-
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
|
/* Jcs
/i **SiteFileFetch.java REi"Aj= */ 2.v`J=R package NetFox; 2~r2ErtS import java.io.*; s=E6HP@q import java.net.*; HL>l.IG? =T?Xph{ ymqn1ja1 public class SiteFileFetch extends Thread { c5O8,sT X`eX+9 8(S|=c R SiteInfoBean siteInfoBean = null; //文件信息Bean 4Sdj#w long[] nStartPos; //开始位置 $ >].;y?$ long[] nEndPos; //结束位置 <+b~E, FileSplitterFetch[] fileSplitterFetch; //子线程对象 JPj/+f long nFileLength; //文件长度 vQ$"|8, boolean bFirst = true; //是否第一次取文件 }20tdD ~ boolean bStop = false; //停止标志 f6Y-ss;' File tmpFile; //文件下载的临时信息 ["ocZ? x DataOutputStream output; //输出到文件的输出流 $,I@c"m{ ;4v`FC> //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) B/hQvA;( public SiteFileFetch(SiteInfoBean bean) throws IOException LHA:frC { b#t5Dve siteInfoBean = bean; Fy.!amXu //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 8/ukzY1! tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); As tuM] if(tmpFile.exists ()) )RWukr+ { Z*NTF:6c bFirst = false; mfDt_Iq read_nPos();
nI+.De~ } l%yQ{loTh else "uyr@u0b { 65RD68a nStartPos = new long[bean.getNSplitter()]; QNXS.!\P nEndPos = new long[bean.getNSplitter()]; ,&Zk63V } FZ8Qj8
dWhqu68_ 2G3Hi;q18 !l6ht{ } sULsU t# YNp-A.o
W@ 0B~x8f public void run() ##1/{9ywy { sY]pszjT //获得文件长度 ~1S,[5u|s //分割文件 p}X *HJq$ //实例FileSplitterFetch *Rc?rMF ! //启动FileSplitterFetch线程 rQTG-& , //等待子线程返回 !y2yS/ try{ eqWs(` if(bFirst) r& :v( { #Ny+6XM nFileLength = getFileSize(); ;9Wimf]G,E if(nFileLength == -1) |]Y6*uEX< { t0^)Q$ System.err.println("File Length is not known!"); sLK$H|%>m } p DU+(A4> else if(nFileLength == -2) `+UBl\j { -KqMSf&9 System.err.println("File is not access!"); ^j1G08W } 4#ifm# else <LX-},?P { :"Rx$;a for(int i=0;i<nStartPos.length;i++) W&&C[@Jd3 { KHeeB `V>J nStartPos = (long)(i*(nFileLength/nStartPos.length)); 91k-os(4] } JbXi|OS/ for(int i=0;i<nEndPos.length-1;i++) K>-01AGHL { /d$kz&aIV nEndPos = nStartPos[i+1]; A[:(#iR5-E } \GGyz{i nEndPos[nEndPos.length-1] = nFileLength; iU#"G" & } SkU9iW(k } b$`/f:_ DYgz;Y/%l r[2*K 9 //启动子线程 T?7++mcA fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; U.N&~S for(int i=0;i<nStartPos.length;i++) # `@jVX0 { !0v3Lu~j fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), $ao7pvU6 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), MK!Aq^Jz nStartPos,nEndPos,i); iD>H{1 h Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); <J.q[fd1* fileSplitterFetch.start(); =RofC9, } 0XA0b1V X // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 1_M}Dc+J siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); iY5V4Gbo // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Mh}vr%0;) nEndPos = " + nFileLength); nrbP3sf* // fileSplitterFetch[nPos.length-1].start(); o
ethO [|(=15; oZi{v]4 //等待子线程结束 Qp>Z&LvC5 //int count = 0; lLU8eHf\ //是否结束while循环 OLqynY boolean breakWhile = false; lZ)
qV!< KD--w(4 EWOa2^%}Z\ while(!bStop) nt%p@e!, { d\r-)VWSr" write_nPos(); x1}Ono3"T Utility.sleep(500); A!R'/m'VG breakWhile = true; kX+98?h-C p+b$jKWQ SEH[6W3 for(int i=0;i<nStartPos.length;i++) Sar1NkD# { Xx\,<8Xn if(!fileSplitterFetch.bDownOver) s3VD6xi7 { 8fPTxvXqL breakWhile = false; 2W#^^4^+ break; 4b6)+*[O } [ B*r{ } {$v^2K'C if(breakWhile) )RQQhB break; ]kF1~kXBe UKPr[ dEW= V"W //count++; kU.@HJ[@j //if(count>4) PX` xr1o // siteStop(); {uJ"% } z";(0% vJS}_j]_@ A8Km8" System.err.println("文件下载结束!"); XWq"_$&LF } ?TI]0) catch(Exception e){e.printStackTrace ();} {CNJlr@z } . i^@v<+ 9~jS_Y)" ^66OzT8A //获得文件长度 DfVJ~,x~ public long getFileSize() M }q;\} { a2/Mf
