Question

我想从POJO那里得到一个json。我只想在设置器上获取Json（为了设置对象的集合）。

我有一个公司类，其中包含一组员工。当我在公司对象上设置employee的集合时，我期望看到ObjectMapper生成的Json对象上的集合。但它没有用。

这里是我的代码和问题

@Entity
public class Company implements Serializable {

    //-------------------
    // PROPERTY
    //-------------------

    @ManyToMany
    @JsonIgnore
    @JoinTable(name = "COMPANY_EMPLOYEE",
               joinColumns = @JoinColumn(name="company_id", referencedColumnName="ID"),
               inverseJoinColumns = @JoinColumn(name="employees_id", referencedColumnName="ID"))
    private Set<Employee> employees = new HashSet<>();


    //-------------------
    // GETTER AND SETTER
    //-------------------

    @JsonIgnore
    public Set<Employee> getEmployees() {
        return employees;
    }

    @JsonProperty
    public void setEmployees(Set<Employee> employees) {
        this.employees = employees;
    }

}

//------ In Main Application

Company company = new Company();
        company.setName("Company");
        //etc....... company properties

Employee employee = new Employee();
         employee.setFirstName("FirstName");
        //etc....... employee properties

//Create the set of employee
Set<Employee> employeeSet = new HashSet<>();
              employeeSet.add(employee);

//Add the list/set of employee to the company      
company.setEmployees(employeeSet);

//Expect to have the employee set here but it's empty...
 ObjectMapper objectMapper = new ObjectMapper();
 System.out.println(new String(objectMapper.writeValueAsBytes(company)));

更新

我按照这篇文章解释了async mechanism of JsonIgnore with JsonProperty。（这正是我想要的）

提前致谢。

关于Setter的Spring @JsonProperty被忽略了

0 个答案: