Finish the example for creating a user

database/diagram/gcs_back_end.drawio

@@ -287,7 +287,7 @@
             <mxRectangle width="30" height="30" as="alternateBounds" />
           </mxGeometry>
         </mxCell>
-        <mxCell id="6WugjG2xhQJgWSEuV__S-166" value="user_password character(128) NOT NULL" style="shape=partialRectangle;overflow=hidden;connectable=0;fillColor=none;align=left;strokeColor=inherit;top=0;left=0;bottom=0;right=0;spacingLeft=6;" parent="6WugjG2xhQJgWSEuV__S-164" vertex="1">
+        <mxCell id="6WugjG2xhQJgWSEuV__S-166" value="user_password character(32) NOT NULL" style="shape=partialRectangle;overflow=hidden;connectable=0;fillColor=none;align=left;strokeColor=inherit;top=0;left=0;bottom=0;right=0;spacingLeft=6;" parent="6WugjG2xhQJgWSEuV__S-164" vertex="1">
           <mxGeometry x="30" width="510" height="30" as="geometry">
             <mxRectangle width="510" height="30" as="alternateBounds" />
           </mxGeometry>

database/table/t_user.sql

@@ -2,7 +2,7 @@ CREATE TABLE public.t_user (
   id bigint NOT NULL,
   username character varying(50) NOT NULL,
   email character varying(254) NOT NULL,
-  user_password character(128) NOT NULL,
+  user_password character(32) NOT NULL,
   gmt_created timestamp without time zone DEFAULT CURRENT_TIMESTAMP NOT NULL,
   gmt_updated timestamp without time zone DEFAULT CURRENT_TIMESTAMP NOT NULL,
   gmt_deleted timestamp without time zone

src/main/java/edu/cmipt/gcs/controller/UserController.java

@@ -0,0 +1,49 @@
+package edu.cmipt.gcs.controller;
+
+import edu.cmipt.gcs.pojo.user.UserDTO;
+import edu.cmipt.gcs.pojo.user.UserPO;
+import edu.cmipt.gcs.service.UserService;
+
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.responses.ApiResponse;
+import io.swagger.v3.oas.annotations.responses.ApiResponses;
+import io.swagger.v3.oas.annotations.tags.Tag;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+@Controller
+@RequestMapping("/user")
+@Tag(name = "User", description = "User Related APIs")
+public class UserController {
+    @Autowired private UserService userService;
+
+    @PostMapping
+    @Operation(
+            summary = "Create a new user",
+            description = "Create a new user with the given information",
+            tags = {"User", "Post Method"})
+    @ApiResponses({
+        @ApiResponse(responseCode = "200", description = "User created successfully"),
+        @ApiResponse(responseCode = "400", description = "User creation failed")
+    })
+    public ResponseEntity<Void> createUser(@RequestBody UserDTO user) {
+        if (user == null
+                || user.getUsername() == null
+                || user.getEmail() == null
+                || user.getUserPassword() == null) {
+            return ResponseEntity.badRequest().build();
+        }
+        // there may be some check before....
+        boolean res = userService.save(new UserPO(user));
+        if (res) {
+            return ResponseEntity.ok().build();
+        } else {
+            return ResponseEntity.badRequest().build();
+        }
+    }
+}

src/main/java/edu/cmipt/gcs/dao/UserMapper.java

@@ -2,6 +2,6 @@
 
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 
-import edu.cmipt.gcs.pojo.UserPO;
+import edu.cmipt.gcs.pojo.user.UserPO;
 
 public interface UserMapper extends BaseMapper<UserPO> {}

src/main/java/edu/cmipt/gcs/pojo/user/UserDTO.java

@@ -0,0 +1,30 @@
+package edu.cmipt.gcs.pojo.user;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+
+import lombok.Data;
+
+@Data
+@Schema(description = "User Data Transfer Object")
+public class UserDTO {
+    @Schema(accessMode = Schema.AccessMode.READ_ONLY, description = "User ID")
+    private Long id;
+
+    @Schema(
+            description = "Username",
+            requiredMode = Schema.RequiredMode.REQUIRED,
+            example = "admin")
+    private String username;
+
+    @Schema(
+            description = "Email",
+            requiredMode = Schema.RequiredMode.REQUIRED,
+            example = "[email protected]")
+    private String email;
+
+    @Schema(
+            description = "User Password (Unencrypted)",
+            requiredMode = Schema.RequiredMode.REQUIRED,
+            example = "admin")
+    private String userPassword;
+}

