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+/*
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+ * Copyright (c) 2018-2025, lengleng All rights reserved.
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+ *
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+ * Redistribution and use in source and binary forms, with or without
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+ * modification, are permitted provided that the following conditions are met:
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+ *
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+ * Redistributions of source code must retain the above copyright notice,
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+ * this list of conditions and the following disclaimer.
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+ * Redistributions in binary form must reproduce the above copyright
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+ * notice, this list of conditions and the following disclaimer in the
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+ * documentation and/or other materials provided with the distribution.
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+ * Neither the name of the pig4cloud.com developer nor the names of its
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+ * contributors may be used to endorse or promote products derived from
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+ * this software without specific prior written permission.
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+ * Author: lengleng (wangiegie@gmail.com)
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+ */
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+
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+package com.pig4cloud.pigx.codegen.util;
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+
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+import cn.hutool.core.date.DateUtil;
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+import cn.hutool.core.io.IoUtil;
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+import cn.hutool.core.util.CharsetUtil;
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+import com.pig4cloud.pigx.codegen.entity.ColumnEntity;
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+import com.pig4cloud.pigx.codegen.entity.TableEntity;
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+import com.pig4cloud.pigx.common.core.exception.CheckedException;
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+import lombok.extern.slf4j.Slf4j;
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+import org.apache.commons.configuration.Configuration;
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+import org.apache.commons.configuration.ConfigurationException;
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+import org.apache.commons.configuration.PropertiesConfiguration;
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+import org.apache.commons.lang.StringUtils;
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+import org.apache.commons.lang.WordUtils;
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+import org.apache.velocity.Template;
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+import org.apache.velocity.VelocityContext;
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+import org.apache.velocity.app.Velocity;
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+
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+import java.io.File;
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+import java.io.IOException;
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+import java.io.StringWriter;
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+import java.util.*;
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+import java.util.zip.ZipEntry;
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+import java.util.zip.ZipOutputStream;
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+
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+/**
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+ * 代码生成器 工具类
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+ *
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+ * @author chenshun
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+ * @email sunlightcs@gmail.com
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+ * @date 2016年12月19日 下午11:40:24
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+ */
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+@Slf4j
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+public class GenUtils {
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+
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+ public static List<String> getTemplates() {
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+ List<String> templates = new ArrayList<>();
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+ templates.add("template/Entity.java.vm" );
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+ templates.add("template/Mapper.java.vm" );
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+ templates.add("template/Mapper.xml.vm" );
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+ templates.add("template/Service.java.vm" );
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+ templates.add("template/ServiceImpl.java.vm" );
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+ templates.add("template/Controller.java.vm" );
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+ templates.add("template/menu.sql.vm" );
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+
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+ templates.add("template/index.vue.vm" );
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+ templates.add("template/api.js.vm" );
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+ templates.add("template/crud.js.vm" );
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+ return templates;
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+ }
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+
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+ /**
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+ * 生成代码
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+ */
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+ public static void generatorCode(Map<String, String> table,
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+ List<Map<String, String>> columns, ZipOutputStream zip) {
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+ //配置信息
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+ Configuration config = getConfig();
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+ boolean hasBigDecimal = false;
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+ //表信息
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+ TableEntity tableEntity = new TableEntity();
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+ tableEntity.setTableName(table.get("tableName" ));
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+ tableEntity.setComments(table.get("tableComment" ));
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+ //表名转换成Java类名
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+ String className = tableToJava(tableEntity.getTableName(), config.getString("tablePrefix" ));
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+ tableEntity.setCaseClassName(className);
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+ tableEntity.setLowerClassName(StringUtils.uncapitalize(className));
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+
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+ //列信息
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+ List<ColumnEntity> columnList = new ArrayList<>();
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+ for (Map<String, String> column : columns) {
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+ ColumnEntity columnEntity = new ColumnEntity();
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+ columnEntity.setColumnName(column.get("columnName" ));
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+ columnEntity.setDataType(column.get("dataType" ));
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+ columnEntity.setComments(column.get("columnComment" ));
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+ columnEntity.setExtra(column.get("extra" ));
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+
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+ //列名转换成Java属性名
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+ String attrName = columnToJava(columnEntity.getColumnName());
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+ columnEntity.setCaseAttrName(attrName);
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+ columnEntity.setLowerAttrName(StringUtils.uncapitalize(attrName));
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+
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+ //列的数据类型,转换成Java类型
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+ String attrType = config.getString(columnEntity.getDataType(), "unknowType" );
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+ columnEntity.setAttrType(attrType);
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+ if (!hasBigDecimal && attrType.equals("BigDecimal" )) {
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+ hasBigDecimal = true;
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+ }
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+ //是否主键
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+ if ("PRI".equalsIgnoreCase(column.get("columnKey" )) && tableEntity.getPk() == null) {
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+ tableEntity.setPk(columnEntity);
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+ }
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+
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+ columnList.add(columnEntity);
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+ }
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+ tableEntity.setColumns(columnList);
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+
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+ //没主键,则第一个字段为主键
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+ if (tableEntity.getPk() == null) {
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+ tableEntity.setPk(tableEntity.getColumns().get(0));
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+ }
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+
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+ //设置velocity资源加载器
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+ Properties prop = new Properties();
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+ prop.put("file.resource.loader.class", "org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader" );
