java 通过HTTPClient工具类发送请求

妖狐艹你老母 2022-05-09 03:38 360阅读 0赞

客户端code 如下：

package com.eas.bojoy;
    
    import java.io.IOException;
    
    import org.apache.http.HttpEntity;
    import org.apache.http.ParseException;
    import org.apache.http.client.ClientProtocolException;
    import org.apache.http.client.HttpClient;
    import org.apache.http.client.methods.CloseableHttpResponse;
    import org.apache.http.client.methods.HttpGet;
    import org.apache.http.impl.client.CloseableHttpClient;
    import org.apache.http.impl.client.HttpClients;
    import org.apache.http.util.EntityUtils;
    
    public class TestHttpClient {
    	public static void main(String[] args) {
    		// 1.获得一个HttpClient对象
    		CloseableHttpClient httpClient = HttpClients.createDefault();
    		// 2.生成一个HttpGet请求
    		HttpGet httpGet = new HttpGet("http://localhost:8080/testSSM/depts");
    		CloseableHttpResponse response = null;
    		// 3.执行get请求
    
    		try {
    			response = httpClient.execute(httpGet);
    		} catch (IOException e1) {
    			e1.printStackTrace();
    		}
    		String result="";
    		HttpEntity entity = response.getEntity();
    
    			try {
    				if(entity != null)
    				result = EntityUtils.toString(entity);
    			} catch (ParseException | IOException e) {
    				e.printStackTrace();
    			}finally {
    				try {
    					if(response != null)
    					response.close();
    				} catch (IOException e) {
    					e.printStackTrace();
    				}
    			}
    		System.out.println("结果为："+result);	
    		
    	}
    }

服务端code如下：

@RequestMapping(value="/depts")
    	@ResponseBody
    	public Msg getDepts(){
    		List<Department> list = departmentService.getDepts();
    	    return Msg.success().add("depts", list);
    	}

result结果如下：

![70][]

[70]: /images/20220509/655cdd1481cf47fa8febf3844bbe8694.png