getusername.java

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package com.wang.tags;

import javax.servlet.jsp.JspWriter;
import java.io.IOException;
import javax.servlet.jsp.tagext.BodyContent;
import com.wang.db.AdminDB;
import javax.servlet.jsp.tagext.BodyTagSupport;
import com.wang.db.MyDb;

public class GetUserName extends BodyTagSupport
{
    JspWriter out = null;
     public int doAfterBody() {
         BodyContent body = getBodyContent();
         String content = body.getString();
         out = body.getEnclosingWriter();
         MyDb db = new MyDb();
         int userId=Integer.parseInt(content);
         String name= db.getUser(userId).getRealName();
         db.Close();
         try {
           out.print(name);
         } catch (IOException e) {
             e.printStackTrace();
         }
         return (SKIP_BODY);
    }
}