SpringBoot项目创建（Layui增删改查）
一：创建SpingBoot项目
点击新建项目
然后点击下一步
然后点击完成
然后创建一个新的index.html页面
有可能你的会报错所以加一个取消数据源的自动配置的一个注解。
application.properties里面还要配置一下Static
然后就出来了
二：SpringBoot项目的书写
UsersController:
package com.hp.controller;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.hp.entity.Stadium;
import com.hp.entity.User;
import com.hp.service.Service;
import com.hp.util.JsonData;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import java.util.List;
@Controller
@RequestMapping(value = "/login")
public class UsersController {
@Resource
private Service service;
@PostMapping("/login")
@ResponseBody
public Object login(User user, HttpServletRequest request) {
user =service.login(user);
if(user!=null){
request.getSession().setAttribute("user",user);
return JsonData.buildSuccess(200);
}else{
return JsonData.buildError("账号密码错误！");
}
}
@RequestMapping("/list")
@ResponseBody
public Object list(Stadium obj, @RequestParam(value = "page",defaultValue = "1")Integer page,
@RequestParam(value = "limit",defaultValue = "10")Integer limit) {
PageHelper.startPage(page,limit);
List list = service.find(obj);
return JsonData.buildSuccess(new PageInfo<>(list));
}
@RequestMapping("/del")
@ResponseBody
public Object del(Integer sid){
int i=service.del(sid);
return JsonData.buildSuccess(i>0?"删除成功！":"删除失败！");
}
@RequestMapping("/add")
@ResponseBody
public Object add(User user){
int i=service.add(user);
return JsonData.buildSuccess(i>0?"添加成功！":"添加失败！");
}
}
dao.mapper
package com.hp.dao;
import com.hp.entity.Stadium;
import com.hp.entity.User;
import org.apache.ibatis.annotations.Mapper;
import java.util.List;
@Mapper
public interface mapper {
List login(User user);
List find(Stadium stu);
int del(Integer sid);
int add(User user);
}
实体类：entity
package com.hp.entity;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import java.util.Date;
@Data
@NoArgsConstructor
@AllArgsConstructor
public class Stadium {
/**
*
**/
private Integer sid;
/**
*
**/
private String sname;
/**
*
**/
private String address;
/**
*
**/
private String description;
/**
*
**/
private Date begintime;
/**
*
**/
private Date endtime;
}package com.hp.entity;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@NoArgsConstructor
@AllArgsConstructor
public class User {
/**
*
**/
private Integer uid;
/**
*
**/
private String username;
/**
*
**/
private String pwd;
/**
*
**/
private String tel;
/**
*
**/
private String sex;
/**
*
**/
private String idcard;
}Service：
package com.hp.service;
import com.hp.entity.Stadium;
import com.hp.entity.User;
import java.util.List;
public interface Service {
User login(User user);
List find(Stadium stu);
int del(Integer sid);
int add(User user);
}
Serviceimpl
package com.hp.service;
import com.hp.dao.mapper;
import com.hp.entity.Stadium;
import com.hp.entity.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import javax.annotation.Resource;
import java.util.List;
@org.springframework.stereotype.Service
public class Serviceimpl implements Service {
@Resource
private mapper mapper;
@Override
public User login(User user) {
List list = mapper.login(user);
if (list != null && list.size() > 0) {
return list.get(0);
}
return null;
}
@Override
public List find(Stadium stu) {
return mapper.find(stu);
}
@Override
public int del(Integer sid) {
return mapper.del(sid);
}
@Override
public int add(User user) {
return mapper.add(user);
}
}
util：
package com.hp.util;
/**
* 返回json数据
*/
public class JsonData {
private Integer code; //状态码 , 200代表成功; -1代表失败
private Object data; //返回的数据
private String msg; //当前json信息描述
public JsonData() {}
public JsonData(Integer code, Object data, String msg) {
this.code = code;
this.data = data;
this.msg = msg;
}
/**
* 操作成功,没有数据返回,携带自定义描述信息
* @param msg
* @return
*/
public static JsonData buildSuccess(String msg){
return new JsonData(200,null,msg);}
/**
* 操作成功,有数据返回,携带自定义描述信息
* @param data
* @return
*/
public static JsonData buildSuccess(Object data,String msg){
return new JsonData(200,data,msg); }
public static JsonData buildSuccess(Object data){
return new JsonData(200,data,null); }
/**
* 操作失败,没有数据,携带自定义描述信息
* @param msg (自定义)
* @return
*/
public static JsonData buildError(String msg){
return new JsonData(-1,null,msg);
}
public Integer getCode() {
return code;
}
public void setCode(Integer code) {
this.code = code;
}
public Object getData() {
return data;
}
public void setData(Object data) {
this.data = data;
}
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}
@Override
public String toString() {
return "JsonData{" +
"code=" + code +
", data=" + data +
", msg='" + msg + '\'' +
'}';
}
}