教务管理系统（spring mvc，spring，mybatis框架）

package com.system.po; import java.util.ArrayList; import java.util.List; public class CourseExample { protected String orderByClause; protected boolean distinct; protected List<Criteria> oredCriteria; public CourseExample() { oredCriteria = new ArrayList<Criteria>(); } public void setOrderByClause(String orderByClause) { this.orderByClause = orderByClause; } public String getOrderByClause() { return orderByClause; } public void setDistinct(boolean distinct) { this.distinct = distinct; } public boolean isDistinct() { return distinct; } public List<Criteria> getOredCriteria() { return oredCriteria; } public void or(Criteria criteria) { oredCriteria.add(criteria); } public Criteria or() { Criteria criteria = createCriteriaInternal(); oredCriteria.add(criteria); return criteria; } public Criteria createCriteria() { Criteria criteria = createCriteriaInternal(); if (oredCriteria.size() == 0) { oredCriteria.add(criteria); } return criteria; } protected Criteria createCriteriaInternal() { Criteria criteria = new Criteria(); return criteria; } public void clear() { oredCriteria.clear(); orderByClause = null; distinct = false; } protected abstract static class GeneratedCriteria { protected List<Criterion> criteria; protected GeneratedCriteria() { super(); criteria = new ArrayList<Criterion>(); } public boolean isValid() { return criteria.size() > 0; } public List<Criterion> getAllCriteria() { return criteria; } public List<Criterion> getCriteria() { return criteria; } protected void addCriterion(String condition) { if (condition == null) { throw new RuntimeException("Value for condition cannot be null"); } criteria.add(new Criterion(condition)); } protected void addCriterion(String condition, Object value, String property) { if (value == null) { throw new RuntimeException("Value for " + property + " cannot be null"); } criteria.add(new Criterion(condition, value)); } protected void addCriterion(String condition, Object value1, Object value2, String property) { if (value1 == null || value2 == null) { throw new RuntimeException("Between values for " + property + " cannot be null"); } criteria.add(new Criterion(condition, value1, value2)); } public Criteria andCourseidIsNull() { addCriterion("courseID is null"); return (Criteria) this; } public Criteria andCourseidIsNotNull() { addCriterion("courseID is not null"); return (Criteria) this; } public Criteria andCourseidEqualTo(Integer value) { addCriterion("courseID =", value, "courseid"); return (Criteria) this; } public Criteria andCourseidNotEqualTo(Integer value) { addCriterion("courseID <>", value, "courseid"); return (Criteria) this; } public Criteria andCourseidGreaterThan(Integer value) { addCriterion("courseID >", value, "courseid"); return (Criteria) this; } public Criteria andCourseidGreaterThanOrEqualTo(Integer value) { addCriterion("courseID >=", value, "courseid"); return (Criteria) this; } public Criteria andCourseidLessThan(Integer value) { addCriterion("courseID <", value, "courseid"); return (Criteria) this; } public Criteria andCourseidLessThanOrEqualTo(Integer value) { addCriterion("courseID <=", value, "courseid"); return (Criteria) this; } public Criteria andCourseidIn(List<Integer> values) { addCriterion("courseID in", values, "courseid"); return (Criteria) this; } public Criteria andCourseidNotIn(List<Integer> values) { addCriterion("courseID not in", values, "courseid"); return (Criteria) this; } public Criteria andCourseidBetween(Integer value1, Integer value2) { addCriterion("courseID between", value1, value2, "courseid"); return (Criteria) this; } public Criteria andCourseidNotBetween(Integer value1, Integer value2) { addCriterion("courseID not between", value1, value2, "courseid"); return (Criteria) this; } public Criteria andCoursenameIsNull() { addCriterion("courseName is null"); return (Criteria) this; } public Criteria andCoursenameIsNotNull() { addCriterion("courseName is not null"); return (Criteria) this; } public Criteria andCoursenameEqualTo(String value) { addCriterion("courseName =", value, "coursename"); return (Criteria) this; } public Criteria andCoursenameNotEqualTo(String value) { addCriterion("courseName <>", value, "coursename"); return (Criteria) this; } public Criteria andCoursenameGreaterThan(String value) { addCriterion("courseName >", value, "coursename"); return (Criteria) this; } public Criteria andCoursenameGreaterThanOrEqualTo(String value) { addCriterion("courseName >=", value, "coursename"); return (Criteria) this; } public Criteria andCoursenameLessThan(String value) { addCriterion("courseName <", value, "coursename"); return (Criteria) this; } public Criteria andCoursenameLessThanOrEqualTo(String value) { addCriterion("courseName <=", value, "coursename"); return (Criteria) this; } public Criteria andCoursenameLike(String value) { addCriterion("courseName like", value, "coursename"); return (Criteria) this; } public Criteria andCoursenameNotLike(String value) { addCriterion("courseName not like", value, "coursename"); return (Criteria) this; } public Criteria andCoursenameIn(List<String> values) { addCriterion("courseName in", values, "coursename"); return (Criteria) this; } public Criteria andCoursenameNotIn(List<String> values) { addCriterion("courseName not in", values, "coursename"); return (Criteria) this; } public Criteria andCoursenameBetween(String value1, String value2) { addCriterion("courseName between", value1, value2, "coursename"); return (Criteria) this; } public Criteria andCoursenameNotBetween(String value1, String value2) { addCriterion("courseName not between", value1, value2, "coursename"); return (Criteria) this; } public Criteria andTeacheridIsNull() { addCriterion("teacherID is null"); return (Criteria) this; } public Criteria andTeacheridIsNotNull() { addCriterion("teacherID is not null"); return (Criteria) this; } public Criteria andTeacheridEqualTo(Integer value) { addCriterion("teacherID =", value, "teacherid"); return (Criteria) this; } public Criteria andTeacheridNotEqualTo(Integer value) { addCriterion("teacherID <>", value, "teacherid"); return (Criteria) this; } public Criteria andTeacheridGre