Spring boot 用pageHelper进行分页
Main 方法
@RestController
@SpringBootApplication
public class SpringBoot {
public static void main(String[] args) throws Exception {
SpringApplication.run(SpringBoot.class, args);
}
@Bean
public PageHelper pageHelper() {
PageHelper pageHelper = new PageHelper();
Properties properties = new Properties();
properties.setProperty("dialect","mysql");
properties.setProperty("supportMethodsArguments","true");
pageHelper.setProperties(properties);
return pageHelper;
}
}
逻辑层
@Autowired
private StudentMapper mapper;
public Result Query(String name, String curPage, String pageNum)throws Exception{
if(StringUtils.isEmpty(curPage)) {
curPage="1";
}
if(StringUtils.isEmpty(pageNum)) {
pageNum="10";
}
if(StringUtils.isEmpty(name)) {
name="";
}
int curPageI=Integer.parseInt(curPage);
int pageNumI=Integer.parseInt(pageNum);
List li=mapper.querylimit("%"+name+"%",curPageI,pageNumI);
PageInfo pi=new PageInfo(li);
Result r =new Result();
r.setCode(0);
r.setCount((int)pi.getTotal());
r.setData(li);
return r;
}
控制层
@Autowired
private StudentService service;
@GetMapping(value="/students")
public Result ListStudent(String name, String page, String limit) throws Exception {
try {
Result li = service.Query(name, page,limit);
return li;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
@PostMapping(value="/student")
public Result addStudent(Student student) throws Exception {
Result li=new Result();
try{
service.add(student);
}catch (Exception e){
//回调函数
li.setCode(1);
li.setMsg("新增出错:"+e.getMessage());
}
return li;
}
@DeleteMapping(value="/student/{id}")
public Result deleteStudent(@PathVariable String id) throws Exception {
Result li=new Result();
try{
service.delete(id);
}catch (Exception e){
li.setCode(1);
li.setMsg("删除出错:"+e.getMessage());
}
return li;
}
@PutMapping(value="/student/{id}")
public Result updateStudent(@PathVariable String id, Student student) throws Exception {
Result li=new Result();
student.setId(id);
try{
service.update(student);
}catch (Exception e){
li.setCode(1);
li.setMsg("修改出错:"+e.getMessage());
}
return li;
}
xml文件配置
org.springframework.boot
spring-boot-starter-web
mysql
mysql-connector-java
org.springframework.boot
spring-boot-starter-data-jpa
com.alibaba
druid-spring-boot-starter
1.1.10
org.mybatis.spring.boot
mybatis-spring-boot-starter
1.3.1
commons-lang
commons-lang
2.1
com.github.pagehelper
pagehelper
4.1.6
mapper
@Mapper
public interface StudentMapper{
@Select("select * from student where name like #{name}")
public List querylimit(@Param("name")String name, @Param("pageNum")int pageNum, @Param("pageSize") int pageSize);
@Delete("delete from student where id=#{id}")
public void delete(@Param("id")String id);
@Insert("insert into student(name,age,sex,email,phone) values(#{name},#{age},#{sex},#{email},#{phone})")
public void add(Student student);
@Update("update student set name=#{name},age=#{age},sex=#{sex},email=#{email},phone=#{phone} where id=#{id}")
public void update(Student student);
}
回调函数属性类
public class Result {
private int code;
private String msg;
private int count;
private List data;
public int getCode() {
return code;
}
public void setCode(int code) {
this.code = code;
}
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}
public int getCount() {
return count;
}
public void setCount(int count) {
this.count = count;
}
public List getData() {
return data;
}
public void setData(List data) {
this.data = data;
}
}
属性类
public class Student {
private String id;
private String name;
private String age;
private String sex;
private String email;
private String phone;
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAge() {
return age;
}
public void setAge(String age) {
this.age = age;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
}
application.properties 配置数据库连接
spring.datasource.url=jdbc:mysql://localhost/nuit02
spring.datasource.username=root
spring.datasource.password=ps123456
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
html 视图
Title