快速开发Spring Web应用
基于spring boot可以秒建一个基本__web应用 1. 创建maven项目
//创建名为spring-basic-web的maven项目
$ mvn -B archetype:generate -DarchetypeGroupId=org.apache.maven.archetypes -DgroupId=com.zmannotes.spring -DartifactId=spring-basic-web
(详细说明请参考: 快速开发Spring Application) 2. 导入STS/Eclipse/IntelliJ 3. 修改pom.xml内容如下
<!-- 父配置文件,继承通用的配置 -->
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.3.3.RELEASE</version>
</parent>
<dependencies>
<!-- spring web 依赖 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<!-- 打包用插件 -->
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
4. 例子 建立一个web服务,访问Url,返回json串。 4.1 创建json串对应的Java对象
package com.zmannotes.spring.domain;
public class HomeResponse {
/** 响应码 */
private int code;
/** 响应信息 */
private String message;
public HomeResponse(int code, String msg) {
this.code = code;
this.message = msg;
}
public int getCode() {
return code;
}
public String getMessage() {
return message;
}
}
4.2 创建Controller对象
package com.zmannotes.spring.controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import com.zmannotes.spring.domain.HomeResponse;
@RestController //标明此类是一个Controller
@RequestMapping(“/home”) //标明Url根路径为/home
public class HomeController {
@RequestMapping("hi") //标明Url子路径为hi
public HomeResponse hi(
@RequestParam(name = "name", defaultValue = "hacker") String name) {
String msg = String.format("Welcome %s", name);
HomeResponse response = new HomeResponse(0, msg);
return response;
}
}
4.3 修改App.java
package com.zmannotes.spring;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class App {
public static void main(String[] args) {
SpringApplication.run(App.class, args);
}
}
至此开发阶段完成! 5. 打包、运行 5.1 打包 $ mvn clean package
5.2 运行
$ java -jar target/spring-basic-web-1.0-SNAPSHOT.jar
6. 测试 6.1 访问Url:http://localhost:8080/home/hi?name=zman 6.2 返回信息如下:
{
code: 0,
message: “Welcome zman”
}
源码 GitHub Q&A Q:为什么没有用到tomcat这类的容器? A:Spring boot已经在项目依赖中自动内嵌了tomcat,因此不需要外置的tomcat容器了。