-
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
|
/* 68V66:0 **SiteFileFetch.java 1Cki}$k@ */ (NyS2` package NetFox; E)H:
L- import java.io.*; )TnxsFC import java.net.*; \`;FL\1+W eLJW k {_X%H/ public class SiteFileFetch extends Thread { ),v[.9!}: m]R< :_ /zMiy? SiteInfoBean siteInfoBean = null; //文件信息Bean (s4w0z long[] nStartPos; //开始位置 q]T{g*lT long[] nEndPos; //结束位置 Bf~ FileSplitterFetch[] fileSplitterFetch; //子线程对象 U2\g
Kg[-Q long nFileLength; //文件长度 f;!1=/5u- boolean bFirst = true; //是否第一次取文件 ;|
##~Y.9 boolean bStop = false; //停止标志 @Iia>G@Rz File tmpFile; //文件下载的临时信息 oFB~)}f<v DataOutputStream output; //输出到文件的输出流 Ac0C,*|^ 1Y6<i8 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) @G+Hrd6 public SiteFileFetch(SiteInfoBean bean) throws IOException UX}ZE.cV { !*HH5qh6 siteInfoBean = bean; <k-&Lh:o3 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); >p [|U`>{ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); xQ\/6| if(tmpFile.exists ()) Y!c
RzQ { I:CnOpR>A bFirst = false; ?
acm5dN read_nPos(); .Qm"iOyM } [g`9C!P-G else ~B;kFdcVXn { ()e.J nStartPos = new long[bean.getNSplitter()]; |Wd]:ijJ nEndPos = new long[bean.getNSplitter()]; wvBx]$SC } ,l^; ZE 8,=N~(pd` #_0OYL`(mE .lAqD- } ~XQj0' z )s{>^D n[8ju,= public void run() 3>YG { LsH&`G^< //获得文件长度 'Vq
<;.A //分割文件 #Jp_y| //实例FileSplitterFetch 1"?3l`i //启动FileSplitterFetch线程 FDBj<uXfM| //等待子线程返回 t0h@i` try{ :tU&d(8 if(bFirst) L;N)l2m.\ { gEcRJ1Q;C nFileLength = getFileSize(); 0NrUB if(nFileLength == -1) x>:~=#Vi { kx&Xk0F_g System.err.println("File Length is not known!"); uJ<nW%} } Z BjyQ4h else if(nFileLength == -2) bC*( ,n<' { ~R^~?Y%+< System.err.println("File is not access!"); dz@L}b* } g$bbm}6S else )7!q>^S{B { =j#1HI=Fe for(int i=0;i<nStartPos.length;i++) 9RA~#S|(T { qd$Y"~Mco nStartPos = (long)(i*(nFileLength/nStartPos.length)); r+%:rFeX } 4UwXrEQp for(int i=0;i<nEndPos.length-1;i++) !SRElb A;i { $>Md]/I8 nEndPos = nStartPos[i+1]; A+Uil\% } &j=FxF9o nEndPos[nEndPos.length-1] = nFileLength; lh^-L+G:Ok } RhwqAok|lj } );EW(7KeL
`w/:o$& 'YQ^K`lV //启动子线程 ]^aOYtKX fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 12l-NWXf for(int i=0;i<nStartPos.length;i++) rXl ~D! { $Ro]]NUz| fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), D<=x<. siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), =AEl:SY+ nStartPos,nEndPos,i); iA*^`NMaT Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 9vIqGz-o fileSplitterFetch.start(); 0zJT_H+ } NQBa+N // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), t~_j+k0K# siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); abog\0 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ~)J]`el,Q nEndPos = " + nFileLength); K>%}m, // fileSplitterFetch[nPos.length-1].start(); >i&"{GZ {WokH;a/ =[A5qwyv //等待子线程结束 ] oOSL=~c //int count = 0; RbOEXH*] //是否结束while循环 9Yu63s ia boolean breakWhile = false; <jt_<p
