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/* w1GCjD*y **SiteFileFetch.java Ia(A&Za */ $h$+EE! package NetFox; (te\!$ import java.io.*; %WO;WxG8^ import java.net.*; YqDw*S{ F*NIs:3; Dgkt-:S/T| public class SiteFileFetch extends Thread { d?S<h`{x r[?rwc^ %`}Qkb/Lyh SiteInfoBean siteInfoBean = null; //文件信息Bean wIY#TBu long[] nStartPos; //开始位置 ,)Q mQ^/ long[] nEndPos; //结束位置 PDir?' FileSplitterFetch[] fileSplitterFetch; //子线程对象 JEP"2M N, long nFileLength; //文件长度 fN K~z* boolean bFirst = true; //是否第一次取文件 Tok"-$`N boolean bStop = false; //停止标志 %V+,# File tmpFile; //文件下载的临时信息 Us%VBq DataOutputStream output; //输出到文件的输出流 /g8yc'{p j"NqNv //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) fx}R7GN2 public SiteFileFetch(SiteInfoBean bean) throws IOException bqe;) A7 { lLg23k{' siteInfoBean = bean; s@q54 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); zcNV<tx tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); (nc fR if(tmpFile.exists ()) a1}W2;W0]g { *3k~%RM%? bFirst = false; 4,aBNuxWd read_nPos(); =djzE`)0 } {#;6$dU;( else BHK_=2WYz { vAVoFL nStartPos = new long[bean.getNSplitter()]; UGN. ]#"# nEndPos = new long[bean.getNSplitter()]; jAJkCCG } OE[/sv zO+nEsf^O m83i6"!H =_UPZ] } KS|$_-7u Y0b.utR& `Y[zF1$kz^ public void run() M9N|Ql { HK-?<$Yc //获得文件长度 o?X\,}-s //分割文件 grS,PKH //实例FileSplitterFetch tl4;2m3w //启动FileSplitterFetch线程 SMhT>dB //等待子线程返回 nBD7 try{ GV2}K
<s if(bFirst) q&N&n%rbm { My[L3KTTp nFileLength = getFileSize(); 3!}#@<j
if(nFileLength == -1) +}1]8:>cq { ooD/QZUE System.err.println("File Length is not known!"); L3W
^ip4 } 0qTa @y else if(nFileLength == -2) 'Gc6ZSLM { c'(]n]a% System.err.println("File is not access!"); \Js9U|lY } =X1$K_cN else t=pG6U { #uH1!UQb for(int i=0;i<nStartPos.length;i++) i@p?.%K{ { hyBSS,I nStartPos = (long)(i*(nFileLength/nStartPos.length)); ; w+A38N$J } Z2`e*c-[E for(int i=0;i<nEndPos.length-1;i++) MJD4#G { NH?s nEndPos = nStartPos[i+1]; :Ert57@l } ~f@;. nEndPos[nEndPos.length-1] = nFileLength; {<_}[} XY } I{2e0 } zJV4) ~<$8i}7 G)putk@
//启动子线程 r&H>JCRZ<= fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ^]v}AEcmW for(int i=0;i<nStartPos.length;i++) %]
Bb;0G { i|=XW6J% fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), cvC;QRx siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), IGp-`%9 nStartPos,nEndPos,i); :2?'mKa7 Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); %TR->F fileSplitterFetch.start(); 8"4`W~ 3 } H(g&+Wcu= // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), T"0a&.TLj siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 9!R !H& // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", f{+8]VA nEndPos = " + nFileLength); $Qm;F%
> // fileSplitterFetch[nPos.length-1].start(); 10DS %d=-<EQ|& `P GWu1/ //等待子线程结束 O a7W&wi //int count = 0; M'g4alS //是否结束while循环 (0k0gq; boolean breakWhile = false; 'LX=yL]I [2
Rp.? crmnh4- while(!bStop) S ^n:O { wF&\@H write_nPos(); z1"UF4x* Utility.sleep(500); 8CYJR/ breakWhile = true; 4o|~KX8Qz $4L=Dg ^L[Z+7| for(int i=0;i<nStartPos.length;i++) jQ[Z*^"} { 7kb`o
y;(^ if(!fileSplitterFetch.bDownOver) 5Ut0I]h|z { * T~sR'K+| breakWhile = false; 'N}Wo}1r break; 3$RII-}> } 5=
