jdbctemplate

java.sql.SQLException: Invalid column index using jdbcTemplate

二次信任 提交于 2019-12-02 04:27:07
I'm a newbie JAVA. I have a config file <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <context:component-scan base-package="org.springframework.docs.test" /> <bean id="dataSource" class="org

JdbcTemplate - Insert or update Oracle BLOB using SQL MERGE

↘锁芯ラ 提交于 2019-12-02 01:56:49
问题 Using JdbcTemplate I would like to call MERGE SQL statement which will insert a new record to the table or update if row with specific key already exists. The key part is that one of the column is of the Oracle BLOB type. Here is what I tried till now: Try 1. Sql statement: String sql = "" + "MERGE INTO file_thumbnails " + " USING (SELECT ? as file_c_id, ? as thumbnail_type, ? as thumbnail_image FROM DUAL) tmp " + " ON (file_thumbnails.file_c_id = tmp.file_c_id AND " + " file_thumbnails

JdbcTemplate - Insert or update Oracle BLOB using SQL MERGE

人盡茶涼 提交于 2019-12-01 23:21:15
Using JdbcTemplate I would like to call MERGE SQL statement which will insert a new record to the table or update if row with specific key already exists. The key part is that one of the column is of the Oracle BLOB type. Here is what I tried till now: Try 1. Sql statement: String sql = "" + "MERGE INTO file_thumbnails " + " USING (SELECT ? as file_c_id, ? as thumbnail_type, ? as thumbnail_image FROM DUAL) tmp " + " ON (file_thumbnails.file_c_id = tmp.file_c_id AND " + " file_thumbnails.thumbnail_type = tmp.thumbnail_type) " + " WHEN MATCHED THEN " + " UPDATE " + " SET thumbnail_image = tmp

differences between spring jdbctemplate and Hibernate [duplicate]

℡╲_俬逩灬. 提交于 2019-12-01 22:17:43
问题 This question already has an answer here : Spring Hibernate Vs jdbc template vs spring orm [closed] (1 answer) Closed 6 years ago . My question just simple : what are the main differences between Spring jdbcTemplate and Hibernate ? what are the main reasons we should take into account for using one or the other ? Thanks 回答1: Hibernate is a really huge solution with data persistence and ORM including JPA implementation. Also, there are defined many ways how to manage entities in Hibernate, how

differences between spring jdbctemplate and Hibernate [duplicate]

自闭症网瘾萝莉.ら 提交于 2019-12-01 21:15:03
This question already has an answer here: Spring Hibernate Vs jdbc template vs spring orm [closed] 1 answer My question just simple : what are the main differences between Spring jdbcTemplate and Hibernate ? what are the main reasons we should take into account for using one or the other ? Thanks Martin Strejc Hibernate is a really huge solution with data persistence and ORM including JPA implementation. Also, there are defined many ways how to manage entities in Hibernate, how to persist, transactions, etc. In hibernate you can use SQL, HQL or java annotations. JDBC template is just a simple

JdbcTemplate批量插入数据

北城余情 提交于 2019-12-01 19:02:54
运行环境:SpringBoot,注入JdbcTemplate @Autowired private JdbcTemplate jdbcTemplate; 1、单表批量插入数据 @Test public void batchTest() throws IOException { InputStream inputStream = new FileInputStream("O:\\files\\测试.txt"); List<Object[]> list = new ArrayList<>(); for (String readLine : IOUtils.readLines(inputStream,"utf-8")){ String[] s = readLine.split("\\|"); //list.add(new Object[]{s[0],s[1],s[2],s[3],s[4]}); list.add(new Object[]{s[1],s[0]}); } //遍历List<Object[]>集合中的每一个元素 /* for (Object[] o : list){ for (int i = 0; i < o.length; i++) { System.out.println("==========="+o[i]); } }*/ //执行批量插入操作 String sql =

Spring的声明式事务和编程式事务详解

我们两清 提交于 2019-12-01 18:36:15
原文地址 https://blog.csdn.net/w372426096/article/details/78391177 编程式事务: 所谓编程式事务指的是通过 编码方式实现事务 ,即类似于 JDBC 编程实现事务管理。管理使用 TransactionTemplate 或者直接使用底层的 PlatformTransactionManager。对于编程式事务管理,spring 推荐使用 TransactionTemplate。 声明式事务: 管理建立在 AOP 之上的。 其本质是对方法前后进行拦截,然后在目标方法开始之前创建或者加入一个事务,在执行完目标方法之后根据执行情况提交或者回滚事务 。 声明式事务最大的优点就是不需要通过编程的方式管理事务,这样就不需要在业务逻辑代码中掺杂事务管理的代码, 只需在配置文件中做相关的事务规则声明 (或通过基于 @Transactional 注解的方式),便可以将事务规则应用到业务逻辑中。 显然声明式事务管理要优于编程式事务管理,这正是 spring 倡导的非侵入式的开发方式。 声明式事务管理使业务代码不受污染,一个普通的 POJO 对象,只要加上注解就可以获得完全的事务支持。 和编程式事务相比,声明式事务唯一不足地方是,后者的最细粒度只能作用到方法级别,无法做到像编程式事务那样可以作用到代码块级别。 但是即便有这样的需求,也存在很多变通的方法

Spring MVC用户注册和登录示例

半世苍凉 提交于 2019-12-01 15:17:02
原文地址: https://dzone.com/articles/spring-mvc-example-for-user-registration-and-login-1?edition=274902&utm_source=Daily%20Digest&utm_medium=email&utm_campaign=dd%202017-03-04 本文是使用几种Web开发语言和数据库设置用户注册和登录的分步指南。 通过 Ranjith Sekar · 3月03,17 · Web Dev Zone 本文是使用以下工具和技术的用户注册和登录的分步指南。 Spring框架(Core,MVC和JBDC) 2. Java 1.8 3.Maven 3.3.9 4. Eclipse IDE(Mars2) 5. MySQL 5.1 步骤1:创建Maven项目 使用Eclipse IDE,通过选择Web Archetype创建Maven项目。 步骤2:更新Pom.xml 更新你的maven依赖。 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0

SpringBoot--使用JDBC连接mysql

落花浮王杯 提交于 2019-12-01 15:14:12
1、导入包 导入mysql和springJDBC的关系依赖包 <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jdbc</artifactId> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> </dependency>      2、添加数据库配置 3、创建表 CREATE TABLE `t_user` ( `id` int(8) NOT NULL AUTO_INCREMENT COMMENT '主键自增', `username` varchar(50) NOT NULL COMMENT '用户名', `password` varchar(50) NOT NULL COMMENT '密码', PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='用户表'; 4、创建对象实体及操作数据库对象   (1)实体对象    package com.example.demo.entity; import lombok.Data; @Data

Spring JDBC - Last inserted id

天大地大妈咪最大 提交于 2019-12-01 13:11:31
I'm using Spring JDBC. Is a simple way to get last inserted ID using Spring Framework or i need to use some JDBC tricks ? jdbcTemplate.update("insert into test (name) values(?)", params, types); // last inserted id ... I found something like below, but i get: org.postgresql.util.PSQLException: Returning autogenerated keys is not supported. KeyHolder keyHolder = new GeneratedKeyHolder(); jdbcTemplate.update(new PreparedStatementCreator() { @Override public PreparedStatement createPreparedStatement( Connection connection) throws SQLException { PreparedStatement ps = connection.prepareStatement(