编写简单的spring mvc程序，在tomcat上部署
1 用java 配置spring mvc ,可以省去web.xml
package hello;
import org.springframework.web.servlet.support.
AbstractAnnotationConfigDispatcherServletInitializer;
public class SpittrWebAppInitializer
extends AbstractAnnotationConfigDispatcherServletInitializer {
@Override
protected String[] getServletMappings() {
return new String[] { “/” };
}
@Override
protected Class<?>[] getRootConfigClasses() {
return new Class<?>[] { RootConfig.class };
}
@Override
protected Class<?>[] getServletConfigClasses() {
return new Class<?>[] { WebConfig.class };
}
}
2 RootConfig.java
package hello;
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={“spitter”},
excludeFilters={
@Filter(type=FilterType.ANNOTATION, value=EnableWebMvc.class)
})
public class RootConfig {
}
3 WebConfig.java
package hello;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
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(“hello”)
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) {
configurer.enable();
}
*/
}
4 controler
package hello;
import java.util.concurrent.atomic.AtomicLong;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class GreetingController {
private static final String template = “Hello, %s!”;
private final AtomicLong counter = new AtomicLong();
@RequestMapping(“/greeting”)
public Greeting greeting(@RequestParam(value=”name”, defaultValue=”World”) String name) {
return new Greeting(counter.incrementAndGet(),
String.format(template, name));
}
}
package hello;
public class Greeting {
private final long id;
private final String content;
public Greeting(long id, String content) {
this.id = id;
this.content = content;
}
public long getId() {
return id;
}
public String getContent() {
return content;
}
}
5 启动程序
package hello;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
6 gradle
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath(“org.springframework.boot:spring-boot-gradle-plugin:1.5.9.RELEASE”)
}
}
apply plugin: ‘java’
apply plugin: ‘eclipse’
apply plugin: ‘idea’
apply plugin: ‘org.springframework.boot’
apply plugin: ‘war’
jar {
baseName = ‘gs-rest-service’
version = ‘0.1.0’
}
repositories {
mavenCentral()
}
sourceCompatibility = 1.8
targetCompatibility = 1.8
dependencies {
compile(“org.springframework.boot:spring-boot-starter-web”)
testCompile(‘org.springframework.boot:spring-boot-starter-test’)
testCompile(‘com.jayway.jsonpath:json-path’)
}
