spring boot 、maven、mybatis-plus、postman
需要安装idea、jvm、maven、mysql
采用调用接口的形式返回给前端
纯接口，没有.jsp，没有.html
接口功能：
1、登陆：
1）输入用户名密码登陆
2）使用md5加密与数据库的密文做验证
2、注册：
1）输入用户名、密码、性别、年龄、电话号码
2）用户名、密码、年龄、电话号码均采用正则校验规范
3、通过用户名获取用户数据
1）输入用户名
4、获取所有用户的所有数据
参考我的另一篇博客新建spring boot项目
https://blog.csdn.net/obitosbb/article/details/116002990
ApiRest.class
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package com.example.demo02.commom.resp;
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import lombok.AllArgsConstructor;
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import lombok.Builder;
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import lombok.Data;
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import lombok.NoArgsConstructor;
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@Data
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@AllArgsConstructor
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@NoArgsConstructor
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@Builder
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public
class ApiResp <T> {
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/**
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* true: 成功的
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* false: 失败的
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*/
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private
boolean success;
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/**
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* 错误码
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*/
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private String code;
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/**
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* 错误信息
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*/
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private String msg;
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/**
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* 数据
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*/
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private T data;
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/**
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* 单纯返回成功响应
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* @return
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*/
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-
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public
static <T>
ApiResp repuestMessage(boolean success,String code,String msg,T data){
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ApiResp apiResp = ApiResp.builder().success(
true).code(code).msg(msg).data(data).build();
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return apiResp;
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}
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public static ApiResp successResp(){
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ApiResp apiResp = ApiResp.builder().success(
true).build();
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return apiResp;
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}
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public
static <T>
ApiResp successResp(String msg,T data){
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ApiResp apiResp = ApiResp.builder().success(
true).msg(msg).data(data).build();
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return apiResp;
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}
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public
static <T>
ApiResp successResp(String code,String msg,T data){
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ApiResp apiResp = ApiResp.builder().success(
true).code(code).msg(msg).data(data).build();
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return apiResp;
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}
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public static ApiResp failResp(){
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ApiResp apiResp = ApiResp.builder().success(
false).build();
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return apiResp;
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}
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public static ApiResp failResp(String msg){
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ApiResp apiResp = ApiResp.builder().success(
false).code(
"1111").msg(msg).build();
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return apiResp;
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}
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public static ApiResp failResp(String code, String msg){
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ApiResp apiResp = ApiResp.builder().success(
false).code(code).msg(msg).build();
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return apiResp;
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}
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public
static <T>
ApiResp failResp(String code,String msg,T data){
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ApiResp apiResp = ApiResp.builder().success(
false).code(code).msg(msg).data(data).build();
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return apiResp;
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}
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public
static <T>
ApiResp inputSpecification(String msg){
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ApiResp apiResp = ApiResp.builder().msg(msg).build();
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return apiResp;
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}
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}
Demo01Controller.class
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package com.example.demo02.controller;
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import com.example.demo02.commom.resp.ApiResp;
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import com.example.demo02.model.Demo01;
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import com.example.demo02.service.IDemo01Service;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.web.bind.annotation.*;
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import javax.annotation.Resource;
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import java.util.HashMap;
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import java.util.Scanner;
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import java.util.List;
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import java.util.Map;
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/**
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* <p>
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* 用户信息表 前端控制器
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* </p>
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*
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* @author AutoCoder
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* @since 2021-04-10
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*/
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@RestController
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@RequestMapping("/test")
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@Slf4j
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public
class Demo01Controller {
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@Resource
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private IDemo01Service demo01Service;
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@GetMapping("/message")
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public List<Demo01> message(){
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List<Demo01> demo01 = demo01Service.message();
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return demo01;
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}
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@PostMapping("/userMessage")
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public ApiResp userMessage(@RequestBody Demo01 demo01){
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demo01 = demo01Service.selectMessage(demo01.getUsername());
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return demo01 ==
null ? ApiResp.failResp(
"查询失败"):ApiResp.successResp(
"查询成功",demo01);
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}
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@PostMapping("/login")
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public ApiResp login(@RequestBody Demo01 demo01){
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Demo01 demo011 = demo01Service.isRegistration(demo01.getUsername(),demo01.getPassword());
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//log.info("[Demo01Controller.serverStart] demo011 = {}",JSON.toJSONString(demo011));
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if(
null == demo011){
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//log.info("[Demo01Controller.serverStart] 登陆失败");
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return ApiResp.failResp(
"登陆失败");
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}
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demo011.setPassword(
"");
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return ApiResp.successResp(
"登陆成功",demo011);
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}
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@PostMapping("/registration")
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public ApiResp registration(@RequestBody Demo01 demo01){
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//int demo011 = demo01Service.addUser(demo01.getUsername(),demo01.getPassword(), demo01.isSex(), demo01.getPhone(),demo01.getAge());
