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/* )1@%!fr **SiteFileFetch.java V6((5o# */ T \- x3i package NetFox; \dE{[^.5 import java.io.*; 1uG)U)y/Q import java.net.*; #r?[@aJ \pTC[Ry1 PU1YR;[Fe public class SiteFileFetch extends Thread { F6Q%<p a 8'TIDu 8f)pf$v` SiteInfoBean siteInfoBean = null; //文件信息Bean fi ~@J` long[] nStartPos; //开始位置 )t7MD( long[] nEndPos; //结束位置 eX}aa0 FileSplitterFetch[] fileSplitterFetch; //子线程对象 '/0e!x/8 long nFileLength; //文件长度 \Zx&J.D boolean bFirst = true; //是否第一次取文件 L2}<2 boolean bStop = false; //停止标志 7 H:y=?X6 File tmpFile; //文件下载的临时信息 f2SJ4"X DataOutputStream output; //输出到文件的输出流 4@<wN \' xE!0p EHd //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) +\&6Zbn public SiteFileFetch(SiteInfoBean bean) throws IOException ~=[5X,Ta { O<,\tZ'N siteInfoBean = bean; @]2aPs} }6 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 'o0o.&/= tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); F9%+7Op^ if(tmpFile.exists ()) xSlgq|8 { zzo93d bFirst = false; `ZM$\Q=: read_nPos(); 8)pL0bg } J9j
@V4 else VnB HQ.C { ;XjXv' nStartPos = new long[bean.getNSplitter()]; _!Tjb^ nEndPos = new long[bean.getNSplitter()]; <Uf`'X\e6 } > mJ`904L 'X6Y!VDd
JgKhrDx Df *<3G } L;{{P7 d=uGB" C|w<mryx public void run() K{@xZ) { sN?Rx} //获得文件长度 3ZyvX]@_ //分割文件 yuJ>xsM //实例FileSplitterFetch '
;nG4+K //启动FileSplitterFetch线程 ;E.f% //等待子线程返回 n$7*L9)(C try{ em )%U if(bFirst) )flm3G2u { U,6sR nFileLength = getFileSize(); ,`YBTU if(nFileLength == -1) \QF0(*!! { !dh:jPpKq System.err.println("File Length is not known!"); Ct~j/. } zOFHdd ,"g else if(nFileLength == -2) A<TYt
M { Yh@2m9 System.err.println("File is not access!"); A8ef=ljM? } k4u/vn`&r else _29wQn@] { "XLtrAu{ for(int i=0;i<nStartPos.length;i++) Yl"CIgt { shy[>\w nStartPos = (long)(i*(nFileLength/nStartPos.length)); U@n5:d= } z\8s |! for(int i=0;i<nEndPos.length-1;i++) 8JF<SQ { >BK/HuS nEndPos = nStartPos[i+1]; kw gLK@@%1 } BYhiP/^ nEndPos[nEndPos.length-1] = nFileLength; x^pt^KR; } N'aq4okoL } ]vs}-go k\j_hu "%a<+D //启动子线程 %,
iAngF' fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 5/h-Hr for(int i=0;i<nStartPos.length;i++) T{`VUS/ { r%ebC fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), OW@)6 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), FeO1%#2<y nStartPos,nEndPos,i); 5jwv! L<n Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); bqA`oRb\ fileSplitterFetch.start(); VmQ' } mTUoFXX[ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), &=n/h5e0t& siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); %xQ'i4` // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 2e-bt@0t nEndPos = " + nFileLength); RjO0*$>h // fileSplitterFetch[nPos.length-1].start(); !7)#aXt& }BL7P-km cZ)mp`^n7 //等待子线程结束 &nI>`Q' //int count = 0; PeqW+Q. //是否结束while循环 3tJfh=r=1 boolean breakWhile = false; q+p}U}L=
k Gr/}&+S S
~fz while(!bStop) =2=rPZw9 { "$o>_+U
write_nPos(); g)TZ/,NQ{ Utility.sleep(500); -OU{99$aS breakWhile = true; o,c}L9nvt B9$f y).Gp 'kY/=*=Q for(int i=0;i<nStartPos.length;i++) |>'N^ { Meep if(!fileSplitterFetch.bDownOver) |K{d5\_ { c?. i;4yh breakWhile = false; 5~jz| T}s break; U] GD6q } "M /Cl|z
} n=F
