searchsuggestaction.java

医药供应链管理系统

package com.captainli.util;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Vector;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class SearchSuggestAction extends HttpServlet {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		//js中解决乱码问题
		response.setContentType("text/html;UTF-8");
		response.setCharacterEncoding("UTF-8");
		String search = request.getParameter("search");
		Vector vData = new Vector();
		PrintWriter out = response.getWriter();
		String sql = "select p_name from produit where p_name like '%"+search+"%' or p_pinyin like '%"+search+"%'";
		try {
		    // 执行SQL语句，返回记录集
		    ResultSet rs = getResultSet(sql);
		    while (rs.next()) {
			vData.add(rs.getString("p_name"));
		    }
		} catch (SQLException e) {
		    e.printStackTrace();
		}
		StringBuffer buf = new StringBuffer();
		// 循环向量,组织客户端数据
		for (int i = 0; i < vData.size(); i++) {
		    String keyword = (String) vData.get(i);
		    buf.append(keyword + "\n");
		}
		out.print(buf.toString());
		out.flush();
		out.close();
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		this.doGet(request, response);
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occure
	 */
	public void init() throws ServletException {
		// Put your code here
	}
	/**
	 * 自定义方法
	 * @param sql
	 * @return
	 */
	public static ResultSet getResultSet(String sql) {
		boolean bSuccess = true;
		Statement stmt = null;
		ResultSet rs = null;
		Connection conn = GetConnection.getConn();
		if (conn == null)
		    bSuccess = false;
		if (bSuccess) {
		    try {
			stmt = conn.createStatement();// 通过Connection创建一个Statemet
			rs = stmt.executeQuery(sql);// 执行查询语句，
		    } catch (SQLException e) {
			e.printStackTrace();
			bSuccess = false;
		    }finally{
				
		    }
		}
		if (bSuccess)// 如果执行成功，则返回rs
		    return rs;
		else
		    return null;
	    }

}