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//return demo011 == 0 ? ApiResp.repuestMessage(false,"400","注册失败",demo011):ApiResp.repuestMessage(true,"200","注册成功",demo011);
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ApiResp demo011 = demo01Service.addUser(demo01.getUsername(),demo01.getPassword(), demo01.isSex(), demo01.getPhone(),demo01.getAge());
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return demo011;
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}
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}
Demo01Mapper.interface
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package com.example.demo02.mapper;
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import com.example.demo02.commom.resp.ApiResp;
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import com.example.demo02.model.Demo01;
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import com.baomidou.mybatisplus.core.mapper.BaseMapper;
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import org.apache.ibatis.annotations.Insert;
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import org.apache.ibatis.annotations.Param;
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import org.apache.ibatis.annotations.Select;
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import java.util.List;
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/**
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* <p>
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* 用户信息表 Mapper 接口
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* </p>
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*
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* @author AutoCoder
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* @since 2021-04-10
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*/
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public
interface Demo01Mapper extends BaseMapper<Demo01> {
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@Select("select * from demo01 where username = #{username} and password = #{password}")
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public Demo01 isRegistration(@Param("username") String Username,@Param("password") String password);
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@Insert("insert into demo01(username,password,sex,phone,age) values(#{username},#{password},#{sex},#{phone},#{age})")
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public int addUser(@Param("username") String username, @Param("password") String password, @Param("sex") boolean sex, @Param("phone") String phone, @Param("age") int age);
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@Select("select * from demo01 where username=#{username}")
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public Demo01 selectMessage(@Param("username") String username);
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@Select("select * from demo01")
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public List<Demo01> message();
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}
Demo01.class
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package com.example.demo02.model;
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import com.baomidou.mybatisplus.annotation.IdType;
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import com.baomidou.mybatisplus.extension.activerecord.Model;
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import com.baomidou.mybatisplus.annotation.TableId;
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import lombok.Data;
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import lombok.EqualsAndHashCode;
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import lombok.NoArgsConstructor;
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import lombok.experimental.Accessors;
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import org.springframework.beans.factory.annotation.Autowired;
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/**
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* <p>
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* 用户信息表
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* </p>
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*
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* @author AutoCoder
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* @since 2021-04-10
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*/
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@Data
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@EqualsAndHashCode(callSuper = true)
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@Accessors(chain = true)
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public
class Demo01 extends Model {
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private
static
final
long serialVersionUID =
1L;
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@TableId(value = "userid", type = IdType.AUTO)
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private Integer userid;
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//@Resource
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@Autowired
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private String username;
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@Autowired
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private String password;
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@Autowired
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private
int age;
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@Autowired
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private
boolean sex;
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@Autowired
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private String phone;
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}
Demo01ServiceImpl.class
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package com.example.demo02.service.impl;
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import com.example.demo02.commom.resp.ApiResp;
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import com.example.demo02.model.Demo01;
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import com.example.demo02.mapper.Demo01Mapper;
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import com.example.demo02.service.IDemo01Service;
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import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
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import org.springframework.stereotype.Service;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import java.util.List;
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/**
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* <p>
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* 用户信息表 服务实现类
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* </p>
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*
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* @author AutoCoder
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* @since 2021-04-10
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*/
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@Service
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public
class Demo01ServiceImpl extends ServiceImpl<Demo01Mapper, Demo01> implements IDemo01Service {
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//帐号是否合法(字母开头，允许5-16字节，允许字母数字下划线)
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public boolean isUsername(String username){
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String pattern =
"^[a-zA-Z][a-zA-Z0-9_]{4,15}$";
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Pattern r = Pattern.compile(pattern);
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Matcher m = r.matcher(username);
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return m.matches();
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}
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//强密码(必须包含大小写字母和数字的组合，不能使用特殊字符，长度在 8-10 之间)
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public boolean isPassword(String password){
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String pattern =
"^(?=.*\\d)(?=.*[a-z])(?=.*[A-Z])[a-zA-Z0-9]{8,10}$";
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Pattern r = Pattern.compile(pattern);
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Matcher m = r.matcher(password);
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return m.matches();
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}
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//手机号码
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public boolean isPhone(String phone){
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String pattern =
"^(13[0-9]|14[5|7]|15[0|1|2|3|4|5|6|7|8|9]|18[0|1|2|3|5|6|7|8|9])\\d{8}$";
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Pattern r = Pattern.compile(pattern);
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Matcher m = r.matcher(phone);
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return m.matches();
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}
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public boolean isAge(int age){
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if(age>
1&&age>
150){
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return
false;
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}
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return
true;
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}
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public List<Demo01> message(){
