SpringBoot-RestTemplate实现调用第三方API

1. RestTemplate的方式来调用别人的API，将数据转化为json 格式，引入了fastjson

[code]<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.28</version>
</dependency>

2. 编写RestTemlateConfig，配置好相关信息

[code]

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.client.ClientHttpRequestFactory;
import org.springframework.http.client.SimpleClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;

@Configuration
public class RestTemplateConfig {
@Bean
public RestTemplate restTemplate(ClientHttpRequestFactory factory){
return new RestTemplate(factory);
}

@Bean
public ClientHttpRequestFactory simpleClientHttpRequestFactory(){
SimpleClientHttpRequestFactory factory = new SimpleClientHttpRequestFactory();
factory.setConnectTimeout(15000);
factory.setReadTimeout(5000);
return factory;
}
}

3.编写controller，调用第三方的API，浏览器模拟get请求，postman模拟post请求

[code]

import com.alibaba.fastjson.JSONObject;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.*;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import java.util.Map;

@RestController
public class SpringRestTemplateController {
@Autowired
private RestTemplate restTemplate;
/***********HTTP GET method*************/
@GetMapping("/testGetApi")
public String getJson(){
String url="http://localhost:8089/o2o/getshopbyid?shopId=19";
//String json =restTemplate.getForObject(url,Object.class);
ResponseEntity<String> results = restTemplate.exchange(url, HttpMethod.GET, null, String.class);
String json = results.getBody();
return json;
}

/**********HTTP POST method**************/
@PostMapping(value = "/testPost")
public Object postJson(@RequestBody JSONObject param) {
System.out.println(param.toJSONString());
param.put("action", "post");
param.put("username", "tester");
param.put("pwd", "123456748");
return param;
}

@PostMapping(value = "/testPostApi")
public Object testPost() {
String url = "http://localhost:8081/girl/testPost";
JSONObject postData = new JSONObject();
postData.put("descp", "request for post");
JSONObject json = restTemplate.postForEntity(url, postData, JSONObject.class).getBody();
return json;
}
}