I output = new DataOutputStream(new FileOutputStream(tmpFile)); B"sB0NuT/$ output.writeInt(nStartPos.length); AdpJ4}|0 for(int i=0;i<nStartPos.length;i++) gg/ts]$ { YQ@2p?4m // output.writeLong(nPos); p"FWAC! output.writeLong(fileSplitterFetch.nStartPos); EKD#s,(V*X output.writeLong(fileSplitterFetch.nEndPos); v, CWE } xk output.close(); `W >Sss } TCFr-*x catch(IOException e){e.printStackTrace ();} ;PB_@Zg catch(Exception e){e.printStackTrace ();} +1a3^A\ } P5H_iH ]h#QA; m^\&v0 //读取保存的下载信息(文件指针位置) <-mhz`^ private void read_nPos() Y_}_)nE@m { G!`PP try{ 9[`c"Pd DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Lu~E5 , int nCount = input.readInt(); d-C%R9 nStartPos = new long[nCount]; ;[79Ewd#$ nEndPos = new long[nCount]; joDqv,iW8 for(int i=0;i<nStartPos.length;i++) `M*jrkM]x { gKY6S? nStartPos = input.readLong(); yM}3u4FG nEndPos = input.readLong(); KYZ#.f@ } ]61Si~Z input.close(); _R(9O?;q } Yi]`"\ catch(IOException e){e.printStackTrace ();} 5A$,'%d catch(Exception e){e.printStackTrace ();} j7^A%9 } t-5K
dLB H|0-Al.{ eIEL';N6 private void processErrorCode(int nErrorCode) W':b6}? { @U4hq7xzV2 System.err.println("Error Code : " + nErrorCode); l[]cUE } )"?eug}D d&+0JI< ?K;l 5$?% //停止文件下载 jU kxA7 }} public void siteStop() Yg?BcY\ { tUuARo7# bStop = true; Y]*&\Ex"\ for(int i=0;i<nStartPos.length;i++) j/_&]6! fileSplitterFetch.splitterStop(); \4LTViY] Fg 8lX9L (c&%1bJ } IBvn
q8\ } S8B?uU //负责部分文件的抓取 ?E_;[(Mcr **FileSplitterFetch.java nbB*d@" */ "G-h8IN^O package NetFox; kxN
O9w 7AS_Aw1L 98)C
7N' import java.io.*; MRw4?HqB import java.net.*; B;F~6i :h |]j[2p |V4<eF-0S public class FileSplitterFetch extends Thread { w[D]\>QHa p!~1~q6 ZDAW>H< String sURL; //File URL ).IyjHY long nStartPos; //File Snippet Start Position ~#4FL<W long nEndPos; //File Snippet End Position 8MI8~ int nThreadID; //Thread's ID Mo<q(_ZeRP boolean bDownOver = false; //Downing is over c_CVZR? boolean bStop = false; //Stop identical g~b$WV% FileAccessI fileAccessI = null; //File Access interface Bu&9J(J1 $=Ns7Sbup @tPr\F public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException c{dabzLy { ;BqCjS%`N this.sURL = sURL; n((A:b this.nStartPos = nStart; zfE8=d8U this.nEndPos = nEnd; >MKj~Ud nThreadID = id; k0O5c[j fileAccessI = new FileAccessI(sName,nStartPos);//定位 %LzARTX } P[-do *Ti"8^`6 ]j>`BK>FE public void run() XXhN;-p { n-xdyJD while(nStartPos < nEndPos && !bStop) _'ebXrbZB { #AB5}rPEI 'e' p`* 7i{(,: try{ *Ow2,{Nn URL url = new URL(sURL); W;cYg.W2 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); tk*-Cx?_ httpConnection.setRequestProperty("User-Agent","NetFox"); +t%2V? String sProperty = "bytes="+nStartPos+"-"; ;9WUt,R httpConnection.setRequestProperty("RANGE",sProperty); W7b
