发表于： 2018-03-20 23:46:17
1 544
一。今天把包含数据库的代码部署到服务器上：
首先确保在本地运行没有问题
在本地运行没问题之后，通过navicat连接阿里云的mysql数据库，建立一个新的数据库，数据表，和本地重名。
表里面的数据相同。
打包的时候，出现了问题，打完包大小才3.2K。放在阿里云上运行也不成功。
然后找了个插件，加入IDEA的pom.xml文件里
打包不成功有可能缺少一个插件
把以下代码放入POM.xml文件就可以了
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>2.4.1</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>cn.summerwaves.main.MainApp</mainClass>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
红色字体改成类名，右键copy reference
继续clean package就可以啦。现在本地的命令行试一下
图，妥妥的。
然后上传到阿里云，运行，成功了。输入java -jar JdbcTest-1.0-SNAPSHOT-shaded.jar
（顺便还练习了几个linux命令）
二。重新在网上找了个教程，试了一下mybatis的多表查询，首先在命令行里试了一下
然后用java做，IDEA架构图为：
package com.dong.model;
public class Order {
private String id;
private String number;
private int price;
private Person person;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getNumber() {
return number;
}
public void setNumber(String number) {
this.number = number;
}
public int getPrice() {
return price;
}
public void setPrice(int price) {
this.price = price;
}
public Person getPerson() {
return person;
}
public void setPerson(Person person) {
this.person = person;
}
@Override
public String toString() {
return "{id: " + id + ",number: " + number + ",price: " + price + "}";
}
}
package com.dong.model;
public class Person {
private String id;
private String name;
private String address;
private String tel;
private List<Order> orders;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getTel() {
return tel;
}
public void setTel(String tel) {
this.tel = tel;
}
public List<Order> getOrders() {
return orders;
}
public void setOrders(List<Order> orders) {
this.orders = orders;
}
@Override
public String toString() {
return "{id: " + id + ",name: " + name + ",address: " + address + ",tel: " + tel + "}";
}
}
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<typeAliases>
<typeAlias type="com.dong.model.Person" alias="Person"/>
<typeAlias type="com.dong.model.Order" alias="Order"/>
</typeAliases>
<environments default="development">
<environment id="development">
<transactionManager type="JDBC" />
<dataSource type="POOLED">
<property name="driver" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/test" />
<property name="username" value="root" />
<property name="password" value="1234" />
</dataSource>
</environment>
</environments>
<mappers>
<!-- 映射文件的位置 -->
<mapper resource="Person.xml" />
<mapper resource="Order.xml" />
</mappers>
</configuration>
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.dong.model.Order">
<resultMap type="Order" id="orderBean">
<id column="orderId" property="id"/>
<result column="orderNumber" property="number"/>
<result column="orderPrice" property="price"/>
<!-- 多对一的关系 -->
<!-- property: 指的是属性的值, javaType：指的是属性的类型-->
<association property="person" javaType="Person">
<id column="personId" property="id"/>
<result column="personName" property="name"/>
<result column="personAddress" property="address"/>
<result column="personTel" property="tel"/>
</association>
</resultMap>
<!-- 根据id查询Order, 关联将Person查询出来 -->
<select id="selectOrderById" parameterType="string" resultMap="orderBean">
select p.*, o.* from person p, orders o where p.personId = o.pid and o.orderId = #{id}
</select>
</mapper>
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.dong.model.Person">
<resultMap type="Person" id="personBean">
<id column="personId" property="id"/>
<result column="personName" property="name"/>
<result column="personAddress" property="address"/>
<result column="personTel" property="tel"/>
<!-- 一对多的关系 -->
<!-- property: 指的是集合属性的值, ofType：指的是集合中元素的类型 -->
<collection property="orders" ofType="Order">
<id column="orderId" property="id"/>
<result column="orderNumber" property="number"/>
<result column="orderPrice" property="price"/>
</collection>
</resultMap>
<!-- 根据id查询Person, 关联将Orders查询出来 -->
<select id="selectPersonById" parameterType="string" resultMap="personBean">
select p.*, o.* from person p, orders o where p.personId = o.pid and p.personId = #{id}
</select>
</mapper>
public class POTest {
private SqlSessionFactory ssf;
@Before
public void initSF() throws Exception {
String resource = "mybatis-config.xml";
InputStream inputStream = Resources.getResourceAsStream(resource);
ssf = new SqlSessionFactoryBuilder().build(inputStream);
}
@Test
//一对多关联查询
public void selectPersonById()throws Exception{
SqlSession session = ssf.openSession();
Person person = session.selectOne("com.dong.model.Person.selectPersonById", "001");
System.out.println(person.getOrders());
}
@Test
//多对一关联查询
public void selectOrderById()throws Exception{
SqlSession session = ssf.openSession();
Order order = session.selectOne("com.dong.model.Order.selectOrderById", "O_00001");
System.out.println(order.getPerson().getName());
}
}
运行，成功：
[{id: o_00001,number: 00001,price: 100}, {id: o_00002,number: 00002,price: 200}]
Jack
Process finished with exit code 0
明天的计划：任务一这样就复习完了，明天复习任务二
遇到的问题：暂无
今天的收获：在服务器部署了代码
java任务二开始时间：2018.01.25
预计demo时间：2018.02.12
可能有延期风险，原因是：json看不懂，控制器的逻辑看不懂，所以又回看了java语法
禅道链接地址：http://task.ptteng.com/zentao/project-task-501.html
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