java入门-springboot整合mybatis+layui
源码地址:https://codechina.csdn.net/wwwzhouzy/springboot-ssm
先看看项目启动，访问页面的效果图：
需要注意的地方 ：
1、引入layui相关资源文件时注意路径，尤其是引用Thymeleaf标签时
静态资源默认从static目录下查找
2、注意json传送数据的编码问题，不然会有乱码
继承WebMvcConfigurationSupport类，重写方法：
@Bean
public HttpMessageConverter responseBodyConverter() {
return new StringHttpMessageConverter(Charset.forName("UTF-8"));
}
@Override
public void configureMessageConverters(List> converters) {
super.configureMessageConverters(converters);
converters.add(responseBodyConverter());
}
@Override
protected void extendMessageConverters(List> converters) {
for (HttpMessageConverter converter : converters) {
// 解决controller返回普通文本中文乱码问题
if (converter instanceof StringHttpMessageConverter) {
((StringHttpMessageConverter) converter).setDefaultCharset(StandardCharsets.UTF_8);
}
// 解决controller返回json对象中文乱码问题
if (converter instanceof MappingJackson2HttpMessageConverter) {
((MappingJackson2HttpMessageConverter) converter).setDefaultCharset(StandardCharsets.UTF_8);
}
}
} 3、我用的mysql5.0版本，所以springboot采用了2.0.5
org.springframework.boot
spring-boot-starter-parent
2.0.5.RELEASE
一、项目架构
二、核心代码
1、pom引包
4.0.0
com.zhouzy.ssm
zhouzySsm
0.0.1-SNAPSHOT
zhouzySsm
http://www.example.com
org.springframework.boot
spring-boot-starter-parent
2.0.5.RELEASE
UTF-8
UTF-8
1.8
Finchley.SR1
org.springframework.boot
spring-boot-starter-web
org.springframework.boot
spring-boot-starter-thymeleaf
org.springframework.boot
spring-boot-starter-jdbc
org.mybatis.spring.boot
mybatis-spring-boot-starter
1.3.2
mysql
mysql-connector-java
runtime
com.alibaba
fastjson
1.2.30
org.springframework.boot
spring-boot-starter-test
test
org.springframework.boot
spring-boot-maven-plugin
2、配置文件
application.yml
server:
port: 8080
spring:
application:
mame: ssm
thymeleaf:
prefix: classpath:/templates/
cache: false
datasource:
username: root
password: 123456
url: jdbc:mysql://localhost:3306/zhouzy?useUnicode=true&characterEncoding=utf-8&useSSL=true&serverTimezone=UTC
driver-class-name: com.mysql.jdbc.Driver
mybatis:
mapper-locations: classpath:mapper/*Mapper.xml
type-aliases-package: com.zhouzy.ssm.model
#showSql
logging:
level:
com:
example:
mapper : debug3、html文件
userList.html
layout 后台大布局 - Layui
4、mybatis映射文件
id,
name,
age,
sex,
address,
mobile,
create_time,
update_time
INSERT INTO t_user_info
name,
age,
sex,
address,
mobile,
create_time,
update_time
#{name},
#{age},
#{sex},
#{address},
#{mobile},
#{createTime},
#{updateTime}
DELETE FROM t_user_info
WHERE id = #{id}
UPDATE t_user_info
name = #{name},
age = #{age},
sex = #{sex},
address = #{address},
mobile = #{mobile},
create_time = #{createTime},
update_time = #{updateTime}
WHERE id = #{id}
5、mvc配置类
package com.zhouzy.ssm.config;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.List;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.StringHttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {
//通过重写配置方法覆盖
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("/mapper/**").addResourceLocations("classpath:/mapper/");//mapper.xml
registry.addResourceHandler("/**")
.addResourceLocations("classpath:/static/")
.addResourceLocations("classpath:/templates/");
super.addResourceHandlers(registry);
}
@Bean
public HttpMessageConverter responseBodyConverter() {
return new StringHttpMessageConverter(Charset.forName("UTF-8"));
}
@Override
public void configureMessageConverters(List> converters) {
super.configureMessageConverters(converters);
converters.add(responseBodyConverter());
}
@Override
protected void extendMessageConverters(List> converters) {
for (HttpMessageConverter converter : converters) {
// 解决controller返回普通文本中文乱码问题
if (converter instanceof StringHttpMessageConverter) {
((StringHttpMessageConverter) converter).setDefaultCharset(StandardCharsets.UTF_8);
}
// 解决controller返回json对象中文乱码问题
if (converter instanceof MappingJackson2HttpMessageConverter) {
((MappingJackson2HttpMessageConverter) converter).setDefaultCharset(StandardCharsets.UTF_8);
}
}
}
}
6、启动类
package com.zhouzy.ssm;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@MapperScan("com.zhouzy.ssm.mapper") //扫描的mapper
@SpringBootApplication
public class Webapplication {
public static void main(String[] args) {
SpringApplication.run(Webapplication.class, args);
}
}
7、控制层
package com.zhouzy.ssm.controller;
import java.util.List;
import java.util.Map;
import javax.annotation.Resource;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import com.alibaba.fastjson.JSONObject;
import com.zhouzy.ssm.model.DataGrid;
import com.zhouzy.ssm.model.PageInfo;
import com.zhouzy.ssm.model.UserInfo;
import com.zhouzy.ssm.service.UserInfoService;
@Controller
@RequestMapping("/user")
public class UserInfoController {
@Resource
private UserInfoService userInfoService;
/**
* 新增
* @author zhouzhiyao
* @date 2021/08/03
**/
@RequestMapping("/insert")
public void insert(UserInfo userInfo){
userInfoService.insert(userInfo);
}
/**
* 刪除
* @author zhouzhiyao
* @date 2021/08/03
**/
@RequestMapping("/delete")
public void delete(int id){
userInfoService.delete(id);
}
/**
* 更新
* @author zhouzhiyao
* @date 2021/08/03
**/
@RequestMapping("/update")
public void update(UserInfo userInfo){
userInfoService.update(userInfo);
}
/**
* 查询 根据主键 id 查询
* @author zhouzhiyao
* @date 2021/08/03
**/
@RequestMapping("/load")
public Object load(int id){
return userInfoService.load(id);
}
/**
* 查询 分页查询
* @author zhouzhiyao
* @date 2021/08/03
**/
@RequestMapping("/list")
public String pageList() {
return "user/userList";
}
/**
* 查询 分页查询
* @author zhouzhiyao
* @date 2021/08/03
**/
@SuppressWarnings("unchecked")
@RequestMapping("/listData")
@ResponseBody
public String listData(PageInfo page) {
int pageNum = page.getPage();
int size = page.getLimit();
Map map = userInfoService.pageList((pageNum-1)*size, size);
List data = (List)map.get("data");
int count = (Integer)map.get("count");
DataGrid grid = new DataGrid(data,count,0,null);
return JSONObject.toJSONString(grid);
}
}
8、service层
package com.zhouzy.ssm.service;
import java.util.Map;
import com.zhouzy.ssm.model.UserInfo;
/**
* @description 用户信息表
* @author zhouzhiyao
* @date 2021-08-03
*/
public interface UserInfoService {
/**
* 新增
*/
public void insert(UserInfo userInfo);
/**
* 删除
*/
public void delete(int id);
/**
* 更新
*/
public void update(UserInfo userInfo);
/**
* 根据主键 id 查询
*/
public UserInfo load(int id);
/**
* 分页查询
*/
public Map pageList(int offset, int pagesize);
}
package com.zhouzy.ssm.service.impl;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.annotation.Resource;
import org.springframework.stereotype.Service;
import com.zhouzy.ssm.mapper.UserInfoMapper;
import com.zhouzy.ssm.model.UserInfo;
import com.zhouzy.ssm.service.UserInfoService;
/**
* @description 用户信息表
* @author zhouzhiyao
* @date 2021-08-03
*/
@Service
public class UserInfoServiceImpl implements UserInfoService {
@Resource
private UserInfoMapper userInfoMapper;
public void insert(UserInfo userInfo) {
userInfoMapper.insert(userInfo);
}
public void delete(int id) {
userInfoMapper.delete(id);
}
public void update(UserInfo userInfo) {
