Programmer Group

Wrong information org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.binding.BindingException: Parameter '0' not found. Available parameters are [arg1, arg0, param1, param2] at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:77) at org.mybatis.spring.SqlS ...

Implement paging: there are two ways: traditional paging and classification based on pageHelper plug-in. The latter is recommended First, create a pageUtil tool manually to record all kinds of information of paging, and then use the tedious way to call data pageUtil class can be customized as required package com.imooc.project.util; /** ...

Objectives of this paper: Using the pure Mybatis framework to obtain data; Clarify the working process of Mybatis. Create project and run First, create maven project, and the process will not be repeated. The dependence is as follows: <dependencies> <dependency> <groupId>org.mybatis</groupId> <artifa ...

Preface MyBatis provides a powerful extension function, that is, the plugins function of MyBatis. MyBatis allows you to intercept and call at a point during the execution of mapped statements. After interception, you can add some customized functions to existing methods, such as common page splitting functions. When you try to modify or rewrit ...

Spring security integration OAuth2 is recognized by developers as the best matching partner for resource protection and service authentication. This pair of good friends have been quietly guarding the security of application services. According to the different roles of visitors, they can control the granularity to specific interfaces, so as to ...

springboot is very simple to start a transaction, only one annotation is needed @Transactional Just fine. Because in springboot, events have been enabled for jpa, jdbc and mybatis by default. When they are introduced, things will be enabled by default. Of course, if you need to use other orm, such as beatlsql, you need to configure the relevant ...

Function: query a data list and each data contains its own sub data set Usage scenario: 1. When multiple order data needs to be queried and order details need to be included in the order data at the same time 2. When you need to query multiple comment data and include comment reply data in the comment data at the same time F ...

As for automatic code generation, there are many tools and different methods on the Internet. MyBatis is the first automatic code generator I have come into contact with. It's relatively simple, with less code, and it's easy to understand. After that, I won't talk about much nonsense. Let's talk about the implementation method and code explanat ...

I. Introduction Official website: http://www.mybatis.org/generator/index.html By using the official mapper auto generation tool, mybatis-generator-core-1.3.2, po classes and mapper mapping files are automatically generated. Function: mybatis officially provides reverse engineering, which can be used to automatically generate Mapper interface, m ...

(V) springboot integrates the thmeleaf template to realize simple login 1. Modify the user table in the note in the previous section, add a password field, and require the username to be UNIQUE to realize login verification. The table structure is as follows.   CREATE TABLE `user` ( `id` int(11) unsigned NOT NULL AUTO_INCREMENT, `name` var ...