-
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
|
/* RWA|%/L **SiteFileFetch.java >tP/"4c */ XNu2G19jb package NetFox; @zfeCxVOA import java.io.*; R52q6y:<x import java.net.*; r(vk2Qy |hp_X>Uv' WKxJ`r\ public class SiteFileFetch extends Thread { QS=n
50T, s3kh (N 0?,EteR SiteInfoBean siteInfoBean = null; //文件信息Bean C<w9f long[] nStartPos; //开始位置 +$},Hu69j long[] nEndPos; //结束位置 "
I`YJEv FileSplitterFetch[] fileSplitterFetch; //子线程对象 _Zf1=&U#/ long nFileLength; //文件长度 8Yq6I>@! boolean bFirst = true; //是否第一次取文件 1ygu>sKS&A boolean bStop = false; //停止标志 !c1
E File tmpFile; //文件下载的临时信息 ew?UHV DataOutputStream output; //输出到文件的输出流 S2jo@bp! NV9= ~cx //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) C
UBcU public SiteFileFetch(SiteInfoBean bean) throws IOException ]iLfe&f { Iobo5B siteInfoBean = bean; @gX@mT" //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); C?x tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); uc7np]Z if(tmpFile.exists ()) 5W<BEcV\ { ,PN>,hFL bFirst = false; ={maCYlE. read_nPos(); =Z-.4\ 3 } !JYDg else [U3z*m>e; { qd{|"(9B nStartPos = new long[bean.getNSplitter()]; &Vgjd> nEndPos = new long[bean.getNSplitter()]; 2
H^9Qd } \UB<'~z6! f "Iv M;Vx[s,#, \mc~w4B[)3 } 6oUT+^z# 5QmF0z)wR
8CEy#%7]} public void run() A;kAAM { )_bXKYUX*0 //获得文件长度 ;ejC:3yO //分割文件 ZTS*E,U% //实例FileSplitterFetch Ti' GSL //启动FileSplitterFetch线程 :l9C7o //等待子线程返回 yY_]YeeR try{ =~aJ]T}( if(bFirst) kt;X|`V{5z { wRie{Vk nFileLength = getFileSize(); ;#xhlR* ~ if(nFileLength == -1) $ h_ @`j { n }MG System.err.println("File Length is not known!"); L7Skn-*tnA } mbS
&> else if(nFileLength == -2) UhEJznfi { kP;Rts8JD System.err.println("File is not access!"); z5Nw+#m|
i } D]oS R7h else $<33E e:a { )UJ]IB-Q|1 for(int i=0;i<nStartPos.length;i++) +U6!
bu>C { TD3R/NP nStartPos = (long)(i*(nFileLength/nStartPos.length)); _bMs~%?~/ } 'Y"q=@Ei9 for(int i=0;i<nEndPos.length-1;i++) vkR"A\: { i!,>3 nEndPos = nStartPos[i+1]; ![Jxh,f } *2@q=R-1 nEndPos[nEndPos.length-1] = nFileLength; , H[o.r= } T_gW't>
} 9Xm"kVqd/ VNytK_F0P }l[t0C
t //启动子线程 V@Po} fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; N$=<6eQm for(int i=0;i<nStartPos.length;i++)
d;CD~s { Z)?"pBv' fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), AMO{?:8Y; siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), TUk1h\.q nStartPos,nEndPos,i); zSq+#O1# Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); j
f^fj- fileSplitterFetch.start(); !Sw7!h.ut } f'%}{l: ss // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), \j K?R
6 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); cCj}{=U // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 8H{@0_M nEndPos = " + nFileLength); *YDx6\><
// fileSplitterFetch[nPos.length-1].start(); }D|"$* u(REEc~nj ^rxXAc[ //等待子线程结束 LL,~&5{ //int count = 0; v=X\@27= ? //是否结束while循环 mY%PG boolean breakWhile = false; a!>AhOk. 8\ :T*u3 ;#j/F]xG while(!bStop) Y}Qu-fm { XVI+Y write_nPos(); XE>XzsnC Utility.sleep(500); p6ZKyi breakWhile = true; .Wa6?r<g h"<rW7z r<bg->lX for(int i=0;i<nStartPos.length;i++) i@g6%V= { sjzZl*GSy if(!fileSplitterFetch.bDownOver) kU#$ { L:%h]- breakWhile = false; 0,VbB7 z break; thq(tK7 } I/'jRM } 5B@&]-'~ if(breakWhile) G-;pMFP(? break; s=KA(4p ,Ma$:6`f 5SK.R;mn //count++; -$mzzYH //if(count>4) <GR]A|P // siteStop(); jdoI)J@9H } <
