SSM5【Spring：Spring JdbcTemplate】
阿新 • • 發佈：2021-07-18
1 <?xml version="1.0" encoding="UTF-8"?> 2 <project xmlns="http://maven.apache.org/POM/4.0.0" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 5 <modelVersion>4.0.0</modelVersion> 6 7 <groupId>com.haifei</groupId> 8 <artifactId>SSM5_spring_jdbc</artifactId> 9 <version>1.0-SNAPSHOT</version> 10 11 12 <dependencies> 13 <!--mysql資料庫驅動座標--> 14 <dependency> 15 <groupId>mysql</groupId> 16 <artifactId>mysql-connector-java</artifactId> 17 <version>5.1.32</version> 18 <scope>runtime</scope> 19 </dependency> 20 <!--c3p0資料庫連線池座標--> 21 <dependency> 22 <groupId>c3p0</groupId> 23 <artifactId>c3p0</artifactId> 24 <version>0.9.1.2</version> 25 </dependency> 26 <!--druid資料庫連線池座標--> 27 <dependency> 28 <groupId>com.alibaba</groupId> 29 <artifactId>druid</artifactId> 30 <version>1.1.10</version> 31 </dependency> 32 33 <!--spring座標--> 34 <dependency> 35 <groupId>org.springframework</groupId> 36 <artifactId>spring-context</artifactId> 37 <version>5.0.5.RELEASE</version> 38 </dependency> 39 <!--spring-test座標--> 40 <dependency> 41 <groupId>org.springframework</groupId> 42 <artifactId>spring-test</artifactId> 43 <version>5.0.5.RELEASE</version> 44 </dependency> 45 46 <!--junit單元測試座標--> 47 <dependency> 48 <groupId>junit</groupId> 49 <artifactId>junit</artifactId> 50 <version>4.12</version> 51 <scope>test</scope> 52 </dependency> 53 54 <!--spring-jdbc座標--> 55 <dependency> 56 <groupId>org.springframework</groupId> 57 <artifactId>spring-jdbc</artifactId> 58 <version>5.0.5.RELEASE</version> 59 </dependency> 60 <!--spring-tx座標--> 61 <dependency> 62 <groupId>org.springframework</groupId> 63 <artifactId>spring-tx</artifactId> 64 <version>5.0.5.RELEASE</version> 65 </dependency> 66 </dependencies> 67 68 69 <build> 70 <plugins> 71 <!--jdk編譯外掛--> 72 <plugin> 73 <groupId>org.apache.maven.plugins</groupId> 74 <artifactId>maven-compiler-plugin</artifactId> 75 <version>3.1</version> 76 <configuration> 77 <target>1.8</target> 78 <source>1.8</source> 79 <encoding>UTF-8</encoding> <!--防止sout內部輸出中文亂碼--> 80 </configuration> 81 </plugin> 82 <!--tomcat7外掛--> 83 <plugin> 84 <groupId>org.apache.tomcat.maven</groupId> 85 <artifactId>tomcat7-maven-plugin</artifactId> 86 <version>2.1</version> 87 <configuration> 88 <port>8080</port> 89 <path>/ssm4</path> 90 <uriEncoding>UTF-8</uriEncoding> <!--防止get請求url中中文引數亂碼--> 91 </configuration> 92 </plugin> 93 </plugins> 94 </build> 95 96 97 </project>
1 package com.haifei.domain; 2 3 public class Account { 4 5 private String name; 6 private double money; 7 8 public String getName() { 9 return name; 10 } 11 12 public void setName(String name) { 13 this.name = name; 14 } 15 16 public double getMoney() { 17 return money; 18 } 19 20 public void setMoney(double money) { 21 this.money = money; 22 } 23 24 @Override 25 public String toString() { 26 return "Account{" + 27 "name='" + name + '\'' + 28 ", money=" + money + 29 '}'; 30 } 31 }
1 package com.haifei.test; 2 3 import com.mchange.v2.c3p0.ComboPooledDataSource; 4 import org.junit.Test; 5 import org.springframework.context.ApplicationContext; 6 import org.springframework.context.support.ClassPathXmlApplicationContext; 7 import org.springframework.jdbc.core.JdbcTemplate; 8 9 import java.beans.PropertyVetoException; 10 11 /** 12 * 使用juint進行測試 13 */ 14 public class JDBCTemplateTest { 15 16 17 /** 18 * JDBCTemplate開發步驟 19 * 在maven配置檔案pom.xml中匯入spring-jdbc和spring-tx座標 20 * @throws PropertyVetoException 21 */ 22 @Test 23 public void test1() throws PropertyVetoException { 24 //建立資料來源 25 ComboPooledDataSource dataSource = new ComboPooledDataSource(); 26 dataSource.setDriverClass("com.mysql.jdbc.Driver"); 27 dataSource.setJdbcUrl("jdbc:mysql://localhost:3306/hm_ssm"); 28 dataSource.setUser("root"); 29 dataSource.setPassword("root"); 30 31 //建立模板物件 32 JdbcTemplate template = new JdbcTemplate(); 33 //設定資料來源 34 template.setDataSource(dataSource); 35 36 //執行操作（查詢用template.query，增刪改用template.query） 37 String sql = "insert into account (name, money) values (?,?);"; 38 int row = template.update(sql, "tom", 