SpringBoot+MyBatisPlus+Vue 前后端分离项目快速搭建【后端篇】【快速生成后端代码、封装结果集、增删改查、模糊查找】【毕设基础框架】
前后端分离项目快速搭建【后端篇】
- 数据库准备
- 后端搭建
-
- 1、快速创建个SpringBoot项目
- 2、引入依赖
- 3、编写代码快速生成代码
- 4、运行代码生成器生成代码
- 5、编写application.properties
- 6、在启动类上添加@MapperScan
- 7、编写测试代码测试数据库是否连接正确
- 8、编写后端的工具类代码（封装结果集、日期处理、解决跨域请求）
- 9、编写后端的增删改查代码
- 前端搭建
-
- 由于篇幅有限，前端搭建单独再写一篇
数据库准备
data_test.sql：
/*
SQLyog Enterprise v12.08 (64 bit)
MySQL - 5.7.31 : Database - data_test
*********************************************************************
*/
/*!40101 SET NAMES utf8 */;
/*!40101 SET SQL_MODE=''*/;
/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;
CREATE DATABASE /*!32312 IF NOT EXISTS*/`data_test` /*!40100 DEFAULT CHARACTER SET utf8 */;
USE `data_test`;
/*Table structure for table `user` */
DROP TABLE IF EXISTS `user`;
CREATE TABLE `user` (
`user_id` int(11) NOT NULL AUTO_INCREMENT,
`user_name` varchar(50) CHARACTER SET utf8 NOT NULL COMMENT '账号',
`password` varchar(50) CHARACTER SET utf8 NOT NULL COMMENT '密码',
`user_state` varchar(10) CHARACTER SET utf8 NOT NULL DEFAULT '1' COMMENT '状态，逻辑删除',
PRIMARY KEY (`user_id`)
) ENGINE=InnoDB AUTO_INCREMENT=13 DEFAULT CHARSET=utf8;
/*Data for the table `user` */
LOCK TABLES `user` WRITE;
insert into `user`(`user_id`,`user_name`,`password`,`user_state`) values (1,'keafmd','keafmd','1'),(3,'21312321','123','0'),(11,'213','213','1'),(12,'keafmd','666','0');
UNLOCK TABLES;
/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;
后端搭建
1、快速创建个SpringBoot项目
第一步：Spring Initializr
第二步：Spring Initializr Project Settings
第三步：添加个Lombok工具
第四步：Finish
初始化的样子：
2、引入依赖
此处贴上整个pom.xml，部分依赖可能对于简单需求而言是多余的，可以自行舍弃。
pom.xml代码：
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0modelVersion>
<parent>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-parentartifactId>
<version>2.4.5version>
<relativePath/>
parent>
<groupId>com.keafmdgroupId>
<artifactId>springboot-serverartifactId>
<version>0.0.1-SNAPSHOTversion>
<name>springboot-servername>
<description>Demo project for Spring Bootdescription>
<properties>
<java.version>1.8java.version>
properties>
<dependencies>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-webartifactId>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-testartifactId>
<scope>testscope>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-devtoolsartifactId>
dependency>
<dependency>
<groupId>org.projectlombokgroupId>
<artifactId>lombokartifactId>
dependency>
<dependency>
<groupId>org.apache.commonsgroupId>
<artifactId>commons-lang3artifactId>
dependency>
<dependency>
<groupId>com.google.guavagroupId>
<artifactId>guavaartifactId>
<version>20.0version>
dependency>
<dependency>
<groupId>com.baomidougroupId>
<artifactId>mybatis-plus-boot-starterartifactId>
<version>3.3.2version>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<version>5.1.49version>
dependency>
<dependency>
<groupId>com.baomidougroupId>
<artifactId>mybatis-plus-generatorartifactId>
<version>3.3.2version>
<scope>testscope>
dependency>
<dependency>
<groupId>org.freemarkergroupId>
<artifactId>freemarkerartifactId>
<version>2.3.31version>
<scope>testscope>
dependency>
<dependency>
<groupId>io.github.yedaxiagroupId>
<artifactId>japidocsartifactId>
<version>1.4.3version>
<scope>testscope>
dependency>
<dependency>
<groupId>com.google.code.gsongroupId>
<artifactId>gsonartifactId>
<version>2.8.6version>
<scope>testscope>
dependency>
<dependency>
<groupId>com.alibabagroupId>
<artifactId>fastjsonartifactId>
<version>1.2.73version>
dependency>
<dependency>
<groupId>commons-beanutilsgroupId>
<artifactId>commons-beanutilsartifactId>
<version>1.9.4version>
dependency>
<dependency>
<groupId>org.bouncycastlegroupId>
<artifactId>bcprov-jdk15onartifactId>
<version>1.68version>
dependency>
<dependency>
<groupId>com.auth0groupId>
