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/* ^Y{6;FJ **SiteFileFetch.java ]g>m? \'n */ <+T\F; package NetFox; *K+jsVDY import java.io.*; ]_ejDN\>{V import java.net.*; cuQ7kECV 29a_ZU7e6 hJw
|@V public class SiteFileFetch extends Thread { FQk_#BkK j<ABO")v %tzN@ SiteInfoBean siteInfoBean = null; //文件信息Bean s;B
j7] long[] nStartPos; //开始位置 ?qg^WDs$ long[] nEndPos; //结束位置 bkr~13S{+ FileSplitterFetch[] fileSplitterFetch; //子线程对象 q GpP, long nFileLength; //文件长度 I|g@W_ boolean bFirst = true; //是否第一次取文件 lh,ylh boolean bStop = false; //停止标志 ?iPZsV File tmpFile; //文件下载的临时信息 A6^p}_ DataOutputStream output; //输出到文件的输出流 E!zd( %\}dbYS
' //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) |rE!
public SiteFileFetch(SiteInfoBean bean) throws IOException 5q5 )uv" { Q7~'![(a siteInfoBean = bean; @<D'-mMt //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); tt6.
jo tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); @-wNrW$ if(tmpFile.exists ()) ;x:k-s2- { 6R 1wn&8 bFirst = false; ku/\16E/k read_nPos(); (dzH3_U } BIxV|\k else h8f!<:rTS { '1W!xQ}E nStartPos = new long[bean.getNSplitter()]; r{t.c?/ nEndPos = new long[bean.getNSplitter()]; MV"E?}0 } P0%N
Q1bn n-b>m7O( S}oG.r
9 )-bD2YA{ } 5h`m]#YEG NuC-qG# %f3c7\=C public void run() |av*!i5Q { &$mZ?%^C //获得文件长度 2[jL^XMM //分割文件 Jj2g5={ //实例FileSplitterFetch 2y3?!^$ //启动FileSplitterFetch线程 O&`U5w //等待子线程返回 x96qd%l/ try{ f{)+-8 if(bFirst) +7| [b { /xl4ohL$a nFileLength = getFileSize(); .)LZ`Ge3F if(nFileLength == -1) Mw/?wtW { vuYO\u+ud System.err.println("File Length is not known!"); }1QI"M* } J.1O/Pw!.a else if(nFileLength == -2) S5uJX#*; { H_VEPp,T System.err.println("File is not access!"); rHvF%o } x&at^Fp else CQ@LmTW[ { /8f>':zUb for(int i=0;i<nStartPos.length;i++) an3~'g? { AXz-4,=xX nStartPos = (long)(i*(nFileLength/nStartPos.length)); u@<Pu@?xm } :lUX5j3 for(int i=0;i<nEndPos.length-1;i++) 1TKEm9j]u { [/
AIKZM< nEndPos = nStartPos[i+1]; I[}75:^Rt } ?q\FLb%"7 nEndPos[nEndPos.length-1] = nFileLength; ;avQ1T'{?g } 3\;v5D: } d)N^PJ/ ZB-QABn Fj
S%n$ //启动子线程 ,mB Z`X@N
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; =v.{JV# for(int i=0;i<nStartPos.length;i++) DW#Bfo { 3)}(M fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), W%TQYR siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), +wipfL~&S nStartPos,nEndPos,i); w#oGX Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); :*^:T_U fileSplitterFetch.start(); <>%,}j
9 } M(yH%i^A // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), rVY?6OMkd siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); y<TOqn // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", )IQ* nEndPos = " + nFileLength); X:>$8 ^gS // fileSplitterFetch[nPos.length-1].start(); `)T&~2n ^7.XGWQ)- 1n_;kaY //等待子线程结束 Bp
:~bHf //int count = 0; =-_)$GOI' //是否结束while循环 g6WPPpqus boolean breakWhile = false; X2qv^G, HN{z T& t#Th9G]1 while(!bStop) te i`/ { Bz?l{4". write_nPos(); c7\VTYT Utility.sleep(500); zxkM'8JC breakWhile = true; +=7:4LFOL `ruNA>M cph~4wCS[U for(int i=0;i<nStartPos.length;i++) -;$nb~y { a5|@R<iF if(!fileSplitterFetch.bDownOver) NetYg]8` { ^5>s7SGB" breakWhile = false; 3)3Hck
break; @D)Z{=>{=5 } L7]]ZAH!1 } {Bh("wg$Lk if(breakWhile) Ea-bC:> break; !DPF7x(-{ 61} i5o K/^
