addnews.jsp

一个信息发布管理页面,可删除添加修改......用JSP+ACCESS开发

<%@ page contentType="text/html; charset=GB2312" language="java" import="java.sql.*" errorPage="" %>
<%@ include file="Connections/ch8.jsp" %>
<%request.setCharacterEncoding("GB2312");%>
<%
// *** Edit Operations: declare variables

// set the form action variable
String MM_editAction = request.getRequestURI();
if (request.getQueryString() != null && request.getQueryString().length() > 0) {
  String queryString = request.getQueryString();
  String tempStr = "";
  for (int i=0; i < queryString.length(); i++) {
    if (queryString.charAt(i) == '<') tempStr = tempStr + "&lt;";
    else if (queryString.charAt(i) == '>') tempStr = tempStr + "&gt;";
    else if (queryString.charAt(i) == '"') tempStr = tempStr +  "&quot;";
    else tempStr = tempStr + queryString.charAt(i);
  }
  MM_editAction += "?" + tempStr;
}

// connection information
String MM_editDriver = null, MM_editConnection = null, MM_editUserName = null, MM_editPassword = null;

// redirect information
String MM_editRedirectUrl = null;

// query string to execute
StringBuffer MM_editQuery = null;

// boolean to abort record edit
boolean MM_abortEdit = false;

// table information
String MM_editTable = null, MM_editColumn = null, MM_recordId = null;

// form field information
String[] MM_fields = null, MM_columns = null;
%>
<%
// *** Insert Record: set variables

if (request.getParameter("MM_insert") != null && request.getParameter("MM_insert").toString().equals("form1")) {

  MM_editDriver     = MM_ch8_DRIVER;
  MM_editConnection = MM_ch8_STRING;
  MM_editUserName   = MM_ch8_USERNAME;
  MM_editPassword   = MM_ch8_PASSWORD;
  MM_editTable  = "News";
  MM_editRedirectUrl = "adminnews.jsp";
  String MM_fieldsStr = "newstitle|value|newscontents|value|newsmemo|value|newsfrom|value";
  String MM_columnsStr = "newstitle|',none,''|newscontents|',none,''|newsmemo|',none,''|newsfrom|none,none,NULL";

  // create the MM_fields and MM_columns arrays
  java.util.StringTokenizer tokens = new java.util.StringTokenizer(MM_fieldsStr,"|");
  MM_fields = new String[tokens.countTokens()];
  for (int i=0; tokens.hasMoreTokens(); i++) MM_fields[i] = tokens.nextToken();

  tokens = new java.util.StringTokenizer(MM_columnsStr,"|");
  MM_columns = new String[tokens.countTokens()];
  for (int i=0; tokens.hasMoreTokens(); i++) MM_columns[i] = tokens.nextToken();

  // set the form values
  for (int i=0; i+1 < MM_fields.length; i+=2) {
    MM_fields[i+1] = ((request.getParameter(MM_fields[i])!=null)?(String)request.getParameter(MM_fields[i]):"");
  }
 
  // append the query string to the redirect URL
  if (MM_editRedirectUrl.length() != 0 && request.getQueryString() != null) {
    MM_editRedirectUrl += ((MM_editRedirectUrl.indexOf('?') == -1)?"?":"&") + request.getQueryString();
  }
}
%>
<%
// *** Insert Record: construct a sql insert statement and execute it