<artifactId>java-jwtartifactId>
<version>3.4.0version>
dependency>
dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-maven-pluginartifactId>
<configuration>
<excludes>
<exclude>
<groupId>org.projectlombokgroupId>
<artifactId>lombokartifactId>
exclude>
excludes>
configuration>
plugin>
plugins>
build>
project>
3、编写代码快速生成代码
因为此代码为辅助代码，放在test包下即可，相关的数据库信息以及包信息需要和你们自己的保持一致，自行修改，如何包命名和我一致，只需要修改数据库相关信息即可。
CodeGenerator：
package com.keafmd.mp;
import com.baomidou.mybatisplus.core.exceptions.MybatisPlusException;
import com.baomidou.mybatisplus.core.toolkit.StringPool;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
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 java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
/**
* Keafmd
*
* @ClassName: CodeGenerator
* @Description: 代码生成器
* @author: 牛哄哄的柯南
* @Date: 2021-04-29 17:06
* @Blog: https://keafmd.blog.csdn.net/
*/
public class CodeGenerator {
/**
*
* 读取控制台内容
*
*/
public static String scanner(String tip) {
Scanner scanner = new Scanner(System.in);
StringBuilder help = new StringBuilder();
help.append("请输入" + tip + "：");
System.out.println(help.toString());
if (scanner.hasNext()) {
String ipt = scanner.next();
if (StringUtils.isNotBlank(ipt)) {
return ipt;
}
}
throw new MybatisPlusException("请输入正确的" + tip + "！");
}
public static void main(String[] args) {
// 代码生成器
AutoGenerator mpg = new AutoGenerator();
// 全局配置
GlobalConfig gc = new GlobalConfig();
String projectPath = System.getProperty("user.dir");
// System.out.println("projectPath = " + projectPath);
gc.setOutputDir(projectPath + "/src/main/java");
// gc.setOutputDir("D:\\test");
gc.setAuthor("关注公众号：牛哄哄的柯南");
gc.setOpen(false);
// gc.setSwagger2(true); 实体属性 Swagger2 注解
gc.setServiceName("%sService");
mpg.setGlobalConfig(gc);
// 数据源配置
DataSourceConfig dsc = new DataSourceConfig();
dsc.setUrl("jdbc:mysql://127.0.0.1:3306/data_test?useUnicode=true&useSSL=false&characterEncoding=utf8&serverTimezone=UTC");
// dsc.setSchemaName("public");
dsc.setDriverName("com.mysql.jdbc.Driver");
dsc.setUsername("root");
dsc.setPassword("18044229");
mpg.setDataSource(dsc);
// 包配置
PackageConfig pc = new PackageConfig();
pc.setModuleName(null);
pc.setParent("com.keafmd");
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";
// 如果模板引擎是 velocity
// String templatePath = "/templates/mapper.xml.vm";
// 自定义输出配置
List<FileOutConfig> focList = new ArrayList<>();
// 自定义配置会被优先输出
focList.add(new FileOutConfig(templatePath) {
@Override
public String outputFile(TableInfo tableInfo) {
// 自定义输出文件名 ， 如果你 Entity 设置了前后缀、此处注意 xml 的名称会跟着发生变化！！
return projectPath + "/src/main/resources/com/keafmd/mapper/" + tableInfo.getEntityName() + "Mapper" + StringPool.DOT_XML;
}
});
cfg.setFileOutConfigList(focList);
mpg.setCfg(cfg);
// 配置模板
TemplateConfig templateConfig = new TemplateConfig();
templateConfig.setXml(null);
mpg.setTemplate(templateConfig);
// 策略配置
StrategyConfig strategy = new StrategyConfig();
strategy.setNaming(NamingStrategy.underline_to_camel);
strategy.setColumnNaming(NamingStrategy.underline_to_camel);
strategy.setEntityLombokModel(true);
strategy.setRestControllerStyle(true);
strategy.setInclude(scanner("表名，多个英文逗号分割").split(","));
strategy.setControllerMappingHyphenStyle(true);
strategy.setTablePrefix("m_");
mpg.setStrategy(strategy);
mpg.setTemplateEngine(new FreemarkerTemplateEngine());
mpg.execute();
}
}
4、运行代码生成器生成代码
在控制台输入user（表名）
红框内为自动生成的代码：
5、编写application.properties
个人习惯把application.properties改为application.yml，修改端口为80
server:
port: 80
spring:
datasource:
url: jdbc:mysql://127.0.0.1/data_test?useSSL=false&&characterEncoding=UTF-8
driver-class-name: com.mysql.jdbc.Driver
username: root
password: 18044229
jackson:
date-format: yyyy-MM-dd HH:mm:ss
time-zone: GMT+8
mvc:
