mybatis-plus逆向code generator pgsql实践

环境准备

重要工具的版本

1. jdk1.8.0_131
2. springboot 2.7.6
3. mybatis-plus 3.5.7
4. pgsql 14.15

供参考pom依赖

<?xml version="1.0" encoding="UTF-8"?>
<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/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>com.tgh</groupId><artifactId>parent-demo</artifactId><version>0.0.1-SNAPSHOT</version><name>parent-demo</name><description>parent-demo</description><modules><module>security-demo</module></modules><properties><java.version>1.8</java.version><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding><spring-boot.version>2.7.6</spring-boot.version></properties><packaging>pom</packaging><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-security</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-thymeleaf</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.thymeleaf.extras</groupId><artifactId>thymeleaf-extras-springsecurity5</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-devtools</artifactId><scope>runtime</scope><optional>true</optional></dependency><dependency><groupId>org.postgresql</groupId><artifactId>postgresql</artifactId><scope>runtime</scope></dependency><dependency><groupId>com.baomidou</groupId><artifactId>mybatis-plus-boot-starter</artifactId><version>3.5.7</version></dependency><dependency><groupId>com.baomidou</groupId><artifactId>mybatis-plus-generator</artifactId><version>3.5.7</version></dependency><dependency><groupId>com.github.xiaoymin</groupId><artifactId>knife4j-openapi2-spring-boot-starter</artifactId><version>4.4.0</version></dependency><dependency><groupId>org.freemarker</groupId><artifactId>freemarker</artifactId><version>2.3.30</version></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><optional>true</optional></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency><dependency><groupId>org.springframework.security</groupId><artifactId>spring-security-test</artifactId><scope>test</scope></dependency><dependency><groupId>com.alibaba.fastjson2</groupId><artifactId>fastjson2</artifactId><version>2.0.51</version></dependency></dependencies><dependencyManagement><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-dependencies</artifactId><version>${spring-boot.version}</version><type>pom</type><scope>import</scope></dependency></dependencies></dependencyManagement><build><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><version>3.8.1</version><configuration><source>1.8</source><target>1.8</target><encoding>UTF-8</encoding></configuration></plugin><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><version>${spring-boot.version}</version><configuration><mainClass>com.tgh.parentdemo.ParentDemoApplication</mainClass><skip>true</skip></configuration><executions><execution><id>repackage</id><goals><goal>repackage</goal></goals></execution></executions></plugin></plugins></build></project>

