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/* CHdw>/5 **SiteFileFetch.java +DF<o
U~ */ F@ZG| &
package NetFox; j~\\,fl= import java.io.*; C]WVH\Pp import java.net.*; 7Hf6$2Wh GL@s~_;T6 lDe9EJR public class SiteFileFetch extends Thread { L
FHyiIO To]WCFp6@ -gu)d5b SiteInfoBean siteInfoBean = null; //文件信息Bean KFAB long[] nStartPos; //开始位置 R{#-IH=" long[] nEndPos; //结束位置 k|BY 7C FileSplitterFetch[] fileSplitterFetch; //子线程对象 r4J4|&ym long nFileLength; //文件长度 pP{b!1 boolean bFirst = true; //是否第一次取文件 01H3@0Q6 boolean bStop = false; //停止标志 bLCr h(< File tmpFile; //文件下载的临时信息 6:v8J1G(< DataOutputStream output; //输出到文件的输出流 OA%.>^yb@ 5iG|C ~ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) IhM-a
Y
y5 public SiteFileFetch(SiteInfoBean bean) throws IOException ;r49H<z { `WWf?g siteInfoBean = bean; *%B%BJnX //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); p&Nw:S tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); &|9mM=^ if(tmpFile.exists ()) aFyNm@a { {4}Sl^kn* bFirst = false; dXe763~< read_nPos(); [DGq{(O } T1n GBl\( else N#T MU { *aG0p&n} nStartPos = new long[bean.getNSplitter()]; `q$DNOrS nEndPos = new long[bean.getNSplitter()]; +Tq
_n@ } Q=uwmg86 n[ba jVfC 4M7 , Qf=%%5+?8 } (&njZdcb* lFc3 5 X 8[T*L. public void run() 2cy{d|c { _r^&.'q //获得文件长度 laFkOQI //分割文件 /Zm@.%. //实例FileSplitterFetch :Bn\1\ //启动FileSplitterFetch线程 |d{(&s} //等待子线程返回 ^.-P]I] try{ 9F,jvCM63 if(bFirst) Nk=M { i"_f46rP nFileLength = getFileSize(); _10#rucr if(nFileLength == -1) ]}'WNy6c&x { J~c]9t System.err.println("File Length is not known!"); j$8~M } )dlt$VX else if(nFileLength == -2) hp>me*vzr { L G=Q System.err.println("File is not access!"); Aq";z.gi+ } %/sf#8^m else :!r_dmJ { E~N}m7kTl/ for(int i=0;i<nStartPos.length;i++) L[O+9Yh { B*?v`6 nStartPos = (long)(i*(nFileLength/nStartPos.length)); ){ wE)NN } } O!LTD for(int i=0;i<nEndPos.length-1;i++) RS$:]hxd>_ { l'o'q7&=z nEndPos = nStartPos[i+1]; )IhI~,0Nmj } t`Hwq nEndPos[nEndPos.length-1] = nFileLength; g4-HUc zk } !5{t1 oJ } C\fc 4 .m+KXlP 8{h:z
9]J //启动子线程 P/ug' fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; *.Kc-f4mP for(int i=0;i<nStartPos.length;i++) m >'o&Hj { -5E%f|U fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), .}z&$:U9[ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), *8MU,6 nStartPos,nEndPos,i); &&t4G }* Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Zcf?4{Kd?
fileSplitterFetch.start(); fe&K2C%bm } 1Z*-@%RX // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), r,0> 40^ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); }_Jai4O // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", C' ny 2>uA nEndPos = " + nFileLength); 3+(Fq5I // fileSplitterFetch[nPos.length-1].start(); ;O.U-s s%p(_pB g*!2.P //等待子线程结束 3Vt-]DGX //int count = 0; 7@C:4c@0 //是否结束while循环 V!~uGf boolean breakWhile = false; 8$@gAlI^ x{IOn;>R [}+
MZ while(!bStop) ("IRv>} 0 { 9jJ&QACn
write_nPos(); b vUYLWzS Utility.sleep(500); Y[*z6gP( breakWhile = true; ~|fd=E% |-2,k#| >#xpg&2x for(int i=0;i<nStartPos.length;i++) .D>%- { GHH1jJ_[7 if(!fileSplitterFetch.bDownOver) @hg1&pfxZ< { nh,N(t9 breakWhile = false; 7GE.>h5 break; MW`q*J`Yo } X}g!Lp } ^d4# if(breakWhile) 5C2 *f4| break; /Nb&e .4.zy]I =>/aM7] //count++; !QP~#a% //if(count>4) ])T*T$u // siteStop(); O@??