throw-exception-if-no-handler-found: true
web:
resources:
add-mappings: false
6、在启动类上添加@MapperScan
SpringbootServerApplication：
package com.keafmd;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
@MapperScan("com.keafmd.mapper")
public class SpringbootServerApplication {
public static void main(String[] args) {
SpringApplication.run(SpringbootServerApplication.class, args);
}
}
7、编写测试代码测试数据库是否连接正确
1、在 UserMapper代码页大括号内，按下Alt+Insert，选择Test
2、Ok
3、自动生成了测试类
4、编写测试代码
UserMapperTest ：
package com.keafmd.mapper;
import com.keafmd.SpringbootServerApplication;
import com.keafmd.entity.User;
import com.keafmd.service.UserService;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
import javax.annotation.Resource;
import java.util.List;
import static org.junit.jupiter.api.Assertions.*;
@SpringBootTest(classes = SpringbootServerApplication.class)
class UserMapperTest {
@Resource
UserService userService;
@Test
public void test1(){
List<User> userList = userService.list();
for (User user : userList) {
System.out.println(user);
}
}
}
5、测试结果
至此，后端和数据库连接没问题。
8、编写后端的工具类代码（封装结果集、日期处理、解决跨域请求）
1、CommonResult
package com.keafmd.common;
import lombok.Getter;
/**
* Keafmd
*
* @ClassName: CommonResult
* @Description: 封装结果集
* @author: 牛哄哄的柯南
* @Date: 2021-04-29 18:11
* @Blog: https://keafmd.blog.csdn.net/
*/
@Getter
public class CommonResult {
private Integer code;
private String message;
private Object obj;
private CommonResult(Integer code, String message, Object obj) {
this.code = code;
this.message = message;
this.obj = obj;
}
public static CommonResult nohandler() {
return new CommonResult(ResultCode.NOHANDLER.getCode(), ResultCode.NOHANDLER.getMessage(),null);
}
public static CommonResult success(Object data) {
return new CommonResult(ResultCode.SUCCESS.getCode(), ResultCode.SUCCESS.getMessage(),data);
}
public static CommonResult failed() {
return new CommonResult(ResultCode.FAILED.getCode(), ResultCode.FAILED.getMessage(),null);
}
public static CommonResult failed(String message) {
return new CommonResult(ResultCode.FAILED.getCode(),message,null);
}
public static CommonResult notoken() {
return new CommonResult(ResultCode.NOTOKEN.getCode(), ResultCode.NOTOKEN.getMessage(),null);
}
public static CommonResult nopremiss() {
return new CommonResult(ResultCode.NOPERMISS.getCode(), ResultCode.NOPERMISS.getMessage(),null);
}
}
2、DateConverter
package com.keafmd.common;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.convert.converter.Converter;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.regex.Pattern;
/**
* Keafmd
*
* @ClassName: DateConverter
* @Description: 日期处理
* @author: 牛哄哄的柯南
* @Date: 2021-04-29 18:11
* @Blog: https://keafmd.blog.csdn.net/
*/
@Configuration
public class DateConverter implements Converter<String, Date> {
public DateConverter() {
// System.out.println("初始化........");
}
static List<SimpleDateFormat> sdfs = new ArrayList();
static {
sdfs.add(new SimpleDateFormat("yyyy/MM/dd HH:mm:ss"));
sdfs.add(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"));
sdfs.add(new SimpleDateFormat("yyyy-MM-dd"));
sdfs.add(new SimpleDateFormat("yyyy/MM/dd"));
}
@Override
public Date convert(String s) {
SimpleDateFormat sdf = null;
if (Pattern.matches("^\\d{4}-\\d{2}-\\d{2} \\d{2}:\\d{2}:\\d{2}$", s)) {
sdf = sdfs.get(1);
}
else if (Pattern.matches("^\\d{4}/\\d{2}/\\d{2} \\d{2}:\\d{2}:\\d{2}$", s)){
sdf = sdfs.get(0);
}
else if (Pattern.matches("^\\d{4}/\\d{2}/\\d{2}$", s)){
sdf = sdfs.get(3);
}
else if (Pattern.matches("^\\d{4}-\\d{2}/-\\d{2}}$", s)){
sdf = sdfs.get(2);
}
Date date = null;
try {
date = sdf.parse(s);
} catch (ParseException e) {
e.printStackTrace();
}
return date;
}
}
3、LocalDateTimeConverter
package com.keafmd.common;
import org.springframework.core.convert.converter.Converter;
