基于javaweb+mysql的jsp+servlet在线旅游旅行综合服务平台(java+mysql+jsp+servlet)
运行环境
Java≥8、MySQL≥5.7、Tomcat≥8
开发工具
eclipse/idea/myeclipse/sts等均可配置运行
适用
课程设计，大作业，毕业设计，项目练习，学习演示等
功能说明
Jdk1.8 + Tomcat8.5 + mysql + Eclispe（IntelliJ IDEA,Eclispe,MyEclispe,Sts都支持）
前台用户+后台管理
基于javaweb+mysql的JSP+Servlet在线旅游旅行综合服务平台(java+mysql+jsp+servlet)
if (this.currentPage == 1)
buf.append("首页");
else
buf.append("<a href='").append(this.path).append("¤tPage=1")
.append(parameter)
.append("' class='ls'>").append("首页")
.append("</a>");
// #1157B7
buf.append(" ");
if (this.currentPage > 1) {
buf.append("<a href='").append(this.path).append("¤tPage=")
.append(currentPage - 1).append(parameter).append(
"' class='ls'>").append("上页")
.append("</a>");
} else {
buf.append("上页");
}
buf.append(" ");
int currentSegment = this.currentPage % segment == 0 ? this.currentPage
/ segment : this.currentPage / segment + 1;
/*for (int i = 1; i <= this.pageNumber; i++) {
if (this.currentPage == i)
buf.append("<font color='red'>").append(i).append("</font>");
else
buf.append("<a href='").append(this.path).append(
"¤tPage=").append(i).append(parameter).append(
"' class='ls'>[").append(i).append(
"]</a>");
}*/
buf.append(" ");
if (this.currentPage < this.pageNumber) {
buf.append("<a href='").append(this.path).append("¤tPage=")
.append(currentPage + 1).append(parameter).append(
"' class='ls'>").append("下页")
.append("</a>");
} else {
buf.append("下页");
}
buf.append(" ");
if (this.currentPage == this.pageNumber)
buf.append("末页 ");
else
buf.append("<a href='").append(this.path).append("¤tPage=")
.append(this.pageNumber).append(parameter).append(
"' class='ls'>").append("末页")
source=sub1+sub2;
}
//System.out.println(start+" "+end);
}
return source;
}
public static void delPic(String path,String img)
{
if(img!=null)
{
if(!img.equals(""))
{
File file1=new File(path + "/" + img);
if(file1.exists() ) {
file1.deleteOnExit();
// file1.delete();
}}}
}
}
String optionstr = "'";
for(String str:zdname.split(";"))
{
if(str.indexOf("~")>-1){
String zdstr = str.split("~")[0];
String zdnamestr = str.split("~")[1].equals("无名")?"":(str.split("~")[1]+":");
optionstr+=zdnamestr+permap.get(zdstr)+" - ";
}else{
optionstr+=permap.get(str);
}
}
if(optionstr.length()>0)optionstr=optionstr.substring(0,optionstr.length()-3);
optionstr+="',";
checkbox+= optionstr;
}
if(checkbox.length()>0)checkbox=checkbox.substring(0,checkbox.length()-1);
return checkbox;
}
public static String getcheckboxDk(String name,String tablename,String zdname,String nstr,String where)
{
String checkbox="";
int i=0;
for(HashMap permap:new CommDAO().select("select * from "+tablename+" where "+where+" order by id desc")){
String optionstr = "";
for(String str:zdname.split(";"))
{
String zdstr = str.split("~")[0];
String zdnamestr = str.split("~")[1].equals("无名")?"":(str.split("~")[1]+":");
optionstr+=zdnamestr+permap.get(zdstr)+" - ";
}
if(optionstr.length()>0)optionstr=optionstr.substring(0,optionstr.length()-3);
String nbs = "";
if(i>0)nbs=" ";
checkbox+="<label>"+nbs+"<input type='checkbox' name='"+name+"' value=\""+optionstr+"\">"+optionstr+"</label> \n";
checkbox+="<label> - "+nstr+" <input type='text' size='5' name='"+optionstr+"' value=\"\"></label><br />\n";
i++;
}
checkbox+="<input type=hidden name='"+name+"' value='' /><input type=hidden name='dk-"+name+"-value' value='"+nstr+"' />";
return checkbox;
}
public static String getFileUpInfo()
