前后端 | 低代码平台之 Erupt

本文主要是介绍前后端 | 低代码平台之 Erupt，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

前文提要

最近大家是不是都有那种危机感，项目变多了，工时压紧了，老板说，我不管你加不加班，我只看结果，项目经理说，我不管你用什么技术栈，我只要没BUG，测试说，交互不管好不好，我们只要搞光速推塔。你心说？那我走？

大家也发现了，以前要很多行代码才能实现的功能，现在变得格外简单，原因很多大佬开源了很多项目，很多大厂平台供我们选择，从此，无止尽的C+V操作变成了拼技术选型，拼方向，别人一行代码搞定的事情，一个类生成CRUD，你要不停的拷拷拷，BUG多数全凭心情，那为什么不选择一款开箱既用的产品呢？

功能概述

使用 Apache License 2.0 协议，源代码完全开源，无商业限制

代码生成器	VS	Erupt
前端 + 后端 7 ~ 10 个文件	文件数量	仅需一个类文件
重新生成代码或修改已生成代码	修改字段	添加字段注解
需要手动执行建表 SQL	建表语句	自动建表
需要整个工程，模块众多不好管理	初次部署	仅需引入 Jar 依赖即可，基础数据自动生成
需要熟悉代码生成器所提供的前端 API，有一定学习成本	前端代码	零前端代码
传统分层调用的方式开发	开发方式	全注解式开发
仅支持基本的数据组件复杂的组件需自定义	组件支持	支持23类表单组件，且支持一对多，多对多等复杂关系组件
一般只支持 MySQL	数据库	支持 MySQL、Oracle、PostgreSQL、H2 等所有主流数据库
需要生成大量代码复制到项目中，功能越多维护成本越高	开发时间	仅需一个后端工程师，短时间就可以完成高质量后台管理系统
Java 代码	逻辑扩展	按需 @DataProxy 实现
表数量越多启动越慢	启动速度	百张表映射毫秒级初始化

import: 支持多数据源：

并且：项目内置了很多功能无需开发，开箱即用

简单实力

简单CRUD

@Erupt(name = "简单的例子",power = @Power(importable = true, export = true)
)
@Table(name = "t_simple")   //数据库表名
@Entity
public class Simple extends BaseModel {@EruptField(views = @View(title = "文本"),edit = @Edit(title = "文本", notNull = true, search = @Search))private String input;@EruptField(views = @View(title = "数值", sortable = true),edit = @Edit(title = "数值", search = @Search))private Float number;@EruptField(views = @View(title = "布尔"),edit = @Edit(title = "布尔", search = @Search))private Boolean bool;@EruptField(views = @View(title = "时间"),edit = @Edit(title = "时间", search = @Search(vague = true)))private Date date;@EruptField(views = @View(title = "滑动条"),edit = @Edit(title = "滑动条", type = EditType.SLIDER, search = @Search,sliderType = @SliderType(max = 90, markPoints = {0, 30, 60, 90}, dots = true)))private Integer slide;@EruptField(views = @View(title = "下拉选择"),edit = @Edit(search = @Search,title = "下拉选择", type = EditType.CHOICE,choiceType = @ChoiceType(fetchHandler = SqlChoiceFetchHandler.class,fetchHandlerParams = "select id,name from e_upms_menu")))private Long choice;}

像这种带有CRUD功能的表单，只需要这样几行代码，一个文件就可以了

那你选择写Controller、Service、Dao、View + HTML语法，还是写这几行代码呢？

简单上传附件

@Column(length = 120)@EruptField(views = @View(title = "附件",type = ViewType.ATTACHMENT),edit = @Edit(title = "附件", type = EditType.ATTACHMENT,attachmentType = @AttachmentType(fileTypes = {"PDF","PNG","JPEG","ZIP"}, maxLimit = 1)))private String fileUrl;

这是给你封装好的上传附件组件，无需其他代码，非常好用

一对多级联

@ManyToMany@JoinTable(name = "COMMON_ZY_SZHJXZY",joinColumns = {@JoinColumn(name = "zbid",referencedColumnName = "id")},inverseJoinColumns = {@JoinColumn(name = "ywid",referencedColumnName = "id")})@EruptField(edit = @Edit(title = "仿真实习实训软件面向专业",type = EditType.TAB_TABLE_REFER,notNull = true,search = @Search(vague = true)),sort = 45)private Set<ZyjsZyszView> zyjsZyszs;

高级用法

如果你的数据源不是项目链接的单标，是从接口或者其他库获得的，我们可以采用多数据源

代码实力

//注入启动类
@Beanpublic ApplicationRunner appRunner() {return new ApplicationRunner() {@Overridepublic void run(ApplicationArguments args) throws Exception {DataProcessorManager.register("BndhdDataSource", BndhdDataService.class);}};}

