-
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
|
/* `Q/\w1-Q **SiteFileFetch.java +\u\BJ!LAJ */ ksJ 1:_ package NetFox; ImD&~^-_< import java.io.*; 'NCx <0* import java.net.*; Eau
V +?[s"( )>^ Ge9d] public class SiteFileFetch extends Thread { ]"htOO \rg;xZa5 ?<5KLvG v SiteInfoBean siteInfoBean = null; //文件信息Bean
QAMcI:5 long[] nStartPos; //开始位置 _meW9)B long[] nEndPos; //结束位置 :7 JP(j2 FileSplitterFetch[] fileSplitterFetch; //子线程对象 Z c#Jb long nFileLength; //文件长度 M _lLP8W} boolean bFirst = true; //是否第一次取文件 D~|q^Ms,% boolean bStop = false; //停止标志 5*Qzw[[= File tmpFile; //文件下载的临时信息 Y7 K2@257 DataOutputStream output; //输出到文件的输出流 k7L4~W rz2,42H] //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) jGo\_O<of public SiteFileFetch(SiteInfoBean bean) throws IOException qn,fx6v4 { +x/vZXtOK siteInfoBean = bean; >6@,L+-6r //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); &3xda1H tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ?^^TR/ if(tmpFile.exists ()) uq7/G| { ^#K^W V bFirst = false; skTtGz8R[ read_nPos(); .7:ecFKk } J!dv"Ww" else rusYNb1J { -w8?Ur1x: nStartPos = new long[bean.getNSplitter()]; j~>J?w9<O nEndPos = new long[bean.getNSplitter()]; R6:m@ } h?}S|>9 T&bB8tQk a<>cbP l<ZHS'-;8 } 2R^Eea 2+pXtP@O Fpwhyls public void run() rY1jC\ { @xso{$ z?j //获得文件长度 eb6y-TwY //分割文件 {ot6ssT=D //实例FileSplitterFetch =<zlg~i //启动FileSplitterFetch线程 "(kiMog- //等待子线程返回 E9t8SclV try{ "Vp:Sq9y if(bFirst) l8_RA { fA[T5<66 nFileLength = getFileSize(); :Z_abKt if(nFileLength == -1) Ir*{IVvej { +qqCk System.err.println("File Length is not known!"); "{3|(Qs } PI,2b(`h_ else if(nFileLength == -2) Ml{4)%~Y7f { FFmXT/K"/j System.err.println("File is not access!"); 'YYT1H) } N pQOLX/<? else {0AlQ6.@> { lH@goh for(int i=0;i<nStartPos.length;i++) `krVfE;_O { 8YgRJQZ! nStartPos = (long)(i*(nFileLength/nStartPos.length)); 78<fbN5}r } oz[G'[\}F for(int i=0;i<nEndPos.length-1;i++) ;TwqZw[. { m5HMtoU nEndPos = nStartPos[i+1]; kGakdLl } S&k/Pc nEndPos[nEndPos.length-1] = nFileLength; oYJ<.Yxeb } cf*~Gx_l } ]@}hyM[D; TC@F*B; !1]jk(Z //启动子线程 s$0dLEa9 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; X &G]ci for(int i=0;i<nStartPos.length;i++) JRE\R&>g { nr(C*E fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), -~H
"zu` siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ymnK `/J!Q nStartPos,nEndPos,i); FP0GE Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); g:p`.KuB fileSplitterFetch.start(); +JXn } A_2lG!!
