下面开始项目的搭建
使用 Java EE – Eclipse 新建一 Dynamic Web Project
Target Runtime 选 Apache Tomcat 7.0(不要选 Apache Tomcat 6.0，7 以后才支持 Servlet 3.0)。
点击 Next > 按钮。
默认的 Source folders 配置如下：
ps:可以根据需求自己编辑比如
删除默认的，增加以下四个并修改默认的输出目录为 WebContent/WEB-INF/classes:
src/main/java
src/main/resources
src/test/java
src/test/resources
点击Next
Configure web module settings 对话框勾选 Generate web.xml deployment descriptor 选项：
然后点击finish完成
这几个包或许是需要最少的包
——————————————————-
3.下面开始部署
把所需要的jar包ctrl c ctrl v粘贴到lib目录
然后 添加进来
添加完的效果
然后新建两个类
一个实体类—————–HelloWorldSpringBean
一个测试类(包含main函数)———-HelloWorldSpring
新建配置文件 ———–helloWorldSpring.xml
具体如下:
HelloWorldSpringBean
package chapter2.HelloWorldSpring;
public class HelloWorldSpringBean {
private String hello;
public String getHello(){
return hello;
}
public void setHello(String hello){
this.hello=hello;
}
public void show(){
System.out.println("--message--"+getHello());
}
}
一个属性,
以及对应的get set方法
还有执行方法
HelloWorldSpring
package chapter2.HelloWorldSpring;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.FileSystemXmlApplicationContext;
public class HelloWorldSpring {
public static void main(String[] args) {
// TODO Auto-generated method stub
ApplicationContext ctx = new FileSystemXmlApplicationContext("src/helloWorldSpring.xml");
HelloWorldSpringBean helloWorldSpringBean = (HelloWorldSpringBean)ctx.getBean("myHelloWorld");
helloWorldSpringBean.show();
}
}
helloWorldSpring.xml
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd"> <beans> <bean id="myHelloWorld" class="chapter2.HelloWorldSpring"> <property name="hello"> <value>hello World spring!</value> </property> </bean> </beans>
HelloWorldSpring直接run as application 执行,报错
Exception in thread "main" org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line 2 in XML document from file [D:/ProgramData/Workspaces/eclipse/chapter2/src/helloWorldSpring.xml] is invalid; nested exception is org.xml.sax.SAXParseException; lineNumber: 2; columnNumber: 6; 不允许有匹配 "[xX][mM][lL]" 的处理指令目标。
配置文件开头不能有其他内容空格或者空行等,如果有的话就会报错
XML没有以<?xml version="1.0" encoding="UTF-8"?> 开头，也就是说第一个字符必须是<?xml……
解决方法：
规范的XML格式、
<?xml version="1.0" encoding="UTF-8"?> 必须是XML文件的第一个元素且前面不能空格。
修改后继续报错,错误内容为
十一月 10, 2015 5:50:10 下午 org.springframework.context.support.FileSystemXmlApplicationContext refresh 警告: Exception encountered during context initialization - cancelling refresh attempt org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [chapter2.HelloWorldSpring] for bean with name 'myHelloWorld' defined in file [D:/ProgramData/Workspaces/eclipse/chapter2/src/helloWorldSpring.xml]; nested exception is java.lang.ClassNotFoundException: chapter2.HelloWorldSpring at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1351) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineTargetType(AbstractAutowireCapableBeanFactory.java:628) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:597) at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1444) at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:974) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:752) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:835) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:537) at org.springframework.context.support.FileSystemXmlApplicationContext.<init>(FileSystemXmlApplicationContext.java:140) at org.springframework.context.support.FileSystemXmlApplicationContext.<init>(FileSystemXmlApplicationContext.java:84) at chapter2.HelloWorldSpring.HelloWorldSpring.main(HelloWorldSpring.java:12) Caused by: java.lang.ClassNotFoundException: chapter2.HelloWorldSpring
类找不到,发现是配置文件中的class中写错了,没有写好类名
class="chapter2.HelloWorldSpring.HelloWorldSpringBean">修改为这个重新运行,可以打开
最终的代码为:
package chapter2.HelloWorldSpring;
public class HelloWorldSpringBean {
private String hello;
public String getHello(){
return hello;
}
public void setHello(String hello){
this.hello=hello;
}
public void show(){
System.out.println("--message--"+getHello());
}
}
---------------------------------------------------------
package chapter2.HelloWorldSpring;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.FileSystemXmlApplicationContext;
import chapter2.HelloWorldSpring.HelloWorldSpringBean;
public class HelloWorldSpring {
public static void main(String[] args) {
// TODO Auto-generated method stub
ApplicationContext ctx = new FileSystemXmlApplicationContext("src/helloWorldSpring.xml");
HelloWorldSpringBean helloWorldSpringBean = (HelloWorldSpringBean)ctx.getBean("myHelloWorld");
helloWorldSpringBean.show();
}
}
-----------------------------------------------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<bean id="myHelloWorld" class="chapter2.HelloWorldSpring.HelloWorldSpringBean">
<property name="hello">
<value>hello World spring!</value>
</property>
</bean>
</beans>
原创文章，作者：ItWorker，如若转载，请注明出处：https://blog.ytso.com/15652.html