userInfoMapper.update(userInfo);
}
public UserInfo load(int id) {
return userInfoMapper.load(id);
}
public Map pageList(int offset, int pagesize) {
List pageList = userInfoMapper.pageList(offset, pagesize);
int totalCount = userInfoMapper.pageListCount();
// result
Map result = new HashMap();
result.put("data", pageList);
result.put("count", totalCount);
return result;
}
}
9、mapper层
package com.zhouzy.ssm.mapper;
import java.util.List;
import org.apache.ibatis.annotations.Param;
import org.springframework.stereotype.Repository;
import com.zhouzy.ssm.model.UserInfo;
/**
* @description 用户信息表
* @author zhouzhiyao
* @date 2021-08-03
*/
@Repository
public interface UserInfoMapper {
/**
* 新增
* @author zhouzhiyao
* @date 2021/08/03
**/
int insert(UserInfo userInfo);
/**
* 刪除
* @author zhouzhiyao
* @date 2021/08/03
**/
int delete(int id);
/**
* 更新
* @author zhouzhiyao
* @date 2021/08/03
**/
int update(UserInfo userInfo);
/**
* 查询 根据主键 id 查询
* @author zhouzhiyao
* @date 2021/08/03
**/
UserInfo load(int id);
/**
* 查询 分页查询
* @author zhouzhiyao
* @date 2021/08/03
**/
List pageList(@Param("offset")int offset,@Param("pageSize")int pageSize);
/**
* 查询 分页查询 count
* @author zhouzhiyao
* @date 2021/08/03
**/
int pageListCount();
}
10、mdelo对象
实体类
package com.zhouzy.ssm.model;
import java.io.Serializable;
import java.util.Date;
/**
* @description 用户信息表
* @author zhouzhiyao
* @date 2021-08-03
*/
public class UserInfo implements Serializable {
private static final long serialVersionUID = 1L;
/**
* id
*/
private Long id;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
/**
* 姓名
*/
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
/**
* 年龄
*/
private Integer age;
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
/**
* 性别：0：男 1：女
*/
private Integer sex;
public Integer getSex() {
return sex;
}
public void setSex(Integer sex) {
this.sex = sex;
}
/**
* 地址
*/
private String address;
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
/**
* 手机号
*/
private String mobile;
public String getMobile() {
return mobile;
}
public void setMobile(String mobile) {
this.mobile = mobile;
}
/**
* 创建时间
*/
private Date createTime;
public Date getCreateTime() {
return createTime;
}
public void setCreateTime(Date createTime) {
this.createTime = createTime;
}
/**
* 更新时间
*/
private Date updateTime;
public Date getUpdateTime() {
return updateTime;
}
public void setUpdateTime(Date updateTime) {
this.updateTime = updateTime;
}
public UserInfo() {}
}layui表格对应的对象类
package com.zhouzy.ssm.model;
import java.io.Serializable;
import java.util.List;
public class DataGrid implements Serializable{
/**
*
*/
private static final long serialVersionUID = 1L;
private int code;
private String msg;
private List data;
private int count;
public DataGrid(){
}
public DataGrid(List data,int count,int code,String msg){
this.data = data;
this.count = count;
this.code = code;
this.msg = msg;
}
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 List getData() {
return data;
}
public void setData(List data) {
this.data = data;
}
public int getCount() {
return count;
}
public void setCount(int count) {
this.count = count;
}
}
package com.zhouzy.ssm.model;
public class PageInfo {
private int page = 1;
private int limit = 20;
public int getPage() {
return page;
}
public void setPage(int page) {
this.page = page;
}
public int getLimit() {
return limit;
}
public void setLimit(int limit) {
this.limit = limit;
}
}
11、layui文件
需要从layui官网下载对应的资源文件 ，放入resources/static目录下
三、启动测试
访问：http://localhost:8080/