Gu
s9^_ \9 ^wM>U UHxXa*HyI System.err.println("文件下载结束!"); GadD*psD2 } oFY'Ek;d catch(Exception e){e.printStackTrace ();} b9"Q.*c<Z^ } E7 7Au;TL `VS/Xyp *VL-b8'A< //获得文件长度 TT29LC@ public long getFileSize() %3~jg { _\u'~wWl int nFileLength = -1; :@n e29,} try{ /)v X|qtIY URL url = new URL(siteInfoBean.getSSiteURL()); -1U]@s HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); okfhd{9 httpConnection.setRequestProperty("User-Agent","NetFox"); 2.2 s>?\ |qZ4h7wL $@DXS~UQA int responseCode=httpConnection.getResponseCode();
!$&K~>` if(responseCode>=400) U?.VY@ { n.Ekpq\ processErrorCode(responseCode); ,@GI3bl return -2; //-2 represent access is error jagsV'o2 } =G*<WcR m}8c.OJ>K` ! 5 ]/2 String sHeader; ]Wfnpqc^ hGzj}t
W8d 0naegy?, for(int i=1;;i++) l$z-' { C
!uwD //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); a N_M //Utility.log(in.readLine()); ,Y}HP3
sHeader=httpConnection.getHeaderFieldKey(i); .,feRK>3 if(sHeader!=null) &Tl3\T0D { ;B!&( 50e if(sHeader.equals("Content-Length")) z+Y0Zh";/# { +AXui|mn nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ]BX|G`CCc break; a^|mF#
z } 0urQA_JC } fF<~2MiKw else 4R}2H>VV% break; z${DW@o3 } &(irri_ } J4=~.&6 catch(IOException e){e.printStackTrace ();} %~G)xK?W* catch(Exception e){e.printStackTrace ();} Y+lZT4w _?mu2!X V\4'Hd Utility.log(nFileLength); 'V } -0 3-z57f,}6~ o5A@U0c_ return nFileLength; b$%W<D } l2z@t3{ $xNZ.|al G4]T //保存下载信息(文件指针位置) E ekX|* private void write_nPos() 5_0Eh!sx { 51l : try{ CO-9-sQx
output = new DataOutputStream(new FileOutputStream(tmpFile)); AvH^9zEE( output.writeInt(nStartPos.length); qy/xJ>: for(int i=0;i<nStartPos.length;i++) r m\] { UJ
n3sZ<} // output.writeLong(nPos); PkMN@JS output.writeLong(fileSplitterFetch.nStartPos); XeJn,= output.writeLong(fileSplitterFetch.nEndPos); K#tT \ } z'j4^Xz?%$ output.close(); Qne@Vf kA } bRfac/:} catch(IOException e){e.printStackTrace ();} o4\\q66K catch(Exception e){e.printStackTrace ();} 9J$N5 } lE'2\kxI? Wv8?G~> KZ>cfv-&a //读取保存的下载信息(文件指针位置) u{o3 private void read_nPos() RGf&KV/ { RG0kOw0 try{ -LhO
</l DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); J<yt/V] int nCount = input.readInt(); o7;lR? nStartPos = new long[nCount]; eD4X:^@ nEndPos = new long[nCount]; Uyj6Ij_Pj) for(int i=0;i<nStartPos.length;i++) 58V`I5_ { <Y:{>= nStartPos = input.readLong(); Nu/wjx$b nEndPos = input.readLong(); B/0Xqyu } +Hgil input.close(); f; w\k7 # } C6Lc catch(IOException e){e.printStackTrace ();} =;ClOy9 catch(Exception e){e.printStackTrace ();} i}[cq_wJ } j4k\5~yzS gF#HNv Py y!B private void processErrorCode(int nErrorCode) 3K!(/,` { S6Y2(qdP System.err.println("Error Code : " + nErrorCode); |Bz1u|uc } [;t-XC?[nk -Aaim`06bv 0"}J!c<g //停止文件下载 kOdXbw9v public void siteStop() ~t^
Umx"Ew { 1o`zAJ8|2 bStop = true;
4A"3C for(int i=0;i<nStartPos.length;i++) \2)D
fileSplitterFetch.splitterStop(); xsu9DzPf&{ :y'EIf <-;/,uu } ,cE yV74 } `,QcOkvbC //负责部分文件的抓取 VK286[[fv **FileSplitterFetch.java @QteC@k */ 0v+-yEkw package NetFox; l0 =[MXM4 /s*.:cdH e`n+U-)z import java.io.*; R!f<6l8#W import java.net.*; txE=AOY5 t.y-b`v <yl%q*gls public class FileSplitterFetch extends Thread { z_93j3# O,6Wdw3+-3 ~=va<%{
