version-1.7[添加依赖+简单crud+Spring security+(明文+密文)登录]

backend/pom.xml

@@ -16,6 +16,52 @@
     </properties>
 
     <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-security</artifactId>
+            <version>2.7.0</version>
+        </dependency>
+
+        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-jdbc -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-jdbc</artifactId>
+            <version>2.7.1</version>
+        </dependency>
+
+        <!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>1.18.24</version>
+            <scope>provided</scope>
+        </dependency>
+
+
+        <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
+        <dependency>
+            <groupId>mysql</groupId>
+            <artifactId>mysql-connector-java</artifactId>
+            <version>8.0.30</version>
+        </dependency>
+
+        <!-- https://mvnrepository.com/artifact/com.baomidou/mybatis-plus-boot-starter -->
+        <dependency>
+            <groupId>com.baomidou</groupId>
+            <artifactId>mybatis-plus-boot-starter</artifactId>
+            <version>3.5.2</version>
+        </dependency>
+
+        <!-- https://mvnrepository.com/artifact/com.baomidou/mybatis-plus-generator -->
+        <dependency>
+            <groupId>com.baomidou</groupId>
+            <artifactId>mybatis-plus-generator</artifactId>
+            <version>3.5.3</version>
+        </dependency>
+
+
+
+
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-thymeleaf</artifactId>

backend/src/main/java/com/kob/backend/config/CorsConfig.java

@@ -1,3 +1,5 @@
+//复制粘贴  【解决跨域问题】
+
 package com.kob.backend.config;
 
 import org.springframework.context.annotation.Configuration;

backend/src/main/java/com/kob/backend/config/SecurityConfig.java

@@ -0,0 +1,20 @@
+//实现用户密码的加密存储。==>加上此文件，必须是密文存储
+
+package com.kob.backend.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+import org.springframework.security.crypto.password.PasswordEncoder;
+
+@Configuration
+@EnableWebSecurity
+
+public class SecurityConfig {
+
+    @Bean
+    public PasswordEncoder passwordEncoder() {
+        return new BCryptPasswordEncoder();//返回加密方法
+    }
+}

backend/src/main/java/com/kob/backend/controller/pk/IndexController.java

@@ -4,10 +4,9 @@ import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
 
 @Controller
-
 public class IndexController {
 
-    @RequestMapping("")
+    @RequestMapping( "/")
     public String index()
     {
         return "pk/index.html";

backend/src/main/java/com/kob/backend/controller/user/UserController.java

@@ -0,0 +1,79 @@
+package com.kob.backend.controller.user;
+
+
+//@ResponseBody        把return的结果变为Json等数据，
+//@Controller          返回jsp,html页面+跳转
+//@Controller + @ResponseBody    返回json等数据
+//@RestController      返回json等数据,不能是jsp,html【@Controller+@responseBody】
+
+//@RequestMapping       给出外界访问方法的路径，或者说触发路径 ，触发条件
+//@GetMapping
+//PostMapping
+
+//@AutoWired：自动导入依赖的bean。[用到mapper层的接口时,数据库，写上去]
+//byType方式。把配置好的Bean拿来用，完成属性、方法的组装，它可以对类成员变量、方法及构造函数进行标注，完成自动装配的工作。
+//当加上（required=false）时，就算找不到bean也不报错。
+//它可以对类成员变量、方法及构造函数进行标注，让 spring 完成 bean 自动装配的工作。
+
+//mapper接口    被mybatis实现
+//接口实例调用mybatis的crud
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.kob.backend.mapper.UserMapper;
+import com.kob.backend.pojo.User;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+//@@@@@@@@@@@@@@@   实现了【增删查】   @@@@@@@@@@@@@@@@
+@RestController
+public class UserController {
+
+    @Autowired
+    UserMapper userMapper;
+
+    /*查询所有用户*/
+    @GetMapping("/user/all/")
+    public List<User> getAll()
+    {
+        return userMapper.selectList(null);
+    }
+
+    /*查询单个用户*/
+    @GetMapping("/user/{userId}/")
+    public User getUser(@PathVariable int userId)
+    {
+        QueryWrapper<User> queryWrapper = new QueryWrapper<>();
+        queryWrapper.eq("id",userId);
+        return userMapper.selectOne(queryWrapper);
+        // 范围遍历
+        // public List<User> getUser(int userId)
+        // queryWrapper.ge("id", 2).le("id", 3);
+        // return userMapper.selectList(queryWrapper);
+    }
+
+    /*添加一个用户*/
+    @GetMapping("/user/add/{userId}/{username}/{password}/")
+    public String addUser(@PathVariable int userId,
+                          @PathVariable String username,
+                          @PathVariable String password)
+    {
+        PasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
+        String encoderPassword = passwordEncoder.encode(password);
+        User user = new User(userId,username,encoderPassword);
+        userMapper.insert(user);
+        return "Add User Sucessfully";
+    }
+
+    /*删除一个用户*/
+    @GetMapping("/user/delete/{userId}/")
+    public String deleteUser(@PathVariable int userId)
+    {
+        userMapper.deleteById(userId);
+        return "Delete User Successfully";
+    }
+
+}

