jdbctemplate

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I try to write a transaction manager using JDBC in Spring. my app-servlet.xml <!-- JDBC Config --> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close" p:driverClassName="${jdbc.driverClassName}" p:url="${jdbc.databaseurl}" p:username="${jdbc.username}" p:password="${jdbc.password}" /> <!-- dataSource TransactionManager --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> <bean id="UserDAOImpl

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Currently I'm converting the xml to java config. But I stuck at some part that I have been research for several days. Here the problem: Xml config: <jee:jndi-lookup id="dbDataSource" jndi-name="${db.jndi}" resource-ref="true" /> <beans:bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate" > <beans:property name="dataSource" ref="dbDataSource"></beans:property> </beans:bean> So far I managed to convert this code: <jee:jndi-lookup id="dbDataSource" jndi-name="${db.jndi}" resource-ref="true" /> to this : @Bean(name =

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I use jpa with hibernate. I have following method: @Transactional public void myMethod(){ ... firstJDBCTemplateQuery(); secondJDBCTemplateQuery(); ... } firstJDBCTemplateQuery works, but it closes connection to database. When second secondJDBCTempolateQuery is executed java.sql.SQLException: Connection is closed exception is thrown what causes org.springframework.transaction.TransactionSystemException: Could not roll back JPA transaction ... My configuration: EDIT <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am using Jdbctemplate to retrieve a single String value from the db. Here is my method. public String test() { String cert=null; String sql = "select ID_NMB_SRZ from codb_owner.TR_LTM_SLS_RTN where id_str_rt = '999' and ID_NMB_SRZ = '60230009999999'"; cert = (String) jdbc.queryForObject(sql, String.class); return cert; } In my scenario it is complete possible to NOT get a hit on my query so my question is how do I get around the following error message. EmptyResultDataAccessException: Incorrect result size: expected 1, actual 0 It would

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I am using spring with have multiple datasources (catering to multiple mysql dbs) and using tomcat dbcp. I am getting some weird exceptions like procedure not found - when the proc is definitely present in the db cannot borrow from pool - local dev setup, so definitely the pool is not full the Problem I feel might be this, need inputs from everyone: I have one jdbcTemplate object defined in my spring.xml , on every query that I need to fire, I call jdbcTemplate.setDataSource() to set the appropriate datasource and then use

From what I understand, both DataSource and JdbcTemplates are threadsafe , so you can configure a single instance of a JdbcTemplate and then safely inject this shared reference into multiple DAOs (or repositories) . Also DataSource should be a Spring singleton, since it manages the connection pool. The official Spring Documentation JdbcTemplate best practices explains the alternatives (excerpts from the manual are in italics, and my notes between square brackets: configure a DataSource in your Spring configuration file, and then dependency-inject that shared DataSource bean into your DAO

Spring's JdbcTemplate abstraction provides a lot of functionality, but can it be used in such a way that provides protection from SQL injection attacks? For example, like the kind of protection you would get using PreparedStatement with properly defined parameterization. Donal Fellows It most certainly does. This example is straight from the Spring 3.0 docs (but is the same in 2.*): String lastName = this.jdbcTemplate.queryForObject( "select last_name from t_actor where id = ?", String.class, 1212L); As you can see, it strongly favors prepared statements (which it must be using behind the