-
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
|
/* te(H6c#0 **SiteFileFetch.java avq$aq(3& */ `sqr>QD package NetFox; 0#OyT'~V% import java.io.*; <~5O-.G] import java.net.*; F:q4cfL6 NH|I>vyN _cQ
'3@ public class SiteFileFetch extends Thread { "W"^0To vcdVck@ " Bx@( SiteInfoBean siteInfoBean = null; //文件信息Bean 9{OO'at? long[] nStartPos; //开始位置 6Yn>9llo}= long[] nEndPos; //结束位置 (*$F7oO< FileSplitterFetch[] fileSplitterFetch; //子线程对象 }qso} WI long nFileLength; //文件长度 ]Z5m_-I boolean bFirst = true; //是否第一次取文件 R ?iCJ5 m boolean bStop = false; //停止标志 Cg]|x+ File tmpFile; //文件下载的临时信息 KV$&qM. DataOutputStream output; //输出到文件的输出流 6=]Gom&S IMwV9rF //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) iY/2 `R public SiteFileFetch(SiteInfoBean bean) throws IOException 3h:~NL { jzV"( p! siteInfoBean = bean; 0 YFXF //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 3[u-
LYW tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); lo>9 \ Po if(tmpFile.exists ()) F}So=Jz9h { ]6B9\C.2-_ bFirst = false; ^}Vc||S read_nPos(); neM.M)0 } c`;oV-f else ~'lT8 n_ { IOZw[9](+ nStartPos = new long[bean.getNSplitter()]; Ztmh z_u7 nEndPos = new long[bean.getNSplitter()]; =!q]0# } Uap0O2n _jG|kjFTc ~\JB)ca. Zb=NcEPGy } L"
ejA -c&=3O! 9SsVJ<9,R public void run() `{!A1xKZ { Hi={(Z5tC4 //获得文件长度 SX"|~Pi( //分割文件 uX_#NP/2 //实例FileSplitterFetch B-N//ef} //启动FileSplitterFetch线程 8c.>6
Hy //等待子线程返回 sPi try{ K +vD&Z^ if(bFirst) (G>su { bK%F_v3' nFileLength = getFileSize(); [<f2h-V$ if(nFileLength == -1) *fc8M(]&d { ]|g2V
a~- System.err.println("File Length is not known!"); n{!{,s } qI9j=4s. else if(nFileLength == -2) 6ioj!w<N { Pg T3E System.err.println("File is not access!"); ;)FvTm'"\. } uSR%6=$ else _MC',p& { Eh8GqFEM for(int i=0;i<nStartPos.length;i++) K>+ v" x { uuEvH<1 nStartPos = (long)(i*(nFileLength/nStartPos.length)); *d C| X } P?V+<c{ for(int i=0;i<nEndPos.length-1;i++) =F_uK7W { @`KbzN_h/ nEndPos = nStartPos[i+1]; =hTJp/L } #B~;j5 nEndPos[nEndPos.length-1] = nFileLength; 5%2~/
" } 'S6zk wC] } M
_<
|n n R, QG8
Culv/ //启动子线程 >P
j#?j*Y fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 6<W^T9}v@/ for(int i=0;i<nStartPos.length;i++) esTL3 l{[ { t#P7'9Se8 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), |.Vgk8oTl siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), v];YC6shx nStartPos,nEndPos,i); 8i]
S[$Fc Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); (Z>?\iNJ fileSplitterFetch.start(); mh"PA p } o=Z:0Ukl] // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), *Hn=)q siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); zqj|$YNC // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Fxa{
9'99 nEndPos = " + nFileLength); ,|RKM // fileSplitterFetch[nPos.length-1].start(); i}8OaX3x (.N n|lY<i 12#yHsk //等待子线程结束 @lDnD%vZ` //int count = 0; n>u_>2Ikkj //是否结束while循环 9<rs3 84 boolean breakWhile = false; ]vf_4QW= OSO MFt m&=Dy5 while(!bStop) Rp2h[_> { GjwH C{ write_nPos(); 8g8eY pG Utility.sleep(500); %TI3Eb breakWhile = true; jX4$PfOhR ^!^M Gzu -sv%A7i for(int i=0;i<nStartPos.length;i++) r
jn:E { *^@b0f~vj if(!fileSplitterFetch.bDownOver) [@qjy*5p { $A~aNI breakWhile = false; ILDO/>n break; &V
axv$v} } !j7mY9x+ } AB%i|t if(breakWhile) "
