Spring神一样存在的框架,帮助Java开发者巧妙快速的应对公司或企业的一个个变态的需求.这偏文章不谈原理,只论快速配置使用.
笔者所用开发工具是MyEclipse,使用了强大的Maven管理项目.废话不多语,开始....
** 1.创建项目**
![Uploading Snip20170531_4_284300.png . . .]
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** 2.添加Spring依赖(笔者使用的是4.1.0)**
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.1.0.RELEASE</version>
</dependency>
** 3.创建Java配置文件WebConfig**
具体注解的使用以及意义,读者自行查阅文档.
package demo.config;
import java.io.IOException;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.multipart.MultipartResolver;
import org.springframework.web.multipart.support.StandardServletMultipartResolver;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
@Configuration
@EnableWebMvc
@ComponentScan("demo")
public class WebConfig extends WebMvcConfigurerAdapter {
@Bean
public ViewResolver viewResolver(){
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/WEB-INF/views/");
resolver.setSuffix(".jsp");
resolver.setExposeContextBeansAsAttributes(true);
return resolver;
}
@Override
public void configureDefaultServletHandling(
DefaultServletHandlerConfigurer configurer) {
// TODO Auto-generated method stub
configurer.enable();
}
@Bean
public MultipartResolver multipartResolver() throws IOException{
return new StandardServletMultipartResolver();
}
}
** 4.创建RootConfig**
package demo.config;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.ComponentScan.Filter;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.FilterType;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
@Configuration
@ComponentScan(basePackages={"demo"},
excludeFilters={
@Filter(type=FilterType.ANNOTATION,value=EnableWebMvc.class)
})
public class RootConfig {
}
** 5.创建DispatcherServlet**
package demo.config;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
public class DispatcherServlet extends
AbstractAnnotationConfigDispatcherServletInitializer {
@Override
protected Class<?>[] getRootConfigClasses() {
// TODO Auto-generated method stub
return new Class<?>[] {RootConfig.class};
}
@Override
protected Class<?>[] getServletConfigClasses() {
// TODO Auto-generated method stub
return new Class<?>[] {WebConfig.class};
}
@Override
protected String[] getServletMappings() {
// TODO Auto-generated method stub
return new String[] {"/"};
}
}
** 6.创建控制器**
package demo.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class HomeController {
@RequestMapping(value="/home")
public String home(){
return "Home";
}
}
** 7.在WEB-INF 下创建views文件夹,并创建Home.jsp 文件 最终项目结构如下**
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** 8.将程序部署到Tomcat 访问http://127.0.0.1:8080/Demo/home**
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纯Java配置Spring还是比较简单的,相对于传统的XML配置,我个人还是比较喜欢这种方式.具体如何看个人喜好.今天的教程就到此,有疑问的小伙伴可以给我留言,有不对的地方,希望大神不吝赐教.