F-^ } u}$U|Cw-;T if(breakWhile) nbYaYL?& break; {b+IDq`)= g_}@/5?y G3e%~ //count++; X!"y>J //if(count>4) :q= XE$%H // siteStop(); ,= PDL } Mc\lzq8\ 1
&hF>}O 6Qo6T][ System.err.println("文件下载结束!"); iffU}ce } E O}(MXS catch(Exception e){e.printStackTrace ();} ^oP]@r"qy } @emZwN"m *yJb4uALB g VuN a) //获得文件长度 =CJs&Qa2 public long getFileSize() |, :(3Ml { Dp'/uCW) int nFileLength = -1; [6D>2b}:{[ try{ t ?{B* URL url = new URL(siteInfoBean.getSSiteURL()); x^;nfqn| HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); JD>!3>S)? httpConnection.setRequestProperty("User-Agent","NetFox"); |W::\yu6 +\E\&^ZQ Oc8+an1m int responseCode=httpConnection.getResponseCode(); ?W|POk} if(responseCode>=400) 1ri#hm0x\ { &iSQ2a!l8b processErrorCode(responseCode); Wd%j;glG return -2; //-2 represent access is error h&Sl8$jVp } >LNl8X:Cz* FKzqJwT T<ua0;7 String sHeader; D2hvf^g'* AfY(+w6!K :@p`E}1r{ for(int i=1;;i++) !cq4+0{O;& { Sj*H4ZHD<& //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); < ^&'r5H //Utility.log(in.readLine()); sO*6F`eiZ sHeader=httpConnection.getHeaderFieldKey(i); HY42G#^ if(sHeader!=null) @<AIPla { '|+_~ZO*d if(sHeader.equals("Content-Length")) SY{J { mHhm~u nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ]A\n>Z!; break; K;Xn!:) V: } E6G^?k~q } {7;TQ?/ else :DZiDJ@ break; 6?Wsg`9 } fY `A } 6v1j*' catch(IOException e){e.printStackTrace ();} FX'W%_f, catch(Exception e){e.printStackTrace ();} Nn^el'S' PF+`3 a#{a{> Utility.log(nFileLength); ;J_d% J)(pGS@ B[*i}k%i return nFileLength; c9&
8kq5 } RXP"v- \K4m~e@! Z`f _e? //保存下载信息(文件指针位置) ^hgpeu private void write_nPos() 9hq 7: { 0 Hq$h try{ 9 (&!>z output = new DataOutputStream(new FileOutputStream(tmpFile)); kfHLjr. output.writeInt(nStartPos.length); Oll\T GXP! for(int i=0;i<nStartPos.length;i++) VOiphw` { /q^( uWu // output.writeLong(nPos); ;xRyONt output.writeLong(fileSplitterFetch.nStartPos); 9DT}sCLz:B output.writeLong(fileSplitterFetch.nEndPos); d
EXw=u } zL{KK9Or output.close(); kn<[v;+ } ~jPe9 catch(IOException e){e.printStackTrace ();} =*'`\}];" catch(Exception e){e.printStackTrace ();} M\GS&K$lq } $pD^O!I)? FYi<+]HZ eD/?$@y //读取保存的下载信息(文件指针位置) ;CC[> private void read_nPos() 8?(4E 'vf { }{ P}P} try{ Rw7Q[I5z% DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); w?R6$n` int nCount = input.readInt(); 4f1*?HX& nStartPos = new long[nCount]; !nd*U}q nEndPos = new long[nCount]; 2{%BQq>C for(int i=0;i<nStartPos.length;i++) 3sL#_@+yz { [~;9Mi.XL nStartPos = input.readLong(); U@*z#T#"m nEndPos = input.readLong(); Ufk7%` } *s/F4?* input.close(); d2(n3Xf } 2
o.Mh/D0 catch(IOException e){e.printStackTrace ();} KSexG:Xb catch(Exception e){e.printStackTrace ();} $`riB$v } y K{~ P--#5W;^oB 0 8U:{LL private void processErrorCode(int nErrorCode) 7<)
.luV { QM$?}>: System.err.println("Error Code : " + nErrorCode); @U9ov >E } m/{rmtA4 w,P2_xk` :8rqTBa` //停止文件下载 'tdjPdw public void siteStop() >Qi2;t~G { N_T;&wibO bStop = true; Z$@Juv&>5^ for(int i=0;i<nStartPos.length;i++) U2h?l
`nP fileSplitterFetch.splitterStop(); LsmC/+7r$1 YS/DIH{9e <?I~ + } 1M+mH#? } ^,rbA>/L //负责部分文件的抓取 m!PN1$9V **FileSplitterFetch.java |+[bKqI5 */ 5bAy@n package NetFox; !W6]+ u=4tW:W, BeVQ[ import java.io.*; a~{mRh import java.net.*; N".