int nFileLength = -1; Z'Pe%}3 try{ 0G2Y_A&e** URL url = new URL(siteInfoBean.getSSiteURL()); J6"GHbsO HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); M0OIcMTv httpConnection.setRequestProperty("User-Agent","NetFox"); B+Ft
> q- 0q: 16 \)C/* int responseCode=httpConnection.getResponseCode(); *xY3F8 if(responseCode>=400) 1kR. .p<" { B]Ec processErrorCode(responseCode); M^>l>?#rl return -2; //-2 represent access is error t*H|*L#YR } WWo"De@ nHRk2l| 4^ U%` 1 String sHeader; ]lqZ9rO (hg6<` xtKU;+# for(int i=1;;i++) #kA?*i[T { }[h]z7e2S //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); lP*=4Jh //Utility.log(in.readLine()); .D\oKhV( sHeader=httpConnection.getHeaderFieldKey(i); B692Mn if(sHeader!=null) )jg*u}u
0 { ^:}C,lIrG if(sHeader.equals("Content-Length")) FK94CI { NffKK:HvBB nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); +
#E?) break; #y[omla8 } B& R?{y* } -Fu,oEj{* else xXa4t4gR break; _\Z'Yl } +v:]#1 } dNF_T?E\ catch(IOException e){e.printStackTrace ();} 8{ =ha catch(Exception e){e.printStackTrace ();} `h'=F(v(} +"bi]^\z 8oXp8CC Utility.log(nFileLength); (
^@i(XQ DHx&%]r;D b-#lKWso return nFileLength; 1
A0BM } Y4swMN8Bq )pT5"{ @TX@78fWz= //保存下载信息(文件指针位置) y'I
m/{9U private void write_nPos() 96QY0
{ hsS&|7Pt try{ tcsb]/my output = new DataOutputStream(new FileOutputStream(tmpFile)); @G=7A;-pv0 output.writeInt(nStartPos.length); G$&jP:2q for(int i=0;i<nStartPos.length;i++) }1~9i'o%Z { js"5{w& // output.writeLong(nPos); b=pk;'- output.writeLong(fileSplitterFetch.nStartPos); zwJ&K;"y( output.writeLong(fileSplitterFetch.nEndPos); >~Tn%u< } #\n*Qg4p output.close(); /IJy'@B } *AGf'+j*z catch(IOException e){e.printStackTrace ();} 92A9gY catch(Exception e){e.printStackTrace ();} LP|YW*i=IQ } t8h*SHD9 \4G9YK-N> II.:k.D` //读取保存的下载信息(文件指针位置) q oi21mCn private void read_nPos() t&q~ya/C { {z0iWY2Xw try{ aGi`(|shW DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ?Z?(ky! int nCount = input.readInt(); { AYW
C6Y nStartPos = new long[nCount]; -)')PV_+ nEndPos = new long[nCount]; xsJXf @ for(int i=0;i<nStartPos.length;i++) UdM2!f { R2-F@_ nStartPos = input.readLong(); {j]cL!Od nEndPos = input.readLong(); 5 m-/N?c } 4OgH+<G input.close(); ]YFjz/f } 4W*o:Y! catch(IOException e){e.printStackTrace ();} ,h'Q catch(Exception e){e.printStackTrace ();} :adz~L$ } WlvT&W l/zv > UWV%y P private void processErrorCode(int nErrorCode) ~//E'V- { |/n7(!7$[v System.err.println("Error Code : " + nErrorCode); \X%FM"r } YARL/V ov,s]g83 s_fe4K //停止文件下载 0LL0\ly] public void siteStop() ~B"HI+:\L { xp95KxHHo bStop = true; 5=
&2= for(int i=0;i<nStartPos.length;i++) 8_HBcZWs fileSplitterFetch.splitterStop(); i)X~L4gn GEf=A.WAfw X coPkW } _1G/qHf^S } (E00T`@t0i //负责部分文件的抓取 fv8x7l7 **FileSplitterFetch.java H(76sE */ aaY AS"/: package NetFox; c]#}#RJ`\ W&
