中文转换问题

[cyberleon]

<%@ page contentType="text/html;charset=GB2312" %>
<%@ page import="java.util.*" %>

<%
String keyword = request.getParameter( "keyword" );

String a = ("测试");
String b = (keyword);
if (a.equals(b))
{
out.println("Yes");
}
else
{
out.println("No");
}
%>

运行结果显示No
怎样转换String keyword才能使结果显示Yes？

[Andrawu]

<%@ page contentType="text/html;charset=GB2312" %>
<%@ page import="java.util.*" %>

<%
String keyword = request.getParameter( "keyword" );
String sStr =new String(keyword.getBytes("8859_1"),"gb2312");
String a = "测试";
if (a.equals(sStr))
{
out.println("Yes");
}
else
{
out.println("No");
}
%>

[weidegong]

常用的两个方法
//中文编码的转换
public String toGb(String uniStr){
String gbStr = "";
if(uniStr == null){
uniStr = "";
}
try{
byte[] tempByte = uniStr.getBytes("ISO8859_1");
gbStr = new String(tempByte,"GB2312");
}catch(UnsupportedEncodingException uef){
}
return gbStr;
}
public String toUni(String gbStr){
String uniStr = "";
if(gbStr == null){
gbStr = "";
}
try{
byte[] tempByte = gbStr.getBytes("GB2312");
uniStr = new String(tempByte,"ISO8859_1");
}catch(UnsupportedEncodingException uef){
}
return uniStr;
}

[thebear810611]

同意楼上的，
但new String句少了一个右括号