1. Get the jar package, which is the maven method here. The specific contents are:
<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>6.0.4</version> </dependency> <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.4.4</version> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-context --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>4.3.10.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-core --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>4.3.10.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-beans --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>4.3.10.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.3.1</version> </dependency> <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-dbcp2 --> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-dbcp2</artifactId> <version>2.1.1</version> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>4.3.10.RELEASE</version> </dependency>
Then edit the po info:
package com.duduli.li;
public class Cp {
private int id;
private String chddm;
private String bh;
private String zh;
private String sl;
private String zt;
private String gh;
private String xssj;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getChddm() {
return chddm;
}
public void setChddm(String chddm) {
this.chddm = chddm;
}
public String getBh() {
return bh;
}
public void setBh(String bh) {
this.bh = bh;
}
public String getZh() {
return zh;
}
public void setZh(String zh) {
this.zh = zh;
}
public String getSl() {
return sl;
}
public void setSl(String sl) {
this.sl = sl;
}
public String getZt() {
return zt;
}
public void setZt(String zt) {
this.zt = zt;
}
public String getGh() {
return gh;
}
public void setGh(String gh) {
this.gh = gh;
}
/**
* @return the xssj
*/
public String getXssj() {
return xssj;
}
/**
* @param xssj the xssj to set
*/
public void setXssj(String xssj) {
this.xssj = xssj;
}
/* (non-Javadoc)
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
return "Cp [id=" + id + ", chddm=" + chddm + ", bh=" + bh + ", zh=" + zh + ", sl=" + sl + ", zt=" + zt + ", gh="
+ gh + ", xssj=" + xssj + "]";
}
}
The following is the configuration of spring:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
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-2.5.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd">
<bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url"
value="jdbc:mysql://localhost:3306/hnfc?serverTimezone=UTC" />
<property name="username" value="root" />
<property name="password" value="xxxxxx" />
<!-- Connection initial value, the default value of the initial value of the number of connections created when the connection pool starts is 0 -->
<property name="initialSize" value="3" />
<!-- Minimum idle value. When the number of idle connections is less than the threshold, the connection pool will pre-apply for some connections, so as not to apply for too late when the flood peaks. The default value is 0 -->
<property name="minIdle" value="3" />
<!-- The maximum idle value. After a peak time, the connection pool can slowly release some of the unused connections until it is reduced to maxIdle. The default value of 0 is 8 -->
<property name="maxIdle" value="5" />
<!-- The maximum value of the connection pool, the maximum number of connections that can be allocated from the pool at the same time, when 0 is unlimited, the default value is 8 -->
<property name="maxTotal" value="15" />
</bean>
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
</bean>
<!-- This configuration is to solve the mapping of mapper interface when spring is running -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.duduli.li" />
</bean>
<context:annotation-config></context:annotation-config>
<context:component-scan base-package="com.duduli.li"></context:component-scan>
</beans>
Note here
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.duduli.li" /> </bean>
Next the interface of mybatis
@Repository("mapper")
public interface CPmapper {
@Select("select * from cp")
public List<Cp> getAllCP();
@Select("select id from cp")
public List<Integer> getAllId();
}
Next, the method interface
public interface CPservice {
public List<Cp> getAllCP();
public void getAllId();
}
Method implementation class:
@Component("cpservice")
public class CPserviceImpl implements CPservice {
@Autowired
@Qualifier("mapper")
private CPmapper cpmapper;
public List<Cp> getAllCP() {
// TODO Auto-generated method stub
for(Cp c:cpmapper.getAllCP()) {
System.out.println(c.toString());
}
return cpmapper.getAllCP();
}
public void getAllId() {
for(int i:cpmapper.getAllId()) {
System.out.println(i);
}
}
}
And finally the test class:
public static void main(String[] args) {
// TODO Auto-generated method stub
String[] files = {"com/duduli/li/springContext.xml" };
ApplicationContext context = new ClassPathXmlApplicationContext(files);
// UserService userService = (UserService) context.getBean("userService");
CPservice cpservice = (CPservice) context.getBean("cpservice");
// cpservice.getAllCP();
cpservice.getAllId();
}