mysql如何儲存JSON型別資料實戰

阿新 • • 發佈：2021-02-05

技術標籤：筆記

經理:我有個欄位是JSON型別的，你把我前臺傳過去的JSON存進去！
小編: 好沒問題上程式碼

實體類及對映Vo 專案的查詢，返回，新增，編輯均使用Vo當入參，回參

@Data
@EqualsAndHashCode(callSuper = false)
@Accessors(chain = true)
@TableName("test")
public class Test implements Serializable {

    private static final long serialVersionUID = 1L;

    //ID 

    @TableId("ID")
    private String id;

    //AAA
    @TableField("AAA")
    private String aaa;
}

@Data
public class TestSQLVo {

    private static final long serialVersionUID = 1L;

    //ID
    private String id;
	
	//AAA
    private String aaa;
}

@Data
public class TestAddVo 
 {

    private static final long serialVersionUID = 1L;
	
	//AAA
	@NotEmpty(message = "AAA不能為空")
    private String aaa;
}

@Data
public class TestEditVo {

    private static final long serialVersionUID = 1L;

    //ID
	@NotEmpty(message = "ID不能為空")
    private String id;
	
	//AAA
    private 
 String aaa;
}

@Data
public class TestQueryLVo {

    private static final long serialVersionUID = 1L;

    //ID
    private String id;
}

@Data
public class TestResultVo {

    private static final long serialVersionUID = 1L;

    //ID
    private String id;
	
	//AAA
    private String aaa;
}

Controller層

     //用途說明: 根據主鍵查詢列表資料資訊
    @PostMapping("queryTestById")
    public AjaxResult queryTestById(@RequestBody TestQueryVo params) {
        try {
            TestResultVo page = iTestApplication.queryTestById(params);
            return getObject(page);
        } catch (Exception e) {
            e.printStackTrace();
            return error(e.getMessage());
        }
    }

    //用途說明: 新增資訊
    @PostMapping("addTest")
    public AjaxResult addTest(@RequestBody @Validated TestAddVo params) {
        try {
            boolean flag = false;
            flag = iTestApplication.addTest(params);
            if (flag) {
                return success();
            } else {
                return error("儲存資訊失敗!");
            }
        } catch (Exception e){
            e.printStackTrace();
            return  error(e.getMessage());
        }
    }

     //用途說明: 編輯資訊
    @PostMapping("updateTest")
    public AjaxResult updateTest(@RequestBody @Validated TestEditVo params) {
        try {
            boolean flag = false;
            flag = iTestApplication.updateTest(params);
            if (flag) {
                return success();
            } else {
                return error("儲存資訊失敗!");
            }
        } catch (Exception e){
            e.printStackTrace();
            return  error(e.getMessage());
        }
    }

service介面省略，service實現類

    //用途說明: 根據主鍵查詢列表資料資訊
    @Override
    public TestResultVo queryTestById(TestQueryVo params) {
        //查詢資料
        TestResultVo resultVo = TestMapper.queryInfo(params);
        return resultVo;
    }

    //用途說明: 新增資訊
    @Override
    public boolean addTest(TestAddVo params) throws Exception {
        //欄位aaa JSON轉String
        String aaa = "";
        if(params.getAaa() != null){
            aaa = params.getAaa().toString();
        }
        TestSQLVo testSQLVo = new TestSQLVo();
        BeanUtils.copyProperties(params,testSQLVo);
        //自動生成主鍵
        testSQLVo.setId(IDHelper.uuid());
        return TestMapper.insert(testSQLVo);
    }

    //用途說明: 編輯資訊
    @Override
    public boolean updateTest(TestEditVo params) throws Exception {
        //欄位aaa JSON轉String
        String aaa = "";
        if(params.getAaa() != null){
            aaa = params.getAaa().toString();
        }
        TestSQLVo testSQLVo = new TestSQLVo();
        BeanUtils.copyProperties(params,testSQLVo);
        return TestMapper.update(testSQLVo);
    }

mapper

    TestResultVo queryInfo(@Param("TestQueryVo") TestQueryVo params);

    boolean insert(@Param("TestSQLVo") TestAddSQLVo params);

    boolean update(@Param("TestSQLVo") TestSQLVo params);

xml

<!--新增資訊-->
    <insert id="insert" parameterType="TestSQLVo">
        INSERT INTO Test
        (ID,AAA)
        VALUES
        (#{TestSQLVo.id,jdbcType=VARCHAR},#{TestSQLVo.aaa,jdbcType=VARCHAR})
    </insert>

    <!--編輯資訊-->
    <update id="update" parameterType="TestSQLVo">
        UPDATE Test
        SET
            AAA = #{TestSQLVo.aaa,jdbcType=VARCHAR}
        WHERE
            ID = #{TestSQLVo.id,jdbcType=VARCHAR}
    </update>

    <!--根據主鍵查詢列表資料資訊-->
    <select id="queryInfo" parameterType="TestQueryVo" resultType="TestResultVo">
        SELECT
            ID,
            AAA
        FROM
            test 
        <!--指標明細評分ID-->
        <if test="TestQueryVo.aaa != '' and TestQueryVo.aaa != null">
            AND AAA = #{TestQueryVo.aaa,jdbcType=VARCHAR}
        </if>
    </select>

成功插入截圖

新增，編輯入參，根據id查詢返回結果展示
新增
{
“aaa”: {“one”: 1,“two”: 2,“three”: 3}
}
編輯
{
“aaa”: {“one”: 1,“two”: 2,“three”: 3},
“id”: “c4b03fbefecf425db1c6e357903423a8”
}
查詢返回格式
{
“msg”: “操作成功”,
“code”: “0”,
“data”: {
“id”: “c4b03fbefecf425db1c6e357903423a8”,
“aaa”: “{“one”: 1, “two”: 2, “three”: 3}”
}
}