数据库实体类

import com.baomidou.mybatisplus.annotation.TableName;
import lombok.Data;
import lombok.EqualsAndHashCode;/*** 分子公司基本信息变更代办** @version 1.0* @date 2023/11/21 01:01*/
@EqualsAndHashCode(callSuper = true)
@Data
@TableName("ent_change_todo")
public class EntChangeTodoDO extends BaseDO {/*** id*/private Integer id;/*** 分子公司类型 （1-分公司，2-子公司）*/private Integer companyType;/*** 企业id*/private Long enterpriseId;/*** 公司名字*/private String companyName;/*** 企业类别*/private String companyCate;/*** 负责人或法人*/private String director;/*** 变更项json*/private String changeItemsJson;/*** 待办人部门名*/private String todoDeptName;/*** 待办人id*/private Long todoUserId;/*** 待办人名字*/private String todoUserName;/*** 待办状态（0-待处理, 1-同意(完成);2-驳回发起人;3-撤销）*/private Integer state;/*** 待办业务key*/private String todoKey;/*** 审批意见*/private String approvalComment;}

工具类

import com.google.common.base.CaseFormat;
import org.junit.Test;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
import org.springframework.util.StreamUtils;import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.StandardCharsets;
import java.util.regex.Matcher;
import java.util.regex.Pattern;/*** @version 1.0* @date 2023/11/29 16:31*/
public class Entity2SQLTest2 {Pattern fieldPattern = Pattern.compile("/\\**\\n\\s+\\*(\\s*(.+))\\n\\s+\\*/\\n\\s+\\w+\\s+(\\w+)\\s+(\\w+);");Pattern tableNamePattern = Pattern.compile("TableName\\(\"(\\w+)\"\\)");@Testpublic void testSQL() {String result = entity2SQL("tes.txt");System.out.println(result);}private String entity2SQL(String entityClassPath) {Resource resource = new ClassPathResource(entityClassPath);String entityClassStr;try {InputStream inputStream = resource.getInputStream();entityClassStr = StreamUtils.copyToString(inputStream, StandardCharsets.UTF_8);} catch (IOException e) {throw new IllegalStateException();}Matcher matcherTable = tableNamePattern.matcher(entityClassStr);StringBuilder sqlBuilder = new StringBuilder("CREATE TABLE  ");while (matcherTable.find()) {String tableName = matcherTable.group(1);sqlBuilder.append('`').append(tableName).append('`').append(" (\n");}Matcher matcher = fieldPattern.matcher(entityClassStr);while (matcher.find()) {String comment = matcher.group(2);String type = matcher.group(3);String fieldName = matcher.group(4);String sqlField = CaseFormat.LOWER_CAMEL.to(CaseFormat.LOWER_UNDERSCORE, fieldName);if (sqlField.equals("id")) {sqlBuilder.append("`id` BIGINT NOT NULL PRIMARY KEY AUTO_INCREMENT COMMENT '主键id',\n");continue;}sqlBuilder.append('`').append(sqlField).append('`');if ("Integer".equals(type)) {sqlBuilder.append(" INT ");}if ("Long".equals(type)) {sqlBuilder.append(" BIGINT ");}if ("String".equals(type)) {sqlBuilder.append(" VARCHAR(128) ");}if ("LocalDate".equals(type)) {sqlBuilder.append(" DATE ");}if ("LocalDateTime".equals(type) || "Date".equals(type)) {sqlBuilder.append(" DATETIME ");}if ("LocalTime".equals(type)) {sqlBuilder.append(" TIME ");}if ("Boolean".equals(type) || "boolean".equals(type)) {sqlBuilder.append(" TINYINT ");}sqlBuilder.append("DEFAULT NULL");sqlBuilder.append(" COMMENT ").append('\'').append(comment).append("',\n");}int startDel = sqlBuilder.length() - 2;int endDel = sqlBuilder.length();sqlBuilder.delete(startDel, endDel);sqlBuilder.append(");");return sqlBuilder.toString();}
}

输出结果

CREATE TABLE  `ent_change_todo` (
`id` BIGINT NOT NULL PRIMARY KEY AUTO_INCREMENT COMMENT '主键id',
`company_type` INT DEFAULT NULL COMMENT '分子公司类型 （1-分公司，2-子公司）',
`enterprise_id` BIGINT DEFAULT NULL COMMENT '企业id',
`company_name` VARCHAR(128) DEFAULT NULL COMMENT '公司名字',
`company_cate` VARCHAR(128) DEFAULT NULL COMMENT '企业类别',
`director` VARCHAR(128) DEFAULT NULL COMMENT '负责人或法人',
`change_items_json` VARCHAR(128) DEFAULT NULL COMMENT '变更项json',
`todo_dept_name` VARCHAR(128) DEFAULT NULL COMMENT '待办人部门名',
`todo_user_id` BIGINT DEFAULT NULL COMMENT '待办人id',
`todo_user_name` VARCHAR(128) DEFAULT NULL COMMENT '待办人名字',
`state` INT DEFAULT NULL COMMENT '待办状态（0-待处理, 1-同意(完成);2-驳回发起人;3-撤销）',
`todo_key` VARCHAR(128) DEFAULT NULL COMMENT '待办业务key',
`approval_comment` VARCHAR(128) DEFAULT NULL COMMENT '审批意见');