{
String jscode = "";
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
this.doPost(request, response);
}
/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
StringBuffer sb = new StringBuffer(50);
response.setContentType("application/x-msdownload;charset=UTF-8");
try {
response.setHeader("Content-Disposition", new String(sb.toString()
.getBytes(), "ISO8859-1"));
} catch (UnsupportedEncodingException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
String filename = request.getParameter("filename");
if (request.getHeader("User-Agent").toLowerCase().indexOf("firefox") > 0){
try {
filename = new String(filename.getBytes("UTF-8"), "ISO8859-1");
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
factory.setRepository(new File(request.getRealPath("/upfile/")+"/"));
ServletFileUpload upload = new ServletFileUpload(factory);
upload.setSizeMax(100*1024*1024);
List items = new ArrayList();
items = upload.parseRequest(request);
FileItem fileItem = (FileItem) items.get(0);
if(fileItem.getName()!=null && fileItem.getSize()!=0)
{
if(fileItem.getName()!=null && fileItem.getSize()!=0){
File fullFile = new File(fileItem.getName());
filename = Info.generalFileName(fullFile.getName());
File newFile = new File(request.getRealPath("/upfile/")+"/" + filename);
try {
fileItem.write(newFile);
} catch (Exception e) {
e.printStackTrace();
}
}else{
}
}
}
go("/js/uploadimg3.jsp?filename="+filename, request, response);
} catch (Exception e1) {
e1.printStackTrace();
}
}
if(ac.equals("uploadimg4"))
{
try {
String filename="";
request.setCharacterEncoding("UTF-8");
RequestContext requestContext = new ServletRequestContext(request);
if(FileUpload.isMultipartContent(requestContext)){
DiskFileItemFactory factory = new DiskFileItemFactory();
factory.setRepository(new File(request.getRealPath("/upfile/")+"/"));
ServletFileUpload upload = new ServletFileUpload(factory);
upload.setSizeMax(100*1024*1024);
List items = new ArrayList();
items = upload.parseRequest(request);
String filename="";
request.setCharacterEncoding("UTF-8");
RequestContext requestContext = new ServletRequestContext(request);
if(FileUpload.isMultipartContent(requestContext)){
DiskFileItemFactory factory = new DiskFileItemFactory();
factory.setRepository(new File(request.getRealPath("/upfile/")+"/"));
ServletFileUpload upload = new ServletFileUpload(factory);
upload.setSizeMax(100*1024*1024);
List items = new ArrayList();
items = upload.parseRequest(request);
FileItem fileItem = (FileItem) items.get(0);
if(fileItem.getName()!=null && fileItem.getSize()!=0)
{
if(fileItem.getName()!=null && fileItem.getSize()!=0){
File fullFile = new File(fileItem.getName());
filename = Info.generalFileName(fullFile.getName());
File newFile = new File(request.getRealPath("/upfile/")+"/" + filename);
try {
fileItem.write(newFile);
} catch (Exception e) {
e.printStackTrace();
}
}else{
}
}
}
go("/js/uploadimg2.jsp?filename="+filename, request, response);
} catch (Exception e1) {
e1.printStackTrace();
}
}
if(ac.equals("uploadimg3"))
{
try {
String filename="";
request.setCharacterEncoding("UTF-8");
RequestContext requestContext = new ServletRequestContext(request);
if(FileUpload.isMultipartContent(requestContext)){
DiskFileItemFactory factory = new DiskFileItemFactory();
factory.setRepository(new File(request.getRealPath("/upfile/")+"/"));
ServletFileUpload upload = new ServletFileUpload(factory);
public class CommDAO {
public static String dbname = "";
public static String dbtype = "";
public static Connection conn = null;
public CommDAO() {
conn = this.getConn();
}
//给字段做加减法
public void jiajian(String tablename, String colname, String id, String num) {
HashMap map = this.getmap(id, tablename);
String value = map.get(colname).toString();
if (value.equals("")) value = "0";
int i = Integer.parseInt(value);
int j = Integer.parseInt(num);
commOper("update " + tablename + " set " + colname + " = " + (i + j) + " where id=" + id);
}
// 该方法返回一个table 用于流动图片
public String DynamicImage(String categoryid, int cut, int width, int height) {
StringBuffer imgStr = new StringBuffer();
StringBuffer thePics1 = new StringBuffer();
StringBuffer theLinks1 = new StringBuffer();
StringBuffer theTexts1 = new StringBuffer();
imgStr.append("<div id=picViwer1 style='background-color: #ffffff' align=center></div><SCRIPT src='js/dynamicImage.js' type=text/javascript></SCRIPT>\n<script language=JavaScript>\n");
thePics1.append("var thePics1=\n'");
theLinks1.append("var theLinks1='");
theTexts1.append("var theTexts1='");
List<HashMap> co = this.select("select * from xinwentongzhi where shouyetupian<>'' and shouyetupian<>'null' and shouyetupian like '%.jpg' order by id desc", 1, 6);
int i = co.size();
int j = 0;
for (HashMap b : co) {
j++;
int id = Integer.parseInt(b.get("id").toString());
String title = Info.subStr(b.get("biaoti").toString(), 21);
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
this.doPost(request, response);
}
/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
StringBuffer sb = new StringBuffer(50);
response.setContentType("application/x-msdownload;charset=UTF-8");
try {
response.setHeader("Content-Disposition", new String(sb.toString()
.getBytes(), "ISO8859-1"));
} catch (UnsupportedEncodingException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
String filename = request.getParameter("filename");
if (request.getHeader("User-Agent").toLowerCase().indexOf("firefox") > 0){
try {
if (j == i) {
thePics1.append(url.replaceAll("\n", ""));
theLinks1.append("gg_detail.jsp?id=" + b.get("id"));
theTexts1.append(title);
}
}
thePics1.append("';");
theLinks1.append("';");
theTexts1.append("';");
imgStr.append(thePics1 + "\n");
imgStr.append(theLinks1 + "\n");
imgStr.append(theTexts1 + "\n");
imgStr.append("\n setPic(thePics1,theLinks1,theTexts1," + width + "," + height + ",'picViwer1');</script>");
return imgStr.toString();
}
public HashMap getmap(String id, String table) {
List<HashMap> list = new ArrayList();
try {
Statement st = conn.createStatement();
//System.out.println("select * from "+table+" where id="+id);
ResultSet rs = st.executeQuery("select * from " + table + " where id=" + id);
ResultSetMetaData rsmd = rs.getMetaData();
while (rs.next()) {
HashMap map = new HashMap();
int i = rsmd.getColumnCount();
for (int j = 1; j <= i; j++) {
if (!rsmd.getColumnName(j).equals("ID")) {
String str = rs.getString(j) == null ? "" : rs.getString(j);
if (str.equals("null")) str = "";
map.put(rsmd.getColumnName(j), str);
} else
map.put("id", rs.getString(j));
}
list.add(map);
}
rs.close();
st.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return list.get(0);
}
public HashMap getmaps(String nzd, String zdz, String table) {
List<HashMap> list = new ArrayList();
try {
Statement st = conn.createStatement();
Statement st = conn.createStatement();
