靈魂-放水

?struts2 的demo 中的employee層可以清晰的暫時(shí)struts希望給開(kāi)發(fā)者帶來(lái)的架構(gòu)

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EmployeeAction <-- AbstractCRUDAction (web 層)
?? ^
?? |
EmployeeDao <-- AbstractDao <-- Dao (Domain 層，demo中也作為service存在于spring容器中)
?? ^
?? |
Employee <--IDEntity

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struts.xml 配置

??? <package name="skill" extends="default" namespace="/skill">
??????? <default-interceptor-ref name="crudStack"/>

??????? <action name="list" class="org.apache.struts2.showcase.action.SkillAction" method="list">
??????????? <result>/empmanager/listSkills.jsp</result>
??????????? <interceptor-ref name="basicStack"/>
??????? </action>
??????? <action name="edit" class="org.apache.struts2.showcase.action.SkillAction">
??????????? <result>/empmanager/editSkill.jsp</result>
??????????? <interceptor-ref name="params" />
??????????? <interceptor-ref name="basicStack"/>
??????? </action>
??????? <action name="save" class="org.apache.struts2.showcase.action.SkillAction" method="save">
??????????? <result name="input">/empmanager/editSkill.jsp</result>
??????????? <result type="redirect">edit.action?skillName=${currentSkill.name}</result>
??????? </action>
??????? <action name="delete" class="org.apache.struts2.showcase.action.SkillAction" method="delete">
??????????? <result name="error">/empmanager/editSkill.jsp</result>
??????????? <result type="redirect">edit.action?skillName=${currentSkill.name}</result>? 這里展現(xiàn)了struts2具有良好的url特性，比起ww的crud!edit讓人舒服多了
??????? </action>
??? </package>

??? <package name="employee" extends="default" namespace="/employee">
??????? <default-interceptor-ref name="crudStack"/>

??????? <action name="list" class="org.apache.struts2.showcase.action.EmployeeAction" method="list">
??????????? <result>/empmanager/listEmployees.jsp</result>
??????????? <interceptor-ref name="basicStack"/>
??????? </action>
??????? <action name="edit-*" class="org.apache.struts2.showcase.action.EmployeeAction">
???????? <param name="empId">{1}</param>
??????????? <result>/empmanager/editEmployee.jsp</result>
??????????? <interceptor-ref name="crudStack"><param name="validation.excludeMethods">execute</param></interceptor-ref>
??????? </action>
??????? <action name="save" class="org.apache.struts2.showcase.action.EmployeeAction" method="save">
??????????? <result name="input">/empmanager/editEmployee.jsp</result>
??????????? <result type="redirect">edit-${currentEmployee.empId}.action</result>
??????? </action>
??????? <action name="delete" class="org.apache.struts2.showcase.action.EmployeeAction" method="delete">
??????????? <result name="error">/empmanager/editEmployee.jsp</result>
??????????? <result type="redirect">edit-${currentEmployee.empId}.action</result>
??????? </action>
??? </package>
???
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每一個(gè)action有自己的properties文件，非常便于管理和代碼生成，
當(dāng)然也有一個(gè)全局的globalMessages.properties來(lái)存放一些save,delete這些都一樣的字符
employee=Employee
employee.firstName=First Name
employee.lastName=Last Name
employee.description=Description

employee.id.required=Id is required
employee.lastName.required=Last Name is required
employee.birthDate.required=Birthdate is required
employee.backtolist=Back to Employee List

每個(gè)action自己的validation
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE validators PUBLIC "-//OpenSymphony Group//XWork Validator 1.0//EN" "<validators>
??? <!-- Field-Validator Syntax -->
??? <field name="currentEmployee.empId">
??????? <field-validator type="required">
??????????? <message key="employee.id.required"/>
??????? </field-validator>
??? </field>
??? <field name="currentEmployee.lastName">
??????? <field-validator type="requiredstring">
??????????? <param name="trim">true</param>
??????????? <message key="employee.lastName.required"/>
??????? </field-validator>
??? </field>
??? <field name="currentEmployee.birthDate">
??????? <field-validator type="required">
??????????? <message key="employee.birthDate.required"/>
??????? </field-validator>
??? </field>
</validators>

??? <bean id="skillDao" class="org.apache.struts2.showcase.dao.SkillDao"/>
??? <bean id="employeeDao" class="org.apache.struts2.showcase.dao.EmployeeDao"/>
???
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struts2中的每一個(gè)action,也就是struts.xml里面聲明的action,最終都將作為spring中的一個(gè)bean完成請(qǐng)求。
如果你不做額外的設(shè)定，struts2會(huì)自動(dòng)生成這個(gè)bean。
如果你有特殊的需要，還可以在applicationContext.xml自己聲明這個(gè)bean
你必須根據(jù)需要來(lái)決定是否再次聲明
struts.xml
<!DOCTYPE struts PUBLIC
??? "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
??? "<struts>
??? <include file="struts-default.xml"/>

applicationConext.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "<beans default-autowire="autodetect">
??? <bean id="bar" class="com.my.BarClass" singleton="false"/>
??? ...
</beans>