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package com.cvs.dao;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import com.cvs.util.DBUtil;
public class MessageDao {
public int addMessage(String name, String email, String phone,
String message) {
Connection conn = DBUtil.getConnection();
int count = 0;
try {
PreparedStatement ps = conn
.prepareStatement("insert into message (name,email,phone,message) value(?,?,?,?) ");
ps.setString(1, name);
ps.setString(2, email);
ps.setString(3, phone);
ps.setString(4, message);
count= ps.executeUpdate();
ps.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
DBUtil.closeConn();
}
return count;
}
}
package com.cvs.servlert;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.alibaba.fastjson.JSON;
import com.cvs.dao.MessageDao;
public class MessageServlet extends HttpServlet {
/**
* Constructor of the object.
*/
public MessageServlet() {
super();
}
/**
* 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 {
String name=request.getParameter("name");
String email=request.getParameter("email");
String phone=request.getParameter("phone");
String message=request.getParameter("message");
MessageDao messageDao=new MessageDao();
int count= messageDao.addMessage(name, email, phone, message);
OutputStream out=response.getOutputStream();
Map map=new HashMap();
map.put("statu", 1);
map.put("msg", count);
String json=JSON.toJSONString(map);
out.write(json.getBytes());
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 {
doGet(request, response);
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}
}
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<servlet>
<description>This is the description of my J2EE component</description>
<display-name>This is the display name of my J2EE component</display-name>
<servlet-name>ClassServlet</servlet-name>
<servlet-class>com.cvs.servlert.ClassServlet</servlet-class>
</servlet>
<servlet>
<description>This is the description of my J2EE component</description>
<display-name>This is the display name of my J2EE component</display-name>
<servlet-name>MessageServlet</servlet-name>
<servlet-class>com.cvs.servlert.MessageServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>ClassServlet</servlet-name>
<url-pattern>/ClassServlet</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>MessageServlet</servlet-name>
<url-pattern>/MessageServlet</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>