jackson mapper

First, the development of normsYou need to write the Mapper.xml mapping file (this project is usermapper.xml, similar to the previous user.xml).Writing mapper interfaces requires following some development specifications, so that MyBatis can automatically generate mapper interfaces to implement proxy objects.1. Namespace equals Mapper interface address in Usermap

One. MyBatis Default support aliases Alias Types of mappings _byte Byte _long Long _short Short _int Int _integer Int _double Double _float Float _boolean Boolean String String Byte Byte Long Long Short Short Int Integer

MyBatis Generator IntroductionMyBatis Generator Chinese Document http://mbg.cndocs.tk/MyBatis Generator (MBG) is a MyBatis code generator MyBatis and IBATIS. He can generate code for each version of MyBatis, and Ibatis 2.2.0 later code. He can introspect the database's tables (or tables) and then generate the underlying objects that can be used to access (multiple) tables. This makes it unnecessary to create objects and configuration files when interacting with database tables. MBG solves some s

In the example used in the previous chapter http://www.cnblogs.com/EasonJim/p/7083165.html, the Decorators.xml file is converted via URL matching.The following method is converted through the Sitemesh.xml pagedecoratormapper mapper without matching the URL, just specify the template in the Meta header decorator.Here are the steps to proceed:1. Add the Pagedecoratormapper Mapper to the Sitemesh.xml and speci

The use and principle analysis of mapper mapping configuration in Sqlsessionfactory sessionfactory = null; String resource = "Mybatisconfig.xml"; try { sessionfactory = new Sqlsessionfactorybuilder (). Build (Resources . Getresourceasreader (Resource)); } catch (IOException e) { e.printstacktrace (); }So let's start with Sqlsessionfactorybuilder and look at the MyBatis loading proces

Integrate with Springboot with the MyBatis official starter There is no problem starting the project in the IDE, but the following exception occurs when you hit the Jar startup project: 15:51:43.909 [main] DEBUG O.s.b.d.loggingfailureanalysisreporter-application failed to start due to an exception org . Springframework.beans.factory.NoSuchBeanDefinitionException:No qualifying Bean found for dependency [ Org.zbt.service.jxc.dao.base.DataDicMapper]: Expected at least 1 bean which qualifies as Au

AutoMapper. Mapper. CreateMap reports "System. NullReferenceException: the object reference is not set to the instance of the object ." Recurrence of exceptions, Navigation: > I. problems during the National Day holiday > II. An exception occurs again on weekends. > III. troubleshooting > IV. Abnormal Replay > V. Post-repair monitoring > VI. End I. TOP problems during the National Day holiday During the National Day holiday-July 22, October 5-the paym

The mapping file is loaded via the Mapper interface, which is important for the integration of the following SSM three frameworks. So what is loading the mapping file via the Mapper interface?We first look at the previous practice, in the global configuration file Mybatis-configuration.xml through the Previous practice:　　Improved practice: Use the Mapper interfac

At first , my profile was under/mapper under the same name, causing only the mapper file in one jar to be read. The first solution is as follows:1. Place the mapper file in a directory that cannot be placed in the same name.For example: User.jar placed under the/user, Common.jar placed under the common2. Configure in spring (remember: classpath followed by *)Bea

One of the statementtype:statement,prepared or callable. This allows MyBatis to use statement,preparedstatement or CallableStatement, respectively, with the default value: PREPARED.XML version= "1.0" encoding= "UTF-8"?>DOCTYPE Mapper Public "-//mybatis.org//dtd mapper 3.0//en" "Http://mybatis.org/dtd/mybatis-3-mapper.dtd ">Mappernamespace= "Com.fujitsu.tti.biz.f64.dao.itpdb.F64GoodsInfoSelectDao"> Se

existence of dispatcherservlet greatly reduces the coupling between the components2.HandlerMapping Processor MapperRecord URL and processor mappings in the form of annotations, XML configuration, etc.3.HandLer processorBack-end controllers (popular point: The business code written by the controller layer). Processing a user's request4.HandlerAdapter Processor AdapterThe processor is executed through the Handleradapter, which is an application of the adapter pattern that can be performed on more

MyBatis Mapper XML file-mapping and parameters The true strength of MyBatis lies in its mapping statement and its magic. Because of its exceptional power, the mapper's XML file appears relatively simple. If you compare it to a JDBC code that has the same functionality, you'll immediately find that you've skipped nearly 95% of the code. MyBatis is built for SQL and is better than normal methods. The SQL mapping file has a few top-level elements (in t

1, POM Dependency> groupId>org.mybatis.spring.bootgroupId> Artifactid>mybatis-spring-boot-starterArtifactid> version>1.3.0version> Dependency> Dependency> groupId>org.springframework.bootgroupId> Artifactid>spring-boot-starter-jdbcArtifactid> Exclusions> exclusion> groupId>org.apache.tomcatgroupId> Artifactid>tomcat-jdbcArtifactid> exclusion> Exclusions> Dependency> 2. Define DataSource Bean 3, Application.properties mybatis.mapper-locations=classpath*: