Python 官方文档:入门教程 => 点击学习
目录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.properties6、在启
data_test.sql:
;
;
;
;
;
;
CREATE DATABASE `data_test` ;
USE `data_test`;
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;
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;
;
;
;
;
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:
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:
<?xml version="1.0" encoding="UTF-8"?>
<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>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.4.5</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.keafmd</groupId>
<artifactId>springboot-server</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>springboot-server</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-WEB</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
</dependency>
<dependency>
<groupId>com.Google.guava</groupId>
<artifactId>guava</artifactId>
<version>20.0</version>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.3.2</version>
</dependency>
<dependency>
<groupId>Mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.49</version>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-generator</artifactId>
<version>3.3.2</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.freemarker</groupId>
<artifactId>freemarker</artifactId>
<version>2.3.31</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>io.GitHub.yedaxia</groupId>
<artifactId>japidocs</artifactId>
<version>1.4.3</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/com.google.code.gson/gson -->
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.8.6</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/com.alibaba/fastJSON -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.73</version>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-beanutils/commons-beanutils -->
<dependency>
<groupId>commons-beanutils</groupId>
<artifactId>commons-beanutils</artifactId>
<version>1.9.4</version>
</dependency>
<!-- 解密程序 https://mvnrepository.com/artifact/org.bouncycastle/bcprov-jdk15on -->
<dependency>
<groupId>org.bouncycastle</groupId>
<artifactId>bcprov-jdk15on</artifactId>
<version>1.68</version>
</dependency>
<!--Jwt 依赖 -->
<dependency>
<groupId>com.auth0</groupId>
<artifactId>java-jwt</artifactId>
<version>3.4.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<excludes>
<exclude>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
</build>
</project>
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;
public class CodeGenerator {
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();
}
}
在控制台输入user(表名)
红框内为自动生成的代码:
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
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);
}
}
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;
@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;
@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;
@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;
@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;
@Configuration
public class AppConfig extends WebMvcConfigurationSupport {
@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("
@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;
@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());
}
}
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;
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;
@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;
@RestController
@RequestMapping("/user")
public class UserController {
@Autowired
UserService userService;
@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));
}
@RequestMapping("/getById")
CommonResult getById(Integer id) {
return CommonResult.success(userService.getById(id));
}
@RequestMapping("/del")
CommonResult del(Integer id ) {
User user = userService.getById(id);
user.setUserState("0");
return CommonResult.success(userService.updateById(user));
}
@RequestMapping("/delByIds")
CommonResult delByIds(Integer[] id) {
return CommonResult.success(userService.removeByIds(Arrays.asList(id)));
}
}
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
到此这篇关于SpringBoot+MyBatisPlus+Vue 前后端分离项目快速搭建过程(后端)的文章就介绍到这了,更多相关SpringBoot+MyBatisPlus+Vue 前后端分离搭建内容请搜索编程网以前的文章或继续浏览下面的相关文章希望大家以后多多支持编程网!
--结束END--
本文标题: SpringBoot+MyBatisPlus+Vue 前后端分离项目快速搭建过程(后端)
本文链接: https://lsjlt.com/news/125079.html(转载时请注明来源链接)
有问题或投稿请发送至: 邮箱/279061341@qq.com QQ/279061341
2024-03-01
2024-03-01
2024-03-01
2024-02-29
2024-02-29
2024-02-29
2024-02-29
2024-02-29
2024-02-29
2024-02-29
回答
回答
回答
回答
回答
回答
回答
回答
回答
回答
0