for (String str : collist) {
if (names.indexOf("," + str + ",") > -1) {
String[] values = request.getParameterValues(str);
String value = "";
for (String vstr : values) {
if (vstr == null) vstr = "";
if (vstr.equals("null")) vstr = "";
if (vstr.trim().equals("")) continue;
if (request.getParameter(vstr) != null && !"".equals(request.getParameter(vstr)) && request.getParameter("dk-" + str + "-value") != null) {
String dkv = request.getParameter(vstr);
String dknamevalue = request.getParameter("dk-" + str + "-value");
vstr += " - " + dknamevalue + ":" + dkv;
}
value += vstr + " ~ ";
}
if (value == null) value = "";
if (value.equals("null")) value = "";
if (value.length() > 0) value = value.substring(0, value.length() - 3);
if (typemap.get(str + "---").equals("int")) {
sql += (value.equals("") ? -10 : value) + ",";
} else {
sql += "'" + (value.equals("null") ? "" : value) + "',";
}
} else {
if (typemap.get(str + "---").equals("int")) {
sql += (extmap.get(str) == null ? "" : extmap.get(str)) + ",";
} else {
sql += "'" + (extmap.get(str) == null ? "" : extmap.get(str)) + "',";
}
}
}
sql = sql.substring(0, sql.length() - 1) + ")";
System.out.println(sql);
this.commOper(sql);
st.close();
} catch (SQLException e) {
e.printStackTrace();
}
String str = "";
if (!reflush)
str += "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\"> \n";
str += "<script language=javascript>\n";
try {
fileItem.write(newFile);
} catch (Exception e) {
e.printStackTrace();
}
}else{
}
}
}
go("/js/uploaddoc3.jsp?docname="+filename, request, response);
} catch (Exception e1) {
e1.printStackTrace();
}
}
//导excel
if(ac.equals("importexcel"))
{
String page = request.getParameter("page");
String whzdstr = request.getParameter("whzdstr");
String tablename = request.getParameter("tablename");
try {
String filename="";
request.setCharacterEncoding("UTF-8");
RequestContext requestContext = new ServletRequestContext(request);
if(FileUpload.isMultipartContent(requestContext)){
DiskFileItemFactory factory = new DiskFileItemFactory();
factory.setRepository(new File(request.getRealPath("/upfile/")+"/"));
ServletFileUpload upload = new ServletFileUpload(factory);
upload.setSizeMax(100*1024*1024);
List items = new ArrayList();
items = upload.parseRequest(request);
FileItem fileItem = (FileItem) items.get(0);
if(fileItem.getName()!=null && fileItem.getSize()!=0)
{
if(fileItem.getName()!=null && fileItem.getSize()!=0){
File fullFile = new File(fileItem.getName());
items = upload.parseRequest(request);
FileItem fileItem = (FileItem) items.get(0);
if(fileItem.getName()!=null && fileItem.getSize()!=0)
{
if(fileItem.getName()!=null && fileItem.getSize()!=0){
File fullFile = new File(fileItem.getName());
filename = Info.generalFileName(fullFile.getName());
File newFile = new File(request.getRealPath("/upfile/")+"/" + filename);
try {
fileItem.write(newFile);
} catch (Exception e) {
e.printStackTrace();
}
}else{
}
}
}
go("/js/uploaddoc3.jsp?docname="+filename, request, response);
} catch (Exception e1) {
e1.printStackTrace();
}
}
//导excel
if(ac.equals("importexcel"))
{
String page = request.getParameter("page");
String whzdstr = request.getParameter("whzdstr");
String tablename = request.getParameter("tablename");
try {
String filename="";
request.setCharacterEncoding("UTF-8");
RequestContext requestContext = new ServletRequestContext(request);
if(FileUpload.isMultipartContent(requestContext)){
