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/* I:bD~Fb3 **SiteFileFetch.java S{4z?Ri, ' */ UJfT!= =U package NetFox; >d"3<S ;b import java.io.*; Q|Y0,1eVp| import java.net.*; 7!,YNy% hz;|NW{u E:zF/$tG public class SiteFileFetch extends Thread { p.}Ls)I ]<(]u#g_d Y2B&go SiteInfoBean siteInfoBean = null; //文件信息Bean _lzyMEdr long[] nStartPos; //开始位置 LMi:%i%\ long[] nEndPos; //结束位置 >Rvx[`|O!m FileSplitterFetch[] fileSplitterFetch; //子线程对象 JO=[YoTr long nFileLength; //文件长度 |(moWY= boolean bFirst = true; //是否第一次取文件 IK,|5] *Ar boolean bStop = false; //停止标志 :j|IP)-f File tmpFile; //文件下载的临时信息 gqXS~K9t DataOutputStream output; //输出到文件的输出流 6S6f\gAM j'[m:/ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ^ -FX public SiteFileFetch(SiteInfoBean bean) throws IOException yR{x}DbG { 7 n]65].t siteInfoBean = bean; Uv
YF[@ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 7Dnp'*H tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); l`kWz5[~ if(tmpFile.exists ()) 5aad$f { >hBxY]< \ bFirst = false; 1im^17X read_nPos(); +_XmlX A3Z } l4n)#?Q? else 8+]hpa,q { y;mj^/SxK nStartPos = new long[bean.getNSplitter()]; #HS]NA|e@ nEndPos = new long[bean.getNSplitter()]; y4h=Lki@ } izh<I0 [E#UGJ@ XwV'Ha %r&-gWTQ, } M"%Q&o/I zR!o{8 gtUUsQ%y . public void run() KH\b_>wU2 { &//wSlL3 //获得文件长度 E_KCNn-f //分割文件 UAR5^ //实例FileSplitterFetch qE'9QQ>:b //启动FileSplitterFetch线程 e8YMX&0% //等待子线程返回 m<L; try{ 6wco&7 if(bFirst) 988]}{w { | mu+9 nFileLength = getFileSize(); gP+fN$5'd if(nFileLength == -1) 1c JF/"v { iU6Gp-<M, System.err.println("File Length is not known!"); r kiT1YTY } AiD[SR else if(nFileLength == -2) Fnk_\d6Ma { -{^}"N System.err.println("File is not access!"); ?+T^O?r|O } >]o}}KF? else .0R v(Y { \om%Q[F7a for(int i=0;i<nStartPos.length;i++) {3N'D2N { L4uFNM] nStartPos = (long)(i*(nFileLength/nStartPos.length)); OL_{_K(w } Bgmn2- for(int i=0;i<nEndPos.length-1;i++) iC
iZJ" { RwS@I/ nEndPos = nStartPos[i+1]; T~h5B(J; } "c}@V*cO<d nEndPos[nEndPos.length-1] = nFileLength; <~
J O
s2 } 3\T2?w9u( } (KvROV); &uC@|dbC5 @( n^T //启动子线程 Ltjbxw"Qd fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; `jS T for(int i=0;i<nStartPos.length;i++) bc
, p} { D&HV6# fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), i#%aTRKHd6 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), G,;,D9jO7 nStartPos,nEndPos,i); EyY.KxCB Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ~b{Gz6u> fileSplitterFetch.start(); ;[RZ0Uy= } nx0K$Ptq // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), +cU>k} siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); sB69R:U; // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 8w({\= nEndPos = " + nFileLength); ;gC| // fileSplitterFetch[nPos.length-1].start(); |yo\R{&6 V.wqZ {G 64:fs?H //等待子线程结束 mo~*C //int count = 0; p }[zt#v //是否结束while循环 Gycm,Cy boolean breakWhile = false; ktDC/8 >
xIJE2 ja=F 7Usb while(!bStop) Zw
wqSyuGf { ^&g=u5
d0 write_nPos(); wcDRH)AW. Utility.sleep(500); VbBPB5 $q breakWhile = true; u{["50~ ]
}f9JNf$ >vo=]cw for(int i=0;i<nStartPos.length;i++) y\{%\ $ { ax