r v*"Z if(breakWhile) oaPWeM+ break; 5G(dvM-n HQ7g0:-^a> |mHf7gCX //count++; l:JVt`A4? //if(count>4) ;fW~Gb?" // siteStop(); FBB<1( {A } G}+@C] \f(zMP E"S#d&9 System.err.println("文件下载结束!"); ` V [4 } C,$o+q*)W9 catch(Exception e){e.printStackTrace ();} w%iwxo } 2@
9? ~?r +lVA$]d 'xG J;pY //获得文件长度 o 7tUv"Rs public long getFileSize() <rK[ &JlJ { 4'*.3f'bp int nFileLength = -1; 2PRiiL@ try{ +L.D3 URL url = new URL(siteInfoBean.getSSiteURL()); Qox /abC
h HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); V]+y*b.60 httpConnection.setRequestProperty("User-Agent","NetFox"); Y~{<Hs y {Bajil
+PADy8 int responseCode=httpConnection.getResponseCode(); %Y=r5'6l if(responseCode>=400) \ ~+b& { 8OV=;aM?{ processErrorCode(responseCode); vWM&4|Q1~ return -2; //-2 represent access is error 0,0Z!-Y } 'Q :%s A[7H-1- -C~zvP;a String sHeader; kp<Au)u 2YY4 XHQS qpCaW0]7 for(int i=1;;i++) aQ\SV0PI { h%W,O,K/ //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); oQmXKV+[v //Utility.log(in.readLine()); r nr-wUW@ sHeader=httpConnection.getHeaderFieldKey(i); mTWd+mx if(sHeader!=null) T8|?mVv s { #5{xWMp/0 if(sHeader.equals("Content-Length")) %W7%] Z@j { \z FCph4 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); c*E7nc)u break; 0|j44e} } G"-V6CA[ } MD<x{7O12> else n w`rH* break; Y,}h{*9Kd } cNmAr8^} } R13k2jLSQ catch(IOException e){e.printStackTrace ();} JeNX5bXW catch(Exception e){e.printStackTrace ();} /}6y\3h wL3RcXW``e V?"U)Y@Y Utility.log(nFileLength); f"*4R
kG (GL'm[V SG\ /m'F return nFileLength; C R?}* } YLA(hg| s[h;9
I1w ftPhE)i //保存下载信息(文件指针位置) \ctzv``/n private void write_nPos() $!9/s S? { XXA'B{@Y) try{ aZ\Z7( output = new DataOutputStream(new FileOutputStream(tmpFile)); p"~@q} 3 output.writeInt(nStartPos.length); Vq`/]& for(int i=0;i<nStartPos.length;i++) +2 oZML { cl&?'`
) // output.writeLong(nPos); ~uZ9%UB_m output.writeLong(fileSplitterFetch.nStartPos); _xi&%F/ output.writeLong(fileSplitterFetch.nEndPos); j#P4& } OAW_c.)5D output.close(); oPa oQbR(A } vf<Dqy <M. catch(IOException e){e.printStackTrace ();} rKslgZhQ catch(Exception e){e.printStackTrace ();} hrzxc4,W } >yT1oD0+x ^q/^.Gf ,P`G IGvkA //读取保存的下载信息(文件指针位置) ^b|? ?9& private void read_nPos() +MaEet { GeB&S!F try{ .-&
=\}^2l DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Et-|[ eL int nCount = input.readInt(); ps,Kj3^T< nStartPos = new long[nCount]; zZRLFfz<9 nEndPos = new long[nCount]; tB`"gC~ for(int i=0;i<nStartPos.length;i++) Viw,YkC { <b_K*]Z nStartPos = input.readLong();
2~g-k3 nEndPos = input.readLong(); F-ofR]|)> } 4f8XO"k7t= input.close(); y $uq`FW } b`S9#` catch(IOException e){e.printStackTrace ();} iWr
#H catch(Exception e){e.printStackTrace ();} /c-k{5mH% } L?0IUGY +`Nu0y!rj <[}zw!z private void processErrorCode(int nErrorCode) yY49JZ { h;r^9g System.err.println("Error Code : " + nErrorCode); G,Eh8HboK } &Fuk+Cu{ Zj ` ;IYFG 5MCgmF*Y2 //停止文件下载 <_eEpG}9 public void siteStop() LCA+y1LP-_ { ]|w~{X!b4 bStop = true; p=x&X~
for(int i=0;i<nStartPos.length;i++) !J<0.nO/: fileSplitterFetch.splitterStop(); 4[;}/- b 1Wz []
"bn9
+ } )t-P o'RW } _1$ Y\Y //负责部分文件的抓取 yW7>5r **FileSplitterFetch.java rZ-< Ryg */ 1)ij*L8k package NetFox; tlvZy+Blv E2cZk6~m{ ZK'WKC import java.io.*; 4s_5>r4 import java.net.*; 0~WXA=XG [U^Cz{G g;AW public class FileSplitterFetch extends Thread { d*k5h<jM Rb:?%\= 2MYez>D String sURL; //File URL saQ
