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我不明白为什么我在这里得到 “无效的列名” 。
我们直接在 Oracle 中尝试了 sql 的一个变体，它工作正常，但是当我使用 jdbcTemplate 尝试它时，出现了问题。
List<Dataholder> alleXmler = jdbcTemplate.query("select p.applicationid, x.datadocumentid, x.datadocumentxml " +
"from CFUSERENGINE51.PROCESSENGINE p " +
"left join CFUSERENGINE51.DATADOCUMENTXML x " +
"on p.processengineguid = x.processengineguid " +
"where x.datadocumentid = 'Disbursment' " +
"and p.phasecacheid = 'Disbursed' ",
(rs, rowNum) -> {
return Dataholder.builder()
.applicationid(rs.getInt("p.applicationid"))
.datadocumentId(rs.getInt("x.datadocumentid"))
.xml(lobHandler.getClobAsString(rs, "x.datadocumentxml"))
.build();
});
在 Oracle 上运行的整个 sql 是这样的：
select
process.applicationid,
xml.datadocumentid,
xml.datadocumentxml
from CFUSERENGINE51.PROCESSENGINE process
left join CFUSERENGINE51.DATADOCUMENTXML xml
on process.processengineguid = xml. processengineguid
where xml.datadocumentid = 'Disbursment'
and process.phasecacheid = 'Disbursed'
and process.lastupdatetime > sysdate-14
整个堆栈跟踪：
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.boot.maven.AbstractRunMojo$LaunchRunner.run(AbstractRunMojo.java:507)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalStateException: Failed to execute CommandLineRunner
at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:803)
at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:784)
at org.springframework.boot.SpringApplication.afterRefresh(SpringApplication.java:771)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:316)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1186)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1175)
at no.gjensidige.bank.datavarehus.kontonrinfridd.Application.main(Application.java:44)
... 6 more
Caused by: org.springframework.jdbc.BadSqlGrammarException: StatementCallback; bad SQL grammar [select p.applicationid, x.datadocumentid, x.datadocumentxml from CFUSERENGINE51.PROCESSENGINE p left join CFUSERENGINE51.DATADOCUMENTXML x on p.processengineguid = x.processengineguid where x.datadocumentid = 'Disbursment' ]; nested exception is java.sql.SQLException: Invalid column name
at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.doTranslate(SQLErrorCodeSQLExceptionTranslator.java:231)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:73)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:419)
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:474)
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:484)
at no.gjensidige.bank.datavarehus.kontonrinfridd.Application.run(Application.java:61)
at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:800)
... 12 more
Caused by: java.sql.SQLException: Invalid column name
at oracle.jdbc.driver.OracleStatement.getColumnIndex(OracleStatement.java:4146)
at oracle.jdbc.driver.InsensitiveScrollableResultSet.findColumn(InsensitiveScrollableResultSet.java:300)
at oracle.jdbc.driver.GeneratedResultSet.getString(GeneratedResultSet.java:1460)
at org.apache.commons.dbcp2.DelegatingResultSet.getString(DelegatingResultSet.java:267)
at org.apache.commons.dbcp2.DelegatingResultSet.getString(DelegatingResultSet.java:267)
at no.gjensidige.bank.datavarehus.kontonrinfridd.Application.lambda$run$0(Application.java:69)
at org.springframework.jdbc.core.RowMapperResultSetExtractor.extractData(RowMapperResultSetExtractor.java:93)
at org.springframework.jdbc.core.RowMapperResultSetExtractor.extractData(RowMapperResultSetExtractor.java:60)
at org.springframework.jdbc.core.JdbcTemplate$1QueryStatementCallback.doInStatement(JdbcTemplate.java:463)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:408)
... 16 more
原文由 Shervin Asgari 发布，翻译遵循 CC BY-SA 4.0 许可协议
java
问题不在于查询。查询运行良好。
问题出在将行从
ResultSet转换为域对象的行映射中。似乎作为应用程序中行映射的一部分，您正在尝试从ResultSet中读取它不包含的列中的值。堆栈跟踪的关键行是以下三行，靠近底部：
这三行的中间似乎在您的代码中。您的
Application类的第 69 行包含一个调用ResultSet.getString()的 lambda，但是由于这会导致“列名无效”错误，因此 (a) 您正在传递一个字符串列名而不是数字列索引，并且 (b) 结果集中不存在您传递的列名。既然您已经编辑了您的问题以包括对
jdbcTemplate.query()的调用，特别是负责将结果集行映射到对象的 lambda，问题就更清楚了。 When callingrs.getInt(...)orrs.getString(...)with column names as opposed to indexes, don’t include prefixes such asp.orx..而不是写rs.getInt("p.applicationid")或rs.getInt("x.datadocumentid")，写rs.getInt("applicationid")或rs.getInt("datadocumentid")