package cn.cetc54.platform.generator;
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import cn.cetc54.platform.core.common.exception.PlatformException;
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import cn.cetc54.platform.generator.bean.Entity;
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import cn.cetc54.platform.generator.bean.Item;
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import cn.hutool.core.util.StrUtil;
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import io.swagger.annotations.ApiModelProperty;
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import lombok.extern.slf4j.Slf4j;
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import org.beetl.core.Configuration;
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import org.beetl.core.GroupTemplate;
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import org.beetl.core.Template;
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import org.beetl.core.resource.FileResourceLoader;
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import javax.persistence.Transient;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.net.URL;
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import java.net.URLClassLoader;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* 代码生成器
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* @author
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*/
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@Slf4j
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public class PlatformGenerator {
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/**
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* 实体类名
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* 建议仅需修改
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*/
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private static final String className = "Student";
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/**
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* 类说明描述
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* 建议仅需修改
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*/
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private static final String description = "测试";
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/**
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* 作者名
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* 建议仅需修改
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*/
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private static final String author = "";
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/**
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* 是否生成树形结构相关接口
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* 建议仅需修改
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*/
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private static final Boolean isTree = false;
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/**
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* 数据库表名前缀
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* 下方请根据需要修改
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*/
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private static final String tablePre = "t_";
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/**
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* 主键类型
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*/
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private static final String primaryKeyType = "String";
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/**
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* 生成模块路径
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* (文件自动生成至该模块下)
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*/
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private static final String module = "/platform-modules/platform-your";
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/**
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* 实体类对应包
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* (文件自动生成至该包下)
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*/
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private static final String entityPackage = "cn.cetc54.platform.your.entity";
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/**
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* dao对应包
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* (文件自动生成至该包下)
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*/
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private static final String daoPackage = "cn.cetc54.platform.your.dao";
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/**
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* service对应包
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* (文件自动生成至该包下)
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*/
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private static final String servicePackage = "cn.cetc54.platform.your.service";
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/**
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* serviceImpl对应包
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* (文件自动生成至该包下)
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*/
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private static final String serviceImplPackage = "cn.cetc54.platform.your.serviceimpl";
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/**
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* controller对应包
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* (文件自动生成至该包下)
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*/
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private static final String controllerPackage = "cn.cetc54.platform.your.controller";
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/**
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* 运行该主函数即可生成代码
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* @param args
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* @throws IOException
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*/
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public static void main(String[] args) throws IOException {
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// 模板路径
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String root = System.getProperty("user.dir")+"/platform-modules/platform-generator/src/main/java/cn/cetc54/platform/generator/template";
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FileResourceLoader resourceLoader = new FileResourceLoader(root,"utf-8");
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Configuration cfg = Configuration.defaultConfiguration();
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GroupTemplate gt = new GroupTemplate(resourceLoader, cfg);
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// 生成代码
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generateCode(gt);
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// 读取你的实体类中的字段，补充生成条件构造分页查询代码【需自行复制控制台打印输出的代码自行覆盖】
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generatePlus(gt);
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// 根据类名删除生成的代码
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//deleteCode(className);
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}
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/**
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* 生成代码
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* @param gt
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* @throws IOException
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*/
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private static void generateCode(GroupTemplate gt) throws IOException{
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Template entityTemplate = gt.getTemplate("entity.btl");
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Template daoTemplate = gt.getTemplate("dao.btl");
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Template serviceTemplate = gt.getTemplate("service.btl");
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Template serviceImplTemplate = gt.getTemplate("serviceImpl.btl");
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Template controllerTemplate = gt.getTemplate("controller.btl");
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if(isTree){
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controllerTemplate = gt.getTemplate("treeController.btl");
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}
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Entity entity = new Entity();
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entity.setEntityPackage(entityPackage);
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entity.setDaoPackage(daoPackage);
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entity.setServicePackage(servicePackage);
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entity.setServiceImplPackage(serviceImplPackage);
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entity.setControllerPackage(controllerPackage);
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entity.setAuthor(author);
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entity.setClassName(name(className, true));
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entity.setTableName(tablePre+camel2Underline(className));
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entity.setClassNameLowerCase(name(className, false));
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entity.setDescription(description);
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entity.setPrimaryKeyType(primaryKeyType);
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entity.setIsTree(isTree);
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OutputStream out = null;
