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Jeecg-Boot 低代码开发平台
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===============
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当前最新版本： 3.2.0（发布日期：20220425）
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## 后端技术架构
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- 基础框架：Spring Boot 2.6.6
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- 持久层框架：Mybatis-plus 3.5.1
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- 安全框架：Apache Shiro 1.8.0，Jwt 3.11.0
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- 数据库连接池：阿里巴巴Druid 1.1.22
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- 缓存框架：redis
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- 日志打印：logback
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- 其他：fastjson，poi，Swagger-ui，quartz, lombok（简化代码）等。
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## 开发环境
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- 语言：Java 8
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- IDE(JAVA)： Eclipse安装lombok插件 或者 IDEA
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- 依赖管理：Maven
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- 数据库：MySQL5.7+ & Oracle 11g & SqlServer & postgresql & 国产等更多数据库
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- 缓存：Redis
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## 技术文档
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- 在线演示 ： [http://boot.jeecg.com](http://boot.jeecg.com)
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- 在线文档： [http://doc.jeecg.com](http://doc.jeecg.com)
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- 常见问题： [http://jeecg.com/doc/qa](http://jeecg.com/doc/qa)
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- QQ交流群 ： ⑤860162132、④774126647(满)、③816531124(满)、②769925425(满)、①284271917(满)
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## 专项文档
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#### 一、查询过滤器用法
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```
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QueryWrapper<?> queryWrapper = QueryGenerator.initQueryWrapper(?, req.getParameterMap());
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```
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代码示例：
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```
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@GetMapping(value = "/list")
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public Result<IPage<JeecgDemo>> list(JeecgDemo jeecgDemo, @RequestParam(name = "pageNo", defaultValue = "1") Integer pageNo,
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@RequestParam(name = "pageSize", defaultValue = "10") Integer pageSize,
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HttpServletRequest req) {
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Result<IPage<JeecgDemo>> result = new Result<IPage<JeecgDemo>>();
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//调用QueryGenerator的initQueryWrapper
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QueryWrapper<JeecgDemo> queryWrapper = QueryGenerator.initQueryWrapper(jeecgDemo, req.getParameterMap());
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Page<JeecgDemo> page = new Page<JeecgDemo>(pageNo, pageSize);
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IPage<JeecgDemo> pageList = jeecgDemoService.page(page, queryWrapper);
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result.setSuccess(true);
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result.setResult(pageList);
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return result;
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}
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```
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- 查询规则 (本规则不适用于高级查询,高级查询有自己对应的查询类型可以选择 )
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| 查询模式 | 用法 | 说明 |
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|---------- |-------------------------------------------------------|------------------|
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| 模糊查询 | 支持左右模糊和全模糊 需要在查询输入框内前或后带\*或是前后全部带\* | |
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| 取非查询 | 在查询输入框前面输入! 则查询该字段不等于输入值的数据(数值类型不支持此种查询,可以将数值字段定义为字符串类型的) | |
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| \> \>= < <= | 同取非查询 在输入框前面输入对应特殊字符即表示走对应规则查询 | |
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| in查询 | 若传入的数据带,(逗号) 则表示该查询为in查询 | |
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| 多选字段模糊查询 | 上述4 有一个特例，若某一查询字段前后都带逗号 则会将其视为走这种查询方式 ,该查询方式是将查询条件以逗号分割再遍历数组 将每个元素作like查询 用or拼接,例如 现在name传入值 ,a,b,c, 那么结果sql就是 name like '%a%' or name like '%b%' or name like '%c%' | |
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#### 二、AutoPoi(EXCEL工具类-EasyPOI衍变升级重构版本）
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[在线文档](https://github.com/zhangdaiscott/autopoi)
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#### 三、代码生成器
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> 功能说明： 一键生成的代码（包括：controller、service、dao、mapper、entity、vue）
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- 模板位置： src/main/resources/jeecg/code-template
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- 技术文档： http://doc.jeecg.com/2043916
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#### 四、编码排重使用示例
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重复校验效果：
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1.引入排重接口,代码如下:
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```
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import { duplicateCheck } from '@/api/api'
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```
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2.找到编码必填校验规则的前端代码,代码如下:
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```
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<a-input placeholder="请输入编码" v-decorator="['code', validatorRules.code ]"/>
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code: {
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rules: [
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{ required: true, message: '请输入编码!' },
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{validator: this.validateCode}
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]
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},
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```
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3.找到rules里validator对应的方法在哪里,然后使用第一步中引入的排重校验接口.
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以用户online表单编码为示例,其中四个必传的参数有:
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```
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{tableName:表名,fieldName:字段名,fieldVal:字段值,dataId:表的主键},
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```
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具体使用代码如下:
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```
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validateCode(rule, value, callback){
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let pattern = /^[a-z|A-Z][a-z|A-Z|\d|_|-]{0,}$/;
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if(!pattern.test(value)){
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callback('编码必须以字母开头，可包含数字、下划线、横杠');
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} else {
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var params = {
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tableName: "onl_cgreport_head",
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fieldName: "code",
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fieldVal: value,
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dataId: this.model.id
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};
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duplicateCheck(params).then((res)=>{
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if(res.success){
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callback();
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}else{
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callback(res.message);
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}
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})
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}
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},
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```
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## docker镜像用法
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文档： http://doc.jeecg.com/2043889
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```
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注意： 如果本地安装了mysql和redis,启动容器前先停掉本地服务，不然会端口冲突。
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net stop redis
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net stop mysql
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# 1.配置host
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# jeecgboot
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127.0.0.1 jeecg-boot-redis
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127.0.0.1 jeecg-boot-mysql
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127.0.0.1 jeecg-boot-system
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# 2.修改项目配置文件 application.yml
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active: dev
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# 3.修改application-dev.yml文件的数据库和redis链接
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修改数据库连接和redis连接，将连接改成host方式
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# 4.先进JAVA项目jeecg-boot根路径 maven打包
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mvn clean package
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# 5.构建镜像__容器组（当你改变本地代码，也可重新构建镜像）
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docker-compose build
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# 6.启动镜像__容器组（也可取代运行中的镜像）
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docker-compose up -d
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# 7.访问后台项目（注意要开启swagger）
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http://localhost:8080/jeecg-boot/doc.html
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```
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