6.28 汇率

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

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+package com.example.demo.controller;
+
+
+import com.example.demo.domain.entity.Rate;
+import com.example.demo.domain.vo.Page;
+import com.example.demo.domain.vo.Result;
+import com.example.demo.mapper.RateMapper;
+import com.example.demo.service.RateService;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.util.ObjectUtils;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.Map;
+
+
+@RestController
+@RequestMapping("/rate")
+@RequiredArgsConstructor
+@Slf4j
+@CrossOrigin
+public class RateController {
+
+    @Autowired
+    private RateService rateService;
+
+    //货币汇率列表
+    @PostMapping("/selectAll")
+    public Result selectAll(@RequestBody Page page){
+        if (ObjectUtils.isEmpty(page.getPageNum())) {
+            return Result.error("页码数为空！");
+        }
+        if (ObjectUtils.isEmpty(page.getPageSize())) {
+            return Result.error("页大小为空！");
+        } else {
+            return Result.success(rateService.selectAll(page.getPageNum(), page.getPageSize()));
+        }
+    }
+
+    //添加
+    @PostMapping("/add")
+    public Result add(@RequestBody Rate rate){
+        rateService.add(rate);
+        return Result.success("添加成功");
+
+    }
+
+    @PostMapping("/selectById")
+    public Result selectById(@RequestBody Map<String, Object> requestBody){
+        Integer id = (Integer) requestBody.get("id");
+        Rate rate =rateService.selectById(id);
+        return Result.success(rate);
+    }
+
+    //编辑
+    @PostMapping("/update")
+    public Result update(@RequestBody Rate rate){
+        rateService.update(rate);
+        return Result.success("编辑成功");
+    }
+
+
+
+
+
+
+}

src/main/java/com/example/demo/domain/vo/RateDetail.java

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+package com.example.demo.domain.vo;
+
+import com.fasterxml.jackson.annotation.JsonFormat;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.math.BigDecimal;
+import java.util.Date;
+
+    @Data
+    @NoArgsConstructor
+    public class RateDetail {
+        private static final long serialVersionUID = 1L;
+
+
+        private Integer id;
+        private String rateName;
+        private BigDecimal num = BigDecimal.ZERO;;
+        private Integer adminId;//提交人
+        @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "Asia/Shanghai")
+        private Date createTime; // 创建时间
+        @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "Asia/Shanghai")
+        private Date updateTime; // 更新时间
+        @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "Asia/Shanghai")
+        private Date lastTime; // 最晚时间
+
+
+    }
+
+

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

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+package com.example.demo.mapper;
+
+import com.example.demo.domain.entity.Rate;
+import com.example.demo.domain.vo.RateDetail;
+import org.apache.ibatis.annotations.Mapper;
+
+import java.util.List;
+@Mapper
+public interface RateMapper {
+    List<Rate> selectAll();
+
+    Rate selectById(Integer id);
+
+    void add(Rate rate);
+
+    void update(Rate rate);
+
+}

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

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+package com.example.demo.service;
+
+import com.example.demo.domain.entity.Rate;
+import com.example.demo.domain.vo.RateDetail;
+import com.github.pagehelper.PageInfo;
+
+public interface RateService {
+
+    PageInfo<Rate> selectAll(Integer pageNum, Integer pageSize);
+
+    Rate selectById(Integer id);
+
+    void add(Rate rate);
+
+    void update(Rate rate);
+}

src/main/java/com/example/demo/serviceImpl/RateServiceImpl.java

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+package com.example.demo.serviceImpl;
+
+import com.example.demo.domain.entity.Rate;
+import com.example.demo.domain.vo.ConsumeUser;
+import com.example.demo.domain.vo.RateDetail;
+import com.example.demo.mapper.RateMapper;
+import com.example.demo.service.RateService;
+import com.github.pagehelper.PageHelper;
+import com.github.pagehelper.PageInfo;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+
+@Service
+public class RateServiceImpl implements RateService {
+    @Autowired
+    private RateMapper rateMapper;
+
+
+    @Override
+    public PageInfo<Rate> selectAll(Integer pageNum, Integer pageSize) {
+        PageHelper.startPage(pageNum, pageSize);
+        List<Rate> rates = rateMapper.selectAll();
+        return new PageInfo<>(rates);
+    }
+
+    @Override
+    public Rate selectById(Integer id) {
+        return rateMapper.selectById(id);
+    }
+
+    @Override
+    public void add(Rate rate) {
+        rateMapper.add(rate);
+    }
+
+    @Override
+    public void update(Rate rate) {
+        rateMapper.update(rate);
+    }
+}

src/main/resources/mapper/RateMapper.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.RateMapper">
+    <select id="selectAll" resultType="com.example.demo.domain.vo.RateDetail">
+        SELECT
+            *,
+            CASE
+                WHEN update_time IS NULL OR create_time > update_time THEN create_time
+                ELSE update_time
+                END AS last_time
+        FROM rate
+    </select>
+
+    <select id="selectById" resultType="com.example.demo.domain.entity.Rate">
+        SELECT * FROM rate WHERE id= #{id}
+    </select>
+
+
+    <update id="update">
+        UPDATE
+            rate
+        SET
+            rate_name=#{rateName},
+            num=#{num},
+            admin_id=#{adminId},
+            update_time=#{updateTime}
+        WHERE
+            id=#{id}
+    </update>
+
+
+    <insert id="add">
+        INSERT INTO rate
+        (rate_name, num, admin_id, create_time)
+        VALUES
+        (#{rateName}, #{num}, #{adminId}, #{createTime})
+        <selectKey keyProperty="id" resultType="java.lang.Integer" order="AFTER">
+            SELECT LAST_INSERT_ID()
+        </selectKey>
+    </insert>
+
+</mapper>