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[導入][AppFuse] AppFuse使用手記－－DAO（七） [原]

    AppFuse生成的Action的提供了幾個基本的CRUD方法。先看一下這幾個方法的實現(xiàn)。

    Actioni通過Spring注入GenericManager，而GenericManager的實現(xiàn)GenericManagerImpl則調用GenericDao完成DAO操作。Appfuse默認為Hibernate進行DAO操作，GenericManagerImpl的實現(xiàn)類為GenericDaoHibernate，而GenericDaoHibernate里面還是調用的Spring的HibernateTemplate實現(xiàn)DAO操作。

    UML圖如下（點擊顯示大圖）：

    通常AppFuse提供的幾個操作是遠遠不夠的，如果我們需要完成自定義的功能則需要自己實現(xiàn)相應的DAO操作。可以參考Appfuse的實現(xiàn)（參考Using Hibernate）。增加一個DAO類繼承GenericDao，增加一個DAO實現(xiàn)類繼承GenericDaoHibernate實現(xiàn)DAO類。

    UML圖如下（點擊顯示大圖）：

    在applicationContext.xml里聲明DAO。然后在Action通過注入DAO，完成相應的Action操作。

    相關試例代碼的主要部分如下：
    CompanyDao：

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package com.reda.app.dao;
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import com.reda.app.model.Company;
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import org.appfuse.dao.GenericDao;
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import java.util.List;
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public interface CompanyDao extends GenericDao<Company, Long> {
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public List find(Company company);
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}
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CompanyDaoHibernate：

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package com.reda.app.dao.hibernate;
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import com.reda.app.model.Company;
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import com.reda.app.dao.CompanyDao;
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import org.appfuse.dao.hibernate.GenericDaoHibernate;
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import java.util.List;
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public class CompanyDaoHibernate extends GenericDaoHibernate<Company, Long> implements CompanyDao {
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public CompanyDaoHibernate() {
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super(Company.class);
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}
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public List find(Company company) {
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return super.getHibernateTemplate().find("from Company where companyType=?", company.getCompanyType());
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}
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}

applicationContext.xml：

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<bean id="companyDao" class="com.reda.app.dao.hibernate.CompanyDaoHibernate">
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<property name="sessionFactory" ref="sessionFactory"/>
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</bean>

struts.xml：

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<action name="companies" class="com.reda.app.webapp.action.CompanyAction" method="list">
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<result>/WEB-INF/pages/companyList.jsp</result>
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</action>
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<action name="editCompany" class="com.reda.app.webapp.action.CompanyAction" method="edit">
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<result>/WEB-INF/pages/companyForm.jsp</result>
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<result name="error">/WEB-INF/pages/companyList.jsp</result>
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</action>
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<action name="saveCompany" class="com.reda.app.webapp.action.CompanyAction" method="save">
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<result name="input">/WEB-INF/pages/companyForm.jsp</result>
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<result name="cancel" type="redirect">companies.html</result>
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<result name="delete" type="redirect">companies.html</result>
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<result name="success" type="redirect">companies.html</result>
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</action>
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<action name="searchCompany" class="com.reda.app.webapp.action.CompanyAction" method="search">
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<result name="input">/WEB-INF/pages/companyList.jsp</result>
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<result>/WEB-INF/pages/companyList.jsp</result>
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</action>
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CompanyAction：

