SpringBoot+Vue实现数据添加功能

2024-04-02 19:04:59 186人浏览安东尼

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摘要

一、添加代码生成器用来自动为数据库映射类建立：mapper、service、controller 注：代码生成器的写法，参考官方文档：https://mp.baomidou.co

一、添加代码生成器

用来自动为数据库映射类建立：mapper、service、controller

注：代码生成器的写法，参考官方文档：https://mp.baomidou.com/


package com.hanmh.utils;

import com.baomidou.mybatisplus.core.toolkit.StringPool;
import com.baomidou.mybatisplus.generator.AutoGenerator;
import com.baomidou.mybatisplus.generator.InjectionConfig;
import com.baomidou.mybatisplus.generator.config.*;
import com.baomidou.mybatisplus.generator.config.po.TableInfo;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
import com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine;
import com.hanmh.pojo.BasePojo;
 
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
 
public class HanGenerator {
  public static void main(String[] args) {
    // 代码生成器
    AutoGenerator mpg = new AutoGenerator();
 
    // 全局配置
    GlobalConfig GC = new GlobalConfig();
    //这样获取到的是父项目的目录
    String projectPath = System.getProperty("user.dir");
    String pojoProject = "pojo" + "/src/main/java/com/hanmh/pojo";
    String otherProject = "admin";
 
    //gc.setOutputDir(projectPath + "/src/main/java");
    gc.setAuthor("hanmh");
    gc.setOpen(false);
    // gc.setswagger2(true); 实体属性 Swagger2 注解
    mpg.setGlobalConfig(gc);
 
    // 数据源配置
    DataSourceConfig dsc = new DataSourceConfig();
    dsc.setUrl("jdbc:Mysql://39.105.231.52:3306/db?useUnicode=true&useSSL=false&characterEncoding=utf8");
    // dsc.setSchemaName("public");
    dsc.setDriverName("com.mysql.jdbc.Driver");
    dsc.setUsername("root");
    dsc.setPassword("123456");
    mpg.setDataSource(dsc);
 
    // 包配置
    PackageConfig pc = new PackageConfig();
    pc.setParent("com.hanmh"); //设置父包
 
    //自定义生成路径
    Map<String,String> pathInfo = new HashMap<String,String>();
    pathInfo.put("entity_path", projectPath + "/" + pojoProject); //pojo位置
    pathInfo.put("controller_path", projectPath + "/" + otherProject + "/src/main/java/com/hanmh/controller");
    pathInfo.put("service_impl_path", projectPath + "/" + otherProject + "/src/main/java/com/hanmh/service/impl");
    pathInfo.put("service_path", projectPath + "/" + otherProject + "/src/main/java/com/hanmh/service");
    pathInfo.put("mapper_path", projectPath + "/" + otherProject + "/src/main/java/com/hanmh/mapper");
    pathInfo.put("xml_path", projectPath + "/" + otherProject + "/src/main/resources/com/hanmh/mapper");
    pc.setEntity("pojo"); //实体类
    pc.setPathInfo(pathInfo);
    mpg.setPackageInfo(pc);
 
    // 自定义配置
    InjectionConfig cfg = new InjectionConfig() {
      @Override
      public void initMap() {
        // to do nothing
      }
    };
 
    // 如果模板引擎是 freemarker
    String templatePath = "/templates/mapper.xml.ftl";
 
 
    // 策略配置
    StrategyConfig strategy = new StrategyConfig();
    strategy.setNaming(NamingStrategy.underline_to_camel);
    strategy.setColumnNaming(NamingStrategy.underline_to_camel);
    //生成时，继承的父类
    strategy.setSuperEntityClass(BasePojo.class);
    strategy.setEntityLombokModel(true);
    strategy.setRestControllerStyle(true);
    // 公共父类
    strategy.setSuperControllerClass("你自己的父类控制器,没有就不用设置!");
    // 写于父类中的公共字段
    strategy.setSuperEntityColumns("id");
    strategy.setInclude("ums_admin");
    strategy.setControllerMappingHyphenStyle(true);
    strategy.setTablePrefix(pc.getModuleName() + "_");
    mpg.setStrategy(strategy);
    mpg.setTemplateEngine(new FreemarkerTemplateEngine());
    mpg.execute();
  }
}

二、导入需要的jar包

前期需要导入的包有：mybatis-plus、mysql、duracloud（工具包）、pojo、spring-boot-starter-WEB


<dependency>
  <groupId>com.hanmh</groupId>
  <artifactId>pojo</artifactId>
</dependency>
<dependency>
  <groupId>org.projectlombok</groupId>
  <artifactId>lombok</artifactId>
</dependency>
<dependency>
  <groupId>com.baomidou</groupId>
  <artifactId>mybatis-plus-boot-starter</artifactId>
</dependency>
<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
  <groupId>mysql</groupId>
  <artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
  <groupId>org.duracloud</groupId>
  <artifactId>common</artifactId>
</dependency>

三、创建启动类

启动类必须创建在父包下面，注意在SpringBoot中，并不是不扫包，而是框架帮助完成了这件事，它会扫描启动类所在包下的所有类及其子包中的类


package com.hanmh;
 
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
 
@SpringBootApplication
@MapperScan("com.hanmh.mapper")
public class AdminRun {
  public static void main(String[] args) {
    SpringApplication.run(AdminRun.class);
  }
}

四、创建配置文件（application.yml）


server:
 port: 8080
spring:
 application:
  name: admin
 datasource:
  driver-class-name: com.mysql.jdbc.Driver
  url: jdbc:mysql://39.105.231.52:3306/db?useUnicode=true&useSSL=false&characterEncoding=utf8
  username: root
  passWord: 123456
  hikari:
   maximum-pool-size: 20
   minimum-idle: 10
 servlet:
  #文件传输配置
  multipart:
   max-file-size: 5MB
   max-request-size: 10MB
#运行的过程中输出sql语句（日志信息）
logging:
 level:
  com.hanmh.mapper: debug

五、返回值统一定义

1、ResultJSON


package com.hanmh.pojo;
 
import lombok.Data;
 
@Data
public class Resultjson {
  private Integer code; //200成功，500错误
  private Object obj;
  private String message;
  public ResultJson(ResultCode resultCode, Object obj) {
    this.code = resultCode.getCode();
    this.message = resultCode.getMessage();
    this.obj = obj;
  }
  public ResultJson(ResultCode resultCode, Object obj, String message) {
    this.code = resultCode.getCode();
    this.message = message;
    this.obj = obj;
  }
 
 
  public static ResultJson success(Object obj) {
    return new ResultJson(ResultCode.SUCCESS, obj);
  }
 
  public static ResultJson success(Object obj, String message) {
    return new ResultJson(ResultCode.SUCCESS, obj, message);
  }
 
  public static ResultJson error(Object obj) {
    return new ResultJson(ResultCode.ERROR, obj);
  }
  public static ResultJson error() {
    return new ResultJson(ResultCode.ERROR, null);
  }
  public static ResultJson error(String message) {
    return new ResultJson(ResultCode.ERROR, null, message);
  }
}

2、ResultCode

定义4种返回代号和返回信息，使用枚举类进行实现


package com.hanmh.pojo;
 
import lombok.Data;
import lombok.Getter;
 
@Getter
public enum ResultCode {
  SUCCESS(200, "请求成功"),
  ERROR(500, "请求失败"),
  NOAUTH(401, "用户未登录或者登录超时"), //操作时
  NOPREMISSION(403, "没有此权限");
  private Integer code;
  private String message;
  //枚举类型的构造默认为私有
 
  private ResultCode(Integer code, String message) {
    this.code = code;
    this.message = message;
  }
}

六、创建基础pojo

在所有的数据库表种，共有的字段是ID，现在将id独立出来

1、导入 mybatis-plus-annotation包

为了使用该包内部的IdType等类内部提供的注解，以告诉BasePojo中某些字段在数据库表中的存在与否


<dependency>
  <groupId>com.baomidou</groupId>
  <artifactId>mybatis-plus-annotation</artifactId>
  <version>3.0-RELEASE</version>
</dependency>

2、BasePojo类


package com.hanmh.pojo;
 
import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableField;
import com.baomidou.mybatisplus.annotation.TableId;
import lombok.Data;
import org.omg.CORBA.IDLType;
 
@Data
public class BasePojo {
  @TableId(type = IdType.AUTO)
  private Integer id;
  
  //做分页操作需要的字段
  @TableField(exist = false)
  private Integer pageNO;
  @TableField(exist = false)
  private Integer pageSize;
}

七、后端添加数据

1、密码加密

（1）需要使用安全包提供加密服务（security）


<dependency>
  <groupId>org.springframework.security</groupId>
  <artifactId>spring-security-core</artifactId>
</dependency>

2、将加密类（BCryptPasswordEncoder）放入ioc容器

在SpringBoot环节，需要将某个类加入IOC容器，就需要在配置类中，配置@Bean节点


@Configuration
public class AdminConfig {
  @Bean
  //将BCryptPasswordEncoder放进IOC容器
  BCryptPasswordEncoder getPasswordEncoder() {
    return new BCryptPasswordEncoder();
  }
}

注：使用此方法对数据进行加密的原因：此加密方法相同明文密码多次可以生成不同的密文，而MD5相同密码则会生成相同的密文

3、后端添加数据简单实现


@PostMapping("/add")
ResultJson add(UmsAdmin umsAdmin) throws InterruptedException, IOException {
  //对密码加密
  umsAdmin.setPassword(passwordEncoder.encode(umsAdmin.getPassword()));
 
