# spring 整合 jdbc template(xml配置方式)
1、创建标准web maven工程,导入依赖
```xml
4.0.0
com.heibaiying
spring-jdbc
1.0-SNAPSHOT
5.1.3.RELEASE
org.springframework
spring-context
${spring-base-version}
org.springframework
spring-beans
${spring-base-version}
org.springframework
spring-core
${spring-base-version}
org.springframework
spring-web
${spring-base-version}
org.springframework
spring-webmvc
${spring-base-version}
javax.servlet
javax.servlet-api
4.0.1
provided
org.projectlombok
lombok
1.18.4
provided
org.springframework
spring-jdbc
${spring-base-version}
mysql
mysql-connector-java
8.0.13
junit
junit
4.12
test
org.springframework
spring-test
${spring-base-version}
test
com.oracle
ojdbc6
11.2.0.3.0
```
2、在web.xml 进行如下配置
```xml
springMvc
org.springframework.web.servlet.DispatcherServlet
contextConfigLocation
classpath:springApplication.xml
1
springMvc
/
```
3、在resources文件夹下新建数据库配置文件jdbc.properties
```properties
# mysql 数据库配置
mysql.driverClassName=com.mysql.jdbc.Driver
mysql.url=jdbc:mysql://localhost:3306/mysql
mysql.username=root
mysql.password=root
# oracle 数据库配置
oracle.driverClassName=oracle.jdbc.driver.OracleDriver
oracle.url=jdbc:oracle:thin:@//IP地址:端口号/数据库实例名
oracle.username=用户名
oracle.password=密码
```
4、在resources文件夹下创建springApplication.xml 配置文件
```xml
```
5、新建查询接口及其实现类,这里我查询的表是mysql和oracle中的字典表
```java
public interface MysqlDao {
List get();
}
```
```java
package com.heibaiying.dao;
import com.heibaiying.bean.Relation;
import com.heibaiying.dao.impl.MysqlDao;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.stereotype.Repository;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;
/**
* @author : heibaiying
* @description :
*/
@Repository
public class MysqlDaoImpl implements MysqlDao {
@Autowired
private JdbcTemplate jdbcTemplate;
/**
* 更多JDBC 的使用可以参考官方文档
* @see JdbcTemplate
*/
public List get() {
List relations = jdbcTemplate.query("select * from help_keyword where help_keyword_id = ? ", new Object[]{691},
new RowMapper() {
public Relation mapRow(ResultSet rs, int rowNum) throws SQLException {
Relation relation = new Relation();
relation.setId(rs.getString("help_keyword_id"));
relation.setName(rs.getString("name"));
return relation;
}
});
return relations;
}
}
```
```mysql
package com.heibaiying.dao.impl;
import com.heibaiying.bean.Flow;
import java.util.List;
/**
* @author : heibaiying
* @description :
*/
public interface OracleDao {
List get();
}
```
```java
package com.heibaiying.dao;
import com.heibaiying.bean.Flow;
import com.heibaiying.dao.impl.OracleDao;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.stereotype.Repository;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;
/**
* @author : heibaiying
* @description :
*/
@Repository
public class OracleDaoImpl implements OracleDao {
@Autowired
private JdbcTemplate jdbcTemplate;
/**
* 更多JDBC 的使用可以参考官方文档
* @see JdbcTemplate
*/
public List get() {
List flows = jdbcTemplate.query("select * from APEX_030200.WWV_FLOW_CALS where ID = ? ", new Object[]{217584603977429772L},
new RowMapper() {
public Flow mapRow(ResultSet rs, int rowNum) throws SQLException {
Flow flow = new Flow();
flow.setId(rs.getLong("ID"));
flow.setFlowId(rs.getLong("FLOW_ID"));
flow.setPlugId(rs.getLong("PLUG_ID"));
return flow;
}
});
return flows;
}
}
```
6.新建测试类进行测试
```java
package com.heibaiying.dao;
import com.heibaiying.bean.Relation;
import com.heibaiying.dao.impl.MysqlDao;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringRunner;
import java.util.List;
/**
* @author : heibaiying
* @description :
*/
@RunWith(SpringRunner.class)
@ContextConfiguration({"classpath:springApplication.xml"})
public class MysqlDaoTest {
@Autowired
private MysqlDao mysqlDao;
@Test
public void get() {
List relations = mysqlDao.get();
if (relations != null) {
for (Relation relation : relations) {
System.out.println(relation.getId() + " " + relation.getName());
}
}
}
}
```
```java
package com.heibaiying.dao;
import com.heibaiying.bean.Flow;
import com.heibaiying.dao.impl.OracleDao;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringRunner;
import java.util.List;
/**
* @author : heibaiying
* @description :
*/
@RunWith(SpringRunner.class)
@ContextConfiguration({"classpath:springApplication.xml"})
public class OracleDaoTest {
/*注入接口时: 如果接口有多个实现类 可以用这个注解指定具体的实现类*/
@Qualifier("oracleDaoImpl")
@Autowired
private OracleDao oracleDao;
@Test
public void get() {
List flows = oracleDao.get();
if (flows != null) {
for (Flow flow : flows) {
System.out.println(flow.getId() + " " + flow.getPlugId());
}
}
}
}
```