隨筆分類

package com.yang.product.booksonline.dao;

import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.LockMode;
import org.hibernate.criterion.Example;
import org.springframework.context.ApplicationContext;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

/**
* Data access object (DAO) for domain model class Members.
* @see com.yang.product.booksonline.dao.Members
* @author lanxincao
*/
public class MembersDAO extends HibernateDaoSupport {

? private static final Log log = LogFactory.getLog(MembersDAO.class);

???? protected void initDao() {
?????????? //do nothing
???? }
?
? public void save(Members transientInstance) {
??? log.debug("saving Members instance");
??? try {
??????? getHibernateTemplate().saveOrUpdate(transientInstance);
??????? log.debug("save successful");
??? } catch (RuntimeException re) {
??????? log.error("save failed", re);
??????? throw re;
??? }
? }
?
???? public void delete(Members persistentInstance) {
??? log.debug("deleting Members instance");
??? try {
??????? getHibernateTemplate().delete(persistentInstance);
??????? log.debug("delete successful");
??? } catch (RuntimeException re) {
??????? log.error("delete failed", re);
??????? throw re;
??? }
? }
?
? public Members findById( java.lang.Integer id) {
??? log.debug("getting Members instance with id: " + id);
??? try {
??????? Members instance = (Members) getHibernateTemplate()
??????????? .get("com.yang.product.booksonline.dao.Members", id);
??????? return instance;
??? } catch (RuntimeException re) {
??????? log.error("get failed", re);
??????? throw re;
??? }
? }
?
?
? public List findByExample(Members instance) {
??? log.debug("finding Members instance by example");
??? try {
??????? List results = getSession()
??????????? .createCriteria("com.yang.product.booksonline.dao.Members")
??????????? .add(Example.create(instance))
??????? .list();
??????? log.debug("find by example successful, result size: " + results.size());
??????? return results;
??? } catch (RuntimeException re) {
??????? log.error("find by example failed", re);
??????? throw re;
??? }
? }??
?
? public Members merge(Members detachedInstance) {
??? log.debug("merging Members instance");
??? try {
??????? Members result = (Members) getHibernateTemplate()
??????????? .merge(detachedInstance);
??????? log.debug("merge successful");
??????? return result;
??? } catch (RuntimeException re) {
??????? log.error("merge failed", re);
??????? throw re;
??? }
? }

? public void attachDirty(Members instance) {
??? log.debug("attaching dirty Members instance");
??? try {
??????? getHibernateTemplate().saveOrUpdate(instance);
??????? log.debug("attach successful");
??? } catch (RuntimeException re) {
??????? log.error("attach failed", re);
??????? throw re;
??? }
? }
?
? public void attachClean(Members instance) {
??? log.debug("attaching clean Members instance");
??? try {
??????? getHibernateTemplate().lock(instance, LockMode.NONE);
??????? log.debug("attach successful");
??? } catch (RuntimeException re) {
??????? log.error("attach failed", re);
??????? throw re;
??? }
? }
?
? public List findByMembersName(String name){
?????? log.debug("finding by members' name.");
?????? try {
???????????? return getHibernateTemplate().find("from Members as members where members.name = ?"
???????????????????????? ,new String[]{name});
?????? } catch (RuntimeException re) {
???????????? log.error("finding by members' name failed",re);
???????????? throw re;
?????? }
? }

???? public static MembersDAO getFromApplicationContext(ApplicationContext ctx) {
?????? return (MembersDAO) ctx.getBean("MembersDAO");
???? }
}

</form-beans>

<global-exceptions />
<global-forwards />
<action-mappings >
? <action
??? attribute="membersForm"
??? name="membersForm"
??? parameter="action"
??? path="/members"
??? scope="request"
??? type="org.springframework.web.struts.DelegatingActionProxy" >
??? <forward name="loginSuccess" path="/index.jsp" />
??? <forward name="registerSuccess" path="/index.jsp" />
??? <forward name="logoutSuccess" path="/index.jsp" />
? </action>

</action-mappings>

<message-resources parameter="com.yang.product.booksonline.ApplicationResources" />
<plug-in className="org.apache.struts.validator.ValidatorPlugIn">
? <set-property property="pathnames" value="/WEB-INF/validator-rules.xml,/WEB-INF/validation.xml" />
? <set-property property="stopOnFirstError" value="true" />
</plug-in>
<plug-in className="org.springframework.web.struts.ContextLoaderPlugIn">
? <set-property property="contextConfigLocation" value="/WEB-INF/springContext.xml" />
</plug-in>

