MyBatis注解配置映射器：动态SQL的实现

package com.java1234.service; import java.util.HashMap; import java.util.List; import java.util.Map; import org.apache.ibatis.session.SqlSession; import org.apache.log4j.Logger; import org.junit.After; import org.junit.Before; import org.junit.Test; import com.java1234.mappers.StudentMapper; import com.java1234.model.Student; import com.java1234.util.SqlSessionFactoryUtil; public class StudentTest { private static Logger logger=Logger.getLogger(StudentTest.class); private SqlSession sqlSession=null; private StudentMapper studentMapper=null; //测试前调用 @Before public void setUp() throws Exception { sqlSession=SqlSessionFactoryUtil.openSession(); studentMapper=sqlSession.getMapper(StudentMapper.class); } //测试后调用 @After public void tearDown() throws Exception { sqlSession.close(); } @Test public void testInsert() { logger.info("添加学生"); Student student = new Student("琪琪", 11); studentMapper.insertStudent(student); sqlSession.commit(); } @Test public void testUpdate() { logger.info("更新学生"); Student student = new Student(6,"琪琪2", 12); studentMapper.updateStudent(student); sqlSession.commit(); } @Test public void testDelete() { logger.info("删除学生"); studentMapper.deleteStudent(6); sqlSession.commit(); } @Test public void testGetById() { logger.info("通过ID查找学生"); Student student = studentMapper.getStudentById(5); System.out.println(student.toString()); } @Test public void testFindStudents() { logger.info("查找所有学生"); Map<String, Object> paramap = new HashMap<String, Object>(); //paramap.put("name", "%张%"); //paramap.put("age", 12); List<Student> studentList = studentMapper.findStudents(paramap); for(Student student:studentList) System.out.println(student.toString()); } }