-
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
|
/* y%y#Pb| **SiteFileFetch.java N!3f1d7RQ */ Cu:-< package NetFox; G#C)]4[n import java.io.*; s'^#[%EgB import java.net.*; -d~'tti Sq'z<}o T_dd7Ym'8 public class SiteFileFetch extends Thread { (qrT0D6 zkOgL9
(_8 ^s*} 0 SiteInfoBean siteInfoBean = null; //文件信息Bean (!(bysi9 long[] nStartPos; //开始位置 ]gW J, long[] nEndPos; //结束位置 >seB["C FileSplitterFetch[] fileSplitterFetch; //子线程对象 ;a`X|N9 long nFileLength; //文件长度 1DP)6{x boolean bFirst = true; //是否第一次取文件 qr9F boolean bStop = false; //停止标志 ;~J~g# File tmpFile; //文件下载的临时信息 5dk,!Cjg DataOutputStream output; //输出到文件的输出流 Ah`dt8t [1U_c*;i //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) G;;~xfE' public SiteFileFetch(SiteInfoBean bean) throws IOException _;{-w%Vf { Ln|${c siteInfoBean = bean; 2'U9!.o //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); M)7enp) F. tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info");
_1'Pb/1 if(tmpFile.exists ()) F?kVW[h?q { h~p}08 bFirst = false; s|T7)PgR read_nPos(); F{,O+\ } I\~V0<"jI else *zWn4BckN { 'r%oOZk)z nStartPos = new long[bean.getNSplitter()]; jxaoQeac nEndPos = new long[bean.getNSplitter()]; v2{s2kB= } |Y11sDa9h ]r6bJ2 Bl];^W^P 6pR#z@, } aw1J#5j`n M'iKk[Hjfx X;:xGZ-oY public void run() +kL(lBv' { dk/*%a
+ //获得文件长度 N}G(pq} //分割文件 1`{ib
//实例FileSplitterFetch G65N: //启动FileSplitterFetch线程 D$E9%'ir //等待子线程返回 `t&;Yk]-L try{ C5UDez if(bFirst) _4$DnQ6& { (?y2@I} nFileLength = getFileSize(); IcQ!A=lB if(nFileLength == -1) 5QJL0fc {
h$\hPLx System.err.println("File Length is not known!"); rgKn=8+a } w>_EM&r6~u else if(nFileLength == -2) `F 8;{`a { &NeYKh? System.err.println("File is not access!"); P*Sip?tdE } D:tZiS=0 else {1|7N
GQ { V JL;+ for(int i=0;i<nStartPos.length;i++) /8\&f%E { `r(J6,O nStartPos = (long)(i*(nFileLength/nStartPos.length)); oH0F9*+W } d/rz0L for(int i=0;i<nEndPos.length-1;i++) 6 JYOe { D
;$+] 2 nEndPos = nStartPos[i+1]; O/oYaAlFF@ } '<S:|$$ nEndPos[nEndPos.length-1] = nFileLength; v=1S } iGVb.=) } ^l&4UnLlc VQMd[/ ]},Q`n>$ //启动子线程 [Vp2!" fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; <L/vNP for(int i=0;i<nStartPos.length;i++) p+UHJ& { M`pTT5r fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), .+L_!A siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 4Olv8nOe< nStartPos,nEndPos,i); .
