-
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
|
/* ~RGZY/4 **SiteFileFetch.java Blv!%es */ Z
|wM package NetFox; SJ$N]<d import java.io.*; _X5@%/Vz import java.net.*; 9fp@d 2]W"sT[ qd\5S*Z1 public class SiteFileFetch extends Thread { Cj^:8 ?% )vVt{g Ln/6]CMl SiteInfoBean siteInfoBean = null; //文件信息Bean l`D^)~o8 long[] nStartPos; //开始位置 ."9t<<! long[] nEndPos; //结束位置 s6Ox!)& FileSplitterFetch[] fileSplitterFetch; //子线程对象 Zo`Ku+RL2' long nFileLength; //文件长度 JRQ{Q"`) boolean bFirst = true; //是否第一次取文件 0ant0< boolean bStop = false; //停止标志 Fr/3Qp@S File tmpFile; //文件下载的临时信息 O9y4.`a" DataOutputStream output; //输出到文件的输出流 Vp{e1xpY Khd" //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) "J:~Aa%_ public SiteFileFetch(SiteInfoBean bean) throws IOException xE%1C6~C< { $%~-p[)<(P siteInfoBean = bean; 0\3mS{s //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); nk.m Gny tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); j/"{tMqQp if(tmpFile.exists ()) U(#)[S, { eHr|U$Rpo bFirst = false; |tL57Wu93 read_nPos(); tj:3R$a } ANB@cK_ else @pq#? { .Y B}w nStartPos = new long[bean.getNSplitter()]; HsrIw nEndPos = new long[bean.getNSplitter()]; c"qaULY } jSa9UD TS0x8,'$q X"QIH|qx- 0uX"KL]Elf } R Fgy q;co53.+P) ];BGJ5^j public void run() 01v7_*'R { 4u}"ng
//获得文件长度 |GPR3%9 //分割文件 8vFt<k}G //实例FileSplitterFetch O:02LHE //启动FileSplitterFetch线程 p<>xqU //等待子线程返回 OU)~
02|\ try{ A)9[.fhx if(bFirst) 1,cd[^`. { Gok8:, nFileLength = getFileSize(); ,Qvclu8r if(nFileLength == -1) rGb7p`J { ~Ab nksR System.err.println("File Length is not known!"); biwV7< } mmk]Doy?# else if(nFileLength == -2) [Xp{ztGE { HSq.0vYl6 System.err.println("File is not access!"); [$; \1P/ } z{h#l!Edh else }1]E=!?)& { :eaqUW!Y for(int i=0;i<nStartPos.length;i++) \QF\Bh { En&bwLu:s nStartPos = (long)(i*(nFileLength/nStartPos.length)); rMDo5Z2 } Hya ";' for(int i=0;i<nEndPos.length-1;i++) 5rG&Z5 { R Wa4O# nEndPos = nStartPos[i+1]; Y|ONCc } u{%gB&nC nEndPos[nEndPos.length-1] = nFileLength; Fv!zS.)` } /8!s
C D } cG|)z<Z \BB(0Ah+t !3~VoNh, //启动子线程 +r EqE/QF fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; -[-LR }u for(int i=0;i<nStartPos.length;i++) |Ad1/>8i { Jvi"K fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), YG2rJY+* siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), L #'N nStartPos,nEndPos,i); :,.g_@wvG Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); M6n9>aW4 fileSplitterFetch.start(); $lkd9r1 } x;H#-^LxW= // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), )h(Dt(2Wm siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); }7k!>+eQ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", g@WGd(o0) nEndPos = " + nFileLength); a`}b'X: // fileSplitterFetch[nPos.length-1].start(); >FtW~J"X bkmW[w:M h&|wqna //等待子线程结束 }z/;^`` //int count = 0; 5+U2@XV //是否结束while循环 6;/>asf boolean breakWhile = false; ciKkazx. + -e8MvP tPO\ e] while(!bStop) .E!p { ESOuDD2< write_nPos(); <0[{Tn Utility.sleep(500); ]:* 8
Mb# breakWhile = true; n^QOGT.s6` k;V4%O {"33 .^= for(int i=0;i<nStartPos.length;i++) Q;O\tl { by*>w/@9)k if(!fileSplitterFetch.bDownOver) F?j;3@z[A { N*t91 X breakWhile = false; r4Ygy/% break; [BS3y`c } XQEGMaZ } LS:3Dtq if(breakWhile) t3 AZS0 break; VdpkE0 YxMOr\B Qy ;
