Spring读取配置文件的几种方式

  1 import java.io.FileInputStream;

  2 import java.io.FileNotFoundException;

  3 import java.io.FileReader;

  4 import java.io.IOException;

  5 import java.io.Reader;

  6 import java.util.Properties;

  7 

  8 import org.junit.Test;

  9 import org.springframework.core.io.ClassPathResource;

 10 import org.springframework.core.io.FileSystemResource;

 11 import org.springframework.core.io.Resource;

 12 

 13 /**

 14  * BeanFactory只有依赖注入功能没有AOP功能, ApplicationContext继承自BeanFactory有AOP功能

 15  */

 16 public class GetBeanFactory {

 17     /**

 18      * 加载项目内的配置文件，读取classPath之下的文件

 19      */

 20     public void test01() {

 21         Resource resource = new ClassPathResource("applicationContext.xml");

 22         BeanFactory bf = new XmlBeanFactory(resource);

 23         StudentAction studentService = (StudentAction) bf

 24                 .getBean("StudentAction");

 25         System.out.println(studentService);

 26     }

 27 

 28     /**

 29      * 加载项目外的配置文件,File读取C盘下的文件

 30      */

 31     public void test02() {

 32         Resource resource = new FileSystemResource("C:/applicationContext.xml");

 33         BeanFactory beanFactory = new XmlBeanFactory(resource);

 34         StudentAction studentAction = (StudentAction) beanFactory

 35                 .getBean("studentAction");

 36         System.out.println(studentAction);

 37     }

 38 

 39     /**

 40      * 读取Tomcat中的application配置文件, 必须导入Spring3-Web.jar包

 41      */

 42     public void test03() {

 43         /*

 44          * 将下面的代码必须放到jsp页面里面执行 <% org.springframework.core.io.Resource

 45          * resource=null; org.springframework.beans.factory.BeanFactory

 46          * beanFactory=null; resource=new

 47          * org.springframework.web.context.support

 48          * .ServletContextResource(application

 49          * ,"/WEB-INF/classes/applicationContext.xml"); beanFactory=new

 50          * org.springframework.beans.factory.xml.XmlBeanFactory(resource);

 51          * System.out.println(beanFactory); %>

 52          */

 53     }

 54 

 55     /**

 56      * ApplicationContext继承自BeanFactory有AOP功能

 57      */

 58     public void test04() {

 59         ApplicationContext context = new ClassPathXmlApplicationContext(

 60                 "applicationContext.xml");

 61         StudentService studentService = (StudentService) context

 62                 .getBean("studentService");

 63         studentService.save(new Student("test", 22));

 64     }

 65 

 66     /**

 67      * ApplicationContext继承自BeanFactory有AOP功能

 68      */

 69     public void test05() {

 70         ApplicationContext context = new FileSystemXmlApplicationContext(

 71                 "C:/applicationContext.xml");

 72         System.out.println(context.getBeanDefinitionCount());// 定义bean的总数

 73     }

 74     /**

 75      * ApplicationContext继承自BeanFactory有AOP功能

 76      */

 77     public void test06() {

 78         String[] filepath = { "applicationContext.xml" };

 79         ApplicationContext factory = new ClassPathXmlApplicationContext(

 80                 filepath);

 81         StudentService studentService = (StudentService) factory

 82                 .getBean("studentService");

 83     }

 84     /**

 85      * 用Spring读取properties文件

 86      */

 87     @Test

 88     public void test07() throws Exception, Exception {

 89         Resource r = new ClassPathResource("ssh.properties");

 90         Properties p=new Properties();

 91         p.load(new FileInputStream(r.getFile()));

 92         System.out.println(p.get("studentDao"));

 93     }

 94     

 95     @Test

 96     public void test08() throws Exception, Exception {

 97         Resource r = new ClassPathResource("a.txt");

 98     }

 99 

100 }