javaSpring使用maven初始搭建步驟java專案
阿新 • • 發佈：2018-12-11
1、在maven專案中修改pom.xml引入關於spring的依賴。
測試類App.class
<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.iflytek</groupId> <artifactId>firstSpring</artifactId> <version>0.0.1-SNAPSHOT</version> <dependencies> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>4.3.13.RELEASE</version> <!-- <exclusions> <exclusion> <groupId>commons-logging</groupId> <artifactId>commons-logging</artifactId> </exclusion> </exclusions> --> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>4.3.13.RELEASE</version> <scope>runtime</scope> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.17</version> </dependency> </dependencies> </project>
2、加入必須的配置檔案applicationContext.xml檔案
通過引入bean的方式，建立和初始化需要的物件<?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.xsd"> <!-- <bean id="..." class="..."> collaborators and configuration for this bean go here </bean> <bean id="..." class="..."> collaborators and configuration for this bean go here </bean> --> <!-- more bean definitions go here UserDao ud = new UserDao(); --> <bean id="ud" class="com.iflytek.dao.UserDao"></bean> <bean id="us" class="com.iflytek.service.UserService"> <property name="userDao" ref="ud"></property> </bean> </beans>
3、載入其他需要的配置檔案和依賴（如log4j.property和hibernate的dependency）
4、寫java程式碼進行測試
譬如以上配置的兩個bean中，分別配置了Userservice的物件us和UserDao的物件ud，在測試類中，只要UserService service = context.getBean("us", UserService.class);即可一獲得已經定義的UserService物件，在service中存在userDao的屬性，通過service物件呼叫getter方法獲得dao物件（因為到時私有的，所以要get特然獲得），即可使用dao類中的方法。
附簡單的測試程式碼
User類
package com.iflytek.domain;
public class User {
private int id;
private String name;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
public String toString() {
return "User [id=" + id + ", name=" + name + "]";
}
}package com.iflytek.service;
import com.iflytek.dao.UserDao;
public class UserService {
private UserDao userDao1;
public UserDao getUserDao() {
return userDao1;
}
public void setUserDao(UserDao userDao1) {
this.userDao1 = userDao1;
}
}UserDao類
package com.iflytek.dao;
import com.iflytek.domain.User;
public class UserDao {
public User getUserById(int i) {
User user = new User();
user.setId(10);
user.setName("zhangsan");
return user;
}
}
測試類App.class
package com.iflytek.test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.iflytek.domain.User;
import com.iflytek.service.UserService;
public class App {
public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
//把IOC容器中的us物件取出來
UserService service = context.getBean("us", UserService.class);
User user = service.getUserDao().getUserById(10);
System.out.println(user.getName());
}
}