l|`LjP5M break; VOj7Tz9UD \1<aBgKi cPZ\iGy //count++; F6~
;f; //if(count>4) /D9#v1b // siteStop(); _}47U7s8 } jl}9R]Y_2 J1(SL~e], "\Dqtr w System.err.println("文件下载结束!"); Y!]a*== } }8 ;,2E*z catch(Exception e){e.printStackTrace ();} H5d@TB,` } 56YqYu. 91R7Rrne vxf09v{- //获得文件长度 ABoB=0.l public long getFileSize() nt_Cb*K< { K+/wJ9^B int nFileLength = -1; fCu;n%
try{ T0fm6
J URL url = new URL(siteInfoBean.getSSiteURL()); Hj`'4 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 9?sY!gXc httpConnection.setRequestProperty("User-Agent","NetFox"); dCn9]cj/ n\Lsm T] H'l int responseCode=httpConnection.getResponseCode(); V1Ft3Msq if(responseCode>=400) hy#nK:B { MA9E??p3\ processErrorCode(responseCode); +(Hp ".gU return -2; //-2 represent access is error s w>B } $27OrXQ| *lZ V3F rgXX,+cO String sHeader; q}jh>`d V&j]*) VXk[p for(int i=1;;i++) lrkgsv6 { LsGO~EiJ //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 3`D*AFQc //Utility.log(in.readLine()); `;G@qp:A sHeader=httpConnection.getHeaderFieldKey(i); 1k"t[^ if(sHeader!=null) ;xh.95BP` { =_E$* } if(sHeader.equals("Content-Length")) 8@;R2]Q { IV1O/lGp nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); '%e@7Cs break; )Dv;,t } 66B,Krz1n } 4VF]tX?o else (JOR:
1aT break; Z! /_H($ } Yt_tAm } 6&i])iH catch(IOException e){e.printStackTrace ();} 7^.g\Kt? catch(Exception e){e.printStackTrace ();} j?tE# +#>nOn(B 6 Yva4Lv Utility.log(nFileLength); $5ea[nc jN=
!Q&^i[ {LKW%G7 return nFileLength; GRj [2I7: } ]n1#8T&<*z 8:I-?z;S
StNA(+rT //保存下载信息(文件指针位置) +Y+fM private void write_nPos() 0%rE*h9+ { wmbG$T%k try{ (@BB@G output = new DataOutputStream(new FileOutputStream(tmpFile)); ~_CZ1 output.writeInt(nStartPos.length); HYdt3GtJ? for(int i=0;i<nStartPos.length;i++) ZBK)rmhMx { ~.e~YI80 // output.writeLong(nPos); RK&RMN8@ output.writeLong(fileSplitterFetch.nStartPos); LCIe1P2 output.writeLong(fileSplitterFetch.nEndPos); USgO`l\}4 } p+nB@fN/ output.close(); ae0Mf0<#) } R-iWbLD catch(IOException e){e.printStackTrace ();} SdI> catch(Exception e){e.printStackTrace ();} jv29,46K } UY *Z`$ ze8 MFz'm 'g<FL`iP //读取保存的下载信息(文件指针位置) AKLFUk private void read_nPos() o<s~455m/ { M_$;"NS+} try{ j~in%|^ DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); [p0_I7 int nCount = input.readInt(); 6m(+X
MS nStartPos = new long[nCount]; |1!OwQax nEndPos = new long[nCount]; iH)vLD for(int i=0;i<nStartPos.length;i++) Lrt~Q:z2u { j}}as nStartPos = input.readLong(); +4IaX1. nEndPos = input.readLong(); P|f h4b4 } N-<,wUxf input.close(); ?6\A$? } @v6{U? catch(IOException e){e.printStackTrace ();} ~2Mcw`< catch(Exception e){e.printStackTrace ();} ?ODBW/{[G } M@. 2b. ygV-Fv>PQ S[/D._5QD% private void processErrorCode(int nErrorCode) L?(1
[jB4G { [--] ?Dr System.err.println("Error Code : " + nErrorCode); ZD?LsD 3 } zU|'IW& TuwSJS7 ZQ\O|
n8 //停止文件下载 Z2]\k|%<Fa public void siteStop() ZOJ7^g { ,/p.!+ bStop = true; )q{e L$ for(int i=0;i<nStartPos.length;i++) v~!_DD
au fileSplitterFetch.splitterStop(); CfOhk <HW2W"Go\ 8fWIZ } uF*tlaV6 } :G<~x8]k0 //负责部分文件的抓取 YMwL(m1 **FileSplitterFetch.java >o"0QD */ ?,Wm|xY package NetFox; UPuG&A#VV &:C(,`~ 6se[>'5 import java.io.*; srU*1jD) import java.net.*; :?3y)*J! ~05(92bK 8\`otJY public class FileSplitterFetch extends Thread { *U,W4>(B cbx(