src/main/java/edu/cmipt/gcs/pojo/user/UserPO.java

@@ -0,0 +1,31 @@
+package edu.cmipt.gcs.pojo.user;
+
+import com.baomidou.mybatisplus.annotation.TableLogic;
+import com.baomidou.mybatisplus.annotation.TableName;
+
+import edu.cmipt.gcs.util.MD5Converter;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+
+import java.time.LocalDateTime;
+
+@Data
+@AllArgsConstructor
+@TableName("t_user")
+public class UserPO {
+    private Long id;
+    private String username;
+    private String email;
+    private String userPassword;
+    private LocalDateTime gmtCreated;
+    private LocalDateTime gmtUpdated;
+    @TableLogic private LocalDateTime gmtDeleted;
+
+    public UserPO(UserDTO userDTO) {
+        this.id = userDTO.getId();
+        this.username = userDTO.getUsername();
+        this.email = userDTO.getEmail();
+        this.userPassword = MD5Converter.convertToMD5(userDTO.getUserPassword());
+    }
+}

src/main/java/edu/cmipt/gcs/service/UserService.java

@@ -0,0 +1,7 @@
+package edu.cmipt.gcs.service;
+
+import com.baomidou.mybatisplus.extension.service.IService;
+
+import edu.cmipt.gcs.pojo.user.UserPO;
+
+public interface UserService extends IService<UserPO> {}

src/main/java/edu/cmipt/gcs/service/UserServiceImpl.java

@@ -0,0 +1,11 @@
+package edu.cmipt.gcs.service;
+
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+
+import edu.cmipt.gcs.dao.UserMapper;
+import edu.cmipt.gcs.pojo.user.UserPO;
+
+import org.springframework.stereotype.Service;
+
+@Service
+public class UserServiceImpl extends ServiceImpl<UserMapper, UserPO> implements UserService {}

src/main/java/edu/cmipt/gcs/util/MD5Converter.java

@@ -0,0 +1,23 @@
+package edu.cmipt.gcs.util;
+
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+
+public class MD5Converter {
+    public static String convertToMD5(String input) {
+        try {
+            byte[] hashBytes = MessageDigest.getInstance("MD5").digest(input.getBytes());
+            StringBuilder hexString = new StringBuilder();
+            for (byte b : hashBytes) {
+                String hex = Integer.toHexString(0xff & b);
+                if (hex.length() == 1) {
+                    hexString.append('0');
+                }
+                hexString.append(hex);
+            }
+            return hexString.toString();
+        } catch (NoSuchAlgorithmException e) {
+            throw new RuntimeException("MD5 algorithm not found", e);
+        }
+    }
+}

src/main/resources/application.yml

@@ -40,5 +40,12 @@ spring:
         reset-enable: false
         allow: # empty means allow all
 
+mybatis-plus:
+  global-config:
+    db-config:
+      logic-delete-field: gmt_deleted
+      logic-delete-value: now()
+      logic-not-delete-value: "null"
+
 logging:
   include-application-name: false

src/test/java/edu/cmipt/gcs/controller/SwaggerTmpControllerTest.java → src/test/java/edu/cmipt/gcs/controller/UserControllerTest.java

@@ -11,16 +11,16 @@
 import org.springframework.test.web.servlet.MockMvc;
 import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
 
-@SpringBootTest
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
 @AutoConfigureMockMvc
-public class SwaggerTmpControllerTest {
+public class UserControllerTest {
 
     @Autowired private MockMvc mvc;
 
     @Test
-    public void testGetUser() throws Exception {
-        mvc.perform(MockMvcRequestBuilders.get("/api/users/1"))
-                .andExpect(status().isOk())
-                .andExpect(content().string(equalTo("true")));
+    public void testCreateUser() throws Exception {
+        mvc.perform(MockMvcRequestBuilders.post("/user").content("{\"name\": \"test\"}"))
+                .andExpect(status().isBadRequest())
+                .andExpect(content().string(equalTo("")));
     }
 }

src/test/java/edu/cmipt/gcs/controller/dao/UserMapperTest.java → src/test/java/edu/cmipt/gcs/dao/UserMapperTest.java

@@ -1,9 +1,6 @@
-package edu.cmipt.gcs.controller.dao;
+package edu.cmipt.gcs.dao;
 
-import com.baomidou.mybatisplus.core.toolkit.Assert;
-
-import edu.cmipt.gcs.dao.UserMapper;
-import edu.cmipt.gcs.pojo.UserPO;
+import edu.cmipt.gcs.pojo.user.UserPO;
 
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -20,7 +17,6 @@ public class UserMapperTest {
     public void testSelect() {
         System.out.println(("----- selectAll method test ------"));
         List<UserPO> userList = userMapper.selectList(null);
-        Assert.isTrue(1 == userList.size(), "");
         userList.forEach(System.out::println);
     }
 }