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+package com.kmall.gen.utils;
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+
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+import com.kmall.common.utils.Constant;
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+import com.kmall.common.utils.DateUtils;
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+import com.kmall.common.utils.RRException;
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+import com.kmall.gen.entity.ColumnEntity;
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+import com.kmall.gen.entity.TableEntity;
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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.io.IOUtils;
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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 Scott
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+ * @email
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+ * @date 2017年1月3日 下午6:35:28
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+ */
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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<String>();
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+ templates.add("template/Entity.java.vm");
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+ templates.add("template/Dao.java.vm");
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+ templates.add("template/Dao.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/list.html.vm");
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+ templates.add("template/list.js.vm");
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+ templates.add("template/menu.sql.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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+
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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.setClassName(className);
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+ tableEntity.setClassname(StringUtils.uncapitalize(className));
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+
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+ //列信息
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+ List<ColumnEntity> columsList = 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.setAttrName(attrName);
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+ columnEntity.setAttrname(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(), "String");
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+ columnEntity.setAttrType(attrType);
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+
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+ //是否主键
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+ if ("ORACLE".equals(Constant.USE_DATA)) {
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+ if ((column.get("columnName").equalsIgnoreCase(column.get("columnKey")) && tableEntity.getPk() == null)) {
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+ tableEntity.setPk(columnEntity);
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+ }
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+ } else {
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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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+
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+ columsList.add(columnEntity);
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+ }
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+ tableEntity.setColumns(columsList);
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+
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+ //若没主键
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+ if (tableEntity.getPk() == null) {
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+ //设置columnName为id的为主键
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+ boolean flag = true;
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+ for (ColumnEntity columnEntity : tableEntity.getColumns()) {
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+ if ("id".equals(columnEntity.getAttrname())) {
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+ tableEntity.setPk(columnEntity);
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+ flag = false;
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+ break;
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+ }
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+ }
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+ //若无id字段则第一个字段为主键
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+ if (flag) {
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+ tableEntity.setPk(tableEntity.getColumns().get(0));
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+ }
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+ }
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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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+
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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.getClassName());
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+ map.put("classname", tableEntity.getClassname());
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+ map.put("pathName", tableEntity.getClassname().toLowerCase());
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+ map.put("columns", tableEntity.getColumns());
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+ map.put("package", config.getString("package"));
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+ map.put("author", config.getString("author"));
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+ map.put("email", config.getString("email"));
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+ map.put("datetime", DateUtils.format(new Date(), DateUtils.DATE_TIME_PATTERN));
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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, "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(getFileName(template, tableEntity.getClassName(), config.getString("package"))));
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+ IOUtils.write(sw.toString(), zip, "UTF-8");
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+ IOUtils.closeQuietly(sw);
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+ zip.closeEntry();
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+ } catch (IOException e) {
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+ throw new RRException("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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+ public 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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+ public 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 RRException("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) {
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+ String packagePath = "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;
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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 + "Entity.java";
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+ }
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+
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+ if (template.contains("Dao.java.vm")) {
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+ return packagePath + "dao" + File.separator + className + "Dao.java";
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+ }
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+
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+ if (template.contains("Dao.xml.vm")) {
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+ return packagePath + "dao" + File.separator + className + "Dao.xml";
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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("list.html.vm")) {
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+ return "main" + File.separator + "webapp" + File.separator + "WEB-INF" + File.separator + "page"
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+ + File.separator + "shop" + File.separator + className.toLowerCase() + ".html";
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+ }
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+
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+ if (template.contains("list.js.vm")) {
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+ return "main" + File.separator + "webapp" + File.separator + "js" + File.separator + "shop" + File.separator + className.toLowerCase() + ".js";
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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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+ return null;
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+ }
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+}
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