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/* uZo`IK J **SiteFileFetch.java Wj4^W<IO */ -eR!qy:.]5 package NetFox; i.&Kpw9;m import java.io.*; jom}_ import java.net.*;
<84C tv [+%d3+27 {1Ju}=69 public class SiteFileFetch extends Thread { 1 ;\]D9i ']ITuP8 KUp SiteInfoBean siteInfoBean = null; //文件信息Bean T/GgF&i3 long[] nStartPos; //开始位置 \)^,PA3 long[] nEndPos; //结束位置 0q[p{_t` FileSplitterFetch[] fileSplitterFetch; //子线程对象 N)y^</Ya long nFileLength; //文件长度 ~m?74^ i boolean bFirst = true; //是否第一次取文件 b(#"w[| boolean bStop = false; //停止标志 YN%=Oq File tmpFile; //文件下载的临时信息 j<ABO")v DataOutputStream output; //输出到文件的输出流 I&pr_~. >'} Y1_S5 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) [y|^P\D public SiteFileFetch(SiteInfoBean bean) throws IOException T_@[k { ;wJ7oj< siteInfoBean = bean; mUrS&&fu8 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ?w]"~ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); FJsK5- if(tmpFile.exists ()) ?kL|>1TY { 1V|< A bFirst = false; ( zn_8s read_nPos(); 5q5 )uv" } Q7~'![(a else @<D'-mMt { tt6.
jo nStartPos = new long[bean.getNSplitter()]; UAsF0&] nEndPos = new long[bean.getNSplitter()]; MAE7A"la } {D_++^ xSpMyXrQ g08*}0-k qri}=du&F } eJU;*] xfH .'t (-eT, 2BoFyL* public void run() gYTyH. { 2{A;du%& //获得文件长度 ,|T*|2Gm //分割文件 M82.khm~jM //实例FileSplitterFetch 8hTR*e!+ //启动FileSplitterFetch线程 L6|Hgrj -u //等待子线程返回 =
n+q_.A try{ %`xV'2H if(bFirst) K&=1Ap { 6gj]y^} nFileLength = getFileSize(); |av*!i5Q if(nFileLength == -1) oLgg { Km6Ub?/7o System.err.println("File Length is not known!"); K0tV'Ml#" } i\t753<Ys else if(nFileLength == -2) ![*:.CW { 8weSrm System.err.println("File is not access!"); 0JmFQ^g( } R%>jJ[4\[ else
b8rp8'M) { 8[8|*8xqs for(int i=0;i<nStartPos.length;i++) oN *SRaAp { kQ@gO[hS nStartPos = (long)(i*(nFileLength/nStartPos.length)); UZzNVIXA% } ]i-P-9PA4 for(int i=0;i<nEndPos.length-1;i++)
^I]LoG: { 'e}uvbK nEndPos = nStartPos[i+1]; =yl4zQmg$ } v1LKU nEndPos[nEndPos.length-1] = nFileLength; `wNm%*g } ).pO2lLF4 } /8f>':zUb an3~'g? h/,R{A2mO //启动子线程 u@<Pu@?xm fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; :lUX5j3 for(int i=0;i<nStartPos.length;i++) nN>J*02( {
%b=Y
<v fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), `_|aeoK_ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), L
;6b+I nStartPos,nEndPos,i); h S4.3]ei Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); dZPW2yf fileSplitterFetch.start(); x>}B# } )VNM/o%Q // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), lc]V\'e siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); z)}3**3'y // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", j7K5SS_] nEndPos = " + nFileLength); \ jECSV| // fileSplitterFetch[nPos.length-1].start(); ToV6lS" BbFa=H. Hal7
MP //等待子线程结束 }K2
/&kZ //int count = 0; !_qskDc- //是否结束while循环 w#oGX boolean breakWhile = false; :*^:T_U .:rmA8U[ b3}Q#Y\G while(!bStop) k!T|)\nc+ { q(,cYu write_nPos(); 9X( Sk% Utility.sleep(500); vB^uxdt|m breakWhile = true; ]fj- `== ^V[/(Lq =4eUAeH {w for(int i=0;i<nStartPos.length;i++) :4|M
jn { +#4]o
}6G if(!fileSplitterFetch.bDownOver) 4CLsY n? { g+/0DO_F3 breakWhile = false; @<2d8ed break; D}-o+6TI? } %;7.9% } z5'ZN+ if(breakWhile) k}GjD2m break; Y,C=@t@_ Q
$]YD