m}JHn Utility.log(sProperty); $2}#):` JB].ht :\qapFV InputStream input = httpConnection.getInputStream(); \o/eF& //logResponseHead(httpConnection); M2w'cdHk 9&uf
09anQHa byte[] b = new byte[1024]; \>pm (gF int nRead; QK#wsw while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) nw%9Qw { p/RT*?< nStartPos += fileAccessI.write(b,0,nRead); OA=~i/n~ //if(nThreadID == 1) (xN1?qXB. // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 2_)UHTwsK } 9M3"'^ {$ DpvHIE:W d"miPR Utility.log("Thread " + nThreadID + " is over!"); z'$1$~I bDownOver = true; rD4umWi //nPos = fileAccessI.write (b,0,nRead); "f_qG2A{ } K)wWqC. catch(Exception e){e.printStackTrace ();} TEY~E*=}$ } X ?[ )e } CYQ)'v G%: 3.:E" kyvl>I0q@ //打印回应的头信息 GVJ||0D public void logResponseHead(HttpURLConnection con) ]uypi#[ { (DY[OIHI for(int i=1;;i++) Xpn\TD<_I { [2Zy~`*y{ String header=con.getHeaderFieldKey(i); 0QW=2rs if(header!=null) wiZ //responseHeaders.put(header,httpConnection.getHeaderField(header)); S}
OO) Utility.log(header+" : "+con.getHeaderField(header)); 2vLun
else 72"H#dy%U break; ;h+~xxu=X } [RN]?, } 5|*`} ;/y N'9T*&o+ z8awND public void splitterStop() ;*<R~HJt { C$PS@4'U bStop = true; 'UWkJ2:! } tkcs6uy oC49c~`8 jF0"AA } RPgz"- J](NCD S<Gm*$[7 /* CN:T$ f|) **FileAccess.java ^ex\S8j *//文件访问(定位,写) Z s=A<[ package NetFox; NT.#U?9c import java.io.*; &xN+a{& &`v?oN9$ UAhWJ$(C public class FileAccessI implements Serializable{ kl.; E{PL ;]Q6K9.d8 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 'WE"$1 RandomAccessFile oSavedFile; CAC4A long nPos; 3MNM<Ih "W%YsN0 A|
A#|D public FileAccessI() throws IOException wV==sV { C&H'?0Y@ this("",0); Fy Ih\ } J'|=J
jb&MC2 y<
*-& public FileAccessI(String sName,long nPos) throws IOException A8vd@0 { FUI*nkZY oSavedFile = new RandomAccessFile(sName,"rw"); b;UDgq8v this.nPos = nPos; pN5kcvQ oSavedFile.seek(nPos); HS{Vohy > } N=<`|I |_TI/i>?' px K&aY8 public synchronized int write(byte[] b,int nStart,int nLen) "nu]3zcd { sb{K%xi% int n = -1; zG6l8%q'UE try{ !9_(y~g{N oSavedFile.write(b,nStart,nLen); I@ueeDY n = nLen; 'Y)aGH( } yj&GJuNb~ catch(IOException e) cZ:jht { XlU\D}zS e.printStackTrace (); "Esl I } K$h\<_V y'!OA+ob n>q!m@ }< return n; %T]^,y$n } K9k!P8Rd Q*>)W{H&) x5Lbe5/P } 37zBX~ :,JaOn' 3Xu|hkK\e /* ]E<Z5G1HD **SiteInfoBean.java yqq1 a
o */ O68-G
package NetFox; JpfA+r >[;@
[4} 5;0w({1l public class SiteInfoBean { B-C$>H^ `-pwP baII!ks private String sSiteURL; //Site's URL hYkkr& private String sFilePath; //Saved File's Path =Z:]% private String sFileName; //Saved File's Name Mc@9ivwL# private int nSplitter; //Count of Splited Downloading File JfN5#+_i !t23
