1.创建依赖文件
文件名：pom.xml
文件内容：
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.1.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.huinongtx</groupId>
<artifactId>springboot3</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>springboot3</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
2.创建实体类
包名：com.huinongtx.entity
类名：Greeting
类内容：
public class Greeting {
private Long id;
private String name;
// 省略getter and setter
}
包名：com.huinongtx.entity
类名：Quote
类内容：
public class Quote {
private String type;
private Value value;
// 省略getter and setter
}
包名：com.huinongtx.entity
类名：Value
类内容：
@JsonIgnoreProperties(ignoreUnknown = true)
public class Value {
private Long id;
private String quote;
// 省略getter and setter
}
3.创建控制器
包名：com.huinongtx.controller
类名：GreetingController
类内容：
package com.huinongtx.controller;
import com.huinongtx.entity.Greeting;
import com.huinongtx.entity.Quote;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.client.RestTemplate;
import java.util.concurrent.atomic.AtomicLong;
import static org.springframework.web.bind.annotation.RequestMethod.GET;
/**
* Created by dengdashuai on 2018/12/11.
*/
@RestController
public class GreetingController {
private static final String TEMPLATE = "hello,%s!";
private final AtomicLong counter = new AtomicLong();
private final RestTemplate restTemplate;
@Autowired
public GreetingController(RestTemplate restTemplate) {
this.restTemplate = restTemplate;
}
@RequestMapping(value = "/getgreetobj1", method = GET)
public Greeting getGreetObj1(@RequestParam(value = "name",defaultValue = "world") String name){
return new Greeting(counter.incrementAndGet(),String.format(TEMPLATE,name));
}
@RequestMapping(value = "/getgreetobj2/{name}", method = GET)
public Greeting getGreetObj2(@PathVariable(value = "name") String name) {
return new Greeting(counter.incrementAndGet(), String.format(TEMPLATE, name));
}
@RequestMapping(value = "/client1", method = GET)
public Quote client1() {
RestTemplate innerRestTemplate = new RestTemplate();
return innerRestTemplate.getForObject("http://gturnquist-quoters.cfapps.io/api/random", Quote.class);
}
@RequestMapping(value = "/client2", method = GET)
public Quote client2() {
return restTemplate.getForObject("http://gturnquist-quoters.cfapps.io/api/random", Quote.class);
}
}
4.应用入口文件
包名：com.huinongtx
类名：Springboot3Application
类内容：
package com.huinongtx;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.client.RestTemplateBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate;
@SpringBootApplication
public class Springboot3Application {
public static void main(String[] args) {
SpringApplication.run(Springboot3Application.class, args);
}
@Bean
public RestTemplate restTemplate(RestTemplateBuilder builder){
return builder.build();
}
}
5.启动服务并访问
http://localhost:8080/getgreetobj1
http://localhost:8080/getgreetobj1?name=diaochan
http://localhost:8080/getgreetobj2/lvbu
http://localhost:8080/client1
http://localhost:8080/client2
