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package io.hmit.utils;
import io.hmit.entity.ColumnEntity;
import io.hmit.entity.TableEntity;
import org.apache.commons.configuration.Configuration;
import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.configuration.PropertiesConfiguration;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang.WordUtils;
import org.apache.velocity.Template;
import org.apache.velocity.VelocityContext;
import org.apache.velocity.app.Velocity;
import java.io.File;
import java.io.IOException;
import java.io.StringWriter;
import java.util.*;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
/**
* 代码生成器 工具类
*
* @author zsh 408538940@qq.com
*/
public class GenUtils {
public static List<String> getTemplates() {
List<String> templates = new ArrayList<String>();
templates.add("template/DTO.java.vm");
templates.add("template/Entity.java.vm");
templates.add("template/Dao.java.vm");
templates.add("template/Dao.xml.vm");
templates.add("template/Service.java.vm");
templates.add("template/ServiceImpl.java.vm");
templates.add("template/Controller.java.vm");
templates.add("template/Excel.java.vm");
templates.add("template/index.vue.vm");
templates.add("template/add-or-update.vue.vm");
templates.add("template/mysql.vm");
templates.add("template/sqlserver.vm");
templates.add("template/oracle.vm");
templates.add("template/postgresql.vm");
return templates;
}
/**
* 生成代码
*/
public static void generatorCode(Map<String, String> table,
List<Map<String, String>> columns, ZipOutputStream zip) {
//配置信息
Configuration config = getConfig();
boolean hasBigDecimal = false;
//表信息
TableEntity tableEntity = new TableEntity();
tableEntity.setTableName(table.get("tableName"));
tableEntity.setComments(table.get("tableComment"));
//表名转换成Java类名
String className = tableToJava(tableEntity.getTableName(), config.getString("tablePrefix"));
tableEntity.setClassName(className);
tableEntity.setClassname(StringUtils.uncapitalize(className));
//列信息
List<ColumnEntity> columsList = new ArrayList<>();
for (Map<String, String> column : columns) {
ColumnEntity columnEntity = new ColumnEntity();
columnEntity.setColumnName(column.get("columnName"));
columnEntity.setDataType(column.get("dataType"));
columnEntity.setComments(column.get("columnComment"));
columnEntity.setExtra(column.get("extra"));
//列名转换成Java属性名
String attrName = columnToJava(columnEntity.getColumnName());
columnEntity.setAttrName(attrName);
columnEntity.setAttrname(StringUtils.uncapitalize(attrName));
//列的数据类型，转换成Java类型
String attrType = config.getString(columnEntity.getDataType(), "unknowType");
columnEntity.setAttrType(attrType);
if (!hasBigDecimal && attrType.equals("BigDecimal")) {
hasBigDecimal = true;
}
//是否主键
if ("PRI".equalsIgnoreCase(column.get("columnKey")) && tableEntity.getPk() == null) {
tableEntity.setPk(columnEntity);
}
columsList.add(columnEntity);
}
tableEntity.setColumns(columsList);
//没主键，则第一个字段为主键
if (tableEntity.getPk() == null) {
tableEntity.setPk(tableEntity.getColumns().get(0));
}
//设置velocity资源加载器
Properties prop = new Properties();
prop.put("file.resource.loader.class", "org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader");
Velocity.init(prop);
//封装模板数据
Map<String, Object> map = new HashMap<>();
map.put("tableName", tableEntity.getTableName());
map.put("comments", tableEntity.getComments());
map.put("pk", tableEntity.getPk());
map.put("className", tableEntity.getClassName());
map.put("classname", tableEntity.getClassname());
map.put("pathName", tableEntity.getClassname().toLowerCase());
map.put("columns", tableEntity.getColumns());
map.put("hasBigDecimal", hasBigDecimal);
map.put("version", config.getString("version"));
map.put("package", config.getString("package"));
map.put("moduleName", config.getString("moduleName"));