+eoW( //count++; WfZF~$li` //if(count>4) OiF{3ae( // siteStop(); i\)3l%AK]T } =Q-k'= 6\ );Z]SGd 2:Q(Gl`<l System.err.println("文件下载结束!"); ;\qXbL7 } P>(P2~$Y" catch(Exception e){e.printStackTrace ();} qNxB{0(D } VevNG* Fi4UaJ3K -p`L%xj\ //获得文件长度 4J5pXlzV public long getFileSize() FbAW_Am( { <C'Z H'p int nFileLength = -1; OUI6
ax\[ try{ g\Ak;03n URL url = new URL(siteInfoBean.getSSiteURL()); 9#qeFBI HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); "k:=Y7Dx httpConnection.setRequestProperty("User-Agent","NetFox"); F)SP aC4 CQgcC-)ns] *nRNg.i3D int responseCode=httpConnection.getResponseCode(); )o{aeV if(responseCode>=400) m2xBS!fm { &$=! dA processErrorCode(responseCode); Ja|{1&J. return -2; //-2 represent access is error px=]bALU } 2/B)O)#ls .po>qb6 NLyXBV[hV String sHeader; 9 |{%i$ (?>cn_m +BL{@,zr for(int i=1;;i++) $ J1f.YE { -:<lkq&/ //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); [|RjHGf //Utility.log(in.readLine()); | kXm}K sHeader=httpConnection.getHeaderFieldKey(i); };b1aha G if(sHeader!=null) iidT~l { /7/0x ./{ if(sHeader.equals("Content-Length")) 6ZOy&fd,Ty { 1$pb (OK nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); XN;&qR^j break; gl8Ib<{ } Q`ME@vz } Vn, ><g else q/PNJ#< break; QA?oJ_}y } fDh]tua } eKG2*CV catch(IOException e){e.printStackTrace ();} /Vww?9U; catch(Exception e){e.printStackTrace ();} =:=/Gz1 `s"d]/85VW d
~`V7B2Y Utility.log(nFileLength); w5,Mb _mJG5(| o6a0'vU>< return nFileLength; W\cjdd } wRvb8F0 )d`mvZBn1 Da.G4,vLh //保存下载信息(文件指针位置) Ak@Dyi?p private void write_nPos() 86
.`T l; { r.yK, try{ YcDe@Zuwn output = new DataOutputStream(new FileOutputStream(tmpFile)); w0lT%CPx output.writeInt(nStartPos.length); 6RoAl$}' for(int i=0;i<nStartPos.length;i++) =qu(~]2( { w7TJv4_ // output.writeLong(nPos); $B (kZ output.writeLong(fileSplitterFetch.nStartPos); r!GW=u' output.writeLong(fileSplitterFetch.nEndPos); 8b(!k FxD } -_N)E ))G output.close(); ;9a 6pz< } `]i
[]| catch(IOException e){e.printStackTrace ();} %*}Y6tl '| catch(Exception e){e.printStackTrace ();} "ju'UOcS/ } iE].&>w F@YKFk+a xHA0gZf //读取保存的下载信息(文件指针位置) G`0V)S private void read_nPos() zM#sOg { 8LzBh_J? try{ u<xo/=Z DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); !l@zT}i?? int nCount = input.readInt(); P-`(0M7^ nStartPos = new long[nCount];
9+=gke nEndPos = new long[nCount]; u]*0;-tz for(int i=0;i<nStartPos.length;i++) % Zjdl { u=x+J=AH nStartPos = input.readLong(); d+eZub94U nEndPos = input.readLong(); }UwO<# } dT|vYK}\ input.close(); sD;M!K_ } hX:"QXx catch(IOException e){e.printStackTrace ();} \ 0W!4D
catch(Exception e){e.printStackTrace ();} zUJZ`seF } c9"r6j2m5 ;&b.T}Nf06 aB~S?.l private void processErrorCode(int nErrorCode) C1kYl0zR[ { ]=pR System.err.println("Error Code : " + nErrorCode); /YAJbr } u\yVR$pQ w;6bD'.>; Lh.b5Q| //停止文件下载 zi9[)YqxPH public void siteStop() g4p { RE2&mYt bStop = true; 6w8">~)Z for(int i=0;i<nStartPos.length;i++) e'%v1-&sP fileSplitterFetch.splitterStop(); "qz3u`[o rwLAW"0Qz ZBT1Y.qA } Zdc63fllM } Mj#-j/{x{5 //负责部分文件的抓取 `l;n:]+ **FileSplitterFetch.java XRx+Dddt; */ T;TA7{B package NetFox; b?X.U}62_ l e4?jQQ@L #DU26nCL import java.io.*; TfYVw~p_ % import java.net.