spring mvc和struts2开发实例2

书接上文，今天讲讲struts2+spring搞定增、删、改、查，持久层使用的是jdbcTemplate。

1.配置web.xml

  引入spring和struts2功能，代码如下：

<!-- 配置加载spring配置文件的监听器 -->
<listener>
    <listener-class>
        org.springframework.web.context.ContextLoaderListener
    </listener-class>
</listener>

<!-- struts2配置 -->
<filter>
    <filter-name>struts2</filter-name>
    <filter-class>
        org.apache.struts2.dispatcher.FilterDispatcher
    </filter-class>
</filter>

<filter-mapping>
    <filter-name>struts2</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

<welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
</welcome-file-list>

2.配置applicationContext.xml

   代码如下：

<!--数据源-->
<bean id="dataSource"
    class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="driverClassName">
        <value>com.mysql.jdbc.Driver</value>
    </property>
    <property name="url">
        <value>jdbc:mysql://localhost:3306/test</value>
    </property>
    <property name="username">
        <value>root</value>
    </property>
    <property name="password">
        <value>780502</value>
    </property>
</bean>

<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
    <property name="dataSource">
        <ref bean="dataSource" />
    </property>
</bean>

<!--客户处理-->
<bean id="customerBean"
    class="com.wangsy.struts.action.CustomerAction" scope="prototype">
    <property name="service" ref="customerService" />
</bean>

<bean id="customerService"
    class="com.wangsy.struts.service.impl.CustomerServiceImpl">
    <property name="dao" ref="customerDao" />
</bean>

<bean id="customerDao"
    class="com.wangsy.struts.dao.impl.CustomerDaoImpl">
    <property name="jdbcTemplate" ref="jdbcTemplate" />
</bean>

3.配置struts.xml

  代码如下：

<package name="test" extends="struts-default">
    <action name="list" class="customerBean" method="list">
          <result name="list_view">customerList.jsp</result>
      </action>
     <action name="add" class="customerBean" method="add">
          <result name="list_view">customerList.jsp</result>
          <result name="input">customerList.jsp</result>
      </action>
    <action name="update" class="customerBean" method="update">
          <result name="list_view">customerList.jsp</result>
          <result name="input">customerUpdate.jsp</result>
      </action>
       <action name="delete" class="customerBean" method="delete">
          <result name="list_view">customerList.jsp</result>
      </action>
      <action name="beforeUpdate" class="customerBean"
 method="beforeUpdate">
          <result name="update_view">customerUpdate.jsp</result>
      </action>
</package>

  注意：<action name="list" class="customerBean" method="list">

  指定的class是applicationContext.xml声明过的bean的name，即customerBean。

4.实现类代码片段：CustomerAction.java

/**
 *
 * 功能：验证客户信息
 * 方法名:validateForm
 * @param
 * @return boolean
 */
public boolean validateForm(){
    boolean validate = true;
    String custName = customer.getCustName();
    String address = customer.getAddress();

    //客户姓名不能为空,且不能超过20个字符
    if (custName == null || "".equals(custName)){
        this.addFieldError("customer.custName", "客户姓名不能为空!");
        validate = false;
    }else if (custName.length() > 20){
        this.addFieldError("customer.custName", "客户姓名不能超过20个字符！");
        validate = false;
    }

    //客户地址不能为空,且不能超过20个字符
    if (address == null || "".equals(address)){
        this.addFieldError("customer.address", "客户地址不能为空！");
        validate = false;
    }else if (address.length() > 20){
        this.addFieldError("customer.address", "客户地址不能超过20个字符！");
        validate = false;
    }

    return validate;
}

/**
 *
 * 功能：增加客户信息
 * 方法名:add
 * @param
 * @return String
 */
public String add() throws Exception {
    if (validateForm()){
        service.insertCustomer(customer);
    }
    return list();
}

5.页面文件：customerList.jsp和customerUpdate.jsp

   customerUpdate.jsp代码片段如下：

<s:form action="update.action" method="post">
    <h1>
        修改客户信息
    </h1>
    <br>
    <s:hidden name="customer.custId" />
    <s:textfield name="customer.custName" label="客户姓名" />
    <s:textfield name="customer.address" label="客户地址"  />
    <s:submit value="修改" />
</s:form>

有源代码下载喔，注意附件。lib下的jar太大省略了，可自行添加，表结构参见上一篇。