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return baseMapper.message();
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}
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//是否已经注册
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public Demo01 isRegistration(String username,String password){
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password=MessageDigest5.interfaceMd5(password,
"utf-8");
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return baseMapper.isRegistration(username, password);
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}
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//增加用户
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public ApiResp addUser(String username, String password, boolean sex, String phone, int age){
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password=MessageDigest5.interfaceMd5(password,
"utf-8");
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String inputSpecification;
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if(!isUsername(username)){
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System.out.println(
"-------------用户名规范-------------");
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return ApiResp.inputSpecification(
"用户名不符合规范");
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}
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// if(!isPassword(password)){
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// return ApiResp.inputSpecification("密码不符合规范");
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// }
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if(!isPhone(phone)){
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return ApiResp.inputSpecification(
"电话号码不符合规范");
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}
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if(!isAge(age)){
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return ApiResp.inputSpecification(
"年龄不符合规范");
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}
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else{
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baseMapper.addUser(username,password,sex,phone,age);
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return ApiResp.inputSpecification(
"注册信息符合规范");
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}
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}
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//查询用户信息
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public Demo01 selectMessage(String username){
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return baseMapper.selectMessage(username);
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}
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}
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MessageDigest5.class
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package com.example.demo02.service.impl;
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import java.security.MessageDigest;
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public
class MessageDigest5 {
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private
static
final String hexDigits[] = {
"0",
"1",
"2",
"3",
"4",
"5",
"6",
"7",
"8",
"9",
"a",
"b",
"c",
"d",
"e",
"f" };
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/**
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* 将1个字节（1 byte = 8 bit）转为 2个十六进制位 1个16进制位 = 4个二进制位 （即4 bit）
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* 转换思路：最简单的办法就是先将byte转为10进制的int类型，然后将十进制数转十六进制
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*/
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private static String byteToHexString(byte b) {
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// byte类型赋值给int变量时，java会自动将byte类型转int类型，从低位类型到高位类型自动转换
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int n = b;
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// 将十进制数转十六进制
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if (n <
0)
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n +=
256;
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int d1 = n /
16;
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int d2 = n %
16;
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// d1和d2通过访问数组变量的方式转成16进制字符串；比如 d1 为12 ，那么就转为"c";
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// 因为int类型不会有a,b,c,d,e,f等表示16进制的字符
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return hexDigits[d1] + hexDigits[d2];
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}
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/**
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* 将字节数组里每个字节转成2个16进制位的字符串后拼接起来
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*/
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private static String byteArrayToHexString(byte b[]) {
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StringBuffer resultSb =
new StringBuffer();
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for (
int i =
0; i < b.length; i++) {
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resultSb.append(byteToHexString(b[i]));
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}
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return resultSb.toString();
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}
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/**
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* MD5算法 默认固定长度是 128bit 即 32个16进制位 String origin ：需要进行MD5计算的字符串 String
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* charsetname ：MD5算法的编码
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*/
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private static String MD5_32(String origin, String charsetname) {
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String resultString =
null;
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try {
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// 1，创建MessageDigest对象
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MessageDigest md = MessageDigest.getInstance(
"MD5");
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// 2，向MessageDigest传送要计算的数据;传入的数据需要转化为指定编码的字节数组
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md.update(origin.getBytes(charsetname));
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// 3，计算摘要
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byte[] bytesResult = md.digest();
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// 第2步和第3步可以合并成下面一步
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// byte[] bytesResult = md.digest(origin.getBytes(charsetname));
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// 4,将字节数组转换为16进制位
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resultString = byteArrayToHexString(bytesResult);
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}
catch (Exception e) {
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e.printStackTrace();
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}
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return resultString;
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}
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public static String interfaceMd5(String origin, String charsetname){
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return MD5_32(origin,charsetname);
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}
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}
IDemo01Service.interface
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package com.example.demo02.service;
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import com.example.demo02.commom.resp.ApiResp;
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import com.example.demo02.model.Demo01;
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import com.baomidou.mybatisplus.extension.service.IService;
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import org.springframework.beans.factory.annotation.Autowired;
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import java.util.List;
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/**
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* <p>
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* 用户信息表 服务类
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* </p>
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*
-
* @author AutoCoder
-
* @since 2021-04-10
-
*/
-
-
public
interface IDemo01Service extends IService<Demo01> {
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//int addUser(String username,String password,String sex,String phone,int age);
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Demo01 isRegistration(String username,String password);
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ApiResp addUser(String username, String password, boolean sex, String phone, int age);
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Demo01 selectMessage(String username);
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boolean isUsername(String username);
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boolean isPassword(String password);
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boolean isPhone(String phone);
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boolean isAge(int age);
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List<Demo01> message();
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}
数据库表
postman展示-注册功能
postman展示-登陆功能
postman展示-获取所有用户的所有数据
可能会遇到的问题和解决方案
1、不会新建Spring boot工程
解决：参看这篇文章开头的链接里的文章
2、新建的Spring boot工程跑不起来
解决：文件夹是否建错地方，数据库名、表名、密码、驱动是否修改
3、pom.xml一堆红线
解决：Spring boot自动加载，编译即可
4、直接复制有些类名就标红
解决：直接复制idea不自动加载，手打出来类名，标红的变黑后再删掉自己打的
欢迎交流讨论
转载：https://blog.csdn.net/obitosbb/article/details/116003854
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