U String sURL; //File URL ;NU-\<Q{ long nStartPos; //File Snippet Start Position VWq]w5oQO long nEndPos; //File Snippet End Position '_d4[Olu int nThreadID; //Thread's ID 5EU~T.4C< boolean bDownOver = false; //Downing is over I+=+ ,iXhB boolean bStop = false; //Stop identical wg%g(FO FileAccessI fileAccessI = null; //File Access interface % IHIXncv[ "!+gA& {ETM > public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Z_Wzm!: { J3 `0i@ this.sURL = sURL; :of(wZa3Q this.nStartPos = nStart; Hz\@# this.nEndPos = nEnd; |Dt_lQp# nThreadID = id; (\0
<|pW fileAccessI = new FileAccessI(sName,nStartPos);//定位 .G.WPVE } CYRZ2Yrk?" /~MH]Gh 4-~Z{#- public void run() &rG B58 { KL9k9|!p while(nStartPos < nEndPos && !bStop) KL3Z( { ? D
_kQl >H^#!eaqw e2f+Fv
9 try{ {`QA.he. URL url = new URL(sURL); 8Qo'[+4; HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 6<EGH*GQ$ httpConnection.setRequestProperty("User-Agent","NetFox"); N_IKH)
String sProperty = "bytes="+nStartPos+"-"; Cb1w8l0 httpConnection.setRequestProperty("RANGE",sProperty); D"J',YN$ Utility.log(sProperty); g5
T 0z'GN#mT5 S=(<m%f InputStream input = httpConnection.getInputStream(); Y=p!xr> //logResponseHead(httpConnection); h);^4cU M?!@L:b[ ^|H={pd'c0 byte[] b = new byte[1024]; #l ZK_N|1x int nRead; N+'j on}U while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) _Ao$)Gu) { P0e-v0 nStartPos += fileAccessI.write(b,0,nRead); U@M3.[jw //if(nThreadID == 1) #~!"`B?#* // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); `J1HQ!Z } E7t;p)x 7i*eKC`ZqK ; h\T7pwwb Utility.log("Thread " + nThreadID + " is over!"); ;xZjt4M1 bDownOver = true; HcgvlFb //nPos = fileAccessI.write (b,0,nRead); TjyL])$ } 8q@Z catch(Exception e){e.printStackTrace ();}
pZ&,YX } yEq7ueJ' } TG%B:^Yz!
;%9]G|*{ T1]?E]m{ //打印回应的头信息 7Ml4u%? public void logResponseHead(HttpURLConnection con) h:nybLw? { |@vkQ
for(int i=1;;i++) CZ<T@k { gxN>q4z String header=con.getHeaderFieldKey(i); L-T,[;bl if(header!=null) DcW?L^Mst //responseHeaders.put(header,httpConnection.getHeaderField(header)); <.Ws; HN} Utility.log(header+" : "+con.getHeaderField(header)); 1Y|a:){G else j-":>}oW2. break; ]1|P|Jp } |'q%9# } D7;9D*o\ $@D a|d4 g1s%x=7/ public void splitterStop() #;$]M4 { xWxc1tT` bStop = true; 9 3>4n\ } Qc; kj x@t?7 o\& z3Q&O$5\ } 2yZr!Rb~* "f,{d}u "2l`XH /* @1MnJP **FileAccess.java "9wD|wsz *//文件访问(定位,写) p+;& Gg54 package NetFox; %{@Q7 import java.io.*; 98>GHl'lM jN\u}!\O Cf
2@x public class FileAccessI implements Serializable{ i"WYcF| *'?7OL //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 FJ:^pROpm RandomAccessFile oSavedFile; 5~L]zE long nPos; cCe~OlXQ
lN,?N{6s j]Jgz< public FileAccessI() throws IOException BAf$tyh { 8]ZzO(=@{ this("",0); .T|
}rB<c } 0zaK&]oY0 =dmr,WE T5(S2^)o public FileAccessI(String sName,long nPos) throws IOException iwotEl0*{ { ,`@pi@<"# oSavedFile = new RandomAccessFile(sName,"rw"); 7?$?Yu this.nPos = nPos; LQ jbEYp oSavedFile.seek(nPos); ={qcDgn~C } eU[g@Pq:Y o*S_" \^x{NV@v42 public synchronized int write(byte[] b,int nStart,int nLen) $ik*!om5 { P {TJ$ int n = -1; cHs3:F~~ try{ 8xAV[i oSavedFile.write(b,nStart,nLen); Mo,&h?VOM? n = nLen; U1[)e D` } M:S-%aQ_<y catch(IOException e) \N,ox(f?gW { 9)Fx;GxL e.printStackTrace (); tt"<1
