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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