-
UID:2537
-
- 注册时间2006-05-09
- 最后登录2020-05-29
- 在线时间3小时
-
- 发帖8
- 搜Ta的帖子
- 精华
0
- 铜板1641
- 人品值95
- 贡献值0
- 交易币0
- 好评度8
- 信誉值0
- 金币0
-
访问TA的空间加好友用道具
- 发帖
- 8
- 铜板
- 1641
- 人品值
- 95
- 贡献值
- 0
- 交易币
- 0
- 好评度
- 8
- 信誉值
- 0
- 金币
- 0
- 所在楼道
|
/* 5/VB'N#7s **SiteFileFetch.java xa axj */ _ r)hr7 package NetFox; [ESQD5& import java.io.*; o sH,(\4_ import java.net.*; @ dU3d\!} 4'e8VI0 ue2nfp public class SiteFileFetch extends Thread { hA19:H=7R0 hLA=7 v=^)`C6Ma SiteInfoBean siteInfoBean = null; //文件信息Bean V0&QEul long[] nStartPos; //开始位置 ;SP3nU)) long[] nEndPos; //结束位置 ZQ8Aak FileSplitterFetch[] fileSplitterFetch; //子线程对象 tm#y`1- long nFileLength; //文件长度 JS.'v7 boolean bFirst = true; //是否第一次取文件 g5HqU2 boolean bStop = false; //停止标志 43]&SXprH File tmpFile; //文件下载的临时信息 oU6g5 DataOutputStream output; //输出到文件的输出流 K&oO+ G^f {.)~4.LhQM //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) T1TZ+\ public SiteFileFetch(SiteInfoBean bean) throws IOException ~}l,H:jk@ { `I:,[3_/ siteInfoBean = bean; +0042Yi //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); n8ya$bc tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); h$h`XBVZe; if(tmpFile.exists ()) /]>{"sS( { *wx^mB9 bFirst = false; #FM 'S| read_nPos(); O!yn
`<l } ^^(ZK 6 d else Wm/k(R`O< { akoKx)(< nStartPos = new long[bean.getNSplitter()]; ]8z6gDp nEndPos = new long[bean.getNSplitter()]; `Hu;Gdj= } M|u5Vs1 pAL-Pl9z |n%N'-el )[Cm*Xxa$ } PQ|x?98 |"*:ZSj Sgy~Z^ public void run() JFkjpBS { L{Zy7O]"d //获得文件长度 ,4$J|^T& //分割文件 CK#PxT?" //实例FileSplitterFetch jC7XdYp //启动FileSplitterFetch线程 mw%_yDZ{ //等待子线程返回 #&gy@!a~ try{ t:n|0G( if(bFirst) X;g|-< { v2g+oKO] nFileLength = getFileSize(); Y5pNKL if(nFileLength == -1) {1ceF { (]dZ+"O{ System.err.println("File Length is not known!"); <H#K `|Ag } j3F=P else if(nFileLength == -2) *mtv[ { E':Z_ ^4 System.err.println("File is not access!"); zK;t041e } 351'l7F\ else Re>e|$.T { }_TdXY
#w\ for(int i=0;i<nStartPos.length;i++) u'][3 { .;s4T?j@w nStartPos = (long)(i*(nFileLength/nStartPos.length)); ak&v/%N } ;c}];ZU3G for(int i=0;i<nEndPos.length-1;i++) lvffQ_t { <GEn9;\
nEndPos = nStartPos[i+1]; BW[K/l~"$: } K.I r+SB nEndPos[nEndPos.length-1] = nFileLength; &Gl&m@-j } _FgeE`X } djM=QafB:C p:))ne:7 |+''d //启动子线程 HB:i0m2fJW fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; !9NAm?Fw for(int i=0;i<nStartPos.length;i++) F*H}5yBp_: { 2e=Hjf
)
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), $4]PN2d& siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), gd*?kXpt nStartPos,nEndPos,i); c^%k1pae( Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); +UtK2<^:o fileSplitterFetch.start(); egvWPht'_ } <hdCO<
0( // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), `$HO`d@0*R siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); %cL:*D4oz // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", TMBdneS-s nEndPos = " + nFileLength); /0(KKZ) // fileSplitterFetch[nPos.length-1].start(); RB!E>] nm.d.A/]Z %{"STbO #> //等待子线程结束 hW&UG#PY> //int count = 0; hd' n" //是否结束while循环 N0f}q1S<-A boolean breakWhile = false; m~A/.t%= t=#)3C`Q} I 3PnyNZ while(!bStop) E83nEUs { Cz%ih#^b write_nPos(); 71InYIed Utility.sleep(500); YoA$Gw2 breakWhile = true; O&uOm:/( Pe.D[]S We2=|AB for(int i=0;i<nStartPos.length;i++) I(SE)%!%S { |)?T([ if(!fileSplitterFetch.bDownOver) U$}]zaB { w.\:I[ breakWhile = false; th{h)( +H break; vP!gLN]TV } ;d4_l:9p } ;f\0GsA# if(breakWhile) Nx__zC^r break; 5ZLH=8L
'(}BfD P VTU-'q //count++; Rx.0P6s //if(count>4) \kx9V|A' // siteStop(); =v8q } t!tBN ;uy/Vc5,Y w# ['{GL System.err.println("文件下载结束!"); Y9N:%[ :>W } (;N_lF0 catch(Exception e){e.printStackTrace ();} 0ro+FJ r } a/1{tDA I5mS!m/X -oj@ c
OZ //获得文件长度 ;_!;D#: public long getFileSize() ?a%
u=G { ?(z3/"g] int nFileLength = -1; |NqQKot1 try{ lz>hP URL url = new URL(siteInfoBean.getSSiteURL()); "F&uk~ b$ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 827N?pU$) httpConnection.setRequestProperty("User-Agent","NetFox"); |8"HTBb\CW WW.=>]7; 2rk_ ssvs int responseCode=httpConnection.getResponseCode(); [(hENX}o: if(responseCode>=400) (Jm_2CN7X { (`&g processErrorCode(responseCode); \)bwdNWI return -2; //-2 represent access is error #oaX<, } 7K~=Q Ec g?ft;kR6S uv$y"1'g String sHeader; (+@H !>r$$ 4s~o
01J.XfCd6 for(int i=1;;i++) H:`r!5&Qb5 { JW$#~"@r //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); BmZd,}{ //Utility.log(in.readLine()); )9$Xfq/ sHeader=httpConnection.getHeaderFieldKey(i); ;]gph)2cd if(sHeader!=null) @S{,g;8 { y(HR1vQ;Z if(sHeader.equals("Content-Length")) w*?JW { F
1BPzRo` nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); $ _zdjzT break; +#O?sI# } ppxu\a } W\"cp[b else <B)lV'!Bd break; QS[%`-dR2 } n%Fa;!S } ,,?t>|3 catch(IOException e){e.printStackTrace ();} a}yJ$6xi catch(Exception e){e.printStackTrace ();} 'uh6?2)wG 2axH8ONMu c7'Pzb)' Utility.log(nFileLength); &{>~|^ /)|*Vzu GB0] |z5 return nFileLength; OHB!ec6W } &{$\]sv =T1i(M# tw;`H( UZ^ //保存下载信息(文件指针位置) {2,V3*NF private void write_nPos() ^'}Td~( { h'