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package com.reda.app.webapp.action;
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import com.opensymphony.xwork2.Preparable;
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import com.reda.app.model.Company;
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import com.reda.app.model.CompanyType;
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import com.reda.app.dao.hibernate.CompanyDaoHibernate;
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import org.appfuse.service.GenericManager;
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import org.appfuse.webapp.action.BaseAction;
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import java.util.List;
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public class CompanyAction extends BaseAction implements Preparable {
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private GenericManager<Company, Long> companyManager;
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private GenericManager<CompanyType, Long> companyTypeManager;
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private List companies;
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private Company company;
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private Long companyId;
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private CompanyDaoHibernate companyDao;
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public void setCompanyManager(GenericManager<Company, Long> companyManager) {
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this.companyManager = companyManager;
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}
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public void setCompanyTypeManager(GenericManager<CompanyType, Long> companyTypeManager) {
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this.companyTypeManager = companyTypeManager;
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}
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public List getCompanies() {
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return companies;
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}
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public void setCompanyDao(CompanyDaoHibernate companyDao) {
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this.companyDao = companyDao;
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}
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public String search() {
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companies = companyDao.find(company);
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return SUCCESS;
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}
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public List getCompanyTypeList() {
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return companyTypeManager.getAll();
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}
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/**
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* Grab the entity from the database before populating with request parameters
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*/
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public void prepare() {
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if (getRequest().getMethod().equalsIgnoreCase("post")) {
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// prevent failures on new
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String companyId = getRequest().getParameter("company.companyId");
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// if (companyId != null && !companyId.equals("")) {
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// company = companyManager.get(new Long(companyId));
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// }
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}
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}
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public String list() {
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companies = companyManager.getAll();
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return SUCCESS;
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}
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public void setCompanyId(Long companyId) {
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this.companyId = companyId;
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}
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public Company getCompany() {
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return company;
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}
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public void setCompany(Company company) {
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this.company = company;
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}
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public String delete() {
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companyManager.remove(company.getCompanyId());
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saveMessage(getText("company.deleted"));
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return SUCCESS;
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}
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public String edit() {
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if (companyId != null) {
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company = companyManager.get(companyId);
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} else {
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company = new Company();
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}
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return SUCCESS;
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}
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public String save() throws Exception {
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if (cancel != null) {
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return "cancel";
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}
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if (delete != null) {
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return delete();
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}
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boolean isNew = (company.getCompanyId() == null);
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companyManager.save(company);
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String key = (isNew) ? "company.added" : "company.updated";
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saveMessage(getText(key));
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if (!isNew) {
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return INPUT;
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} else {
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return SUCCESS;
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}
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}
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}

companyList.jsp

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<%@ include file="/common/taglibs.jsp" %>
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<head>
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<title><fmt:message key="companyList.title"/></title>
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</head>
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<s:form id="companyForm" action="searchCompany" method="post" validate="true">
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<li>
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<s:checkbox key="company.status" cssClass="checkbox" theme="simple"/>
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<s:label for="companyForm_company_status" value="%{getText('company.status')}" cssClass="choice desc" theme="simple"/>
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<s:label for="companyForm_company_companyType" value="%{getText('company.companyType.typeName')}" cssClass="desc"/>
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<s:select name="company.companyType.typeId" list="companyTypeList" listKey="typeId" listValue="typeName" ></s:select>
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<s:textfield key="company.companyName" required="true" maxlength="200" cssClass="text medium"/>
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</li>
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<li class="buttonBar bottom">
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<s:submit cssClass="button" method="search" key="button.search" theme="simple"/>
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</li>
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</s:form>
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<c:set var="buttons">
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<input type="button" style="margin-right: 5px" class="button"
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onclick="location.href='<c:url value="/editCompany.html"/>'"
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value="<fmt:message key="button.add"/>"/>
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<input type="button" class="button" onclick="location.href='<c:url value="/mainMenu.html"/>'"
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value="<fmt:message key="button.done"/>"/>
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</c:set>
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<c:out value="${buttons}" escapeXml="false"/>
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<display:table name="companies" class="table" requestURI="" id="companyList" export="true" pagesize="25">
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<display:column property="companyId" sortable="true" href="editCompany.html" media="html"
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paramId="companyId" paramProperty="companyId" titleKey="company.companyId"/>
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<display:column property="companyId" media="csv excel xml pdf" titleKey="company.companyId"/>
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<display:column sortProperty="status" sortable="true" titleKey="company.status">
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<input type="checkbox" disabled="disabled" <c:if test="${companyList.status}">checked="checked"</c:if>/>
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</display:column>
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<display:column property="companyType.typeName" sortable="true" titleKey="companyType.typeName"/>
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<display:column property="companyName" sortable="true" titleKey="company.companyName"/>
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<display:setProperty name="paging.banner.item_name"><fmt:message key="companyList.company"/></display:setProperty>
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<display:setProperty name="paging.banner.items_name"><fmt:message
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key="companyList.companies"/></display:setProperty>
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<display:setProperty name="export.excel.filename"><fmt:message key="companyList.title"/>.xls</display:setProperty>
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<display:setProperty name="export.csv.filename"><fmt:message key="companyList.title"/>.csv</display:setProperty>
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<display:setProperty name="export.pdf.filename"><fmt:message key="companyList.title"/>.pdf</display:setProperty>
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</display:table>
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<c:out value="${buttons}" escapeXml="false"/>
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highlightTableRows("companyList");
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</script>
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文章來源: http://heyday.blogcn.com/diary,15384409.shtml

posted on 2008-05-04 20:57 不同樊響閱讀(683) 評論(0) 編輯收藏

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