待逆向的SQL

-- 文档主表
CREATE TABLE t_document_m (doc_m_id varchar(32) COLLATE pg_catalog.default NOT NULL,doc_m_name varchar(100) COLLATE pg_catalog.default,relate_biz_id varchar(32) COLLATE pg_catalog.default,create_time timestamp(0),create_by_uuid varchar(32) COLLATE pg_catalog.default,create_by_account varchar(32) COLLATE pg_catalog.default,create_by_name varchar(100) COLLATE pg_catalog.default,last_update_time timestamp(0),last_update_uuid varchar(32) COLLATE pg_catalog.default,last_update_account varchar(32) COLLATE pg_catalog.default,last_update_name varchar(100) COLLATE pg_catalog.default,CONSTRAINT t_document_m_pkey PRIMARY KEY (doc_m_id)
)
;COMMENT ON COLUMN t_document_m.doc_m_id IS '文档主表ID';COMMENT ON COLUMN t_document_m.doc_m_name IS '文档主表名称';COMMENT ON COLUMN t_document_m.relate_biz_id IS '关联业务ID';COMMENT ON COLUMN t_document_m.create_time IS '创建时间';COMMENT ON COLUMN t_document_m.create_by_uuid IS '创建人uuid';COMMENT ON COLUMN t_document_m.create_by_account IS '创建人账号';COMMENT ON COLUMN t_document_m.create_by_name IS '创建人名称';COMMENT ON COLUMN t_document_m.last_update_time IS '最后更新时间';COMMENT ON COLUMN t_document_m.last_update_uuid IS '最后跟新人uuid';COMMENT ON COLUMN t_document_m.last_update_account IS '最后更新人账号';COMMENT ON COLUMN t_document_m.last_update_name IS '最后更新人名称';COMMENT ON TABLE t_document_m IS '文档主表';-- 文档明细表
CREATE TABLE t_document_d (doc_d_id varchar(32) COLLATE pg_catalog.default NOT NULL,doc_m_id varchar(32) COLLATE pg_catalog.default,doc_d_name varchar(255) COLLATE pg_catalog.default,file_id varchar(32) COLLATE pg_catalog.default,file_name varchar(100) COLLATE pg_catalog.default,file_suffix varchar(10) COLLATE pg_catalog.default,file_size varchar(10) COLLATE pg_catalog.default,create_time timestamp(0),create_by_uuid varchar(32) COLLATE pg_catalog.default,create_by_account varchar(32) COLLATE pg_catalog.default,create_by_name varchar(100) COLLATE pg_catalog.default,last_update_time timestamp(0),last_update_uuid varchar(32) COLLATE pg_catalog.default,last_update_account varchar(32) COLLATE pg_catalog.default,last_update_name varchar(100) COLLATE pg_catalog.default,CONSTRAINT t_document_d_pkey PRIMARY KEY (doc_d_id)
)
;COMMENT ON COLUMN t_document_d.doc_d_id IS '文档明细ID';COMMENT ON COLUMN t_document_d.doc_m_id IS '文档主表ID';COMMENT ON COLUMN t_document_d.doc_d_name IS '文档主表名称';COMMENT ON COLUMN t_document_d.file_id IS '文件业务ID';COMMENT ON COLUMN t_document_d.file_name IS '文件名称';COMMENT ON COLUMN t_document_d.file_suffix IS '文件后缀';COMMENT ON COLUMN t_document_d.file_size IS '单位kb';COMMENT ON COLUMN t_document_d.create_time IS '创建时间';COMMENT ON COLUMN t_document_d.create_by_uuid IS '创建人uuid';COMMENT ON COLUMN t_document_d.create_by_account IS '创建人账号';COMMENT ON COLUMN t_document_d.create_by_name IS '创建人名称';COMMENT ON COLUMN t_document_d.last_update_time IS '最后更新时间';COMMENT ON COLUMN t_document_d.last_update_uuid IS '最后跟新人uuid';COMMENT ON COLUMN t_document_d.last_update_account IS '最后更新人账号';COMMENT ON COLUMN t_document_d.last_update_name IS '最后更新人名称';COMMENT ON TABLE t_document_d IS '文档明细表';

配置文件

CodeGenerator配置类

参考代码生成器的快速生成

package com.mapper;import com.baomidou.mybatisplus.generator.FastAutoGenerator;
import com.baomidou.mybatisplus.generator.config.OutputFile;
import com.baomidou.mybatisplus.generator.config.rules.DbColumnType;
import com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine;import java.sql.Types;
import java.util.Collections;/*** @author PineTree* @description: TODO* @date 2025/2/12 22:56*/
public class CodeGenerator {public static void main(String[] args) {FastAutoGenerator.create("jdbc:postgresql://192.168.32.155:8848/security-demo", "postgres", "postgres").globalConfig(builder -> {builder.author("PineTree") // 设置作者.enableSwagger() // 开启 swagger 模式.outputDir("F:\\Development-files\\Java\\parent-demo\\security-demo\\src\\main\\java"); // 指定输出目录}).dataSourceConfig(builder ->builder.typeConvertHandler((globalConfig, typeRegistry, metaInfo) -> {int typeCode = metaInfo.getJdbcType().TYPE_CODE;if (typeCode == Types.SMALLINT) {// 自定义类型转换return DbColumnType.INTEGER;}return typeRegistry.getColumnType(metaInfo);})).packageConfig(builder ->builder.parent("com.tgh") // 设置父包名.moduleName("securitydemo") // 设置父包模块名.pathInfo(Collections.singletonMap(OutputFile.xml, "F:\\Development-files\\Java\\parent-demo\\security-demo\\src\\main\\resources\\mapper")) // 设置mapperXml生成路径).strategyConfig(builder ->builder.addInclude("t_document_d", "t_document_m") // 设置需要生成的表名.addTablePrefix("t_", "c_") // 设置过滤表前缀).templateEngine(new FreemarkerTemplateEngine()) // 使用Freemarker引擎模板，默认的是Velocity引擎模板.execute();}
}

配置类说明

运行后会在指定的目录和包下生成class和xml文件，一般情况下，只需要修改这六处地方即可，若有进一步需求，后续补充

本博客设计到的代码commit记录可参考：
码云