签名:但行好事,莫问前程。
文章目录
前言
记录一下List<对象>转JSON字符串以及JSON字符串转List<对象>
一、工作需求
产品需求中有一个需求要求页面布局以JSON保存
版本实体类:
java
public class SoftwareVersion extends SuperEntity {
private static final long serialVersionUID = 1L;
@Schema(description = "版本名称")
private String name;
@Schema(description = "版本描述")
private String description;
@Schema(description = "板块数量")
private Integer sectionNumber;
@Schema(description = "栏目数量")
private Integer columnNumber;
@Schema(description = "是否授权全部工具:0-否;1-是")
private Boolean toolAll;
@Schema(description = "仅限以下工具,以逗号分割工具主键ID")
private String toolOnly;
@Schema(description = "是否授权全部布局:0-否;1-是")
private Boolean layoutAll;
@Schema(description = "授权布局【以JSON格式保存】")
private String pageLayout;
@Schema(description = "员工数量")
private Integer employeesNumber;
@Schema(description = "管理员数量")
private Integer administratorNumber;
}
版本授权布局dto
java
@Data
@Schema(name = "VersionLayoutDto")
public class VersionLayoutDto {
// 布局名称
private String name;
// 布局类型
private Integer type;
// 布局数量
private Integer number;
// 布局是否可用
private Boolean able;
}
代码实现:
java
public class Demo {
public static void main(String[] args) {
List<VersionLayoutDto> versionLayoutDtoList = new ArrayList<>(4);
VersionLayoutDto versionLayoutDto1 = new VersionLayoutDto();
versionLayoutDto1.setName("轮播");
versionLayoutDto1.setType(1);
versionLayoutDto1.setNumber(6);
versionLayoutDto1.setAble(true);
VersionLayoutDto versionLayoutDto2 = new VersionLayoutDto();
versionLayoutDto2.setName("通栏");
versionLayoutDto2.setType(2);
versionLayoutDto2.setNumber(6);
versionLayoutDto2.setAble(true);
VersionLayoutDto versionLayoutDto3 = new VersionLayoutDto();
versionLayoutDto3.setName("两栏");
versionLayoutDto3.setType(3);
versionLayoutDto3.setNumber(6);
versionLayoutDto3.setAble(true);
VersionLayoutDto versionLayoutDto4 = new VersionLayoutDto();
versionLayoutDto4.setName("三栏");
versionLayoutDto4.setType(4);
versionLayoutDto4.setNumber(6);
versionLayoutDto4.setAble(true);
versionLayoutDtoList.add(versionLayoutDto1);
versionLayoutDtoList.add(versionLayoutDto2);
versionLayoutDtoList.add(versionLayoutDto3);
versionLayoutDtoList.add(versionLayoutDto4);
String jsonString = JSON.toJSONString(versionLayoutDtoList);
System.out.println("List<VersionLayoutDto> versionLayoutDtoList: 转换成json字符串");
System.out.println(jsonString);
System.out.println();
System.out.println("jsonString 转换成 List<VersionLayoutDto>");
List<VersionLayoutDto> list = JSONArray.parseArray(jsonString, VersionLayoutDto.class);
list.forEach(System.out::println);
}
}
运行结果:
二、List<对象>转JSON字符串
java
String jsonString = JSON.toJSONString(versionLayoutDtoList);
三、JSON字符串转List<对象>
java
List<VersionLayoutDto> list = JSONArray.parseArray(jsonString, VersionLayoutDto.class);
总结
博客主要记录了List<对象>转JSON字符串以及JSON字符串转List<对象>,有啥错误或不足地方请指正,如果对你有所帮助,请一键三连。