欧美性猛交XXXX免费看蜜桃,成人网18免费韩国,亚洲国产成人精品区综合,欧美日韩一区二区三区高清不卡,亚洲综合一区二区精品久久

1. 項目環(huán)境如下：

myeclipse6.5 、tomcat5.0、system:xp、JDK:開(kāi)發(fā)1.5，編譯1.4

為了方便,在原來(lái)的web項目UpDown中新建了一個(gè)httpcall包，用來(lái)保存http接口和調用的客戶(hù)端。

2.準備需要的jar包
* commons-httpclient-3.0.jar
* commons-logging.jar
* commons-codec-1.3.jar
 
3.class&method
HttpClient：
GetMethod：
PostMethod：
 
start
接口寫(xiě)了一個(gè)servlet來(lái)接收客戶(hù)端get/post的請求
web.xml需要加入以下配置：

    
        TestHTTPServer
        httpcall.TestHTTPServer
   
   
        TestHTTPServer
        /httpServer
   
 
TestHTTPServer.java的代碼如下:
 
  TestHTTPServer
 1 package httpcall;
 2
 3 import java.io.IOException;
 4 import java.io.PrintWriter;
 5 import javax.servlet.ServletException;
 6 import javax.servlet.http.HttpServlet;
 7 import javax.servlet.http.HttpServletRequest;
 8 import javax.servlet.http.HttpServletResponse;
 9
10
17
18 public class TestHTTPServer  extends HttpServlet{
19    
20     private static final long serialVersionUID = 1L;
21
22     public void doGet(HttpServletRequest request, HttpServletResponse response)
23             throws ServletException, IOException {
24         response.setCharacterEncoding("gbk");
25
26         PrintWriter out = response.getWriter();
27         String param1 = request.getParameter("param1");
28         out.println("param1=" + param1);
29         String param2 = request.getParameter("param2");
30         out.println("param2=" + param2);
31         if (param1 == null || "".equals("param1") || param1.length() <= 0) {
32             out.println("http call failed,參數param1不能為空,程序退出");
33         } else if (param2 == null || "".equals("param2")
34                 || param2.length() <= 0) {
35             out.println("http call failed,參數param2不能為空,程序退出");
36         } else {
37             out.println("---http call success---");
38         }
39         out.close();
40     }
41
42     public void doPost(HttpServletRequest request, HttpServletResponse response)
43             throws ServletException, IOException {
44         this.doGet(request, response);
45     }
46 }

 
HttpClientUtil.java的代碼如下：
  HttpClientUtil
  1 package httpcall;
  2
  3 import java.io.IOException;
  4 import org.apache.commons.httpclient.DefaultHttpMethodRetryHandler;
  5 //import org.apache.commons.httpclient.Header;
  6 import org.apache.commons.httpclient.HttpClient;
  7 import org.apache.commons.httpclient.HttpException;
  8 //import org.apache.commons.httpclient.HttpStatus;
  9 import org.apache.commons.httpclient.methods.GetMethod;
 10 import org.apache.commons.httpclient.methods.PostMethod;
 11 import org.apache.commons.httpclient.params.HttpMethodParams;
 12 //import org.apache.commons.httpclient.NameValuePair;
 13 import org.apache.commons.logging.Log;
 14 import org.apache.commons.logging.LogFactory;
 15
 16
 24
 25 public class HttpClientUtil {
 26    
 27     private static final Log log = LogFactory
 28     .getLog(HttpClientUtil.class);
 29
 30    
 36     public static String getHttp(String param1,String param2){
 37         String responseMsg = "";
 38
 39         // 1.構造HttpClient的實(shí)例
 40         HttpClient httpClient = new HttpClient();
 41
 42         // 用于測試的http接口的url
 43         String url="http://localhost:8080/UpDown/httpServer?param1="+param1+"&param2="+param2;
 44
 45         // 2.創(chuàng )建GetMethod的實(shí)例
 46         GetMethod getMethod = new GetMethod(url);
 47
 48         // 使用系統系統的默認的恢復策略
 49         getMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER,
 50                 new DefaultHttpMethodRetryHandler());
 51        
 52         try {
 53             //3.執行g(shù)etMethod,調用http接口
 54             httpClient.executeMethod(getMethod);
 55
 56             //4.讀取內容
 57             byte[] responseBody = getMethod.getResponseBody();
 58            
 59             //5.處理返回的內容
 60             responseMsg = new String(responseBody);
 61             log.info(responseMsg);
 62            
 63         } catch (HttpException e) {
 64             e.printStackTrace();
 65         } catch (IOException e) {
 66             e.printStackTrace();
 67         }finally{
 68             //6.釋放連接
 69             getMethod.releaseConnection();
 70         }
 71         return responseMsg;
 72     }
 73
 74    
 80     public static String postHttp(String param1,String param2) {
 81         String responseMsg = "";
 82        
 83         //1.構造HttpClient的實(shí)例
 84         HttpClient httpClient=new HttpClient();
 85        
 86         httpClient.getParams().setContentCharset("GBK");
 87        
 88         String url="http://localhost:8080/UpDown/httpServer";
 89        
 90         //2.構造PostMethod的實(shí)例
 91         PostMethod postMethod=new PostMethod(url);
 92        
 93         //3.把參數值放入到PostMethod對象中
 94 //方式1：
 95
 98        
 99         //方式2：   
100         postMethod.addParameter("param1", param1);
101         postMethod.addParameter("param2", param2);
102        
103        
104         try {
105             // 4.執行postMethod,調用http接口
106             httpClient.executeMethod(postMethod);//200
107            
108 //5.讀取內容
109             responseMsg = postMethod.getResponseBodyAsString().trim();
110             log.info(responseMsg);
111            
112             //6.處理返回的內容
113
114         } catch (HttpException e) {
115             e.printStackTrace();
116         } catch (IOException e) {
117             e.printStackTrace();
118         } finally {
119             //7.釋放連接
120             postMethod.releaseConnection();
121         }
122         return responseMsg;
123     }
124
125    
129     public static void main(String[] args) {
130    
131         String param1="111";
132         String param2="222";
133         //get
134 //        System.out.println("get方式調用http接口\n"+getHttp(param1, param2));
135        
136 //post
137         System.out.println("post方式調用http接口\n"+postHttp(param1,param2));
138     }
139 }

 
result
在HttpClientUtil運行main方法，分別運行以下幾種情況：
1.get方式
設置
String param1="111";
String param2="222";
運行g(shù)et方式，截圖如下：

設置

String param1="111";
String param2="";

運行g(shù)et方式，截圖如下：

2.post方式

設置

String param1="111";
String param2="222";

運行post方式，截圖如下：

設置

String param1="111";
String param2="";

運行post方式，截圖如下：

通過(guò)get和post方式調用http接口，總結如下:

* get方式調用http接口的步驟：
* 1.構造HttpClient實(shí)例
* 2.構造GetMethod實(shí)例
* 3.執行g(shù)etMethod,調用http接口
* 4.讀取內容
* 5.處理返回的內容
* 6.釋放連接
*
* post方式調用http接口的步驟：
* 1.構造HttpClient實(shí)例
* 2.構造PostMethod實(shí)例
* 3.把參數值放入到PostMethod對象中
*   方式1:利用NameValuePair類(lèi)
*   方式2:直接用PostMethod實(shí)例對象的addParameter方法
* 4.執行postMethod,調用http接口
* 5.讀取內容
* 6.處理返回的內容
* 7.釋放連接