*; soA|wk\A )Z 9E=% 8Me:Yp_Xt public class FileSplitterFetch extends Thread { [epi#]m *a;@* U1_@F$mq< String sURL; //File URL P262Q&.}d long nStartPos; //File Snippet Start Position H,fZ!8(A_) long nEndPos; //File Snippet End Position v{zMO:3 int nThreadID; //Thread's ID }/tf>?c boolean bDownOver = false; //Downing is over X|f7K boolean bStop = false; //Stop identical ]V l]XT$Um FileAccessI fileAccessI = null; //File Access interface e}/Lk5q! &s Pq<l o Z>c3 public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException gxz-R?. { m7a#qs;, this.sURL = sURL; h,aA w#NE* this.nStartPos = nStart; ryF7 this.nEndPos = nEnd; O/AaYA& nThreadID = id; xsd_Uu* fileAccessI = new FileAccessI(sName,nStartPos);//定位 ( wDm*bZ* } g8qgk:} A1'hlAGF )'17r82a public void run() <h%O?mkC { An;MVA while(nStartPos < nEndPos && !bStop) 5pr"d@. { +/,icA}PI @SZM82qU2z b2aF 'y/ try{ EVp,Q"V] URL url = new URL(sURL); 3bk|<7tl HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); )[0T16 httpConnection.setRequestProperty("User-Agent","NetFox"); f` =CpO* String sProperty = "bytes="+nStartPos+"-"; _XJ2fA ) httpConnection.setRequestProperty("RANGE",sProperty); jK \T|vGJa Utility.log(sProperty); x~xa6 eP*lI<NQ1 &%})wZ+Dj InputStream input = httpConnection.getInputStream(); m'P1BLk //logResponseHead(httpConnection);
J)P$2# JJ;[, zi`b2h byte[] b = new byte[1024]; rSXh;\MfB4 int nRead; I}Nd$P)> while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) _ZY)M { HGm 3+, nStartPos += fileAccessI.write(b,0,nRead); 9Gv[8'I //if(nThreadID == 1) 'YNT8w/3 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); =]:> "_jN } GKN%Tv:D_ !vG'J\*xc WVVJ Utility.log("Thread " + nThreadID + " is over!"); 'cY` w bDownOver = true; Y3Vlp/"rB" //nPos = fileAccessI.write (b,0,nRead); $)3%U?AP } #fT*]NN catch(Exception e){e.printStackTrace ();} m[j70jYe } nX$XL=6mJ& } J[f;Xlh (`y*V;o4 626Z5Afg //打印回应的头信息 FQ
g~l4WX public void logResponseHead(HttpURLConnection con) O_Oj|'bBC { Cvn#=6V3 for(int i=1;;i++) nstUMr6 { yAoe51h? String header=con.getHeaderFieldKey(i); LpR3BP@At if(header!=null) | WvU q //responseHeaders.put(header,httpConnection.getHeaderField(header)); w)Covz'uf Utility.log(header+" : "+con.getHeaderField(header)); @V03a
)6,h else =[F<7pvE break; ]`Oo%$Ue } ,o)d3g-&g } %-d]X{J: 76u&EG% `uC@nJ public void splitterStop() g!-,] { 4;2< ^[M bStop = true; o6V}$wT3J } H^YSJ6 #dM9pc jh P2bZ65>3y } $@UN4B?y mdRU^n jQ:OKh<Y /* d/i`l* **FileAccess.java AhZ8 0! *//文件访问(定位,写) N!g9*Z package NetFox; tKpmm`2 import java.io.*; 9<KAXr# 1Tu
*79A qi_Jywd:w public class FileAccessI implements Serializable{ _-EyT r#XT3qp$d //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 @|\}.M<e*) RandomAccessFile oSavedFile; =jN*P? long nPos; mauI42 k+ze74_" T<XA8h* public FileAccessI() throws IOException ih7/} { XGl+S this("",0); mvq&Pj 1}L } g1jTy7g? ~Q\3pI. | 7D<#(CE{ public FileAccessI(String sName,long nPos) throws IOException ]MxC_V+P` { 3`k;a1Z#O' oSavedFile = new RandomAccessFile(sName,"rw"); {~F4WjHJp this.nPos = nPos; B[KJR?> oSavedFile.seek(nPos); aoXb2 2]{ } zzxGAVu ,lyb!k8 }`@728E
public synchronized int write(byte[] b,int nStart,int nLen) E2m8UBS { h=:Q-?n- int n = -1; VY3& try{ wu)w oSavedFile.write(b,nStart,nLen); ~J P=T n = nLen; }2e??3 } ho$+L catch(IOException e) bua+I;b { gM
