数据库连接池

Author: 曾梓健

myTest/pom.xml

@@ -20,17 +20,6 @@
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-web</artifactId>
-			<exclusions>
-				<exclusion>
-					<!--移除spring-boot-starter-web中的tomcat依赖-->
-					<groupId>org.springframework.boot</groupId>
-					<artifactId>spring-boot-starter-tomcat</artifactId>
-				</exclusion>
-			</exclusions>
-		</dependency>
-		<dependency>
-			<groupId>org.springframework.boot</groupId>
-			<artifactId>spring-boot-starter-jetty</artifactId>
 		</dependency>
 
 		<dependency>

springboot-dataaccess/.mvn/wrapper/maven-wrapper.jar

@@ -0,0 +1,2 @@
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.8.6/apache-maven-3.8.6-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar

springboot-dataaccess/.mvn/wrapper/maven-wrapper.properties

@@ -0,0 +1,50 @@
+<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>2.2.9.RELEASE</version>
+		<relativePath/> <!-- lookup parent from repository -->
+	</parent>
+	<groupId>com.hand</groupId>
+	<artifactId>springboot-dataaccess</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<name>springboot-dataaccess</name>
+	<description>springboot-dataaccess</description>
+	<properties>
+		<java.version>8</java.version>
+	</properties>
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>mysql</groupId>
+			<artifactId>mysql-connector-java</artifactId>
+			<scope>runtime</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-jdbc</artifactId>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>

springboot-dataaccess/pom.xml

@@ -0,0 +1,13 @@
+package com.hand.springbootdataaccess;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class SpringbootDataaccessApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(SpringbootDataaccessApplication.class, args);
+	}
+
+}

springboot-dataaccess/src/main/java/com/hand/springbootdataaccess/SpringbootDataaccessApplication.java

@@ -0,0 +1,4 @@
+spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
+spring.datasource.url=jdbc:mysql://127.0.0.1:3306/sqlfather?useUnicode=true&characterEncoding=utf-8&useSSL=false&useInformationSchema=true
+spring.datasource.username=root
+spring.datasource.password=123456

springboot-dataaccess/src/main/resources/application.properties

@@ -0,0 +1,33 @@
+package com.hand.springbootdataaccess;
+
+import java.sql.Connection;
+import java.sql.DatabaseMetaData;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Statement;
+import javax.sql.DataSource;
+
+import org.junit.jupiter.api.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@SpringBootTest
+@RunWith(SpringRunner.class)
+class SpringbootDataaccessApplicationTests {
+
+	@Autowired
+	private DataSource dataSource;
+	@Test
+	void contextLoads() throws SQLException {
+		Connection connection = dataSource.getConnection();
+		System.out.println("connection:------" + connection);
+		Statement statement = connection.createStatement();
+		ResultSet resultSet = statement.executeQuery("select * from report");
+		resultSet.next();
+		System.out.println(resultSet.getString(2));
+
+	}
+
+}