jdbctemplate

I'm using the JDBC template and want to read from a database using prepared statements. I iterate over many lines in a .csv file, and on every line I execute some SQL select queries with corresponding values. I want to speed up my reading from the database but I don't know how to get the JDBC template to work with prepared statements. There is the PreparedStatementCreator and the PreparedStatementSetter . As in this example both of them are created with anonymous inner classes. But inside the PreparedStatementSetter class I don't have access to the values I want to set in the prepared

I have a method, 'databaseChanges', which call 2 operations: A, B in iterative way. 'A' first, 'B' last. 'A' & 'B' can be C reate, U pdate D elete functionalities in my persistent storage, Oracle Database 11g. Let's say, 'A' update a record in table Users, attribute zip, where id = 1. 'B' insert a record in table hobbies. Scenario: databaseChanges method is been called, 'A' operates and update the record. 'B' operates and try to insert a record, something happen, an exception is been thrown, the exception is bubbling to the databaseChanges method. Expected: 'A' and 'B' didn't change nothing.

JDBC模板技术： Spring框架中提供了很多持久层的模板类来简化编程，使用模板类编写程序会变的简单 template 模板 都是Spring框架提供XxxTemplate 提供了JDBC模板，Spring框架提供的 JdbcTemplate类，Connection 表示连接，管理事务 Statement ResultSet 如何使用JDBC模板类？ 在数据库中新增表结构和数据 1 DROP TABLE IF EXISTS `account`; 2 CREATE TABLE `account` ( 3 `id` int(11) NOT NULL AUTO_INCREMENT, 4 `name` varchar(40) DEFAULT NULL, 5 `money` double DEFAULT NULL, 6 PRIMARY KEY (`id`) 7 ) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=utf8; 8 9 -- ---------------------------- 10 -- Records of account 11 -- ---------------------------- 12 INSERT INTO `account` VALUES ('1', 'aaa', '1000'); 13 INSERT

The queryforInt/queryforLong methods in JdbcTemplate are deprecated in Spring 3.2. I can't find out why or what is considered the best practice to replace existing code using these methods. A typical method: int rowCount = jscoreJdbcTemplate.queryForInt( "SELECT count(*) FROM _player WHERE nameKey = ? AND teamClub = ?", playerNameKey.toUpperCase(), teamNameKey.toUpperCase() ); OK the above method needs to be re-written as follows: Object[] params = new Object[] { playerNameKey.toUpperCase(), teamNameKey.toUpperCase() }; int rowCount = jscoreJdbcTemplate.queryForObject( "SELECT count(*) FROM

Spring中的用到的设计模式大全 spring中常用的设计模式达到九种，我们举例说明： 第一种：简单工厂 又叫做静态工厂方法（StaticFactory Method）模式，但不属于23种GOF设计模式之一。 简单工厂模式的实质是由一个工厂类根据传入的参数，动态决定应该创建哪一个产品类。 spring中的BeanFactory就是简单工厂模式的体现，根据传入一个唯一的标识来获得bean对象，但是否是在传入参数后创建还是传入参数前创建这个要根据具体情况来定。如下配置，就是在 HelloItxxz 类中创建一个 itxxzBean。 <beans> <bean id="singletonBean" class="com.itxxz.HelloItxxz"> <constructor-arg> <value>Hello! 这是singletonBean!value> </constructor-arg> </ bean> <bean id="itxxzBean" class="com.itxxz.HelloItxxz" singleton="false"> <constructor-arg> <value>Hello! 这是itxxzBean! value> </constructor-arg> </bean> </beans> 第二种：工厂方法（Factory Method ）

For a new project is JPA always the recommended tool for handling relational data or are there scenarios where Spring JdbcTemplate is a better choice? Some factors to consider in your response: new database schema vs pre-existing schema and tables level of developer expertise ease with which can integrate with a data caching layer performance any other relevant factors to consider? Use Spring JdbcTemplate if you don't want to access your database schema via a domain model. Using JdbcTemplate you are using a lower level access, with more flexibility, but probably also more boilerplate. Spring

I use Spring Boot 1.5 and spring data JPA with MySQL. I tried to run a simple counting query on a single table, but could not find a better way to map the Query results than this.: Repository: public interface VehicleRepository extends JpaRepository<Vehicle, String> { @Query("select v.sourceModule as sourceModule, count(v) as vehicleCount from Vehicle v group by v.sourceModule") List<Object[]> sourceModuleStats(); } Service: @Override public List<SourceModuleStatDTO> getSourceModuleStats() { List<Object[]> objects = vehicleRepository.sourceModuleStats(); return objects.stream() .map(o-

第07章JdbcTemplate 1. 概述 为了使JDBC更加易于使用，Spring在JDBC API上定义了一个抽象层，以此建立一个JDBC存取框架。 作为Spring JDBC框架的核心，JDBC模板的设计目的是为不同类型的JDBC操作提供模板方法，通过这种方式，可以在尽可能保留灵活性的情况下，将数据库存取的工作量降到最低。 可以将Spring的JdbcTemplate看作是一个小型的轻量级持久化层框架，和我们之前使用过的DBUtils风格非常接近。 2. 环境准备 2.1 导入JAR包 ①IOC容器所需要的JAR包 commons-logging-1.1.1.jar spring-beans-4.0.0.RELEASE.jar spring-context-4.0.0.RELEASE.jar spring-core-4.0.0.RELEASE.jar spring-expression-4.0.0.RELEASE.jar ②JdbcTemplate所需要的JAR包 spring-jdbc-4.0.0.RELEASE.jar spring-orm-4.0.0.RELEASE.jar spring-tx-4.0.0.RELEASE.jar ③数据库驱动和数据源 c3p0-0.9.1.2.jar mysql-connector-java-5.1.7-bin.jar 2.2