spring boot一个简单用户管理DEMO

概述

该Demo旨在部署一个简单spring boot工程，包含数据编辑和查看功能

POM配置

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>

	<groupId>com.roncoo.education</groupId>
	<artifactId>spring-boot-demo-15-1</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>jar</packaging>

	<name>spring-boot-demo-15-1</name>
	<description>Demo project for Spring Boot</description>

	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>1.4.0.RELEASE</version>
		<relativePath /> <!-- lookup parent from repository -->
	</parent>

	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
		<java.version>1.8</java.version>
	</properties>

	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-devtools</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-freemarker</artifactId>
		</dependency>
		<dependency>
			<groupId>org.webjars</groupId>
			<artifactId>jquery</artifactId>
			<version>2.1.4</version>
		</dependency>
		
		<!-- 数据库 -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-data-jpa</artifactId>
		</dependency>

		 
		<dependency>
		    <groupId>org.postgresql</groupId>
		    <artifactId>postgresql</artifactId>
		    <version>42.1.1</version>
		</dependency>
		 
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
	</dependencies>

	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>


</project>

　　

属性配置

server.port=8080


spring.datasource.url=jdbc:postgresql://127.0.0.1:5432/postgis_24_sample?currentSchema=lilei_1
spring.datasource.username=postgres
spring.datasource.password=lilei
spring.datasource.driver-class-name=org.postgresql.Driver


spring.jpa.hibernate.ddl-auto= update

spring.jpa.show-sql=true

　　

工程结构图

核心代码

dao层

package com.lilei.spring_boot_db.boot.dao;

import java.util.List;

import com.lilei.spring_boot_db.boot.bean.User;

public interface UserDao {
	
	public User getUser(int id);
	
	public int updateUser(User u);
	
	public int insertUser(User u);
	
	public int deleteUser(int id);
	
	public List<User> queryUser(int pageSize,int pageNo);

}

dao实现层

package com.lilei.spring_boot_db.boot.dao.impl;

import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Repository;

import com.lilei.spring_boot_db.boot.bean.User;
import com.lilei.spring_boot_db.boot.dao.UserDao;
@Repository
public class UserDaoImpl implements UserDao {
	
	@Autowired
	protected JdbcTemplate jdbc;

	public User getUser(int id) {
		
		
		
		String sql = "select name,create_date from user where id=?";
		
		List<Map<String,Object>> list = jdbc.queryForList(sql, id);
		
		if (list.size()>0){
			String name = list.get(0).get("name").toString();
			Date createDate = (Date) list.get(0).get("create_date");
			User u = new User(id,name);
			u.setCreateTime(createDate);
			return u;
		}
		
		return null;
	}

	public int updateUser(User u) {
		
		String sql = "update lilei_1.user set name=?,create_date=? where id=?";
		
		int result = jdbc.update(sql, u.getName(),u.getCreateTime(),u.getId());
		
		return result;
	}

	public int insertUser(User u) {
		String sql = "insert into lilei_1.user(id,name,create_date) values (?,?,?)";
		
		int result = jdbc.update(sql, u.getId(),u.getName(),u.getCreateTime());
		
		return result;
	}

	public int deleteUser(int id) {
		
		String sql = "delete from lilei_1.user where id=?";
		
		int result = jdbc.update(sql, id);
		
		return result;
		
	}

	public List<User> queryUser(int pageSize, int pageNo) {
		
		String sql = "select id,name,create_date from lilei_1.user limit ? offset ?";
		
		List<Map<String,Object>> list = jdbc.queryForList(sql, pageSize,((pageNo-1) * pageSize));
		
		List<User> us = new ArrayList<User>();
		
		for(Map<String,Object> m:list){
			int id = Integer.parseInt(m.get("id").toString());
			String name = m.get("name").toString();
			Date createDate = (Date) m.get("create_date");
			User u = new User(id,name);
			u.setCreateTime(createDate);
			us.add(u);
		}
		
		return us;
	}

}

　　

　　

控制器

package com.lilei.spring_boot_db.boot.controller;

import java.util.Date;
import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.lilei.spring_boot_db.boot.bean.User;
import com.lilei.spring_boot_db.boot.dao.UserDao;

@RestController
@RequestMapping("/user")
public class UserService {

	@Autowired
	protected UserDao userDao;

	@RequestMapping("insert")
	public String insertUser(String name, int id) {

		User u = new User(id, name);

		userDao.insertUser(u);

		return "success";
	}

	@RequestMapping("delete")
	public String deleteUser(int id) {
		userDao.deleteUser(id);
		return "success";
	}

	@RequestMapping("update")
	public String updateUser(String name,int id) {
		User u = new User(id,name);
		u.setCreateTime(new Date());
		userDao.updateUser(u);
		return "success";
	}

	@RequestMapping("query")
	public List<User> query(int page_size, int page_no) {
		return userDao.queryUser(page_size, page_no);
	}
}