重用bean的XML片段

Question

我有一個xml文件可以滿足我的需要，但是它有很多重復的代碼。 例如-用戶名和密碼是xml文件中每個bean的一部分。 我創建了以下帶有parentBean id的文件，希望可以重用子bean中的所有內容。 但是我得到The content of element type "bean" must match錯誤。

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
   <bean id="parentBean" class="com.dataloader.ProcessRunner" abstract="true">
   <description>Parent bean.</description>
      <map>
         <entry key="sfdc.debugMessages" value="true" />
         <entry key="sfdc.debugMessagesFile" value="C:\DLTest\accountExportSoapTrace.log" />
         <entry key="sfdc.endpoint" value="https://test.com" />
         <entry key="sfdc.username" value="test" />
         <entry key="sfdc.password" value="5b69d70a1dd974a21ecf64595ac02596f0c7c" />
         <entry key="process.encryptionKeyFile" value="D:\SF\dataLoader.key" />
         <entry key="sfdc.timeoutSecs" value="600" />
      </map>
   </bean>
   <bean id="account" singleton="false" parent="parentBean">
      <description>accountInsert exports all fields from the Account object.</description>
      <property name="name" value="account" />
      <property name="configOverrideMap">
         <map>
            <entry key="sfdc.entity" value="Account" />
            <entry key="process.operation" value="extract" />
            <entry key="sfdc.extractionSOQL" value="SELECT ID, Name, Phone FROM Account" />
            <entry key="process.mappingFile" value="D:\SF\accountExport.sdl" />
            <entry key="dataAccess.name" value="D:\SF\Account.csv" />
            <!--entry key="process.outputSuccess" 
                    value="c:\DLTest\accountExport_success.csv"/>
                <entry key="process.outputError" 
                    value="c:\DLTest\Log\accountExport_error.csv"/-->
            <entry key="dataAccess.type" value="csvWrite" />
            <entry key="process.initialLastRunDate" value="2018-10-1T00:00:00.000-0800" />
         </map>
      </property>
   </bean>
   <bean id="contact" singleton="false" parent="parentBean">
      <description>contactExport exports all fields from the Contact object.</description>
      <property name="name" value="contact" />
      <property name="configOverrideMap">
         <map>
            <!--entry key="sfdc.loadBatchSize" value="200"/-->
            <entry key="sfdc.entity" value="Contact" />
            <entry key="process.operation" value="extract" />
            <entry key="sfdc.extractionSOQL" value="SELECT ID, FirstName, LastName FROM Contact" />
            <entry key="process.mappingFile" value="D:\SF\contactExport.sdl" />
            <entry key="dataAccess.name" value="D:\SF\Contacts.csv" />
            <entry key="dataAccess.type" value="csvWrite" />
            <entry key="process.initialLastRunDate" value="2018-10-1T00:00:00.000-0800" />
         </map>
      </property>
   </bean>
</beans>

Answer 1

您需要在父bean上指定屬性名稱。 要合並來自父bean和子bean的映射，請在beans元素上設置屬性default-merge="true" 。

即

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"
    default-merge="true">
   <bean id="parentBean" class="com.dataloader.ProcessRunner" abstract="true">
   <description>Parent bean.</description>
     <property name="configOverrideMap">
       <map>
         <entry key="sfdc.debugMessages" value="true" />
         <entry key="sfdc.debugMessagesFile" value="C:\DLTest\accountExportSoapTrace.log" />
         <entry key="sfdc.endpoint" value="https://test.com" />
         <entry key="sfdc.username" value="test" />
         <entry key="sfdc.password" value="5b69d70a1dd974a21ecf64595ac02596f0c7c" />
         <entry key="process.encryptionKeyFile" value="D:\SF\dataLoader.key" />
         <entry key="sfdc.timeoutSecs" value="600" />
       </map>
     </property>
   </bean>
   ... rest of the applicationContext