实体类

@Erupt(name = "SCHOOL_ACTIVITY_ZYJY",desc = "本年度活动表"
)
@EruptDataProcessor("BndhdDataSource")
@Entity
@Getter
@Setter
@DynamicInsert
@DynamicUpdate
@Power(delete = false)
public class Bndhd{private static final long serialVersionUID = 1L;@Id@GeneratedValue(generator = "sys_uuid")@GenericGenerator(name = "sys_uuid", strategy = "uuid")@Column(name = "id", length = 64)@EruptFieldprivate String id;@Column(length = 400)@EruptField(views = @View(title = "学校名称",desc = "学校名称",width = "120"),edit = @Edit(title = "学校名称",desc = "学校名称",search = @Search(vague = true)))private String XXMC;@Column(length = 400)@EruptField(views = @View(title = "活动名称",desc = "活动名称",width = "120"))private String HDMC;@Column(length = 400)@EruptField(views = @View(title = "活动类型",desc = "活动类型",width = "120"),edit = @Edit(title = "活动类型",desc = "活动类型",search = @Search))private String HDLX;@Column(length = 400)@EruptField(views = @View(title = "活动开始时间",desc = "活动开始时间",width = "120"))private String HDKSRQ;@Column(length = 400)@EruptField(views = @View(title = "活动结束时间",desc = "活动结束时间",width = "120"))private String HDJSRQ;@Column(length = 400)@EruptField(views = @View(title = "目前状态",desc = "目前状态",width = "120"))private String MQZT;
}

重写数据源方法

@Service
public class BndhdDataService implements IEruptDataService {@Autowiredprivate JdbcTemplateService jdbcTemplateService;@Overridepublic PowerObject power(){PowerObject powerObject = new PowerObject();powerObject.setDelete(false);powerObject.setAdd(false);powerObject.setEdit(false);powerObject.setViewDetails(false);return powerObject;}@Overridepublic Object findDataById(EruptModel eruptModel, Object id) {return null;}@Overridepublic Page queryList(EruptModel eruptModel, Page page, EruptQuery eruptQuery) {Page pageResult = new Page();pageResult.setPageSize(page.getPageSize());String queryParam = "";// 职业教育活动周String zyhdzSql = "SELECT XXDM XXDM,HDMC,'职业教育活动周' HDLX,HDKSRQ HDKSRQ,HDJSRQ HDJSRQ FROM SCHOOL_ACTIVITY_ZYJY WHERE IS_DELETE = '0' ";// 文明风采String wmfcSql = "SELECT XXDM XXDM,HDMC,'文明风采' HDLX,HDKSRQ HDKSRQ,HDJSRQ HDJSRQ FROM SCHOOL_ACTIVITY_WMFC WHERE IS_DELETE = '0' ";// 其他String qtSql = "SELECT XXDM XXDM,HDMC,'其他' HDLX,HDKSRQ HDKSRQ,HDJSRQ HDJSRQ FROM SCHOOL_ACTIVITY_QT WHERE IS_DELETE = '0' ";// 大国工匠String dggjSql = "SELECT XXDM XXDM,HDMC,'大国工匠' HDLX,HDKSRQ HDKSRQ,HDJSRQ HDJSRQ FROM SCHOOL_ACTIVITY_DGGJ WHERE IS_DELETE = '0'";String queryMainSql = "";List<Condition> conditions = eruptQuery.getConditions();Map<String, String> keyToQueryMainSql = new HashMap<>();keyToQueryMainSql.put("职业教育活动周", zyhdzSql);keyToQueryMainSql.put("文明风采", wmfcSql);keyToQueryMainSql.put("其他", qtSql);keyToQueryMainSql.put("大国工匠", dggjSql);Boolean isDggj = true;for (Condition condition : conditions) {String key = condition.getKey();if (ObjUtil.isNotEmpty(condition.getValue())) {String value = condition.getValue().toString();if (key.equals("XXMC")) {queryParam = " AND T.XXMC = '" + value + "'";} else if (key.equals("HDLX") && keyToQueryMainSql.containsKey(value)) {queryMainSql = keyToQueryMainSql.get(value);isDggj = false;} else if(key.equals("HDLX") && !keyToQueryMainSql.containsKey(value)){queryParam = " AND T.XXMC = '」@「'";}}}if (isDggj) {StringBuilder sb = new StringBuilder();keyToQueryMainSql.forEach((k, v) -> {sb.append(v).append(" UNION ALL ");});queryMainSql = sb.substring(0, sb.length() - " UNION ALL ".length());}String dySql = "SELECT T.XXDM,T.XXMC,T.XXXZQHM AS REGIONID,REGION.NAME REGIONNAME,T.HDLX,T.HDMC,T.HDKSRQ,T.HDJSRQ, " +"case when to_date(T.HDJSRQ,'') > sysdate then '未结束' else '结束' end as mqzt " +"FROM ( " +"SELECT T.XXDM,T.HDMC,T.HDLX,T.HDKSRQ,T.HDJSRQ,SCHOOL_INFO.XXXZQHM,SCHOOL_INFO.XXMC " +"FROM " +"( " + queryMainSql + ") T " +"INNER JOIN SCHOOL_INFO ON ( T.XXDM = SCHOOL_INFO.XXDM) ) T " +"INNER JOIN REGION ON T.XXXZQHM = REGION.ID " + queryParam;String countSql = "SELECT COUNT(*) FROM (" + dySql + ") T";Integer count = jdbcTemplateService.getValue(countSql);long longValue = count.longValue();pageResult.setTotal(longValue);List<Map<String, Object>> bndhdList = new ArrayList<>();bndhdList = jdbcTemplateService.getListMap(dySql);pageResult.setList(bndhdList);return pageResult;}@Overridepublic Collection<Map<String, Object>> queryColumn(EruptModel eruptModel, List<Column> columns, EruptQuery eruptQuery) {return null;}@Overridepublic void addData(EruptModel eruptModel, Object object) {}@Overridepublic void editData(EruptModel eruptModel, Object object) {}@Overridepublic void deleteData(EruptModel eruptModel, Object object) {}
}

怎么样？喜欢玩攻速流的程序员们心动了吗？现在Enjoy your time！

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