~v@ long nStartPos; //File Snippet Start Position ks%;_~b long nEndPos; //File Snippet End Position p^ROt'eQ< int nThreadID; //Thread's ID !~'D;Jh boolean bDownOver = false; //Downing is over k6z]"[yu boolean bStop = false; //Stop identical 7MJ\*+T|03 FileAccessI fileAccessI = null; //File Access interface \/Q~C! M($GZ~ b%A v6uRzFw
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException HEa7!h[a' { zYdieE\- this.sURL = sURL; &%/T4$'+Y+ this.nStartPos = nStart; Q\xDAOEL this.nEndPos = nEnd; ?LU>2!jN nThreadID = id; V7gL*,3>= fileAccessI = new FileAccessI(sName,nStartPos);//定位 UEYJd&n0CB } C; U4`0=8 3syA$0TZt KXcRm) public void run() f qWme:x { FoZI0p?L)9 while(nStartPos < nEndPos && !bStop) l>s@&%;Mg { 4u41M,nJQd I|;zGmg#k ".( G,TW try{ &><b/,] URL url = new URL(sURL); upeioC q HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ?GLCd7TP httpConnection.setRequestProperty("User-Agent","NetFox"); ph!h8@e String sProperty = "bytes="+nStartPos+"-"; mO]dP;, httpConnection.setRequestProperty("RANGE",sProperty); 5K$<Ad4$b Utility.log(sProperty); ).e}.Z6[i` yqtHlz% H)dZ0n4T InputStream input = httpConnection.getInputStream(); xkSVD6Km //logResponseHead(httpConnection); e8(Qx3T?b j*f\Z!EeZ 6jm/y@|F! byte[] b = new byte[1024]; u%"5<ll int nRead; rqm":N8@ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) -w)v38iX! { /f+BeQ3#/ nStartPos += fileAccessI.write(b,0,nRead); tk8\,!9Q //if(nThreadID == 1) L@Qvj-5e // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); .i|nn[H & } <~_XT>`y z_{_wAuY e?O$`lf Utility.log("Thread " + nThreadID + " is over!"); %i?v)EW bDownOver = true; -3b_}by //nPos = fileAccessI.write (b,0,nRead); j:2F97 } >/%XP_q%`e catch(Exception e){e.printStackTrace ();} -GB,g=Dk } i;|I;5tC } a gL@A \ZE=WvnhZ DeT$4c*:[ //打印回应的头信息 ,TB$D]u8 public void logResponseHead(HttpURLConnection con) M&9urOa` { Au(oKs< for(int i=1;;i++) wPcEvGBN= { cb{"1z String header=con.getHeaderFieldKey(i); \,v+ejhw if(header!=null) 2<w vO 9 //responseHeaders.put(header,httpConnection.getHeaderField(header)); %AWc`D
Utility.log(header+" : "+con.getHeaderField(header)); mZM7 4!4X else ,69547#o break; ;$4&Qp:# } "*MF=VB1 } vO/ 3bu} Vu E$-)&) HN5,MD[ public void splitterStop() qFq$a9w|@ { WoNY8
8hT bStop = true; ]-SJ";aU } "o_'q@.} 6'<[QoW]; G!%8DX5 } J^<uo( 88?O4)c &rX#A@= /* C[#C/@ **FileAccess.java dq'f
>Sz} *//文件访问(定位,写) ;mwnAO package NetFox; %p&y/^=0I import java.io.*; zf^|H%
~^ Unb3
Gv#O K"X"2c1o public class FileAccessI implements Serializable{ M,bs`amz vEGI //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 =]"I0G-s! RandomAccessFile oSavedFile; |z:4T%ES long nPos; {c*5 )x! CHD.b%_| L2~'Z'q public FileAccessI() throws IOException T"gk^. { a1_ o this("",0); 6Q_A-X3hk } ev_' .t' Q[|*P ] w H3ovF public FileAccessI(String sName,long nPos) throws IOException $p$p C/:% { iJmzVR+ oSavedFile = new RandomAccessFile(sName,"rw"); fz2}M:u this.nPos = nPos; E\;%,19Ob oSavedFile.seek(nPos); &%t&[Se_~ } '!,(G3 1v,R<1)& y%kZ## public synchronized int write(byte[] b,int nStart,int nLen) u3pFH( { %NC/zqPH~ int n = -1; LGX+_" try{ e6jA4X+a oSavedFile.write(b,nStart,nLen); |(PS