M:q //count++; ?DVO\Cp //if(count>4) lD09(|` // siteStop(); 0x'-\)v>3 } i<D}"h| a,Gd\.D 5,:tjn System.err.println("文件下载结束!"); !O$ */7 } a!"81*&4# catch(Exception e){e.printStackTrace ();} 66\0JsT?3 } #8;|_RU {8M=[4_`l s{q)m@ //获得文件长度 Z<a6U 3 public long getFileSize() NLDmZra { A.9,p int nFileLength = -1; W>b(hVBE try{ &]~z-0`$! URL url = new URL(siteInfoBean.getSSiteURL()); }Gpw2 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); N"|^AF httpConnection.setRequestProperty("User-Agent","NetFox"); &J|3uY,'j 3j.Ft*SV &fYx0JT
int responseCode=httpConnection.getResponseCode(); b5YjhRimS if(responseCode>=400) /'1UfjW> { qF6YH processErrorCode(responseCode); b2
~~!C return -2; //-2 represent access is error fys@%PZq } 8WWRKP1V g~d}?B\<@ Egt;Bj#% String sHeader; `gqBJi 9vL`|`Vau ErF;5ec for(int i=1;;i++) _<5 o1 { <\x/Y$jm0n //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); cHK)e2r //Utility.log(in.readLine()); >HnD'y* sHeader=httpConnection.getHeaderFieldKey(i); F#_7m C if(sHeader!=null) JJ56d)37. { XF2u<sDe if(sHeader.equals("Content-Length")) q`09 { )8oI
s nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); wgSA6mQZ break; >]"5K<-1 } ~Dr/+h:^\ } c=H(*# else VL"ZC:n)- break; f+0dwlIlC$ } iR4CY- } Ze~ a+%Sb catch(IOException e){e.printStackTrace ();} 9QJ=?bIC# catch(Exception e){e.printStackTrace ();} b@N|sXt&C K&"Yv~h mLD0Lu_Ob3 Utility.log(nFileLength); zsI0Q47\ :c,\8n Rs)tf|`/ return nFileLength; =HP_IG_ } BZ1@?3 G Q&9by=} 3a#637% //保存下载信息(文件指针位置) n4)G g~PE private void write_nPos() #e&j]Q$Eh {
N`y!Km
try{ \~xsBPX+x output = new DataOutputStream(new FileOutputStream(tmpFile)); p<'mc|hGq output.writeInt(nStartPos.length); H's67E/>* for(int i=0;i<nStartPos.length;i++) -]5dD VSO { 8x'rNb // output.writeLong(nPos); D>c%5h output.writeLong(fileSplitterFetch.nStartPos); =(*Eh=Pw output.writeLong(fileSplitterFetch.nEndPos); _h_;nS.Y } 2Iz@lrO6 output.close(); yVQqz } `a:@[0r0U catch(IOException e){e.printStackTrace ();} 2U>1-p&dn catch(Exception e){e.printStackTrace ();} iUA2/ A } -9-%_=6 ZcX%:ebKS $${ebt //读取保存的下载信息(文件指针位置) %kNkDI private void read_nPos() *ok89ad { ]V]~I. try{ JU<<,0 DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ix^:qw; int nCount = input.readInt(); yqlkf$? nStartPos = new long[nCount]; u 8U>R=M nEndPos = new long[nCount]; P%pB]d.qpi for(int i=0;i<nStartPos.length;i++) gU>Y { a%ec: % nStartPos = input.readLong(); 7H[# nEndPos = input.readLong(); n5UcivyX
} (W3R3>; input.close(); 3w{4G<I } 0Qw?.#[9 catch(IOException e){e.printStackTrace ();} &4"(bZ:LO catch(Exception e){e.printStackTrace ();} Q(AOKp,F } 2b1LC!'U <3HW!7Ad1 zDa*n:S private void processErrorCode(int nErrorCode) XnWr~h{b { {FQ
dDIj# System.err.println("Error Code : " + nErrorCode); oX3Q9) } `Lm
ArW: B_`A[0H 4OCz:t //停止文件下载 LLgN%!& public void siteStop() RZ|s[bU { @z
dmB~C bStop = true; $+JaEF`8 for(int i=0;i<nStartPos.length;i++) VbBZ\`b fileSplitterFetch.splitterStop(); 5/:Zj,41{ 8 gOK?>'9 Yl8tjq}iC } 5[I> l } jSVb5P //负责部分文件的抓取 QwOQS
% **FileSplitterFetch.java 6JRee[ */ /CKkT.Le package NetFox; pl fz)x3 X~GZI*P &xH>U*c import java.io.*; f=~@e#U import java.net.*; BT d$n!'$n j(nPWEyJM +t.T+`
