jsp Model1 示例系统

package clxtest; import java.sql.*; import java.util.*; import javax.servlet.http.*; public class CLXUser { public String userName = ""; public String userAge = ""; public String userSex = ""; public String userID = ""; public String userIDOrigin = ""; private String sql = ""; private String sqlWhere = ""; public void setInsertValue(HttpServletRequest request) { userName = request.getParameter("userName"); userSex = request.getParameter("userSex"); userAge = request.getParameter("userAge"); userID = request.getParameter("userID"); } public void buildInsertSQL() { sql = "insert into table_user ("; sql += "userName,userSex,userAge,userID"; sql += ") values ("; sql += "'" + userName + "',"; sql += "'" + userSex + "',"; sql += "'" + userAge + "',"; sql += "'" + userID + "'"; sql += ")"; } public void executeUpdate() throws Exception { Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); Connection connection = DriverManager.getConnection("jdbc:odbc:user"); Statement statement = connection.createStatement(); statement.executeUpdate(new String(sql.getBytes("iso8859-1"))); statement.close(); connection.close(); } public void insertUser(HttpServletRequest request) throws Exception { setInsertValue(request); buildInsertSQL(); executeUpdate(); } public void getUserByQueryString(HttpServletRequest request) throws Exception { Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); sql = "select * "; sql += "from table_user "; sql += "where userID='" + request.getParameter("userID") + "'"; Connection connection = DriverManager.getConnection("jdbc:odbc:user"); Statement statement = connection.createStatement(); ResultSet resultSet = statement.executeQuery(sql); resultSet.next(); userName = resultSet.getString("userName"); userSex = resultSet.getString("userSex"); userAge = resultSet.getString("userAge"); userID = resultSet.getString("userID"); statement.close(); connection.close(); } public void setUpdateValue(HttpServletRequest request) { userName = request.getParameter("userName"); userSex = request.getParameter("userSex"); userAge = request.getParameter("userAge"); userID = request.getParameter("userID"); userIDOrigin = request.getParameter("userIDOrigin"); } public void buildUpdateSQL() { sql = "update table_user set "; sql += "userName='" + userName + "',"; sql += "userSex='" + userSex + "',"; sql += "userAge='" + userAge + "',"; sql += "userID='" + userID + "'"; sql += "where userID='" + userIDOrigin + "'"; } public void updateUser(HttpServletRequest request) throws Exception { setUpdateValue(request); buildUpdateSQL(); executeUpdate(); } public Vector getUserByPost(HttpServletRequest request) throws Exception { Vector vector = new Vector(20,10); Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); sql = "select * "; sql += "from table_user "; if(request.getParameter("userName").length() > 0) sqlWhere += "and userName like '%" + request.getParameter("userName") + "%'"; if(request.getParameter("userID").length() > 0) sqlWhere += "and userID like '%" + request.getParameter("userID") + "%'"; if(sqlWhere.length() > 0) sql = sql + " where " + sqlWhere.substring(4); Connection connection = DriverManager.getConnection("jdbc:odbc:user"); Statement statement = connection.createStatement(); ResultSet resultSet = statement.executeQuery(new String(sql.getBytes("iso8859-1"))); while(resultSet.next()) { CLXUser user = new CLXUser(); user.userName = resultSet.getString("userName"); user.userSex = resultSet.getString("userSex"); user.userAge = resultSet.getString("userAge"); user.userID = resultSet.getString("userID"); vector.add(user); } statement.close(); connection.close(); return vector; } public void setDeleteValue(HttpServletRequest request) { userID = request.getParameter("userDelete"); } public void buildDeleteSQL() { sql = "delete from table_user "; sql += "where userID='" + userID + "'"; } public void deleteUser(HttpServletRequest request) throws Exception { setDeleteValue(request); buildDeleteSQL(); executeUpdate(); } }