16"j> try{ >y1/*)O9~ output = new DataOutputStream(new FileOutputStream(tmpFile)); nD!^0? output.writeInt(nStartPos.length); SkY|.w. for(int i=0;i<nStartPos.length;i++) %FwLFo^v { 1iUy*p65: // output.writeLong(nPos); 6d_l[N output.writeLong(fileSplitterFetch.nStartPos); Cu}Rq!9i output.writeLong(fileSplitterFetch.nEndPos); `.n[G~*w~1 } SQ@@79A output.close(); +!X^E9ra } sGV%O=9?2 catch(IOException e){e.printStackTrace ();} wJ{M&n1H catch(Exception e){e.printStackTrace ();} :g Ze> } Ih.o;8PpK aFLm, JV@>dK8 //读取保存的下载信息(文件指针位置) ce@(Ct private void read_nPos() q*2ljcb5 5 { il*bsnwpZv try{ )J0'We DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); IuPwFf) int nCount = input.readInt(); DJeG nStartPos = new long[nCount]; b.$Gc!g nEndPos = new long[nCount]; =!7yX;| for(int i=0;i<nStartPos.length;i++) K%S k{' { Zf|f $1- nStartPos = input.readLong(); 8Y:bvs.j nEndPos = input.readLong(); C6GYhG] } SwQb" input.close(); 0%vXPlfnY } $"sf%{~ catch(IOException e){e.printStackTrace ();} BONM:(1 catch(Exception e){e.printStackTrace ();} 55Jk "V#8 } Q|:\ WFtxEIrl3j GX\/2P7CZ private void processErrorCode(int nErrorCode) =\tg$ { % nJ'r?+h System.err.println("Error Code : " + nErrorCode); C0'Tua' } GMFp,Df ++xEMP) >zXw4=J //停止文件下载 9^`G `D public void siteStop() ndN8eh:OR { P\SE_*& bStop = true; 1h|JKu0 for(int i=0;i<nStartPos.length;i++) 8%Pjx7'< fileSplitterFetch.splitterStop(); zL1H[}[z+ 2OEOb,` #qHo+M$" } *Bc=gl$ } RzXxnx)]q //负责部分文件的抓取 R:=i/P/ **FileSplitterFetch.java o: TO[ */ nsYS0 package NetFox; &AC-?R|Dp ;[&g`%-H< a Z
^SK|E import java.io.*; 7|\[ipVX:3 import java.net.*; `XQM)A ,_p_p^Ar\4 ]ZZ7j public class FileSplitterFetch extends Thread { b bX2D/ \S3C"P%w /8lGP!z String sURL; //File URL amOBUD5Ld` long nStartPos; //File Snippet Start Position 9J*m!-hOY long nEndPos; //File Snippet End Position P$\(Bd\76 int nThreadID; //Thread's ID W%)
foJ boolean bDownOver = false; //Downing is over SxNs boolean bStop = false; //Stop identical ^qGH77#z FileAccessI fileAccessI = null; //File Access interface #|)GarDG C^]bXIb Bx;bc public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException dX` _Y { Qr$uFh/y this.sURL = sURL; {V,rWg this.nStartPos = nStart; HX?5O$<<N this.nEndPos = nEnd; EPW
Iu)A nThreadID = id; ,:j^EDCsaJ fileAccessI = new FileAccessI(sName,nStartPos);//定位 oljl&tuQy } + ,0RrD ) }fUV*U:3 7'd_]e-. public void run() TAIcp*)ZM { IYb@@Jzo while(nStartPos < nEndPos && !bStop) >(p "! { ~%m-}Sxc 2 ES .)pQ d2Bn`VI try{ 1P@&xcvS\ URL url = new URL(sURL); ="z\ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); f?[IwA` httpConnection.setRequestProperty("User-Agent","NetFox"); b2duC String sProperty = "bytes="+nStartPos+"-"; e%o6s+" httpConnection.setRequestProperty("RANGE",sProperty); >DpnIWn Utility.log(sProperty); rQ