EG public class FileSplitterFetch extends Thread { 56?U4wj7{ gADt%K2#Z $6fHY\i#R String sURL; //File URL L=Dx$#| long nStartPos; //File Snippet Start Position MrOW&7 long nEndPos; //File Snippet End Position *i5&x/ds int nThreadID; //Thread's ID P|HY=RMa boolean bDownOver = false; //Downing is over s_`wLQ7e boolean bStop = false; //Stop identical 7jts;H= FileAccessI fileAccessI = null; //File Access interface ( }JX ]- 22tY%Y9 U0jq.]P public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException BAoqO
Xv { 5Odi\SJ& this.sURL = sURL; ODv)-J this.nStartPos = nStart; n6Q 3X
this.nEndPos = nEnd; cY\-e?`=4 nThreadID = id; s)/i_Oe$\ fileAccessI = new FileAccessI(sName,nStartPos);//定位 .vpQ3m> } n)`*{uv$ {j:{wW. zb9d{e public void run() 4D\_[(P { n=rPFpRLF while(nStartPos < nEndPos && !bStop) *%Gy-5hM { /"iYEr%_ )E6m}? H5 MlRgdVX try{ Mqw&%dz'_ URL url = new URL(sURL); \8Blq5n-O* HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); LfgR[! httpConnection.setRequestProperty("User-Agent","NetFox"); dhm; String sProperty = "bytes="+nStartPos+"-"; Q.\+
XR_| httpConnection.setRequestProperty("RANGE",sProperty); xu+wi>Y^ Utility.log(sProperty); / d6mlQS i7 p#%2 zac>tXU; InputStream input = httpConnection.getInputStream(); 9SAyU%mS: //logResponseHead(httpConnection); Pq7YJ"Z?: C8&)-v| @ULr)&9 byte[] b = new byte[1024]; Grjm9tbX} int nRead; d8]6<\g while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 6"_FjS3Sl { o`RTvGXk nStartPos += fileAccessI.write(b,0,nRead); vj{h*~ //if(nThreadID == 1) Ap}:^k5{ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); p[Q } *"9b?`E %gw0^^A NRoi`
IIj Utility.log("Thread " + nThreadID + " is over!"); {'d?vm!r bDownOver = true; .P ,\69g~A //nPos = fileAccessI.write (b,0,nRead); W4>8 } G VEjB; catch(Exception e){e.printStackTrace ();} I[[rVts } ,T&B.'cq } ?]3`WJOj \n<N>j@3 gvy%`SSW //打印回应的头信息 i$og
v2J public void logResponseHead(HttpURLConnection con) .4KXe"~E { Y=}b/[s6; for(int i=1;;i++) t}'Oh}CG { [%QJ6 String header=con.getHeaderFieldKey(i); ;! CQFJ= if(header!=null) kk!}mbA_} //responseHeaders.put(header,httpConnection.getHeaderField(header)); 2^qY,dL Utility.log(header+" : "+con.getHeaderField(header)); y'4= else Z#4? /' break; _Dk;U*2 }
ND21; } kTC6fNj[ '>`bp25> cm7aL%D$c public void splitterStop() vhhsOga { ^$x^JM ]/ bStop = true; ~@sx}u } +Do7rl
ze#LX4b I <[a9"G7 } &p4q# p7, >nl*aN !vett4C* K /* -{L[Wt{1 **FileAccess.java \>I&UFfH)4 *//文件访问(定位,写) )cOm\^,
package NetFox; 9B*SWWAj import java.io.*; 4H1s"mP< b(~NqV!i L"('gc!W public class FileAccessI implements Serializable{ gL}K84T$S LClPAbr //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 ?}lCS7& RandomAccessFile oSavedFile; ]qv/+~Qs> long nPos; AK[9fxrE ADHe![6q uMqo)J@s public FileAccessI() throws IOException jRq>Sz{8 { "=/XIM. this("",0); '-ACNgNn } dks0 J-I7K!B L'['7 public FileAccessI(String sName,long nPos) throws IOException dmE-WS { W:0@m^r oSavedFile = new RandomAccessFile(sName,"rw"); Txw,B2e)> this.nPos = nPos; M{z+=c&w oSavedFile.seek(nPos); *M KVm)Iv } {d7KJmN 0HG*KW e@X~F6nP public synchronized int write(byte[] b,int nStart,int nLen) O'5(L9, { E[_Z%zd^ int n = -1; <pPI:D@G try{ P^1rNB oSavedFile.write(b,nStart,nLen); r*,]=M W n = nLen; `CHgTkv } 1S_KX. catch(IOException e) lYy0