0R/y7 -sJD:G,% import java.io.*; fTy:Re import java.net.*; B?8*-0a'[ Bx|W#:3e #n|5ng|CJ public class FileSplitterFetch extends Thread { ANw1P{9* [=jZP,b&), ky[Cx!81C String sURL; //File URL 0/f|ZH ~! long nStartPos; //File Snippet Start Position 2ak]&ll+h long nEndPos; //File Snippet End Position zMP6hn int nThreadID; //Thread's ID T=42]h boolean bDownOver = false; //Downing is over IL.bwtpQD boolean bStop = false; //Stop identical dyn)KDS FileAccessI fileAccessI = null; //File Access interface Y(7&3+'K `0]N#G
T Ep./->fOA public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException }9\6!GY0 { z3S"1L7 this.sURL = sURL; @Drl5C}+ this.nStartPos = nStart; |Ol29C$@| this.nEndPos = nEnd; ]aF; nThreadID = id; d"-I^|[OM fileAccessI = new FileAccessI(sName,nStartPos);//定位 8h=m()Eu } ]m 3cm Y2l;NSWU klQmo30i public void run() VZcW
3/Y { v4|TQ8!wR while(nStartPos < nEndPos && !bStop) [nV BnB { TX$dxHSPK w#A\(z%;x `x
_(EZ try{ y'^U4# ( URL url = new URL(sURL); |T"vF`Kr(> HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); c8mh#Tbl httpConnection.setRequestProperty("User-Agent","NetFox"); c$ib- String sProperty = "bytes="+nStartPos+"-"; GP4!t~"1 httpConnection.setRequestProperty("RANGE",sProperty); C=&n1/ Utility.log(sProperty); Ve"(}z 7$%G3Q|)L kI(3Pf]. InputStream input = httpConnection.getInputStream(); T<Xw[PEnP //logResponseHead(httpConnection); oCkG y(g]:# H:hM(m0?q byte[] b = new byte[1024]; l+2NA4s int nRead; V0>[bzI while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 64U|]gd$ { n;:.UGl9. nStartPos += fileAccessI.write(b,0,nRead); y{3+Un //if(nThreadID == 1) ldp9+7n~ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); p({@t=L3g } 1QA/ !2E WynTU? &S+*1<|`K Utility.log("Thread " + nThreadID + " is over!"); pm=O.)g4` bDownOver = true; XZ.D<T" //nPos = fileAccessI.write (b,0,nRead); "Ua-7Q&A } &D[M<7T catch(Exception e){e.printStackTrace ();} 25`W"x_ } GFPrK9T } u{=h%d/ ;0kAm
Vy B=]L%~xL$ //打印回应的头信息 Ih5Y7<8b~ public void logResponseHead(HttpURLConnection con) S[9b
I&C { b*S,8vE] for(int i=1;;i++) qk'&:A { ZMMx)}hS String header=con.getHeaderFieldKey(i); j}Svb1A if(header!=null) Xlug{ Uh //responseHeaders.put(header,httpConnection.getHeaderField(header)); PtUS7[] Utility.log(header+" : "+con.getHeaderField(header)); t1iz5%`p} else 1&e8vVN break; 8g{Mv#b% } q7aqbkwz} } "wV j8e=],sQ -tWxBGSa@ public void splitterStop() |b='DJz2 { rusM]Z bStop = true; "&D0Sd@[? } Z-CA9&4Uh *wqR .n? !X"nN9k } [?<v|k
g8Y)90 G 0hkYexX73 /* =HMCNl
**FileAccess.java 3VMaD@nYa *//文件访问(定位,写) 1=+S'_j package NetFox; D?Ol)aj? import java.io.*; 8TH;6-RT {s*1QBM$\Z Q rSO%Rm1* public class FileAccessI implements Serializable{ K(MZ!>{ h^IizrqU //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 2HE<WI^#h RandomAccessFile oSavedFile; [=.iJ5,{2 long nPos; FR50y+h^$ \N? lG q *hFJI9G public FileAccessI() throws IOException j";L{ { uW}M1kq?+l this("",0); fK@UlMC]7 } ^N ;TCn kp?_ir nyhHXVRH public FileAccessI(String sName,long nPos) throws IOException J~@W":v { FDGzh/ oSavedFile = new RandomAccessFile(sName,"rw"); u[wDOw this.nPos = nPos; xw~oR|`U oSavedFile.seek(nPos); -yIx:*KI } Frx_aGLH1 <Z1m9O "sy 5P);t9O6 public synchronized int write(byte[] b,int nStart,int nLen) b\NY!)B { ^'sy hI\ int n = -1; JGhK8E
try{ FhEfW7]0, oSavedFile.write(b,nStart,nLen); U;