LNo, "EDn;l-Q p~En~?< InputStream input = httpConnection.getInputStream(); 3T%WfS+ //logResponseHead(httpConnection); aa8WRf }r9f}yX9Q 3;@t{rIin byte[] b = new byte[1024]; _z#zF[% int nRead; 77.5
_ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) RV.*_FG { x=gZ7$?A nStartPos += fileAccessI.write(b,0,nRead); A7 E*w //if(nThreadID == 1) /!ux P~2U // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); !zVuO*+ } Ay22-/C|@ 7?dB&m6W n@Y`g{{e~ Utility.log("Thread " + nThreadID + " is over!"); JY~s-jxa bDownOver = true; /)e&4.6 //nPos = fileAccessI.write (b,0,nRead); x?VX,9;j } &S]\)&Yt catch(Exception e){e.printStackTrace ();} -6aGcPq } 5a&[NN } fYl$$. A!x_R {,yH NyFa2Ihd //打印回应的头信息 pg ;agtI public void logResponseHead(HttpURLConnection con) S2@[F\|r { 120<(# for(int i=1;;i++) D9 OS,U/l { (G*--+Gn String header=con.getHeaderFieldKey(i); gQCkoQi:j if(header!=null) h1:uTrtA //responseHeaders.put(header,httpConnection.getHeaderField(header)); ,yNPD}@v> Utility.log(header+" : "+con.getHeaderField(header)); .yd{7Te else 80x
%wCY` break; 3 8m5&5)1F } FDkRfh K } nxA Y]Q Z;P[)q /#GX4&z public void splitterStop() JnlM0jc]` { =;9Wh!{ bStop = true; Y7zg } s0~a5Ti3 r=~yUT 1>[3(o3t } *1$rg?yGf `_N8AA ;^^u _SuH /* tz4MT_f **FileAccess.java VrD?[&2pE *//文件访问(定位,写) 7%c9 nY package NetFox; Ks(+['*S import java.io.*; . Zrt/; pLE|#58I @0; 9.jml, public class FileAccessI implements Serializable{ ]8NNxaE3 ( !k)}p_e //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 ;XMbjWc RandomAccessFile oSavedFile; Zrr3='^s long nPos; mqrP0/sN Q.*qU,4); f<=
#WV public FileAccessI() throws IOException <x,u!}5J { F42r]k this("",0); H[wJ; l } Py^F},?J +y! dU{L^ iW(HOsA public FileAccessI(String sName,long nPos) throws IOException sU^2I v\% { Ol`/r@s oSavedFile = new RandomAccessFile(sName,"rw"); N6S0(% this.nPos = nPos; s4<[f%^ oSavedFile.seek(nPos); 9x0B9& } (\{9W r /63 mT
<4@RrB public synchronized int write(byte[] b,int nStart,int nLen) YAv-5 { E{[c8l2B int n = -1; mk2T try{ f ?_YdVZ oSavedFile.write(b,nStart,nLen); ^o+2:G5z} n = nLen; bHH{bv~Z } *6sB$E_y catch(IOException e) "
;_bB"q* { !@{_Qt1 e.printStackTrace (); 1&\_|2 } GNS5v-"H [u;]J* kj~)#KDN return n; -==@7*x!Z } ~
'
81 BG_m}3j ~aQ>DpSEf } .Qg!_C kSv?p1\@&P $qYtN`b, /* d/!sHr69 **SiteInfoBean.java "IA[;+_" */
T8h.!Vef package NetFox; sesr`,m., B$1nq#@ 1k6f|Al- public class SiteInfoBean { Wp/!; *[*LtyCQt4 5V!L~# private String sSiteURL; //Site's URL TS^(<+' private String sFilePath; //Saved File's Path mf=, 6fx28 private String sFileName; //Saved File's Name =K I4 private int nSplitter; //Count of Splited Downloading File JryDbGc8 k!H;(B"s- /6B!&b2f public SiteInfoBean() @a#qq`b; {//nSplitter的缺省值为5 VQ5T$,& //default value of nSplitter is 5 v|t_kNX;v* this("","","",5); ge)g ?IP4 } /Mb?dVwA =B4U~|k {(]B{n public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) s
