MyBatis-Plus 基础+进阶+实战 之 自定义类型处理器

/**
 * <p>
 * 
 * </p>
 *autoResultMap = true 
 * @author 乐哥聊编程
 * @since 2022-07-18
 */
@TableName(value = "manage_user",autoResultMap = true)

 @TableField(typeHandler = JacksonTypeHandler.class)
    private Permission permission;

    @Test
    public void testSave() {
        Permission permission = Permission.builder()
                .url("/api/user/add")
                .method("get")
                .name("新增用户")
                .build();
        ManageUser manageUser = ManageUser.builder()
                .userName("乐哥1000008")
                .delFlag(false)
                .email("110120119@qq.com")
                .nickName("乐哥聊编程")
                .mobile("13098987766")
                .permission(permission)
                .build();
        manageUserServiceImpl.save(manageUser);
    }

package com.lglbc.mybatispluslearning.configuration;

import com.baomidou.mybatisplus.extension.handlers.JacksonTypeHandler;
import com.fasterxml.jackson.core.type.TypeReference;
import com.lglbc.mybatispluslearning.entity.Permission;

import java.io.IOException;
import java.util.List;

public class    MyListTypeHandler extends JacksonTypeHandler {
    private Class<?> type=null;
    public MyListTypeHandler(Class<?> type) {
        super(type);
        this.type=type;
    }

    @Override
    protected Object parse(String json) {
        try {
            return getObjectMapper().readValue(json, new TypeReference<List<Permission>>() {
            });
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }
}

    @TableField(typeHandler = MyListTypeHandler.class)
    private List<Permission> permission;

@TableName(value = "manage_user", autoResultMap = true)
@Builder
@AllArgsConstructor
@NoArgsConstructor
public class ManageUser implements Serializable {

    @Test
    public void testSave() {
        Permission permission = Permission.builder()
                .url("/api/user/add")
                .method("get")
                .name("新增用户")
                .build();
        ManageUser manageUser = ManageUser.builder()
                .userName("乐哥1000009")
                .delFlag(false)
                .email("110120119@qq.com")
                .nickName("乐哥聊编程")
                .mobile("111111")
                .permission(Arrays.asList(permission))
                .build();
        manageUserServiceImpl.save(manageUser);
    }