-
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
|
/* C9!t&<\} **SiteFileFetch.java L"qJZU */ 1f`De`zXzr package NetFox; :V(LBH0 import java.io.*; HIXAA?_eh= import java.net.*; JWixY/ ^#HaH 7k(}U_v public class SiteFileFetch extends Thread { !6KX^j- Y%XF64)6 *siX:?l SiteInfoBean siteInfoBean = null; //文件信息Bean ~U0%}Bbh long[] nStartPos; //开始位置 |O{N_-];. long[] nEndPos; //结束位置 &-3e3) FileSplitterFetch[] fileSplitterFetch; //子线程对象 K(EJ`2]:r long nFileLength; //文件长度 %MeAa?G-# boolean bFirst = true; //是否第一次取文件 #ibwD:{ boolean bStop = false; //停止标志 J~m$7T3Af File tmpFile; //文件下载的临时信息 "do5@$p| DataOutputStream output; //输出到文件的输出流 7q?ZieR 42NfD/"g+s //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) L ;L: public SiteFileFetch(SiteInfoBean bean) throws IOException c/|{yp$Ga> { *;fTiL siteInfoBean = bean; IT| h;NUG //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); L4>14D\ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); q)?%END if(tmpFile.exists ()) ?UtKu { A2|Bbqd bFirst = false; KD kGQh#9 read_nPos(); V<QpC5 } ~}.C*;J else &C9IR,& { AxH;psj nStartPos = new long[bean.getNSplitter()]; D+]mKPB nEndPos = new long[bean.getNSplitter()]; -9b=-K.y } 4uXGpsL h`&TDB2 kTL{Q0q 2(eO5.FYF } + -<8^y Y25`vE( qs]W2{-4~ public void run() xV>
.] { .I`>F/Sjr //获得文件长度 O*u
//分割文件 K*@?BE //实例FileSplitterFetch k79OMf<v //启动FileSplitterFetch线程 f(Xin3#' //等待子线程返回 $H<_P'h-B try{ Y=XDN: if(bFirst) sp\6-*F { /@`"&@W' nFileLength = getFileSize(); G8repY if(nFileLength == -1) 6s@!Yn|? { Fp.eucRxP System.err.println("File Length is not known!"); EXSH{P O+ } OX;bA^+}P else if(nFileLength == -2) !X}+JeU' { H:G``Vq;0m System.err.println("File is not access!"); AROHe } nAP*w6m0j else K_MEd1l { g2f"tu_/% for(int i=0;i<nStartPos.length;i++) {QEvc { +Z"Wa0wA nStartPos = (long)(i*(nFileLength/nStartPos.length)); dpW`e>o } upMs yLp( for(int i=0;i<nEndPos.length-1;i++) ]-wyZ +a { )u(,.O[cw nEndPos = nStartPos[i+1]; (Aw@}! } \; XJ$~> nEndPos[nEndPos.length-1] = nFileLength; k)+{Y v* } c44s@E } g0 Q,]\~ (6fD5XtS "smU5 s,P //启动子线程 xhALJfv fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; -o/Vp>_UOE for(int i=0;i<nStartPos.length;i++) LuRCkKJ { / :$WOQ fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), x1~AY/)v siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), IR"C? nStartPos,nEndPos,i); 7^>~k}H Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Ktk?(49 fileSplitterFetch.start(); gPn0-)< } +=W(c8~P // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), BiU>h.4=\( siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); _#~D{91
j: // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 3uw3[
SR1 nEndPos = " + nFileLength); kiF}+,z" // fileSplitterFetch[nPos.length-1].start(); +wj}x?ZeV (%6fZ U2`:' //等待子线程结束 b0}dy\dnQ //int count = 0; TTO8tT3[6} //是否结束while循环 -[*y{K@dh boolean breakWhile = false; 3_RdzW}f &tUX( 2?qT,pN while(!bStop) I*3>>VN { [#!Y7Ede write_nPos(); q>+!Ete1p Utility.sleep(500); NP3
e^ breakWhile = true; HMD\)vMK6 /{j._4c )W_akUL for(int i=0;i<nStartPos.length;i++) kh}h(z^ { otaRA if(!fileSplitterFetch.bDownOver) ?yG[VW { #)L}{mHLM- breakWhile = false; {*;K>%r\o break; fNda& } \hBzQ%0 } y.(< if(breakWhile) gDJ} <^ break; InL_JobE8r %4R1rUrgt| id,' + < //count++; C`ZU.|R //if(count>4) OGW3Pe0Z' // siteStop(); o]I8Ghk>/z } vMY!Z1.* CY=lN5!J I\Y N! System.err.println("文件下载结束!"); ,+d8