+ p2m@0ou qDSZ:36 while(!bStop) hY*ylzr83 { %E<.\\^% write_nPos(); o )\\(^ld Utility.sleep(500); +\Hh|Uz5 breakWhile = true; 0`WjM2So ]|H`?L $] ])FM"b for(int i=0;i<nStartPos.length;i++) RN,5>.w { V(gmC%6%l* if(!fileSplitterFetch.bDownOver) seQSDCsvw* { C0f<xhp?j breakWhile = false; "+0Yhr ? break; 4*`AYx( } dM-qd` }
L3N?^^] if(breakWhile) 0f_+h %%= break; TTYM!+T k<&zVV' c[IT?6J4 //count++; VtTTvP3 //if(count>4) s0zN#'o] // siteStop(); b(E}W2-t } RJp Rsr
DPWt=IFU hSN{jl{L` System.err.println("文件下载结束!"); kVmRv.zZ } v3*y43 catch(Exception e){e.printStackTrace ();} xmM!SY> } bHKTCPf 4 ZUTF3 3BZa}Q_ //获得文件长度 S|jE1v"L public long getFileSize()
x>]14bLz { $q|-9B int nFileLength = -1; xS'Kr.S
try{ ro n-v"! URL url = new URL(siteInfoBean.getSSiteURL()); n%S%a>IQj HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); p{vGc-zP. httpConnection.setRequestProperty("User-Agent","NetFox"); =,Zkg(M )K}-z+$)k 69"4/n7B? int responseCode=httpConnection.getResponseCode(); 4@mK:v% if(responseCode>=400) mEZHrr J { V+$^4Ht processErrorCode(responseCode); C>:,\=y% return -2; //-2 represent access is error 94}y,\S~ } |Wg!>g! 6 uTFgSqZ `x:O&2 String sHeader; KXiStwS rJM/.;Ag KU=+ 1,Jf for(int i=1;;i++) *UZd!a) { ?u4t; //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); V<i_YLYmJe //Utility.log(in.readLine()); r
[E4/?_ sHeader=httpConnection.getHeaderFieldKey(i); 2PC:F9dh\ if(sHeader!=null) M#.dF{%% { XE$;Z'Qhjm if(sHeader.equals("Content-Length")) tPb<*{eG { &U_T1-UR2 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); _&RGhA break; 7P:/ (P } .^wBv
'Y } T`2a) else U.Fs9F4M # break; E^B3MyS^^ } e8 c.&j3m } wWVB'MRXB, catch(IOException e){e.printStackTrace ();} Dn48?A[v catch(Exception e){e.printStackTrace ();} @GWlo\rM6^ 5Y>fVq{U?; tP89gN^PA| Utility.log(nFileLength); |*g\-2j{ Jow{7@FG c27Zh=;Tj return nFileLength; r2\}_pIj } +bk+0k9k5 3$3%W<&^ kbSl.V%) //保存下载信息(文件指针位置) *rVI[kL private void write_nPos() 63'L58O { 5R6QZVc try{ 7#j9"* output = new DataOutputStream(new FileOutputStream(tmpFile)); ,U~in)\
U output.writeInt(nStartPos.length); %edTW[C` for(int i=0;i<nStartPos.length;i++) L>pSE'} { ~i0>[S3' // output.writeLong(nPos); xLP8*lvy output.writeLong(fileSplitterFetch.nStartPos); 24*3m&fA*K output.writeLong(fileSplitterFetch.nEndPos); l-2lb&n } b?/Su<q output.close(); \[
W`hhJ } 1
J[z ![Tf catch(IOException e){e.printStackTrace ();} @9lGU# catch(Exception e){e.printStackTrace ();} *,
R ~[g } ]YY4{E(9d r-Oz k$ w+{{4<+cd //读取保存的下载信息(文件指针位置) 9hgIQl private void read_nPos() 1[-RIN;U8 { rIX 40,` try{ !Pu7%nV. DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); \==Mgy2J8 int nCount = input.readInt(); r;O?`~2'4 nStartPos = new long[nCount]; M"foP@ nEndPos = new long[nCount]; Mo]iVj8~ for(int i=0;i<nStartPos.length;i++) }Qh%Z) { knzQ)iv&& nStartPos = input.readLong(); ]''tuo2g8 nEndPos = input.readLong(); bd3>IWihp } #fFD|q input.close(); qnzNJ_ `R } X^C $|: catch(IOException e){e.printStackTrace ();} ]j.!
