Unabel to submit form data using jersy to mysql database - mysql

Question

This is the Database connection java file which will connect to mysql local databse
package com.example.dao;
import java.sql.Connection;
import java.sql.DriverManager;
public class Database {
public Connection getConnection() throws Exception
{
Connection connection = null;
try
{
String connectionURL = "jdbc:mysql://localhost:3306/test1";
Class.forName("com.mysql.jdbc.Driver").newInstance();
connection = DriverManager.getConnection(connectionURL,
"root", "root");
}
catch (Exception e)
{
e.printStackTrace();
}
return connection;
}
}
This is the web service file for getting and adding up the candidates using com.perpule/hello/plain to get simple hello message & /getCandidate to get all list of candidates
package com.example.webservice;
import java.util.ArrayList;
import javax.ws.rs.Consumes;
import javax.ws.rs.FormParam;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Request;
import javax.ws.rs.core.UriInfo;
import org.apache.http.HttpServerConnection;
import com.example.dao.Candidate;
import com.example.model.CandidateManager;
import com.google.gson.Gson;
#Path("/hello")
public class SayHello {
ArrayList<Candidate> candidateArr= new ArrayList<Candidate>();
#Context
UriInfo uriInfo;
#Context
Request request;
#GET
#Path("/plain")
#Produces(MediaType.TEXT_PLAIN)
public String sayHelloPlain()
{
return "hello ";
}
#GET
#Path("/candidates")
#Produces(MediaType.TEXT_PLAIN)
public String CandidateList()
{
String candidates=null ;
try {
candidateArr= new CandidateManager().getCandidates();
Gson gson=new Gson();
candidates=gson.toJson(candidateArr);
}catch (Exception e) {
e.printStackTrace();
}
return candidates;
}
#POST
#Path("/addCandidates")
#Consumes(MediaType.APPLICATION_FORM_URLENCODED)
#Produces(MediaType.TEXT_PLAIN)
public void submitCandidates(#FormParam("name") String name,
#FormParam("pass") String pass,
#FormParam("phone") String phone, #FormParam("email") String
email,#FormParam("city") String city)
{
Candidate candidate =new Candidate();
candidate.setName(name);
candidate.setPass(pass);
candidate.setPhone(phone);
candidate.setCity(city);
candidate.setEmail(email);
CandidateManager candidateManager=new CandidateManager();
try {
candidateManager.addCandidates(candidate);
} catch (Exception e) {
e.printStackTrace();
}
}
}
Model class
package com.example.model;
import java.sql.Connection;
import java.util.ArrayList;
import com.example.dao.Access;
import com.example.dao.Candidate;
import com.example.dao.Database;
public class CandidateManager {
public ArrayList<Candidate> getCandidates() throws Exception
{
ArrayList<Candidate> candidateList = new ArrayList<Candidate>();
Database db= new Database();
Connection con=db.getConnection();
Access access=new Access();
candidateList=access.getCandidates(con);
return candidateList;
}
public void addCandidates(Candidate candidate) throws Exception
{
// ArrayList<Candidate> candidateData = new ArrayList<Candidate>();
Database db= new Database();
Connection con=db.getConnection();
new Access().addCandidates(con,candidate);
}
}
This is the DAO class for execueteQuery purpose : code for addCandidate is here
package com.example.dao;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.ArrayList;
public class Access {
ResultSet rs=null;
public ArrayList<Candidate> getCandidates(Connection connection) throws
SQLException{
ArrayList<Candidate> candidateList =new ArrayList<Candidate>();
String sql="select * from candidate";
PreparedStatement psmt =connection.prepareStatement(sql);
rs=psmt.executeQuery();
try {
while(rs.next())
{
Candidate candidateObj = new Candidate();
candidateObj.setName(rs.getString("name"));
candidateObj.setPass(rs.getString("pass"));
candidateObj.setEmail(rs.getString("email"));
candidateObj.setPhone(rs.getString("phone"));
candidateObj.setCity(rs.getString("city"));
candidateList.add(candidateObj);
}
}catch (SQLException e) {
e.printStackTrace();
}
return candidateList;
}
public void addCandidates(Connection connection, Candidate candidate)
throws SQLException
{
String sql="insert into candidate values(?,?,?,?,?)";
try {
PreparedStatement preparedStatement
=connection.prepareStatement(sql);
// preparedStatement.executeQuery();
preparedStatement.setString(1, candidate.name);
preparedStatement.setString(2, candidate.pass);
preparedStatement.setString(3, candidate.phone);
preparedStatement.setString(4, candidate.city);
preparedStatement.setString(5, candidate.phone);
preparedStatement.execute();
connection.close();
}catch (Exception e) {
System.err.println("Got an exception!");
System.err.println(e.getMessage());
}
}
}