} \R9izuc9 catch(Exception e){e.printStackTrace ();} l_;6xkv4 } 97HI9R
ld"rL6
K#6@sas //获得文件长度 k{{
Y2B?C public long getFileSize() `
,SNq i { 3
[#Rm>,Vu int nFileLength = -1; P(-
try{ /j3",N+I URL url = new URL(siteInfoBean.getSSiteURL()); ZJ+ad,?, HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); J(8?6&=ck httpConnection.setRequestProperty("User-Agent","NetFox"); k&L/JzzI -G7)Y: KL!cPnAUu int responseCode=httpConnection.getResponseCode(); \HrtPm`e if(responseCode>=400) cBbumf 9C { Xhyn! &H5 processErrorCode(responseCode); amExZ/ return -2; //-2 represent access is error t>a D;|Y }
Oc,HnyV+ uF[*@N e ?7NW String sHeader; g9;s3qXiG sZ7,7E|_ XgXXBKf$ for(int i=1;;i++) Z0v?3v}9^ { ]1zud //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); #l`\'0`. //Utility.log(in.readLine()); 30SQ&j[N] sHeader=httpConnection.getHeaderFieldKey(i); ~K5A$s2 if(sHeader!=null) QrFKjmD< { Y^DGnx("m if(sHeader.equals("Content-Length")) #=0 BjW* { bLGC nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); O8>&J-+2 break; K;Hgq4 } - q(a~Ge } :.=j)ljTx else t_16icF9U break; F?jD5M08t/ } bJ9*z~z)e } Q`.q,T8I catch(IOException e){e.printStackTrace ();} r|]YS6 catch(Exception e){e.printStackTrace ();} liy/uZ .v}|Tp&k {jwLVKT$ Utility.log(nFileLength); x)N QRd VR1[-OE
z6;hFcO return nFileLength; oC}
u } q7_Ttjn-DV $B<:SuV# bZAL~z+ V //保存下载信息(文件指针位置) ?WqaT) l~ private void write_nPos() XHdhSFpm { ?*xH
HI/ try{ 01&E.A output = new DataOutputStream(new FileOutputStream(tmpFile)); |N)),/R_ output.writeInt(nStartPos.length); _Yp~Oj for(int i=0;i<nStartPos.length;i++) JKrS;J^97v { ~b
X~_\ // output.writeLong(nPos); .}Xf<G& output.writeLong(fileSplitterFetch.nStartPos); yH43Yo#Rk output.writeLong(fileSplitterFetch.nEndPos); @TXLg2 } Ac*J;fI output.close(); \/\w|j } %K=_ catch(IOException e){e.printStackTrace ();} .L;e:cvx catch(Exception e){e.printStackTrace ();} @OFxnF` } X6(s][Wn \G)F* u8%X~K\ //读取保存的下载信息(文件指针位置) S3WUccv private void read_nPos() Z^'\()3t { .oLV\'HAR try{ bi",DKU{l DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); HOCj* O4 int nCount = input.readInt(); $?k]KD nStartPos = new long[nCount]; QX<x2U nEndPos = new long[nCount]; [.Kp/,JY for(int i=0;i<nStartPos.length;i++) 1kvs2 { #,6T. O nStartPos = input.readLong(); u-:3C<&> nEndPos = input.readLong(); ; Ad5Jk } 5F
^VvzNn input.close(); Ks6\lpr } /Yg&:@L catch(IOException e){e.printStackTrace ();} S ++~w9} catch(Exception e){e.printStackTrace ();} 9^8OIv?m8 } <;~u@^> {i8zM6eC )$df6sq private void processErrorCode(int nErrorCode) W-&V:S{< { `JPkho System.err.println("Error Code : " + nErrorCode); f^u-Myk } GQCdB> Z(Y: d(ypFd9z //停止文件下载 T{f$S public void siteStop() Qe ip h { J,u-)9yBA< bStop = true; fG$LqzyqlK for(int i=0;i<nStartPos.length;i++) ~gMt
U fileSplitterFetch.splitterStop();
rJCb8x+5a gM=:80 !3mt<i]a" }
