您可以使用Spring的规范API，它是JPA标准API的包装。确保您的存储库从JpaSpecificationExecutor<JobEntity>

规范示例为：

public class JobEntitySpecifications {
    public static Specification<JobEntity> withProject(Project project) {
        if (project == null) {
            return null;
        } else {
            return (root, query, cb) -> cb.equal(root.get("project"), project);
        }
    }

    public static Specification<JobEntity> withJobType() { ... }
    public static Specification<JobEntity> withJobStatus() { ... }
    public static Specification<JobEntity> withCreateTime() { ... }
}

确保null在没有给出项目代码/职位类型/ …的情况下返回，以便在查询中将其忽略。

现在您可以使用：

repository.findAll(Specifications.where(JobEntitySpecifications.withJobType(jobType))
    .and(JobEntitySpecifications.withJobStatus(jobStatus))
    .and(JobEntitySpecifications.withProject(project))
    .and(JobEntitySpecifications.withCreateTime(createTime)));

如果在此处使用静态导入，则可以使其看起来更好。