返回生活须知全部帖子接口

backend/src/main/java/com/nav/NavApplication.java

@@ -3,6 +3,13 @@ package com.nav;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 
+/**
+ * 类说明
+ * 程序入口
+ * @author zyx
+ * @date 2022/4/28 15:14
+ */
+
 @SpringBootApplication
 public class NavApplication {
 

backend/src/main/java/com/nav/controller/PostController.java

+package com.nav.controller;
+
+import com.nav.pojo.Post;
+import com.nav.service.PostService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+/**
+ * 类说明
+ * post的controller层
+ * @author zyx
+ * @date 2022/4/28 20:43
+ */
+@RestController
+public class PostController {
+    @Autowired
+    PostService postService;
+
+    @GetMapping("/lifePost")
+    public List<Post> getLifePostList(){
+        return postService.getLifePostList();
+    }
+}

backend/src/main/java/com/nav/dao/PostDao.java

+package com.nav.dao;
+
+import com.nav.pojo.Post;
+import org.apache.ibatis.annotations.Mapper;
+
+import java.util.List;
+
+/**
+ * 类说明
+ * post的dao类
+ * @author zyx
+ * @date 2022/4/28 20:30
+ */
+@Mapper
+public interface PostDao {
+
+    /**
+     * 方法说明：查询所有生活须知文章
+     * @author zyx
+     * @date 2022/4/28 20:32
+     * @param
+     * @return:java.util.List<com.nav.pojo.Post>
+    **/
+    public List<Post> selectLifePostList();
+}

backend/src/main/java/com/nav/service/PostService.java

+package com.nav.service;
+
+import com.nav.pojo.Post;
+
+import java.util.List;
+
+/**
+ * 类说明
+ * post的service接口
+ * @author zyx
+ * @date 2022/4/28 20:40
+ */
+public interface PostService {
+
+    /**
+     * 方法说明：查询所有生活须知文章
+     * @author zyx
+     * @date 2022/4/28 20:40
+     * @param
+     * @return:java.util.List<com.nav.pojo.Post>
+    **/
+    public List<Post> getLifePostList();
+}

backend/src/main/java/com/nav/service/PostServiceImpl.java

+package com.nav.service;
+
+import com.nav.dao.PostDao;
+import com.nav.pojo.Post;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+/**
+ * 类说明
+ *
+ * @author zyx
+ * @date 2022/4/28 20:41
+ */
+@Service
+public class PostServiceImpl implements PostService{
+    @Autowired
+    PostDao postDao;
+
+    @Override
+    public List<Post> getLifePostList() {
+        return postDao.selectLifePostList();
+    }
+}

backend/src/main/resources/mapper/PostMapper.xml

+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE mapper
+        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
+        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.nav.dao.PostDao">
+    <select id="selectLifePostList" resultType="com.nav.pojo.Post">
+        select *
+        from post
+        where topic_type = 1;
+    </select>
+
+</mapper>
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