6 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), v;}MHl siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); CP$,fj // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ~3-+~y=o~ nEndPos = " + nFileLength); ?[WUix; // fileSplitterFetch[nPos.length-1].start(); jMX|1b P=y1qqC 3Q )" //等待子线程结束 \8vZZ t //int count = 0; wsc=6/#u //是否结束while循环 AUfcf* boolean breakWhile = false; 0Jd>V KF!d? /len8FRf while(!bStop) 3hzz*9/n { DiZv sc write_nPos(); #!_ViG )2^ Utility.sleep(500); <KStlfX breakWhile = true; d`j<Bbf- +apn3\_ 1}p:]/; for(int i=0;i<nStartPos.length;i++) :3J`+V}9; { r/0AM}[!*j if(!fileSplitterFetch.bDownOver) C{G%"q { yLl:G; breakWhile = false; 8|+@A1)&4 break; LA(/UA3Izd } j<9^BNl } * <?KOM if(breakWhile) ^?A>)?Sq break; gd]_OY7L N
f}ZG c`\qupnY //count++; /N./l4D1K- //if(count>4) p6Ia)!xOGF // siteStop(); BE0Xg } %;Z_`W A,7* 52U aqQ
U7 System.err.println("文件下载结束!"); 0j}@lOt( } (#qQ;ch catch(Exception e){e.printStackTrace ();} 4CS$%Cu\?w } 0fV}n:4Pq ?f!&M e. E$Ej]w //获得文件长度 zcio\P=^|B public long getFileSize() `nc=@" 1 { n*#HokX int nFileLength = -1; _U,Hi?b"$} try{ t+,2 p|B URL url = new URL(siteInfoBean.getSSiteURL()); 0a,B&o1 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); UA4MtTp` httpConnection.setRequestProperty("User-Agent","NetFox"); 9tmnx')_ GK3cQw ?]+!gz1 int responseCode=httpConnection.getResponseCode(); >J:liB|( if(responseCode>=400) 8zjJshE/ { _5OxESE processErrorCode(responseCode); *hpS/g/3\ return -2; //-2 represent access is error R(f%*S4 } ndk~(ex|j wawJZ+V lt\Bm<"z!1 String sHeader; TpHzf3.I p>+Q6o9O B@' OUcUR for(int i=1;;i++) [3x*47o "z { 20:![/7:! //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); <" 0b8 Z //Utility.log(in.readLine()); P#rS.CIh sHeader=httpConnection.getHeaderFieldKey(i); X'xnJtk if(sHeader!=null) Ypinbej { (SA^>r if(sHeader.equals("Content-Length")) $"6Gv { >3I|5kZ6 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); }1.'2.<Y break; }5Km \OI } $9W,1wg } \GK]6VW else crgVedx~} break; #TB
3|= } AyOy&]g } :g+wv}z catch(IOException e){e.printStackTrace ();} vVjk9_Ul catch(Exception e){e.printStackTrace ();} /HdjPxH J M;WCV%NM hK %FpGYA Utility.log(nFileLength); YmHu8H_Q L} K8cB o76{;Bl\O return nFileLength; ,Z8)DC= } &QFc)QP{ .F/s( 0="wxB //保存下载信息(文件指针位置) ezS@`_pR; private void write_nPos() s'BlFB n { l4U try{ F4IU2_CnPD output = new DataOutputStream(new FileOutputStream(tmpFile)); h&rZR`g output.writeInt(nStartPos.length); Q9&H/]"v for(int i=0;i<nStartPos.length;i++) fGWXUJ { ~{pds // output.writeLong(nPos); "kjSg7m*: output.writeLong(fileSplitterFetch.nStartPos); Y<_;8%S output.writeLong(fileSplitterFetch.nEndPos); zu
7Fq]zD } drbim8!q~ output.close(); eAjsMED } ju1B._48 catch(IOException e){e.printStackTrace ();} |w5,%#AeO$ catch(Exception e){e.printStackTrace ();} {TDZDH } ((=T E aYc^ 9*7 !.499H3 //读取保存的下载信息(文件指针位置) !1Ht{cA0 private void read_nPos() wEQZ9?\ { msQ?V&+< try{ LG??Q+`l DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); B`)bo}h int nCount = input.readInt(); _ne
r nStartPos = new long[nCount]; {HFx+<JG nEndPos = new long[nCount]; 1Vs>G for(int i=0;i<nStartPos.length;i++) 3^-\=taN<m { 7;pQ'FmZJ nStartPos = input.readLong(); bRr3:"=sE nEndPos = input.readLong(); F45-M[z } /<Z3x
_c input.close(); Y8N+v+V/ } FuG;$';H75 catch(IOException e){e.printStackTrace ();} N*)O_Ki catch(Exception e){e.printStackTrace ();} NCgKWyRR } ,;f5OUl?[ F^5\w-gLY F3L+X5D.yu private void processErrorCode(int nErrorCode) LCuz_LTFq{ { 2rb@Md]dx System.err.println("Error Code : " + nErrorCode); =q*c}8R_0 } yet~ yD@1H(yM 69`*u<{PC //停止文件下载 )"7z'ar