NF6G } mp!6MO Q yO$]9 +9,"ne1'e System.err.println("文件下载结束!"); 64`V+Hd } 8?P@<Do% catch(Exception e){e.printStackTrace ();} iK'bV<V&7 } k`kmmb> -F@Rpfrj_# s+o/:rrxY //获得文件长度 6z!?U:bT public long getFileSize() uppA`> { 9LzQp`In int nFileLength = -1; #![b9~%WTh try{ 0|P RCq URL url = new URL(siteInfoBean.getSSiteURL()); rhwY5FD? HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); -=O9D-x= httpConnection.setRequestProperty("User-Agent","NetFox"); o#H"tYP 'mG[#M/Y ~h tV*R int responseCode=httpConnection.getResponseCode(); /dhw~| if(responseCode>=400)
8X[G)J; { :Uj+iYE8Z8 processErrorCode(responseCode); B k#68p return -2; //-2 represent access is error w/E4wp } jZ7#xRt5w doVBV Tk^ Gb~*[ String sHeader; 69TQHJ[ M*}C.E! *ZF7m_8u{ for(int i=1;;i++) "JKrbgN@;L { =H3 JRRS //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); v8Bi 1,g //Utility.log(in.readLine()); 2*F["E sHeader=httpConnection.getHeaderFieldKey(i); aKkQXq* if(sHeader!=null) F+v? 2|03 { wT3QSJ if(sHeader.equals("Content-Length")) _:?)2 NV { \y"!`.E7\d nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); i~ PN(h break; OjJKloy' } MjQKcL4%7 } Uw)?u$+
P else Dwe_ytjpc break; O>lF{yO0` } +_3>T''_ } :|EM1-lwf catch(IOException e){e.printStackTrace ();} E<>n0", catch(Exception e){e.printStackTrace ();} 90Jxn'>^ & 2& K9R v@&&5J| Utility.log(nFileLength); ?9i
7w1` kQRNVdiz pMHY2t return nFileLength; /g< T)$2 } Azxy!gDT" ZUVk~X3
*+vS
f7 //保存下载信息(文件指针位置) / 9/=] private void write_nPos() X48Q{E+ { vA10'Gx' try{ V)^nVD)e output = new DataOutputStream(new FileOutputStream(tmpFile)); jt@k<#h~ output.writeInt(nStartPos.length); RM|<(kq for(int i=0;i<nStartPos.length;i++) ]HgAI$aA, { 5Y"JRWC // output.writeLong(nPos); 7N+No.vR. output.writeLong(fileSplitterFetch.nStartPos); J0~Ha u output.writeLong(fileSplitterFetch.nEndPos); 6!
\a8q'z } T+8F'9i` output.close(); WFocA: } (x2I*<7P catch(IOException e){e.printStackTrace ();} KA#4iu{ catch(Exception e){e.printStackTrace ();} Z,.*!S=?h } Y? =+A4v BI?M/pIm 40<ifz[7 //读取保存的下载信息(文件指针位置) cfyN)#9 private void read_nPos() lY
yt8H { 4E}]> try{ ]O3[Te DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); (y7U}Sb' int nCount = input.readInt(); \::<] nStartPos = new long[nCount]; oIdMDp^$ nEndPos = new long[nCount]; 0.4c|-n for(int i=0;i<nStartPos.length;i++) IKb 7#Ut { v4kk4}lE nStartPos = input.readLong(); &EYO[~D06 nEndPos = input.readLong(); ):E4qlB } / Li?;H input.close(); :(VD<"X } g!(j.xe catch(IOException e){e.printStackTrace ();} ZC'(^liAp catch(Exception e){e.printStackTrace ();} LGGC=;{} } JeU|e$I4> K]yCt~A$ !run3ip`Z private void processErrorCode(int nErrorCode) ?ntyF-n& { NdZv* System.err.println("Error Code : " + nErrorCode); 8q{
%n } Zmw'.hL g|tnYN
~,Ck //停止文件下载 r 'wam]1Z public void siteStop() f8'D{OP"G { *[t@j*al bStop = true; vG`R. for(int i=0;i<nStartPos.length;i++) |f;u5r!^= fileSplitterFetch.splitterStop(); fmILkXKz N1`/~Gi Wg9q_Ql } (E )@@p7,: } NitWIj[U; //负责部分文件的抓取 IFYGl **FileSplitterFetch.java Vi[* a */ vzA)pB~; package NetFox; 9ar+P h@* ]p~w`_3v JK34pm[s import java.io.*; Hz&a~ import java.net.*; e$}x;&c Q //S/pCqED GZ(
