spring framwor操作数据库示例spring-jdbc

示例代码：http://download.csdn.net/detail/u010476739/9922735

工具：maven、spring framework、postgresql

1.准备数据库，使用postgresql

CREATE TABLE Student(   ID  SERIAL PRIMARY Key,   NAME VARCHAR(20) NOT NULL,   AGE  INT NOT NULL); 

2.新建项目，添加依赖

<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.jackletter</groupId>  <artifactId>spring-jdbc</artifactId>  <version>0.0.1-SNAPSHOT</version>  <name>this is name</name>  <description>this is desc</description>    <properties>  <spring.version>4.2.4.RELEASE</spring.version>  <postgresql.version>9.1-901.jdbc4</postgresql.version>  </properties>    <dependencies>         <!-- Spring Core -->        <!-- http://mvnrepository.com/artifact/org.springframework/spring-core -->        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-core</artifactId>            <version>${spring.version}</version>        </dependency>                 <!-- Spring Context -->        <!-- http://mvnrepository.com/artifact/org.springframework/spring-context -->        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-context</artifactId>            <version>${spring.version}</version>        </dependency>                <!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc --><dependency>    <groupId>org.springframework</groupId>    <artifactId>spring-jdbc</artifactId>    <version>${spring.version}</version></dependency><dependency><groupId>postgresql</groupId><artifactId>postgresql</artifactId><version>${postgresql.version}</version></dependency>             </dependencies></project>

3.spring配置（applicationContext.xml）

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://www.springframework.org/schema/beans    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd "><!-- Initialization for data source --><bean id="dataSource"class="org.springframework.jdbc.datasource.DriverManagerDataSource"><property name="driverClassName" value="org.postgresql.Driver" /><property name="url" value="jdbc:postgresql://localhost:5432/Demo" /><property name="username" value="postgres" /><property name="password" value="huqingjie123" /></bean><!-- Definition for studentJDBCTemplate bean --><bean id="studentJDBCTemplate" class="bean.StudentJDBCTemplate"><property name="dataSource" ref="dataSource" /></bean></beans>

4.代码

Student

package bean;public class Student {private Integer age;private String name;private Integer id;public void setAge(Integer age) {this.age = age;}public Integer getAge() {return age;}public void setName(String name) {this.name = name;}public String getName() {return name;}public void setId(Integer id) {this.id = id;}public Integer getId() {return id;}}

StudentDAO

package bean;import java.util.List;import javax.sql.DataSource;public interface StudentDAO {public void setDataSource(DataSource dataSource);public void create(String name, Integer age);public Student getStudent(Integer id);public List<Student> listStudents();public void delete(Integer id);public void update(Integer id, Integer age);}

StudentJDBCTemplate

package bean;import java.util.List;import javax.sql.DataSource;import org.springframework.jdbc.core.JdbcTemplate;public class StudentJDBCTemplate implements StudentDAO {private DataSource dataSource;private JdbcTemplate jdbcTemplateObject;public void setDataSource(DataSource dataSource) {this.dataSource = dataSource;this.jdbcTemplateObject = new JdbcTemplate(dataSource);}public void create(String name, Integer age) {String SQL = "insert into Student (name, age) values (?, ?)";jdbcTemplateObject.update(SQL, name, age);System.out.println("Created Record Name = " + name + " Age = " + age);return;}public Student getStudent(Integer id) {String SQL = "select * from Student where id = ?";Student student = jdbcTemplateObject.queryForObject(SQL, new Object[] { id }, new StudentMapper());return student;}public List<Student> listStudents() {String SQL = "select * from Student";List<Student> students = jdbcTemplateObject.query(SQL, new StudentMapper());return students;}public void delete(Integer id) {String SQL = "delete from Student where id = ?";jdbcTemplateObject.update(SQL, id);System.out.println("Deleted Record with ID = " + id);return;}public void update(Integer id, Integer age) {String SQL = "update Student set age = ? where id = ?";jdbcTemplateObject.update(SQL, age, id);System.out.println("Updated Record with ID = " + id);return;}}

StudentMapper

package bean;import java.sql.ResultSet;import java.sql.SQLException;import org.springframework.jdbc.core.RowMapper;public class StudentMapper implements RowMapper<Student> {public Student mapRow(ResultSet rs, int rowNum) throws SQLException {Student student = new Student();student.setId(rs.getInt("id"));student.setName(rs.getString("name"));student.setAge(rs.getInt("age"));return student;}}

App

package springjdbc;import java.util.List;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import bean.Student;import bean.StudentJDBCTemplate;public class App {public static void main(String[] args) {ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");StudentJDBCTemplate studentJDBCTemplate = (StudentJDBCTemplate) context.getBean("studentJDBCTemplate");System.out.println("------Records Creation--------");studentJDBCTemplate.create("Zara", 11);studentJDBCTemplate.create("Nuha", 2);studentJDBCTemplate.create("Ayan", 15);System.out.println("------Listing Multiple Records--------");List<Student> students = studentJDBCTemplate.listStudents();for (Student record : students) {System.out.print("ID : " + record.getId());System.out.print(", Name : " + record.getName());System.out.println(", Age : " + record.getAge());}System.out.println("----Updating Record with ID = 2 -----");studentJDBCTemplate.update(2, 20);System.out.println("----Listing Record with ID = 2 -----");Student student = studentJDBCTemplate.getStudent(2);System.out.print("ID : " + student.getId());System.out.print(", Name : " + student.getName());System.out.println(", Age : " + student.getAge());}}