af)5 9iv!+(ni kmuF*0Bjk public class FileSplitterFetch extends Thread { g.veHh|;_ w+JDu_9+A] KI#hII[Q. String sURL; //File URL .-o$IQsS long nStartPos; //File Snippet Start Position :_vf1>[ long nEndPos; //File Snippet End Position g{i(4DHm( int nThreadID; //Thread's ID 5` Q#2 boolean bDownOver = false; //Downing is over }96^OQPE boolean bStop = false; //Stop identical Q2+e` FileAccessI fileAccessI = null; //File Access interface 1|Fukx<@J< ? 1_*ct=g9 l.&6| public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException jPFA\$To { 9_&.G4%V this.sURL = sURL; QYg2'`( this.nStartPos = nStart; x=9drKIw> this.nEndPos = nEnd; B>JRta;hj nThreadID = id; iptzVr#b[ fileAccessI = new FileAccessI(sName,nStartPos);//定位 X)'uTf0 } C7nLa@ i5rAb<q` g4U%(3,>D public void run() }PoB`H'K5 { G"C'/ while(nStartPos < nEndPos && !bStop) o8Tt|Lxb$8 { .)Du
; &'i>5Y 6)Kg!.n%f try{ /9i2@#J}W1 URL url = new URL(sURL); 38rC;
6 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ?*Jv&f# httpConnection.setRequestProperty("User-Agent","NetFox"); &,bJ]J)8O String sProperty = "bytes="+nStartPos+"-"; 2'N%KKmJL httpConnection.setRequestProperty("RANGE",sProperty); B1\}'g8%f Utility.log(sProperty); Yz[^?M%(D 3>-^/ }]/"auk InputStream input = httpConnection.getInputStream(); n)[{nkS6[ //logResponseHead(httpConnection); )f,iey\- }+,;wj~ 0>>tdd7 byte[] b = new byte[1024]; ](B+ilr
int nRead; >NK*$r8 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) kJ{X5&,_ { E QMn'> nStartPos += fileAccessI.write(b,0,nRead); %[5hTf //if(nThreadID == 1) <kp?*xV]] // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); V|DAw[!6N } iz&)FuOr EW|bs#l QYDSE Utility.log("Thread " + nThreadID + " is over!"); fyh9U_M);w bDownOver = true; |&3[YZY //nPos = fileAccessI.write (b,0,nRead); y&UcTE2;%( } N<9CV!_ catch(Exception e){e.printStackTrace ();} R9^Vk*`gFU } RYy_Ppn96f } +AO(e A-qdTJP pm@Mlwg`1 //打印回应的头信息 zcy!YB public void logResponseHead(HttpURLConnection con) >]s|'HTxF { QT&2&#Z for(int i=1;;i++) +q6/'ErN]m { A+_361KH String header=con.getHeaderFieldKey(i);
GMr jZ if(header!=null) B&VruOP0 //responseHeaders.put(header,httpConnection.getHeaderField(header)); ~4<xTP\* Utility.log(header+" : "+con.getHeaderField(header)); >2tYw,m else !T!U@e=u break; xhWWl(r`5 } u%}zLwMH } srLXwoN[ F8S% \i
+coVE^/w public void splitterStop() .]JGCTB3 { tDJts OL bStop = true; TY"8.vd } `O5wM\Z [RoOc)u VG_ PBG( } AAb3Jf`UW *2P%731n5 ;p)RMRMg /* 3MH9%*w'0 **FileAccess.java Zi/tax9C *//文件访问(定位,写) u$O`
\= package NetFox; *c3(,Bmw import java.io.*; 5_ !s\ 5
ltK\)L H,u {zU') public class FileAccessI implements Serializable{ }>]V_}h P%2aOsD0 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 8iA[w-Pv RandomAccessFile oSavedFile; d| ;S4m` long nPos; 0%&ZR=y(G B]iPixA6 piULIZ0 public FileAccessI() throws IOException n@[_lNa4GD { Se{x-vn?p this("",0); z@Pv~" } l|RBO+} KPHtD4 K2|2Ks_CS public FileAccessI(String sName,long nPos) throws IOException |qm_ESzl { =HapCmrx8 oSavedFile = new RandomAccessFile(sName,"rw"); ZRHK?wg'# this.nPos = nPos; &6wD oSavedFile.seek(nPos); =p{55dR } Pu>jECcz >>bsr#aJ ![1+=F! public synchronized int write(byte[] b,int nStart,int nLen) 'o}v{f { wIQ~a int n = -1; _@2}zT try{ !>RDHu2n oSavedFile.write(b,nStart,nLen); 71b0MHNkvv n = nLen; JPO'1D) } .Q!_.LX catch(IOException e) EmG':K( { &tVIl$e