pCM y,Jh@n';| //count++; {3LA%xO //if(count>4) _pW_G1U // siteStop(); Av o|v> } E!zX)|Z< yMb|I~k e&0K;yU System.err.println("文件下载结束!"); $xT1 1 ^ } D|l,08n"? catch(Exception e){e.printStackTrace ();} r4u z} jl{ } X1oGp+& n#4Gv|{XMD I.1D*!tz //获得文件长度 Y6A;AmM8 public long getFileSize() t0q_>T-kt { +c--&tBo int nFileLength = -1; iwU[6A try{ =Q-k'= 6\ URL url = new URL(siteInfoBean.getSSiteURL()); );Z]SGd HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 2:Q(Gl`<l httpConnection.setRequestProperty("User-Agent","NetFox"); ;\qXbL7 P>(P2~$Y" *:g_'K"+ int responseCode=httpConnection.getResponseCode(); gyev5txn if(responseCode>=400) Z,
T#, { rFey4zzz processErrorCode(responseCode); pLnB)z? return -2; //-2 represent access is error h./P\eDc } yoQ\lk 4 /'N|c. XV>@B $hu String sHeader; 'Dath>Y= }$&xTW_ 6V1:qp/6 for(int i=1;;i++) G(/DtY] { %?9Ok //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); z\T Lsx //Utility.log(in.readLine()); ^z~~VBv sHeader=httpConnection.getHeaderFieldKey(i); /ylc*3e'4 if(sHeader!=null) 9[VxskEh { /1d<P! H if(sHeader.equals("Content-Length")) "UG
K8x { gzf-)J nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); e"k/d< break; OX\$ nQ\o } W\8Ln> } Z(e^ iH else $'{=R 45Z break; jnJZ#=) } :U'Cor
H } $shp(T,q catch(IOException e){e.printStackTrace ();} X:EEPGE catch(Exception e){e.printStackTrace ();} 7C7>y/uS 7O)" ` FOH@OY Utility.log(nFileLength); \S ."?!U booRrTS .TpsJXF return nFileLength; Xgat-cy'DA } [/|zH'j: =sgdkAYwP <41ZZ0<EwY //保存下载信息(文件指针位置) NmpnJu|8 private void write_nPos() [=uIb._Wv { eKG2*CV try{ /Vww?9U; output = new DataOutputStream(new FileOutputStream(tmpFile)); =:=/Gz1 output.writeInt(nStartPos.length); `s"d]/85VW for(int i=0;i<nStartPos.length;i++) d
~`V7B2Y { g`0moXz // output.writeLong(nPos); n lGHT output.writeLong(fileSplitterFetch.nStartPos); 3^,QIG output.writeLong(fileSplitterFetch.nEndPos); iPj~I } ^YlI>_3s output.close(); TQ]dW } 3@<zg1.9- catch(IOException e){e.printStackTrace ();} 0N;%2=2_E catch(Exception e){e.printStackTrace ();} -SCM:j%h } 86
.`T l; r.yK, Z>P*@S,6G //读取保存的下载信息(文件指针位置) w0lT%CPx private void read_nPos() Bp? { =qu(~]2( try{ w7TJv4_ DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); $B (kZ int nCount = input.readInt(); 33Az$GXFsq nStartPos = new long[nCount]; 2C=Q8ayvX nEndPos = new long[nCount]; @'6"7g for(int i=0;i<nStartPos.length;i++) /=: j9FF { C! 9} nStartPos = input.readLong(); =9wy/c$ nEndPos = input.readLong(); r^fe4b } %, P>%'0 input.close(); *ZrSiIPP } !t#F/C catch(IOException e){e.printStackTrace ();} xHA0gZf catch(Exception e){e.printStackTrace ();} Fc 6iQ } L|j%S 3=mr
"&]r: 8LzBh_J? private void processErrorCode(int nErrorCode) u<xo/=Z { =r2]uW9 System.err.println("Error Code : " + nErrorCode); I/6)3su% } N2C7[z+l` i^msjA ac{?+]8} //停止文件下载 ?)D^~/
A public void siteStop() b KtD"JG\ { S\i@s_ bStop = true; T{v>-xBRy for(int i=0;i<nStartPos.length;i++) w_tJ7pz8T fileSplitterFetch.splitterStop(); (Z]HX@"{J Kn`M4O >l']H*&B< } 80OtO#1y } p'_%aVm7 //负责部分文件的抓取 +]Zva:$#` **FileSplitterFetch.java (V:E2WR */ @(g_<@Jz package NetFox; b aV>N[F& W/$Zvl QS[L~97m2M import java.io.*; PNs~[ import java.net.*; =FP0\cQ. 4GdX/6C. 58Xzup_" public class FileSplitterFetch extends Thread { e'%v1-&sP "qz3u`[o (t+;O; String sURL; //File URL ZBT1Y.qA long nStartPos; //File Snippet Start Position 46@{5)Tq long nEndPos; //File Snippet End Position 'k0[rDFc#3 int nThreadID; //Thread's ID Pz*_)N}j > boolean bDownOver = false; //Downing is over m0n)dje boolean bStop = false; //Stop identical r0;:t FileAccessI fileAccessI = null; //File Access interface YyAJ m^o "TyJP[/ u$#Wv2| mk public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException q[q?hQ/b { a' Ki;]q this.sURL = sURL; }je,")#W this.nStartPos = nStart; S-Y=-" this.nEndPos = nEnd; f5AjJYq1 nThreadID = id; \wcam`f fileAccessI = new FileAccessI(sName,nStartPos);//定位 {%lXY Myu } W]M)Q}:Y Mips.Bx D"(L5jR8m@ public void run() -VxTx^)> { 4fk8*{Y while(nStartPos < nEndPos && !bStop) y;wx?1) { ULrr=5&8 !* Ti}oIo& g9D^) V try{ '. Ed`?<p URL url = new URL(sURL); NX`*%K HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); o1W:ox?kO httpConnection.setRequestProperty("User-Agent","NetFox"); v\16RD String sProperty = "bytes="+nStartPos+"-"; O/AaYA& httpConnection.setRequestProperty("RANGE",sProperty); @AHm!9?o Utility.log(sProperty); c0B|F g8qgk:} A1'hlAGF InputStream input = httpConnection.getInputStream(); )'17r82a //logResponseHead(httpConnection); <h%O?mkC {;toI 4#x5MM byte[] b = new byte[1024]; $3`>{3x$ int nRead; ;<yd^Xs while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) {~!q`Dr3?q { @1.QEyXG nStartPos += fileAccessI.write(b,0,nRead); *f&EoUk}F //if(nThreadID == 1) NI#X@ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); NH$r
Z7$ } \^ghdU Dd;Nz (?_S6HE Utility.log("Thread " + nThreadID + " is over!"); qmO6,T-| bDownOver = true; w0w G-R ? //nPos = fileAccessI.write (b,0,nRead); G'3qzBJ# } FZ!`B]]le, catch(Exception e){e.printStackTrace ();} H
0+dV3 } il|1a8M2~ } ~ P~ M@ed>.
;};wq&b# //打印回应的头信息 z<H~ItX,n public void logResponseHead(HttpURLConnection con) HGm 3+, { 6qcO?U for(int i=1;;i++) @-UL`+ { .>Ljnk String header=con.getHeaderFieldKey(i); DXz}YIEC if(header!=null) H*#s
}9=kZ //responseHeaders.put(header,httpConnection.getHeaderField(header)); fRg`UI4w} Utility.log(header+" : "+con.getHeaderField(header)); I%-
" |]$ else =FE|+!>PA break; 4`JH&))} } iw*Nq,( } afYc\-" /|xra8?H[ J7r|atSk public void splitterStop() aW>6NDq( { bh^LIU bStop = true; ,-7R(iMd }
=-_B:d; m(pE5B( EwOV;>@T? } V(Ub!n:j K|dso]b/ .e_cgad : /* ^]{R.(#z **FileAccess.java ByCnD *//文件访问(定位,写) z5)s/;Sc package NetFox; .'Y]R3\M+ import java.io.*; 31/Edd"] s
kg* &|/| ''A) public class FileAccessI implements Serializable{ 0GJn_@hr [Q=dCX9% //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 'fW6
.0fXa RandomAccessFile oSavedFile; FQ=@mjh long nPos; zN
[2YJ$ eImn+_ N3 0v9rv.Y" public FileAccessI() throws IOException HttiX/2~ { `w]s;G[ this("",0); '` pDngX } <~ Sz04 7)s^8+ "~D]E7Q3y public FileAccessI(String sName,long nPos) throws IOException r$2P;Cxj { AhZ8 0! oSavedFile = new RandomAccessFile(sName,"rw"); N!g9*Z this.nPos = nPos; tKpmm`2 oSavedFile.seek(nPos); Nm|!#(L } `ho1nY$)CE O%FPS= 0qX3v<+[6 public synchronized int write(byte[] b,int nStart,int nLen) Th=eNL] { lV%N int n = -1; hiQha5 try{ V7/I>^X oSavedFile.write(b,nStart,nLen); aG^4BpIP n = nLen; iezO9` } gG/!,Q.Qh catch(IOException e) Yb E-6|cz {