{ ]bS\*q0Zf( e.printStackTrace (); nC`=quM9 } }25{"R}K )EcF[aO $'[(
DwLS return n; kv5D=0r } $RF"m" L!e@T' 78NAcP~6c } "w_(p|c m= TJO|{Lxm u` /* v8wN2[fC **SiteInfoBean.java d5WE^H)E. */ I#9K/[ package NetFox; =#>P! qLPI^g, l kl#AH public class SiteInfoBean { ,cbP yg 2poU\|H _
k>j?j- private String sSiteURL; //Site's URL /?by4v73P private String sFilePath; //Saved File's Path A
7TP1 private String sFileName; //Saved File's Name 3HfT9 private int nSplitter; //Count of Splited Downloading File 2@A7i<p ;N4mR6 wV(_=LF public SiteInfoBean() n}._Nb
5 {//nSplitter的缺省值为5 9Uk9TG 5 //default value of nSplitter is 5 V#sANi?mpo this("","","",5); +/UInAM } Ya,>E@oc oTfEX4 t { %7L'2/Y2x public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) ~}TVM%0RTq { 57r\s8 sSiteURL= sURL; ?DpMR/ sFilePath = sPath; +L X&1GX sFileName = sName; ok[R`99 this.nSplitter = nSpiltter; 4#=^YuKaF1 9^jO^[> q 2=^l } oR3$A :!P= `#9ZP UkeW2l`: public String getSSiteURL() >Axe7<l { i>0bI^H return sSiteURL; XSZW9/I-(| } vbA9V<c& Be}Cj(C irrQ$N} public void setSSiteURL(String value) f)gA.Rz { sy]1Ba% sSiteURL = value; KXR }
beO*| I-+D+DhRx WxIP~ public String getSFilePath() !q$IB?8 { ~IlgcCF return sFilePath; McA, } WI~';dK2] w`i3B@w |E!xt6B public void setSFilePath(String value) a:@Eg;aN*O { 3pl.<;9r sFilePath = value; ^8We}bs-c } Z;Tjjws 4J_18.JHP h`jtmhoz public String getSFileName() ,wnF]K2D0 { Ak|jJ return sFileName; 3B;B#0g50 } |ss_< QvqX3FU v`nodI public void setSFileName(String value) T#h`BtET[ { "9R3S[ sFileName = value; tohYwXN } QDSB
<0j 2uqdx'^" F#W'>WBU public int getNSplitter() ~Edm VEu { +/AW6 return nSplitter; 80 p7+W2m } 6``!DMDt/P YZ'gd10T P^.L0T5g public void setNSplitter(int nCount) oSTGs@EK { lgre@M]mg nSplitter = nCount; ~0ZP%1.B3 } B&<Z#C:I } 8<IOX {wCQ#V ;Wb
W\,P' /* ? NVN&zD] **Utility.java pGUrYik4 */ C2bN<K package NetFox; W!+5}\? L# (o(4g2 G9^!=
v@ public class Utility { X@jml$;$ lwjg57 Jfo#IRC public Utility() *`mwm:4 { C#vU'RNpl uiO8F*,!&r q[**i[+% } XCQ=`3f LLV:E{`p //线程睡眠 <C]s\"o-` public static void sleep(int nSecond) :8\z 0 { 6fQQKM@a| try{ vvdC.4O Thread.sleep(nSecond); 7e>n{rl } r!j_KiUy catch(Exception e) ~eE2!/%9 { z l@
<X0q e.printStackTrace (); {n2jAR9nq } |)yO]pB: } f~8Xue,l" >`\~=ivrD //日志 62a{Ggs{ public static void log(String sMsg) iv:[]o { B-'Xk{ System.err.println(sMsg); t"JfqD E } qp'HRh@P2: K^?/ W
4~a`D7 public static void log(int sMsg) n:Ka@ { 29
')Y|$, System.err.println(sMsg); Lk=f^qJ
] } E*j)gj9 } n1!0KOu/N pz#oRuujY CGny#Vh /* 'I\bz;VT **TestMethod.java '+5*ajP< */ d5UdRX]* package NetFox; 9xN4\y6F 1Ep!U#Del U''/y\Z public class TestMethod { mGwBbY+5n 7WKb|
/#; dI{)^ public TestMethod() K'Bq@6@C g { ///xx/weblogic60b2_win.exe h@@2vs2 try{ D3|y|Dr SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); @e3O=_m- //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 8v5cQ5Lc SiteFileFetch fileFetch = new SiteFileFetch(bean); ##EMJi fileFetch.start(); [f&ja[m q } ~UEft catch(Exception e){e.printStackTrace ();} ^4h/6^b0c <jY"+@rF bK<'J=#1 } Mb"i}Yt{ J*5 )g m ['UV2 public static void main(String[] args) \Om.pOz { yiWBIJ2Wu9 new TestMethod(); r`HtN{6r } $0+AR) } {D 9m//x 点击下载更多相关资料
|