gettags.java

JSP Ajax开发实例 技术平台：Tomcat 5.0服务器； 开发工具：Eclipse＋Lomboz、EditPlus开发工具

package cn.ajax;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import cn.ajax.db.DBConnect;
public class getTags extends HttpServlet{
	private static final long serialVersionUID = 1L;
	public void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException, java.io.IOException{
		PrintWriter out = response.getWriter();
		StringBuffer buf = new StringBuffer();
		String str = "select * from tags";
		try{
			DBConnect dbconnect = new DBConnect();
			dbconnect.excuteQuery(str);
			buf.append("{ tags:[");
			if(dbconnect.next()){
				buf.append("{tagId:'"+dbconnect.getInt("tagid")+"',tagName:'"+dbconnect.getString("tagname")+"'},");
			}	
			buf.append("{tagId:'000',tagName:'000'}]}");
		}catch(Exception e)
		{
			e.printStackTrace();
		}
        out.print(buf.toString());		
	}
	public void doGet(HttpServletRequest request,HttpServletResponse response) throws ServletException, java.io.IOException{		
		doPost(request,response);
	}
}