DiskFileItemFactory factory = new DiskFileItemFactory();
factory.setRepository(new File(request.getRealPath("/upfile/")+"/"));
ServletFileUpload upload = new ServletFileUpload(factory);
upload.setSizeMax(100*1024*1024);
List items = new ArrayList();
items = upload.parseRequest(request);
FileItem fileItem = (FileItem) items.get(0);
if(fileItem.getName()!=null && fileItem.getSize()!=0)
{
if(fileItem.getName()!=null && fileItem.getSize()!=0){
String checkbox="";
for(HashMap permap:new CommDAO().select("select * from "+tablename+" where "+where+" order by id desc")){
String optionstr = "'";
for(String str:zdname.split(";"))
{
if(str.indexOf("~")>-1){
String zdstr = str.split("~")[0];
String zdnamestr = str.split("~")[1].equals("无名")?"":(str.split("~")[1]+":");
optionstr+=zdnamestr+permap.get(zdstr)+" - ";
}else{
optionstr+=permap.get(str);
}
}
if(optionstr.length()>0)optionstr=optionstr.substring(0,optionstr.length()-3);
optionstr+="',";
checkbox+= optionstr;
}
if(checkbox.length()>0)checkbox=checkbox.substring(0,checkbox.length()-1);
return checkbox;
}
public static String getcheckboxDk(String name,String tablename,String zdname,String nstr,String where)
{
String checkbox="";
int i=0;
for(HashMap permap:new CommDAO().select("select * from "+tablename+" where "+where+" order by id desc")){
String optionstr = "";
for(String str:zdname.split(";"))
{
String zdstr = str.split("~")[0];
String zdnamestr = str.split("~")[1].equals("无名")?"":(str.split("~")[1]+":");
optionstr+=zdnamestr+permap.get(zdstr)+" - ";
}
if(optionstr.length()>0)optionstr=optionstr.substring(0,optionstr.length()-3);
String nbs = "";
if(i>0)nbs=" ";
checkbox+="<label>"+nbs+"<input type='checkbox' name='"+name+"' value=\""+optionstr+"\">"+optionstr+"</label> \n";
checkbox+="<label> - "+nstr+" <input type='text' size='5' name='"+optionstr+"' value=\"\"></label><br />\n";
i++;
}
checkbox+="<input type=hidden name='"+name+"' value='' /><input type=hidden name='dk-"+name+"-value' value='"+nstr+"' />";
// 当前页数
protected int currentPage;
// 一页长度
protected int pageSize;
// 总页数
protected long pageNumber;
// 总记录数
protected long count;
// 数据
protected Collection collection;
// 数据查询对象
protected CommDAO dao = new CommDAO();
// 表现层代码
protected String info;
// 请求路径
protected String path;
// 服务器请求对象
protected HttpServletRequest request;
/*
* 仅仅只是加到路径中去
*/
protected String parameter = "";
/**
*
* @param 下一页的分页链接
* @param 一页最大记录数
* @param 当前HttpServletRequest对象
* @param 数据库操作对象
*/
protected PageManager(String path, int pageSize, HttpServletRequest request) {
// 任意一个dao都行
this.currentPage = 1;
}
return sesuu.substring(0,10);
}
/**
* 计算两个时期之间的天数
*
*/
public static int dayToday(String DATE1, String DATE2) {
int i = 0;
if(DATE1.indexOf(" ")>-1)
DATE1 = DATE1.substring(0,DATE1.indexOf(" "));
if(DATE2.indexOf(" ")>-1)
DATE2 = DATE2.substring(0,DATE2.indexOf(" "));
String[] d1 = DATE1.split("-");
if(d1[1].length()==1)
{
DATE1 = d1[0]+"-0"+d1[1];
}else{
DATE1 = d1[0]+"-"+d1[1];
}
if(d1[2].length()==1)
{
DATE1 = DATE1+"-0"+d1[2];
}else{
DATE1 = DATE1+"-"+d1[2];
}
String[] d2 = DATE2.split("-");
if(d2[1].length()==1)
{
DATE2 = d2[0]+"-0"+d2[1];
}else{
DATE2 = d2[0]+"-"+d2[1];
}
if(d2[2].length()==1)
{
DATE2 = DATE2+"-0"+d2[2];
jscode+=" }\n";
jscode+=" }\n";
jscode+=" }\n";
jscode+=" if(radios.type=='select'){\n";
jscode+=" "+formname+"."+str1+".value=\""+str2+"\";\n";
