成都大学心理健康测试系统 (部分源代码)

一、连接数据库:

package com.scujcc;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.sql.DataSource;

import com.scujcc.Quiz;

public class DB {
    private Connection conn;
    public void connect()
    {
        Context ctx;
        try
        {
            ctx=new InitialContext();
            DataSource ds=(DataSource) ctx.lookup("java:comp/env/mypool");
            conn=ds.getConnection();
            System.out.println("成功获取连接"+conn);
        }
        catch(NamingException e)
        {
            e.printStackTrace();
        }
        catch(SQLException e)
        {
            e.printStackTrace();
        }
    }
    
    /**
     * 此方法可向数据库中添加一个心理测试题目
     * @param quiz 即将添加的测试题目
     * @return 若添加成功则返回true，否则返回false
     */
    public int add1(Quiz quiz)
    {
        int result=-1;
        connect();
        try
        {
            PreparedStatement ps=conn.prepareStatement("update csone set c_content=?,c_answer=? where id=1");
            ps.setString(1, quiz.getTitle());
            ps.setString(2, quiz.getContent());
            int count=ps.executeUpdate();
            if(count>0)
            {
                ResultSet generatedKeys = ps.getGeneratedKeys();
                   if (generatedKeys.next()) {
                        result = generatedKeys.getInt(1);
                    }
            }
        }
        catch(SQLException e)
        {
            e.printStackTrace();
        }
        finally
        {
            try
            {
                if(null!=conn)
                {
                    conn.close();
                }
            }
            catch(SQLException e)
            {
                e.printStackTrace();
            }
        }
        return result;
    }
    
    public int add2(Quiz quiz)
    {
        int result=-1;
        connect();
        try
        {
            PreparedStatement ps=conn.prepareStatement("update csone set c_content=?,c_answer=? where id=2");
            ps.setString(1, quiz.getTitle());
            ps.setString(2, quiz.getContent());
            int count=ps.executeUpdate();
            if(count>0)
            {
                ResultSet generatedKeys = ps.getGeneratedKeys();
                   if (generatedKeys.next()) {
                        result = generatedKeys.getInt(1);
                    }
            }
        }
        catch(SQLException e)
        {
            e.printStackTrace();
        }
        finally
        {
            try
            {
                if(null!=conn)
                {
                    conn.close();
                }
            }
            catch(SQLException e)
            {
                e.printStackTrace();
            }
        }
        return result;
    }
    
    public int add3(Quiz quiz)
    {
        int result=-1;
        connect();
        try
        {
            PreparedStatement ps=conn.prepareStatement("update csone set c_content=?,c_answer=? where id=3");
            ps.setString(1, quiz.getTitle());
            ps.setString(2, quiz.getContent());
            int count=ps.executeUpdate();
            if(count>0)
            {
                ResultSet generatedKeys = ps.getGeneratedKeys();
                   if (generatedKeys.next()) {
                        result = generatedKeys.getInt(1);
                    }
            }
        }
        catch(SQLException e)
        {
            e.printStackTrace();
        }
        finally
        {
            try
            {
                if(null!=conn)
                {
                    conn.close();
                }
            }
            catch(SQLException e)
            {
                e.printStackTrace();
            }
        }
        return result;
    }
    
    public int add4(Quiz quiz)
    {
        int result=-1;
        connect();
        try
        {
            PreparedStatement ps=conn.prepareStatement("update csone set c_content=?,c_answer=? where id=4");
            ps.setString(1, quiz.getTitle());
            ps.setString(2, quiz.getContent());
            int count=ps.executeUpdate();
            if(count>0)
            {
                ResultSet generatedKeys = ps.getGeneratedKeys();
                   if (generatedKeys.next()) {
                        result = generatedKeys.getInt(1);
                    }
            }
        }
        catch(SQLException e)
        {
            e.printStackTrace();
        }
        finally
        {
            try
            {
                if(null!=conn)
                {
                    conn.close();
                }
            }
            catch(SQLException e)
            {
                e.printStackTrace();
            }
        }
        return result;
    }
}

package com.scujcc;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.sql.DataSource;

import com.scujcc.Quiz;

public class DB2 {
    private Connection conn;
    public void connect()
    {
        Context ctx;
        try
        {
            ctx=new InitialContext();
            DataSource ds=(DataSource) ctx.lookup("java:comp/env/mypool");
            conn=ds.getConnection();
            System.out.println("成功获取连接"+conn);
        }
        catch(NamingException e)
        {
            e.printStackTrace();
        }
        catch(SQLException e)
        {
            e.printStackTrace();
        }
    }
    
