idea spring Initializr创建项目
勾选项目所需要的依赖
pom.xml文件会加载勾选的依赖，也可以不勾选后面通过自己常用的pom.xml统一导入。
- Lombok 可以通过注解省去一些get，set方法。
简单项目常用pom.xml：
mybatis-plus、mybatis、
4.0.0org.springframework.bootspring-boot-starter-parent2.7.3com.example.communityspringboot030.0.1-SNAPSHOTspringboot03springboot031.8org.springframework.bootspring-boot-starter-weborg.mybatis.spring.bootmybatis-spring-boot-starter2.2.2mysqlmysql-connector-javaruntimeorg.springframework.bootspring-boot-starter-testtestorg.projectlomboklombokcom.baomidoumybatis-plus-boot-starter3.4.2com.alibabadruid1.1.13io.jsonwebtokenjjwt0.9.1org.codehaus.jacksonjackson-mapper-asl1.9.13org.springframework.bootspring-boot-starter-mailorg.springframework.bootspring-boot-configuration-processortrueorg.springframework.bootspring-boot-maven-plugin
整体项目结构
创建User实体类放入Enity下
@TableName("user")是实体对应的表的名字
@TableId(type = IdType.AUTO)表的主键
@TableField(exist = false)不存在，就不会返回空。
package com.example.community.enity;
import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableField;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import lombok.Data;
@Data
@TableName("user")
public class User {
@TableId(type = IdType.AUTO)
private Integer userId;
private String email;
private String username;
private String password;
private String avatar;
private String phone;
@TableField(exist = false)
private String code;
public User(String email, String password) {
this.email = email;
this.password = password;
}
}
创建通用返回的结果类
可以使用泛型传入对应的实体类，这里我就不传了。
package com.example.community.common;
import lombok.Data;
@Data
public class R {
private Integer code;
private String msg;
private Object data;
public R(Integer code, String msg, Object ob) {
this.code = code;
this.msg = msg;
this.data = ob;
}
public R(Integer code, String msg) {
this.code = code;
this.msg = msg;
}
public static R success(String msg){
R r= new R(1,msg);
return r;
}
public static R success(String msg,Object ob){
R r= new R(1,msg,ob);
return r;
}
public static R error(String msg){
R r= new R(0,msg,null);
return r;
}
}
创建controller
在controller里可以对前端的请求进行一个分发，处理。根据地址链接找到对应的controller。
登入模块，可以创建一个UserController处理用户的相关信息。
package com.example.community.controller;
import com.example.community.common.R;
import com.example.community.enity.User;
import com.example.community.service.UserService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import javax.servlet.http.HttpSession;
import java.util.Map;
@Slf4j
@RestController()
@RequestMapping("/user")
@CrossOrigin(origins = {"http://localhost:8090", "null"})
public class UserController {
@Autowired
UserService service;
@PostMapping("/login")
public R login(@RequestBody User user) {
log.info("user"+user.toString());
return service.login(user.getEmail(), user.getPassword());
}
@PostMapping("/register")
@ResponseBody
public R register(@RequestBody Map data, HttpSession session) {
log.info(data.toString());
String code1 = (String) session.getAttribute("code");
String email1 = (String) session.getAttribute("email");
log.info("---------------------------");
log.info(email1);
log.info(code1);
log.info("---------------------------");
if(code1 == null || email1 == null){
return R.error("验证码已过期或邮箱有误");
}
if (!data.get("password").equals(data.get("password_confirmation"))) {
return R.error("两次密码不一致");
}
if (!email1.equals(data.get("email").toString())) {
return R.error("邮箱错误");
}
if (!code1.equals(data.get("code").toString())) {
return R.error("验证码错误");
}
User user1 = new User(data.get("email").toString(), data.get("password").toString());
return service.register(user1);
}
}
创建service层
service层给controller层提供服务，调用dao层mapper查询数据库的数据，提供相对应的服务。
在这里我是用了mybtis-plus来进行数据库简单的查询。
用户模块的service层代码：
UserService接口
继承mybatis-plus的IService
package com.example.community.service;
import com.baomidou.mybatisplus.extension.service.IService;
import com.example.community.common.R;
import com.example.community.enity.User;
public interface UserService extends IService {
public R selectUserByUsername(String name);
public R login(String username, String password);
public R register(User user);