public void siteStop() d\25 { #7KR`H bStop = true; tYhcoV for(int i=0;i<nStartPos.length;i++) D
,[yx=' fileSplitterFetch.splitterStop(); /QQjb4S} RiFUa
$ T`9nY! } 6h0}ZM } %pqB/ //负责部分文件的抓取 Zay%QNsb **FileSplitterFetch.java $EzWUt */ {d.K)8\ package NetFox; 9!.S9[[N
;v/un <~S]jtL.j: import java.io.*; ~wO-Hgd import java.net.*; dN7.W
N|3#pHm@ }$
Kd-cj+ public class FileSplitterFetch extends Thread { CTxP3a9] {qOqtkj CyXaHO String sURL; //File URL }Yc5U,A; long nStartPos; //File Snippet Start Position lQy-&d|=#^ long nEndPos; //File Snippet End Position |kTq
&^$ int nThreadID; //Thread's ID
:6/$/`I0W boolean bDownOver = false; //Downing is over ^;tB,7:*V boolean bStop = false; //Stop identical lS#^v#uS FileAccessI fileAccessI = null; //File Access interface -!K&\hEjj k|{ 4"4r JpxQS~VX public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException GRaU]Z]ck { g's!\kr this.sURL = sURL; D4uAwmc this.nStartPos = nStart; %0Qq~J@Lu this.nEndPos = nEnd; e1%kW1Z9 nThreadID = id; %?Q&a ] fileAccessI = new FileAccessI(sName,nStartPos);//定位 ^AiQNL} } 6ud<U#\b& >0uj\5h)I] `6;$Z)=. public void run() 5:C>:pA V { >s1?rC while(nStartPos < nEndPos && !bStop) `5rfO6; { [HL>Lp&A? xW2?\em $?dQ^]<, try{ XVJH>Zw URL url = new URL(sURL); hljKBx~ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); L&~' SC httpConnection.setRequestProperty("User-Agent","NetFox"); o8v,178 String sProperty = "bytes="+nStartPos+"-"; B9%%jEH* httpConnection.setRequestProperty("RANGE",sProperty); =LGSywWM9 Utility.log(sProperty);
g/i%XTX> 1
-C~C]& ;tF&r1 InputStream input = httpConnection.getInputStream(); R[)bGl6# //logResponseHead(httpConnection); =;E0PB_w 9!kp3x/` <q>d@Foi byte[] b = new byte[1024]; )[|_q, int nRead; h=JW^\?\] while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) yz5! >|EB { :@eHV=|+> nStartPos += fileAccessI.write(b,0,nRead); q]VB}nO //if(nThreadID == 1) 5G$ ,2i( // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Y*\N{6$2 } f=u +G E!BzE_|i ~(7ct*U~ Utility.log("Thread " + nThreadID + " is over!"); _N)&<'lB< bDownOver = true; 1iNMgA //nPos = fileAccessI.write (b,0,nRead); =p"ma83 } p\9}}t7n catch(Exception e){e.printStackTrace ();} w7&.Uqjf } WglpWp) } &%;n9K o*ucw3s> 4nQ5zwiV //打印回应的头信息 M ?AX:0 public void logResponseHead(HttpURLConnection con) 8FZC0j.^DH { s@{~8cHgU for(int i=1;;i++) ^E:-Uy
{ .N@+Ms3 String header=con.getHeaderFieldKey(i); /y6f~F if(header!=null) cza_LO( //responseHeaders.put(header,httpConnection.getHeaderField(header)); 2eA.04F Utility.log(header+" : "+con.getHeaderField(header)); 3D1y^I else ts}OE break; GZKYRPg } Yyr9Kj: } -A=3W3:C 9q
2 vT^ *Ms"{+C public void splitterStop() IkjJqz { 6x=w-32+ y bStop = true; zSU,le } oif|X7H; 4*Gv0#dga 41s\^'^& } ZoSyc--Bv :FfEjNil f}p`<z /* &/ED.K **FileAccess.java RqP_^tB *//文件访问(定位,写) RyG6_G} package NetFox; B]:|;d import java.io.*; ?6hd(^ q\|RI;W :#35mBe}k public class FileAccessI implements Serializable{ u[Si=)`VPk `JpFqZ'58 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 VJT /9O)Z| RandomAccessFile oSavedFile; Y_n3O@, long nPos; {"%a-*@% E2YVl%. \AH5zdK public FileAccessI() throws IOException _cj=}!I { hliO/3g this("",0); c$^v~lQS } W5= j&&|! EhM=wfGKw _aF8Us public FileAccessI(String sName,long nPos) throws IOException D,[Nn_N { ]'M B3@T oSavedFile = new RandomAccessFile(sName,"rw"); UcOP 0_/ this.nPos = nPos; X0-PJ-\aD@ oSavedFile.seek(nPos); >u(^v@Ejf } J:gC1g^ $I>]61l% $/tj<++W public synchronized int write(byte[] b,int nStart,int nLen) eq(h{*rC { WZPj?ou`G int n = -1; cs.t#C try{ xW*Lceb oSavedFile.write(b,nStart,nLen); g,!.`[e'ex n = nLen; H.E=m0np } OFyy!r@? catch(IOException e) lS7L| { cNxxX!P/ e.printStackTrace (); sxph#E% } ,Xfu?Yan ]1W xa? c s*E9 return n; ~;H,cPvrEg } 9d-'%Q>+ B["+7\c<~ /|i*'6* } 2,`X@N`\ $fT5Vc]B4 f\_PNZCc /* qlYi:uygY **SiteInfoBean.java {FKr^)g */ *fIn<Cc package NetFox; Skg/iH"( D&2NO/
