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SpringBoot实现SSM(附上例子)

2020年07月17日  | 移动技术网IT编程  | 我要评论

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最近在学SpringBoot,刚好今天听老师讲了SpringBoot来实现SSM,就打算写篇博客跟大家做个分享。

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我的项目架构如图:

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新建项目

因为我们要建的是SSM ,所以大家这3个选项选上
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Mybatis不好找的话就直接搜索框打字搜索,如图:

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新建项目好之后,记得配置下JDK版本 以及Maven的路径(重点!)

如下2张图:
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本次项目一共写了7个文件,文件名见图:
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其他文件无变动。

首先先在pom.xml添加所需依赖

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
        </dependency>

        <dependency>
            <groupId>org.apache.tomcat.embed</groupId>
            <artifactId>tomcat-embed-jasper</artifactId>
        </dependency>

        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
        </dependency>

Maven会去帮我们下载。

写实体类User

package com.etc.entity;

import java.util.Date;

import org.springframework.format.annotation.DateTimeFormat;

public class User {
	private Integer id; //id 
	private String userCode; //用户编码
	private String userName; //用户名称
	private String userPassword; //用户密码
	private Integer gender;  //性别
	
	@DateTimeFormat(pattern="yyyy-MM-dd")
	private Date birthday;  //出生日期
	private String phone;   //电话
	private String address; //地址
	private Integer userRole;    //用户角色
	private Integer createdBy;   //创建者
	private Date creationDate; //创建时间
	private Integer modifyBy;     //更新者
	private Date modifyDate;   //更新时间
	
	private Integer age;//年龄
	
	private String userRoleName;    //用户角色名称
	private String picUrl;
	private String idPic;
	
	public String getIdPic() {
		return idPic;
	}
	public void setIdPic(String idPic) {
		this.idPic = idPic;
	}
	public String getPicUrl() {
		return picUrl;
	}
	public void setPicUrl(String picUrl) {
		this.picUrl = picUrl;
	}
	public void setAge(Integer age) {
		this.age = age;
	}
	public String getUserRoleName() {
		return userRoleName;
	}
	public void setUserRoleName(String userRoleName) {
		this.userRoleName = userRoleName;
	}
	public Integer getAge() {
		/*long time = System.currentTimeMillis()-birthday.getTime();
		Integer age = Long.valueOf(time/365/24/60/60/1000).IntegerValue();*/
		Date date = new Date();
		Integer age = date.getYear()-birthday.getYear();
		return age;
	}
	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;
	}
}

application.properties

server.port=7878
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/smbms?serverTimezone=UTC
spring.datasource.username=root
spring.datasource.password=root
mybatis.mapper-locations=classpath:mapper/*.xml
mybatis.type-aliases-package=com.etc.entity

要在数据库里建一张表名为 smbms的表(Mysql),字段的话跟我上面写的User类字段一致就行,账号密码不一致的,自行修改。
(端口号大家可以修改,我的是7878

dao层UserMapper

package com.etc.dao;

import com.etc.entity.User;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Repository;
import org.springframework.stereotype.Service;

@Repository
@Mapper
public interface UserMapper {
    
    public User getUserById(@Param("id")String id);
}

UserService

package com.etc.controller;

import com.etc.dao.UserMapper;
import com.etc.entity.User;
import com.etc.service.UserService;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;

@RestController
public class UserController {

    @Resource
    private UserService userService;
    @RequestMapping("getUser")
    public User getUserById(String id) throws Exception {
        return userService.getUserById(id);
    }
}

UserServiceImpl

package com.etc.service;

import com.etc.dao.UserMapper;
import com.etc.entity.User;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
@Service("userService")
public class UserServiceImpl implements UserService{
    @Resource
    private UserMapper userMapper;


    @Override
    public User getUserById(String id){
        User user = null;
        try{
            user=userMapper.getUserById(id);
        }catch(Exception e){
            user=null;
            e.getStackTrace();
        }



        return user;
    }
}

最后一个类是前端控制器UserController

package com.etc.controller;

import com.etc.dao.UserMapper;
import com.etc.entity.User;
import com.etc.service.UserService;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;

@RestController
public class UserController {

    @Resource
    private UserService userService;
    @RequestMapping("getUser")
    public User getUserById(String id) throws Exception {
        return userService.getUserById(id);
    }
}


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本文地址:https://blog.csdn.net/bookssea/article/details/107387152

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