if (request.getParameter("MM_insert") != null) {

  // create the insert sql statement
  StringBuffer MM_tableValues = new StringBuffer(), MM_dbValues = new StringBuffer();
  for (int i=0; i+1 < MM_fields.length; i+=2) {
    String formVal = MM_fields[i+1];
    String elem;
    java.util.StringTokenizer tokens = new java.util.StringTokenizer(MM_columns[i+1],",");
    String delim    = ((elem = (String)tokens.nextToken()) != null && elem.compareTo("none")!=0)?elem:"";
    String altVal   = ((elem = (String)tokens.nextToken()) != null && elem.compareTo("none")!=0)?elem:"";
    String emptyVal = ((elem = (String)tokens.nextToken()) != null && elem.compareTo("none")!=0)?elem:"";
    if (formVal.length() == 0) {
      formVal = emptyVal;
    } else {
      if (altVal.length() != 0) {
        formVal = altVal;
      } else if (delim.compareTo("'") == 0) {  // escape quotes
        StringBuffer escQuotes = new StringBuffer(formVal);
        for (int j=0; j < escQuotes.length(); j++)
          if (escQuotes.charAt(j) == '\'') escQuotes.insert(j++,'\'');
        formVal = "'" + escQuotes + "'";
      } else {
        formVal = delim + formVal + delim;
      }
    }
    MM_tableValues.append((i!=0)?",":"").append(MM_columns[i]);
    MM_dbValues.append((i!=0)?",":"").append(formVal);
  }
  MM_editQuery = new StringBuffer("insert into " + MM_editTable);
  MM_editQuery.append(" (").append(MM_tableValues.toString()).append(") values (");
  MM_editQuery.append(MM_dbValues.toString()).append(")");
  
  if (!MM_abortEdit) {
    // finish the sql and execute it
    Driver MM_driver = (Driver)Class.forName(MM_editDriver).newInstance();
    Connection MM_connection = DriverManager.getConnection(MM_editConnection,MM_editUserName,MM_editPassword);
    PreparedStatement MM_editStatement = MM_connection.prepareStatement(MM_editQuery.toString());
    MM_editStatement.executeUpdate();
    MM_connection.close();

    // redirect with URL parameters
    if (MM_editRedirectUrl.length() != 0) {
      response.sendRedirect(response.encodeRedirectURL(MM_editRedirectUrl));
      return;
    }
  }
}
%>
<%
String Recordset1__MMColParam = "1";
if (request.getParameter("name") !=null) {Recordset1__MMColParam = (String)request.getParameter("name");}
%>
<%
Driver DriverRecordset1 = (Driver)Class.forName(MM_ch8_DRIVER).newInstance();
Connection ConnRecordset1 = DriverManager.getConnection(MM_ch8_STRING,MM_ch8_USERNAME,MM_ch8_PASSWORD);
PreparedStatement StatementRecordset1 = ConnRecordset1.prepareStatement("SELECT * FROM Manager WHERE loginname = '" + Recordset1__MMColParam + "'");
ResultSet Recordset1 = StatementRecordset1.executeQuery();
boolean Recordset1_isEmpty = !Recordset1.next();
boolean Recordset1_hasData = !Recordset1_isEmpty;
Object Recordset1_data;
int Recordset1_numRows = 0;
%><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GB2312" />
<title>无标题文件</title>
</head>

<body>
<p align="center"><img src="images/addtitle.jpg" width="644" height="119" /></p>
<form method="post" action="<%=MM_editAction%>" name="form1">
  <table align="center">
    <tr valign="baseline">
      <td nowrap align="right">发布主题</td>
      <td><input type="text" name="newstitle" value="" size="60">
      </td>
    </tr>
    <tr>
      <td nowrap align="right" valign="top">发布内容</td>
      <td valign="baseline"><textarea name="newscontents" cols="50" rows="5"></textarea>
      </td>
    </tr>
    <tr valign="baseline">
      <td nowrap align="right">备注</td>
      <td><input type="text" name="newsmemo" value="无" size="50">
      </td>
    </tr>
    <tr valign="baseline">
      <td nowrap align="right">发布人</td>
      <td><input type="text" name="newsfrom" value="<%=(((Recordset1_data = Recordset1.getObject("ID"))==null || Recordset1.wasNull())?"":Recordset1_data)%>" size="32">
      </td>
    </tr>
    <tr valign="baseline">
      <td nowrap align="right">&nbsp;</td>
      <td><input type="submit" value="插入记录">
      </td>
    </tr>
  </table>
  <input type="hidden" name="MM_insert" value="form1">
</form>
<p>&nbsp;</p>
</body>
</html>
<%
Recordset1.close();
StatementRecordset1.close();
ConnRecordset1.close();
%>