public R logout(String token);
}
UserService实现类
在这个类中，调用了mapper提供的方法。
继承ServiceImpl
package com.example.community.service.impl;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.example.community.Mapper.UserMapper;
import com.example.community.common.R;
import com.example.community.enity.User;
import com.example.community.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class UserServiceImpl extends ServiceImpl implements UserService {
@Autowired
private UserMapper userMapper;
@Override
public R selectUserByUsername(String name){
return null;
}
@Override
public R login(String email, String password){
User user = userMapper.selectOne(new QueryWrapper().eq("email", email));
if(user == null){
return R.error("用户不存在");
}
if(!user.getPassword().equals(password)){
return R.error("密码错误");
}
return R.success("登录成功");
}
@Override
public R register(User user){
User user1 = userMapper.selectOne(new QueryWrapper().eq("username", user.getUsername()));
if(user1 != null){
return R.error("用户已存在");
}
userMapper.insert(user);
return R.success("注册成功");
}
@Override
public R logout(String token){
return null;
}
}
创建Mapper / Dao层
使用了mybatis-plus，所以只需要继承BaseMapper既可。
package com.example.community.Mapper;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.example.community.enity.User;
import org.apache.ibatis.annotations.Mapper;
@Mapper
public interface UserMapper extends BaseMapper {
}
邮箱验证码、生成Token
- 使用邮箱进行登入验证码验证
- 使用
jwt生成token返回给前端，服务端可以用来判断用户是否登入。并且支持跨域
实现这两个功能需要使用到一些工具类和配置，如下：
package com.example.community.utils;
import io.jsonwebtoken.Jwt;
import io.jsonwebtoken.JwtBuilder;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
public class JWTUtils {
private static final String jwtToken = "123456Mszlu!@#$$";
public static String createToken(Long userId) {
Map claims = new HashMap();
claims.put("userId", userId);
JwtBuilder jwtBuilder = Jwts.builder()
.signWith(SignatureAlgorithm.HS256, jwtToken) // 签发算法，秘钥为jwtToken
.setClaims(claims) // body数据，要唯一，自行设置
.setIssuedAt(new Date()) // 设置签发时间
.setExpiration(new Date(System.currentTimeMillis() + 24 * 60 * 60 * 1000));// 一天的有效时间
String token = jwtBuilder.compact();
return token;
}
public static Map checkToken(String token) {
try {
Jwt parse = Jwts.parser().setSigningKey(jwtToken).parse(token);
return (Map) parse.getBody();
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
拦截器的配置
package com.example.community.handler;
import com.alibaba.druid.util.StringUtils;
import com.example.community.common.R;
import com.example.community.utils.JsonUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@Component
@Slf4j
public class LoginInterceptor implements HandlerInterceptor {
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response,Object handler) throws Exception{
log.info("请求被拦截{}",request);
if(!(handler instanceof HandlerMethod)){
return true;
}
String token = request.getHeader("Authorization");
log.info("token:{}",token);
if(StringUtils.isEmpty(token)){
R r= R.error("未登录");
response.setContentType("application/json;charset=utf-8");
log.info("{}",r);
response.getWriter().print(JsonUtil.objectToJson(r));
return false;
}
return true;
}
}
package com.example.community.config;
import com.example.community.handler.LoginInterceptor;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
@Configuration
public class WebMvcConfig implements WebMvcConfigurer {
@Override
public void addInterceptors(InterceptorRegistry registry) {
// 用户拦截器
registry.addInterceptor(new LoginInterceptor())
// 需要拦截的请求
.addPathPatterns("/user/**","/article/**")
// 需要放行的请求
.excludePathPatterns("/user/login","/user/register","/mail/**")
// 添加swagger-ui的放行路径
.excludePathPatterns("/swagger-resources/**", "/webjars/**", "/v2/**", "/swagger-ui.html/**", "/doc.html/**")
;
}
@Override
public void addCorsMappings(CorsRegistry registry) {
registry.addMapping("/**")
.allowedOriginPatterns("*")
.allowedMethods("POST", "GET", "PUT", "OPTIONS", "DELETE")
.maxAge(3600)
.allowCredentials(true);
}
}
实现邮箱认证登入，之前写过一个，传送门
总结
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