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application.properties

本門(mén)課程的框架

//主鍵ID
private?Integer?areaId;
//名稱(chēng)
private?String?areaName;
//權(quán)重，越大越排前顯示
private?Integer?priority;
//創(chuàng)建時(shí)間
private?Date?createTime;
//更新時(shí)間
private?Date?lastEditTime;

程序前后端調(diào)試

/*?pages/list/list.wxss?*/.container?{height:?100%;display:?table;align-items:?center;justify-content:?space-between;box-sizing:?border-box;padding-top:?10rpx;padding-bottom:?10rpx;text-align:?center;}.widget?{position:?relative;margin:?5rpx?10rpx;padding-left:?40rpx;padding-right:?40rpx;border:?1px?solid?#ddd;}.column?{width:?4rem;display:?table-cell;}.link-column?{width:?6rem;display:?table-cell;}.link?{color:?blue;display:?inline-table;}

CREATE?TABLE?`tb_area`?(
??`area_id`?int(2)?NOT?NULL?AUTO_INCREMENT,
??`area_name`?varchar(200)?NOT?NULL,
??`priority`?int(2)?NOT?NULL?DEFAULT?'0',
??`create_time`?datetime?DEFAULT?NULL,
??`last_edit_time`?timestamp?NULL?DEFAULT?CURRENT_TIMESTAMP?ON?UPDATE?CURRENT_TIMESTAMP,
??PRIMARY?KEY?(`area_id`),
??UNIQUE?KEY?`UK_AREA`?(`area_name`)
)?ENGINE=InnoDB?AUTO_INCREMENT=4?DEFAULT?CHARSET=utf8;

MyBatis中配置全局屬性：

1. 使用jdbc的getGeneratedKeys獲取數(shù)據(jù)自增主鍵值

   <setting name="useGeneratedKeys" value="true"/>

2. 使用列標(biāo)簽替換列名，默認(rèn)為true

   <setting name="useColumnLabel" value="true" />

3. 開(kāi)啟駝峰命名轉(zhuǎn)換：Table{create_time}->Entity{createTime}

????????<setting name="mapUnderScoreToCamelCase" value="true" />

????????

application.properties中配置：server.port=8082,可以設(shè)置端口號(hào)

會(huì)話工廠的創(chuàng)建

test test

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled

SpringBoot啟動(dòng)報(bào)錯(cuò),在啟動(dòng)類(lèi)中的@SpringBootApplication中加入

exclude?=?{DataSourceAutoConfiguration.class}

<update?id="updateArea"?parameterType="com.expr.applet7.entity.Area">
????update?tb_area
????<set>
????????<if?test="areaName?!=?null">area_name=#{areaName},</if>
????????<if?test="priority?!=?null">priority=#{priority},</if>
????????<if?test="lastEditTime?!=?null">last_edit_time=#{lastEditTime}</if>
????</set>
????<where>
????????area_id=#{areaId}
????</where>
</update>

在if標(biāo)簽中，如果不是最后一個(gè)字段，是要加逗號(hào)的，不然會(huì)報(bào)錯(cuò)。。

修改idea設(shè)置