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//生成实体类代码
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entityTemplate.binding("entity",entity);
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String entityResult = entityTemplate.render();
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System.out.println(entityResult);
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//创建文件
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String entityFileUrl = System.getProperty("user.dir")+ module +"/src/main/java/"+ dotToLine(entityPackage) + "/" + className + ".java";
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File entityFile = new File(entityFileUrl);
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File entityDir = entityFile.getParentFile();
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if (!entityDir.exists()) {
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entityDir.mkdirs();
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}
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if(!entityFile.exists()){
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//实体类若存在则不重新生成
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entityFile.createNewFile();
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out = new FileOutputStream(entityFile);
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entityTemplate.renderTo(out);
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}
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//生成dao代码
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daoTemplate.binding("entity",entity);
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String daoResult = daoTemplate.render();
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System.out.println(daoResult);
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//创建文件
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String daoFileUrl = System.getProperty("user.dir")+ module +"/src/main/java/"+ dotToLine(daoPackage) + "/" +className + "Dao.java";
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File daoFile = new File(daoFileUrl);
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File daoDir = daoFile.getParentFile();
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if (!daoDir.exists()) {
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daoDir.mkdirs();
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}
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daoFile.createNewFile();
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out = new FileOutputStream(daoFile);
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daoTemplate.renderTo(out);
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//生成service代码
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serviceTemplate.binding("entity",entity);
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String serviceResult = serviceTemplate.render();
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System.out.println(serviceResult);
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//创建文件
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String serviceFileUrl = System.getProperty("user.dir")+ module +"/src/main/java/"+ dotToLine(servicePackage) + "/" + className + "Service.java";
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File serviceFile = new File(serviceFileUrl);
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File serviceDir = serviceFile.getParentFile();
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if (!serviceDir.exists()) {
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serviceDir.mkdirs();
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}
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serviceFile.createNewFile();
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out = new FileOutputStream(serviceFile);
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serviceTemplate.renderTo(out);
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//生成serviceImpl代码
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serviceImplTemplate.binding("entity",entity);
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String serviceImplResult = serviceImplTemplate.render();
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System.out.println(serviceImplResult);
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//创建文件
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String serviceImplFileUrl = System.getProperty("user.dir")+ module +"/src/main/java/"+ dotToLine(serviceImplPackage) + "/" + className + "ServiceImpl.java";
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File serviceImplFile = new File(serviceImplFileUrl);
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File serviceImplDir = serviceImplFile.getParentFile();
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if (!serviceImplDir.exists()) {
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serviceImplDir.mkdirs();
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}
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serviceImplFile.createNewFile();
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out = new FileOutputStream(serviceImplFile);
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serviceImplTemplate.renderTo(out);
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//生成controller代码
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controllerTemplate.binding("entity",entity);
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String controllerResult = controllerTemplate.render();
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System.out.println(controllerResult);
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//创建文件
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String controllerFileUrl = System.getProperty("user.dir")+ module +"/src/main/java/"+ dotToLine(controllerPackage) + "/" + className + "Controller.java";
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File controllerFile = new File(controllerFileUrl);
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File controllerDir = controllerFile.getParentFile();
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if (!controllerDir.exists()) {
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controllerDir.mkdirs();
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}
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controllerFile.createNewFile();
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out = new FileOutputStream(controllerFile);
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controllerTemplate.renderTo(out);
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out.close();
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System.out.println("\n\n生成代码成功！\n\n\n");
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}
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/**
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* 删除指定类代码
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* @param className
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* @throws IOException
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*/
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private static void deleteCode(String className) throws IOException{
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String entityFileUrl = System.getProperty("user.dir")+ module +"/src/main/java/"+ dotToLine(entityPackage) + "/" +className+".java";
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File entityFile = new File(entityFileUrl);
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if(entityFile.exists()){
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entityFile.delete();
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}
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String daoFileUrl = System.getProperty("user.dir")+ module +"/src/main/java/"+ dotToLine(daoPackage) + "/" +className+"Dao.java";
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File daoFile = new File(daoFileUrl);
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if(daoFile.exists()){
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daoFile.delete();
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}
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String serviceFileUrl = System.getProperty("user.dir")+ module +"/src/main/java/"+ dotToLine(servicePackage) + "/" +className+"Service.java";
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File serviceFile = new File(serviceFileUrl);
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if(serviceFile.exists()){
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serviceFile.delete();
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}
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String serviceImplFileUrl = System.getProperty("user.dir")+ module +"/src/main/java/"+ dotToLine(serviceImplPackage) + "/" +className+"ServiceImpl.java";
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File serviceImplFile = new File(serviceImplFileUrl);
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if(serviceImplFile.exists()){
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serviceImplFile.delete();
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}
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String controllerFileUrl = System.getProperty("user.dir")+ module +"/src/main/java/"+ dotToLine(controllerPackage) + "/" +className+"Controller.java";
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File controllerFile = new File(controllerFileUrl);
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if(controllerFile.exists()){
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controllerFile.delete();
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}
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System.out.println("删除代码完毕！");