Z(LT'} { 2hdi)C,7Y sSiteURL= sURL; O Ul+es sFilePath = sPath; M,"4r^%k sFileName = sName; _m;0%]+ this.nSplitter = nSpiltter; EKZ40z` ?vPw I EgM.wQHR] } +Gqh yx"xbCc# )28Jz6.I public String getSSiteURL() osyY+)G'sV { ,LKY?=T$z return sSiteURL; YNA %/ } {\[u2{ b2u_1P\ "(5A5> public void setSSiteURL(String value) *q_
.y\D { FKY|xG9 sSiteURL = value; Yxz(g] } fp|!LU 9-[g/qrF o)F^0t public String getSFilePath() *X+T>SKL { $J"}7+ return sFilePath; jo{[*]Oa } ~j}di^<{ dy N`9 \2 &)b public void setSFilePath(String value) {c`kC]9 { }C!N$8d, sFilePath = value; lfG]^id' } tX$%*Uy #X'!wr|- KGdL1~ public String getSFileName() @;2,TY>Di { 8`XpcK-0 return sFileName; zRN_`U } 0^nnR7 Z7%
|'E R W=41jw public void setSFileName(String value) \_}Y4 { w G[X*/v sFileName = value; EL$l .
v } =Y#)c]` %$|=_K)Ks ~f0Bu:A) public int getNSplitter() NF&R}7L { gd^1c}UZX return nSplitter; )D_# } ,!_$A}@0
^ {%X /w'| RX}6H<5R public void setNSplitter(int nCount) VeeQmR?u- { Tu95qL~^ nSplitter = nCount; \72(d } fvK):eCo } ?RJ
)u (Em^qN uq~$HXdc /* Cp=DdmR **Utility.java >Pj ?IE6 */ v?BX 4FO package NetFox; hZf0q 2 LnP={s 0*S]m5#; public class Utility { Gh}sk-Xk= IOmQ1X7, (b%&DyOt public Utility() 8sjAr.iT. { F+
qRC_C>O 1^^<6e Wcd;B7OH } 4^\5]d! 8gWifx
#N //线程睡眠 CIAHsbn.A public static void sleep(int nSecond) Lb;:< { SVWtKc< try{ 4%>iIPXi.( Thread.sleep(nSecond); Uu
~BErEC } SE/GT:} catch(Exception e) *-"DZ { Wm\HZ9PN e.printStackTrace (); unu%\f>^4 } Tl"GOpH\] } m [7@l }@%A@A{R //日志 ,paD/ public static void log(String sMsg) L]I ;{Y { !j[Oyr| System.err.println(sMsg); h}r64<Y2{ } ?4v&TB@ Jk=E"I6 :E'uV"j% public static void log(int sMsg) N
GP}Z4 { 9nF;$HB System.err.println(sMsg); W@U<GF1 } w:%3]2c } `%_ yRJd|; e<o{3*%p) OhMnG@@ /* '&?cW#J? **TestMethod.java wh8h1I
*/ :4RD.l package NetFox; N T+%u- |35"V3bs OXc!^2^ public class TestMethod { w/+e 1}nrVn[B9 ~k>H4hV3 public TestMethod() ?IgM=@ { ///xx/weblogic60b2_win.exe
%GS^=Qr try{ j_L1KB* SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); ^y:!=nX^ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 1t7 vP; SiteFileFetch fileFetch = new SiteFileFetch(bean); l]tda( fileFetch.start(); CqHCJ ' } k$]-fQM catch(Exception e){e.printStackTrace ();} }4G/x;D W$&{jr-p #nG?}*# } =(\
/+
0-[ 2MS-e}mi vzDoF0Ts*p public static void main(String[] args) AA$+ayzx9{ { nGb%mlb new TestMethod(); h# R;'9*V } j$v2_q } $&D$Uc`U> 点击下载更多相关资料
|