Spring Integration JDBC 入站適配器

Question

我必須從數據庫中讀取行並將行傳遞給服務激活器
在 rowmapper 的幫助下，我們能夠實現自己的框架發送郵件，問題是我們需要根據服務激活器方法的成功或失敗，使用動態狀態和 errorstackstrace 更新相應行的列。

<int-jdbc:inbound-channel-adapter id="emailReqestChannel"
        query="select * from email_requests where email_request_status = 'NEW'"
        update="update email_requests set email_request_status = 'SUCCESS' where email_request_id in (:email)"
        max-rows-per-poll="10"
        data-source="dataSource" row-mapper="emailRequestRowMapper">
    <int:poller fixed-rate="1000">
        <int:transactional />
    </int:poller>
</int-jdbc:inbound-channel-adapter>
<int:service-activator input-channel="emailReqestChannel" ref="emailRequestMessageHandler" />
<bean id="jdbcMessageHandler"
        class="com.company.selfservice.jdbc.handler.JdbcMessageHandler" />
<bean id="emailRequestMessageHandler"
        class="com.company.selfservice.jdbc.handler.EmailRequestMessageHandler" />
<bean id="transactionManager"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    <property name="dataSource" ref="dataSource" />
</bean>
<int:poller default="true" fixed-rate="10000"/>
<int:channel id="dataChannel">
    <int:queue />
</int:channel>
<int:channel id="emailReqestChannel">
    <int:queue />
</int:channel>
<bean id="dataSource"
        class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="driverClassName" value="org.gjt.mm.mysql.Driver" />
    <property name="url" value="${database.connection_url}" />
    <property name="username" value="${database.user}" />
    <property name="password" value="${database.password}" />
</bean>
<bean id="emailRequestRowMapper"
        class="com.company.selfservice.jdbc.handler.EmailRequestRowMapper" />

Answer 1

如果故事是關於dynamic status and errorstackstrace depending success or failure ，那么您不應該在<int-jdbc:inbound-channel-adapter>使用update ，而應該真正考慮使用<int-jdbc:outpbund-channel-adapter> ，您可以在那里解決針對請求消息的查詢參數： https : <int-jdbc:outpbund-channel-adapter> -適配器