#C?M- } 6W=V8 //负责部分文件的抓取 2E!~RjxSY **FileSplitterFetch.java /}L2LMIm */ PcU~1m1 package NetFox; Q3&q%n|< v}V[sIs} 324XoMO import java.io.*; {)!>e import java.net.*; S5y.H GbL1<P$V +)e|> public class FileSplitterFetch extends Thread { $$&.}}., *`Vm ncv3 @v#P u_ String sURL; //File URL ^ W?cuJ8 long nStartPos; //File Snippet Start Position 3)\fZYu) long nEndPos; //File Snippet End Position X|eZpIA45 int nThreadID; //Thread's ID )S2yU<6oOt boolean bDownOver = false; //Downing is over s:"Sbml boolean bStop = false; //Stop identical xSK#ovH2 FileAccessI fileAccessI = null; //File Access interface W [K.|8ho Xw!\,"{s @&WHX# public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Jut&J]{h { u YT$$'S this.sURL = sURL;
G7al@ this.nStartPos = nStart; JDE_*xaUV this.nEndPos = nEnd; VLkAsM5}% nThreadID = id; [{BY$"b#: fileAccessI = new FileAccessI(sName,nStartPos);//定位 bD:0k.` } g]2L[4 Q^rR }Ws M%!;5 public void run() W_Y8)KxG:L { p T 8?z while(nStartPos < nEndPos && !bStop) !#O[RS { uy3<2L#. yivu|q |9c~kTjK try{ VoZ{ I{>| URL url = new URL(sURL); $P0q! HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); t n5 httpConnection.setRequestProperty("User-Agent","NetFox"); Wa<<"x$ String sProperty = "bytes="+nStartPos+"-"; !ou#g5Q@z httpConnection.setRequestProperty("RANGE",sProperty); r%ES#\L6+| Utility.log(sProperty); CG=c@-"n/ K\F0nToJ. 6-
i.*!I 8 InputStream input = httpConnection.getInputStream(); _f^KP@^j //logResponseHead(httpConnection); r8Pd}ptPU JL= c IH8 chE!,gik byte[] b = new byte[1024]; hb5K"9Y int nRead; ;J 5z while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) x^f)I|t { p1Zb&:+ nStartPos += fileAccessI.write(b,0,nRead); GYaP"3Lu //if(nThreadID == 1) V;XKvH // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); nG!<wlY14P } 2Kz+COP+ xZ9:9/Vg n_e'n|T Utility.log("Thread " + nThreadID + " is over!"); ?W'p&(; bDownOver = true; 3N+lWuE}K //nPos = fileAccessI.write (b,0,nRead); 7R2O[=Szq } ,94<j," catch(Exception e){e.printStackTrace ();} zzQWHg]/ } Lqj
Qv$ } M`Er&nQs G:1'}RC : Z nc(Q //打印回应的头信息 @dDeOnF public void logResponseHead(HttpURLConnection con) MePD:;mm^ { kW g.-$pp for(int i=1;;i++) WKEb
'^ { w6%
Q"%rp String header=con.getHeaderFieldKey(i); m.e]tTe if(header!=null) \WCQ>c?~ //responseHeaders.put(header,httpConnection.getHeaderField(header)); v~P,OP("c Utility.log(header+" : "+con.getHeaderField(header)); o|(5Sr&H else Dsg>~J' break; 3yZmW$E. } d,"LZ>hNY* } F1t( P 8 z*eBjHbF smQ^(S^ public void splitterStop() f&^(f1WO { iEr,ly bStop = true; k&]nF,f } )u)=@@k21 _/s"VYFZ hArY$T&MB } o%$.8)B9F BX@Iq Tu#< {'1$ /* g7*)|FOb **FileAccess.java yw3"jdcl *//文件访问(定位,写) Eah6"j!B8n package NetFox; OU[<\d import java.io.*; *U?O4E9 NB"S,\M0 V2YK T,5 public class FileAccessI implements Serializable{ o\IMYT UNdD2Fd9 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 %@/^UE: RandomAccessFile oSavedFile; 0lfK}
a long nPos; :d36oiHKu ggr ~C.*Vc?| public FileAccessI() throws IOException }]?Si6_ZZ { AlSO this("",0); VM"cpC_8 } tli.g bLgH3[{ ^QB[;g.O public FileAccessI(String sName,long nPos) throws IOException D6sw"V# { k*.]*]
oSavedFile = new RandomAccessFile(sName,"rw"); hRcb}>pr this.nPos = nPos; c?p^!zG oSavedFile.seek(nPos); g,ZA\R~ } yBIlwN`kB xvr5$x|h 2ej7Ql_@c public synchronized int write(byte[] b,int nStart,int nLen) <qCa9@Ea { <AHpk5Sn{ int n = -1; uy'ghF try{ pm&THd oSavedFile.write(b,nStart,nLen); lo1Ui`V n = nLen; gg;r;3u } E h%61/ catch(IOException e) 5jdZC(q5a { ^[L(kHOGzk e.printStackTrace (); J~Xv R } ] $ew 5% [uq>b|`RG 29R-Up!SVN return n; )*|/5wW1 } QFyL2Xes/ 8!g