    /**
     * 此方法可向数据库中添加一个心理测试题目
     * @param quiz 即将添加的测试题目
     * @return 若添加成功则返回true，否则返回false
     */
    public int add1(Quiz quiz)
    {
        int result=-1;
        connect();
        try
        {
            PreparedStatement ps=conn.prepareStatement("update ceshitwo set c_content=?,c_answer=? where id=1");
            ps.setString(1, quiz.getTitle());
            ps.setString(2, quiz.getContent());
            int count=ps.executeUpdate();
            if(count>0)
            {
                ResultSet generatedKeys = ps.getGeneratedKeys();
                   if (generatedKeys.next()) {
                        result = generatedKeys.getInt(1);
                    }
            }
        }
        catch(SQLException e)
        {
            e.printStackTrace();
        }
        finally
        {
            try
            {
                if(null!=conn)
                {
                    conn.close();
                }
            }
            catch(SQLException e)
            {
                e.printStackTrace();
            }
        }
        return result;
    }
    
    public int add2(Quiz quiz)
    {
        int result=-1;
        connect();
        try
        {
            PreparedStatement ps=conn.prepareStatement("update ceshitwo set c_content=?,c_answer=? where id=2");
            ps.setString(1, quiz.getTitle());
            ps.setString(2, quiz.getContent());
            int count=ps.executeUpdate();
            if(count>0)
            {
                ResultSet generatedKeys = ps.getGeneratedKeys();
                   if (generatedKeys.next()) {
                        result = generatedKeys.getInt(1);
                    }
            }
        }
        catch(SQLException e)
        {
            e.printStackTrace();
        }
        finally
        {
            try
            {
                if(null!=conn)
                {
                    conn.close();
                }
            }
            catch(SQLException e)
            {
                e.printStackTrace();
            }
        }
        return result;
    }
    
    public int add3(Quiz quiz)
    {
        int result=-1;
        connect();
        try
        {
            PreparedStatement ps=conn.prepareStatement("update ceshitwo set c_content=?,c_answer=? where id=3");
            ps.setString(1, quiz.getTitle());
            ps.setString(2, quiz.getContent());
            int count=ps.executeUpdate();
            if(count>0)
            {
                ResultSet generatedKeys = ps.getGeneratedKeys();
                   if (generatedKeys.next()) {
                        result = generatedKeys.getInt(1);
                    }
            }
        }
        catch(SQLException e)
        {
            e.printStackTrace();
        }
        finally
        {
            try
            {
                if(null!=conn)
                {
                    conn.close();
                }
            }
            catch(SQLException e)
            {
                e.printStackTrace();
            }
        }
        return result;
    }
    
    public int add4(Quiz quiz)
    {
        int result=-1;
        connect();
        try
        {
            PreparedStatement ps=conn.prepareStatement("update ceshitwo set c_content=?,c_answer=? where id=4");
            ps.setString(1, quiz.getTitle());
            ps.setString(2, quiz.getContent());
            int count=ps.executeUpdate();
            if(count>0)
            {
                ResultSet generatedKeys = ps.getGeneratedKeys();
                   if (generatedKeys.next()) {
                        result = generatedKeys.getInt(1);
                    }
            }
        }
        catch(SQLException e)
        {
            e.printStackTrace();
        }
        finally
        {
            try
            {
                if(null!=conn)
                {
                    conn.close();
                }
            }
            catch(SQLException e)
            {
                e.printStackTrace();
            }
        }
        return result;
    }
}

二、servlet:

package com.scujcc;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class QuizServlet
 */
@WebServlet("/admin/quiz")
public class QuizServlet extends HttpServlet {
    private static final long serialVersionUID = 54115222L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public QuizServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        response.getWriter().append("Served at: ").append(request.getContextPath());
        DB d=new DB();
        d.connect();
        response.getWriter().append("数据库连接池测试");
    }

}

三、

心理测试后台

package com.scujcc;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

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

import com.rui.Choice;

/**
 * Servlet implementation class Ttest1
 */
@WebServlet("/admin/ttest1")
public class Ttest1 extends HttpServlet {
    private static final long serialVersionUID = 15424529677L;
List choices=new ArrayList();
    
    private void data2()
    {
        Connection conn=null;
        ResultSet rs=null;
        try 
        {
            //1连接mysql
            Class.forName("com.mysql.jdbc.Driver");
            String url="jdbc:mysql://127.0.0.1:3306/jsp?serverTimezone=GMT";
            conn=DriverManager.getConnection(url, "root", "123456");
        
            
            //2执行sql
            String sql="select * from csone";
            PreparedStatement ps=conn.prepareStatement(sql);
            rs=ps.executeQuery();
            
            //3读取结果
            while(rs.next())
            {
                Choice c= new Choice();
                c.setId(rs.getInt("id"));
                c.setContent(rs.getString("c_content"));
                c.setAnswer(rs.getString("c_answer"));
                choices.add(c);
            }
        }
        catch(ClassNotFoundException e)
        {
            System.out.println("找不到mysql驱动程序com.jdbc.Driver");
        }
        catch(SQLException e)
        {
            e.printStackTrace();
        }
        finally
        {
            try
            {
                if(rs!=null)
                {
                    rs.close();
                }
                if(conn!=null)
                {
                    conn.close();
                }            
            }
            catch(SQLException e)
            {
                System.out.print("关闭连接时出错了！");
            }
        }
    }
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public Ttest1() {
        super();
        // TODO Auto-generated constructor stub
    }