41N25 if(!fileSplitterFetch.bDownOver) DNP13wp@ { C*nB breakWhile = false; }MUn/ [x break; gk`zA } Z4IgBn(Z_} } '=P7""mN5 if(breakWhile) %,ngRYxT# break; Le%ZV%, F: mq'<Q 0Ia($.1mY //count++; q\H[am //if(count>4) ,]b~t0|B // siteStop(); k%^lF?_0I } tDAhyy73 3j3N!T9 Fv<`AU System.err.println("文件下载结束!"); r1fGJv1!o } B7]MGXC catch(Exception e){e.printStackTrace ();} ]vuwkn+) } _ 84ut XV^1tX>f{ Hty0qr3 //获得文件长度 ,-z9 #t public long getFileSize() KF4PJi;* { z5TuGYb< int nFileLength = -1; %6_AM try{ N!`e}Z6S URL url = new URL(siteInfoBean.getSSiteURL()); z3uW)GQ. HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); yv)ux:P&+ httpConnection.setRequestProperty("User-Agent","NetFox"); d:yqj: ~Ch+5A; NzNA>[$[ int responseCode=httpConnection.getResponseCode(); aN(|'uO@ if(responseCode>=400) qoAj]
") { c_elShK8# processErrorCode(responseCode); \rPbK+G. return -2; //-2 represent access is error O(_[ayE } &5:tn=E (e"iO`H ^n+ !4(@= String sHeader; *YlV-C<}W" >$ 2V%}; "le>_Ze_>| for(int i=1;;i++) p0pWzwTG3 { @}kv-* //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); VcoOeAKL //Utility.log(in.readLine()); *_ ?dVhxf sHeader=httpConnection.getHeaderFieldKey(i); dXnl'pFS if(sHeader!=null) Gm\/Y:U { Gdg"gi!4 if(sHeader.equals("Content-Length")) Ge<nxl<Bd { 3N_"rNKD nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Bp@v,)8* break; a+Ac[> } wg w(YU } 'R_g">B. else 4Fm90O break; rl0< Ls } 8.[SU } 'e6WDC1Am( catch(IOException e){e.printStackTrace ();} 7k8 pZ catch(Exception e){e.printStackTrace ();} JY6
Qp XU"~h64] {GJ@psG* Utility.log(nFileLength); J(6oL i'\T R|qd P@FHnh3}Z$ return nFileLength; DY^;EZ!hb } 0tU.( QV\eMuNy ` Jdb ; //保存下载信息(文件指针位置) a1@Y3MQ;i private void write_nPos() %HJK; { @!1x7%]G try{ J7g8D{4 output = new DataOutputStream(new FileOutputStream(tmpFile)); \QCJ4}\CS output.writeInt(nStartPos.length); Dbz3;t for(int i=0;i<nStartPos.length;i++) ^t#&@-'(d { aSnFKB // output.writeLong(nPos); eYvWZJa4 output.writeLong(fileSplitterFetch.nStartPos); 55fC~J< output.writeLong(fileSplitterFetch.nEndPos); ^=-y%kp" } Sb82}$sO output.close(); K9up:.{QQ } Qr{E[6 catch(IOException e){e.printStackTrace ();} @nCd catch(Exception e){e.printStackTrace ();} 5f 5f0|ok } :w^Ed%>y7 #e$5d>j( ]'=)2
.} //读取保存的下载信息(文件指针位置) W}mn}gTQ private void read_nPos() >: g3k { N <Xq]!
K- try{ z.;ez}6%V DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 71t*% int nCount = input.readInt(); lp^<3o*1 nStartPos = new long[nCount]; Ev}C<zk* nEndPos = new long[nCount]; #*UN >X for(int i=0;i<nStartPos.length;i++) $[a8$VY^Cm { 0a XPPnuX nStartPos = input.readLong(); ]Yn_}Bq nEndPos = input.readLong(); Y<%@s}zc } UWo]s. input.close(); pz.JWCU1 } XLrwxj0 catch(IOException e){e.printStackTrace ();} }*S `qW;B catch(Exception e){e.printStackTrace ();} yvO{:B8% } |M,iM] #6HA\dE t,+nQ9 private void processErrorCode(int nErrorCode) )u`[6,d { 85Otss/mM System.err.println("Error Code : " + nErrorCode); y1+*6| } z?*w8kU&> 7\ s"o&G ?b>,9A.Z //停止文件下载 IHv[v*4: public void siteStop() 9^#c|
0T { Evg_q> bStop = true; Eu@huN*/ for(int i=0;i<nStartPos.length;i++) Oagsoik fileSplitterFetch.splitterStop(); c2'Lfgx4 #W.#Hjpp 2Tp1n8FV } M:[ %[+6 }
\kMefU //负责部分文件的抓取 FE (ev 9@ **FileSplitterFetch.java i/`m`qdg */ #Oc]
@ package NetFox; j2StXq3 keX,d# ?IqQ-C)6D import java.io.*; OuID%p"O import java.net.*; (mTE;s( ~O
oidKT $Y/9SV, public class FileSplitterFetch extends Thread { (
