摘要：mybatis-plus讀取JSON類型。
本文總共三個(gè)步驟：
1、在數(shù)據(jù)庫表定義JSON字段；
2、在實(shí)體類加上@TableName(autoResultMap = true)、在JSON字段映射的屬性加上@TableField(typeHandler = FastjsonTypeHandler.class)；
3、建一些業(yè)務(wù)代碼進(jìn)行測試；
在數(shù)據(jù)庫表定義JSON字段
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CREATE TABLE `extra_info` ( `id` int(10) NOT NULL AUTO_INCREMENT PRIMARY KEY, `extra_object` json NULL, `extra_list` json NULL, `extra_array` json NULL);INSERT INTO `extra_info` VALUES (1, '{\"id\": 1, \"name\": \"2\"}', '[{\"id\": 1, \"name\": \"2\"}]', '[{\"id\": 1, \"name\": \"2\"}]'); |
在實(shí)體類加上@TableName(autoResultMap = true)、在JSON字段映射的屬性加上@TableField(typeHandler = FastjsonTypeHandler.class)
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import com.baomidou.mybatisplus.annotation.IdType;import com.baomidou.mybatisplus.annotation.TableField;import com.baomidou.mybatisplus.annotation.TableId;import com.baomidou.mybatisplus.annotation.TableName;import com.baomidou.mybatisplus.extension.handlers.FastjsonTypeHandler;import java.io.Serializable;import java.util.List;@TableName(autoResultMap = true)public class ExtraInfo implements Serializable { @TableId(type = IdType.AUTO) private Integer id; @TableField(typeHandler = FastjsonTypeHandler.class) private ExtraNode extraObject; @TableField(typeHandler = FastjsonTypeHandler.class) private List<ExtraNode> extraList; @TableField(typeHandler = FastjsonTypeHandler.class) private ExtraNode[] extraArray; public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public ExtraNode getExtraObject() { return extraObject; } public void setExtraObject(ExtraNode extraObject) { this.extraObject = extraObject; } public List<ExtraNode> getExtraList() { return extraList; } public void setExtraList(List<ExtraNode> extraList) { this.extraList = extraList; } public ExtraNode[] getExtraArray() { return extraArray; } public void setExtraArray(ExtraNode[] extraArray) { this.extraArray = extraArray; }} |
建一些業(yè)務(wù)代碼進(jìn)行測試
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import java.io.Serializable;public class ExtraNode implements Serializable { private Integer id; private String name; public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; }} |
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import com.baomidou.mybatisplus.core.mapper.BaseMapper;import org.springframework.stereotype.Repository;@Repositorypublic interface ExtraInfoMapper extends BaseMapper<ExtraInfo> {}import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;import java.util.List;@RestController@RequestMapping("/test")public class TestController { @Autowired private ExtraInfoMapper extraInfoMapper; @GetMapping public List<ExtraInfo> listAll() { return this.extraInfoMapper.selectList(new LambdaQueryWrapper<>()); }} |
運(yùn)行結(jié)果：
[
{
"id": 1,
"extraObject": { "id": 1, "name": "2" },
"extraList": [
{ "name": "2", "id": 1 }
],
"extraArray": [
{ "id": 1, "name": "2" }
]
}
]
到此這篇關(guān)于mybatis-plus讀取JSON類型的方法實(shí)現(xiàn)的文章就介紹到這了,更多相關(guān)mybatis-plus讀取JSON內(nèi)容請(qǐng)搜索服務(wù)器之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持服務(wù)器之家！
原文鏈接：https://www.cnblogs.com/liangweiping/p/12835377.html