L8 1[?xf4EMG String sURL; //File URL ARB^] long nStartPos; //File Snippet Start Position <5c^DA long nEndPos; //File Snippet End Position M1Th~W9l int nThreadID; //Thread's ID p!LaR.8] boolean bDownOver = false; //Downing is over u&Xn#fh boolean bStop = false; //Stop identical ^12}#I FileAccessI fileAccessI = null; //File Access interface +\B.3%\- +227SPLd !?{%9 public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException AT^MQvn
{ kqS_2[=] this.sURL = sURL; TGG-rA6@Lx this.nStartPos = nStart; ueJ_F#y this.nEndPos = nEnd; n]_<6{: U nThreadID = id; wcDb| H& fileAccessI = new FileAccessI(sName,nStartPos);//定位 u,S}4p&l } G:PcV_ihx MOP#to)k& 3q (]Dg;v public void run() z
2Ao6*% { XV<{tqa while(nStartPos < nEndPos && !bStop) } q r
, { YksJ$yH^ >56;M7b(K 5AAPtZ\lH try{ [iG4qI URL url = new URL(sURL); URxy*) HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); {F$MZ2 E httpConnection.setRequestProperty("User-Agent","NetFox"); G c:oSvm String sProperty = "bytes="+nStartPos+"-"; }z wHUf9q1 httpConnection.setRequestProperty("RANGE",sProperty); MB(l*ju0 Utility.log(sProperty); ! lm0zR
oIY@xuj ca!x{,Cvnj InputStream input = httpConnection.getInputStream(); naW!Mga //logResponseHead(httpConnection); v0~*?m4 @{^6_n+gT% rt!Uix& byte[] b = new byte[1024]; .l]w4Hf int nRead; G2_l}q~ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) k3B]u.Lo { PqwoZo0j nStartPos += fileAccessI.write(b,0,nRead); xcu:'7'K[ //if(nThreadID == 1) IqmQQ_KH // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ,OaPrAt- } \_zp4Xb2 {
BDUl3T 92Df.xI} Utility.log("Thread " + nThreadID + " is over!"); Z<Ke/Xi bDownOver = true; h*X
u/aOg //nPos = fileAccessI.write (b,0,nRead); gK"E4{y_@ } JNgl catch(Exception e){e.printStackTrace ();} S"joXmJ/-C } 7S]akcT/ } J*'#!
xIa "( P-VX D4CiB"g3* //打印回应的头信息 :k.C|V!W public void logResponseHead(HttpURLConnection con) Nm=\~LP90 { UZRCJ for(int i=1;;i++) C{Er% { O'<cEv'B* String header=con.getHeaderFieldKey(i); g_t1(g*s if(header!=null) "G
@(AE( //responseHeaders.put(header,httpConnection.getHeaderField(header)); x 3?:"D2 Utility.log(header+" : "+con.getHeaderField(header)); !8i[.EAT else Ax;i;<md break; -_|U"C$ } i\u m;\ } cv/ V9i[dF VWR6/,N^_ public void splitterStop() (GJW3 { T*sB Wn'am bStop = true;
)\r;|DN } Z3]ut#` ")ZsY9-P F~_)auH } vT>ki0P_; 4{oS(Vl! Yy:Q/zwo /* %o9;jX **FileAccess.java /SDDCZ`;|c *//文件访问(定位,写) XT
'v7 package NetFox; wst)O{ 4 import java.io.*; ir*T,O
2J H+ Y+8 6S2v3 public class FileAccessI implements Serializable{ v"dj%75O?e ;\Vi~2!8 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 /_MEb42& RandomAccessFile oSavedFile;
cfEi] long nPos; 2m/=0sb\{ 'v*Y7zZ#K BVpRkUC" public FileAccessI() throws IOException L=wg"$ { hhVyz{u this("",0); m;"i4! } m!-,K8 )cX6o[oia X3j<HQcK public FileAccessI(String sName,long nPos) throws IOException j3`"9bY { !(EJ. |LH oSavedFile = new RandomAccessFile(sName,"rw"); #YMU}4=: this.nPos = nPos; N6BFs( oSavedFile.seek(nPos); |
Djgm7$* } `II/nv0jn ^KK6 d a:(.{z?nM public synchronized int write(byte[] b,int nStart,int nLen) s1eGItx[w { g