jscode+=" }\n";
jscode+=" }else{\n";
jscode+=" if("+formname+"."+str1+")\n";
jscode+="{\n";
jscode+=""+formname+"."+str1+".value=\""+str2+"\";\n";
jscode+="}\n";
jscode+="}\n";
jscode+="if(document.getElementById(\"txt\"))\n";
jscode+="{\n";
jscode+="document.getElementById(\"txt\").src=\"upfile/"+map.get("filename")+"\";\n";
jscode+="}\n";
jscode+="if(document.getElementById(\"txt2\"))\n";
jscode+="{\n";
jscode+="document.getElementById(\"txt2\").src=\"upfile/"+map.get("filename2")+"\";\n";
jscode+="}\n";
jscode+="if(document.getElementById(\"txt3\"))\n";
jscode+="{\n";
jscode+="document.getElementById(\"txt3\").src=\"upfile/"+map.get("filename3")+"\";\n";
jscode+="}\n";
jscode+="if(document.getElementById(\"txt4\"))\n";
jscode+="{\n";
jscode+="document.getElementById(\"txt4\").src=\"upfile/"+map.get("filename4")+"\";\n";
jscode+="}\n";
jscode+="if(document.getElementById(\"txt5\"))\n";
jscode+="{\n";
jscode+="document.getElementById(\"txt5\").src=\"upfile/"+map.get("filename5")+"\";\n";
jscode+="}\n";
if(FileUpload.isMultipartContent(requestContext)){
DiskFileItemFactory factory = new DiskFileItemFactory();
factory.setRepository(new File(request.getRealPath("/upfile/")+"/"));
ServletFileUpload upload = new ServletFileUpload(factory);
upload.setSizeMax(100*1024*1024);
List items = new ArrayList();
items = upload.parseRequest(request);
FileItem fileItem = (FileItem) items.get(0);
if(fileItem.getName()!=null && fileItem.getSize()!=0)
{
if(fileItem.getName()!=null && fileItem.getSize()!=0){
File fullFile = new File(fileItem.getName());
filename = Info.generalFileName(fullFile.getName());
File newFile = new File(request.getRealPath("/upfile/")+"/" + filename);
try {
fileItem.write(newFile);
} catch (Exception e) {
e.printStackTrace();
}
}else{
}
}
}
go("/js/uploaddoc.jsp?docname="+filename, request, response);
} catch (Exception e1) {
e1.printStackTrace();
}
}
if(ac.equals("uploaddoc2"))
{
try {
String filename="";
request.setCharacterEncoding("UTF-8");
RequestContext requestContext = new ServletRequestContext(request);
if(FileUpload.isMultipartContent(requestContext)){
DiskFileItemFactory factory = new DiskFileItemFactory();
factory.setRepository(new File(request.getRealPath("/upfile/")+"/"));
ServletFileUpload upload = new ServletFileUpload(factory);
upload.setSizeMax(100*1024*1024);
} else {
str += "window.location=String(window.location).replace(new RegExp('f=f', 'g'), '');";
}
} else {
str += "location.href='" + tzurl + "';\n";
}
str += "</script>\n";
PrintWriter wrt = null;
try {
//request.get
wrt = response.getWriter();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
wrt.write(str);
}
return "";
}
public Connection getConn() {
try {
if (conn == null || conn.isClosed()) {
Class.forName("com.mysql.jdbc.Driver");
conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/project?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=Asia/Shanghai&autoReconnect=true&failOverReadOnly=false&allowPublicKeyRetrieval=true&allowMultiQueries=true&zeroDateTimeBehavior=convertToNull",
"root", "123456");
}
} catch (Exception e) {
e.printStackTrace();
}
return conn;
}
public int getInt(String sql) {
int i = 0;
try {
Statement st = conn.createStatement();
ResultSet rs = st.executeQuery(sql);
if (rs.next()) {
i = rs.getInt(1);
}
st.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
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