我的SSH项目之旅(4.用户登陆及密码操作)

fantlam

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SSH组合

SSH JSP MySQL HTML JavaScript

如果出现mysql乱码问题修改my.ini两处红色的地方gb2312

[client]

port=3306

[mysql]

default-character-set=gb2312

# SERVER SECTION

# ----------------------------------------------------------------------

#

# The following options will be read by the MySQL Server. Make sure that

# you have installed the server correctly (see above) so it reads this

# file.

#

[mysqld]

# The TCP/IP Port the MySQL Server will listen on

port=3306

#Path to installation directory. All paths are usually resolved relative to this.

basedir="E:/compiler/mysql/"

#Path to the database root

datadir="E:/compiler/mysql/Data/"

# The default character set that will be used when a new schema or table is

# created and no character set is defined

default-character-set=gb2312

登陆模块

可以仿照注册模块，所以问题不多，出现的错误主要都是页面呈现不出，也就是struts标签的错误，一点小差错就会导致页面呈现不出，我想也只能对照正确的页面看自己到底有什么写错了

UserDAOImpl.java

 public boolean login(User user) throws Exception {

    // TODO Auto-generated method stub

    boolean flag=false;

    String hql="from User as u where u.userid=? and u.userpwd=?";

    Query q=super.getSession().createQuery(hql);

    q.setString(0, user.getUserid());

    q.setString(1, user.getUserpwd());

    List l=q.list();

    if(l.size()>0){

      flag=true;

      User u=(User)l.get(0);

      user.setGrade(u.getGrade());取得等级

      

    }

    return flag;

  }

UserAction.java

public ActionForward login(ActionMapping mapping, ActionForm form,

      HttpServletRequest request, HttpServletResponse response) {

    UserForm userForm = (UserForm) form;// TODO Auto-generated method stub

// 首先还是验证输入验证码是否正确

  String ccode = (String) request.getSession().getAttribute("ccode");

  String checkcode = userForm.getCheckcode();

  if (!(ccode.equals(checkcode))) {

      ActionMessages errors = new ActionMessages();

      errors.add("ccode", new ActionMessage("checkcode.error"));

      super.saveErrors(request, errors);

      return mapping.getInputForward();

    }

    User user=new User();

    MD5Code mc = new MD5Code();

    user.setUserid(userForm.getUserid());

    user.setUserpwd(mc.getMD5ofStr(userForm.getUserpwd()));

  boolean flag=false;

  try {

  flag=this.userdao.login(user);

  if(flag){

  request.getSession().setAttribute("userid", user.getUserid());

  request.getSession().setAttribute("grade", user.getGrade());

  return mapping.findForward("loginsuc");

  }else{

  request.setAttribute("flag", "error");

  return mapping.findForward("loginfail");

  }

    } catch (Exception e) {

      // TODO Auto-generated catch block

      e.printStackTrace();

      return mapping.findForward("loginfail");

      

    }

  }

<body>

<jsp:include flush="true" page="../inc/template.html"/>

<logic:present name="flag" scope="request">

<logic:equal value="error" name="flag" scope="request">

<h2>登陆失败，错误的用户名或密码</h2>

</logic:equal>

</logic:present>

<html:form action="jsp/user.do" method="post">

用户ID：<html:text property="userid"></html:text><br>

登陆密码:<html:password property="userpwd"></html:password><br>

验证码：<html:text property="checkcode"></html:text><img src="image.jsp"><br>

<html:submit value="登陆"></html:submit>

<html:reset value="重置"></html:reset><br>

</html:form>

</center>

</body>

接下来是找回密码和更新密码模块

UserDAO.java接口

// 找回密码允许用户修改密码

public void updatepwd(String userid,String userpwd) throws Exception;

// 根据提示问题答案用户ID 确认用户是否存在

public boolean isExists(String userid, String userques, String userans)

throws Exception;

UserDAOImpl.java 实现这样两个方法

public boolean isExists(String userid, String userques, String userans)

throws Exception {

// TODO Auto-generated method stub

boolean flag = false;

String hql = "from User as u where u.userid=? and u.userques=? and u.userans=?";

Query q = super.getSession().createQuery(hql);

q.setString(0, userid);

q.setString(1, userques);

q.setString(2, userans);

List l=q.list();

if(l.size()>0){

flag=true;

}

return flag;

}

public void updatepwd(String userid,String userpwd) throws Exception {

// TODO Auto-generated method stub

String hql="update User set userpwd=? where userid=?";

Query q=super.getSession().createQuery(hql);

q.setString(0, userpwd);

q.setString(1, userid);

q.executeUpdate();