import org.springframework.stereotype.Component;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
/**
* Keafmd
*
* @ClassName: LocalDateTimeConverter
* @Description: 日期处理
* @author: 牛哄哄的柯南
* @Date: 2021-04-29 18:11
* @Blog: https://keafmd.blog.csdn.net/
*/
@Component
public class LocalDateTimeConverter implements Converter<String, LocalDateTime> {
//2021-04-29%2001:02:03
@Override
public LocalDateTime convert(String s) {
return LocalDateTime.parse(s, DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
}
}
4、ResultCode
package com.keafmd.common;
import lombok.Getter;
/**
* Keafmd
*
* @ClassName: ResultCode
* @Description: 结果代码
* @author: 牛哄哄的柯南
* @Date: 2021-04-29 18:11
* @Blog: https://keafmd.blog.csdn.net/
*/
@Getter
public enum ResultCode {
NOHANDLER(404,"请求地址错误"),
SUCCESS(200,"操作成功"),
FAILED(500,"操作失败"),
NOTOKEN(401,"未登录或登录已超时"),
NOPERMISS(403,"无操作权限"),
;
private Integer code;
private String message;
ResultCode(Integer code, String message) {
this.code = code;
this.message = message;
}
}
5、AppConfig
package com.keafmd.config;
import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
import com.baomidou.mybatisplus.extension.plugins.pagination.dialects.MySqlDialect;
import com.baomidou.mybatisplus.extension.plugins.pagination.optimize.JsqlParserCountOptimize;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateSerializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
import com.keafmd.common.DateConverter;
import com.keafmd.common.LocalDateTimeConverter;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.format.FormatterRegistry;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.List;
/**
* Keafmd
*
* @ClassName: AppConfig
* @Description: 解决跨域请求
* @author: 牛哄哄的柯南
* @Date: 2021-04-29 18:11
* @Blog: https://keafmd.blog.csdn.net/
*/
@Configuration
public class AppConfig extends WebMvcConfigurationSupport {
/**
* 分页插件
* @return
*/
@Bean
public PaginationInterceptor paginationInterceptor() {
PaginationInterceptor paginationInterceptor = new PaginationInterceptor();
paginationInterceptor.setDialect(new MySqlDialect());
paginationInterceptor.setCountSqlParser(new JsqlParserCountOptimize(true));
return paginationInterceptor;
}
@Bean
FilterRegistrationBean<CorsFilter> cors(){
FilterRegistrationBean<CorsFilter> registrationBean = new FilterRegistrationBean<CorsFilter>();
CorsConfiguration config = new CorsConfiguration();
config.setAllowCredentials(true);
config.addAllowedOrigin("http://127.0.0.1:81");
config.addAllowedHeader("*");
config.addAllowedMethod("*");
UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
source.registerCorsConfiguration("/**", config);
CorsFilter filter = new CorsFilter(source);
registrationBean.setFilter(filter);
registrationBean.addUrlPatterns("/*");
return registrationBean;
}
/**
* curl http://127.0.0.1/user/getById?id=31
* @param converters
*/
@Override
protected void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
ObjectMapper objectMapper = new ObjectMapper();
objectMapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
objectMapper.disable(DeserializationFeature.ADJUST_DATES_TO_CONTEXT_TIME_ZONE);
// objectMapper.enable(SerializationFeature.WRITE_ENUMS_USING_TO_STRING);
objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL); //忽略 null 字段
JavaTimeModule javaTimeModule = new JavaTimeModule();
javaTimeModule.addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));
javaTimeModule.addSerializer(LocalDate.class, new LocalDateSerializer(DateTimeFormatter.ofPattern("yyyy-MM-dd")));
// javaTimeModule.addDeserializer(LocalDateTime.class, new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));
// javaTimeModule.addDeserializer(LocalDate.class, new LocalDateDeserializer(DateTimeFormatter.ofPattern("yyyy-MM-dd")));