catch(Exception e){e.printStackTrace ();} w$`u_P|@E: } I.o3Old &-x/c\jz D"K!ELGW private void processErrorCode(int nErrorCode) u@aM8Na { :(I=z6 System.err.println("Error Code : " + nErrorCode); NM1TFs2Y* } :~p_(rE 6wb M$|yFj nTsPX Tat //停止文件下载 3]>YBbXvE public void siteStop() }'\M}YM { E8o9ufj3 bStop = true; Y3xEFqMU for(int i=0;i<nStartPos.length;i++) 8g/r8u~ fileSplitterFetch.splitterStop(); R!WeSgKCs cSj(u%9} SNV;s, } mN#&NA }
K4^B ~0~ //负责部分文件的抓取 ?hW(5]p| **FileSplitterFetch.java '=IuwCB|; */ G+iJS!= package NetFox; ltd'"J/r iz-O~T/^ )Y?E$=M+B import java.io.*; ;8gODj:dO import java.net.*; b{W ,wn 7.C]ZcU ^Cg@'R9 public class FileSplitterFetch extends Thread { NmN:x&/ 6uFGq)4p@ ND5E`Va5R String sURL; //File URL JM*rPzp long nStartPos; //File Snippet Start Position lqKwjJtX long nEndPos; //File Snippet End Position t;[Q&Jl int nThreadID; //Thread's ID .|K\1qGW0 boolean bDownOver = false; //Downing is over uMBb=
boolean bStop = false; //Stop identical *1}vn%wvn FileAccessI fileAccessI = null; //File Access interface _"'-fl98* H/ub=,Ej* (7v`5|'0 public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ;"%luQA<w { J1Y3>40 this.sURL = sURL; NO#^_N`#\ this.nStartPos = nStart; r3.v ^ this.nEndPos = nEnd; ? oGmGKq nThreadID = id; EtB56FU\ fileAccessI = new FileAccessI(sName,nStartPos);//定位 fVBRP[, } I3?:KVa l1RFn,Tzr {K2F(kz?T public void run() " 2@Ys*e { n]btazM{ while(nStartPos < nEndPos && !bStop) Q1'D*F4 { <lLk(fC 14\!FCe)! o-t!z'\lO try{ yDw^xGws URL url = new URL(sURL); D%.<}vG HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 1'* {VmM httpConnection.setRequestProperty("User-Agent","NetFox"); Xgm9>/y String sProperty = "bytes="+nStartPos+"-"; Mq,_DQ httpConnection.setRequestProperty("RANGE",sProperty); vGPaW YV Utility.log(sProperty); )5bdWJ>l ,#-^ ZZ6F0FLXJ InputStream input = httpConnection.getInputStream(); 9$'Edi=6 //logResponseHead(httpConnection); =j~}];I iAWoKW sfNAGez byte[] b = new byte[1024]; m;I;{+"u int nRead; |&%l @X6 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) %u|qAF2uS { ~LzTqMHM nStartPos += fileAccessI.write(b,0,nRead); >:P3j<xTv //if(nThreadID == 1) r,dxW5v. // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ^A$~8?f } ^SRa!8z$W 1vxh3KS. E0S[TEDa] Utility.log("Thread " + nThreadID + " is over!"); sw &sF bDownOver = true; R:JS)>B //nPos = fileAccessI.write (b,0,nRead); #$%gs] } 9/|i.2& catch(Exception e){e.printStackTrace ();} J XnPKAN } c5rQkDW } IA;KEGJ mwTn}h3N >Y< y]vM: //打印回应的头信息 G8?<(.pi@ public void logResponseHead(HttpURLConnection con) K+mtuB]yr { Qi7^z; for(int i=1;;i++) J0|}u1?l { wGQ{ String header=con.getHeaderFieldKey(i); Dl/_jM if(header!=null) XT_BiZ%l5O //responseHeaders.put(header,httpConnection.getHeaderField(header)); ?8C+wW Utility.log(header+" : "+con.getHeaderField(header)); M !OI :v else vR~*r6hX8 break; 49Ue2=PP# } @kwD$%*0 } #(*WxVE 6YU2
!x C5RDP~au public void splitterStop() uf)W?`e~ { L ou4M bStop = true; .^.UJo;4G } 90aPIs- ^! ZjK-$A< %dT%r=%Y } {Q(6
.0R P [nWmY |2 wff? /* xD?{Hw>QT# **FileAccess.java /9w}[y*E *//文件访问(定位,写) |H_)u package NetFox; PewPl0 import java.io.*; X7c*T / Yhw* `"X u\.sS|$ public class FileAccessI implements Serializable{ G[>-@9_b /l$noaskX //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 usTCn3u RandomAccessFile oSavedFile; };!c]/, long nPos; B=c^ma .RWBn~b#I tl^[MLQa public FileAccessI() throws IOException &s < { [sk"2 this("",0); _gGy(` } Rt:PW}rFf GKd>AP_ 6~/H#8Kdn public FileAccessI(String sName,long nPos) throws IOException P*T)/A%4 { sk3;;<H oSavedFile = new RandomAccessFile(sName,"rw"); Hf-F-~E this.nPos = nPos; %ej"ZeM oSavedFile.seek(nPos); zn~m;0Xi } v1lj /A P%lLKSA T?ZMmUE public synchronized int write(byte[] b,int nStart,int nLen) 6e*b;{d { /(0d{ int n = -1; E37@BfpO3 try{ &L?Dogo oSavedFile.write(b,nStart,nLen); 5~X%*_[], n = nLen; d#tUG~jc } I^|bQ3sor catch(IOException e) 09?<K)_G { ?hu 9c e.printStackTrace (); O&s6blD11 } X>6a@$Mx P _#F'rl6' uR%H"f return n; <FK><aA_i* } W%W.
