-
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
|
/* r2F **SiteFileFetch.java
)P9{47 */ A.C278^O8 package NetFox; 6O@ ^`T import java.io.*; Fp6[W5>(- import java.net.*; ,#jhKnk2e [(hvK{) (6#yw`\ public class SiteFileFetch extends Thread {
1C,C) R{xyme@"^ BOiz ~h6 SiteInfoBean siteInfoBean = null; //文件信息Bean 9H, &nET long[] nStartPos; //开始位置 .UhBvHH long[] nEndPos; //结束位置 ;ko[(eFN@ FileSplitterFetch[] fileSplitterFetch; //子线程对象 .m]=JC5' long nFileLength; //文件长度 P2Qyz}!wo boolean bFirst = true; //是否第一次取文件 )4L%zl7 boolean bStop = false; //停止标志
2HK File tmpFile; //文件下载的临时信息 Rp`_Grcd DataOutputStream output; //输出到文件的输出流 HMS9y%zl/ H, XLb. //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ci_v7Jnwo public SiteFileFetch(SiteInfoBean bean) throws IOException NzeI/f3K5 { HLoQ}oK|K siteInfoBean = bean; Y9@dZw%2 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); w^'?4M! tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); r0g/ :lJi if(tmpFile.exists ()) Msa6yD# { VkTlPmr bFirst = false; VM]GYz|#] read_nPos(); u_6BHsU } Q{l*62Bx else rTsbP40 { ^`jZKh8)h nStartPos = new long[bean.getNSplitter()]; Dd5xXs+c nEndPos = new long[bean.getNSplitter()]; H?`)[# } 4$?wD < d(DX(xg jqX@&}3@ 4g 6ksdFQ } pe!dm}!h[ o1#:j?sN GIRSoRVsh public void run() s?@)a,C%k { F[7Kw"~J //获得文件长度 znQ'm^ h //分割文件 U7]<U-.& //实例FileSplitterFetch Xb<DpBrk //启动FileSplitterFetch线程 0tW<LR-}E //等待子线程返回 F%PwIB~cy try{ `\/toddUh[ if(bFirst) T}n}.JwU { dq
YDz nFileLength = getFileSize(); [:nx);\ if(nFileLength == -1) eC>"my` { y^mWG1"O System.err.println("File Length is not known!"); (Pk"NEP } S(>@:`= else if(nFileLength == -2) m feMmKFu\ { RHwaJ;:)# System.err.println("File is not access!"); d)04;[= } m/YH^N0 else ocIt@#20K { 6%gB
E for(int i=0;i<nStartPos.length;i++) p{ @CoOn { 2SDh0F nStartPos = (long)(i*(nFileLength/nStartPos.length)); MvFM, } ]a$Wxvgq for(int i=0;i<nEndPos.length-1;i++) >H0) ph { J Q)4}t nEndPos = nStartPos[i+1]; ioC@n8_[G } hWq.#e6 nEndPos[nEndPos.length-1] = nFileLength; O!+nF]V4f } QP6z?j. } May&@x/oMS 7$!`p,@we/ |Z`M*.d+ //启动子线程 O^.%C`* fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; *:=];1O for(int i=0;i<nStartPos.length;i++) v!NB~"LQ { Q~fwWp-J fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ! jbEm8bt siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 5/& 1Oxo nStartPos,nEndPos,i); cPpu Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); nK+lE0 fileSplitterFetch.start(); I2TD.wuIW } ![^EsgEB* // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), B0f_kH~p~ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 3g4e']t // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Dn~Z SrJ nEndPos = " + nFileLength); +yzcx3< // fileSplitterFetch[nPos.length-1].start(); <=q*N;=T, r%0pQEl G1}~.%J //等待子线程结束 JXpoCCe //int count = 0; hVMYB_<~ //是否结束while循环 y L*LJ boolean breakWhile = false; YecT 96% h^}_YaT\ n
vm^k while(!bStop) B;VH `*+X { hlX>K write_nPos(); $bk>kbl P Utility.sleep(500); b.QpHrnhtK breakWhile = true; _ 1sP.0 t >G]? UM<@t%|> for(int i=0;i<nStartPos.length;i++) brb[})} { :Df)"~/mO+ if(!fileSplitterFetch.bDownOver) "X`RQ6~]> { hQXxG/yFm breakWhile = false; _*Pfp+if break; &]w#z=5SXi } D/Rv&>Jh } .N5'.3 if(breakWhile) z; J break; 9hy'DcSy, &`\ ep9 /mc*Hc8R8 //count++; s}wO7Df=+ //if(count>4) i<mevL
// siteStop(); `aIG;@Z } _74UdD{^o H.:9:I[n {gsW(T>) System.err.println("文件下载结束!"); Jz0K}^Dj[ } T8U[xu.> catch(Exception e){e.printStackTrace ();} _
\l
HI } x@Y|v@}BE .:8[wI_f bhYU5I 9 //获得文件长度 v; Es^
YI public long getFileSize() !
tGiTzzp { Hq?& Qo int nFileLength = -1; Tv\HAK<N try{ c}%es=@ URL url = new URL(siteInfoBean.getSSiteURL()); BhLZ7 * HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); hfg
O httpConnection.setRequestProperty("User-Agent","NetFox"); %*jGim~s PK+ x6]x ;|!MI'Af int responseCode=httpConnection.getResponseCode(); RJx{eck% if(responseCode>=400) S6GMUaR { .Vmtx processErrorCode(responseCode); )!eEO [\d return -2; //-2 represent access is error F$h'p4$T } 4:U0f;Fs `E W!-v) \-OC|\{32 String sHeader; E5gl ^Q?Z @^!\d#/M 'irGvex for(int i=1;;i++) +*C^:^jA { EjSD4 //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); pDOM:lGya //Utility.log(in.readLine()); A#35]V06 sHeader=httpConnection.getHeaderFieldKey(i); ,]7XMU3 if(sHeader!=null) i=L8=8B` { Hd0Xx}3& if(sHeader.equals("Content-Length")) VhvTBo<cw { VjB*{, nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ]RD5Ex!K? break; | ]# +v@ } RM,'o[% } 2ce'fMV else q5p e~ break; BFh$.+D } EeB3 } } r?^"65= catch(IOException e){e.printStackTrace ();} 1Nj=B_T catch(Exception e){e.printStackTrace ();} 6m+W#]^ &$#99\/ h$Tr sO Utility.log(nFileLength); h<Wg 3o ltSh'w0 <KLg0L<W return nFileLength; FJwt?3\u5 } V#J"c8n oLS7`+b$ 0`n
5x0R //保存下载信息(文件指针位置) 7Z0/(V.- private void write_nPos() C[8Kl D { 9p`r7: try{ <hv7s,i output = new DataOutputStream(new FileOutputStream(tmpFile)); *1bzg/T< output.writeInt(nStartPos.length); GNU;jSh5 for(int i=0;i<nStartPos.length;i++) \_VmY!I5\ { ?3jdg ]& // output.writeLong(nPos); y|sma;D output.writeLong(fileSplitterFetch.nStartPos); tjxvN 4l output.writeLong(fileSplitterFetch.nEndPos); _z8;lt } Pp*}R2 output.close(); k1fRj_@WPT } 5v9uHxy catch(IOException e){e.printStackTrace ();} Rla4L`X; catch(Exception e){e.printStackTrace ();} WZ?!!
} 9":2"<'+ ]l[2hy=
cV &fSTR-8ev# //读取保存的下载信息(文件指针位置) |zpx)8Q private void read_nPos() .pvxh|V { 2Va4i7"X\ try{ nwf7M#3d DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); !8$RBD % int nCount = input.readInt(); O<GF> nStartPos = new long[nCount]; frqJN nEndPos = new long[nCount]; lIh[|] for(int i=0;i<nStartPos.length;i++) ]k*1KP { 'ere!:GJD nStartPos = input.readLong(); 7lU.Nit nEndPos = input.readLong(); lLCdmxbT } #C\4/g?=, input.close(); 4*M@]J " } 5@P-g catch(IOException e){e.printStackTrace ();} 3hS6jS catch(Exception e){e.printStackTrace ();} xo
WT*f } L'9N9CR{i 6[?}6gQ (vQ+e private void processErrorCode(int nErrorCode) <xn;bp[ {
}B ff,q System.err.println("Error Code : " + nErrorCode); 8Rxc&`_X } 3ATjsOL VJ{pN ~_1 Vk7=7%xW //停止文件下载 )i!^]| $ public void siteStop() Kx6y"
{me| { g-@h>$<
1 bStop = true; j|K.i/ for(int i=0;i<nStartPos.length;i++) dWR1cvB(wY fileSplitterFetch.splitterStop(); @2e2^8X7f C5n?0I9 ZnXejpj)D } arh@`'Q } {4rQ7J4Ux //负责部分文件的抓取 \0AiCMX[ **FileSplitterFetch.java uD)-V;}P@; */ J_xG}d package NetFox; 8A{6j 8D~x\!(p\ P*G+eqX import java.io.*; X\sm[_I import java.net.*; T[.[
g/` (@&I_>2Q i_U}{|j public class FileSplitterFetch extends Thread { 77Q}=80GU; 9L)L|4A.l ^7u#30,}3~ String sURL; //File URL K.DXJ UR long nStartPos; //File Snippet Start Position 1D{#rA.X long nEndPos; //File Snippet End Position {}\CL#~y int nThreadID; //Thread's ID 9
5 H?{ boolean bDownOver = false; //Downing is over X?dfcS*!n boolean bStop = false; //Stop identical H(qm>h$bU FileAccessI fileAccessI = null; //File Access interface p`>d7S>" ')o0O9/; _t-7$d" public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException }uQ${]&D { DO^y;y> this.sURL = sURL; JO1
,TtA this.nStartPos = nStart; h%1Y6$ this.nEndPos = nEnd; 5py R~+ nThreadID = id; 9<cOYY fileAccessI = new FileAccessI(sName,nStartPos);//定位 Q}P-$X+/ n } 6?SFNDQ"C Tf-CEHWD oI@9}* public void run() %v4
[{ =fE { l$XA5#k
while(nStartPos < nEndPos && !bStop) ,")F[%v { Z"tQpJg Z .Pi0c+ _01Px a2. try{ YIOR$ URL url = new URL(sURL); 3k{ @.V?] HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); M+ aEma httpConnection.setRequestProperty("User-Agent","NetFox"); }O*WV 1 String sProperty = "bytes="+nStartPos+"-"; ;[Tyt[
httpConnection.setRequestProperty("RANGE",sProperty); se,Z#H Utility.log(sProperty); &O tAAE kaFnw(xa v*r9j8 InputStream input = httpConnection.getInputStream(); `C'}e //logResponseHead(httpConnection); <]Y[XI(kr d8:C3R c{>|o byte[] b = new byte[1024]; &=zU611, int nRead; :]c=pH while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) Jz$>k$!UD { #F4X} nStartPos += fileAccessI.write(b,0,nRead); ou6j*eSN //if(nThreadID == 1) 8^X]z|[d2 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); j9xXKa5 } ,qy&|4Jz %fpsc_ Dh`=ydI5 Utility.log("Thread " + nThreadID + " is over!"); EcW1;wH bDownOver = true; Zh,]J ` //nPos = fileAccessI.write (b,0,nRead); Wz{%"o } $L&BT 0 catch(Exception e){e.printStackTrace ();} W5/};K\. } M(5D'4. } yW>R RE; qLRE}$P *<kD"m //打印回应的头信息 }ecsGw public void logResponseHead(HttpURLConnection con) C BlXC7_Mi { xid:" y=_& for(int i=1;;i++) A&
=pw# { la702)N{ String header=con.getHeaderFieldKey(i); W 5I=X]& if(header!=null) Ky6+~> //responseHeaders.put(header,httpConnection.getHeaderField(header)); B^m!t7/, Utility.log(header+" : "+con.getHeaderField(header)); ' =}pxyg else GLcd9|H break; 97]4
:Zv } l/F!Bq[*g } G"C;A`6 qmID-t" C9pnU,[ public void splitterStop() >KHp-|0pv { en%B>]QI bStop = true; hiIyaWU } Y"oDFo, "ZqEP R) `:gYXeR } OA5f} + 8~qlLa>jc %r P ! /* b-4dsz'ai **FileAccess.java uAT/6@ *//文件访问(定位,写) ,\}k~ U99 package NetFox; 8? F
2jv import java.io.*; GVZTDrC N5ci};? 7P
c(<Ui+ public class FileAccessI implements Serializable{ k|5k8CRX LGXZx}4@; //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 S<9gyW RandomAccessFile oSavedFile; "G@E6{/ long nPos; ]6q*)q:` d96fjj~ p_;r%o= public FileAccessI() throws IOException _trpXkQp { e]Puv)S>{8 this("",0); ] .`_,
IO } r;$r=Uf r IBDVFA 03C .Xh=! public FileAccessI(String sName,long nPos) throws IOException C,(j$Id { CxkMhd8qz oSavedFile = new RandomAccessFile(sName,"rw"); ?o8a_9+ this.nPos = nPos; X4Lsvvz%@ oSavedFile.seek(nPos); Agz=8=S% } my]P_mE vyujC`61d g(1"GKg3K public synchronized int write(byte[] b,int nStart,int nLen) y1nP F&_ { yZ ?$8r int n = -1; 2G H)iUmc try{ "7:u0p! oSavedFile.write(b,nStart,nLen); }&C dsCM>2 n = nLen; n00z8B1j(l } 50COL66:7 catch(IOException e) TX&[;jsj { raSF3b/0 e.printStackTrace (); 75<el.'H } } mgVC \6U 2-m' @kS|Jz$iY return n; 4^0\dq } `..EQBM wQ@Zwbx ybC-f'0 } makaI0M HhzkMJR8 w' .'Yu6 /* ShsJ_/C2 **SiteInfoBean.java gfV]^v */ Tq.MubaO package NetFox; <1TlW