+Q&[E"87 i%#+\F.& [ 0KlC1= String sURL; //File URL r") `Ph@yp long nStartPos; //File Snippet Start Position "!ug_'VW long nEndPos; //File Snippet End Position [6%VRqY int nThreadID; //Thread's ID %InA+5s` boolean bDownOver = false; //Downing is over c4^ks&)' boolean bStop = false; //Stop identical g"p%C:NN FileAccessI fileAccessI = null; //File Access interface C.Kh[V\Ut i]YV { %,}A@H, public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException -w}]fb2Q> { C'.L20qW this.sURL = sURL; Bn#?zI this.nStartPos = nStart; j7$e28|_n this.nEndPos = nEnd; Oj3.q#)`Z nThreadID = id; {GK;63`1 fileAccessI = new FileAccessI(sName,nStartPos);//定位 j<VFn~*_ } aW)-?(6> mD$A4Y-'p >~[c|ffyo/ public void run() -.u]GeMy { :t8b39 while(nStartPos < nEndPos && !bStop) @"Fme-~ { s%nUaWp~ %et }A93 .oYl-.E>& try{ :8=i kwQ URL url = new URL(sURL); =jOv] / HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); c[wla<dO* httpConnection.setRequestProperty("User-Agent","NetFox"); aeFe!`F String sProperty = "bytes="+nStartPos+"-"; 6}[I2F_^ httpConnection.setRequestProperty("RANGE",sProperty); A+ZK4]xb Utility.log(sProperty); la0BiLzb] ([T>.s =.f-w0V InputStream input = httpConnection.getInputStream(); ;c-(ObSm //logResponseHead(httpConnection); 1 d}Z(My p*4':TFuD; H]{v;;'~ byte[] b = new byte[1024]; C*)3e*T* int nRead; GP!?^r:en while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ^84G%)`& { U@_dm/;0& nStartPos += fileAccessI.write(b,0,nRead); EUD~CZhS"k //if(nThreadID == 1) ,
pDnRRJ! // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); %p^wZtm } Xx."$l :DrWq{4 `w#Oih!6A| Utility.log("Thread " + nThreadID + " is over!"); [R(`W#W bDownOver = true; Y!~49<; //nPos = fileAccessI.write (b,0,nRead); $+8cc\fq } Pk{_(ybaY catch(Exception e){e.printStackTrace ();} =9y[1t } LSa,1{ } p4.wh|n Se:.4< 2,$8icM //打印回应的头信息 Cc+t}"^ public void logResponseHead(HttpURLConnection con) l2zFKCGF( { @Owb?(6? for(int i=1;;i++) we~[ ]
\
{ :q$.,EZ4#n String header=con.getHeaderFieldKey(i); V)Z}En["1 if(header!=null) >Wm`v.- //responseHeaders.put(header,httpConnection.getHeaderField(header)); q8X feoUV Utility.log(header+" : "+con.getHeaderField(header)); m,*QP* else $UMFNjL
break; Ygm`ZA y } eJF5n# } 8p^bD}lN7 cv-PRH#
?]|\4]zV public void splitterStop() {@H6HqD { yzbx . bStop = true; CJ/X}hi, } x5,++7Tz w k(VR q
MfT>rH } V]|^&A_c Q8:Has !o5
W /* ^W`<gR **FileAccess.java 5A)2} D] *//文件访问(定位,写) |4)>:d package NetFox; ;,C)!c& import java.io.*; WZ-s--n# 0t^M3+nc h;C5hU4P public class FileAccessI implements Serializable{ *rM^;4Zt ,0~^>K //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 G"-?&)M#a RandomAccessFile oSavedFile; (7mAt3n
k long nPos; T%.8'9 %824Cqdc 6*PYFf` public FileAccessI() throws IOException B8nf,dj?X { -E^vLB)O this("",0); bx#>BK! } iQ tNAj o1-m1 <ft j-4VB_N@ public FileAccessI(String sName,long nPos) throws IOException AYt%`Y.! { h%o%fH&F! oSavedFile = new RandomAccessFile(sName,"rw"); gy,ht3 this.nPos = nPos; l Q'I oSavedFile.seek(nPos); )#BMTKA^ } NTdixfR TC@s
