-
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
|
/* ijT^gsLL **SiteFileFetch.java $xwF;:) */ FL}8h/ package NetFox; @bE?WXY import java.io.*; zj}efv<e import java.net.*; w}0PtzOe Z!6G(zz:> `8*$$JC public class SiteFileFetch extends Thread { ^^mi@&ApLD _TiF}b!hi Ei!z? sxzx SiteInfoBean siteInfoBean = null; //文件信息Bean uDUSR+E> long[] nStartPos; //开始位置 B$n\m854 long[] nEndPos; //结束位置 dWEx55>,1 FileSplitterFetch[] fileSplitterFetch; //子线程对象 Ro69woU long nFileLength; //文件长度 -R]S)Odml boolean bFirst = true; //是否第一次取文件 "^%Il boolean bStop = false; //停止标志 p^3d1H3 File tmpFile; //文件下载的临时信息 5^i ^? DataOutputStream output; //输出到文件的输出流 _;+&'=6.[ :I8t}Wg //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 1,,: 4*) public SiteFileFetch(SiteInfoBean bean) throws IOException ~M=`f{-$K { q9>w3
< siteInfoBean = bean; {w(N9Va,( //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ^|2qD:
; tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); W*#/@/5 if(tmpFile.exists ()) w\a#Bfcv { {0~ p" %* bFirst = false; _,QUH" read_nPos(); /fEXAk } j(hC't- else UKdzJEhG { GWsFW[T?~ nStartPos = new long[bean.getNSplitter()]; `,z{7 0 nEndPos = new long[bean.getNSplitter()]; B:SRHd{*Wu } *&km5@* Sr0mA M Smo'&x tVwN92*J } K, Vl.-4? p_D)=Ef|& od>.5{o public void run() )ALcmC?!# { L!RLw4
//获得文件长度 r0,}f\ //分割文件 F$v
G=3 //实例FileSplitterFetch m"5gzH //启动FileSplitterFetch线程 +VDB\n //等待子线程返回 8dNJZoV try{ |gNOv;l if(bFirst) `CB TZG09 { }T@AoIR0t nFileLength = getFileSize(); x
:s-\>RcA if(nFileLength == -1) 3zkq'lZ { d4U_Wu& System.err.println("File Length is not known!"); aE}u5L$# } \_oHuw else if(nFileLength == -2) =:lacK(0 { <cS1}" System.err.println("File is not access!"); oz QL2 } )DW;Gc else S!uyplYKF { ]`x~v4JU for(int i=0;i<nStartPos.length;i++) _XN sDW4| { E;SFf nStartPos = (long)(i*(nFileLength/nStartPos.length)); _[V
6s#Wk3 }
zcc]5> for(int i=0;i<nEndPos.length-1;i++) [Fe5a { U3>G9g>^B nEndPos = nStartPos[i+1]; >dO^pDSs } Ag-*DH0 nEndPos[nEndPos.length-1] = nFileLength; BQ(`MM@ } (,k=mF } ?V+=uTCq q>?oV(sF :'03*A_[ //启动子线程 cVU[>gkg_ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; M~v{\!S for(int i=0;i<nStartPos.length;i++) d] {^ { X#fI$9a fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Cs< d\"+ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), $Khc?v nStartPos,nEndPos,i); 5u8 YHv Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); hhpH)Bi= fileSplitterFetch.start(); FRr<K^M } +aMPwTF:3 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 3j6$!89' siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); z;LntQZp- // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 4IVCTz[ nEndPos = " + nFileLength); N9hBGa$ // fileSplitterFetch[nPos.length-1].start(); SI\zW[IL 9
HuE'(wQ MQAb8 K:e //等待子线程结束 9ItsK //int count = 0; ^#Shs^#
//是否结束while循环 tkA '_dcIC boolean breakWhile = false; :jA~zHO a"}?{ W,vb7v' while(!bStop) r'j*f"uAm { /D
eU`rj write_nPos(); $?7}4u, Utility.sleep(500); \
FA7 +Q breakWhile = true;
*v6'I-# [b`k\~N4r yZKj>P1 for(int i=0;i<nStartPos.length;i++) 6+>q1,< { Gk<h_1WWK if(!fileSplitterFetch.bDownOver) >zhbOkR9c { ke/QFN-` breakWhile = false; 9G&l{7 = break; <)&;9C } <~]s+"oVc } 3]T2Zp&; if(breakWhile) SOd(& > break; hD"Tjd` P P*_Q 8I)Y y'{0|Xj //count++; I-^Y$6- //if(count>4) ;s{rJG{inG // siteStop(); P66>w})@ } +<I>]J2 1^vN?#Kt Rgg(rF=K6 System.err.println("文件下载结束!"); 74>.E^/x } ' y1=Z catch(Exception e){e.printStackTrace ();} \S
