org.springframework.jdbc.core.SimpleJdbcInsert類是一個多線程,可重用的對象,為將數據插入表提供了易用的功能。它提供元數據處理以簡化構建基本insert語句所需的代碼。實際的插入是使用Spring的JdbcTemplate來處理的。
使用到的 Student 表的結構如下 -
CREATE TABLE Student( ID INT NOT NULL AUTO_INCREMENT, NAME VARCHAR(20) NOT NULL, AGE INT NOT NULL, PRIMARY KEY (ID) );
類的聲明
以下是org.springframework.jdbc.core.SimpleJdbcInsert接口的聲明 -
public class SimpleJdbcInsert extends AbstractJdbcInsert implements SimpleJdbcInsertOperations
以下示例將展示使用spring jdbc進行插入查詢。使用SimpleJdbcInsert對象向Student 表中插入一條記錄。
語法
jdbcInsert = new SimpleJdbcInsert(dataSource).withTableName("Student"); Map<String,Object> parameters = new HashMap<String,Object>(); parameters.put("name", name); parameters.put("age", age); jdbcInsert.execute(parameters);
在上代碼中,
- jdbcInsert -
SimpleJdbcInsert對象用來執行向student表中插入記錄。 - jdbcTemplateObject -
NamedParameterJdbcTemplate對象來更新數據庫中的Student對象。
實例項目
要了解上述與Spring JDBC相關的概念,下面我們編寫一個使用SimpleJdbcInsert來向表中插入一個Student對象。打開Eclipse IDE,並按照以下步驟創建一個Spring應用程序,這里創建一個名稱為:SimpleJdbcInsert 的項目。
步驟說明
- 參考第一個Spring JDBC項目來創建一個Maven項目 - http://www.yiibai.com/springjdbc/first_application.html
- 更新bean配置並運行應用程序。
完整的項目結構如下所示 -

以下是Maven配置文件:pom.xml的代碼內容:
<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.yiibai</groupId> <artifactId>SimpleJdbcInsert</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>SimpleJdbcInsert</name> <url>http://maven.apache.org</url> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.40</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>4.1.0.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>4.1.4.RELEASE</version> </dependency> </dependencies> </project>
以下是數據訪問對象接口文件:StudentDAO.java的內容:
package com.yiibai; import java.util.List; import javax.sql.DataSource; public interface StudentDAO { /** * This is the method to be used to initialize database resources ie. * connection. */ public void setDataSource(DataSource ds); /** * This is the method to be used to create a record in the Student table. */ public void create(String name, Integer age); /** * This is the method to be used to list down all the records from the * Student table. */ public List<Student> listStudents(); }
以下是文件:Student.java的代碼內容:
package com.yiibai; 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; } }
以下是文件:StudentMapper.java的代碼內容:
package com.yiibai; 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; } }
實現類StudentJDBCTemplate.java實現了定義的DAO接口 - StudentDAO.java,以下是文件:StudentJDBCTemplate.java的代碼內容:
package com.yiibai; import java.util.HashMap; import java.util.List; import java.util.Map; import javax.sql.DataSource; import org.springframework.jdbc.core.JdbcTemplate; import org.springframework.jdbc.core.simple.SimpleJdbcInsert; public class StudentJDBCTemplate implements StudentDAO { private DataSource dataSource; private JdbcTemplate jdbcTemplateObject; SimpleJdbcInsert jdbcInsert; public void setDataSource(DataSource dataSource) { this.dataSource = dataSource; this.jdbcTemplateObject = new JdbcTemplate(dataSource); this.jdbcInsert = new SimpleJdbcInsert(dataSource).withTableName("Student"); } public void create(String name, Integer age) { Map<String, Object> parameters = new HashMap<String, Object>(); parameters.put("name", name); parameters.put("age", age); jdbcInsert.execute(parameters); System.out.println("Created Record Name = " + name + " Age = " + age); return; } public List<Student> listStudents() { String SQL = "select * from Student"; List<Student> students = jdbcTemplateObject.query(SQL, new StudentMapper()); return students; } }
以下是文件:MainApp.java的代碼內容:
package com.yiibai; import java.util.ArrayList; import java.util.List; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import com.yiibai.StudentJDBCTemplate; public class MainApp { public static void main(String[] args) { ApplicationContext context = new ClassPathXmlApplicationContext("application-beans.xml"); StudentJDBCTemplate studentJDBCTemplate = (StudentJDBCTemplate) context.getBean("studentJDBCTemplate"); System.out.println("------Records Creation--------"); studentJDBCTemplate.create("Maxsu", 21); studentJDBCTemplate.create("Curry", 22); studentJDBCTemplate.create("Suzend", 23); 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()); } } }
以下是文件:application-beans.xml的代碼內容:
<?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="com.mysql.jdbc.Driver" /> <property name="url" value="jdbc:mysql://localhost:3306/test?characterEncoding=utf8&useSSL=true" /> <property name="username" value="root" /> <property name="password" value="123456" /> </bean> <!-- Definition for studentJDBCTemplate bean --> <bean id="studentJDBCTemplate" class="com.yiibai.StudentJDBCTemplate"> <property name="dataSource" ref="dataSource" /> </bean> </beans>
注意: application-beans.xml 文件的位置是:{workspace}/fistapp/src/main/java 目錄,如果放置錯了,程序可能會因為找不到此配置文件而出錯。
完成創建源代碼和bean和數據庫連接信息的文件配置后,運行應用程序。這里先簡單說明一下運行的步驟,在項目名稱(SimpleJdbcInsert)上點擊右鍵,在彈出的菜單中選擇:【Run As】-> 【Maven test】
在運行測試成功后,應該會輸出類似以下內容(含有 BUILD SUCCESS 的信息) 。
接下來,點擊類文件:MainApp.java 選擇【Run As】->【Java Application】,如果應用程序一切正常,這將打印以下結果:
------Records Creation--------
Created Record Name = Maxsu Age = 21
Created Record Name = Curry Age = 22
Created Record Name = Suzend Age = 23
------Listing Multiple Records--------
ID : 1, Name : Maxsu, Age : 21
ID : 2, Name : Curry, Age : 22
ID : 3, Name : Suzend, Age : 23a