}

UserAction.java

public ActionForward forget(ActionMapping mapping, ActionForm form,

HttpServletRequest request, HttpServletResponse response) {

UserForm userForm = (UserForm) form;// TODO Auto-generated method stub

boolean flag = false;

try {

flag = this.userdao.isExists(userForm.getUserid(), userForm

.getUserques(), userForm.getUserans());

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

if(flag){

//设置一个flag值保存在request范围让jsp页面做判断输出应有的信
request.setAttribute("flag", "true");

return mapping.findForward("exist");

}else{

request.setAttribute("flag", "false");

return mapping.findForward("notexist");

}

public ActionForward updatepwd(ActionMapping mapping, ActionForm form,

HttpServletRequest request, HttpServletResponse response) {

UserForm userForm = (UserForm) form;// TODO Auto-generated method stub

MD5Code m=new MD5Code();

String userid=userForm.getUserid();

String userpwd=m.getMD5ofStr(userForm.getUserpwd());

try {

this.userdao.updatepwd(userid, userpwd);

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

return mapping.findForward("updatepwddo");

}

forgetpwd.jsp

<%-- 用户不存在或问题或答案错误--%>

<logic:present name="flag" scope="request">

<logic:equal value="false" name="flag">

<h3>用户不存在或问题或答案错误</h3>

</logic:equal>

</logic:present>

<html:form action="jsp/user.do" method="post">

用户ID：<html:text property="userid"></html:text><br>

找回密码提示问题：<html:text property="userques"></html:text><br>

找回密码答案：<html:text property="userans"></html:text><br>

验证码:<html:text property="checkcode"></html:text><img src="image.jsp"><br>

<html:submit value="找回密码"></html:submit>

<html:reset value="重置"></html:reset>

</html:form>

加入这段javascript脚本可以让验证码在返回的时候留空

document.userForm.checkcode.value = "" ;

</script>

Updatepwd.jsp

<logic:present name="flag" scope="request">

<logic:equal value="true" name="flag" scope="request">

<html:form action="jsp/user.do">

新的密码:<html:password property="userpwd"></html:password><br>

确认密码:<html:password property="confirmpwd"></html:password><br>

验证码：<html:text property="checkcode"></html:text><img src="image.jsp"><br>

<html:submit value="更新"></html:submit>

<html:reset value="重置"></html:reset><br>

</html:form>

document.userForm.checkcode.value = "" ;

</script>

</logic:equal>

</logic:present>

欢迎fantlam光临头衔：开发爱好者

index.jsp

<logic:present name="userid" scope="session">

欢迎${userid}光临

头衔：<%=IntegralGrade.getInstance().getGradeInfo((Integer)session.getAttribute("grade")) %>

</logic:present>

IntegralGrade类就不写了

往下层目录建立JSP页面的时候出现路径问题

<jsp:include flush="true" page="../../inc/template.jsp">

<jsp:param name="url" value="../../" />

通过传参方式让不同层次目录的JSP根据自己的情况找到模板上制定的路径

<jsp:param name="image" value="../"/>

</jsp:include>

template.jsp中相关代码

<img src="${param.url}images/banner_logo.gif" alt="fantlam"

src="${param.url}images/banner_ico06.jpg" alt="我要提问" border="0">

src="${param.url}images/banner_ico05.jpg" alt="我要登录" border="0">
login.jsp 依然利用模板建立

<body>

<jsp:include flush="true" page="../inc/template.html"/>

<logic:present name="flag" scope="request">

<logic:equal value="error" name="flag" scope="request">

<h2>登陆失败，错误的用户名或密码</h2>

</logic:equal>

</logic:present>

<html:form action="jsp/user.do" method="post">

用户ID：<html:text property="userid"></html:text><br>

登陆密码:<html:password property="userpwd"></html:password><br>

验证码：<html:text property="checkcode"></html:text><img src="image.jsp"><br>

<html:submit value="登陆"></html:submit>

<html:reset value="重置"></html:reset><br>

</html:form>

</center>

</body>

接下来是找回密码和更新密码模块

UserDAO.java接口

// 找回密码允许用户修改密码

public void updatepwd(String userid,String userpwd) throws Exception;

// 根据提示问题答案用户ID 确认用户是否存在

public boolean isExists(String userid, String userques, String userans)

throws Exception;

UserDAOImpl.java 实现这样两个方法

public boolean isExists(String userid, String userques, String userans)

throws Exception {

// TODO Auto-generated method stub

boolean flag = false;

String hql = "from User as u where u.userid=? and u.userques=? and u.userans=?";

Query q = super.getSession().createQuery(hql);

q.setString(0, userid);

q.setString(1, userques);

q.setString(2, userans);

List l=q.list();

if(l.size()>0){

flag=true;

}

return flag;

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我的SSH项目之旅(5.提问回复功能) | 我的SSH项目之旅(3.用户注册--后台)

2008-08-29 09:52
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