SpringBoot整合JDBC数据库操作第八弹-代码注入Dat

上篇文章我们讲到了自定义RowMapper返回结果体,这篇文章主要讲解一下在项目中去使用代码注入DataSource(也是为了将项目的属性定制为自己喜欢的名称等).

• 将application.yml配置文件修改为以下内容

  #spring:
  #  datasource:
  #    # 使用数据库驱动
  #    driver-class-name: com.mysql.jdbc.Driver
  #    # 数据库连接地址
  #    url: jdbc:mysql://localhost:3306/test
  #    # 数据库用户名
  #    username: root
  #    # 数据库用户密码
  #    password: 123456
   
  custom:
    source:
      driver: com.mysql.jdbc.Driver
      url: jdbc:mysql://localhost:3306/test
      username: root
      password: 123456
  

• 在源码目录下新建config目录, 在该目录下新建CustomDataSource类文件

  /**
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   * <p>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p>
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package com.edurt.config;
   
  import org.springframework.beans.factory.annotation.Value;
  import org.springframework.boot.autoconfigure.jdbc.DataSourceBuilder;
  import org.springframework.context.annotation.Bean;
  import org.springframework.context.annotation.Configuration;
  import org.springframework.jdbc.core.JdbcTemplate;
   
  import javax.sql.DataSource;
   
  /**
   * CustomDataSource <br/>
   * 描述 : CustomDataSource <br/>
   * 作者 : qianmoQ <br/>
   * 版本 : 1.0 <br/>
   * 创建时间 : 2018-03-28 下午2:51 <br/>
   * 联系作者 : <a href="mailTo:shichengoooo@163.com">qianmoQ</a>
   */
  @Configuration
  public class CustomDataSource {
   
      @Value(value = "${custom.source.driver}")
      private String driver;
   
      @Value(value = "${custom.source.url}")
      private String url;
   
      @Value(value = "${custom.source.username}")
      private String username;
   
      @Value(value = "${custom.source.password}")
      private String password;
   
      @Bean
      public DataSource dataSource() {
          return DataSourceBuilder.create()
                  .driverClassName(driver)
                  .url(url)
                  .username(username)
                  .password(password).build();
      }
   
   
      @Bean
      @ConfigurationProperties(prefix = "custom.source")
      public DataSource dataSource() {
          return DataSourceBuilder.create().build();
      }
   
      @Bean
      public JdbcTemplate jdbcTemplate() {
          return new JdbcTemplate(dataSource());
      }
   
  }
  

• 启动服务测试数据即可