backend/src/main/java/com/kob/backend/mapper/UserMapper.java

@@ -0,0 +1,16 @@
+package com.kob.backend.mapper;
+
+//但如User类
+import com.kob.backend.pojo.User;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import org.apache.ibatis.annotations.Mapper;
+
+//@Mapper注解  是由Mybatis框架中定义的一个描述数据层接口的注解，方便使用mybatis
+//BaseMapper<User>中有大量mybatis的 增删改查 的sql
+
+@Mapper
+public interface UserMapper extends BaseMapper<User> {
+
+
+}

backend/src/main/java/com/kob/backend/pojo/User.java

@@ -0,0 +1,21 @@
+package com.kob.backend.pojo;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+//@Data ： 注在类上，提供类的get、set、equals、hashCode、canEqual、toString方法
+//@AllArgsConstructor ： 注在类上，提供类的全参构造
+//@NoArgsConstructor ： 注在类上，提供类的无参构造
+//@Setter ： 注在属性上，提供 set 方法
+//@Getter ： 注在属性上，提供 get 方法
+//@EqualsAndHashCode ： 注在类上，提供对应的 equals 和 hashCode 方法
+//@Log4j/@Slf4j ： 注在类上，提供对应的 Logger 对象，变量名为 log
+
+@NoArgsConstructor
+@AllArgsConstructor
+@Data
+public class User {
+    private Integer id;
+    private String username;
+    private String password;
+}

backend/src/main/java/com/kob/backend/service/impl/UserDetailsServiceImpl.java

@@ -0,0 +1,41 @@
+package com.kob.backend.service.impl;
+
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.kob.backend.mapper.UserMapper;
+import com.kob.backend.service.impl.utils.UserDetailsImpl;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.security.core.userdetails.UserDetailsService;
+import org.springframework.security.core.userdetails.UsernameNotFoundException;
+
+import com.kob.backend.pojo.User;
+import org.springframework.stereotype.Service;
+
+
+//UserDetailsService接口      用来接入数据库信息。
+//@Override重写               作用：如果想重写父类的方法，
+//比如toString()方法的话，在方法前面加上@Override 系统可以帮你检查方法的正确性。
+//@Service           注解用于类上，标记当前类是一个service类，加上该注解会将当前类自动注入到spring容器中，
+
+//UserDetailsService接口      加载用户通过用户名   返回UserDetails接口实例   用户名找不到异常
+//UserDetails接口             实现具体用户状态【启用/过期/上锁等】
+
+@Service
+public class UserDetailsServiceImpl implements UserDetailsService{
+
+    @Autowired
+    private UserMapper userMapper;
+
+    @Override
+    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
+        QueryWrapper<User> queryWrapper = new QueryWrapper<User>();
+        queryWrapper.eq("username",username);
+        User user = userMapper.selectOne(queryWrapper);
+        if(user==null)
+        {
+            throw  new RuntimeException("用户不存在！");
+        }
+
+        return new UserDetailsImpl(user);//实现UserDetails接口
+    }
+}

