ibatis

MySQL fetching a key value pair which are in two different columns

由 感情迁移 提交于 2019-12-25 04:13:10
问题 Table1 : Has 3 columns say id, key & value. +----+-----+-------+ | ID | KEY | VALUE | +----+-----+-------+ | 1 | 1 | 1 | | 2 | 1 | 2 | | 3 | 2 | 1 | | 4 | 2 | 2 | | 5 | 3 | 1 | | 6 | 3 | 2 | | 7 | 4 | 1 | | 8 | 4 | 2 | | 9 | 5 | 1 | | 10 | 5 | 2 | +----+-----+-------+ This table key and value both can be repeated but the combination of both is unique. If I want to query for multiple rows based on the key value pair and NOT on id. How can I do that ? NOTE : I know I can do this SELECT * from

赶紧的，用户已经打电话来投诉线上出问题了

由 耗尽温柔 提交于 2019-12-25 02:32:35
出bug了 如标题所示，用户资金获取失败，线上某个服务通过dubbo调用接口都返回异常。 赶紧连上服务器看日志，进去一看吓到了。 Cause : java . sql . SQLException : connection holder is null ; uncategorized SQLException for SQL [ ] ; SQL state [ null ] ; error code [ 0 ] ; connection holder is null ; nested exception is java . sql . SQLException : connection holder is null at org . springframework . jdbc . support . AbstractFallbackSQLExceptionTranslator . translate ( AbstractFallbackSQLExceptionTranslator . java : 84 ) at org . springframework . jdbc . support . AbstractFallbackSQLExceptionTranslator . translate ( AbstractFallbackSQLExceptionTranslator .

is this possible to do with iBatis + spring

由 我是研究僧i 提交于 2019-12-24 16:33:04
问题 usual idiom of using ibatis with spring support is following. Or this is how I'm doing it. please let me know if it can be done a better way? beans xml: <bean id="DataSource" class="org.springframework.jndi.JndiObjectFactoryBean"> <property name="jndiName" value="jdbc/some/som1/my/mydb"/> </bean> <bean id="SqlMapClient" class="org.springframework.orm.ibatis.SqlMapClientFactoryBean"> <property name="configLocation" value="classpath:sql-map-config-oracle.xml"/> <property name="dataSource" ref=

How to create an SQL In Clause in IBatis 2 for an SQL Update or SQL Select Statement with Parameterclass Map

由 你。 提交于 2019-12-24 11:20:17
问题 I have some problemd by using the IBatis framework. I use IBatis 2 and now I tried to execute an SQL select and SQL update statement, which works with the parameterClass "java.util.Map" and an IBatis iterator tag. But now it seems, that these two component doesn´t work together. If I use only a Java List with the IBatis Iterator tag inside a SQL select statement, it works fine. If I use only a Java List with the IBatis Iterator tag inside a SQL updatestatement, it doesn´t works. It is

ibatis domain modelling

由 a 夏天 提交于 2019-12-24 07:39:12
问题 I am working on the domain model for a project. I have a class named user that has a class named UserType as one of the properties. I know when I want to select all users, I will use joins to pick up all corresponding usertypes. How do I do inserts? Do I have to write a handler for userType? Or can I do something like INSERT INTO users(... usertype_id ...) VALUES(... #{usertype.usertype_id}...) Please help; I have spent the whole day trying to figure this out. I am using ibatis 3.0 and I am

Spring: replace SqlMapClientTemplate for all clients?

由 ＊爱你＆永不变心＊ 提交于 2019-12-24 07:05:50
问题 I have a number of DAO classes that extend SqlMapClientDaoSupport, and call getSqlMapClientTemplate() to run iBatis queries. For a particular test, I wish to replace the object returned when each DAO calls getSqlMapClientTemplate() , with my own custom class. How can I do this? I know that there is a setSqlMapClientTemplate( org.springframework.orm.ibatis.SqlMapClientTemplate ) ; however this presents two problems. 1) I wish the replacement to be "global" to my Spring configuration; I don't

SSM框架——详细整合教程（Spring+SpringMVC+MyBatis）

由 给你一囗甜甜゛ 提交于 2019-12-24 03:45:28
最近在学习Spring+SpringMVC+MyBatis的整合。以下是参考网上的资料自己实践操作的详细步骤。 1、基本概念 1.1、Spring Spring是一个开源框架，Spring是于2003 年兴起的一个轻量级的Java 开发框架，由Rod Johnson 在其著作Expert One-On-One J2EE Development and Design中阐述的部分理念和原型衍生而来。它是为了解决企业应用开发的复杂性而创建的。Spring使用基本的JavaBean来完成以前只可能由EJB完成的事情。然而，Spring的用途不仅限于服务器端的开发。从简单性、可测试性和松耦合的角度而言，任何Java应用都可以从Spring中受益。 简单来说，Spring是一个轻量级的控制反转（IoC）和面向切面（AOP）的容器框架。 1.2、SpringMVC Spring MVC属于SpringFrameWork的后续产品，已经融合在Spring Web Flow里面。Spring MVC 分离了控制器、模型对象、分派器以及处理程序对象的角色，这种分离让它们更容易进行定制。 1.3、MyBatis MyBatis 本是apache的一个开源项目iBatis, 2010年这个项目由apache software foundation 迁移到了google code，并且改名为MyBatis

Accessing Datasource from Outside A Web Container (through JNDI)

由 こ雲淡風輕ζ 提交于 2019-12-23 22:29:19
问题 I'm trying to access a data source that is defined within a web container (JBoss) from a fat client outside the container. I've decided to look up the data source through JNDI. Actually, my persistence framework (Ibatis) does this. When performing queries I always end up getting this error: java.lang.IllegalAccessException: Method=public abstract java.sql.Connection java.sql.Statement.getConnection() throws java.sql.SQLException does not return Serializable Stacktrace: org.jboss.resource

IBatis + Java: Retrieving HashMap

由 会有一股神秘感。 提交于 2019-12-23 15:58:50
问题 How can I retrieve a HashMap using IBatis. I have a select for two values, and I want to maps this in a key-value map. Someone has faced the same problem? Thanks in advance 回答1: See this Question: How to get a sorted result in iBatis? The user there gets a HashMap but needs a list, hence my answer there. So you can use the example in that Question description to retrieve a HashMap as he did. 来源： https://stackoverflow.com/questions/3353526/ibatis-java-retrieving-hashmap

oracle like 条件拼接

由 对着背影说爱祢 提交于 2019-12-23 11:21:12
（1） ibatis xml配置：下面的写法只是简单的转义 namelike '%$name$%' （2） 这时会导致sql注入问题，比如参数name传进一个单引号“'”，生成的sql语句会是：name like '%'%' （3） 解决方法是利用字符串连接的方式来构成sql语句 name like '%'||'#name#'||'%' （4） 这样参数都会经过预编译，就不会发生sql注入问题了。 （5） #与$区别: #xxx# 代表xxx是属性值,map里面的key或者是你的pojo对象里面的属性,ibatis会自动在它的外面加上引号,表现在sql语句是这样的 where xxx = 'xxx' ; $xxx$ 则是把xxx作为字符串拼接到你的sql语句中, 比如 order by topicId , 语句这样写 ... order by #xxx#，ibatis 就会把他翻译成 order by 'topicId' （这样就会报错） 语句这样写 ... order by $xxx$ibatis 就会把他翻译成 order by topicId SELECT * FROM user WHERE username like '%$username$%' 的安全写法 Sql代码 SELECT * FROM user WHERE username like '%' ||
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