W64 public class FileSplitterFetch extends Thread { AAUFX/}8P J@ZIW%5 =[k9{cVW String sURL; //File URL ;dWqMnV long nStartPos; //File Snippet Start Position >'T%=50YH long nEndPos; //File Snippet End Position A|&EI-In int nThreadID; //Thread's ID zyR pHM$E boolean bDownOver = false; //Downing is over f@}( <# boolean bStop = false; //Stop identical wd]Yjr#%Ii FileAccessI fileAccessI = null; //File Access interface PT4`1Oy}/1 p>zE/Pw~ H{XW?O^@ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException CeJ|z{F\ { oD 8-I^ this.sURL = sURL; j>T''Tf this.nStartPos = nStart; hlFU"u_ this.nEndPos = nEnd; -ouJf}#R nThreadID = id; {]\uR-a(o fileAccessI = new FileAccessI(sName,nStartPos);//定位 NB5L{Gf6- } udD*E~1q U.Chf9a- M.:@<S public void run() #/t>}lc { aC yb-P while(nStartPos < nEndPos && !bStop) K-5"# { V> a3V' KPjqw{gR_R 3cfZ!E~^kc try{ |g\. 5IM#W URL url = new URL(sURL); &lh_-@Xz HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); OpbT63@L httpConnection.setRequestProperty("User-Agent","NetFox"); GQ-e$D@SfB String sProperty = "bytes="+nStartPos+"-"; 0Dm`Ek3A7x httpConnection.setRequestProperty("RANGE",sProperty); )_b@~fC Utility.log(sProperty); 2gL[\/s ^dUfTG9{ fteyG$-s InputStream input = httpConnection.getInputStream(); S?nNZW\6[ //logResponseHead(httpConnection); 0J:U\S Ag>>B9 b*FU*)<4. byte[] b = new byte[1024]; :,^>d3k int nRead; !W~<q{VTs while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) R04J3D| { @[v8}D nStartPos += fileAccessI.write(b,0,nRead); ]Uh1l.O //if(nThreadID == 1) )$_,?*fq: // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); gc,Ps } ;RHNRVP F~R7~ZE 4|f}F Utility.log("Thread " + nThreadID + " is over!"); " '[hr$h3 bDownOver = true; 7=3O^=Q^Q //nPos = fileAccessI.write (b,0,nRead); Bm}iU~(Z` } 'Sa!5h catch(Exception e){e.printStackTrace ();} &D*8l?A/1f } u*2JUI* } IN_gF_@% +*.1}r& &h(g$-l?[ //打印回应的头信息 "i%jQL'. public void logResponseHead(HttpURLConnection con) JJ-i_5\q { Noz&noq for(int i=1;;i++) enumK\ { s5AgsMq String header=con.getHeaderFieldKey(i); {:)vwUe{ if(header!=null) 8Zw]f-5x\ //responseHeaders.put(header,httpConnection.getHeaderField(header)); > UWStzH< Utility.log(header+" : "+con.getHeaderField(header)); u>o<tw%Y else +'%\Pr( break; X" \}sl5 } G#lg|# -# } Nb1J ~v <4f,G]UH_ i| 4_m public void splitterStop() >BJ}U_ck { (I~\,[ bStop = true; 9U'[88 } l&|)O6N NjP ]My F.0d4:A+ } 7m]t^^ .YC;zn^ k*Pz&8| /* D$hQyhz' **FileAccess.java qHJ'1~?q *//文件访问(定位,写) g}r^Xzd; package NetFox; ?l9=$' import java.io.*; 50,Y Ut_mrb+W +V1}@6k
: public class FileAccessI implements Serializable{ R,b59,&3/ ^ $wJi9D6 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 {+\'bIV[ RandomAccessFile oSavedFile; `j:M)2:*y long nPos; 0I^Eo| u<kD} Mciq-c) public FileAccessI() throws IOException 6l[G1KkV {
0Ve%.k this("",0); XNlhu^jh } 6F-JK1i ((cb4IX K7Gm-=% public FileAccessI(String sName,long nPos) throws IOException ?[|hGR2L { 6V
P)$h8 oSavedFile = new RandomAccessFile(sName,"rw"); ]738Z/)^ this.nPos = nPos; C#$6O8O oSavedFile.seek(nPos); LfllO } 4Cd#sQ cUs L6y 48k7/w\ public synchronized int write(byte[] b,int nStart,int nLen) (Com, { ^Xa*lR 3 int n = -1; :ol6%Z's try{ WvbEh|y oSavedFile.write(b,nStart,nLen); V Y_f = n = nLen; FF3&Y^+^" } 8sWr\&! catch(IOException e) 6y9C@5p}B { /.2 qWQH e.printStackTrace (); /W0E(8:C) } Oj-r;Tt_G} @`Wt4< `[bJYZBc2 return n; Q ]0r:i=
