init

ietmwebbackend/src/main/java/com/backend/webbackend/Tools/Tools.java

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+package com.backend.webbackend.Tools;
+import com.backend.webbackend.mapper.UserMapper;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+import org.springframework.stereotype.Service;
+
+import java.util.regex.Pattern;
+
+@Service
+public class Tools {
+
+    private static final Pattern CN_MOBILE_PATTERN = Pattern.compile("^1[3-9]\\d{9}$");
+    // 定义编码器，解决 PASSWORD_ENCODER 无法解析
+    private static final BCryptPasswordEncoder PASSWORD_ENCODER = new BCryptPasswordEncoder();
+
+    @Autowired
+    private final UserMapper userMapper;
+
+    public Tools(UserMapper userMapper) {
+        this.userMapper = userMapper;
+    }
+
+    //校验用户名唯一性
+    public boolean checkUsernameUnique(String username) {
+        return userMapper.countByUsername(username)==0;
+    }
+
+    //校验手机号格式合法性
+    public boolean checkPhoneUnique(String phone) {
+        if (phone == null) {
+            return false;
+        }
+        String p = phone.trim();
+        return CN_MOBILE_PATTERN.matcher(p).matches();
+    }
+
+    // 用户名密码加密处理（BCrypt：加盐慢哈希）
+    public String encryptPassword(String password) {
+        if (password == null || password.trim().isEmpty()) {
+            throw new IllegalArgumentException("密码不能为空");
+        }
+        return PASSWORD_ENCODER.encode(password);
+    }
+
+    // 校验明文密码是否匹配已加密密码
+    public boolean matchesPassword(String rawPassword, String encodedPassword) {
+        if (rawPassword == null || encodedPassword == null) {
+            return false;
+        }
+        return PASSWORD_ENCODER.matches(rawPassword, encodedPassword);
+    }
+}