  //TimeUnit.SECONDS.sleep(2);
  return ResultJson.success(adminService.save(umsAdmin), "添加用户成功");
}

八、前端页面添加功能

1、添加用户（按钮和弹窗）


<el-button>：elementUI按钮标签
<el-button type="primary" plain @click="add">添加用户</el-button>
<!-- <el-dialog> 代表弹窗 :visible.sync表示显示或隐藏-->
<!-- close-on-click-modal代表点击对话框以外区域是否可以关闭 -->
<el-dialog 
:title="dialog.title" 
:visible.sync="dialog.show"
:close-on-click-modal="false"
width="450px">
 <AdminEdit :show.sync="dialog.show" v-if="dialog.show"></AdminEdit>
</el-dialog>

（1）添加用户功能


add() {
 this.dialog.show = true
 this.dialog.title = "添加用户"
}

（2）添加内容弹窗


<template>
 <div>
 <el-fORM :model="forms" :rules="rules" ref="ruleForm" label-width="100px">
  <el-form-item label="登录名" prop="loginName">
  <el-input v-model="forms.loginName" placeholder="请输入登录名"></el-input>
  </el-form-item>
  <el-form-item label="昵称" prop="name">
  <el-input v-model="forms.name" placeholder="请输入昵称"></el-input>
  </el-form-item>
  <el-form-item label="密码" prop="password">
  <el-input v-model="forms.password" placeholder="请输入密码" show-password></el-input>
  </el-form-item>
  <el-form-item label="邮箱" prop="email">
  <el-input v-model="forms.email" placeholder="请输入邮箱"></el-input>
  </el-form-item>
  <el-form-item label="手机号" prop="phone">
  <el-input v-model="forms.phone" placeholder="请输入手机号"></el-input>
  </el-form-item> 
  <el-form-item label="头像" prop="imGobj">
  
  </el-form-item>
  <el-form-item>
  <el-button size="small" type="primary" plain @click="save">保存</el-button>
  </el-form-item>
 </el-form>
 </div>
</template>
 
<script>
 export default{
 name: 'AdminEdit',
 props:{
  show:{
  type: Boolean
  }
 },
 data(){
  return {
  forms: {
   loginName: '',
   name: '',
   password: '',
   email: '',
   phone: '',
   imgobj: '这是一张图片'  
  },
  rules:{
   loginName:[
   {required: true, message: '请输入登录名', trigger: 'blur'},
   {min : 1, max: 20, message: '长度在1-20之间', trigger: 'change'}
   ],
   name:[
   {required: true, message: '请输入昵称', trigger: 'blur'},
   {min : 1, max: 20, message: '长度在1-20之间', trigger: 'change'}
   ],
   password:[
   {required: true, message: '请输入密码', trigger: 'blur'},
   {min : 1, max: 100, message: '长度在1-100之间', trigger: 'change'}
   ],
   email:[
   {required: true, message: '请输入邮箱', trigger: 'blur'},
   {min : 1, max: 50, message: '长度在1-50之间', trigger: 'change'},
   {type: 'email', message: '请输入正确格式的邮箱', trigger: 'blur'}
   ],
   phone:[
   {required: true, message: '请输入电话号', trigger: 'blur'},
   {min : 1, max: 20, message: '长度在1-20之间', trigger: 'change'},
   {pattern: /^1([38][0-9]|4[5-9]|5[0-3,5-9]|66|7[0-8]|9[89])[0-9]{8}$/, message: '请输入正确的手机号', trigger: 'blur'}
   ],
  }
  }
 },
 methods:{
  
  save() {
  //提交表单前需要对表单再次进行验证
  //获取表单对象
        
        //表单二次验证
  this.$refs['ruleForm'].validate((flag) => {
   //如果通过验证，则进行表单数据提交
   if(flag === true) {
   this.request('/umsadmin/add', 'post', this.forms, response => {
    this.$message.success(response.message)
   })
   }
  })
  },
  changeimg(file, fileList) {
  this.forms.imgobj = file.raw
  },
  removeimg() {
  this.forms.imgobj = null
  }
 }
 }
</script>
 
<style>
</style>

2、此时前端给后端发post请求会出现跨域错误

跨域错误解决需要在后端植入跨域过滤器（Bean节点）


//跨域问题解决
@Bean
CorsFilter getCorsFilter() {
  UrlBasedCorsConfigurationSource configurationSource = new UrlBasedCorsConfigurationSource();
  CorsConfiguration corsConfiguration = new CorsConfiguration();
  corsConfiguration.addAllowedHeader("*");
  corsConfiguration.addAllowedMethod("*");
  corsConfiguration.addAllowedOrigin("*"); //域名
  configurationSource.reGISterCorsConfiguration("/**", corsConfiguration);
  
  return new CorsFilter(configurationSource);
}

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