. } 5y}BCY2=/ 2!idy]vy_ }+_9"YQ: } (FG^UA#' ,m3":{G:t. 7O9n!aJ /* "4RQ`.SR **SiteInfoBean.java H@4/#V|Uy */ Tm\OYYyk package NetFox; iU XM(] !h*B (, ?lyltAxs' public class SiteInfoBean { ^6#-yDZC@ DUhT>,~] VRB~7\A5<) private String sSiteURL; //Site's URL s_v}=C^ private String sFilePath; //Saved File's Path EzUPah private String sFileName; //Saved File's Name W.p66IQwL& private int nSplitter; //Count of Splited Downloading File d9|T=R mQL8QW[c FTbtAlqh< public SiteInfoBean() W%WC(/hor {//nSplitter的缺省值为5 smbUu/ //default value of nSplitter is 5 `T`c@A this("","","",5); @~hz_Nm@8 } x.o3iN[= g&XhQ.aa t+J)dr public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) p8_2y~! { [m
%W:Ez sSiteURL= sURL; tbY SK sFilePath = sPath; E::<;9 sFileName = sName; o:4CI this.nSplitter = nSpiltter; [C2kK *JZ \DaLHC~ P$Axc/H } gn364U a 6Z$b?A3zM sC9-+} public String getSSiteURL() YyG~#6aCh { _m" ^lo return sSiteURL; b6]e4DL:R } XQ4dohGCP
-GK 'V 9W$mDw6f public void setSSiteURL(String value) aam1tm#Q { #.~.UHt sSiteURL = value; vrQFx~ZztH } k -io$ K7+^Yv\YQx )\(lg*?: public String getSFilePath() F>TYVxQ { #%;<FFu\ return sFilePath; dy'X<o^?W } 38<~R g<0w/n!jmC H7y&N5.V public void setSFilePath(String value) Feh"!k <6k { O\3r%=TF sFilePath = value; 5c*p2:] } kbD*=d}3{ 3x,Aczb ?&{S~[;l public String getSFileName() fMgcK$ { Xqc'R5Cw return sFileName; S83]O!w0 } $:xF)E z<FV1niE _-g-'Hr+N public void setSFileName(String value) .LWOM8) { FZM
]o sFileName = value; {yGZc3e1j } !E4E' I=]N 8L%%eM_O Lw!?T(SK public int getNSplitter() %V@R k.< { Q=)"om return nSplitter; a15,'v$O } #L|JkBia MoC*tImWR oHYD_8'f public void setNSplitter(int nCount) MYur3lj%_ { GGFar\
EzW nSplitter = nCount; O('i*o4!} } o06A=4I } qk"oFP6 XhJ P87A yfRUTG /* M6@'9E]|> **Utility.java zsR wF */ k)<~nc- package NetFox; 6qz!M S,d ngb{ [Gh%nsH public class Utility { Wwa41z eG[umv.9b < -@, public Utility() n $D}0wSM/ { 1FXzAc(c! / h2*$ ~T;ajvJ } 3:02`;3 ;f\R$u- //线程睡眠 \'}/&PCkr public static void sleep(int nSecond) 5 b#"
G" { i;uG:,ro try{ >8F{lbEe Thread.sleep(nSecond); FrAqTz } .:r2BgL catch(Exception e) 4N%2w(,+8 { Qw{\sCH> e.printStackTrace (); .SRuyioF& } a|]%/[G@ } l1iF}>F2 *x#&[> //日志 w#gU1yu public static void log(String sMsg) tnKpn-LPA { J _[e9 System.err.println(sMsg); 5qeS|]^` } tc49Ty9$[ hsQ rd%{f cQ8$,fo public static void log(int sMsg) fjK]m.w { B1i!te}* System.err.println(sMsg); 2A18hP`^ } {TxVRpiP{Z } 71n uTE%! O>"r. sR y uK5 r /* Fh!!T%5>C **TestMethod.java I vl^,{4 */ G+QNg.pH package NetFox; G~iYF(:& ym,Ot1 .KwuhmR public class TestMethod { PE6u8ZAb" ,j(p}t - R8!"~o public TestMethod() (J;zk b { ///xx/weblogic60b2_win.exe lWyP[>* try{ )zc8bS SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); gkq RO19 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); "<n"A7e SiteFileFetch fileFetch = new SiteFileFetch(bean); %OfDTs fileFetch.start(); HV.|Eh_7 } ??e#E[bI catch(Exception e){e.printStackTrace ();} c:,{O0 # DRg~HT __zu-!v } &+w!'LSaD 3=L1H ZH F~@1n,[ public static void main(String[] args) =iN_Ug+ { o)'=D( new TestMethod(); ;KZ2L~
THG } WZ
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