bu n = nLen; ,_,*I/o>B } (hQi { catch(IOException e) Z|ZB6gP>h1 { urCTP.F e.printStackTrace (); ~{vB2 } kY{$[+-jR LNHi}P~ { w sT return n; i27)c)\BM } b`^Q ':^A :g^
mg-8 TOS'|xQ } dh&>E [+xsX*+ S9r+Nsn /* v_WQ<G? **SiteInfoBean.java U/|JAg# */ D>HbJCG4^ package NetFox; $&KkZ |d*a~T0 lmD[Cn public class SiteInfoBean { pIYXYQ=Z .uxM&|0H aJA( UN45 private String sSiteURL; //Site's URL R<{Vgy private String sFilePath; //Saved File's Path ;z N1Qb private String sFileName; //Saved File's Name +{I" e,Nk private int nSplitter; //Count of Splited Downloading File zR]!g|;f aW{5m@p{" x-%RRm<V public SiteInfoBean() ftl?x'P% {//nSplitter的缺省值为5 M6Np!0G //default value of nSplitter is 5 5$cjCjY this("","","",5); w-LENdw }
:2,NKdD \hBzP^*"n VO=Ibu&X public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) uZ\+{j= { Z*UVbyC sSiteURL= sURL; .kPNWNrw sFilePath = sPath; gt02Csdt sFileName = sName; 150-'Q this.nSplitter = nSpiltter; _*Z3,*~"X e6J^J&`|4 7Zdg314 } -57~7
<N 9:-7.^`P \]5I atli public String getSSiteURL() /sT?p=[. { ctLNzJes% return sSiteURL; f% )9!qeW } BK6
X)1R } e+`Kxy >0<n%V#s:r public void setSSiteURL(String value) 5Pn.c! {
%DXBl:!Y` sSiteURL = value; A8Fe@$<#8 } Vdd x-X~'p'f BI %XF
9{ public String getSFilePath() HG?+b { Fs%`W4/ return sFilePath; .SER,],P } C c:<F_UI Sp:w _;{# Rb&9!z public void setSFilePath(String value) <r t$~} { +qC[X~\ sFilePath = value; ]S[?tn } 0F/[GZ<k 3]mprX' T]-MrnO public String getSFileName() ~"SQwE| { 09jE7g @X} return sFileName; LR>s2zu- } !U m9ceK vIOGDI> K.Y`/< public void setSFileName(String value) ,1N|lyV { [X!w@d= i sFileName = value; PS+~JwD Uc } NLG\*mQ Q!V:=d S_Wq`I@b public int getNSplitter() "V26\ { s_VcC_A return nSplitter; 9*ZlNZ
} >$L7J=Em igk<]AwxS P@vUQ public void setNSplitter(int nCount) L-D4>+ { ob;|%_ nSplitter = nCount; 2[qfF6FHA } vB_3lAJt@ } ~nfOV* w3);ZQ| 86Q3d%;-yo /* 2J&~b 8 : **Utility.java >WDHRC */ kex V~Q package NetFox; e7xBi!I)~ oYZ
4F n>j2$m1[ public class Utility { :e;6oC*"q DlE, aYB $">j~! ' public Utility() kF~(B]W( { k/wD@H N qfE0J;e cVL|kYVWT } 7`;sX?R W
wPzm?30 //线程睡眠 K8X7IE public static void sleep(int nSecond) f/#Id]B { 'A7!@hVy try{ n2B%}LLa Thread.sleep(nSecond);
1?FG3X 5 } DMG~56cTO, catch(Exception e) /ta}12Z { KxX [8 e.printStackTrace (); >aO.a[AM }
c2M } tSJ# W?.469yy //日志 7UMZs7L$ public static void log(String sMsg) 0HoHu*+FX { pS ](Emn`. System.err.println(sMsg); :) lG}c
} |di(hY| NknS:r&2 )
bI.K[0^ public static void log(int sMsg) O?Bf (y { v7
*L3Ol
System.err.println(sMsg); nXLz<wE } ?o;ip } Mu[lk=jC #:gl+ [8sYE h /* KQNQ<OE4 **TestMethod.java [q2:d^_FA */ JfN
'11,$ package NetFox; 4@{cK| d/Q#Z F~
5,-atDM public class TestMethod { 3LLG#l)8 3&^hf^yg 7 mCf*| public TestMethod() 5:IDl1f5 { ///xx/weblogic60b2_win.exe -eF-r=FR try{ .h=n [`RB SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); //2O#Fg{/ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); ?pW1}:z
SiteFileFetch fileFetch = new SiteFileFetch(bean); ;um)JCXz fileFetch.start(); O>]i? } BJux5Nh catch(Exception e){e.printStackTrace ();} r{R<J?Y );d 07\V .t1:;H b } w{*kbGB8s7 KSchgon0V qKfUm:7Q_ public static void main(String[] args) eavn.I8J { Ra|P5 new TestMethod(); qhGz2<}_j } _HHvL= } #kM|!U= 点击下载更多相关资料
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