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+package com.yami.shop.generator.util;
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+
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+import cn.hutool.core.date.DateUtil;
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+import cn.hutool.core.io.FileUtil;
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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.yami.shop.generator.entity.ColumnEntity;
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+import com.yami.shop.generator.entity.CommonConstants;
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+import com.yami.shop.generator.entity.TableEntity;
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+import lombok.experimental.UtilityClass;
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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.StringWriter;
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+import java.util.*;
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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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+@Slf4j
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+@UtilityClass
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+public class GenUtils {
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+
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+ private final String ENTITY_JAVA_VM = "Model.java.vm";
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+ private final String MAPPER_JAVA_VM = "Mapper.java.vm";
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+ private final String SERVICE_JAVA_VM = "Service.java.vm";
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+ private final String SERVICE_IMPL_JAVA_VM = "ServiceImpl.java.vm";
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+ private final String CONTROLLER_JAVA_VM = "Controller.java.vm";
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+ private final String MAPPER_XML_VM = "Mapper.xml.vm";
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+ private final String MENU_SQL_VM = "menu.sql.vm";
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+ private final String INDEX_VUE_VM = "index.vue.vm";
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+ private final String ADD_OR_UPDATE_VUE_VM = "add-or-update.vue.vm";
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+
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+ private List<String> getTemplates() {
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+ List<String> templates = new ArrayList<>();
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+ templates.add("template/Model.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/add-or-update.vue.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 void generatorCode(Map<String, String> table,
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+ List<Map<String, String>> columns) {
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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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+
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+
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+ tableEntity.setComments(table.get("tableComment"));
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+
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+ String tablePrefix = config.getString("tablePrefix");
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+
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+ //表名转换成Java类名
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+ String midName = tableToMid(tableEntity.getTableName(), tablePrefix);
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+ tableEntity.setMidName(midName);
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+ String className = tableToJava(tableEntity.getTableName(), 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 && "BigDecimal".equals(attrType)) {
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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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+ //封装模板数据
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+ Map<String, Object> map = new HashMap<>(16);
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+ map.put("tableName", tableEntity.getTableName());
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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("midName", tableEntity.getMidName());
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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("datetime", DateUtil.now());
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+
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+
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+ map.put("comments", tableEntity.getComments());
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+
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+ map.put("author", config.getString("author"));
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+
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+
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+ map.put("moduleName", config.getString("moduleName"));
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+
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+
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+ map.put("package", config.getString("package"));
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+ map.put("mainPath", config.getString("mainPath"));
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+
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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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+
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+ File file = new File(config.getString("rootPath") + getFileName(template, tableEntity.getCaseClassName()
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+ , tableEntity.getMidName(), map.get("moduleName").toString()));
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+ if (file.exists()) {
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+ file.delete();
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+ }
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+
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+ FileUtil.writeString(sw.toString(),file,CharsetUtil.UTF_8);
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+ System.out.println("成功创建文件:" + file.getPath());
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+ IoUtil.close(sw);
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+ } catch (Exception e) {
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+ e.printStackTrace();
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+ throw new RuntimeException("渲染模板失败,表名:" + tableEntity.getTableName());
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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 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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+ private String tableToMid(String tableName, String tablePrefix) {
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+ if (StringUtils.isNotBlank(tablePrefix)) {
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+ tableName = tableName.replaceFirst(tablePrefix, "");
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+ }
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+ return tableName.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 String tableToJava(String tableName, String tablePrefix) {
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+ if (StringUtils.isNotBlank(tablePrefix)) {
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+ tableName = tableName.replaceFirst(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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+ private 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 RuntimeException("获取配置文件失败,");
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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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+ private String getFileName(String template, String className, String midName, String moduleName) {
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+ String packagePath = CommonConstants.BACK_END_PROJECT + File.separator;
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+
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+ if (template.contains(ENTITY_JAVA_VM)) {
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+ return packagePath + "model" + 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 + "dao" + 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(SERVICE_IMPL_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 CommonConstants.BACK_END_PROJECT + File.separator + "xml" + 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 CommonConstants.SQL_PROJECT + File.separator + 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 CommonConstants.FRONT_END_PROJECT + File.separator + "vue" + File.separator + StringUtils.uncapitalize(midName) + File.separator + "index.vue";
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+ }
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+
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+ if (template.contains(ADD_OR_UPDATE_VUE_VM)) {
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+ return CommonConstants.FRONT_END_PROJECT + File.separator + "vue" + File.separator + StringUtils.uncapitalize(midName) + File.separator + "add-or-update.vue";
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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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