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/* l{V(Y$xp3 **SiteFileFetch.java ~)5k%?. */ sO)!}#,
package NetFox; zhU^~4F import java.io.*; .G|U#%"6x import java.net.*; o^u}(wZ{ =E&1e;_xlE e(9K.3@{ public class SiteFileFetch extends Thread { mHNqzdaa ~~#/jULbV C 6d#+ SiteInfoBean siteInfoBean = null; //文件信息Bean ZV[-$ long[] nStartPos; //开始位置 r1sA^2g. long[] nEndPos; //结束位置 XL(2Qk FileSplitterFetch[] fileSplitterFetch; //子线程对象 tz2$j@!= long nFileLength; //文件长度 /q^_
'Lp boolean bFirst = true; //是否第一次取文件 h\8bo= boolean bStop = false; //停止标志 j)}TZx4~ File tmpFile; //文件下载的临时信息 M*F`s&vM DataOutputStream output; //输出到文件的输出流 ' &Nv|v\V $ccCI
\ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) +sXnC\ public SiteFileFetch(SiteInfoBean bean) throws IOException ^k!u { Hlj3z3 siteInfoBean = bean; M2nZ,I=l //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 'A/f>W tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Qe=eer~jI if(tmpFile.exists ()) -i4hJC!3 { Qq\hD@Z| bFirst = false; U"K%ip:Wd read_nPos(); +b{tk=Q: } &9xcP.3 else [8[`V)b { fjS# nStartPos = new long[bean.getNSplitter()]; kFi=^#J{ nEndPos = new long[bean.getNSplitter()]; 8+~'T| } ;5}"2hU> r4 ;nkx "=0JYh)%_ !XY}\zKq } NaeG)u#+ S?Uvt? JwUz4 public void run() QB7^8O!< { S#|5&SR //获得文件长度 m_UzmWF //分割文件 &-|(q!jm //实例FileSplitterFetch a6g+"EcH#' //启动FileSplitterFetch线程 r
D|Bj(X8 //等待子线程返回 AaJz3oncJ try{ 1@`mpm#Y if(bFirst) Fw6x
(j" { pbqJtBBDDS nFileLength = getFileSize(); do@BJWo if(nFileLength == -1) @FuX^Q.[ { _?9|, System.err.println("File Length is not known!"); C6:;
T% } ra{HlB{ else if(nFileLength == -2) >orDw3xC { h>n<5{zqM System.err.println("File is not access!"); xQ8?"K;iX } \eS-wO7% else _({K6adb
{ _^Q =n>G for(int i=0;i<nStartPos.length;i++) 1$uO% { y?V#LW[^E nStartPos = (long)(i*(nFileLength/nStartPos.length)); RZI4N4o } (M,*R
v for(int i=0;i<nEndPos.length-1;i++) u]t#Vf-$u { o&rNM5: nEndPos = nStartPos[i+1]; )n$RHt+:> } zA&]#mc nEndPos[nEndPos.length-1] = nFileLength; WO{9S%ck } h?&S*)1 } ],Y+|uX-> gOn^}%4.I (%|L23 //启动子线程 *iujJi fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ]q@W(\I for(int i=0;i<nStartPos.length;i++) <{A |Xs { qF4pTQf fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), YnX6U1/^ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), I#](mRJ6 nStartPos,nEndPos,i); gz`P~7-w: Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); F0+@FS0 fileSplitterFetch.start(); _<;westq }
c|~f[ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 8Sg:HU\ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); tfq; KR // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", \ dZD2e4 nEndPos = " + nFileLength); qeoj // fileSplitterFetch[nPos.length-1].start(); "z ;ky8 ;O *o GZNfx8zsY+ //等待子线程结束 m*H6\on: //int count = 0; aZYs?b>Gm //是否结束while循环 mX
QVL.P\ boolean breakWhile = false; 5\P3JoH:Yg ~er4w+" di#:KW while(!bStop) NFlrr*=t> { atjrn:X write_nPos(); )\0LxsZ Utility.sleep(500); tU(vt0~b breakWhile = true; EyPF'|Qtn Z<6Fq*I e(sV4Z~ for(int i=0;i<nStartPos.length;i++) ;PG,0R`Z; { xouy|Nn' if(!fileSplitterFetch.bDownOver) <LOas$
{ _;`g*Kx breakWhile = false; ]iVoF N}^ break; Rac4a@hZ } #
>L^W7^ } *heX[D