~q< cn@03&dAl ex{)mE4Cd public class SiteInfoBean { 7?+5%7- g9M')8a n @T9m}+fR private String sSiteURL; //Site's URL 9zmD6G!}t private String sFilePath; //Saved File's Path 7ZL,p:f private String sFileName; //Saved File's Name HI}pX{.\ private int nSplitter; //Count of Splited Downloading File y?[5jL|Ue ~GAlNIv] 9yO{JgKA public SiteInfoBean() +oE7~64LL {//nSplitter的缺省值为5 +ZY2a7uI //default value of nSplitter is 5 ^qE<yn this("","","",5); `i"$*4#< } PWADbu{+ H( AN|jFSQ' public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) Ry3+/] { b #o}=m sSiteURL= sURL; !#}v:~[A sFilePath = sPath; )6O\WB| sFileName = sName; yBpW#1= this.nSplitter = nSpiltter; )pkhir06t 2+c>O%L Jnh;;< } QO1A976o C:|q'"F }qgqb public String getSSiteURL() D#vn {^c8O { '6Pu[^x return sSiteURL; clPZd } Y yQf 'sT}DX(7M T! &[ public void setSSiteURL(String value) pfJVE { N"q+UCRC sSiteURL = value; CSd9\V } rw}5nv bc0)'a\ rR),~ @]sL public String getSFilePath() w@gl { 89:?.' return sFilePath; u8{@PlS } W<cW;mO
^C,/T2> 7gZVg@ public void setSFilePath(String value) dw{#|| { L.I}-n sFilePath = value; bJG!)3cx } (dO'_s&M]/
Rsa\V6N> aPY>fy^8D public String getSFileName() $BR=IYby {
8;+Hou return sFileName; web8QzLLB } WacU@L $A 7(+OsE Eezlx9b public void setSFileName(String value) -Fok%iQ'5 { K[ Egwk7 sFileName = value; :#Ex3H7 } 2EqsfU*
I {'=Nb
5F >zfZw"mEP public int getNSplitter() **w*hd] { n_xa) return nSplitter; {g:/BFLr# } |Ad6~E+aL- ELkOrV~a{: p0y0T|H^ public void setNSplitter(int nCount) X,JWLS J { D"(3VIglq nSplitter = nCount; s:m<(8WRw } wCC~tuTpr } !rsqr32] n|4D#Bd1w dx?njR /* ^b `>/> **Utility.java o,''f_tRQ| */ [ilv/V< package NetFox; Z.Y;[Y
"e7$q&R
| 'j,Li(@} public class Utility { 0P%|)Ae yK>0[6l eM1;Nl public Utility() Pguyf2/w { :9rhv{6Wp 8a$jO+UvN M:1F@\< } ,0<F3h +O!M> //线程睡眠 }Cq9{0by?a public static void sleep(int nSecond) A2O_pbQti { d`],l\oC try{ ^s(X VVA Thread.sleep(nSecond); 8yo6v3JqC } b\|p catch(Exception e) hZ\W ?r { tU2t oV e.printStackTrace (); I.\f0I'. } T~~$=vP9 } f$S
QhK5` ^B6i6]Pd=9 //日志 `@.s!L(V public static void log(String sMsg) Sp$x%p0 { e'?doP System.err.println(sMsg); \`%Y-!H+v } =!P?/ WoWM d_7Xlp@ public static void log(int sMsg) $E_vCB_ { {7~ $$AR( System.err.println(sMsg); {LJ6't 8y: } 'St= izhd } %d#)({N pA,EUh|H Z2j*%/ /* 3;l>x/amk **TestMethod.java "%f5ltut3 */ JO^
[@ package NetFox; T[[
6p6Tse] |tJ%:`DGw public class TestMethod { FR6I+@ oX~ AW;)_|xM ].f,3itg& public TestMethod() ~S_IU">E { ///xx/weblogic60b2_win.exe XM@i|AK
M0 try{ ?G>TaTiK# SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); ~q|e];tA //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 42LXL*-4 SiteFileFetch fileFetch = new SiteFileFetch(bean); g!Yh=kA'N fileFetch.start(); C<@1H>S4_ } x)wt.T?eL catch(Exception e){e.printStackTrace ();} |QTqa~~B tKsM}+fq
-Fc# }
nK'8Mo A-Pwi.$ jMWwu+w public static void main(String[] args) K/d&c] { 2xdJ(\JWM new TestMethod(); <H@!Xw; } :h^UC~[h 3 } g+r{>x 点击下载更多相关资料
|