objectMapper.registerModule(javaTimeModule);
converters.add(new MappingJackson2HttpMessageConverter(objectMapper));
}
@Override
protected void addFormatters(FormatterRegistry registry) {
super.addFormatters(registry);
registry.addConverter(new DateConverter());
registry.addConverter(new LocalDateTimeConverter());
}
}
6、DefaultExceptionHandler
package com.keafmd.config;
import com.keafmd.common.CommonResult;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.servlet.NoHandlerFoundException;
import javax.servlet.http.HttpServletRequest;
/**
* Keafmd
*
* @ClassName: DefaultExceptionHandler
* @Description:
* @author: 牛哄哄的柯南
* @Date: 2021-04-29 18:11
* @Blog: https://keafmd.blog.csdn.net/
*/
@RestControllerAdvice
public class DefaultExceptionHandler {
@ExceptionHandler
public CommonResult exceptionHandler(HttpServletRequest request, Exception ex) {
ex.printStackTrace();
if(ex instanceof NoHandlerFoundException) {
return CommonResult.nohandler();
}
return CommonResult.failed(ex.getMessage());
}
}
9、编写后端的增删改查代码
1、在UserService接口中编写分页查询代码
package com.keafmd.service;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.keafmd.entity.User;
import com.baomidou.mybatisplus.extension.service.IService;
/**
*
* 服务类
*
*
* @author 关注公众号：牛哄哄的柯南
* @since 2021-04-29
*/
public interface UserService extends IService<User> {
Page pageList(Page page, User user);
}
2、在UserServiceImpl实现类中实现分页查询和模糊查找
package com.keafmd.service.impl;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.keafmd.entity.User;
import com.keafmd.mapper.UserMapper;
import com.keafmd.service.UserService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.stereotype.Service;
/**
*
* 服务实现类
*
*
* @author 关注公众号：牛哄哄的柯南
* @since 2021-04-29
*/
@Service
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements UserService {
@Override
public Page pageList(Page page, User user) {
if(page == null){
page = new Page();
}
QueryWrapper wrapper = new QueryWrapper();
if(user!=null && StringUtils.isNotEmpty(user.getUserName())){
//根据user_name字段模糊查找
wrapper.like("user_name",user.getUserName());
}
return super.page(page,wrapper);
}
}
3、在UserController中编写增删改查代码
package com.keafmd.controller;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.keafmd.common.CommonResult;
import com.keafmd.entity.User;
import com.keafmd.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.Arrays;
/**
*
* 前端控制器
*
*
* @author 关注公众号：牛哄哄的柯南
* @since 2021-04-29
*/
@RestController
@RequestMapping("/user")
public class UserController {
@Autowired
UserService userService;
/**
* 查找
* @return
*/
@RequestMapping("/list")
CommonResult list(ModelMap modelMap, Page page, @ModelAttribute("user") User user) {
page = userService.pageList(page, user);
modelMap.addAttribute("page", page);
return CommonResult.success(page);
}
@RequestMapping("/save")
CommonResult save(User user){
return CommonResult.success(userService.saveOrUpdate(user));
}
/**
* 根据id查
* @param id
* @return
*/
@RequestMapping("/getById")
CommonResult getById(Integer id) {
return CommonResult.success(userService.getById(id));
}
/**
* 删除，逻辑删除
* @param id
* @return
*/
@RequestMapping("/del")
CommonResult del(Integer id ) {
User user = userService.getById(id);
user.setUserState("0");
return CommonResult.success(userService.updateById(user));
}
/**
* 批量删除
* @param id
* @return
*/
@RequestMapping("/delByIds")
CommonResult delByIds(Integer[] id) {
/*for (Integer integer : id) {
System.out.println(integer);
}*/
return CommonResult.success(userService.removeByIds(Arrays.asList(id)));
}
}
前端搭建
由于篇幅有限，前端搭建单独再写一篇
SpringBoot+MyBatisPlus+Vue 前后端分离项目快速搭建【前端篇】【快速生成后端代码、封装结果集、增删改查、模糊查找】【毕设基础框架】
以上就是SpringBoot+MyBatisPlus+Vue 前后端分离项目快速搭建【后端篇】【快速生成后端代码、封装结果集、增删改查、模糊查找】【毕设基础框架】的全部内容
看完如果对你有帮助，感谢点赞支持！
如果你是电脑端，看到右下角的 “一键三连” 了吗，没错点它[哈哈]
加油！
共同努力！
Keafmd