?? listtag.java
字號:
package org.it315;
import java.io.IOException;
import java.util.Map;
import java.util.HashMap;
import java.util.Set;
import java.util.Iterator;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.DynamicAttributes;
import javax.servlet.jsp.tagext.TagSupport;
public class ListTag extends TagSupport implements DynamicAttributes
{
private String name;
private HashMap map = new HashMap();
public void setName(String name)
{
this.name = name;
}
public void setDynamicAttribute(String uri, String localName, Object value)
throws JspException
{
map.put(localName,value);
}
public int doStartTag() throws JspException
{
JspWriter out = pageContext.getOut();
Set list = map.entrySet();
try
{
out.print("<select name='" + name + "'>");
Iterator it = list.iterator();
while(it.hasNext())
{
Map.Entry entry = (Map.Entry)it.next();
out.print(" <option value='");
out.print(entry.getKey());
out.print("'>");
out.print(entry.getValue());
out.println("</option>");
}
}
catch (IOException e)
{
e.printStackTrace();
}
return super.doStartTag();
}
}
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -