mysql - JdbcTemplate-忽略了SQLWarning:SQL状态为'22007'，错误代码为'1292'，消息[被截断了错误的DOUBLE值:'stepExecutionContext [toId]']

我只是在开发看着http://www.mkyong.com/spring-batch/spring-batch-partitioning-example/的Spring Batch分区代码，并且已经通过链接：Error Code 1292 - Truncated incorrect DOUBLE value - Mysql了，但是它并没有解决我的目的。

我有以下豆

<bean id="pagingItemReader" class="org.springframework.batch.item.database.JdbcPagingItemReader" scope="step">
        <property name="dataSource" ref="dataSource" />
        <property name="pageSize" value="200" />

        <property name="queryProvider">
            <bean class="org.springframework.batch.item.database.support.SqlPagingQueryProviderFactoryBean">
                <property name="dataSource" ref="dataSource" />
                <property name="selectClause" value="SELECT customerNumber, checkNumber,paymentDate,amount" />
                <property name="fromClause" value="FROM classicmodels.payments" />
                <property name="whereClause" value="${payments.query.where.clause}" />
                <property name="sortKey" value="customerNumber" />
            </bean>
        </property>
        <!-- Inject via the ExecutionContext in rangePartitioner -->
        <property name="parameterValues">
            <map>
                <entry key="fromId" value="stepExecutionContext[fromId]" />
                <entry key="toId" value="stepExecutionContext[toId]" />
            </map>
        </property>
        <property name="rowMapper">
            <bean class="com.prateek.mapper.PaymentsRowMapper" />
        </property>
    </bean>

出现以下错误：

2018-07-16 01:28:30 DEBUG o.s.jdbc.core.JdbcTemplate - SQLWarning ignored: SQL state '22007', error code '1292', message [Truncated incorrect DOUBLE value: 'stepExecutionContext[fromId]']
2018-07-16 01:28:30 DEBUG o.s.jdbc.core.JdbcTemplate - SQLWarning ignored: SQL state '22007', error code '1292', message [Truncated incorrect DOUBLE value: 'stepExecutionContext[fromId]']
2018-07-16 01:28:30 DEBUG o.s.jdbc.core.JdbcTemplate - SQLWarning ignored: SQL state '22007', error code '1292', message [Truncated incorrect DOUBLE value: 'stepExecutionContext[toId]']
2018-07-16 01:28:30 DEBUG o.s.jdbc.core.JdbcTemplate - SQLWarning ignored: SQL state '22007', error code '1292', message [Truncated incorrect DOUBLE value: 'stepExecutionContext[toId]']
2018-07-16 01:28:30 DEBUG o.s.b.repeat.support.RepeatTemplate - Repeat is complete according to policy and result value.
2018-07-16 01:28:30 DEBUG o.s.b.c.s.item.ChunkOrientedTasklet - Inputs not busy, ended: true
2018-07-16 01:28:30 DEBUG o.s.b.core.step.tasklet.TaskletStep - Applying contribution: [StepContribution: read=0, written=0, filtered=0, readSkips=0, writeSkips=0, processSkips=0, exitStatus=EXECUTING]
2018-07-16 01:28:30 DEBUG o.s.jdbc.core.JdbcTemplate - SQLWarning ignored: SQL state '22007', error code '1292', message [Truncated incorrect DOUBLE value: 'stepExecutionContext[fromId]']
2018-07-16 01:28:30 DEBUG o.s.jdbc.core.JdbcTemplate - SQL update affected 1 rows
2018-07-16 01:28:30 DEBUG o.s.jdbc.datasource.DataSourceUtils - Returning JDBC Connection to DataSource
2018-07-16 01:28:30 DEBUG o.s.b.s.t.ResourcelessTransactionManager - Participating in existing transaction
2018-07-16 01:28:30 DEBUG o.s.b.s.t.ResourcelessTransactionManager - Initiating transaction commit

database.properties：

#mysql datasource
spring.datasource.url=jdbc:mysql://localhost:3306/classicmodels?useSSL=false
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
payments.query.where.clause=WHERE customerNumber >= :fromId and customerNumber <= :toId

最佳答案

发生错误是因为值stepExecutionContext[fromId]未被评估为SpEL表达式，并且原始（按原样）发送到数据库服务器。

您链接到的示例使用正确的语法：<entry key="fromId" value="#{stepExecutionContext[fromId]}" />，但是在您的示例中，您具有：<entry key="fromId" value="stepExecutionContext[fromId]" />而没有#{...}。

即使mkyong示例中的语法正确无误，我还是建议在执行上下文（<entry key="fromId" value="#{stepExecutionContext['fromId']}" />）中的键周围使用简单的引号，如此处的官方文档中所述：https://docs.spring.io/spring-batch/4.0.x/reference/html/step.html#late-binding