_b0 ,]2?S5R public SiteInfoBean() bzNnEH`^] {//nSplitter的缺省值为5 ?`U_|Yo //default value of nSplitter is 5 xOe1v9< this("","","",5); UGO;5! } XMI*obS'z
]LC4rS hI86WP9* public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) F0U %m { }MRgNr'k sSiteURL= sURL; >6o <Q sFilePath = sPath; Qt+D ,X sFileName = sName; larv6ncV this.nSplitter = nSpiltter; Dz~0( -pYmM d, Ea@0>_U| } f1_; da
pRobx L K#A public String getSSiteURL() o7!A(Eu { 8IlUbj return sSiteURL; $?PI>9g! } ?l9sj]^w XZ
|L D# :.+w'SEn4M public void setSSiteURL(String value) {:gx*4}q8 { 1YV1Xnn, sSiteURL = value; 6m;>R%S_ } *m"9F'(Sd 9xK>fM&u @n)?=[p public String getSFilePath() / 3N2?zS{ { {S=<(A@ return sFilePath; uQO5GDuK> } m0bxVV^DK! r*`e%`HU @GKDSS4jv public void setSFilePath(String value) SiaNL: { *B|hRZka1A sFilePath = value; qB$-H' j:; } s1 >8uW |URfw5Hm %" H:z public String getSFileName() FFw(`[A_ { +yO) 3 return sFileName; Wa^Wn +r } #'&-S@/nQs -w"I o!BCR: public void setSFileName(String value) &s`)_P[ { bPFGQlmIO sFileName = value; B9"o Ru^} } HKJCiQ|k 5_!L"sJ \7LL neq public int getNSplitter() jv~#'=T' { F `:Q return nSplitter; bra2xHK@ } ,h^6y :(~<BiqR( nN{DO:_o public void setNSplitter(int nCount) RkG?R3e { P}Ig6^[m\ nSplitter = nCount; w]gLd } E^rBs2;9 } bKS/T^UQ EcHZmf I'P|:XKI /* _K9PA[m5~ **Utility.java 3J"`mQ */ uN<=v&]q package NetFox; (>0`e8v! KcV"<9rE z#Jw?K_ public class Utility { l5w^rj k$%{w\?Jf #eKKH]J/ public Utility() a^&"gGg { }`
3- \5}PF+)| ;b [>{Q; } =r/K#hOR\J 6E) T;R(@ //线程睡眠 co\?SgE35 public static void sleep(int nSecond) TYuP
EVEXZ { ph6/+[: try{ |gA@$1+} Thread.sleep(nSecond); 9q?knMt } 5]*lH t catch(Exception e) bq7+l4CGTv { ]xvhUv!G e.printStackTrace (); YTTy6*\,_ } E4Q`)6]0 } uO1^Q;F Tr;.%/4Q //日志 "-S!^h/v public static void log(String sMsg) h:Gs9]Lvtv { =&pR=vl System.err.println(sMsg); DH\Ox>b= } 9'p| [?]v aN"YEL>w LeN }Q public static void log(int sMsg) TgV-U { ?5" >5 0 System.err.println(sMsg); \_.'/<aQ } mL1ZSX
o! } 1R-0b{w[ 6'*6tS [5xm>Y&} /* g s1 **TestMethod.java |6-9vU!LK? */ }%w;@[@L package NetFox; K_U`T;Z\ .nIGs'P $]?pAqU\ public class TestMethod { 27gHgz}} 0*:n<T9 tz65Tn_M public TestMethod() #p=+RTZ< { ///xx/weblogic60b2_win.exe %+/v")8+? try{ 1<x5{/CZ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); e#5WX //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); N/-(~r[ SiteFileFetch fileFetch = new SiteFileFetch(bean); CPa+?__B fileFetch.start(); gm]q<~eMW } ?z)2\D catch(Exception e){e.printStackTrace ();} \Yp"D7:Qi t#M[w|5? ShRMzU } hK4ww"- =:T"naY( P `<TO public static void main(String[] args) ;xTMOuI* { ?}^ y6 new TestMethod(); 9i #,V@ }
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