5000); 39 System.out.println(row); //1 40 } 41 42 43 /** 44 * Spring 產生 JDBCTemplate物件 45 * 46 * 可以將JdbcTemplate的建立權交給Spring， 47 * 將資料來源DataSource的建立權也交給Spring， 48 * 在Spring容器內部將資料來源DataSource注入到JdbcTemplate模版物件中 49 * 50 * 在spring配置檔案applicationContext.xml中載入外部的properties檔案、配置資料來源、配置spring jdbcTemplate 51 */ 52 @Test 53 public void test2(){ 54 ApplicationContext app = new ClassPathXmlApplicationContext("applicationContext.xml"); 55 JdbcTemplate template = app.getBean(JdbcTemplate.class); //從spring容器中獲得JdbcTemplate進行新增操作 56 String sql = "insert into account (name, money) values (?,?);"; 57 int row = template.update(sql, "sam", 12000); 58 System.out.println(row); //1 59 } 60 61 62 }
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xmlns:context="http://www.springframework.org/schema/context" 5 xsi:schemaLocation=" 6 http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd 7 http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> 8 <!--配置contest名稱空間及其約束--> 9 10 11 <!--載入外部的properties檔案--> 12 <context:property-placeholder location="classpath:jdbc.properties"/> 13 <!--配置資料來源（資料庫連線池）--> 14 <bean id="dataSource_c3p0" class="com.mchange.v2.c3p0.ComboPooledDataSource"> 15 <property name="driverClass" value="${jdbc.driver}"></property> 16 <property name="jdbcUrl" value="${jdbc.url}"></property> 17 <property name="user" value="${jdbc.username}"></property> 18 <property name="password" value="${jdbc.password}"></property> 19 </bean> 20 <bean id="dataSource_druid" class="com.alibaba.druid.pool.DruidDataSource"> 21 <property name="driverClassName" value="${jdbc.driver}"></property> 22 <property name="url" value="${jdbc.url}"></property> 23 <property name="username" value="${jdbc.username}"></property> 24 <property name="password" value="${jdbc.password}"></property> 25 </bean> 26 <!--配置spring jdbcTemplate--> 27 <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate"> 28 <property name="dataSource" ref="dataSource_c3p0"/> <!--資料來源可選c3p0和druid--> 29 </bean> 30 31 32 </beans>
1 package com.haifei.test; 2 3 import com.haifei.domain.Account; 4 import org.junit.Test; 5 import org.junit.runner.RunWith; 6 import org.springframework.beans.factory.annotation.Autowired; 7 import org.springframework.jdbc.core.BeanPropertyRowMapper; 8 import org.springframework.jdbc.core.JdbcTemplate; 9 import org.springframework.test.context.ContextConfiguration; 10 import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; 11 12 import java.util.List; 13 14 /** 15 * 使用spring-test整合juint進行測試 16 * CRUD：增加(Create)、檢索(Retrieve)、更新(Update)和刪除(Delete) 17 * tips:要導航到抽象方法/抽象類/介面的【實現】，選中其，然後按【Ctrl+Alt+B】 18 */ 19 @RunWith(SpringJUnit4ClassRunner.class) 20 @ContextConfiguration("classpath:applicationContext.xml") 21 public class JDBCTemplateCRUDTest { 22 23 @Autowired //測誰注誰 24 private JdbcTemplate template; 25 26 @Test 27 public void testUpdate(){ 28 String sql = "update account set money=? where name=?;"; 29 template.update(sql, 10000,"tom"); 30 } 31 32 @Test 33 public void testDelete(){ 34 String sql = "delete from account where name=?;"; 35 template.update(sql, "tom"); 36 } 37 38 @Test 39 public void testInsert(){ 40 String sql = "insert into account (name, money) values (?,?);"; 41 template.update(sql, "tom", 20000); 42 } 43 44 @Test 45 public void testQueryAll(){ 46 String sql = "select * from account;"; 47 List<Account> accountList = template.query(sql, new BeanPropertyRowMapper<Account>(Account.class)); 48 System.out.println(accountList); //[Account{name='sam', money=12000.0}, Account{name='tom', money=20000.0}] 49 } 50 51 @Test 52 public void testQueryOne(){ 53 String sql = "select * from account where name=?;"; 54 Account account = template.queryForObject(sql, new BeanPropertyRowMapper<Account>(Account.class), "tom"); 55 System.out.println(account); //Account{name='tom', money=20000.0} 56 } 57 58 @Test 59 public void testQueryCount(){ //聚合查詢 60 String sql = "select count(*) from account;"; 61 Long count = template.queryForObject(sql, Long.class); 62 System.out.println(count); //2 63 } 64 65 66 }