\a 5U8shc public synchronized int write(byte[] b,int nStart,int nLen) ]9YJ,d@J { $yn];0$J int n = -1; )<oJnxe] try{ 3)F|*F3R oSavedFile.write(b,nStart,nLen); =!kk|_0%E n = nLen; M`. tf_x } !S^AgZ~ catch(IOException e) T m_bz&Q { yWg@v+ e.printStackTrace (); T_s_p } Y#!UPhg< 4E;VM{ I!^;8Pg return n; !9u|fnC9 } J4QXz[dG 931bA&SL=/ aH 4c02s$ } E[2m&3& N^#ZJoR M}`B{]lLz /* bt"W(m&f **SiteInfoBean.java Ov};e */ Z,RzN5eN package NetFox; aUzBV\Yd} w&$`cD MC?,UDNd% public class SiteInfoBean { gcE|#1> J,V9k[88 )2pbpbWX> private String sSiteURL; //Site's URL {J{+FFsr( private String sFilePath; //Saved File's Path V[{6e private String sFileName; //Saved File's Name CpA|4'# private int nSplitter; //Count of Splited Downloading File qS403+Su1= dq7x3v^"ZG yL%K4$z public SiteInfoBean() y-T| # {//nSplitter的缺省值为5 ^M3~^lV //default value of nSplitter is 5 )`SES." this("","","",5); !Nu<xq@! } ?p9VO.^5 fdxLAC 1QqYQafA public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) L;
T8?+ x { :j5n7s?&=y sSiteURL= sURL; ST2.:v;lb sFilePath = sPath; @Py/K / sFileName = sName; 6FUw"|\u{ this.nSplitter = nSpiltter; N96jJk ~Fe${2 )i~cr2Hk } ~J5+i9T.) 1q~+E\x tkVbo.[8K public String getSSiteURL() pA`+hQNN { nA?`BOe( return sSiteURL; hhSy0 } XUM!Qv $k|g"9 G %N
$C public void setSSiteURL(String value) stG~AC { 8;z6=.4xtg sSiteURL = value; IYqBQnX}oM } @En^wN g3Ec"_>P Mx6@$tQ% public String getSFilePath() M^MdRu { l*ayd>`~x return sFilePath; \qR7mI/* } `Y
BC -#0qV:D tna .52*/ public void setSFilePath(String value) @xQgY*f# { *n;!G8\ sFilePath = value; AcS|c:3MUy } O>qll6]{@ `D>S;[~S7 ~Cl){8o public String getSFileName() #OBJzf*p { 6S\C}U/ return sFileName; >C7r:% } Cnnh7` ^:6{2 2C{ WxW7qt public void setSFileName(String value) ~;O v-^tp { 3Th'p aMG sFileName = value; 09dK0H3( } bQE};wM, k xP-,MD uJOJ-5}yt public int getNSplitter() (H)2s Y { 4 d;|sI@ return nSplitter; VK}fsOnj0 }
QN@CPuy 0="%Y^N &?VQ,+[< public void setNSplitter(int nCount) tDSJpW'd { (]b!{kS nSplitter = nCount; =fu
:@+ } w<zIAQN } Ks=>K(V6 Z&ZP"P4 =NOH:#iQ /* [OHxonU **Utility.java |\QgX%
*/ Rz(QC\( package NetFox; -9"['-WH, 'I_Qb$ 0zo?eI public class Utility { 9dFy"yxYa +cIUGFp} k9)jjR*XxG public Utility() PH `9MXh { @[5xq J%x6 xm%Um\Pb7 } =jlt5 z VGtC)mG8) //线程睡眠 &Ts-a$Z7?S public static void sleep(int nSecond) O_$m!5ug { j2Tr$gx< try{ >"gf3rioW Thread.sleep(nSecond); W4[V}s5u } -cZDGt catch(Exception e) :80Z6F.k` { ZaeqOVp/j e.printStackTrace (); *_R]*o!W' } [E+$?a= } HHiT]S9 W- i&sUgy //日志 Z^V6K3GSz- public static void log(String sMsg) N5* u]j { +u!0rLb System.err.println(sMsg); #Xhdn\7 } P/xKnm~ K#*reJ}K !lEY=1nHOJ public static void log(int sMsg) SxdE?uCUS { (ohq0Y System.err.println(sMsg); lrnyk(M}Q. } *F
?8c } U"q/rcA )E6;-rD0^+ b`)){LR /* m_=$0m J$ **TestMethod.java ^dP KDrKxh */ *:>"q ej package NetFox; mocI&=EF2X D@.tkzU@E 7h6,c /< public class TestMethod { VUVaaOmO P8^hBv* { T4 public TestMethod() `VKf3&|<A { ///xx/weblogic60b2_win.exe {z(xFrY try{ .uyGYj-C SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); =Vy`J)z9 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); &8%e\W\K:/ SiteFileFetch fileFetch = new SiteFileFetch(bean); Y]{
>^`G fileFetch.start(); Swp;HW7x } |AcRIq catch(Exception e){e.printStackTrace ();} fRy^Q_~, -:30:oq ~n[xtWO0 } ox:[f9.5 +x_Rfk$fb (4'$y`Z public static void main(String[] args) T%6&PrQ7 { rFaF
Bd new TestMethod(); 9so6WIWc } p!sWYui } B*4}GPQ 点击下载更多相关资料
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