personaljob.java

jsp+Oracle的网上求职源码

package qiuzhi;

import java.sql.*;
import java.util.*;
import java.security.*;

public class personaljob
{
	private Connection conn = null;
	public String error = null;       //错误信息
	private String username = null;   //登录用户名
	private String password = null;   //登录密码
	private String user_id = null;
	
	//初始化，进行数据库驱动的加载和数据库的连接
	public boolean init(String OracleDriver,String OracleUrl,String OracleUser,String OraclePsw)
	{
	    try
			{
			    Class.forName(OracleDriver);
					this.conn = DriverManager.getConnection(OracleUrl,OracleUser,OraclePsw);
					return true;
			}
			catch(Exception e)
			{
			    this.error = e.toString();
					return false;
			}
	}
	
	//返回中文字符
	public String getStr(String str)
	{
	    try
		  {
	        String temp_p = str;
			    byte[] temp_t = temp_p.getBytes("ISO8859-1");
			    String temp = new String(temp_t);
			    return temp;
		  }
		      catch(Exception e)
		  {
		      return null;
		  }
	}
	
	//HTML特殊字符转换
	public String HtmlSpecialChars(String str)
	{
	  if(str == null||str.equals(""))
		{
		    return str;
		}
		
		StringBuffer temp = new StringBuffer();
		int i = 0;
		while(i < str.length()) 
		{
		    //将\n转换成<br>
				if(str.charAt(i) == '\n')
				{
				    temp = temp.append("<br>");
				}
				
				//将空格转换成&nbsp;
				else if(str.charAt(i) == ' ')
				{
				    temp = temp.append("&nbsp;");
				}
				
				//将<转换成&lt;
				else if(str.charAt(i) == '<')
				{
				    temp = temp.append("&lt;");
				}
				
				//将>转换成&gt;
				else if(str.charAt(i) == '>')
				{
				    temp = temp.append("&gt;");
				}
				
				else
				{
				    temp = temp.append(str.substring(i,i+1));
				}
				
				i++;
		}
		
		String okstring = temp.toString();
		return okstring;
	}
	
	
	
	//设置登录用户名
	public void setUsername(String user)
	{
	    this.username = user;
	}
	
	//设置密码
	public void setPasswrod(String psw)
	{
	    this.password = psw;
	}
	
	public String getUserID()
	{
		return this.user_id;
	} 
	
	public int logcheck()
	{
			if(this.username == null || this.password == null)
			{
			    return -1;
			}
			else
			{
			    int i = 0;
					try
					{
					    String query = "select * from USERS where username='"+this.username+"' and password='"+this.password+"'";
						PreparedStatement ps = this.conn.prepareStatement(query);
						ResultSet res = ps.executeQuery();
					    if(res.next())
						{
							this.user_id = String.valueOf(res.getInt("id"));
							i = Integer.parseInt(res.getString("role"));
						}
						else
						{
							i = -1;
						}
					    res.close();
					    ps.close();
						return i;
					}
					catch(Exception e)
					{
						this.error = e.toString();
					    return -1;
					}
			}
	}
	
	public int getUserID(String username, String password)
	{
		ResultSet rs = null;
		Statement st = null;
		try
		{
			String sql = "select id from USERS where username = '"+username+"' and password='"+password+"'";
			st = this.conn.createStatement();
			rs = st.executeQuery(sql);
			int re = 0;
			if(rs.next())
			{
				re = rs.getInt("id");
			}
			return re;			
		}
		catch(Exception e)
		{
			return 0;
		}
	}
	
	public ResultSet getJobsSimply()
	{
	    String query = "select a.id,cop_id,job_name,job_addr,job_get,job_sta,job_end,job_grad,job_lang,cop_name from JOBS a,COMPANY b where b.id = a.cop_id order by a.id desc";
			ResultSet res = null;
			try
			{
			    PreparedStatement ps = this.conn.prepareStatement(query);
					res = ps.executeQuery();
					return res;
			}
			catch(Exception e)
			{
			    this.error = e.toString();
					return null;
			}
	}
	
	public ResultSet getCopInfo(String id)
	{
	    if(id == null || this.username == null || id == "" || this.username == "")
			    return null;
					
			String query = "select a.*, b.name from COMPANY a,USERS b where a.id="+id+" and a.user_id = b.id";
			ResultSet res = null;
			try
			{
			    PreparedStatement ps = this.conn.prepareStatement(query);
					res = ps.executeQuery();
					return res;
			}
			catch(Exception e)
			{
			    this.error = e.toString();
					return null;
			}
	}
	
	public ResultSet getJobInfo(String id)
	{
	    if(id == null || this.username == null || id == "" || this.username == "")
			    return null;
					
