MyBatis一对多collection用法

た入场券 2023-06-19 14:29 3阅读 0赞

形如下面的一个类

package com.example.demo;
    
    
    import java.util.List;
    
    public class ClassDemo {
    
        private Long classId;
        private String className;
    
        private List<Student> studentList;
    
        public Long getClassId() {
            return classId;
        }
    
        public void setClassId(Long classId) {
            this.classId = classId;
        }
    
        public String getClassName() {
            return className;
        }
    
        public void setClassName(String className) {
            this.className = className;
        }
    
        public List<Student> getStudentList() {
            return studentList;
        }
    
        public void setStudentList(List<Student> studentList) {
            this.studentList = studentList;
        }
    }

里面有个student类。

package com.example.demo;
    
    public class Student {
        private Long classId;
        private Long studentId;
        private String studentName;
    
        public Long getClassId() {
            return classId;
        }
    
        public void setClassId(Long classId) {
            this.classId = classId;
        }
    
        public Long getStudentId() {
            return studentId;
        }
    
        public void setStudentId(Long studentId) {
            this.studentId = studentId;
        }
    
        public String getStudentName() {
            return studentName;
        }
    
        public void setStudentName(String studentName) {
            this.studentName = studentName;
        }
    }

使用mybatis的一对多collection方法就能轻易的解决这个问题。