    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        response.setCharacterEncoding("GB18030");
        response.getWriter().append("Served at: ").append(request.getContextPath());
        
        
        data2();
        request.setAttribute("choices", choices);
        
        getServletContext()
            .getRequestDispatcher("/shanchu1.jsp")
            .forward(request, response);
    }

    /**
     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        doGet(request, response);
        String choice=request.getParameter("choice");
        int choicei=0;
        if(null != choice)
        {
            choicei=Integer.parseInt(choice);
        }
    
        //根据choicei的值（可能为1,2,3,4。来输出其对应的答案）
        Choice userChoice=null;
        for(Object c: choices)
        {
            Choice cc=(Choice) c;
            if(cc.getId()==choicei)
            {
                    userChoice=cc;
                    break;
            }
        }
    
        
        
        

        
        String msg= "";
        int[] result = {0,0,0,0};
        int y=userChoice.getId();
            Delete1 d=new Delete1();
                if(y==1)
                {
                    result[0]=d.add1();
                }
                else if(y==2)
                {
                    result[1]=d.add2();
                }
                else if(y==3)
                {
                    result[2]=d.add3();
                }
                else if(y==4)
                {
                    result[3]=d.add4();
                }
//                if(result[m]>0)
//                {
//                    msg[m] = "成功添加测试题：" + quiz.getTitle()+"id为："+result;
//                }
        PrintWriter out=response.getWriter();
        out.append(msg);
        request.setAttribute("msg", msg);
        getServletContext().getAttribute("userCounter");
        
        getServletContext().getRequestDispatcher("/admin/ttest1").forward(request, response);
    }

}

    private static final long serialVersionUID = 154529677L;
List choices=new ArrayList();
    
    private void data2()
    {
        Connection conn=null;
        ResultSet rs=null;
        try 
        {
            //1连接mysql
            Class.forName("com.mysql.jdbc.Driver");
            String url="jdbc:mysql://127.0.0.1:3306/jsp?serverTimezone=GMT";
            conn=DriverManager.getConnection(url, "root", "123456");
        
            
            //2执行sql
            String sql="select * from ceshitwo";
            PreparedStatement ps=conn.prepareStatement(sql);
            rs=ps.executeQuery();
            
            //3读取结果
            while(rs.next())
            {
                Choice c= new Choice();
                c.setId(rs.getInt("id"));
                c.setContent(rs.getString("c_content"));
                c.setAnswer(rs.getString("c_answer"));
                choices.add(c);
            }
        }
        catch(ClassNotFoundException e)
        {
            System.out.println("找不到mysql驱动程序com.jdbc.Driver");
        }
        catch(SQLException e)
        {
            e.printStackTrace();
        }
        finally
        {
            try
            {
                if(rs!=null)
                {
                    rs.close();
                }
                if(conn!=null)
                {
                    conn.close();
                }            
            }
            catch(SQLException e)
            {
                System.out.print("关闭连接时出错了！");
            }
        }
    }
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public Ttest2() {
        super();
        // TODO Auto-generated constructor stub
    }

    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        response.setCharacterEncoding("GB18030");
        response.getWriter().append("Served at: ").append(request.getContextPath());
        
        
        data2();
        request.setAttribute("choices", choices);
        
        getServletContext()
            .getRequestDispatcher("/shanchu2.jsp")
            .forward(request, response);
    }

    /**
     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        doGet(request, response);
        String choice=request.getParameter("choice");
        int choicei=0;
        if(null != choice)
        {
            choicei=Integer.parseInt(choice);
        }
    
        //根据choicei的值（可能为1,2,3,4。来输出其对应的答案）
        Choice userChoice=null;
        for(Object c: choices)
        {
            Choice cc=(Choice) c;
            if(cc.getId()==choicei)
            {
                    userChoice=cc;
                    break;
            }
        }
    
        
        
        

        
        String msg= "";
        int[] result = {0,0,0,0};
        int y=userChoice.getId();
            Delete2 d=new Delete2();
                if(y==1)
                {
                    result[0]=d.add1();
                }
                else if(y==2)
                {
                    result[1]=d.add2();
                }
                else if(y==3)
                {
                    result[2]=d.add3();
                }
                else if(y==4)
                {
                    result[3]=d.add4();
                }
//                if(result[m]>0)
//                {
//                    msg[m] = "成功添加测试题：" + quiz.getTitle()+"id为："+result;
//                }
        PrintWriter out=response.getWriter();
        out.append(msg);
        request.setAttribute("msg", msg);
        getServletContext().getAttribute("userCounter");
        
        getServletContext().getRequestDispatcher("/admin/ttest2").forward(request, response);
    }

}

四、主页后台

package com.scujcc;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class Fhxszhuye2
 */
@WebServlet("/admin/fhxszhuye2")
public class Fhxszhuye2 extends HttpServlet {
    private static final long serialVersionUID = 767868767L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public Fhxszhuye2() {
        super();
        // TODO Auto-generated constructor stub
    }

    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        response.getWriter().append("Served at: ").append(request.getContextPath());
        getServletContext()
        .getRequestDispatcher("/WEB-INF/xszhuye2.jsp")
        .forward(request, response);
    }

    /**
     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        doGet(request, response);
    }

}