</struts-config>

package com.yang.product.booksonline.action;

import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.DynaActionForm;
import org.apache.struts.actions.DispatchAction;

import com.yang.product.booksonline.dao.Members;
import com.yang.product.booksonline.dao.MembersDAO;

/**
* XDoclet definition:
* @struts.action path="/members" name="membersForm" parameter="action" scope="request" validate="true"
*/
public class MembersAction extends DispatchAction {
???? private MembersDAO membersDAO;

???? public MembersDAO getMembersDAO() {
?????????? return membersDAO;
???? }

???? public void setMembersDAO(MembersDAO membersDAO) {
?????????? this.membersDAO = membersDAO;
???? }
????
???? public ActionForward login (ActionMapping mapping,ActionForm form,HttpServletRequest request,HttpServletResponse response) {
//??????????? String url = request.getParameter("url");
?????????? String name = (String)((DynaActionForm)form).get("name");
?????????? String password = (String)((DynaActionForm)form).get("password");
?????????? List members = membersDAO.findByMembersName(name);
?????????? if (members != null && members.size() >0) {
???????????????? Members member = (Members)members.get(0);
???????????????? if (password.equals(member.getPassword())) {
?????????????????????? request.getSession().setAttribute("member",name);
?????????????????????? //return new ActionForward(url);
?????????????????????? return mapping.findForward("loginSuccess");
???????????????? } else {
?????????????????????? return null;
???????????????? }
?????????? } else {
???????????????? return null;
?????????? }
???? }

???? public ActionForward logout (ActionMapping mapping,ActionForm form,HttpServletRequest request,HttpServletResponse response) {
?????????? request.getSession().removeAttribute("member");
?????????? return mapping.findForward("logoutSuccess");
???? }

???? public ActionForward register (ActionMapping mapping,ActionForm form,HttpServletRequest request,HttpServletResponse response) {
?????????? String name = (String)((DynaActionForm)form).get("name");
?????????? String password = (String)((DynaActionForm)form).get("password");
?????????? String sex = (String)((DynaActionForm)form).get("sex");
?????????? String mail = (String)((DynaActionForm)form).get("mail");
?????????? List members = membersDAO.findByMembersName(name);
?????????? if (members != null && members.size() >0) {
???????????????? return null;
?????????? } else {
???????????????? Members member = new Members();
???????????????? member.setName(name);
???????????????? member.setPassword(password);
???????????????? member.setSex(sex);
???????????????? member.setMail(mail);
???????????????? membersDAO.save(member);
???????????????? return mapping.findForward("registerSuccess");
?????????? }
???? }
}

注意到，這里使用了dispatchaction。
五，三個jsp部分內容
index.jsp
<body>
<logic:notPresent name="member" scope="session">
???? Welcome,you have not <html:link href="login.jsp">login</html:link>. <br>
</logic:notPresent>
<logic:present name="member" scope="session">
???? Welcome,<bean:write name="member" scope="session"/>.<html:link href="members.do?action=logout">Logout</html:link>
</logic:present>
</body>
login.jsp
<body>
? If you haven't registered the system,please <html:link href="register.jsp">register</html:link>
? <html:form action="/members.do?action=login" method="post" focus="name">
??? <table border="0">
??? <tr>
????? <td><bean:message key="members.form.name.label"/>:</td>
????? <td><html:text property="name" /></td>
??? </tr>
??? <tr>
????? <td><bean:message key="members.form.password.label"/>:</td>
????? <td><html:password property="password" /></td>
??? </tr>
??? <tr>
????? <td colspan="2" align="center"><html:submit><bean:message key="members.form.login.label"/></html:submit></td>
??? </tr>
??? </table>
? </html:form>
</body>
register.jsp
<body>
? Welcome to register the books online. <br>
? <html:form action="/members.do?action=register" method="POST">
? <bean:message key="members.form.name.label"/>:<html:text property="name"/><br>
? <bean:message key="members.form.password.label"/>:<html:password property="password"/><br>
? <bean:message key="members.form.sex.label"/>:
? <html:select property="sex">
?????? <html:option key="members.form.sex.male" value="male" />
?????? <html:option key="members.form.sex.female" value="female" />
? </html:select><br>
? <bean:message key="members.form.mail.label"/>:<html:text property="mail"/><br>
? <html:submit><bean:message key="members.form.register.label"/></html:submit>
? </html:form>
</body>

注意：在開發過程中，本想加上輸入驗證的，因為前面己經有了這方面的例子，為了不重復，這里就有意去掉了這部分，但要運行這個例子，還是你自己加上validation.xml、validator-rules.xml兩個文件，不然會出錯。