idea应用mybatis写增删改查
entity层
private Integer id;
private String userCode;
private String userName;
private String userPassword;
private Integer gender;
private Date birthday;
private String phone;
private String address;
private Integer userRole;
private Integer createdBy;
private Date creationDate;
private Integer modifyBy;
private Date modifyDate;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getUserCode() {
return userCode;
}
public void setUserCode(String userCode) {
this.userCode = userCode;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getUserPassword() {
return userPassword;
}
public void setUserPassword(String userPassword) {
this.userPassword = userPassword;
}
public Integer getGender() {
return gender;
}
public void setGender(Integer gender) {
this.gender = gender;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public Integer getUserRole() {
return userRole;
}
public void setUserRole(Integer userRole) {
this.userRole = userRole;
}
public Integer getCreatedBy() {
return createdBy;
}
public void setCreatedBy(Integer createdBy) {
this.createdBy = createdBy;
}
public Date getCreationDate() {
return creationDate;
}
public void setCreationDate(Date creationDate) {
this.creationDate = creationDate;
}
public Integer getModifyBy() {
return modifyBy;
}
public void setModifyBy(Integer modifyBy) {
this.modifyBy = modifyBy;
}
public Date getModifyDate() {
return modifyDate;
}
public void setModifyDate(Date modifyDate) {
this.modifyDate = modifyDate;
}
Dao层
IUserDao：（Interface）
//查询
public List<User> getAllUser();
//新增
void addUser(User user);
//删除
void delUser(int id);
//修改
void modifyUser(User user);
//新增时获得主键
void addUserKey(User user);
//模糊查询
public List<User> getAllUsers();
IUserDao：（xml）
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<!--namespace需要指向接口全路径-->
<mapper namespace="com.qzy.dao.IUserDao">
<!--id代表当前命名空间下（接口下）的唯一方法名 resultType代表返回值类型-->
<select resultType="User" id="getAllUser">
select * from smbms_user
</select>
<insert parameterType="User" id="addUser">
insert into smbms_user values (DEFAULT,#{userCode},#{userName},#{userPassword},#{gender},#{birthday},#{phone},#{address},#{userRole},#{createdBy},#{creationDate},#{modifyBy},#{modifyDate})
</insert>
<insert id="addUserKey" parameterType="com.qzy.entity.User" useGeneratedKeys="true" keyProperty="id">
insert into smbms_user values (DEFAULT,#{userCode},#{userName},#{userPassword},#{gender},#{birthday},#{phone},#{address},#{userRole},#{createdBy},#{creationDate},#{modifyBy},#{modifyDate})
</insert>
<delete id="delUser">
delete from smbms_user where id=#{xxx}
</delete>
<update id="modifyUser" parameterType="User">
update smbms_user set userName=#{userName} where id=#{id}
</update>
<select id="getAllUsers" resultType="User">
select * from smbms_user where userName like '%${value}%';
</select>
</mapper>
resources层
mybatis-config.（xml)
<?xml version="1.0" encoding="UTF-8" ?>
省略......
<typeAliases>
<!--单个设置别名-->
<!-- <typeAlias type="com.qzy.entity.User" alias="User"/>-->
<!--全局设置别名-->
<package name="com.qzy.entity"/>
</typeAliases>
<!--log4j配置文件的读取（可以不写）-->
<settings>
<setting name="logImpl" value="LOG4J"/>
</settings>
省略......
</configuration>
tset层
tset（class）
private static Logger log = Logger.getLogger(Test.class.getClass());
SqlSession sqlSession;
@Before
public void before() throws IOException {
//System.out.println("执行之前========================");
log.info("执行之前========================");
//步骤一：读取大配置文件
String source="mybatis-config.xml";
InputStream is = Resources.getResourceAsStream(source);
//步骤二：创建工厂
SqlSessionFactory factory=new SqlSessionFactoryBuilder().build(is);
//步骤三：创建SqlSession核心对象
sqlSession = factory.openSession();
}
@Test
public void selectAllTest() throws IOException {
//步骤四：查
List<User> getAllUser = sqlSession.selectList("getAllUser");
for (User user:getAllUser) {
//System.out.println(user.getUserName());
log.info(user.getUserName());
}
}
//模糊
@Test
public void getAllUsers() throws IOException{
List<User> userList=sqlSession.selectList("com.qzy.dao.IUserDao.getAllUsers","孙");
for (User u:userList){
///System.out.println(u.getUserName());
log.info(u.getUserName());
}
}
//增
@Test
public void addUser() throws IOException{
User user =new User();
user.setUserCode("hehe");
user.setUserName("牛皮呀");
user.setUserPassword("123123");
user.setGender(2);
user.setBirthday(new Date());
user.setPhone("13215689594");
user.setAddress("北京市海淀区五道口北大青鸟");
user.setUserRole(2);
user.setCreatedBy(1);
user.setCreationDate(new Date());
user.setModifyBy(null);
user.setModifyDate(null);
sqlSession.insert("com.qzy.dao.IUserDao.addUser",user);
sqlSession.commit();
//查看是否会返回自增的主键
//System.out.println(user.getId());
log.info(user.getId());
}
//删
@Test
public void delUser() throws IOException{
sqlSession.delete("com.qzy.dao.IUserDao.delUser","17");
sqlSession.commit();
sqlSession.close();
//System.out.println("删除成功！");
log.info("删除成功！");
}
//改
@Test
public void modifyUser() throws IOException{
User user=new User();
user.setUserName("安其拉");
user.setId(16);
sqlSession.update("com.qzy.dao.IUserDao.modifyUser",user);
sqlSession.commit();
sqlSession.close();
//System.out.println("更改成功！");
log.info("更改成功！");
}
@After
public void after(){
//System.out.println("执行之后====================================");
log.info("执行之后========================");
//最后关闭sqlSession释放资源
sqlSession.close();
}
log4j.(properties)
### direct log messages to stdout ###
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
### direct messages to file mylog.log ###
log4j.appender.file=org.apache.log4j.FileAppender
###日志文件的了路径###
log4j.appender.file.File=G:\\mylog.log
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
### set log levels - for more verbose logging change 'info' to 'debug' ###
###log4j.rootLogger=debug, stdout,file
log4j.logger.com.qzy.dao=debug, stdout,file