From 784f2e560327ff7ffd8d2851b5b46c284a2aac76 Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Thu, 25 Sep 2025 15:46:07 +0800
Subject: [PATCH] =?UTF-8?q?1.Spring-mybatis-=E5=88=A0=E9=99=A4=E5=AE=9E?=
 =?UTF-8?q?=E7=8E=B0-SQL=E6=B3=A8=E5=85=A5?=
MIME-Version: 1.0
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---
 .../src/main/java/com/inmind/mapper/EmpMapper.java    | 11 +++++++++++
 .../src/main/resources/application.properties         |  3 +++
 .../inmind/SpringbootMybatisCrudApplicationTests.java | 10 ++++++++++
 3 files changed, 24 insertions(+)

diff --git a/springboot-mybatis-crud/src/main/java/com/inmind/mapper/EmpMapper.java b/springboot-mybatis-crud/src/main/java/com/inmind/mapper/EmpMapper.java
index c5dcde4..791e7f7 100644
--- a/springboot-mybatis-crud/src/main/java/com/inmind/mapper/EmpMapper.java
+++ b/springboot-mybatis-crud/src/main/java/com/inmind/mapper/EmpMapper.java
@@ -1,8 +1,19 @@
 package com.inmind.mapper;
 
+import org.apache.ibatis.annotations.Delete;
 import org.apache.ibatis.annotations.Mapper;
 
 @Mapper
 public interface EmpMapper {
 
+    /*
+    员工删除的接口方法
+    delete from  emp where id = 17;
+    #{id}:直接将接口方法中传入的参数，使用预编译的方式，动态拼接到sql语句中，实现功能的动态化
+    ${id}:直接将参数拼接到sql中
+     */
+//    @Delete("delete from  emp where id = ${id};")
+//    public void delete(Integer id);
+    @Delete("delete from  emp where id = #{id};")
+    public int delete(Integer id);
 }
diff --git a/springboot-mybatis-crud/src/main/resources/application.properties b/springboot-mybatis-crud/src/main/resources/application.properties
index ced36a2..261bda0 100644
--- a/springboot-mybatis-crud/src/main/resources/application.properties
+++ b/springboot-mybatis-crud/src/main/resources/application.properties
@@ -12,3 +12,6 @@ spring.datasource.url=jdbc:mysql://localhost:3306/mybatis
 spring.datasource.username=root
 #连接数据库的密码
 spring.datasource.password=1234
+
+#输出mybatis的日志
+mybatis.configuration.log-impl=org.apache.ibatis.logging.stdout.StdOutImpl
\ No newline at end of file
diff --git a/springboot-mybatis-crud/src/test/java/com/inmind/SpringbootMybatisCrudApplicationTests.java b/springboot-mybatis-crud/src/test/java/com/inmind/SpringbootMybatisCrudApplicationTests.java
index f8cf9fe..42b37a1 100644
--- a/springboot-mybatis-crud/src/test/java/com/inmind/SpringbootMybatisCrudApplicationTests.java
+++ b/springboot-mybatis-crud/src/test/java/com/inmind/SpringbootMybatisCrudApplicationTests.java
@@ -1,13 +1,23 @@
 package com.inmind;
 
+import com.inmind.mapper.EmpMapper;
 import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 
 @SpringBootTest
 class SpringbootMybatisCrudApplicationTests {
+    @Autowired
+    private EmpMapper empMapper;
 
     @Test
     void contextLoads() {
     }
 
+    @Test
+    void testDelete(){
+        int count = empMapper.delete(15);
+        System.out.println(count);
+    };
+
 }