_hi e.printStackTrace (); ]wtb-PC } QDu 2?EYZq o#skR4lwe Rb.SY{}C return n; g[3)P+ } `DC2gJKk% 1&-
</G# )'~6HO8Z } ={z*akn, RRI"d~~F6 -:na:Vsi /* PbmDNKEh{ **SiteInfoBean.java S;)w. */ 6Aku1h package NetFox; tQjLOv+?= @~%r5pz6 kOed ]>H public class SiteInfoBean { {j7uv"|X7 ^pYxKU_O 4y+< dw private String sSiteURL; //Site's URL `5C,N!d8X private String sFilePath; //Saved File's Path og
kD^ private String sFileName; //Saved File's Name dUQDOo private int nSplitter; //Count of Splited Downloading File t{.8|d@
H XmS|PX FAj)OTI2S public SiteInfoBean() +1D+]*t_?[ {//nSplitter的缺省值为5 #H:7@ //default value of nSplitter is 5 lMBLIB]i this("","","",5); ^3UGV*Ypk } sNLs\4v 1 A\OC H(Z88.OM public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) MerFZd 1 { @WVcY:1t# sSiteURL= sURL; 6=fSE=]DY sFilePath = sPath; EUxG Aj$- sFileName = sName; @g&ct>@y this.nSplitter = nSpiltter; 8/=L2fNN[
&MCbYph, #':fkIYe' } BYMi6wts o<|P9#(U" }3OKC2K~ public String getSSiteURL() MZT23[+ { 6Q${U7%7 return sSiteURL; y$_eCmq } "\3B^ e, "t~ E/%9jDTQ public void setSSiteURL(String value) HxIIO[h { Y9&,t\ q sSiteURL = value; rl#p".4q } o
!vE~ iT%} $Lu~ {qN 5MsY public String getSFilePath() PEc=\? { ZR(x%ews return sFilePath; Yj6*NZ* } njWL U! 0Nnsjh 1q,{0s_kp public void setSFilePath(String value) 23DiW#o' { (aH'h1,G sFilePath = value; 9R7A8 } z}MP)|aH: /,g ,Ch<d 'coV^~qy public String getSFileName() pLLGus+W { Bi
@2 return sFileName; @
<
Q|5 } n6BQk2l .~l=zu 34Kw! public void setSFileName(String value) a_'2V; { //s:5S<Z sFileName = value; HBu[gh;b } ''0fF_P W7 #9jo p_${Nj public int getNSplitter() =g|IG
[V { n}!PO[m~ return nSplitter; !& z(:d } .MP !` O vk_\On GJoS #s public void setNSplitter(int nCount) xUa{1!Y8 { YLiSbLz1 nSplitter = nCount; _s .G } 4UW_Do } q)^Jj?W \cUC9/
b VB,?Mo}R /* z<##g **Utility.java mjKS{ */ Yd#/1!A7u package NetFox; {l/-LZ. .ZJRO>S k[:bQ)H public class Utility { <U!`J[n% no9;<]4 &GB:|I'%7 public Utility() WRrd'{sB { vJ-q*qM1 k{Me[B >o7n+Rb: } 29?,<bB) 3tZ]4ms} //线程睡眠 L_wk~z public static void sleep(int nSecond) nh!a)]c[ { '8{Ne!y try{ -\
EP.Vtz Thread.sleep(nSecond); DUC#NZgw } !>zo_fP catch(Exception e) 4'!c*@Y
{ .U?'i< e.printStackTrace (); OslL~< } JU^lyi! } ]Zyur` dAkgR~ //日志 RIY,K*f. public static void log(String sMsg) enSXP~9w { Z(ACc9k6:' System.err.println(sMsg); zhpt%7So } Cif>7]M o .qf _A oBzfbg8p public static void log(int sMsg) H\:lxR^ { |Y [wzDYV System.err.println(sMsg); d+Ek%_ } T^~5n6 } JAQb{KefdO "6us#T FMClSeO7
/* p4-o/8rO **TestMethod.java ]jmL]Ny^ */ 5`gQ~ package NetFox; e0T34x' vfE6Ggz
ysQ,)QoiR{ public class TestMethod { RWgNo#< JQ6zVS2SSS )`A3M) public TestMethod() :=/>Vbd: ) { ///xx/weblogic60b2_win.exe T
QSzx%i2 try{ [ji#U s:h SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); C86J
IC" //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); i5K[>5 SiteFileFetch fileFetch = new SiteFileFetch(bean); F=a<~EpZ fileFetch.start(); 1M
781 } ZGYr$C~ catch(Exception e){e.printStackTrace ();} O2f-5Y$@ ),ma_{$N ,kF}lo) }
1][S#H/? Gr^E+#; hnc@ public static void main(String[] args) -2 A(5B9Fq { _;UE9S% new TestMethod(); \3S8 62B7 } lS'-xEv? } al9t^ 点击下载更多相关资料
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