+f #?=cg]v_ ^>p [b } ]x G4T>S YBO53S]= ]O\W<'+V /* 4dK@UN\ **SiteInfoBean.java ({9!P30: */ ?f`-&c; package NetFox; F1=+<]! v8IL[g6" Z9D4;1 public class SiteInfoBean { 5xHiq&d.E 8#Z5-",iw HKkf+)%)x private String sSiteURL; //Site's URL VfwD{+5 private String sFilePath; //Saved File's Path V"ZbKV+[ private String sFileName; //Saved File's Name Uk2q,2 private int nSplitter; //Count of Splited Downloading File bsry([N>w XL3h ;$, z&0V21"l public SiteInfoBean() f.$o|R=v {//nSplitter的缺省值为5 z)~!G~J] //default value of nSplitter is 5 +;Gl>$ this("","","",5); ~e+w@ lK } Q=8
cBRe zOOX>3^ iFA"m;$ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) *La =7y: { M::iU_ sSiteURL= sURL; #0D.37R+k sFilePath = sPath; jQ)>XOok sFileName = sName; 5!zvoX9 this.nSplitter = nSpiltter; \G@6jn1G( SA1/U "/?qT;<$) } 0d ->$gb sriz
b JY+[ public String getSSiteURL() ? ^CGJ1 { 72zuI4& return sSiteURL; A%1=6 } MGzF+ln^U !y`e,(E C#&6p0U public void setSSiteURL(String value) u&x K>7 { ([-=NT}Aq sSiteURL = value; o
z{j2% } syf"{bBe 61/zrMPn 8!GLw-kb public String getSFilePath() H|U/tU- { ..!-)q'? return sFilePath; :(`>bY } Ne7{{1 -<!17jy S\5k'ifh public void setSFilePath(String value) b
H_pNx81 { :5{@* sFilePath = value; A'1AU:d } R?~h7 d E$Pjp oQTf AsLjU#jn public String getSFileName() M%s$F@ { ~vV)| return sFileName; [?@wCY4= } B kxhF Bq]O &>\hX ('q vYQ public void setSFileName(String value) az;jMnPpR5 { X,+}syK sFileName = value; 6QXQ<ah" } 6.s? wrYQ=u#Z rDX'oP: public int getNSplitter() {IHK<aW { o`mIi return nSplitter; hO.G'q$V } qd~98FS YG~ o UX`DZb+^ public void setNSplitter(int nCount) #6sC&w3 { *P R_Y=v% nSplitter = nCount; gQ=POJ=G } S<!_
u q } |zq!CLjD@ G+ v, Hi1 Rgfhs[Z /* |;9 A{#zM **Utility.java !u{"] T: */ Z/kaRnG[@t package NetFox; p_qm}zp
:LiDJF Z3So|M{v public class Utility { Jrd4a~XP Vt=(2d5:p (F[/~~ public Utility() O+p-1 C$\ { tNuC xb- j'Y"/< j8Q5d` } E<CxKY9 mzE$aFu8 //线程睡眠 Mq:'-` public static void sleep(int nSecond) pl x/}ah8 { ~8xh0TSi try{ )d(0Y<e@ Thread.sleep(nSecond); XyM(@6,' } d&T6p&V$ catch(Exception e) L;M^>{> { s"',370 e.printStackTrace (); `}~)1'(#/ }
Q
A)9 } {jM<t *e3L4 7"G //日志 g"]<J& public static void log(String sMsg) n!ZP?]FR { uOl(-Zq@ System.err.println(sMsg); #W@% K9 } x , Vh 4Wla&yy 1Y"35)CR) public static void log(int sMsg) =Esbeb7P { nl'J.dJe System.err.println(sMsg); yMbcFDlBr } }WO9!E( } EARfbb"SG7 JC&6q>$ )y`TymM[F /* 1rv$?=Z **TestMethod.java ,.oa,sku */ r'd:SaU+ package NetFox; <,@H;|mZ &*aer5?` y
Tw',N{ public class TestMethod { w.D4dv_H 1]>$5 1Q eyf4M;goz} public TestMethod() /~Zc}o,J { ///xx/weblogic60b2_win.exe ~)wwX:;B_ try{ 'je8k7`VA SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); Kunle~Ro //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); D(qHf9 SiteFileFetch fileFetch = new SiteFileFetch(bean); P(pd0,%i;a fileFetch.start(); ]HyHz9QkL } G}P)vfcH catch(Exception e){e.printStackTrace ();} MOP]\ypn $v:gBlj%" np-T&Pz2 } VR4E
2^ :'d76pM- emv ;m/&8 public static void main(String[] args) (|<h^]
y3 { Bw3F7W~l new TestMethod(); p;qRm}
0} } gHi~nEH } m3xz=9Ve 点击下载更多相关资料
|