EW3(cQbK e.printStackTrace (); k1QpKn* } y- 1 pR j$+nKc$ V,$0p1?J return n; ]Ux<aiY]a
} 5H ue7'LS b#X^=n2 >Q(3*d > } 3+XOZh8 )b:7-}d Zl*X?5u /* KQ~i<1&j **SiteInfoBean.java rb|U;)C */ %"P,1&\^ package NetFox; X-wf:h?i
iRrl^\qn }I
:OsAw public class SiteInfoBean { XHK70: i ^/r7@: WVI{oso# private String sSiteURL; //Site's URL -?0qf,W. private String sFilePath; //Saved File's Path yxH ( c private String sFileName; //Saved File's Name ?Orxmxc
2 private int nSplitter; //Count of Splited Downloading File t2lS
~l) RO.k]x6 o#skR4lwe public SiteInfoBean() Rb.SY{}C {//nSplitter的缺省值为5 g[3)P+ //default value of nSplitter is 5 9^j &VmF this("","","",5); _A=$oVe } ~m$Y$,uH )gMG#>up@ ~P@Q7T* public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) {HCzp,Y { a]MX)? sSiteURL= sURL; DK$s&zf sFilePath = sPath; $fzaPD4. sFileName = sName; f\jLqZY this.nSplitter = nSpiltter; e:5bzk!~ xftBSdVE mVy|{Oh } }b-g*dn]5 QnJZr:4b 2K3{hxB public String getSSiteURL() s{$(*_ { D ^x-^6^ return sSiteURL; w/kt3Lw } I= &stsH 6*3.SGUY RS^lKJ1 U public void setSSiteURL(String value) L>3x9 { eN^qG
42
sSiteURL = value; 43@{JK9G } /\hzb/ (Kv#m
3~
m8o(J\] public String getSFilePath() ]]*7\ :cb { %;rHrDP(> return sFilePath; *#C+iAF|)' } lk( }- WUh$^5W h"/<?3{ public void setSFilePath(String value) Zd')57{ { 1#ft#-g} sFilePath = value; @9lUSk^9 } P9vA7[ #':fkIYe' {62n7'U{ public String getSFileName() z&fwE$Nm { fP(d8xTx2y return sFileName; m+Rv+_R } K[!&b0O s[w6FXt ;oc&Hb public void setSFileName(String value) "\3B^ e, { D>LZP! sFileName = value; ;<(W% _ } *^:N.&] \Z+z?K O #3+!ee27# public int getNSplitter() FSA1gAW6g { '7iSp= return nSplitter; )3>hhuaa } {qN 5MsY c1E'$-
K@ 6x%h6<#xh* public void setNSplitter(int nCount) |\7
ET[Xq { ,&R/4:I nSplitter = nCount; -}KC=,]vh } SN1}xR$ } Z7= `VNHc `.i!NBA'6 xo7Kn+ Kl /* `|ASx8_! **Utility.java 1*@'-mj */ "C I=`= package NetFox; !0vG|C;' uA#P'? T-U}QM_e public class Utility { 'LO^< :gep:4&u xo&]$W8 public Utility()
$7rq3y { }#^
B#?O v#U"pn|M /(.mp<s0 } sXD1C2o E.Jkf\ //线程睡眠 QmCe>+ public static void sleep(int nSecond) n}!PO[m~ { !& z(:d try{ .MP !` Thread.sleep(nSecond); .P7"e5ge } =5(>q5Z* catch(Exception e) mqSQL}vR { @Bf%s(Uj+ e.printStackTrace (); ?'KL11@R } @NNq z } SV~cJ]F #0y)U;dA+w //日志 \cUC9/
b public static void log(String sMsg) VB,?Mo}R { 4}eepJOn System.err.println(sMsg); qa0 yg8,< } mjKS{ Yd#/1!A7u {l/-LZ. public static void log(int sMsg) hHT_V2* { z$?~Y(EY System.err.println(sMsg); f]\CD<g3|E } <U!`J[n% } 4Za7^c. 8&)DE@W WRrd'{sB /* vJ-q*qM1 **TestMethod.java ~;#Y9>7\\' */ 6y9t(m package NetFox; !g(KK|`,m 3tZ]4ms} 98uV6b~g public class TestMethod { 2gCX}4^3b '8{Ne!y -\
EP.Vtz public TestMethod() +/)#( j@ { ///xx/weblogic60b2_win.exe S|]X'f try{ b-{=s+: SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); (4dhuT //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); TwVlg; SiteFileFetch fileFetch = new SiteFileFetch(bean); \<y#R~7s fileFetch.start(); ?MgUY)X } \\u<S=G catch(Exception e){e.printStackTrace ();} S&b*rA02zp \4-"L> A8oo@z68n> } +gJ8{u!=k o!{w"K 2M68CE public static void main(String[] args) 7]||UuF< { 'Pn3%&O$ new TestMethod(); {:]9Q Tq } e= .njMqW5 } Od5JG .] 点击下载更多相关资料
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