]o3A8 Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ioC@n8_[G fileSplitterFetch.start(); ~Na=+}.q_ } a
-xW 8 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), "t[M'[ `C siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); On{~St'V // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", lQV|U;~D nEndPos = " + nFileLength); _ yfdj[Ot` // fileSplitterFetch[nPos.length-1].start(); X5uS>V%/ ] vC=.&] |Z`M*.d+ //等待子线程结束 V I6\ //int count = 0; a'@-"qk //是否结束while循环 $uEJn&n7} boolean breakWhile = false; Xw7{R PUbaS{J7 H-eEhI(;O while(!bStop) 7"ylN"syZ { uy/y wm/?= write_nPos(); AIuMX4nb Utility.sleep(500); -"W )|oC_ breakWhile = true; :8p&#M BRQ"A, R<f#r0 3@| for(int i=0;i<nStartPos.length;i++) (wife#)~ { I-,>DLG if(!fileSplitterFetch.bDownOver) A^-iHm { `aIG;@Z breakWhile = false; /J;;|X#P break; {B3(HiC } H"_v+N5= } KGu= ; if(breakWhile) Vc| NL^ break; *%X.ym' T8U[xu.>
=^Th[B //count++; q-YL]PgV //if(count>4) x@Y|v@}BE // siteStop(); Rb#/qkk/ } pw=F' Y@N
hcyn
}wfI4?}j} System.err.println("文件下载结束!"); ^p,3)$ } 2 l(Dee Y catch(Exception e){e.printStackTrace ();} Xtkw Z3 } 8)pB_en3sO L?HF'5o ~
7}] //获得文件长度 ilv _D~|
public long getFileSize() >Fyu@u { zrrz<dW int nFileLength = -1; :9`qogF> try{ 4`s)ue URL url = new URL(siteInfoBean.getSSiteURL()); `y2ljIWJ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); -bA!PeI httpConnection.setRequestProperty("User-Agent","NetFox"); M"(6&M=? Dx3 %KS JNBT^=x int responseCode=httpConnection.getResponseCode(); R hio7C if(responseCode>=400) ~^7r?<aKc { JYV\oV{ processErrorCode(responseCode); wAh# return -2; //-2 represent access is error zQc"bcif5( } k 4B_W OQFi.8 a5?A!k\2 String sHeader; B{aU;{1 W-XpJ\_ ffk4mhH for(int i=1;;i++) wyw <jH { tS<h8g_ //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); XWtiwf'K //Utility.log(in.readLine()); nU17L6'$ sHeader=httpConnection.getHeaderFieldKey(i); PN
&|8_ if(sHeader!=null) azX`oU,l { )%VCzye*{ if(sHeader.equals("Content-Length")) GV8)Kor% { kA^A mfba nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); a,n93-m(m break; gz61FW } 5B*qbM } $.:3$et@/ else sPCMckt break; y5u\j{?Te } )gXTRkmw } _~A~+S} catch(IOException e){e.printStackTrace ();} DYRE1! catch(Exception e){e.printStackTrace ();} %F J#uQXZ ~`R1sSr" G{o+R]Us Utility.log(nFileLength); z+/LS5$ }OrYpZob /DO'IHC.o return nFileLength; UX_I6_& } zfjw;sUX ?"j@;/= 9":2"<'+ //保存下载信息(文件指针位置) LgHJo-+> private void write_nPos() .pvxh|V { <xlm
K( try{ Mm#[&j[Y output = new DataOutputStream(new FileOutputStream(tmpFile)); gs`> C( output.writeInt(nStartPos.length); [5Y<7DS for(int i=0;i<nStartPos.length;i++) <&U!N'CE { (WE,dY+. // output.writeLong(nPos); }-p,iTm output.writeLong(fileSplitterFetch.nStartPos);
zu<3^=3 output.writeLong(fileSplitterFetch.nEndPos); @^?XaU } YwAnqAg output.close(); kon=il<@ } Ei~f`{i catch(IOException e){e.printStackTrace ();} QlD6i-a catch(Exception e){e.printStackTrace ();} ~lw<799F6 } U9#WN.noG 5AOfp2O #C\4/g?=, //读取保存的下载信息(文件指针位置) Jqru AW< private void read_nPos() >Z\BfH { ]a/'6GbR try{ GZ8:e3ri DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); xo
WT*f int nCount = input.readInt(); a+?~;.i~ nStartPos = new long[nCount]; 'm O2t~n nEndPos = new long[nCount];
Oh`2tc- for(int i=0;i<nStartPos.length;i++) (X}@^]lpa { T~s}N x# nStartPos = input.readLong(); yVS\Q,:J9 nEndPos = input.readLong(); sKfXg`0 } wFL3&* input.close(); 84M3c } 70Ka! catch(IOException e){e.printStackTrace ();} 3ATjsOL catch(Exception e){e.printStackTrace ();} `|<+ ? } (~()RkT Vk7=7%xW <4mQ*6 private void processErrorCode(int nErrorCode) g:gB`8w? { ^\wl2 System.err.println("Error Code : " + nErrorCode); inF6M8
A1 } n}J^6:1 SxMj,u%X/ o6|-=FcvC //停止文件下载 0H:dv:#WAI public void siteStop() HXks_ix ) { R]QpMj%o bStop = true; C5n?0I9 for(int i=0;i<nStartPos.length;i++) 5I,$EGG fileSplitterFetch.splitterStop(); Ze
?
g s[c^"@HT eb!_ie"D } ^l !L)iw } CV^c",b_ //负责部分文件的抓取 `="v>qN2\ **FileSplitterFetch.java 7GZq|M_:y */ Z2p> n`D package NetFox; +t]Xj1Q
yP\Up ("Dv>&w9 import java.io.*; ZBc|438[ import java.net.*; 8D~x\!(p\ rt b* n~ k
dU!