map.put("author", config.getString("author"));
map.put("email", config.getString("email"));
map.put("datetime", DateUtils.format(new Date(), DateUtils.DATE_TIME_PATTERN));
map.put("date", DateUtils.format(new Date(), DateUtils.DATE_PATTERN));
for (int i = 0; i <= 10; i++) {
map.put("id" + i, IdWorker.getId());
}
VelocityContext context = new VelocityContext(map);
//获取模板列表
List<String> templates = getTemplates();
for (String template : templates) {
//渲染模板
StringWriter sw = new StringWriter();
Template tpl = Velocity.getTemplate(template, "UTF-8");
tpl.merge(context, sw);
try {
//添加到zip
zip.putNextEntry(new ZipEntry(getFileName(template, tableEntity.getClassName(), config.getString("package"), config.getString("moduleName"))));
IOUtils.write(sw.toString(), zip, "UTF-8");
IOUtils.closeQuietly(sw);
zip.closeEntry();
} catch (IOException e) {
throw new HmitException("渲染模板失败，表名：" + tableEntity.getTableName(), e);
}
}
}
/**
* 列名转换成Java属性名
*/
public static String columnToJava(String columnName) {
return WordUtils.capitalizeFully(columnName, new char[]{'_'}).replace("_", "");
}
/**
* 表名转换成Java类名
*/
public static String tableToJava(String tableName, String tablePrefix) {
if (StringUtils.isNotBlank(tablePrefix)) {
tableName = tableName.replaceFirst(tablePrefix, "");
}
return columnToJava(tableName);
}
/**
* 获取配置信息
*/
public static Configuration getConfig() {
try {
return new PropertiesConfiguration("generator.properties");
} catch (ConfigurationException e) {
throw new HmitException("获取配置文件失败，", e);
}
}
/**
* 获取文件名
*/
public static String getFileName(String template, String className, String packageName, String moduleName) {
String packagePath = "main" + File.separator + "java" + File.separator;
if (StringUtils.isNotBlank(packageName)) {
packagePath += packageName.replace(".", File.separator) + File.separator + "modules" + File.separator + moduleName + File.separator;
}
if (template.contains("Entity.java.vm")) {
return packagePath + "entity" + File.separator + className + "Entity.java";
}
if (template.contains("Excel.java.vm")) {
return packagePath + "excel" + File.separator + className + "Excel.java";
}
if (template.contains("Dao.java.vm")) {
return packagePath + "dao" + File.separator + className + "Dao.java";
}
if (template.contains("Service.java.vm")) {
return packagePath + "service" + File.separator + className + "Service.java";
}
if (template.contains("ServiceImpl.java.vm")) {
return packagePath + "service" + File.separator + "impl" + File.separator + className + "ServiceImpl.java";
}
if (template.contains("Controller.java.vm")) {
return packagePath + "controller" + File.separator + className + "Controller.java";
}
if (template.contains("Dao.xml.vm")) {
return "main" + File.separator + "resources" + File.separator + "mapper" + File.separator + moduleName + File.separator + className + "Dao.xml";
}
if (template.contains("DTO.java.vm")) {
return packagePath + "dto" + File.separator + className + "DTO.java";
}
if (template.contains("index.vue.vm")) {
return "vue" + File.separator + "views" + File.separator + "modules" +
File.separator + moduleName + File.separator + className.toLowerCase() + ".vue";
}
if (template.contains("add-or-update.vue.vm")) {
return "vue" + File.separator + "views" + File.separator + "modules" +
File.separator + moduleName + File.separator + className.toLowerCase() + "-add-or-update.vue";
}
if (template.contains("mysql.vm")) {
return className.toLowerCase() + ".mysql.sql";
}
if (template.contains("oracle.vm")) {
return className.toLowerCase() + ".oracle.sql";
}
if (template.contains("sqlserver.vm")) {
return className.toLowerCase() + ".sqlserver.sql";
}
if (template.contains("postgresql.vm")) {
return className.toLowerCase() + ".postgresql.sql";
}
return null;
}
}