_ycn } (@]{=q< zXB.)4T 3(X"IoNQ //获得文件长度 lbMb public long getFileSize() ">|fB&~A { ?me0J3u_ int nFileLength = -1; Bc$t`PI try{ +Bgy@.a? URL url = new URL(siteInfoBean.getSSiteURL()); w18kTa!4@ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); zbrDDkZ1 httpConnection.setRequestProperty("User-Agent","NetFox"); 0 }
uH Y*0mC "n} ,_HVPE int responseCode=httpConnection.getResponseCode(); -B'<*Y if(responseCode>=400) sdrALl;w| { &W*9'vSm. processErrorCode(responseCode); 7aS`SF return -2; //-2 represent access is error yqZKn=1: } RCKb5p9 oJEind>8O Ft'?43J String sHeader; D >$9( jCkYzQUPz THC34u] for(int i=1;;i++) w!7Hl9BW { ZJ1% //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); !A qSG- //Utility.log(in.readLine()); R]H/Jv\' sHeader=httpConnection.getHeaderFieldKey(i); }9=VhC%J if(sHeader!=null) z^bv)u { *Mk5*_
if(sHeader.equals("Content-Length")) NvY%sx, { mGb,oj7l nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); (V5_q,2 break; D}OvD |<- } 63 F@Ft } rxJmK$qd else l!5fuB8 break; I'm.+(1m, } WZ>
} } {94qsVxQZ catch(IOException e){e.printStackTrace ();} O8qA2@, catch(Exception e){e.printStackTrace ();} eh`n?C /SO
4O|b ,ir(~g+{g Utility.log(nFileLength); c"~+Y2]tL J4EQhuQ Bu$Z+o return nFileLength; ?hHVawt } {oOzXc6o hV_bm@f/y %|Sh|\6A! //保存下载信息(文件指针位置) lcO;3CrJ! private void write_nPos() k <SFl { 8cI<~|4_ try{ A%(t' z output = new DataOutputStream(new FileOutputStream(tmpFile)); &?59{B.mD output.writeInt(nStartPos.length); :(ni/,~Q for(int i=0;i<nStartPos.length;i++) TL'^@Y7X5 { g$+ $@~ // output.writeLong(nPos); |1!RvW:[! output.writeLong(fileSplitterFetch.nStartPos); [TRHcz n output.writeLong(fileSplitterFetch.nEndPos); |L wn<y } ?>
)(;Ir9 output.close(); u)J&3Ah% } GI']&{ catch(IOException e){e.printStackTrace ();} v"-@'qN' catch(Exception e){e.printStackTrace ();} d|I?%LX0p } kzozjh%`9h iW oe |T3F:],` //读取保存的下载信息(文件指针位置) m%7T ~ private void read_nPos() I8M^]+c { *7cc4 wGQ try{ K FM x(fD DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); w\SfzJN int nCount = input.readInt(); x`9IQQ nStartPos = new long[nCount]; 0q}k"(9 nEndPos = new long[nCount]; GE?M. '!{{ for(int i=0;i<nStartPos.length;i++) 6)5Akyz4V { A}"aH nStartPos = input.readLong(); fRlO.!0( nEndPos = input.readLong(); jxeZ,w o } *e/8uFX input.close(); |&wwH&<[z } {_[\k^98> catch(IOException e){e.printStackTrace ();} 'Sk-L
5 catch(Exception e){e.printStackTrace ();} z"D'rHxy } Lgr(j60s ;fiH=_{us 9IfeaoZZ4q private void processErrorCode(int nErrorCode) so=Ux2 { KcPI,.4{ System.err.println("Error Code : " + nErrorCode); ny++U;qi } a]NH >d Ga,+ 2d:IYCl4q //停止文件下载 V
d`}F0WD public void siteStop() Z2@_F7cXt { D05JQ* bStop = true; ;cpQ[+$nKp for(int i=0;i<nStartPos.length;i++) _98
%?0 fileSplitterFetch.splitterStop(); +T!7jC(O
Q ZlEQzL~ _4^#VD#f } a I^Z0[P+ } R-[t4BHn //负责部分文件的抓取 L@VIC|~E **FileSplitterFetch.java X7."hGu@ */ @vHj>N package NetFox;
Fm-D>PR p#A{.6Pa: OUM^u* import java.io.*; MqKf'6z import java.net.*; D2N<a= # N Ftmus T#OrsJdu public class FileSplitterFetch extends Thread { <4Ev3z*;Z `514HgR OK8|w]-A String sURL; //File URL =hAH6C long nStartPos; //File Snippet Start Position fY|P+{BO2 long nEndPos; //File Snippet End Position )y#~eYn int nThreadID; //Thread's ID mu$0x) boolean bDownOver = false; //Downing is over =]F;{x boolean bStop = false; //Stop identical D:Rr|m0Tk FileAccessI fileAccessI = null; //File Access interface Z) qts= sQl`0|VH Yt3+o< public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 1ZZ}ojq { }}s.0Q this.sURL = sURL; oEJYAKN this.nStartPos = nStart; &\p=s.y?j this.nEndPos = nEnd; D #Ku5~j nThreadID = id; Ew, 1*WK! fileAccessI = new FileAccessI(sName,nStartPos);//定位 6C@W6DR3N } $-*E "o{o9.w yH<a;@C public void run() 4+1aW BJ2 { X6Wj,a while(nStartPos < nEndPos && !bStop) 0r/pZ3/ { kklM"Av ^.?5!9U
qPH=2k,H try{ P-Up v6J3 URL url = new URL(sURL); b~Q8&z2 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); qZ=%ru httpConnection.setRequestProperty("User-Agent","NetFox"); 2N/4. String sProperty = "bytes="+nStartPos+"-"; Z]^Ooy[pb httpConnection.setRequestProperty("RANGE",sProperty); <$+Cd=71\ Utility.log(sProperty); ,GVD.whUl ZvVrbj& JlMD_p A InputStream input = httpConnection.getInputStream(); -F338J+J24 //logResponseHead(httpConnection); OL0W'C9oA ibj3i7G? L`6 R byte[] b = new byte[1024]; #)7THx/= int nRead; z4B-fS] while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) vj#Y /B { 0Z,a3)jcc nStartPos += fileAccessI.write(b,0,nRead); 7Z7e}|
\W //if(nThreadID == 1) vw5f|Q92 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); l =`?Im } t gpg &ZR} Z7E*= V'Z Z4og Utility.log("Thread " + nThreadID + " is over!"); uW{;@ 7N bDownOver = true; 9\J6G8b>|I //nPos = fileAccessI.write (b,0,nRead); @o/126(k } L0QF(:F5 catch(Exception e){e.printStackTrace ();} _X/`7!f } 7FBaN7l } rAwuWM@BIg :GBM`f@ m]"13E0*x //打印回应的头信息 }j\_XaB public void logResponseHead(HttpURLConnection con) y}
W-OLE { jwQ(E for(int i=1;;i++) sc)}r_|g { E(p*B8d String header=con.getHeaderFieldKey(i); qh)10*FB if(header!=null) sk>E(Myo //responseHeaders.put(header,httpConnection.getHeaderField(header)); +[_mSt Utility.log(header+" : "+con.getHeaderField(header)); PgMU|O7To else &CcUr#|
break; s%OPoRE } D.;iz>_}Y } RASPOc/] \.l8]LH ?BA~$|lfxu public void splitterStop() c7R<5f { H5J1j*P<d bStop = true; HA# 9y;\ } kS)azV 0*{2^\ *rH#k? } |9*8u>|RC o1^Rx5 $AyE6j_1gX /* b>]MZhLJe **FileAccess.java K@R *
V *//文件访问(定位,写) G.l
~!; package NetFox; *%p`Jk-U import java.io.*; H7Y :l0b 0~( f<: X1Vj"4'wT public class FileAccessI implements Serializable{ P+2@,?9# Mq,2S //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 57~/QEdy RandomAccessFile oSavedFile; 'OjsV$_ long nPos; )wdTs>W7 2b89th E Z+L' public FileAccessI() throws IOException 5N
/NUs
{ )z
Hib;O this("",0); K
Ml>~r } 29tih{xx 6(=>!+xpRr -?}Z0e(w public FileAccessI(String sName,long nPos) throws IOException &cuDGo. { ww#]i&6 oSavedFile = new RandomAccessFile(sName,"rw"); H$44,8,m this.nPos = nPos; SpJIEw oSavedFile.seek(nPos); gT0N\oU" } EZb_8<DH efUa[XO {,Z-GJ public synchronized int write(byte[] b,int nStart,int nLen) @{LD_>R { NR9=V int n = -1; l)K8.(2 try{ Ef2i#BoZ oSavedFile.write(b,nStart,nLen); @F/yc n = nLen; mK_2VZj& } :ND e<6?u catch(IOException e) dK d"2+fH { kPvR , e.printStackTrace (); J<h!H } /c|X:F!;X# RTQtXv6mD 5!jU i9 return n; 3Q:Hzq G } O;8 3A !HCuae3_ =tQ^t4_ } 0/TP`3$X#" D4IP$pAD 1G`zwfmh~ /* }[mLtv%& **SiteInfoBean.java b2Oj 1dP1 */ Zp qb0ro package NetFox; S17 c#6vT ^_5t5> PW QRy public class SiteInfoBean { MiN|u C.N#y`g LCMZw6p private String sSiteURL; //Site's URL <Gw>}/-^ private String sFilePath; //Saved File's Path reI4!,x private String sFileName; //Saved File's Name .9VhDrCK private int nSplitter; //Count of Splited Downloading File k^Qd%;bdF '4e,
e|r Boj#r ,x public SiteInfoBean() >hv8zHOO: {//nSplitter的缺省值为5 ?)V|L~/ //default value of nSplitter is 5 M'5PPBSR this("","","",5); 6.6;oa4j } CAbR+y vp&N)t_ mbZn[D_zi public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) (U([T -H { Lc! t sSiteURL= sURL; o>75s#=
b= sFilePath = sPath; M.u1SB0 sFileName = sName; b-?d(- this.nSplitter = nSpiltter; ~jD~_JGp GWW#\0*Bn a%*W(
4=Y } vf0
fa46 BG^)?_69 +.