R o{fYoBgr public class SiteInfoBean { U5H%wA['m TK[[6IB njg0MZBqA private String sSiteURL; //Site's URL n8=Dzv0 private String sFilePath; //Saved File's Path 8IQ}%|lN private String sFileName; //Saved File's Name +hr|$ private int nSplitter; //Count of Splited Downloading File l!Xj UnRF +~aIT=i3 9T5 F0?qd public SiteInfoBean() ~ZSX84~@u {//nSplitter的缺省值为5 LQ4:SV'3 //default value of nSplitter is 5 ZvT,HJ0? this("","","",5); %<a3[TQd`\ } B ;E"VS0 9X=<uS `y^\c#k public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) amC)t8L? { Xb>SA|6[| sSiteURL= sURL; H1B%}G*Ir- sFilePath = sPath; T1.U (:: sFileName = sName; Q2r[^Z this.nSplitter = nSpiltter; ;*j
K! Z'y &11 r(uo-/7z } oxN5:) La9}JvQoX [BJzZ>cY public String getSSiteURL() y$]<m+1 { /7Pqy2sgE return sSiteURL; xatq } d4 \ 6',Hs zQ{bMj<S public void setSSiteURL(String value) Wq<oP { 8P-ay<6 sSiteURL = value; `vAcCahM } rDbtT*vN JG'%HJ"D i]?
Eq?k public String getSFilePath() 5;" $X 1{ { h+j^VsP zB return sFilePath; z{\tn.67 } `14@dk
}BI6dZ~2A y,|2hrj/0E public void setSFilePath(String value) s9CmR]C { MooH`2Fd sFilePath = value; saiXFM7J } ?Ce=h+l S@u46 X> 0m*b9+q public String getSFileName() p{LbTjdNc { Q\kWQOB_ return sFileName; >zX^*T# } Q;y5E`G v/rBjUc+X dt"/4wCO public void setSFileName(String value) \L~^c1s3r { v9*+@ sFileName = value; 8CUtY9. } :2S?|7U4 L+%kibnY' Os$E,4,py public int getNSplitter() upaP,ik}~ { V.*M;T\i return nSplitter; *1kFy_Gx } aH uMm& qKd ="PR} *`u|1}h| public void setNSplitter(int nCount) iw/~t { a'jUM+D; nSplitter = nCount; TY %zw6 #p } P}5bSQ( a3 } 1 mJUlx Z8bg5% I]W7FZ=o /* 7afG4
(<k **Utility.java U?f-/@fc */ 83R s1}* package NetFox; H i8V=+ <#?dPDMG.* Cfmd*, public class Utility { dGOFSH tmS2%1o iu8Q &Us0P public Utility() 96~y\X@x { 2?q>yL! Gz gdTW
~b
]R)wBug } ZwsQ}5 `9[n5-t //线程睡眠 W7uX public static void sleep(int nSecond) 5U7,,oyh { :stHc,
try{ .W~XX Thread.sleep(nSecond); Ro9:kEG$ } 6Y]P7j catch(Exception e) ,.ivdg(/ { oOND]> e.printStackTrace (); "y"oV[` } &Hp*A^M } (c)/&~aE & tT6.@kH //日志 `WL3aI": public static void log(String sMsg) ~$K{E[^< { DL4`j>2Ov System.err.println(sMsg); BuRsz6n } ])F+ C/Px1 B7'#8heDh $%bd`d*S public static void log(int sMsg) F*J1w|)F0 { DVhBZ!u9 System.err.println(sMsg); q&>fKS nKs } 1O0. CC,p } G) KI{D hmkb!) ZKEoU! /* U"8Hw@ **TestMethod.java #2%V */ W|fE]RY package NetFox; h.#:7d(g 8Snv, Lb`^ lq_UCCnv5 public class TestMethod { C=o-3w
,i}EGW,9q M| Gl&
public TestMethod() hR|xUp
{ ///xx/weblogic60b2_win.exe ._tEDY/1m try{ ;303fS SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); cS YCMQ1ro //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); kB CU+FC SiteFileFetch fileFetch = new SiteFileFetch(bean); -JEPh!oTt fileFetch.start(); \K\eq>@6 } R7(XDX=[s catch(Exception e){e.printStackTrace ();} 7Ji'7$ ${z#{c1 MMKN^a"GA } V1M|p! `=hCS0F *GXPN0^Qjo public static void main(String[] args) Axb=1_-- { ]QJ5JtD- new TestMethod(); 7c(j1:Ku- } ',`Qx{tQ) } aE)1LP 点击下载更多相关资料
|