encodeURL的问题？谢了。

[dciw]

因为对接口，是在java中拼成的html串，在jsp页面中直接引用的，因此在拼成的html串中拼出的连接，就不能使用jsp中的自动encodeURL的功能.

"<a href=Detail.jsp?id=" + sID +"&rootid="+ sRootID +"&name="+ URLEncoder.encode(sName) +"&type="+ sTypeItem +">"，
变量sName中间可能会出现空格，在Detail.jsp中就会有问题。

而因为不是servlet，没引用（虚类）ServletResponse，无法用它的encodeURL函数
目前引用的是 java.net.URLEncoder和URLDecoder类，但sName出现中文的时候，URLEncoder加密之后，URLDecoder就解析出来就是乱码了。

编译环境是lunix

不知道是我的这个包用的问题,还是环境设置问题.

那位解答一下，谢了。

[aling]

在jsp中是可以用response对象的

[aling]

请从http://jakarta.apache.org/tomcat/index.html下载Tomcat源代码，然后参看里面类
jakarta-tomcat-5.0.1-src\jakarta-tomcat-connectors\util\java\org\apache\tomcat\util\buf\UEncoder.java类的代码，或许有帮助。
---------------------------------------------------------------------------------

package org.apache.tomcat.util.buf;

import org.apache.tomcat.util.buf.*;
import java.util.BitSet;
import java.io.*;

/** Efficient implementation for encoders.
* This class is not thread safe - you need one encoder per thread.
* The encoder will save and recycle the internal objects, avoiding
* garbage.
*
* You can add extra characters that you want preserved, for example
* while encoding a URL you can add "/".
*
* @author Costin Manolache
*/
public final class UEncoder {

// Not static - the set may differ ( it's better than adding
// an extra check for "/", "+", etc
private BitSet safeChars=null;
private C2BConverter c2b=null;
private ByteChunk bb=null;

private String encoding="UTF8";
private static final int debug=0;

public UEncoder() {
initSafeChars();
}

public void setEncoding( String s ) {
encoding=s;
}

public void addSafeCharacter( char c ) {
safeChars.set( c );
}


/** URL Encode string, using a specified encoding.
* @param s string to be encoded
* @param enc character encoding, for chars >%80 ( use UTF8 if not set,
* as recommended in RFCs)
* @param reserved extra characters to preserve ( "/" - if s is a URL )
*/
public void urlEncode( Writer buf, String s )
throws IOException
{
if( c2b==null ) {
bb=new ByteChunk(16); // small enough.
c2b=new C2BConverter( bb, encoding );
}

for (int i = 0; i < s.length(); i++) {
int c = (int) s.charAt(i);
if( safeChars.get( c ) ) {
if( debug > 0 ) log("Safe: " + (char)c);
buf.write((char)c);
} else {
if( debug > 0 ) log("Unsafe: " + (char)c);
c2b.convert( (char)c );

// "surrogate" - UTF is _not_ 16 bit, but 21 !!!!
// ( while UCS is 31 ). Amazing...
if (c >= 0xD800 && c <= 0xDBFF) {
if ( (i+1) < s.length()) {
int d = (int) s.charAt(i+1);
if (d >= 0xDC00 && d <= 0xDFFF) {
if( debug > 0 ) log("Unsafe: " + c);
c2b.convert( (char)d);
i++;
}
}
}

c2b.flushBuffer();

urlEncode( buf, bb.getBuffer(), bb.getOffset(),
bb.getLength() );
bb.recycle();
}
}
}

/**
*/
public void urlEncode( Writer buf, byte bytes[], int off, int len)
throws IOException
{
for( int j=off; j< len; j++ ) {
buf.write( '%' );
char ch = Character.forDigit((bytes[j] >> 4) & 0xF, 16);
if( debug > 0 ) log("Encode: " + ch);
buf.write(ch);
ch = Character.forDigit(bytes[j] & 0xF, 16);
if( debug > 0 ) log("Encode: " + ch);
buf.write(ch);
}
}

/**
* Utility funtion to re-encode the URL.
* Still has problems with charset, since UEncoder mostly
* ignores it.
*/
public String encodeURL(String uri) {
String outUri=null;
try {
// XXX optimize - recycle, etc
CharArrayWriter out = new CharArrayWriter();
urlEncode(out, uri);
outUri=out.toString();
} catch (IOException iex) {
}
return outUri;
}


// -------------------- Internal implementation --------------------

//
private void init() {

}

private void initSafeChars() {
safeChars=new BitSet(128);
int i;
for (i = 'a'; i <= 'z'; i++) {
safeChars.set(i);
}
for (i = 'A'; i <= 'Z'; i++) {
safeChars.set(i);
}
for (i = '0'; i <= '9'; i++) {
safeChars.set(i);
}
//safe
safeChars.set('$');
safeChars.set('-');
safeChars.set('_');
safeChars.set('.');

// Dangerous: someone may treat this as " "
// RFC1738 does allow it, it's not reserved
// safeChars.set('+');
//extra
safeChars.set('!');
safeChars.set('*');
safeChars.set('\'');
safeChars.set('(');
safeChars.set(')');
safeChars.set(',');
}

private static void log( String s ) {
System.out.println("Encoder: " + s );
}
}

[dciw]

我是在java里拼的串，不是在jsp里拼的。