整体项目结构
bean代码
package bean;
public class Apply {
private long id;
private String sname;
private String qq;
private long enterTime;
private String type;
private String school;
private long number;
private String repLink;
private String goal;
@Override
public String toString() {
return "Apply{" +
"id=" + id +
", sname='" + sname + '\'' +
", qq='" + qq + '\'' +
", enterTime=" + enterTime +
", type='" + type + '\'' +
", school='" + school + '\'' +
", number=" + number +
", repLink='" + repLink + '\'' +
", goal='" + goal + '\'' +
'}';
}
public Apply() {
}
public Apply(int id, String sname, String qq, long enterTime, String type, String school, long number, String repLink, String goal) {
this.id = id;
this.sname = sname;
this.qq = qq;
this.enterTime = enterTime;
this.type = type;
this.school = school;
this.number = number;
this.repLink = repLink;
this.goal = goal;
}
public Apply(String sname, String qq, long enterTime, String type, String school, long number, String repLink, String goal) {
this.sname = sname;
this.qq = qq;
this.enterTime = enterTime;
this.type = type;
this.school = school;
this.number = number;
this.repLink = repLink;
this.goal = goal;
}
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getSname() {
return sname;
}
public void setSname(String sname) {
this.sname = sname;
}
public String getQq() {
return qq;
}
public void setQq(String qq) {
this.qq = qq;
}
public long getEnterTime() {
return enterTime;
}
public void setEnterTime(long enterTime) {
this.enterTime = enterTime;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String getSchool() {
return school;
}
public void setSchool(String school) {
this.school = school;
}
public long getNumber() {
return number;
}
public void setNumber(long number) {
this.number = number;
}
public String getRepLink() {
return repLink;
}
public void setRepLink(String repLink) {
this.repLink = repLink;
}
public String getGoal() {
return goal;
}
public void setGoal(String goal) {
this.goal = goal;
}
}
bean映射文件 apply.xml
SELECT * FROM applytable WHERE id = #{value}
insert into applytable(id,sname, qq, entertime, `type`, school,`number`,replink,goal)
values (
null,
#{sname},
#{qq},
#{enterTime},
#{type},
#{school},
#{number},
#{repLink},
#{goal}
)
update applytable set sname = #{sname}, qq = #{qq},
entertime = #{enterTime}, `type` = #{type}, school = #{school},`number` = #{number}, replink = #{repLink}, goal = #{goal}
where id = #{id}
select * from applytable order by id desc
select count(*) from applytable
delete from applytable where id = #{id}
数据库属性文件 config.properties
jdbc.driver = com.mysql.jdbc.Driver
jdbc.url = jdbc:mysql://localhost:3306/xiuzhenyuan?characterEncoding=UTF-8
jdbc.username = root
jdbc.password = adminMyBatis 配置文件 mybatis-config.xml
单元测试代码 ApplyTest.java
package com.jms;
import bean.Apply;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.Test;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
public class ApplyTest {
public SqlSessionFactory getSqlSessionFactory() throws IOException {
// mybatis配置文件，这个地方的root地址为：resources，路径要对。
String resource = "mybatis-config.xml";
// 得到配置文件流
InputStream inputStream = Resources.getResourceAsStream(resource);
// 创建会话工厂，传入mybatis的配置文件信息
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
return sqlSessionFactory;
}
// 根据id查询用户信息，得到一条记录结果
@Test
public void getApply() throws IOException {
// 通过工厂得到SqlSession
SqlSession sqlSession = this.getSqlSessionFactory().openSession();
// 通过SqlSession操作数据库
// 第一个参数：映射文件中statement的id，等于=namespace+"."+statement的id
// 第二个参数：指定和映射文件中所匹配的parameterType类型的参数
// sqlSession.selectOne结果 是与映射文件中所匹配的resultType类型的对象
// selectOne查询出一条记录（这种很麻烦的！！！往后看看）
//这里的参数test.findUserById，test为命名空间，要与user.xml中的对应起来，
//同理，findUserById也要在user.xml中存在，不然都会报错
Apply apply = sqlSession.selectOne("test.getApply", 2);
// 释放资源
sqlSession.close();
}
@Test
public void addApply() throws IOException {
SqlSession sqlSession = this.getSqlSessionFactory().openSession();
sqlSession.insert("test.addApply", new Apply("Alice", "43523", 3452341, "Html", "SCHOOL", 4, "hgw3204", "DAY DAY UP"));
sqlSession.commit();
sqlSession.close();
}
@Test
public void updateApply() throws IOException {
SqlSession sqlSession = this.getSqlSessionFactory().openSession();
sqlSession.update("test.updateApply", new Apply(2, "Alice", "43523", 3452341, "Html", "SCHOOL", 4, "hgw3204", "DAY DAY UP"));
sqlSession.commit();
sqlSession.close();
}
@Test
public void getAll() throws IOException {
SqlSession sqlSession = this.getSqlSessionFactory().openSession();
final List selectList = sqlSession.selectList("test.getAllApply");
for (Apply apply :
selectList) {
System.out.println(apply);
}
sqlSession.close();
}
@Test
public void getTotal() throws IOException {
SqlSession sqlSession = this.getSqlSessionFactory().openSession();
final Integer total = (Integer) sqlSession.selectOne("test.getTotalApply");
System.out.println(total);
}
@Test
public void delete() throws IOException {
SqlSession sqlSession = this.getSqlSessionFactory().openSession();
sqlSession.delete("test.deleteApply", 20);
sqlSession.commit();
sqlSession.close();
}
}
单元测试结果
