Java 访问 http 外部接口

r囧r小猫 2022-01-22 07:29 506阅读 0赞

由于需求需要在后台访问 其他外部接口 所以写了个方法  
首先添加maven依赖

<dependency>
    		    <groupId>org.apache.httpcomponents</groupId>
    		    <artifactId>httpclient</artifactId>
    		    <version>4.5.5</version>
    	   </dependency>

Service

import org.springframework.http.HttpMethod;
    import org.springframework.http.ResponseEntity;
    import org.springframework.stereotype.Service;
    import org.springframework.web.client.RestTemplate;
    
    /** 
    * @author  作者 : 小布
    * @version 创建时间 : 2019年6月5日 下午3:42:49 
    * @explain 类说明 : 
    */
    @Service
    public class HttpService {
    
    	public String httpRequest(String url,HttpMethod method){
    		RestTemplate template = new RestTemplate();
    		ResponseEntity<String> response = template.getForEntity(url, String.class);
    		return response.getBody();
    	}
    	
    }

Controller

import java.util.Map;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.http.HttpMethod;
    import org.springframework.web.bind.annotation.CrossOrigin;
    import org.springframework.web.bind.annotation.PostMapping;
    import org.springframework.web.bind.annotation.RequestBody;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    import io.swagger.annotations.Api;
    import io.swagger.annotations.ApiOperation;
    
    /** 
    * @author  作者 : 小布
    * @version 创建时间 : 2019年6月5日 下午3:42:29 
    * @explain 类说明 : 
    */
    @CrossOrigin(origins = "*", maxAge = 3600)
    @RestController
    @Api(tags = "外部相关接口")
    @RequestMapping("/http")
    public class HttpController {
    
    	@Autowired
    	private HttpService httpService;
    	
    	@PostMapping("/httpRequestTest")
        @ApiOperation(value="测试外部接口")
    	public String httpRequestTest(@RequestBody Map<String, Object> map){
    		return httpService.httpRequest((String)map.get("url"), HttpMethod.GET);
    	} 
    	
    }

测试结果  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjExODI4NA_size_16_color_FFFFFF_t_70]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjExODI4NA_size_16_color_FFFFFF_t_70 1]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjExODI4NA_size_16_color_FFFFFF_t_70]: /images/20220122/a242b2574d024063a38e31a3f63ee086.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjExODI4NA_size_16_color_FFFFFF_t_70 1]: /images/20220122/8989c2ec5c2141cdaad898b087ec2ae2.png