z@ } NRi5 Vp2= c-a,__c?hx 2KlQ[z4Ir return n; ?=VvFfv% } (_T{Z>C/J 6':iW~iI WYP ;s7_ } ;<[X\;|' +yGQt3U ,T$ts /* qJhsMo2IH **SiteInfoBean.java 1Kg0y71" */ f7Gn$E|/r; package NetFox; d1b]+A G4 ;cor\R dzf2`@8# public class SiteInfoBean { eqbN_$> #9vC]Gm Shm> r@C? private String sSiteURL; //Site's URL /^.|m3 private String sFilePath; //Saved File's Path KZm&sk=QM- private String sFileName; //Saved File's Name Gt w>R private int nSplitter; //Count of Splited Downloading File $Ome]+0 c8l>OS5i3_ j4.wd
RK public SiteInfoBean() $v^hzC {//nSplitter的缺省值为5 OQVrg2A%( //default value of nSplitter is 5 %TB(E<p` this("","","",5); I6>J.6luF9 } RK3 yq$ $l7^-SK`E 64s;EC public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) AK:cDKBO { o[|[xuTm sSiteURL= sURL; Y'v[2s sFilePath = sPath; ]lB zp D sFileName = sName; 5xQ-f this.nSplitter = nSpiltter; >=~\b 2]>O ZhS }3pM,. } @<.@X*#I Gw
M:f/eV (3#PKfY+ public String getSSiteURL() I \:WD" { &V"oJ}M/a return sSiteURL; !X>u.}?g } e+
xQ\LH Sj9fq* YOCEEh? public void setSSiteURL(String value) $.G 7Vt { Dl,QCZeM sSiteURL = value; x7j#@C } *@U{[J hHs/Qtq #6`5-5Ks; public String getSFilePath() P3M$&::D- { 6{Wo5O{!\ return sFilePath; f:c'j` } 8|u4xf< 7Cgi& aZfMeW public void setSFilePath(String value) u
v%Q5O4 { bJ^JK sFilePath = value; >oh H4: } &w@]\7L,: DaQ"Df_X UKS5{"=T[ public String getSFileName() )uPJ?
2S9 { S-Uod y return sFileName; @"@a70WHk } .3!Wr*o IqOg{#sm .sMs_ 5D public void setSFileName(String value) s**<=M GK { 36d nS>4 sFileName = value; j\>LJai" } .l}Ap7@ H4/wO _|k$[^ln^ public int getNSplitter() ZsmOn#`=^} { #&3,T1i` return nSplitter; rp Nb. } .`or^`X3 [ks_wvY:' y^.66BH public void setNSplitter(int nCount) *}[\%u$ T { ;>6< u.N nSplitter = nCount; K$E3RB_F } b#j:)PA0C } 2HbnE& eUPa5{P 9&mSF0q /* bO~y=Pa\ **Utility.java mHD_cgKN */ WT
*"V<Z package NetFox; `lhw*{3A AGBV7Kk exRw, Nk4 public class Utility { 7DB_Z/uU ,_z79tC{s V<ESjK8 public Utility() XLh)$rZ { b)wcGBS 2u{~35 w)btv{* } k"wQ9=HP7 :]3X Ez //线程睡眠 Vl^(K_`( public static void sleep(int nSecond) ~!S3J2kG{ { Pt]>AW;i try{ K<JzIuf& Thread.sleep(nSecond); ts]e M1; } FU`(mQ*Yd catch(Exception e) *$p*'vR { hmy%X`%j e.printStackTrace (); r
)|3MUj } r]B8\5|<d } 2y[Q =8FvkNr //日志 W4$o\yA] public static void log(String sMsg) (d9~z { '
jciX]g System.err.println(sMsg); A40DbD\^ad } >e]g T (;NJ<x ''17(% public static void log(int sMsg) woI5a ee| { =H95?\}T[ System.err.println(sMsg); WtSs:D } K#"=*p, } ,p2UshOmd Q*M# e lg%fjBY /* Vax g **TestMethod.java !-I,Dh-A */ DE13x*2 package NetFox; I8#2+$Be+@ e=amh t}t(fJHY` public class TestMethod { _~FfG!H ^X aq,1'~8XR xC76jE4 public TestMethod() 0TN28:hcD { ///xx/weblogic60b2_win.exe so))J`ca) try{ nz 10/nw SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); R'c*CLaiE //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); W'G|sk SiteFileFetch fileFetch = new SiteFileFetch(bean); d_[H|H9i6 fileFetch.start(); )\wkVAm } PgtLyzc catch(Exception e){e.printStackTrace ();} sG g458 Bwg(f_[1 79DNNj~ } ixTjXl2g jCd]ENl+_ ]3r}>/2( public static void main(String[] args) Upz)iOqLi { y4\X~5kU new TestMethod(); iSfRJ:_&6 } 44CZl{pt } [8ZDMe 点击下载更多相关资料
|