:me:M int n = -1; 5-ju5z?= try{ HFL(t] oSavedFile.write(b,nStart,nLen); _g(4-\ n = nLen; ['SZe0 } mzl %h[9iI catch(IOException e) pU |SUM { S>oQm e.printStackTrace (); 6(`Bl$M9 } aBO%qmtt MWS=$N)v* 5`B!1 return n; qdFYf/y } mGmkeD' XY;cz Gn*vVZ@`x } "c6(=FFq OBY Q( C\X /* prC1<rm **SiteInfoBean.java xCOC5f5*@ */ :Sx!jx>W package NetFox; )PU?`yLTr #UcqKq K0i[D" public class SiteInfoBean { D4x~Vk%H x*A_1_A Ifm|_ private String sSiteURL; //Site's URL 8tM40/U$ private String sFilePath; //Saved File's Path 0!c^pOq6 private String sFileName; //Saved File's Name qe!\ oh private int nSplitter; //Count of Splited Downloading File y/ #{pyJ h] (BTb#- qd9CKd public SiteInfoBean() mE"?{~XVL {//nSplitter的缺省值为5 (YbRYu //default value of nSplitter is 5 d5zF9;[ this("","","",5); :h>d'+\ } \B'rWk33, 1%YjY"j+ (1r.AG`g public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) Khbkv { ab 1qcQ< sSiteURL= sURL; EPQ~V sFilePath = sPath; l;I)$=={= sFileName = sName; d85\GEF9i this.nSplitter = nSpiltter; ?t&sT 38wt=0br `3Gjj&c } %d5;JEgA:g LeA=*+zP[ l@8UL</W public String getSSiteURL() F
j_r
n { 'Jb6CRn return sSiteURL; Nj2f?',;U } o5(p&:1M [/}y!;3iXM %E95R8SL public void setSSiteURL(String value) :GU6v4u { edh?I1/ sSiteURL = value; *RQkL'tRf } "JLKO${ Y .!ThqYo {
jnQoxN public String getSFilePath() *^XfEO {
q$$:<*Uy return sFilePath; e>-a\g } fX,L;Se" 6B)3SC 7gR8Wr ^ public void setSFilePath(String value) =(f+geA"hm { 'E2\e!U/ sFilePath = value; e Ir|% } W|K"0ab }s_'q~R 1nv#Ehorg public String getSFileName() S4j` =<T, { j +j2_\ return sFileName; <MhjvHg } !c`KzqP x/NR_~Rnk qRg^Bp'VD# public void setSFileName(String value) <_HK@E<_HO { gO*:<B g sFileName = value; v$R+5_@[l } FhZ^/= As i<N[s O _~aFzM public int getNSplitter() D-7PO3F:F { *x EcX6ZHX return nSplitter; 93="sS } &UhI1mi]h @J~n$^ke _pSCv:3T public void setNSplitter(int nCount) =&QC&CqEi {
~Qzb<^9] nSplitter = nCount; W+[XNIg5 } |=C&JA } O2|[g8(_F tZS-e6*S huTa
Ei /* ~n:dHK` **Utility.java -@49Zh2' */ D-8NDa(` package NetFox; 4\)"Ih 2s{PE
?*i qg[: public class Utility { bT|NZ!V jtdhdA W+3ZuAP\n public Utility() ,Vz
1l_7 { MHN?ZHC) 74VN3m 'JR2@W`]] } Mp=2}d%P HZBU?{ //线程睡眠 l0Myem
v?z public static void sleep(int nSecond) Cx $M { <szD"p|K try{ nJJ9>#<g$ Thread.sleep(nSecond); Nf0'>`/ } %vjLw` catch(Exception e) )3_I-Ia { \%nFCK0 e.printStackTrace (); `8Y& KVhu } +*2wGAT } aa8xo5tIp gxEa?QH //日志 -!uut7Z| public static void log(String sMsg) CmaV> { ]:CU.M1 System.err.println(sMsg); 8(R%?>8 } ueO&% &61;v@ 7Y$#*
7 public static void log(int sMsg) W2L: { D9H(kk
System.err.println(sMsg); TrxZS_ } j4wcxZYY~ } ,?Pn-aC+ d,}fp) h^F^|WT$ /* M_tY: v **TestMethod.java Ri]7=.QI` */ ~~[Sz#( package NetFox; ;[%_sVIy RZm}%6##ZC '=!@s1;{[; public class TestMethod { (0s7<&Iu LG6VeYe|\X V[-4cu,Ph^ public TestMethod() ^06f\7A { ///xx/weblogic60b2_win.exe w9I7pIIl try{ IYm~pXg^0 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5);
%{\|/#>: //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); k0IW,z% SiteFileFetch fileFetch = new SiteFileFetch(bean); 1:<= zqh0 fileFetch.start(); 4`F(RweGx } >$=-0?. catch(Exception e){e.printStackTrace ();} ]3tg|?%B ;SAurG$ Jx;"@ } o:ki IZ] ~F8M_ S pxkB! public static void main(String[] args) c$),/0td| { {6%vmMbJ new TestMethod(); Fj\}&H*+ } YUo{e=m| } 7a_pO1MBL 点击下载更多相关资料
|