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+ Velocity.init(prop);
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+ String mainPath = config.getString("mainPath" );
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+ mainPath = StringUtils.isBlank(mainPath) ? "com.pig4cloud.pigx" : mainPath;
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+ //封装模板数据
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+ Map<String, Object> map = new HashMap<>();
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+ map.put("tableName", tableEntity.getTableName());
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+ map.put("comments", tableEntity.getComments());
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+ map.put("pk", tableEntity.getPk());
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+ map.put("className", tableEntity.getCaseClassName());
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+ map.put("classname", tableEntity.getLowerClassName());
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+ map.put("pathName", tableEntity.getLowerClassName().toLowerCase());
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+ map.put("columns", tableEntity.getColumns());
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+ map.put("hasBigDecimal", hasBigDecimal);
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+ map.put("mainPath", mainPath);
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+ map.put("package", config.getString("package" ));
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+ map.put("moduleName", config.getString("moduleName" ));
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+ map.put("author", config.getString("author" ));
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+ map.put("datetime", DateUtil.now());
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+ VelocityContext context = new VelocityContext(map);
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+
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+ //获取模板列表
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+ List<String> templates = getTemplates();
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+ for (String template : templates) {
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+ //渲染模板
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+ StringWriter sw = new StringWriter();
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+ Template tpl = Velocity.getTemplate(template, CharsetUtil.UTF_8);
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+ tpl.merge(context, sw);
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+
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+ try {
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+ //添加到zip
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+ zip.putNextEntry(new ZipEntry(Objects
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+ .requireNonNull(getFileName(template, tableEntity.getCaseClassName()
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+ , config.getString("package" ), config.getString("moduleName" )))));
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+ IoUtil.write(zip, CharsetUtil.UTF_8, false, sw.toString());
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+ IoUtil.close(sw);
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+ zip.closeEntry();
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+ } catch (IOException e) {
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+ throw new CheckedException("渲染模板失败,表名:" + tableEntity.getTableName(), e);
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+ }
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+ }
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+ }
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+
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+
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+ /**
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+ * 列名转换成Java属性名
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+ */
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+ private static String columnToJava(String columnName) {
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+ return WordUtils.capitalizeFully(columnName, new char[]{'_'}).replace("_", "" );
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+ }
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+
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+ /**
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+ * 表名转换成Java类名
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+ */
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+ private static String tableToJava(String tableName, String tablePrefix) {
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+ if (StringUtils.isNotBlank(tablePrefix)) {
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+ tableName = tableName.replace(tablePrefix, "" );
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+ }
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+ return columnToJava(tableName);
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+ }
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+
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+ /**
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+ * 获取配置信息
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+ */
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+ public static Configuration getConfig() {
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+ try {
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+ return new PropertiesConfiguration("generator.properties" );
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+ } catch (ConfigurationException e) {
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+ throw new CheckedException("获取配置文件失败,", e);
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+ }
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+ }
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+
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+ /**
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+ * 获取文件名
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+ */
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+ public static String getFileName(String template, String className, String packageName, String moduleName) {
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+ String packagePath = "pigx" + File.separator + "main" + File.separator + "java" + File.separator;
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+ if (StringUtils.isNotBlank(packageName)) {
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+ packagePath += packageName.replace(".", File.separator) + File.separator + moduleName + File.separator;
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+ }
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+
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+ if (template.contains("Entity.java.vm" )) {
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+ return packagePath + "entity" + File.separator + className + ".java";
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+ }
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+
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+ if (template.contains("Mapper.java.vm" )) {
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+ return packagePath + "mapper" + File.separator + className + "Mapper.java";
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+ }
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+
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+ if (template.contains("Service.java.vm" )) {
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+ return packagePath + "service" + File.separator + className + "Service.java";
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+ }
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+
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+ if (template.contains("ServiceImpl.java.vm" )) {
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+ return packagePath + "service" + File.separator + "impl" + File.separator + className + "ServiceImpl.java";
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+ }
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+
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+ if (template.contains("Controller.java.vm" )) {
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+ return packagePath + "controller" + File.separator + className + "Controller.java";
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+ }
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+
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+ if (template.contains("Mapper.xml.vm" )) {
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+ return "pigx" + File.separator + "main" + File.separator + "resources" + File.separator + "mapper" + File.separator + moduleName + File.separator + className + "Mapper.xml";
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+ }
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+
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+ if (template.contains("menu.sql.vm" )) {
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+ return className.toLowerCase() + "_menu.sql";
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+ }
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+
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+ if (template.contains("index.vue.vm" )) {
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+ return "pigx-ui" + File.separator + "src" + File.separator + "views" +
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+ File.separator + moduleName + File.separator + className.toLowerCase() + File.separator + "index.vue";
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+ }
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+
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+ if (template.contains("api.js.vm" )) {
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+ return "pigx-ui" + File.separator + "src" + File.separator + "api" + File.separator + className.toLowerCase() + ".js";
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+ }
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+
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+ if (template.contains("crud.js.vm" )) {
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+ return "pigx-ui" + File.separator + "src" + File.separator + "const" +
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+ File.separator + "curd" + File.separator + className.toLowerCase() + ".js";
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+ }
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+
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+ return null;
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+ }
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+}
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