backend/src/main/java/com/kob/backend/service/impl/utils/UserDetailsImpl.java

@@ -0,0 +1,56 @@
+package com.kob.backend.service.impl.utils;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import org.springframework.security.core.GrantedAuthority;
+import org.springframework.security.core.userdetails.UserDetails;
+
+import java.util.Collection;
+
+import com.kob.backend.pojo.User;
+
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+public class UserDetailsImpl implements UserDetails
+{
+
+    private User user;
+
+    @Override
+    public Collection<? extends GrantedAuthority> getAuthorities() {
+        return null;
+    }
+
+    @Override
+    public String getPassword() {
+        return user.getPassword();
+    }
+
+    @Override
+    public String getUsername() { return user.getUsername();}
+    //isAccountNonExpired 账户没有过期
+    @Override
+    public boolean isAccountNonExpired() {//账号没过期
+        return true;
+    }
+
+    //isAccountNonLocked   账户没有被锁定
+    @Override
+    public boolean isAccountNonLocked() {//账号没被锁定
+        return true;
+    }
+
+    //isCredentialsNonExpired 身份认证没过期
+    @Override
+    public boolean isCredentialsNonExpired() {//凭证没过期
+        return true;
+    }
+
+    //isEnabled  账户启用
+    @Override
+    public boolean isEnabled() {//用户已被禁用
+        return true;
+    }
+}

backend/src/main/resources/application.properties

@@ -1,27 +1,7 @@
-# 应用名称
-spring.application.name=backend
-# THYMELEAF (ThymeleafAutoConfiguration)
-# 开启模板缓存（默认值： true ）
-spring.thymeleaf.cache=true
-# 检查模板是否存在，然后再呈现
-spring.thymeleaf.check-template=true
-# 检查模板位置是否正确（默认值 :true ）
-spring.thymeleaf.check-template-location=true
-#Content-Type 的值（默认值： text/html ）
-spring.thymeleaf.content-type=text/html
-# 开启 MVC Thymeleaf 视图解析（默认值： true ）
-spring.thymeleaf.enabled=true
-# 模板编码
-spring.thymeleaf.encoding=UTF-8
-# 要被排除在解析之外的视图名称列表，⽤逗号分隔
-spring.thymeleaf.excluded-view-names=
-# 要运⽤于模板之上的模板模式。另⻅ StandardTemplate-ModeHandlers( 默认值： HTML5)
-spring.thymeleaf.mode=HTML5
-# 在构建 URL 时添加到视图名称前的前缀（默认值： classpath:/templates/ ）
-spring.thymeleaf.prefix=classpath:/templates/
-# 在构建 URL 时添加到视图名称后的后缀（默认值： .html ）
-spring.thymeleaf.suffix=.html
-# 应用服务 WEB 访问端口
 server.port=3000
 
+spring.datasource.username=root
+spring.datasource.password=dyh20011022
+spring.datasource.url=jdbc:mysql://localhost:3306/kob?serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=utf-8
+spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
 

backend/src/test/java/com/kob/backend/BackendApplicationTests.java

@@ -2,12 +2,22 @@ package com.kob.backend;
 
 import org.junit.jupiter.api.Test;
 import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+import org.springframework.security.crypto.password.PasswordEncoder;
 
 @SpringBootTest
-class BackendApplicationTests {
-
+class BackendApplicationTests
+{
     @Test
-    void contextLoads() {
+    void contextLoads()
+    {
+        PasswordEncoder passwordEncoder  = new BCryptPasswordEncoder();
+//        System.out.println(passwordEncoder.matches("yxc","$2a$10$3TiNxWq48h3Po1n3.NekNeTEOXYDJEgkvMkvXIVIBiaRQgZ9ArFIW"));
+//        System.out.println(passwordEncoder.matches("yxc","$2a$10$0cqbcHGmNmil3.4xdBPGveP2lhusn/ox4zZlbYOe2xYYjzzrBPg.6"));
+        System.out.println(passwordEncoder.encode("yxc"));
+        System.out.println(passwordEncoder.encode("passw2"));
+        System.out.println(passwordEncoder.encode("passw3"));
+//        System.out.println(passwordEncoder.encode("yxc"));
     }
 
 }