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.gitignore

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+HELP.md
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/

pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>com.example</groupId>
+    <artifactId>demo</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>demo</name>
+    <description>Demo project for Spring Boot</description>
+    <properties>
+        <java.version>1.8</java.version>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+        <spring-boot.version>2.6.13</spring-boot.version>
+    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+
+        <!-- Mysql Connector -->
+        <dependency>
+            <groupId>mysql</groupId>
+            <artifactId>mysql-connector-java</artifactId>
+            <version>8.0.32</version>
+        </dependency>
+        <!-- Mybatis 依赖配置 -->
+        <dependency>
+            <groupId>org.mybatis.spring.boot</groupId>
+            <artifactId>mybatis-spring-boot-starter</artifactId>
+            <version>2.2.2</version>
+        </dependency>
+
+
+    </dependencies>
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-dependencies</artifactId>
+                <version>${spring-boot.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.8.1</version>
+                <configuration>
+                    <source>1.8</source>
+                    <target>1.8</target>
+                    <encoding>UTF-8</encoding>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+                <version>${spring-boot.version}</version>
+                <configuration>
+                    <mainClass>com.example.demo.DemoApplication</mainClass>
+                    <skip>true</skip>
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>repackage</id>
+                        <goals>
+                            <goal>repackage</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

src/main/java/com/example/demo/DemoApplication.java

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+package com.example.demo;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class DemoApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(DemoApplication.class, args);
+    }
+
+}

src/main/java/com/example/demo/controller/PlController.java

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+package com.example.demo.controller;
+
+import com.example.demo.domain.Pl;
+import com.example.demo.service.PlServiec;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+@RestController
+@RequestMapping
+public class PlController {
+    @Autowired
+    private PlServiec plServiec;
+
+    @PostMapping("list")
+    public List<Pl> findList(){
+        return plServiec.findList();
+    }
+
+}

src/main/java/com/example/demo/domain/Pl.java

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+package com.example.demo.domain;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.util.Date;
+
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class Pl {
+    private Integer id;
+    private String title;
+    private String text;
+    private Date time;
+}

src/main/java/com/example/demo/mapper/PlMapper.java

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+package com.example.demo.mapper;
+
+import com.example.demo.domain.Pl;
+import org.apache.ibatis.annotations.Mapper;
+
+import java.util.List;
+
+@Mapper
+public interface PlMapper {
+    List<Pl> findList();
+}

src/main/java/com/example/demo/service/PlServiec.java

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+package com.example.demo.service;
+
+import com.example.demo.domain.Pl;
+
+import java.util.List;
+
+public interface PlServiec {
+    List<Pl> findList();
+}

src/main/java/com/example/demo/service/impl/PlServiecImpl.java

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+package com.example.demo.service.impl;
+
+import com.example.demo.domain.Pl;
+import com.example.demo.mapper.PlMapper;
+import com.example.demo.service.PlServiec;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class PlServiecImpl implements PlServiec {
+    @Autowired
+    private PlMapper plMapper;
+
+    @Override
+    public List<Pl> findList() {
+        return plMapper.findList();
+    }
+}

src/main/resources/application.yml

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+server:
+  port: 8080
+spring:
+  redis:
+    host: 139.224.34.9
+    port: 6379
+    password: cyx12345
+  datasource:
+    driver-class-name: com.mysql.cj.jdbc.Driver
+    url: jdbc:mysql://139.224.34.9:3306/day14rk?useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&useSSL=true&serverTimezone=GMT%2B8
+    username: root
+    password: cyx12345
+
+# mybatis配置
+mybatis:
+  # 搜索指定包别名
+  typeAliasesPackage: com.example.demo.domain
+  # 配置mapper的扫描，找到所有的mapper.xml映射文件
+  mapperLocations: classpath:mapper/**/*.xml
+  configuration:
+    map-underscore-to-camel-case: true
+# 将mapper接口所在包的日志级别改成debug，可以在控制台打印sql
+logging:
+  level:
+    com.bwie.**: debug
+
+

src/main/resources/mapper/PlMapper.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper
+        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.example.demo.mapper.PlMapper">
+
+    <select id="findList" resultType="com.example.demo.domain.Pl">
+        select *
+        from t_pl
+        order by time desc
+    </select>
+</mapper>

src/test/java/com/example/demo/DemoApplicationTests.java

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+package com.example.demo;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class DemoApplicationTests {
+
+    @Test
+    void contextLoads() {
+    }
+
+}