			String query = "select * from JOBS where id="+id;
			ResultSet res = null;
			try
			{
			    PreparedStatement ps = this.conn.prepareStatement(query);
					res = ps.executeQuery();
					return res;
			}
			catch(Exception e)
			{
			    this.error = e.toString();
					return null;
			}
	}
	
	public boolean addJob(String cop_id,String job_name,String job_mann,String job_addr,String job_num,String job_get,String job_sta,String job_end,String job_age1,String job_age2,String job_grad,String job_lang,String job_expe,String job_oget,String job_odem)
	{
	    try
			{
				String sql = new String("select max(id) from JOBS");
			    PreparedStatement ps = this.conn.prepareStatement(sql);
			    ResultSet rs1 = ps.executeQuery();
			    int id = 0;
			    if(rs1.next())
			    {
			    	id = rs1.getInt(1);
			    }
					id = id + 1;
			    ps = null;
				sql = null;
				sql = new String("INSERT INTO JOBS(id,cop_id,job_name,job_mann,job_addr,job_num,job_get,job_sta,job_end,job_age1,job_age2,job_grad,job_lang,job_expe,job_oget,job_odem");
				sql += "values(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)";
			    ps = this.conn.prepareStatement(sql);
			    ps.setInt(1,id);
			    ps.setString(2,cop_id);
				ps.setString(3,job_name);
			    ps.setInt(4,Integer.parseInt(job_mann));
			    ps.setString(5,job_addr);
				ps.setInt(6,Integer.parseInt(job_num));
				ps.setString(7,job_get);
				ps.setInt(8,Integer.parseInt(job_sta));
				ps.setInt(9,Integer.parseInt(job_end));
				ps.setInt(10,Integer.parseInt(job_grad));
				ps.setInt(11,Integer.parseInt(job_age1));
				ps.setInt(12,Integer.parseInt(job_age2));
				ps.setInt(13,Integer.parseInt(job_lang));
				ps.setInt(14,Integer.parseInt(job_expe));
				ps.setString(15,job_odem);
				ps.setString(16,job_oget);			
    	    int ok = ps.executeUpdate();
		      if(ok==1)
    			{
    	        ps.close();
    	    		this.conn.close();
    	    		return true;
    			}
		      else
    			{
    	        ps.close();
    	    		this.conn.close();
    	        return false;
    			}
			}
			catch(Exception e)
			{
			    this.error = e.toString();
					return false;
			}
	}
	
	public boolean deleteJob(String id)
	{
	    if(id == null || this.username == null || id == "" || this.username == "")
			    return false;
					
			String query = "delete from JOBS where id="+id;
			try
			{
			    PreparedStatement ps = this.conn.prepareStatement(query);
					int res = ps.executeUpdate();
					ps = null;
				query = "delete from resume where job_id = "+id;
					ps = this.conn.prepareStatement(query);
					ps.executeUpdate();
					ps = null;
				query = "delete from reply where job_id = "+id;
					ps = this.conn.prepareStatement(query);
					ps.executeUpdate();
					if(res == 1)
					{
					    ps.close();
					    return true;
					}
					else
					{
					    ps.close();
					    return false;
					}
			}
			catch(Exception e)
			{
			    this.error = e.toString();
					return false;
			}
	}
	
	public String[] sendGetInfo(String user_id,String job_id)
	{
	    String query = null;
			String[] info = new String[3];
			try
			{
				query = "select * from RESUME where user_id="+user_id+" and job_id="+job_id;
			    PreparedStatement ps = this.conn.prepareStatement(query);
					ResultSet res = ps.executeQuery();
					//int i = 0;
					if(res.next())
					{
						info[0] = res.getString("cop_name");
						info[1] = res.getString("job_name");
						info[2] = res.getString("intro");
						//info[3] = res.getInt("id");
						ps.close();
						return info;
					}
					else
					{
						ps = null;
						res = null;
						query = "select a.cop_name,b.job_name from COMPANY a, JOBS b where b.id ="+job_id+" and a.id = b.cop_id";
						ps = this.conn.prepareStatement(query);
						res = ps.executeQuery();
						if(res.next())
						{
							info[0] = res.getString(1);
							info[1] = res.getString(2);
							info[2] = "";
							ps.close();
							return info;
						}
						else
						{
							return null;
						}
					}
	
			}
			catch(Exception e)
			{
			    this.error = e.toString();
					return null;
			}
	}
	
	public boolean sending(String[] info)
	{
			String id = info[0];
			String intro = this.HtmlSpecialChars(info[1]);
			if(id == null || id.equals(""))
			{
			    return false;
			}