jdbctemplate | 易学教程

how to get errors(if possible), exceptions,fails,success counts and ids from jdbctemplate batchupdate?

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问题 I am using the below code to do the same. Whenever an sql error occurs(eg: number out of range) batch update stops and getting the result(int array) as null. so i added ignore to the update statement. Now the batch is getting completed ignoring the sqlerror. This time I am getting failureids(ids skipped) and successids(ids processed as well as errors and exceptions). But i want the counts/ids of success,failures,errors,exceptions separately. how do I do that? Also i added

how to get errors(if possible), exceptions,fails,success counts and ids from jdbctemplate batchupdate?

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Spring JdbcTemplate Insert throws uncategorized SQLException

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问题 I am inserting a new row into a table with Spring JDBCTemplate. The jdbcTemplate.update() throws the following exception: PreparedStatementCallback; uncategorized SQLException for SQL []; SQL state [99999]; error code [17090]; operation not allowed But the row is inserted into the db anyway. Here's the code: final StringBuilder widgetInsert = new StringBuilder(); widgetInsert.append("INSERT INTO WIDGET (ID, KEY, DEPT_NUM, TYPE, CREATED_BY_ID, CREATED_DATE) "); widgetInsert.append("VALUES

How can I get a spring JdbcTemplate to read_uncommitted?

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问题 Firstly, I can't use the declarative @Transactional approach as the application has multiple JDBC data-sources, I don't want to bore with the details, but suffice it to say the DAO method is passed the correct data-source to perform the logic. All JDBC data sources have the same schema, they're separated as I'm exposing rest services for an ERP system. Due to this legacy system there are a lot of long lived locked records which I do not have control over, so I want dirty reads. Using JDBC I

Spring JdbcTemplate: how to limit selected rows?

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问题 I'm using Spring JdbcTemplate interface for fetching data from a MS SqlServer DB. In the documentation I see there is the setMaxRows() method to set a limit for all the queries, but what if I want to limit only a select? Is there a way to set a limit only for a specific invoked query in a "configurable" way? 回答1: Limiting the result set of a specific query can be done by putting the limit directly into the query. Consult your DB vendor documentation to see if it supports for example LIMIT .

Spring中的事务操作

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事务的特性原子性：强调事务的不可分割。一致性：事务的执行的前后数据的完整性保持一致。隔离性：一个事务执行的过程中，不应该受到其他事务的干扰。持久性：事务一旦结束，数据就持久化到数据库。如果不考虑隔离性会引发的安全性问题脏读：一个事务读到了另一个事务的未提交的数据。不可重复读：一个事务读到了另一个事务已经提交的update的数据，导致多次查询的结果不一致。虚读：一个事务读到了另一个事务已经提交的insert的数据，导致多次查询的结果不一致。解决读问题：设置事务的隔离级别未提交读：脏读、不可重复读和虚读都有可能发生。已提交读：避免脏读，但是不可重复读和虚读有可能发生。可重复读：避免脏读和不可重复读，但是虚读有可能发生。串行化的：避免以上所有读问题。 Spring的声明式事务管理方式 Spring进行声明式事务配置的方式有两种：基于xml配置文件方式基于注解方式但无论使用什么方式进行Spring的事务操作，首先要配置一个事务管理器。搭建转账的环境第一步，创建数据库表。 DROP TABLE IF EXISTS `account`; CREATE TABLE `account` ( `id` int(11) DEFAULT NULL, `username` varchar(100) DEFAULT NULL, `salary` int(11)

how we can shutdown hsqldb database in java

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问题 i am using hsqldb as my database. i want whenerver my select query, update query execute it will shutdown a database. below is the method in which i need a code from which i can manually shutdown my database. private void insertInitData(BasicDataSource dataSource, int lmexAdapterId, int lmsId) { try { JdbcTemplate jdbcTemplate = new JdbcTemplate(dataSource); String lmexPostParam_id = UUID.randomUUID().toString(); String inertQuery = "Insert into lmex_post_param (lmex_post_param_id, param_name

Oracle data source connection pooling not working used with Spring and JDBCTemplate

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问题 Question: Lot of active unclosed physical connections with database even with connection pooling. Can someone tell me why is it so? I configured the connection pool settings using oracle.jdbc.pool.OracleDataSource . However it seems the physical connections are not getting closed after use. I thought, Since it is connection pooling, the connections will be reused from the pool, so so many physical connections will not be made, but thats not what is happening now! There are 100+ active

Select date query with time format is not working with JDBCTemplate and util.Date

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问题 I am using Spring JDBCTemplate to conneect DB. When I am selecting date in DB using below query select to_date(valid_to,'DD-MM-YYYY HH24:MI:SS') from composition output is, 31-12-99 23:59:59. But, when I am using the same with JDBCTemplate like below, Date d = jdbcTemplate.queryForObject("select to_date(valid_to,'DD-MM-YY HH24:MI:SS') from composition",Date.class); outpt is 2099-12-31 00:00:00.0. Time is not correct. I also need the same time in Date class. How to get that? 回答1: You need to

Return a list, I already have a rowmapper implementation

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问题 In my UserDao I want to return a list of users. I already have a UserRowMapper that implements RowMapper<User> . How can I do this? I tried: List rows = getJdbcTemplate().queryforList("select * from users"); for(Map row : rows) { } But wasn't sure how to use my UserRowMapper to populate a User object and insert it into my list of users List. BTW, is this the best generic list I shoudl be using: List<User> users = new ArrayList<User>(); ? 回答1: Use JdbcTemplate.query(String sql, RowMapper<T>