kj public class FileSplitterFetch extends Thread { @]'SeiNp g%\L&}Jd qm(1:iK,0 String sURL; //File URL 1^{`lK~2 long nStartPos; //File Snippet Start Position \*"`L3 long nEndPos; //File Snippet End Position km\%BD~ int nThreadID; //Thread's ID nNn56&N] boolean bDownOver = false; //Downing is over fk3kbdI boolean bStop = false; //Stop identical 8/Rm!.8+~ FileAccessI fileAccessI = null; //File Access interface c8DZJSO `ROEV~ Dip*}8$o(w public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException $a.u05 { n33kb/q* this.sURL = sURL; U9ZbVjqv@ this.nStartPos = nStart; a8s4T$ this.nEndPos = nEnd; b!a
%YLL nThreadID = id; >oqZ !V5[ fileAccessI = new FileAccessI(sName,nStartPos);//定位 |9,UaA } Z> 74.r p`>d7S>" QN
G& public void run() I/s.xk_i { J22r v( while(nStartPos < nEndPos && !bStop) '29WscU { ;$!I&<) aWaw&u Rd! 2\| try{ b5 Q NEi URL url = new URL(sURL); Tsz
NlRxc HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); jA`a/vWu httpConnection.setRequestProperty("User-Agent","NetFox"); W_<4WG String sProperty = "bytes="+nStartPos+"-"; iBvOJs httpConnection.setRequestProperty("RANGE",sProperty); ty-
r& Utility.log(sProperty); y/R+$h(% j Z'&0x"U - L~Uu^o InputStream input = httpConnection.getInputStream(); 0HbJKix! //logResponseHead(httpConnection); <abKiXA" -p8e "!q?P"
@C byte[] b = new byte[1024]; bK=c@GXS int nRead; PDC]wZd/ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) -g~~] K% { %f!iHo+Z nStartPos += fileAccessI.write(b,0,nRead); 7~vqf3ON4J //if(nThreadID == 1) XO
wiHW{ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); V0NVGRQ } 1xTTJyoq YIOR$ gX*K&*q Utility.log("Thread " + nThreadID + " is over!"); gaeOgP.0 bDownOver = true; J}@GKNm //nPos = fileAccessI.write (b,0,nRead); %h+uD^^$ } +X^4;
& catch(Exception e){e.printStackTrace ();} MY F#A } LK+felL } _A-V@%3 6%?A>
{tt$w>X //打印回应的头信息 ~ hm`uP public void logResponseHead(HttpURLConnection con) `P.CNYR<J { &r@H(}$1\ for(int i=1;;i++) ,F:=(21 { (~#G'Hd String header=con.getHeaderFieldKey(i); }1m_o@{3P if(header!=null) "{(
[! //responseHeaders.put(header,httpConnection.getHeaderField(header)); ( V4G<-jG Utility.log(header+" : "+con.getHeaderField(header)); O5-;I,)H else x!?Z*v@I break; M 9"-WIG@h } 2Xgx*'t\ } D[~}uZ4\ q^Inb)FeN ]{Ek[Av public void splitterStop() xIgql}. { =|0/Ynfe bStop = true; l0`'5> } dS$ji#+d$ fn1pa@P G(\Ckf: } RgGA$HN/ p
>aw 'v`_Ii|- /* Yy@g9mi **FileAccess.java `Zf9$K| *//文件访问(定位,写) BKA]G)G7u! package NetFox; XGIpUz import java.io.*; wLMvC{5 bi,mM,N/ an KuTI public class FileAccessI implements Serializable{ q6&67u0 -eL'KO5' //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 /f&By
p RandomAccessFile oSavedFile; b *9-}g: long nPos; `a'`$'j a#QByP )ddsyFGW public FileAccessI() throws IOException P6we(I`"2 { +*a7GttU this("",0); IJIQ"
s } S'@=3) ND*]gM BD'NuI public FileAccessI(String sName,long nPos) throws IOException xt))]aH { kY!C_kFcn oSavedFile = new RandomAccessFile(sName,"rw"); i4VK{G~g" this.nPos = nPos; $e1:Q#den2 oSavedFile.seek(nPos); V6+Zh>'S } %MuaW(I o 3{pk5_c x@Vt[}e public synchronized int write(byte[] b,int nStart,int nLen) (UcFNeo { tgW kX int n = -1; /e<5Np\X try{ fq(5Lfe} oSavedFile.write(b,nStart,nLen); (H-cDsh;c n = nLen; 9K$]h2 } 8^T2^gs catch(IOException e) UoRDeYQ`E { 8t\}c6/3" e.printStackTrace (); Ky6+~> } 6eo4#/+% H:Lt$ r=0j7^B# return n; ,D8&q?a } GLcd9|H ~me\ e>!E=J)j } kjX7- ZPY b[0S=e