e.printStackTrace (); 2S,N9(7 } RRRF/Z;)) !B|Aq-
n, v'RpsCov return n; w2X0.2)P2 } /{Mo'.=Z 03pD< 3']a1\sy^ } <$z6:4uN_ W>#[a %R #
RoJD:9 /* NVnId p **SiteInfoBean.java L!;"73,&(8 */ r+:]lO package NetFox; C GN=kQ ;*u"hIl1/ I-Q@v` public class SiteInfoBean { wE3L,yx= WwUhwY1o!L PaD6||1F private String sSiteURL; //Site's URL (fA>@5n private String sFilePath; //Saved File's Path /aTW X private String sFileName; //Saved File's Name eR3v=Q private int nSplitter; //Count of Splited Downloading File kI?+\k\V` u*}ltR~/ YuXCRw9p; public SiteInfoBean() <?Ln`,Duk {//nSplitter的缺省值为5 pl}nbY //default value of nSplitter is 5 pq"Z,9,F% this("","","",5); zEVQ[y6BcM } zsM2R"[X %8O1sF W{RZ@3ZY public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) #Mw 6>5}< { 22OfbwCb
sSiteURL= sURL; q\pI&B sFilePath = sPath; 6b2Z}B sFileName = sName; |` |#-xu this.nSplitter = nSpiltter; %?`O
.W tgyW:<iv fZ aTckbE } _lG|t6y gU&y5s~ LwlO)|E public String getSSiteURL() ]z#+3DaH { K<rv|bJ return sSiteURL; $-)T } _`I}"`2H >^6|^rc l|81_B C" public void setSSiteURL(String value) ;FGS(.mjlC { c>Tf@Aog> sSiteURL = value; UY6aD~tD0 } 2U|"]tpM& 3qW]( $l $p| public String getSFilePath() 38 ]}+Bb { Q7.jSL6 return sFilePath; s\zY^(v4 } =X1oB,W{ z]2MR2W@X " Tk, public void setSFilePath(String value) G|oO { G} f9:G sFilePath = value; O3V.4tp } ZO!h!2* (%c&Km7K Gf
+>AjU' public String getSFileName() 4bCA"QM[[ { 4_D
*xW return sFileName; )&DsRA7v } {,!!jeOO -{}(U ]=o1to- public void setSFileName(String value) L+mE& { 6FYL},.R sFileName = value; &OlX CxH } /lC,5y /mA\)TL|] -^)<FY\ public int getNSplitter() <&^[?FdAa { Im?/#t X return nSplitter; k8\KCKql } 3@nIoN'z Q<NQ9lX ]4ck)zlv
public void setNSplitter(int nCount) M]|]b-# { Y<IuwS nSplitter = nCount; Ee_?aG
e& } /6rQ.+|). } h<V,0sZ&: o|u4C {j G1-r$7\ /* IL:[0q **Utility.java Oq$-*N */ 6.9C4 package NetFox; d~MY
z6" |"PS e~ u S}fQis public class Utility { !?R#e`} k`o8(zPb :_<&LO]Q public Utility() H |
C3{9 { 3dz{"hV rb}fP
#j fWC(L s } +PnuWK$ 7Vk9{x$z //线程睡眠 UD8e,/ public static void sleep(int nSecond) ]#[4eaCg { |)xWQ KzA try{ E2 FnC}#W Thread.sleep(nSecond); $vK,Gugcx }
_ X catch(Exception e) .Tm.M7 { rg;4INs# e.printStackTrace (); 8bQXC+bK } [m4M#Lg\0 } Ie
K+ @{UUB=}9 //日志 Tay$::V public static void log(String sMsg) ~9OZRt[& { ]8R@2L3s System.err.println(sMsg); bHcBjk.\ } 1;KJUf[N U.V/JbXX 3#x1(+c6 public static void log(int sMsg) m]*a;a'}# { N iu
|M@ System.err.println(sMsg); N
p*T[J } vz#-uw,O: } .%dGSDru Lagk l]~9BPsR /* n!AW9] **TestMethod.java -T;^T1
*/ Q=>5@sZB package NetFox; k q]E@tE*3 {]U
\HE1w [3sZ=)G public class TestMethod { E<}sGzMc 00'SceL=` ~(^pGL3< public TestMethod() 6;\1bP? { ///xx/weblogic60b2_win.exe
0Gc:+c7{ try{ YM#MfL# SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); wfe4b //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); w N`Njm9! SiteFileFetch fileFetch = new SiteFileFetch(bean); FfxD=\ fileFetch.start(); &SPY'GQ! } pH.&C 5kA catch(Exception e){e.printStackTrace ();} i-;#FT+Xc Cg?Mk6 i M%la@2SK= } @)0 -9.lFuI $j(d`@.DN~ public static void main(String[] args) hr&&b3W3p { T)%6"rPL3! new TestMethod(); <,0/BMz } v&(=^A\eN } >&:}L% 点击下载更多相关资料
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