#v-'Z n = nLen; [w FK!? } JsX}PVuL catch(IOException e) n;.); { HXB&
6 e.printStackTrace (); k1D|Cpnp } zP!j {y4w PMj!T \B| (3m^@2i return n; D|C!KF ( } 2-#&ktM%V Jjx1`S*i {|q(4(f"Iu } [GW;RjPE x)kp*^/ sdQ"[`~2R /* -0*z"a9<p8 **SiteInfoBean.java ^7`gf */ -zm-|6[Wi package NetFox; NF*Z<$ '% <q4<3A ?*f2P T?` public class SiteInfoBean { pc]( $)jf Kl :x?"g) private String sSiteURL; //Site's URL 7}fT7tsN private String sFilePath; //Saved File's Path g % 8@pjk private String sFileName; //Saved File's Name K@!Gs'Op private int nSplitter; //Count of Splited Downloading File @B>pPCowa lM%3 ?~?Q& t \,XG public SiteInfoBean() x?G"58 {//nSplitter的缺省值为5 f2M}N //default value of nSplitter is 5 Zx%6pZ(. this("","","",5); )#025>$z } ,D{D
QJ(B z7O$o/E-* -pm%F8{T] public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) G@6F<L~$1 { +nQp_a1{9% sSiteURL= sURL; ^[hx`Rh`t sFilePath = sPath; jtQ} sFileName = sName; $xq$ this.nSplitter = nSpiltter; +(8Z8]Jf t``q_!s}F }Gh95HwE } 5P![fX|5 1c*XmMB cFloaCz public String getSSiteURL() )s>R~7 { u:%Ln_S return sSiteURL; `:YCOF } DDp\*6y3l zIbrw9G vW`[CEm^X public void setSSiteURL(String value) $3^Cp_p6 { ~qezr\$2 sSiteURL = value; P?j ;&@$^e } Ew*SA &[y+WrGG -5#cfi4^* public String getSFilePath() UKp^TW1^ { }5lC8{wZ return sFilePath; I@:"Qee } b VcA#7
uA O#x=iZI ;><m[ l6 public void setSFilePath(String value) P$*9Z@ { M^ jEp sFilePath = value; cng166}1A } K aNO&%qX +PKd
</*]
KLgg([ public String getSFileName() p'\zL:3 { \"6?*L|] return sFileName; p;.M. } 1;eWnb( 2$FH+wuW `j!XWh*$ public void setSFileName(String value) w[OUGn' { e@7UL|12 sFileName = value; Tb}op XYK } Q AX3*%h 1C(sBU" x.Tulo0/ public int getNSplitter() 4|;Ys-Q { 61](a;Di return nSplitter; oqbhb1D1< } H`1q8}m H
h35cj _fS4a134R public void setNSplitter(int nCount) |!{ Y:f; { *auT_* nSplitter = nCount; wU|jw( } ch33+~Nn } z `jLKPP!= U7HfDDh OAf}\ /* %F\.1\&eE **Utility.java _{$<s[S */ T"1=/r$Ft package NetFox; pfHfw,[ AkCy
C1 }46Zfg\T6n public class Utility { nDyA][ 3^5h:OaT E;wT4 T= public Utility() i|m8#*Hd { HuR774f[ FC
WF$'cO F)4I70vG } 2MmHO2 '2
Y8 //线程睡眠 .5);W;`X public static void sleep(int nSecond) ~'F.tB { S|af?IW try{ T}/|nOu
5 Thread.sleep(nSecond); [5ncBY*A7 } f@[)*([ catch(Exception e) Y`d@4*FN$ { '#SZ|Rr6tX e.printStackTrace (); ,:2Z6~z{ } |?nYs>K } $@O? eK5~YM:o //日志 ug.|ag'R public static void log(String sMsg) ^VW]Qr! { Bh'!aip k System.err.println(sMsg); &xA>(|a\&- } vxOnv8( (E7"GJ J%n#uUs public static void log(int sMsg) l fFRqZ { @,7r<6E System.err.println(sMsg); Pm%5c\ef } P(DEf( } -%|
]
d ; ;Yv{)@'Bc x)Zb:" /* :,M+njcFc **TestMethod.java 'HJ+)[0X* */ v 2p package NetFox; p(nO~I2E IaQm)"Z ({@"{ public class TestMethod { 5D2mZ/ q*5L", 7VG*Wu public TestMethod() -agB ]j { ///xx/weblogic60b2_win.exe [VqiF~o, try{ Wp+lI1t SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); \ 4^zY' //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); b8Z_oN5! SiteFileFetch fileFetch = new SiteFileFetch(bean); S(nQ?;9, fileFetch.start(); .dVV#
H } g],]l'7H catch(Exception e){e.printStackTrace ();} $STGH cJbv,RV< v#d(Kj } ~JNE]mg MgJ5FRQ Ook\CK*nKe public static void main(String[] args) CM$&XJzva { ]f?r@U'AS| new TestMethod(); 7)[2Ud8 } uF1 4; } UJQTArf 点击下载更多相关资料
|