G zn^ v!:[ /* 9A<0zt **SiteInfoBean.java xFX&9^Uk */ [' t8C package NetFox; 6KB^w0oA [Q:f-<nH to51hjV public class SiteInfoBean { 3W'FcE)|E o}W;Co ',# private String sSiteURL; //Site's URL e&ts\0 private String sFilePath; //Saved File's Path yDuq6`R* private String sFileName; //Saved File's Name CPGL!: private int nSplitter; //Count of Splited Downloading File z \^ Se/ss!If N-Z^G<[q. public SiteInfoBean() `fMpV8vv {//nSplitter的缺省值为5 _G[6+g5| //default value of nSplitter is 5 `~h0?g this("","","",5); ;L$,gn5H }
d.I%k1`( g41<8^( #@q1Ko!NZ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 1~L\s}|2d { 5f{wJb2 sSiteURL= sURL; [x|)}P7%s sFilePath = sPath; ~.H~XKw sFileName = sName; *F..ZS'$[ this.nSplitter = nSpiltter; 7P
c(<Ui+ gtMw3D`FL 4`6< { } ExqM1&zpK dXDXRY.FMQ 6qf-Y!D5 public String getSSiteURL() =tHD 4I { yH+c#w return sSiteURL; }EP|Mb } I<KCt2:X ovSH}h! "G@E6{/ public void setSSiteURL(String value) 'rvE { w#rVSSXQ3 sSiteURL = value; :U8k|,~f } }Wqtip:L D>S8$]^Dm w?i)/q public String getSFilePath() :S#i9# aB { }q]jjs return sFilePath; K,]woNxaw } r\B"?oqC .}`V I`z* h*l
cEzG?A public void setSFilePath(String value) VH[l\I(h { ys/vI/e\ sFilePath = value; =CE HRny } JC/d:. !L/tLHk+ }]`}Ja public String getSFileName() >gF-6nPQ { c|+y9(0|y return sFileName; *s~i 2} } kM,@[V 0+rW;-_( j+ I*Xw public void setSFileName(String value) =^#0. { g(1"GKg3K sFileName = value; $.;iu2iyo } ]M uF9={ K1<k+t/V JLml#Pu4 public int getNSplitter() g4i #1V= { b13nE. return nSplitter; DVbYShB } ^^7gDgT n00z8B1j(l UYH|?Jw!N public void setNSplitter(int nCount) 4I
z.fAw { f^~2^p
1te nSplitter = nCount; 3|jn,?K)N } s
*K:IgJ/ } MV9r5 |3- NWeV>;lh9 5%'o%`?i /* Nz}|%.GP" **Utility.java $vz_%Y */ { qjUI package NetFox; r.?qEe8VV GsI[N% . c#90RP public class Utility { Oxpo6G 58 kv#;j 2lF WW(
public Utility() y)0gJP
L^ { <. ezw4ju r!CA2iK` $tEdBnf^ca } HhzkMJR8 r}Ltv?4 //线程睡眠
nMLU-C!t public static void sleep(int nSecond) Sb^a dd0dT { {npOlV try{
hZ%2?v` Thread.sleep(nSecond); ]Qh[%GD } :{x!g6bK@ catch(Exception e) kBQ5]Q" { C+DG+_%V*S e.printStackTrace (); _xa}B,H } 2-QuT"Gkd } {_rZRyr 'W}~)+zK //日志 g9M')8a n public static void log(String sMsg)
b$PT_!d { NJ.rv System.err.println(sMsg); ,"x23=] } Pv^(Q] <yis 4
`j,&= public static void log(int sMsg) 6\%r6_.d { B >ms`|q=l System.err.println(sMsg); f34_?F<h } 6s> sj7 } ~ W2:NQ>i 9yO{JgKA qn5yD!1 /* @?'t@P:4 **TestMethod.java
~JAH-R */ #8P#^v]H package NetFox; 1'(_>S5CG `i"$*4#< Z|V"8jE public class TestMethod { <\B],M1=s= NEjPU#@c Xw&QrTDS` public TestMethod() :!r9 =N9 { ///xx/weblogic60b2_win.exe le
"JW/BD try{ 1EKcD^U, SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); !l sy&6 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); Oz"@yL} SiteFileFetch fileFetch = new SiteFileFetch(bean);
e-L5=B fileFetch.start(); 67Af} >Q } )->-~E}p9 catch(Exception e){e.printStackTrace ();} 2U-#0,ll] ls8olLM> e[d7UV[Knn } Zkwy.Hq^ 2+c>O%L M Ak-=?t public static void main(String[] args) }CB=c]p { MAm1w'ol" new TestMethod(); oO! 1 } (mD-FR@# } /\IAr,w[ 点击下载更多相关资料
|