tcEbFL public String getSSiteURL() oZ\zi> Y, { ]Wg&r Y0 return sSiteURL; z*e`2n#\ } ,{Ga7rH*
vWVQ8S. M~l\rg8 public void setSSiteURL(String value) 0WQd#l { 7 0Wy]8<P sSiteURL = value; ?%ei+ } Y.KJP ? h pKrP <V1y^EW0 public String getSFilePath() yF@72tK { %(A@=0r# return sFilePath; Ti>2N } -GODM128 ^ ~9Cw5rwH<; 99*QfC public void setSFilePath(String value) >=K~*$&> { (Qd@Q,@(s sFilePath = value; 4Ul*`/d } ~tZy-1 t*wV<b n'9&q]GN| public String getSFileName() M,sZ8eeq { \2[sUY<W return sFileName; Vo(>K34 } (nAg
~i >A>_UT_" ODCv^4}9 public void setSFileName(String value) lS |:4U. { Z+agS8e( sFileName = value; icN#8\E } R47tg&k6[ y\XWg`X
y 48LzI@H& public int getNSplitter() u85?f { f"Kl?IN8 return nSplitter; mk[<=k~ } ~F13}is jygKw+C H+npe'm_Z public void setNSplitter(int nCount) 8I<LZ{a10 { %
|G"ZPO? nSplitter = nCount;
LX</xI08W } JlE b } Xu& v3Y~k qJK-HF:# N**"u"CX /* j$Vtd& **Utility.java >K*TgG6!X */ rnQ9uNAu package NetFox; ,
%A2wV )F m'i&F_ } QpyU% public class Utility { 3Gt@Fo= #C+7~ns' rq|>z . public Utility() V PI_pK { 3Y=uBl (d# W3 qbKcI+)47 } YJ{_%z|U q],/%W //线程睡眠 # 66vkf* public static void sleep(int nSecond) 4IXa[xAm { NT<}-^ try{ i+~H~k}"X Thread.sleep(nSecond); [='<K } F32U;fp3 catch(Exception e) }u.1$Y { A?H.EZ e.printStackTrace (); %:Y'+!bX } W <M\b# } qhOV>j,d v7mg8' //日志 uZ+vYF^ public static void log(String sMsg) BV
eIj } { gPF5|% 3) System.err.println(sMsg); hEAP,)>F } YLid2aF -9yWf8; PY[!H<tt public static void log(int sMsg) Vc&xXtm[v { D`NQEt"( System.err.println(sMsg); c1h?aP } p1fy)K2{,j } a3^ ({;k!0 .1h1J Jqqt@5Ni /* g&O!w!T
**TestMethod.java +A<7:`sO */ p"QV| ` package NetFox; 2qPQ3-' p/Ri|FD6 M][Zu[\* public class TestMethod { GL3olKnL ..yLtqos 5 0< public TestMethod() !KLY*bt6 { ///xx/weblogic60b2_win.exe H~~>ut6` try{ B^BbA-I SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); AUPTtc`#Y //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 5<Y-?23 SiteFileFetch fileFetch = new SiteFileFetch(bean); E7j9A` fileFetch.start(); !\|L(Paf } ;\gHFG} catch(Exception e){e.printStackTrace ();} MJG)fFl]O nj7\vIR7 jT:kk } ]`\~(*;[W9 WxS$yUu
;"+]bne~ public static void main(String[] args) @mu=7_$U { V,>uM
>$ new TestMethod(); ,{g B$8z^ } ;(;{~1~ } pF'M 点击下载更多相关资料
|