`bC#% I$Nh|eM } bQAznd0 i%glQT &c`-/8c
/* dj|5'<l2 **SiteInfoBean.java
^?69|, */ BG{f)2F\ package NetFox; 'm%{Rz>j R;& >PFmq 8#I>`z^F public class SiteInfoBean { T:|/ux3 A]1Nm3@ W+nu=iQ! private String sSiteURL; //Site's URL J3Mb]X)_} private String sFilePath; //Saved File's Path /Y Kd [RQ private String sFileName; //Saved File's Name d1/emwH private int nSplitter; //Count of Splited Downloading File D)_
C@*q Rd?}<L >%JPgr/
8 public SiteInfoBean() Otn,UoeeB {//nSplitter的缺省值为5 ?I.9?cQXZ //default value of nSplitter is 5 4DXbeQs: this("","","",5); CU$khz" } WKf<%
E$ )fH
Q7 -!\3;/ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) \?:L>-&h8 { h\m35'v! sSiteURL= sURL; b^Hrzn sFilePath = sPath;
idmU.` sFileName = sName; QbU5FPiN this.nSplitter = nSpiltter; B(
[x8A] &}ZmT>q`$ ^}3^|jF } BT_]=\zi e4X
df>B yr]ja-Y public String getSSiteURL() O--p)\ { wak 26W>I3 return sSiteURL; x_PO; } q:{#kv8 St=nf\P&F ;%|im? public void setSSiteURL(String value) ;D5>iek5 { }E`Y.=
S sSiteURL = value; 3f|}p{3 } b`0tfXzS5 L
aTcBcI tobE3Od4 public String getSFilePath() pA7-B>Y { AXfU$~ return sFilePath; :,BAw , } 2:+8]b 3i N'^>pSc4W| 5Z=4%P*I public void setSFilePath(String value) Z:b?^u4. { 570Xk\R@M sFilePath = value; {%jAp11y+O } 9rB3h`AVF I?KN7(9u? ~W'DEpq_ public String getSFileName() P\7DA4] { 5f0M{J,KC return sFileName; <H[w0Z$ } jzvK;*N $Dg-;I l![M,8 public void setSFileName(String value) ~NGM6+9 { yCX5
5: sFileName = value; AbU`wr/h 4 } "tCI_
Zi; #-az]s|N p^l#Wq5 public int getNSplitter() QE<Z@/V*a { whI{?NP return nSplitter; .j6udiv5 } 2j\_svw' [V}vd@*k :4AQhn^;" public void setNSplitter(int nCount) ^0,}y]5p { aRd~T6I nSplitter = nCount; 6]4~]! } +cpb!YEAb } 1nVQYqT_ 2g(_Kdj*{ qLR;:$]Q&8 /* +in)(a. **Utility.java ?pL|eS7 */ +Z#=z,.^ package NetFox; K5>3 eAHY/Y! 5!0iK9O public class Utility { /08FV|tX) 2:LUB)&i >}k*!J| public Utility() !&)X5oJ { " <bjS KdNo'*;U]_ -:}vf? } VPCI5mS_ 2"0VXtv6 //线程睡眠 gI:g/ R public static void sleep(int nSecond) !G%!zNA S { bGh&@&dHr try{ 'r'=%u$1C Thread.sleep(nSecond); &oL"AJU } xvGYd,dlK catch(Exception e) s/1r{;q { 88Pt"[{1 e.printStackTrace (); UMcM&yu- } bR`5g } + V=<vT Aez2n(yac //日志 %Z;RY5 public static void log(String sMsg) EeaJUK]z9 { QPy h.9:N System.err.println(sMsg); nC:T0OJv } ^Ks1[xc* ` @`.4"*@M Rsx6vF8]5 public static void log(int sMsg)
&_)P)L { UG vIH m System.err.println(sMsg); R ENCk( } [gzaOP`f } bbL\ xq^ s'O%@/;J @= <{_p /* l,n_G/\ **TestMethod.java Vmz#u1gGT6 */ y)r`<B package NetFox; o*T?f)_[p .M6. ]H GTs,?t16/ public class TestMethod { I!zoo[/)% x1=`Z@^ U<6)CW1; public TestMethod() GzEw~JAs { ///xx/weblogic60b2_win.exe l6zAMyau5 try{ R;"$ PHD SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); {[uhIJD3g6 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); ;&lXgC^* SiteFileFetch fileFetch = new SiteFileFetch(bean); eKP>}` fileFetch.start(); 1^IMoC7$# } c coi catch(Exception e){e.printStackTrace ();} ~HY)$Yp; e_-g|ukC ]W3u~T* } l@4pZkdq &UDbH* !4= G-CL \G\n public static void main(String[] args) D(z#)oDr { U& GPede new TestMethod(); mmQC9nZ } tFcQ.1 } Q_T,=y 点击下载更多相关资料
|