我的SSH项目之旅(4.用户登陆及密码操作)
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如果出现mysql乱码问题 修改my.ini两处红色的地方gb2312 [client] 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 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.getInp
utForward(); }
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>
<center>
<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>
<h1>用户登陆</h1>
<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>
<input type="hidden" name="status" value="login">
<input type="hidden" name="type" value="2">
<html:submit value="登陆"></html:submit>
<html:reset value="重置"></html:reset><br>
<a href="register.jsp">注册用户？</a>
<a href="forgetpwd.jsp">忘记密码？</a>
</html:form>
</center>
</body> // 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; 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();
} 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 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");
} <h2>忘记密码</h2>
<%-- 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 ac
tion ="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>
<input type="hidden" name="status" value="forget"><br>
<input type="hidden" name="type" value="3"><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
<script language="javaScript">
document.userForm.checkcode.value = "" ;
</script> <logic:present name="flag" scope="request">
<logic:equal value="true" name="flag" scope="request">
<h2>更新密码</h2>
<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>
<input type="hidden" name="status" value="updatepwd">
<input type="hidden"
<input type="hidden" name="userid" value="${param.userid}">
<html:submit value="更新"></html:submit>
<html:reset value="重置"></html:reset><br>
<a href="login.jsp">用户登陆？</a>
<a href="register.jsp">用户注册？</a>
</html:form>
<script language="javaScript">
document.userForm.checkcode.value = "" ;
</script>
</logic:equal>
</logic:present> index.jsp <logic:present name="userid" scope="session">
欢迎${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">
<a href="${param.image}login.jsp">
src="${param.url}images/banner_ico05.jpg" alt="我要登录" border="0">
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