如何在春季使用地图列表进行批量更新?
2022-09-04 04:01:49
春天的新手,我正在尝试将一个插入到表格中。到目前为止,我一直在使用批量更新,当向他们提供java bean时,它可以正常工作。像这样:List<Map<String, Object>>
SqlParameterSource
@Autowired
private NamedParameterJDBCTemplate v2_template;
public int[] bulkInsertIntoSiteTable(List<SiteBean> list){
SqlParameterSource[] batch = SqlParameterSourceUtils
.createBatch(list.toArray());
int[] updateCounts = v2_template
.batchUpdate(
"insert into sitestatus (website, status, createdby) values (:website, :status, :username)",
batch);
return updateCounts;
}
但是,我尝试了相同的技术,用地图列表代替豆子,它失败了(这是正确的)。
public int[] bulkInsertIntoSiteTable(List<Map<String, Object>> list){
SqlParameterSource[] batch = SqlParameterSourceUtils
.createBatch(list.toArray());
int[] updateCounts = v2_template
.batchUpdate(
"insert into sitestatus (website, status, createdby) values (:website, :status, :username)",
batch);
return updateCounts;
}
上述代码失败,出现以下异常:
Exception in thread "main" org.springframework.dao.InvalidDataAccessApiUsageException: No value supplied for the SQL parameter 'website': Invalid property 'website' of bean class [org.springframework.util.LinkedCaseInsensitiveMap]: Bean property 'website' is not readable or has an invalid getter method: Does the return type of the getter match the parameter type of the setter?
at org.springframework.jdbc.core.namedparam.NamedParameterUtils.buildValueArray(NamedParameterUtils.java:322)
at org.springframework.jdbc.core.namedparam.NamedParameterBatchUpdateUtils$1.setValues(NamedParameterBatchUpdateUtils.java:45)
at org.springframework.jdbc.core.JdbcTemplate$4.doInPreparedStatement(JdbcTemplate.java:893)
at org.springframework.jdbc.core.JdbcTemplate$4.doInPreparedStatement(JdbcTemplate.java:1)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:587)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:615)
at org.springframework.jdbc.core.JdbcTemplate.batchUpdate(JdbcTemplate.java:884)
at org.springframework.jdbc.core.namedparam.NamedParameterBatchUpdateUtils.executeBatchUpdateWithNamedParameters(NamedParameterBatchUpdateUtils.java:40)
at org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate.batchUpdate(NamedParameterJdbcTemplate.java:303)
at tester.utitlies.dao.VersionTwoDao.bulkInsertIntoSites(VersionTwoDao.java:21)
at tester.utitlies.runner.Main.main(Main.java:28)
它失败了,因为它认为这个列表是一批豆子,我猜。我找不到一种方法在春季使用地图列表并使用.请指教。NamedParameterJDBCTemplate