&>) if(breakWhile) FVS@z5A8<= break; D}:M0EBS +G<9 |- dnUiNs8 //count++; d(j|8/tpA //if(count>4) :ODG]-QF // siteStop(); {w|KWGk2 } B3iU# 9W@Tf 9x9~u8j System.err.println("文件下载结束!"); 9='=wWW } p}R3AJ catch(Exception e){e.printStackTrace ();} qox31pnS } i2+vUl|;Z >6zXr. ]NgEN //获得文件长度 G9i?yd4n=B public long getFileSize() (3M7 RpsL@ { U `<?~Bz int nFileLength = -1; Fl&Z}&5p try{ 6 N.+ URL url = new URL(siteInfoBean.getSSiteURL()); ti^msC8e HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); \LZVazXD httpConnection.setRequestProperty("User-Agent","NetFox"); ^zVBS7`J #-Nc1+gu >@NGX-gp int responseCode=httpConnection.getResponseCode(); ![#>{Q4i if(responseCode>=400) Rt10:9Kz$ { 3"J85V%h]n processErrorCode(responseCode); l\{{iAC]I return -2; //-2 represent access is error -?&s6XA%# } 5 NdIbC iH""dtO A('_.J= String sHeader; O*zF` 9 &fYV FRVkq .kkrU for(int i=1;;i++) KQ(7% W { F-2&P:sjQ //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ' Zmslijf //Utility.log(in.readLine()); b#[7A sHeader=httpConnection.getHeaderFieldKey(i); ~}fQ.F*7R if(sHeader!=null) q-)Ynp4' { ~)&im.Q4 if(sHeader.equals("Content-Length")) N3}jLl/ { zV8^Hxl nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ?h4Rh0rkX break; %1oG<s } $9Yk]~ } 17{$D,P else 4(FEfde= break; jvfQG:F } } QL4BD93v } #b?)fqRJL catch(IOException e){e.printStackTrace ();} 7-Yn8Gq catch(Exception e){e.printStackTrace ();} RY]Vo8 ;_vo2zl1 9:tn!<^=I Utility.log(nFileLength); #fR~7K R o1(?j}:c| (jY -MF3 return nFileLength; HQOz } /Sag_[i Y +9OP j\S}TaH0e //保存下载信息(文件指针位置) };=44E'7 private void write_nPos() CnA0^JX { AT%@T| try{ 4Cdl^4(LT output = new DataOutputStream(new FileOutputStream(tmpFile)); !{,
`h< output.writeInt(nStartPos.length); Htu}M8/4 for(int i=0;i<nStartPos.length;i++) IT\lkF2 { ADQ#qA,/ // output.writeLong(nPos); Q7-d]xJ^ output.writeLong(fileSplitterFetch.nStartPos); x.OCE` output.writeLong(fileSplitterFetch.nEndPos); t$W~X~// } R%Y#vUmBV{ output.close(); ;.<0ln V } $ }D9)&f; catch(IOException e){e.printStackTrace ();} yxt` catch(Exception e){e.printStackTrace ();} CkJ\v%JAW } @3:oo
/; A!&hjV` OAhCW*B //读取保存的下载信息(文件指针位置) bq<DW/ private void read_nPos() >x$.mXX{ { f*}H4H E O try{ jZ8#86/#{ DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 1hQeuG int nCount = input.readInt(); tb@&!a$`? nStartPos = new long[nCount]; .;&1"b8G nEndPos = new long[nCount]; psHW(Z8G for(int i=0;i<nStartPos.length;i++) UFoxv) { tL!R^Tf nStartPos = input.readLong(); C;&44cU/] nEndPos = input.readLong(); /v,H%8S } ~J Xqyw} input.close(); p+F{iMC } s}pn5zMp:8 catch(IOException e){e.printStackTrace ();} ,?Bo
x catch(Exception e){e.printStackTrace ();} ~A5MzrvIO2 } DfNX@gbo !h "6h Jt3]'Nr04@ private void processErrorCode(int nErrorCode) 7fg +WZ { _26~<gU8 System.err.println("Error Code : " + nErrorCode); (KF=v31_m } ]^63n/Twj +4,v.B@ :i4>&4j //停止文件下载 _k,/t10 public void siteStop() 6] ~g*]T { I<'wZJRRa bStop = true; !\0UEC for(int i=0;i<nStartPos.length;i++) l }i
. fileSplitterFetch.splitterStop(); ;c-J)Ky MU ;
L7^ V*m@Rs!)2 } UoLvc~n7 } 0pSqk/ //负责部分文件的抓取 2^}E!(< **FileSplitterFetch.java g)<t=+a */ F|3 =Cl package NetFox; @@,l0/ :CQ-?mT^LA XL/?v"
/ import java.io.*; ~
cKmf] import java.net.*; *)V1Sd#m Z>)(yi9+ 7n-;++a5] public class FileSplitterFetch extends Thread { D=w5Lks P+m{hn~% ~"E@do(" String sURL; //File URL rI\G&OqpP long nStartPos; //File Snippet Start Position HbRDa long nEndPos; //File Snippet End Position ~v2E<S3 int nThreadID; //Thread's ID *20$u% z2 boolean bDownOver = false; //Downing is over j0p'_|)( boolean bStop = false; //Stop identical /e^q>>z FileAccessI fileAccessI = null; //File Access interface ?F@0"qi 6n{`t/ ay\ e#) public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException X\r?g { Jon<?DQj
this.sURL = sURL; m'))prl this.nStartPos = nStart; 1rr\l` this.nEndPos = nEnd; nQ/R,+6h nThreadID = id; q;dg,Om fileAccessI = new FileAccessI(sName,nStartPos);//定位 Pa.D+ } cr{;gP 6R%Ra (p2jigP7a[ public void run() n+Ia@$|m { Oy:;v7 while(nStartPos < nEndPos && !bStop) Y <'T;@ { |U*wMYC Le&SN7I :27GqY,3sK try{ -lKk.Y.}r URL url = new URL(sURL); Jww LAQ5 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ZGUhje! httpConnection.setRequestProperty("User-Agent","NetFox"); j Y>BU& String sProperty = "bytes="+nStartPos+"-"; T}ZUw;}BL httpConnection.setRequestProperty("RANGE",sProperty); g1JBssw&m Utility.log(sProperty); 481SDG[b <P)vx uyt]\zVT InputStream input = httpConnection.getInputStream(); B'( /W@ //logResponseHead(httpConnection); D<=:9 q[l!kC+Eh ~_SoP byte[] b = new byte[1024]; ;naD`([ int nRead; {5tb.{ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) >z'kCv {
~yQby&s nStartPos += fileAccessI.write(b,0,nRead); #HjiE //if(nThreadID == 1) 4{?Djnh // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); lkNaSz[ } %F'*0< }%K)R5C D -Goi-4 Utility.log("Thread " + nThreadID + " is over!"); ? Xb8B5 bDownOver = true; Tw|cg B //nPos = fileAccessI.write (b,0,nRead); M_wqb'= } K:PPZ| catch(Exception e){e.printStackTrace ();} }P8@\2@=T } g4(vgWOW` } a}~Xns biTET|U`$ xZJ
r* //打印回应的头信息 [42vO public void logResponseHead(HttpURLConnection con) t2)S61Vr { S+03aJNN# for(int i=1;;i++) 0'Kbh$LU { 1&S34wJF String header=con.getHeaderFieldKey(i); a1lF8; [ if(header!=null) {ZiZ$itf //responseHeaders.put(header,httpConnection.getHeaderField(header)); qJY'"_Q{ Utility.log(header+" : "+con.getHeaderField(header)); Nqih LUv else =.q
Zgcg break; 9G7lPK } E;[ANy4L } mK!73<p_ 8Vcg30_+ n9.` 5BH7/ public void splitterStop() ?LP&VU1 { >"^H"K/T bStop = true; cVrses^yE } ich\`j[i h?f)Bt}ry H{Zfbb } o.qeF4\d6 x.Sq2rw]V iHKWz)0 /* jD@KG **FileAccess.java
'g<0MOq{ *//文件访问(定位,写) mlolSD;7 package NetFox; d|UK=B^x import java.io.*; F8(6P1}E -p|@En n P
I gbeP public class FileAccessI implements Serializable{ X@$x(Zc ~HbZRDcJc //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 XdKhT61 8G RandomAccessFile oSavedFile; a?]Ow J long nPos; OidF{I*O XWQp-H. k _)H$* public FileAccessI() throws IOException MV"aO@ { F\1{b N|3 this("",0); }nrl2yp:% } n !ty\E V,=V ,U_p6TV5 public FileAccessI(String sName,long nPos) throws IOException :G#>): { -3 } oSavedFile = new RandomAccessFile(sName,"rw"); cC'{+j8-a this.nPos = nPos; pgg4<j_mn oSavedFile.seek(nPos); K8 Y/sHl } ht8%A 1| :cv_G;? PxENLQ3a= public synchronized int write(byte[] b,int nStart,int nLen) Q`#Y_N-h+ { '2+Rb7V int n = -1; i*`; /x'+ try{ oi4tj.!J oSavedFile.write(b,nStart,nLen); *c} MI
e'& n = nLen; D{~mJDUzK } 9o7E/wP catch(IOException e) Rn={:u4 { jBexEdH
e.printStackTrace (); bqmOfGM } {9wBb`.n^ #8.%YG Pyc/6~? return n; I~lX53D } ]m0MbA bg$df 0 `.PZx%= } ax7]>Z=%d" 7T
\}nX1 CrHH Ob /* a}l^+ **SiteInfoBean.java !@E=\Sm8EV */ RH+3x7l package NetFox; 7o?6Pv%HJC fDo )~t*~ ( r_xs public class SiteInfoBean { "7_6iB&@<
yE3g0@* mO$]f4} private String sSiteURL; //Site's URL &E.ckWf private String sFilePath; //Saved File's Path z@hlN3dg private String sFileName; //Saved File's Name Q8.SD p private int nSplitter; //Count of Splited Downloading File Q5'DV!0aSv 6AgevyVG 0tVZvXgTu public SiteInfoBean() =VkbymIZ4y {//nSplitter的缺省值为5 OZdiM&Zss //default value of nSplitter is 5 gf6<`+/ this("","","",5); D 6!`p6r+ } HpI[Af}l mq@2zE`.( @D%H-X public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) Ct[{>asun { ^S*~<0NQ' sSiteURL= sURL; aNgaV$|2a sFilePath = sPath; L1#z'<IO sFileName = sName; (xffU%C^ this.nSplitter = nSpiltter; _uL{@( ffo{4er =\7o@ 38 } -~Kw~RX<( ]Bw2> 6W 0sW=;R2 public String getSSiteURL() OgjSyzc { /5:C$ik return sSiteURL; Sw~jyUEr } xMI4*4y( ,yW BO w4Nm4To public void setSSiteURL(String value) [ h7nOUL! { CSx V^ sSiteURL = value; U1<EAGo| } ]v7f9MC'\ der'<Q.U:k UCzIOxp} public String getSFilePath() S0C
7'H%?# { Y9fktg. return sFilePath; #N\kMJl$l } LU5e!bP !MoJb#B3^] t-gg,ttnA public void setSFilePath(String value) p
b:mw$XQ7 { zSMNk AM sFilePath = value; Ndq|Hkd } ML?%s` e
W&;r&26 gZ6]\l]J{ public String getSFileName() mZsftby} { /Y("Q#Ueq return sFileName; )`?Es8uW } +$M%"=tk qQC<oR
E,,)?^ g public void setSFileName(String value) :eqDEmr> { \"B oTi'2! sFileName = value; Vrl)[st!;I } ;pu68N(B C=L_@{^Rgb =E@wi? public int getNSplitter() t_1a.Jv { k@nx+fO}P return nSplitter; kBYZNjSz } BG!;9Z{u 1SoKnfz{6 L<bZVocOb_ public void setNSplitter(int nCount) Onoi ^MDy { NQzpgf|h nSplitter = nCount; uKF?UXc } Eyu]0+ } "TB4w2?= +-~hl ],vUW#6$N /* 6B
4Sd **Utility.java >}{'{
Z
& */ g'G% BX package NetFox; !<\"XxK+l @cNBY7= Cw1Jl5OVZ public class Utility { wWs<{ T 't".~H_V *oLAO/)n public Utility() {B$cd?} { gAt[kW< n gIv :<EJ9 [v$_BS#u^3 } J~7E8 v%c r //线程睡眠 O8#}2 public static void sleep(int nSecond) ZC+F*:$ { g7!P| try{ <1#v}epD# Thread.sleep(nSecond); 1.WdxMpW9 } c$aTl9e catch(Exception e) (3YqM7cqt { F#S^Q` e.printStackTrace (); udxLHs } J{8_4s!Xt> } 0&$+ CWSM R=ddQ:W6g //日志 P~nI6/r1 public static void log(String sMsg) ]eA< { (XYYbP System.err.println(sMsg); seWYY $$ } 2Wz/s 0` NQefrof 3vTX2e.w public static void log(int sMsg) IE*GF27n { '@'~_BBZP System.err.println(sMsg); \z!*)v/{- } is&A_C7yg } s6<`#KFAg UEmNT9V S^|Uzc /* Y~]E6'Bz **TestMethod.java 3f9J!B`n */ cQDn_Sjhi package NetFox; a x1 )2T?Z)"hO V~-<VM6 public class TestMethod { hY=#_r8 "orZje9AC cQEK>aAd public TestMethod() AP.WTFf { ///xx/weblogic60b2_win.exe %0 (,f try{ j~!0n[F SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 3c] oU1GfF //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 'T@K$xL8 SiteFileFetch fileFetch = new SiteFileFetch(bean); \wR bhN fileFetch.start(); CU)'x
E } !
7,rz1s73 catch(Exception e){e.printStackTrace ();} Th,15H
DA v
P8.{$ zp[Uh]-dMK } `-!t 8BH F`,XB[}2 'c[4-m3bg public static void main(String[] args) l
+RT>jAmK { J<dr x_gc new TestMethod(); -+4:}
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