Question

我想使用2个日期作业参数执行查询，这些参数使用与Spring Batch的后期绑定。

JobParametersBuilder builder = new JobParametersBuilder()
builder.addDate("until", until);
builder.addDate("start", start);
JobExecution exec = jobLauncher.run(myJob, builder.toJobParameters())

我的豆/工作定义：

myReader(JdbcPagingItemReader) { bean ->
    bean.scope = 'step'
    bean.autowire = 'byName'
    dataSource = ref('dataSource')
    queryProvider = ref('sqlPagingQueryProviderFactoryBean')
    parameterValues = [
            start: "#{jobParameters['start']}",
            until: "#{jobParameters['until']}"
    ]
    pageSize = '10'
    rowMapper = ref('myRowMapper') // not shown here
}


sqlPagingQueryProviderFactoryBean(SqlPagingQueryProviderFactoryBean) { bean ->
    bean.autowire = 'byName'
    bean.scope = 'step'
    dataSource = ref('dataSource')
    selectClause = 'some_timestamp, column2'
    fromClause = 'some_table'
    whereClause = 'some_timestamp >= cast(:start as timestamp) AND some_timestamp < cast(:until as timestamp)'
    sortKey = 'some_timestamp'
}

我遇到各种错误，具体取决于我如何转换时间戳等，例如（对于上面的代码）：

step.AbstractStep在作业中遇到执行步骤myStep的错误 myJob org.springframework.dao.DataIntegrityViolationException： PreparedStatementCallback; SQL [SELECT some_timestamp，column2 FROM some_table WHERE some_timestamp＆gt; = cast（？as timestamp）AND some_timestamp＆lt; cast（？as timestamp）ORDER BY some_timestamp ASC 限制10];错误：类型timestamp的输入语法无效： “＃{jobParameters [ '开始']}”;嵌套异常是 org.postgresql.util.PSQLException：错误：无效的输入语法 type timestamp：“＃{jobParameters ['start']}”嵌套异常是 org.postgresql.util.PSQLException：错误：无效的输入语法输入时间戳：“＃{jobParameters ['start']}”

如何查询我的查询的时间戳？

Answer 1

好的，所以我使用this SO question作为线索并且没有将参数传递给SqlPagingQueryProviderFactoryBean，而只是在这里使用了后期绑定。

// within myReader, no need for parameters
// parameterValues = [
//        start: "#{jobParameters['start']}",
//        until: "#{jobParameters['until']}"
// ]


// within sqlPagingQueryProviderFactoryBean
whereClause = "some_timestamp >= '#{jobParameters[\'start\']}'::timestamptz AND some_timestamp < '#{jobParameters[\'until\']}'::timestamptz"

如何在Grails spring batch＆amp;中使用日期作业参数？ SQL？

1 个答案: