簡單快速的用SpringBoot整合myBatis（註解+xml）
跟著上一篇的節奏我們繼續，SpringBoot整合myBatis的兩種方式：1）註解，2）xml。
首先，我們先來看第一種方式:註解…….
第一步，先引入Springboot整合mybatis,JDBC,mysql的Jar檔案..
<!--mybatis-->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId spring.datasource.url=jdbc:mysql://localhost:3306/test?autoReconnect=true&useUnicode=true&characterEncoding=utf-8
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
第三步，新建StudentEntity實體類 ，StudentDao介面...StudentEntity：
public class StudentEntity {
//id
private Integer id;
//姓名
private String name;
//年齡
private Integer age;
//性別
private String sex;
//地址
private String address;
//是否刪除(0:未刪除,1:已刪除)
private Integer isDelete;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public Integer getIsDelete() {
return isDelete;
}
public void setIsDelete(Integer isDelete) {
this.isDelete = isDelete;
}
}
//StudentDao介面@Mapper//生成一個類，作用類似於xml
public interface StudentDao {
//查詢
@Select(“SELECT * FROM student”)
List queryAllStudent();
//新增
@Insert("INSERT INTO student(name,sex,age,address)VALUES(#{name},#{sex},#{age},#{address})")
int insertStudent(StudentEntity student);
//更新
@Update("UPDATE student SET name=#{name},sex=#{sex},age=#{age},address=#{address} WHERE id=#{id} AND is_delete=0")
int updateStudent(StudentEntity entity);
//刪除
@Delete("UPDATE student SET is_delete=1 WHERE id=#{id}")
int deleteStudent(Integer id);
}
第五步，建立StudentService介面，和StidentServiceImpl類...StudentService介面:
/**
* SpringBoot 整合 myBatis（註解）
* */
public interface StudentService {
//寫入資料(mybatis)
int insertStudent(StudentEntity studentEntity);
//查詢資料(mybatis)
List queryAllStudent();
//更新資料(mybatis)
int updateStudent(StudentEntity studentEntity);
//刪除資料(mybatis)
int deleteStudent(Integer id);
}
StudentServiceImpl類:@Service(“studentServices”)//別名
public class StudentServiceImpl implements StudentService {
@Resource
private StudentDao studentDao;
//myBatis 查詢資料
@Override
public List queryAllStudent() {
//執行查詢
List list = studentDao.queryAllStudent();
//組合資料
List newDate = dataUtil.getData(list);
//返回結果
return newDate;
}
//myBatis 寫入資料
@Override
public int insertStudent(StudentEntity studentEntity) {
//執行新增
int row = studentDao.insertStudent(studentEntity);
//返回結果
return row;
}
//myBatis 更新資料
@Override
public int updateStudent(StudentEntity studentEntity) {
//執行更新
int row = studentDao.updateStudent(studentEntity);
//返回結果
return row;
}
//myBatis 刪除資料
@Override
public int deleteStudent(Integer id) {
//執行刪除
int row = studentDao.deleteStudent(id);
//返回接果
return 0;
}
}
第七步，StudentController介面，和StudentControllerImpl類StudentController介面：
public interface StudentController {
//寫入資料(mybatis註解)
String insertStudent();
//查詢資料(mybatis註解)
String queryAllStudent();
//更新資料(mybatis註解)
String updateStudent();
//刪除資料(mybatis註解)
String deleteStudent();
}
StudentControllerImpl類:@RestController
public class StudentControllerImpl implements StudentController {
@Resource
private StudentService studentServices;
//myBatis 查詢資料(註解)
@RequestMapping("/query")
public String queryAllStudent() {
//執行查詢
List list = studentServices.queryAllStudent();
//組裝資料
List resList = dataUtil.getData(list);
//返回結果
return resList.toString();
}
//myBatis 新增資料(註解)
@RequestMapping("/insert")
public String insertStudent() {
//新建學生物件並賦值
StudentEntity stu = new StudentEntity();
stu.setName("趙四");
stu.setSex("男");
stu.setAge(12);
stu.setAddress("遼寧");
//執行寫入
int row = studentServices.insertStudent(stu);
//判斷結果
if (row == -1) {
return "新增失敗";
} else {
return "新增成功";
}
}
//myBatis 更新資料(註解)
@RequestMapping("/update")
public String updateStudent() {
//新建學生物件並賦值
StudentEntity stu = new StudentEntity();
stu.setName("王老七");
stu.setSex("男");
stu.setAge(42);
stu.setAddress("遼寧");
stu.setId(3);
//執行寫入
int row = studentServices.updateStudent(stu);
//判斷結果
if (row == -1) {
return "更新失敗";
} else {
return "更新成功";
}
}
//myBatis 刪除資料(註解)
@RequestMapping("/delete")
public String deleteStudent() {
//定義初始化
Integer id = 1;
//執行寫入
int row = studentServices.deleteStudent(id);
//判斷結果
if (row == -1) {
return "刪除失敗";
} else {
return "刪除成功";
}
}
}
剩下最後一個dataUtil類，import com.demo.entity.StudentEntity;
import java.util.ArrayList;
import java.util.List;
public class dataUtil {
//返回格式資料
public static List getData(List list){
//新建集合儲存資料
List newlist = new ArrayList();
//迴圈取出結果
for (int i = 0; i <list.size() ; i++) {
//新建學生物件
StudentEntity stu = (StudentEntity) list.get(i);
//填充資料
newlist.add(stu.getId());
newlist.add(stu.getName());
newlist.add(stu.getAge());
newlist.add(stu.getSex());
newlist.add(stu.getAddress());
}
//返回結果
return newlist;
}
}
寫完了，執行一下我的URL:localhost:8080/query 是不是註解方式很方便,如果有疑問請留言.........
下來看第二種方式:XML.....
首先，第一步:在resources檔案下新建mapper檔案，在mapper檔案中建立Student.xml
第二步，在application.properties 加上 "mybatis.mapper-locations=classpath:mapper/*.xml"
第三步，Student.xml程式碼: 第四步,StudentDao介面程式碼:StudentDao介面:
import com.demo.entity.StudentEntity;
import org.apache.ibatis.annotations.*;
import java.util.List;
@Mapper//生成一個類，作用類似於xml
public interface StudentDao {
//查詢所有學生資訊
List findStudent();
//新增學生資訊
int insertStudent(StudentEntity entity);
//更新學生資訊
int updateStudent(StudentEntity entity);
//刪除學生資訊
int deleteStudent(Integer id);
}
第五步，StudentService和StudentServiceImpl 程式碼：StudentService介面:
import com.demo.entity.StudentEntity;
import java.util.List;
/**
* SpringBoot 整合 myBatis（XML）
* */
public interface StudentService {
//xml 查詢所有學生資訊
List findStudent();
//xml 新增學生資訊
int insertStudent(StudentEntity entity);
//xml 更新學生資訊
int updateStudent(StudentEntity entity);
//xml 刪除學生資訊
int deleteStudent(Integer id);
}
StudentServiceImpl類:import com.demo.dao.StudentDao;
import com.demo.entity.StudentEntity;
import com.demo.service.StudentService;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
import java.util.List;
@Service(“studentServices”)
public class StudentServiceImpl implements StudentService {
@Resource
private StudentDao studentDao;
//xml 查詢
@Override
public List findStudent() {
//執行查詢
List list = studentDao.findStudent();
//返回結果
return list;
}
//xml 新增
@Override
public int insertStudent(StudentEntity entity) {
//執行新增
int row = studentDao.insertStudent(entity);
//返回結果
return row;
}
//xml 更新
@Override
public int updateStudent(StudentEntity entity) {
//執行更新
int row = studentDao.updateStudent(entity);
//返回結果
return 0;
}
//xml 刪除
@Override
public int deleteStudent(Integer id) {
//執行刪除
int row = studentDao.deleteStudent(id);
//返回結果
return 0;
}
}
第六步，StudentController介面和StudentControllerImpl類程式碼:StudentController介面：
public interface StudentController {
//寫入資料(XML)
String insertStudent();
//更新資料(XML)
String updateStudent();
//刪除資料(XML)
String deleteStudent();
//查詢資料(XML)
String findStudent();
}
StudentControllerImpl類:import com.demo.controller.StudentController;
import com.demo.entity.StudentEntity;
import com.demo.service.StudentService;
import com.demo.util.dataUtil;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import javax.annotation.Resource;
import java.util.List;
@RestController
public class StudentControllerImpl implements StudentController {
@Resource
private StudentService studentServices;
//myBatis 新增資料(XML)
@RequestMapping("/insert")
public String insertStudent() {
//新建學生物件並賦值
StudentEntity stu = new StudentEntity();
stu.setName("熊大");
stu.setSex("男");
stu.setAge(8);
stu.setAddress("遼寧");
//執行寫入
int row = studentServices.insertStudent(stu);
//判斷結果
if (row == -1) {
return "新增失敗";
} else {
return "新增成功";
}
}
//myBatis 更新資料(XML)
@RequestMapping("/update")
public String updateStudent() {
//新建學生物件並賦值
StudentEntity stu = new StudentEntity();
stu.setName("光頭強");
stu.setSex("男");
stu.setAge(42);
stu.setAddress("遼寧");
stu.setId(5);
//執行寫入
int row = studentServices.updateStudent(stu);
//判斷結果
if (row == -1) {
return "更新失敗";
} else {
return "更新成功";
}
}
//myBatis 刪除資料(XML)
@RequestMapping("/delete")
public String deleteStudent() {
//定義初始化
Integer id = 5;
//執行寫入
int row = studentServices.deleteStudent(id);
//判斷結果
if (row == -1) {
return "刪除失敗";
} else {
return "刪除成功";
}
}
//myBatis 查詢資料(XML)
@RequestMapping("/find")
@Override
public String findStudent() {
//執行查詢
List list = studentServices.findStudent();
//組裝返回資料
List newList = dataUtil.getData(list);
//System.out.println("jjjj:"+newList);
//返回結果
return newList.toString();
}
}
第七步,StudentEntity類:
package com.demo.entity;
public class StudentEntity {
//id
private Integer id;
//姓名
private String name;
//年齡
private Integer age;
//性別
private String sex;
//地址
private String address;
//是否刪除(0:未刪除,1:已刪除)
private Integer isDelete;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public Integer getIsDelete() {
return isDelete;
}
public void setIsDelete(Integer isDelete) {
this.isDelete = isDelete;
}
}
“`
XML方式也就這樣完事了，是不是很簡單。請路過的大神多多指點，如有疑問請留言。。。。。。