发表于 2009-1-5 19:48
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鍦ˋpplet涓鍙栨枃浠跺唴瀹
鍙戝竷: 2008-6-25 14:48 | 浣滆: admin | 鏌ョ湅: 17娆
---- 鎴戜滑鐭ラ亾锛屽湪Java Applet涓嚭浜庡畨鍏ㄦц冭檻锛孉pplet鏄笉鍏佽瀵规枃浠惰繘琛屾搷浣滅殑锛屼笉浠呬笉鍏佽鍐欐枃浠讹紝鑰屼笖涓嶅厑璁歌鏂囦欢銆傚敖绠℃垜浠湪缂栧埗Applet鏃跺嵆浣夸娇鐢ㄤ簡鏂囦欢鎿嶄綔鐨勮鍙ava涓嶄細鎶ラ敊锛屽湪寮鍙戝伐鍏凤紙濡侰afe锛変腑璋冭瘯鏃朵篃鑳藉姝ｅ父杩愯锛屼絾褰撴垜浠湪娴忚鍣ㄤ腑杩愯杩欎釜Applet鏃舵祻瑙堝櫒灏变細鎶ラ敊銆備絾鏈夋椂鎴戜滑鐨勭‘瑕佽鍙栨枃浠朵腑鐨勫唴瀹癸紝姣斿瑕佸皢鏈嶅姟鍣ㄤ腑鐨.txt鏂囦欢鍐呭鍦ˋpplet涓樉绀哄嚭鏉ワ紝鏄笉鏄氨娌℃湁鍔炴硶浜嗗憿锛
---- 涓嶏紒鏈夊姙娉曘傚喅绐嶅氨鏄垜浠笉瑕佸皢杩欎簺鏈嶅姟鍣ㄤ笂鐨勬枃浠朵綔涓烘櫘閫氭枃浠舵潵澶勭悊锛岃屾槸灏嗗畠浠綔涓虹綉缁滆祫婧愭潵鑾峰彇瀹冧滑鐨勫唴瀹广傚湪Java涓彲鐢ㄤ簬鑾峰彇缃戠粶璧勬簮鐨勭被涓昏鏈変袱绉嶏紝涓鏄疷RL绫伙紝鍙︿竴涓槸URLConnection绫汇備袱涓被閮芥彁渚涗簡浠ュ瓧鑺傛祦鐨勬柟寮忚鍙栬祫婧愪俊鎭殑鏂规硶锛岃屼笖鍙互瀵硅祫婧愪俊鎭殑绫诲瀷浣滃嚭鍒ゆ柇锛屼互渚夸綔鐩稿簲鐨勫鐞嗐備笉鍚屼箣澶勬槸URLConnection绫诲彲鎻愪緵鐨勪俊鎭瘮URL绫昏澶氬緱澶氾紝瀹冮櫎浜嗗彲浠ヨ幏鍙栬祫婧愭暟鎹锛岃繕鍙互鎻愪緵璧勬簮闀垮害銆佽祫婧愬彂閫佹椂闂淬佽祫婧愭渶鏂版洿鏂版椂闂淬佽祫婧愮紪鐮併佽祫婧愮殑鏍囬绛夎澶氫俊鎭
---- 浠ヤ笅鏄袱涓被鐨勫父鐢ㄦ柟娉曘
URL绫伙細
? URL(String, String, int, String)
鏋勯犳柟娉曪紝鍒涘缓涓涓寘鍚崗璁被鍨嬨佷富鏈哄悕銆
绔彛鍙峰拰璺緞鐨刄RL瀵硅薄
? URL(String, String, String)
鏋勯犳柟娉曪紝鍒涘缓涓涓寘鍚崗璁被鍨嬨佷富鏈哄悕鍜岃矾寰
鐨刄RL瀵硅薄锛屽叾涓鍙ｅ彿涓虹己鐪佸
? URL(String)
鏋勯犳柟娉曪紝鍒涘缓涓涓猆RL瀵硅薄锛屽弬鏁板皢鍗忚
銆佷富鏈哄悕銆佺鍙ｅ彿鍜岃矾寰勭粍鍚堣捣鏉
? URL(URL,String)
鏋勯犳柟娉曪紝鏍规嵁缁欏畾URL瀵硅薄涓庣浉瀵硅矾寰勫垱寤轰竴涓柊鐨刄RL瀵硅薄
? Object getContent( )
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? InputStream openStream( )
浠庤祫婧愬杩斿洖涓涓緭鍏ユ祦
? URLConnection openConnection( )
鐢熸垚涓涓猆RLConnection瀵硅薄
URLConnection绫伙細
? protected URLConnection(URL)
鏋勯犳柟娉曪紝鍒涘缓涓涓拡瀵规寚瀹歎RL瀵硅薄鐨刄RLConnection绫
? Object getContent( )
杩斿洖URL瀵硅薄鎵瀵瑰簲鐨勫唴瀹
? InputStream getInputStream( )
鑾峰彇浠庡璞′腑璇诲彇鐨勫瓧鑺傛祦
? Protected static String guessContentTypeFromStream(InputStream is)
鏍规嵁杈撳叆娴佺寽娴嬪唴瀹圭殑绫诲瀷
---- 涓嬮潰浠ヨ鍙栨湇鍔″櫒涓婄殑.txt鏂囦欢鍐呭涓轰緥璇存槑濡備綍鍦ˋpplet涓鍙栨枃浠躲傝鏈嶅姟鍣ㄧ殑IP鍦板潃涓202.114.1.16锛.txt鏂囦欢鐨勮矾寰勪负/file/sample.txt銆備互涓嬫槸璇诲彇sample.txt鍐呭鐨凙pplet鐨勬簮浠ｇ爜銆
//getfile.html
< HTML >
< HEAD >
< TITLE >璇诲彇鏂囦欢鐨凙pplet< /TITLE >
< /HEAD >
< BODY >
杩欐槸鏈嶅姟鍣ㄤ笂TXT鏂囦欢鐨勫唴瀹< BR >
< Applet code="getFile.class" width=200 height=100 >
< /Applet >
< /BODY >
< /HTML >
//getFile.java
import java.awt.*;
import java.applet.*;
import java.net.*;
import java.io.*;
public class getFile extends Applet
{
String info;
public void init()
{
URL url;
URLConnection urlc;
resize(200,100);
setBackground(Color.white);