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}
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private static void generatePlus(GroupTemplate gt){
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try {
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generateJPAPlus(gt);
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}catch (java.lang.Exception e){
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System.out.println("请确保实体类存在并且【已编译生成的模块代码】，记得完善填入字段后再生成条件构造代码哦！");
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}
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}
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private static void generateJPAPlus(GroupTemplate gt) throws java.lang.Exception {
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Template plusTemplate = gt.getTemplate("plus.btl");
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Entity entity = new Entity();
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entity.setClassName(name(className, true));
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entity.setClassNameLowerCase(name(className, false));
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List<Item> items = new ArrayList<>();
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String path = System.getProperty("user.dir")+ module + "/target/classes/";
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URL url = new URL("file", null, path);
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URLClassLoader classLoader = new URLClassLoader(new URL[]{url});
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Class c = classLoader.loadClass(entityPackage+"."+className);
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Object obj = c.getDeclaredConstructor().newInstance();
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java.lang.reflect.Field[] fields = obj.getClass().getDeclaredFields();
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for (int i = 0; i < fields.length; i++) {
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java.lang.reflect.Field field = fields[i];
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field.setAccessible(true);
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// 字段名
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String fieldName = field.getName();
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String fieldType = field.getType().getName();
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// 白名单
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if("serialVersionUID".equals(fieldName)||field.getAnnotation(Transient.class)!=null){
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continue;
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}
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// 获得字段注解
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ApiModelProperty myFieldAnnotation = field.getAnnotation(ApiModelProperty.class);
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String fieldNameCN = fieldName;
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if (myFieldAnnotation != null) {
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fieldNameCN = myFieldAnnotation.value();
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}
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fieldNameCN = (fieldNameCN == null || fieldNameCN == "") ? fieldName : fieldNameCN;
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if(fieldType.startsWith("java.lang.")){
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fieldType = StrUtil.subAfter(fieldType, "java.lang.", false);
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}else if(fieldType.equals("java.util.Date")){
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fieldType = "Date";
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}
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Item item = new Item();
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item.setType(fieldType);
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item.setUpperName(name(fieldName, true));
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item.setLowerName(name(fieldName, false));
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item.setLineName(camel2Underline(fieldName));
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item.setTitle(fieldNameCN);
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items.add(item);
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}
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// 绑定参数
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plusTemplate.binding("entity", entity);
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plusTemplate.binding("items", items);
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String result = plusTemplate.render();
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System.out.println("=================================================================================");
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System.out.println("=====生成条件构造代码Plus成功！请根据需要自行复制覆盖以下代码至实现方法ServiceImpl中======");
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System.out.println("=================================条件构造代码起始线=================================");
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System.out.println(result);
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System.out.println("=================================条件构造代码终止线=================================");
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System.out.println("【代码方法覆盖位置："+ serviceImplPackage + "." + className +"ServiceImpl.java】");
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System.out.println("【若未读取到字段请主动编译下生成的模块代码】");
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}
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/**
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* 点转斜线
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* @param str
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* @return
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*/
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public static String dotToLine(String str){
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return str.replace(".", "/");
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}
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/**
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* 驼峰法转下划线
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*/
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public static String camel2Underline(String str) {
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if (StrUtil.isBlank(str)) {
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return "";
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}
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if(str.length()==1){
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return str.toLowerCase();
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}
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StringBuffer sb = new StringBuffer();
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for(int i=1;i<str.length();i++){
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if(Character.isUpperCase(str.charAt(i))){
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sb.append("_"+Character.toLowerCase(str.charAt(i)));
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}else{
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sb.append(str.charAt(i));
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}
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}
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return (str.charAt(0)+sb.toString()).toLowerCase();
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}
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/**
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* 首字母是否大小写
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* @param name
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* @param isFirstUpper
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* @return
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*/
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public static String name(String name, boolean isFirstUpper){
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if(StrUtil.isBlank(name)){
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throw new PlatformException("name不能为空");
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}
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if(name.length()==1){
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if(isFirstUpper){
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return name.toUpperCase();
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} else {
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return name.toLowerCase();
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}
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}
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StringBuffer sb = new StringBuffer();
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if(isFirstUpper){
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sb.append(Character.toUpperCase(name.charAt(0)));
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} else {
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sb.append(Character.toLowerCase(name.charAt(0)));
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}
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sb.append(name.substring(1));
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return sb.toString();
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}
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}
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