SpringBoot+Mybatis+MySql 自动生成代码 自动分页

SpringBoot+Mybatis+MySql 自动生成代码 自动分页

一、配置文件


        <dependency>
            <groupId>tk.mybatisgroupId>
            <artifactId>mapper-spring-boot-starterartifactId>
            <version>1.1.5version>
        dependency>
        
        <dependency>
            <groupId>com.github.pagehelpergroupId>
            <artifactId>pagehelper-spring-boot-starterartifactId>
            <version>1.2.5version>
        dependency>

            <plugin>
                <groupId>org.mybatis.generatorgroupId>
                <artifactId>mybatis-generator-maven-pluginartifactId>
                <version>1.3.5version>
                <dependencies>
                    <dependency>
                        <groupId>mysqlgroupId>
                        <artifactId>mysql-connector-javaartifactId>
                        <version>5.1.34version>
                    dependency>
                    <dependency>
                        <groupId>tk.mybatisgroupId>
                        <artifactId>mapperartifactId>
                        <version>3.4.4version>
                    dependency>
                dependencies>
                <executions>
                    <execution>
                        <id>Generate MyBatis Artifactsid>
                        <phase>packagephase>
                        <goals>
                            <goal>generategoal>
                        goals>
                    execution>
                executions>
                <configuration>
                    
                    <verbose>trueverbose>
                    
                    <overwrite>trueoverwrite>
                    
                    <configurationFile>src/main/resources/mybatis-generator.xmlconfigurationFile>
                configuration>
            plugin>
spring:
  profiles:
    active: dev

logging:
  config: classpath:xml/logback-boot.xml

mybatis:
  # type-aliases扫描路径
  type-aliases-package: com.czhappy.wanmathapi.entity
  # mapper xml实现扫描路径
  mapper-locations: classpath:mapper/*.xml
  property:
    order: BEFORE

#mappers 多个接口时逗号隔开
mapper:
  mappers: com.czhappy.wanmathapi.config.MyMapper
  not-empty: false
  identity: mysql

#pagehelper分页配置 第二种和第三种不需要 重点讲的第一种需要
pagehelper:
  helperDialect: mysql
  reasonable: false
  supportMethodsArguments: true
  params: count=countSql

 

二、Dao配置

自定义MyMapper,作为dao的父类,此文件不要和其他dao文件放一起,防止扫描时有影响,单独建个文件夹。

package com.czhappy.wanmathapi.config;

import tk.mybatis.mapper.common.Mapper;
import tk.mybatis.mapper.common.MySqlMapper;

public interface MyMapper extends Mapper, MySqlMapper {

}

三、service配置

package com.czhappy.wanmathapi.service;

import org.springframework.stereotype.Service;

import java.util.List;

@Service
public interface IService {

    List selectAll();

    T selectByKey(Object key);

    int save(T entity);

    int delete(Object key);

    int updateAll(T entity);

    int updateNotNull(T entity);

    List selectByExample(Object example);
}
package com.czhappy.wanmathapi.service.impl;

import com.czhappy.wanmathapi.service.IService;
import org.springframework.beans.factory.annotation.Autowired;
import tk.mybatis.mapper.common.Mapper;

import java.util.List;

public abstract class BaseService implements IService {

    @Autowired
    protected Mapper mapper;

    public Mapper getMapper() {
        return mapper;
    }

    @Override
    public List selectAll() {
        //说明:查询所有数据
        return mapper.selectAll();
    }

    @Override
    public T selectByKey(Object key) {
        //说明:根据主键字段进行查询,方法参数必须包含完整的主键属性,查询条件使用等号
        return mapper.selectByPrimaryKey(key);
    }

    @Override
    public int save(T entity) {
        //说明:保存一个实体,null的属性也会保存,不会使用数据库默认值
        return mapper.insert(entity);
    }

    @Override
    public int delete(Object key) {
        //说明:根据主键字段进行删除,方法参数必须包含完整的主键属性
        return mapper.deleteByPrimaryKey(key);
    }

    @Override
    public int updateAll(T entity) {
        //说明:根据主键更新实体全部字段,null值会被更新
        return mapper.updateByPrimaryKey(entity);
    }

    @Override
    public int updateNotNull(T entity) {
        //根据主键更新属性不为null的值
        return mapper.updateByPrimaryKeySelective(entity);
    }

    @Override
    public List selectByExample(Object example) {
        //说明:根据Example条件进行查询
        //重点:这个查询支持通过Example类指定查询列,通过selectProperties方法指定查询列
        return mapper.selectByExample(example);
    }
}

四、自动生成代码mybatis-generator.xml

xml version="1.0" encoding="UTF-8"?>
DOCTYPE generatorConfiguration
        PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
        "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
<generatorConfiguration>

    <context id="mysql" targetRuntime="MyBatis3Simple" defaultModelType="flat">

        <plugin type="tk.mybatis.mapper.generator.MapperPlugin">
            <property name="mappers" value="com.czhappy.wanmathapi.config.MyMapper"/>
            
            <property name="caseSensitive" value="false"/>
        plugin>

        
        <commentGenerator>
            <property name="javaFileEncoding" value="UTF-8"/>
            <property name="suppressDate" value="true"/>
            <property name="suppressAllComments" value="true"/>
        commentGenerator>

        
        <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/wanmath"
                        userId="root" password="root">
        jdbcConnection>

        <javaTypeResolver>
            <property name="forceBigDecimals" value="false"/>
        javaTypeResolver>

        
        <javaModelGenerator targetPackage="com.czhappy.wanmathapi.entity" targetProject="src/main/java">
            <property name="enableSubPackages" value="true"/>
            <property name="trimStrings" value="true"/>
        javaModelGenerator>

        
        <sqlMapGenerator targetPackage="mapper" targetProject="src/main/resources">
            <property name="enableSubPackages" value="true"/>
        sqlMapGenerator>

        
        
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.czhappy.wanmathapi.mapper" targetProject="src/main/java">
            <property name="enableSubPackages" value="true"/>
        javaClientGenerator>

        
        <table tableName="sys_dict" domainObjectName="SysDict" enableCountByExample="false" enableUpdateByExample="false"
               enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false">
            <generatedKey column="id" sqlStatement="mysql" identity="true"/>
        table>
    context>
generatorConfiguration>

五、目录结构

SpringBoot+Mybatis+MySql 自动生成代码 自动分页_第1张图片

SpringBoot+Mybatis+MySql 自动生成代码 自动分页_第2张图片

双击生成实体类、mapper、dao相关代码:

SpringBoot+Mybatis+MySql 自动生成代码 自动分页_第3张图片

posted @ 2019-06-04 10:31 chenzheng8975 阅读( ...) 评论( ...) 编辑 收藏

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