SpringBoot实战之—与微信小程序的通信(附源码)

基于一个完整的极简后台框架https://www.jianshu.com/p/871e70b3ad7c这篇文章受到了广大程序爱好者的喜爱，说明在目前公司级别的项目中SpringBoot的重要性所以本人决定写一个系列关于SpringBoot在项目中的实战文章，希望大家喜欢！

程序结构如下：

数据库表结构如下

/*
 Navicat Premium Data Transfer

 Source Server         : springboot
 Source Server Type    : MySQL
 Source Server Version : 50710
 Source Host           : localhost
 Source Database       : springbootdemo

 Target Server Type    : MySQL
 Target Server Version : 50710
 File Encoding         : utf-8

 Date: 05/03/2019 17:40:03 PM
*/

SET NAMES utf8;
SET FOREIGN_KEY_CHECKS = 0;

-- ----------------------------
--  Table structure for `tb_area`
-- ----------------------------
DROP TABLE IF EXISTS `tb_area`;
CREATE TABLE `tb_area` (
  `area_id` int(2) NOT NULL AUTO_INCREMENT,
  `area_name` varchar(255) DEFAULT NULL,
  `priority` int(2) DEFAULT NULL,
  `create_time` datetime DEFAULT NULL,
  `last_edit_time` datetime DEFAULT NULL,
  PRIMARY KEY (`area_id`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;

-- ----------------------------
--  Records of `tb_area`
-- ----------------------------
BEGIN;
INSERT INTO `tb_area` VALUES ('1', '南苑', '2', null, null), ('2', '北苑', '1', null, null);
COMMIT;

SET FOREIGN_KEY_CHECKS = 1;

创建SpringBoot工程并在Pom.xml中添加依赖

<?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.foreknow</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>demo</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.1.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-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.2</version>
        </dependency>

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

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>

        <dependency>
            <groupId>com.mchange</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.5.2</version>
        </dependency>
    </dependencies>

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

项目的配制资源：

1. DataSourceConfiguration 数据源的配制

package com.foreknow.config.dao;

import com.mchange.v2.c3p0.ComboPooledDataSource;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.beans.PropertyVetoException;

/**
 * Created by imac on 2019/3/5.
 */
@Configuration
//mapper的扫描路径
@MapperScan("com.foreknow.dao")
public class DataSourceConfiguration {
    @Value("${jdbc.driver}")
    private String jdbcDriver;
    @Value("${jdbc.url}")
    private String jdbcUrl;
    @Value("${jdbc.username}")
    private String jdbcUsername;
    @Value("${jdbc.password}")
    private String jdbcPassword;

    @Bean(name = "dataSource")
    public ComboPooledDataSource createDataSource() throws PropertyVetoException {
        ComboPooledDataSource dataSource = new ComboPooledDataSource();

        dataSource.setDriverClass(jdbcDriver);
        dataSource.setJdbcUrl(jdbcUrl);
        dataSource.setUser(jdbcUsername);
        dataSource.setPassword(jdbcPassword);
        dataSource.setAutoCommitOnClose(false);
        return dataSource;
    }
}

2.会话工厂的配制SessionFactoryConfiguration

package com.foreknow.config.dao;


import org.mybatis.spring.SqlSessionFactoryBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;

import javax.sql.DataSource;
import java.io.IOException;

/**
 * Created by imac on 2019/3/5.
 */
@Configuration
public class SessionFactoryConfiguration {
    @Value("${mybatis_config_file}")
    private String mybatisConfigFilePath;
    @Value("${mapper_path}")
    private String mapperPath;
    @Value("${entity_package}")
    private String entityPackage;
    @Autowired
    private DataSource dataSource;

    @Bean(name="sqlSessionFactory")
    public SqlSessionFactoryBean createSqlSessionFactoryBean() throws IOException {
        SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
        sqlSessionFactoryBean.setConfigLocation(new ClassPathResource(mybatisConfigFilePath));
        PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
        String packageSearchPath = PathMatchingResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX+mapperPath;
        //SqlSessionFactoryBean sessionFactoryBean = new SqlSessionFactoryBean();
        sqlSessionFactoryBean.setMapperLocations(resolver.getResources(packageSearchPath));
        sqlSessionFactoryBean.setDataSource(dataSource);
        sqlSessionFactoryBean.setTypeAliasesPackage(entityPackage);
        return sqlSessionFactoryBean;
    }
}

3.业务层事物的配制TransactionManagementConfiguration

package com.foreknow.config.service;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import org.springframework.transaction.annotation.TransactionManagementConfigurer;

import javax.sql.DataSource;

/**
 * Created by imac on 2019/3/5.
 */
@Configuration
@EnableTransactionManagement
public class TransactionManagementConfiguration implements TransactionManagementConfigurer {
    @Autowired
    private DataSource dataSource;
    @Override
    public PlatformTransactionManager annotationDrivenTransactionManager() {
        return new DataSourceTransactionManager(dataSource);
    }
}